feat: disable sentry integration when no dsn is defined

ref #31

.env.dist

@@ -0,0 +1 @@
+GODEBUG="http1debug=2 http2debug=2"

.gitignore

@@ -10,4 +10,4 @@
 /out
 .dockerconfigjson
 *.prof
-proxy.test
+*.test

.goreleaser.yaml

@@ -63,6 +63,9 @@ nfpms:
       - src: layers
         dst: /etc/bouncer/layers
         type: config
+      - src: templates
+        dst: /etc/bouncer/templates
+        type: config
       - dst: /etc/bouncer/bootstrap.d
         type: dir
         file_info:

Dockerfile

@@ -1,4 +1,4 @@
-FROM reg.cadoles.com/proxy_cache/library/golang:1.22.0 AS BUILD
+FROM reg.cadoles.com/proxy_cache/library/golang:1.22 AS BUILD
 
 RUN apt-get update \
     && apt-get install -y make
@@ -22,6 +22,7 @@ RUN make GORELEASER_ARGS='build --rm-dist --single-target --snapshot' goreleaser
 
 # Patch config
 RUN /src/dist/bouncer_linux_amd64_v1/bouncer -c '' config dump > /src/dist/bouncer_linux_amd64_v1/config.yml \
+&& yq -i '.proxy.templates.dir = "/usr/share/bouncer/templates"' /src/dist/bouncer_linux_amd64_v1/config.yml \
     && yq -i '.layers.queue.templateDir = "/usr/share/bouncer/layers/queue/templates"' /src/dist/bouncer_linux_amd64_v1/config.yml \
     && yq -i '.layers.authn.templateDir = "/usr/share/bouncer/layers/authn/templates"' /src/dist/bouncer_linux_amd64_v1/config.yml \
     && yq -i '.admin.auth.privateKey = "/etc/bouncer/admin-key.json"' /src/dist/bouncer_linux_amd64_v1/config.yml \
@@ -32,7 +33,7 @@ RUN /src/dist/bouncer_linux_amd64_v1/bouncer -c '' config dump > /src/dist/bounc
     && yq -i '.bootstrap.lockTimeout = "30s"' /src/dist/bouncer_linux_amd64_v1/config.yml \
     && yq -i '.integrations.kubernetes.lockTimeout = "30s"' /src/dist/bouncer_linux_amd64_v1/config.yml
 
-FROM reg.cadoles.com/proxy_cache/library/alpine:3.19.1 AS RUNTIME
+FROM reg.cadoles.com/proxy_cache/library/alpine:3.20 AS RUNTIME
 
 RUN apk add --no-cache ca-certificates dumb-init
 
@@ -42,6 +43,7 @@ RUN mkdir -p /usr/local/bin /usr/share/bouncer/bin /etc/bouncer
 
 COPY --from=BUILD /src/dist/bouncer_linux_amd64_v1/bouncer /usr/share/bouncer/bin/bouncer
 COPY --from=BUILD /src/layers /usr/share/bouncer/layers
+COPY --from=BUILD /src/templates /usr/share/bouncer/templates
 COPY --from=BUILD /src/dist/bouncer_linux_amd64_v1/config.yml /etc/bouncer/config.yml
 
 RUN ln -s /usr/share/bouncer/bin/bouncer /usr/local/bin/bouncer

Makefile

@@ -81,7 +81,7 @@ finish-release:
 	git push --tags
 
 docker-build:
-	docker build -t $(DOCKER_IMAGE_NAME):$(DOCKER_IMAGE_TAG) .
+	docker build --pull -t $(DOCKER_IMAGE_NAME):$(DOCKER_IMAGE_TAG) .
 	docker tag $(DOCKER_IMAGE_NAME):$(DOCKER_IMAGE_TAG) $(DOCKER_IMAGE_NAME):latest
 
 docker-release:
@@ -131,7 +131,7 @@ tools/grafterm/bin/grafterm:
 	GOBIN=$(PWD)/tools/grafterm/bin go install github.com/slok/grafterm/cmd/grafterm@v0.2.0
 
 bench:
-	go test -bench=. -run '^$$' -count=10 ./...
+	go test -bench=. -run '^$$' ./internal/bench
 
 tools/benchstat/bin/benchstat:
 	mkdir -p tools/benchstat/bin

README.md

@@ -4,7 +4,16 @@
 
 # Bouncer
 
-Serveur mandataire inverse (_"reverse proxy"_) filtrant avec gestion de files d'attente dynamiques.
+Serveur mandataire inverse (_"reverse proxy"_) avec fonctionnalités avancées pilotable par API REST.
+
+## Fonctionnalités
+
+- Authentification unique basée sur entêtes HTTP ("Trusted headers SSO") avec:
+  - Fournisseur d'identité OpenID Connect ;
+  - Basic Auth ;
+  - Origine réseau ;
+- Gestion de files d'attente dynamiques pour maîtriser la charge sur les services protégés ;
+- Réécriture dynamique des attributs (notamment entêtes HTTP) des requêtes/réponses via un DSL.
 
 ## Documentation
 

doc/README.md

@@ -1,7 +1,8 @@
 # Documentation
 
-- [(FR) - Premiers pas](./fr/getting-started.md)
 - [(FR) - Architecture générale](./fr/general-architecture.md)
+- [(FR) - Terminologie](./fr/terminology.md)
+- [(FR) - Premiers pas](./fr/getting-started.md)
 
 ## Exemples
 
@@ -11,19 +12,22 @@
 
 - [(FR) - Layers](./fr/references/layers/README.md)
 - [(FR) - Métriques](./fr/references/metrics.md)
-- [(FR) - Fichier de configuration](../misc/packaging/common/config.yml)
+- [(FR) - Configuration](./fr/references/configuration.md)
 - [(FR) - API d'administration](./fr/references/admin_api.md)
 
 ## Tutoriels
 
 ### Utilisation
 
+- [(FR) - Le cas du "virtual hosting"](./fr/tutorials/virtual-hosting.md)
 - [(FR) - Ajouter un layer de type "file d'attente"](./fr/tutorials/add-queue-layer.md)
 - [(FR) - Ajouter une authentification OpenID Connect](./fr/tutorials/add-oidc-authn-layer.md)
 - [(FR) - Amorçage d'un serveur Bouncer via la configuration](./fr/tutorials/bootstrapping.md)
 - [(FR) - Intégration avec Kubernetes](./fr/tutorials/kubernetes-integration.md)
+- [(FR) - Profilage](./fr/tutorials/profiling.md)
 
 ### Développement
 
 - [(FR) - Démarrer avec les sources](./fr/tutorials/getting-started-with-sources.md)
 - [(FR) - Créer son propre layer](./fr/tutorials/create-custom-layer.md)
+- [(FR) - Étudier les performances de Bouncer](./fr/tutorials/profiling.md)

doc/fr/general-architecture.md

@@ -2,31 +2,6 @@
 
 ## Modèles de déploiement
 
-### Déploiement mono-noeud
+### Mode mono-noeud
 
-![](../resources/deployment_fr.png)
+![](../resources/deployment_single_node_fr.png)
-
-## Terminologie
-
-Voici une liste des termes utilisés dans le lexique Bouncer.
-
-### Proxy
-
-Un "proxy" est une entité logique définissant le relation suivante:
-
-- Un ou plusieurs patrons de filtrage sous la forme d'un patron d'URL avec le caractère `*` comme caractère générique. Ceux ci identifient le ou les domaines/chemins associés à l'entité;
-- Une URL cible qui servira de base pour la réécriture des requêtes.
-
-Un "proxy" peut avoir zéro ou plusieurs "layers" associés.
-
-Un "proxy" peut être activé ou désactivé.
-
-Un "proxy" a un poids qui définit son niveau de priorité dans la pile de traitement (plus son poids est élevé plus il est prioritaire).
-
-### Layer
-
-Un "layer" (calque) est une entité logique définissant un traitement à appliquer aux requêtes et/ou aux réponses transitant par un proxy.
-
-Un "layer" peut être activé ou désactivé.
-
-Un "layer" a un poids qui définit son niveau de priorité dans la pile de traitement (plus son poids est élevé plus il est prioritaire).

doc/fr/references/configuration.md

@@ -0,0 +1,34 @@
+# Configuration
+
+## Référence
+
+Vous trouverez ici un fichier de configuration de référence, complet et commenté:
+
+[`misc/packaging/common/config.yml`](../../../misc/packaging/common/config.yml)
+
+## Interpolation de variables
+
+Il est possible d'utiliser de l'interpolation de variables d'environnement dans le fichier de configuration via la syntaxe `${var}`.
+
+Les fonctions d'interpolation suivantes sont également disponibles:
+
+- `${var^}`
+- `${var^^}`
+- `${var,}`
+- `${var,,}`
+- `${var:position}`
+- `${var:position:length}`
+- `${var#substring}`
+- `${var##substring}`
+- `${var%substring}`
+- `${var%%substring}`
+- `${var/substring/replacement}`
+- `${var//substring/replacement}`
+- `${var/#substring/replacement}`
+- `${var/%substring/replacement}`
+- `${#var}`
+- `${var=default}`
+- `${var:=default}`
+- `${var:-default}`
+
+_Voir le package [`github.com/drone/envsubst`](https://pkg.go.dev/github.com/drone/envsubst) pour plus de détails._

doc/fr/references/layers/README.md

@@ -4,3 +4,4 @@ Vous trouverez ci-dessous la liste des entités "Layer" activables sur vos entit
 
 - [Authn (`authn-*`)](./authn/README.md) - Authentification des accès (SSO)
 - [Queue](./queue.md) - File d'attente dynamique
+- [Rewriter](./rewriter.md) - Réécriture dynamiques des attributs des requêtes/réponses

doc/fr/references/layers/authn/README.md

@@ -36,16 +36,28 @@ Le comportement des règles par défaut est le suivant:
 
 Interdire l'accès à l'utilisateur.
 
-#### `set_header(name string, value string)`
+##### `add_header(name string, value string)`
 
-Définir la valeur d'une entête HTTP via son nom `name` et sa valeur `value`.
+Ajouter une valeur à un entête HTTP via son nom `name` et sa valeur `value`.
 
-#### `del_headers(pattern string)`
+##### `set_header(name string, value string)`
+
+Définir la valeur d'un entête HTTP via son nom `name` et sa valeur `value`. La valeur précédente est écrasée.
+
+##### `del_headers(pattern string)`
 
 Supprimer un ou plusieurs entêtes HTTP dont le nom correspond au patron `pattern`.
 
 Le patron est défini par une chaîne comprenant un ou plusieurs caractères `*`, signifiant un ou plusieurs caractères arbitraires.
 
+##### `set_host(host string)`
+
+Modifier la valeur de l'entête `Host` de la requête.
+
+##### `set_url(url string)`
+
+Modifier l'URL du serveur cible.
+
 ### Environnement
 
 Les règles ont accès aux variables suivantes pendant leur exécution.

doc/fr/references/layers/rewriter.md

@@ -0,0 +1,130 @@
+# Layer "Rewriter"
+
+## Description
+
+Ce layer permet de modifier dynamiquement certains attributs de requêtes/réponses transitant par le proxy.
+
+## Type
+
+`rewriter`
+
+## Schéma des options
+
+Les options disponibles pour le layer sont décrites via un [schéma JSON](https://json-schema.org/specification). Elles sont documentées dans le [schéma visible ici](../../../../internal/proxy/director/layer/rewriter/layer-options.json).
+
+## Moteur de règles
+
+Les options `rules.request` et `rules.response` permettent de définir des listes de règles utilisant un DSL modifiant de manière dynamique les attributs des requêtes/réponses transitant par le proxy.
+
+Les listes d'instructions sont exécutées séquentiellement.
+
+Bouncer utilise le projet [`expr`](https://expr-lang.org/) comme DSL. En plus des fonctionnalités natives du langage, Bouncer ajoute un certain nombre de fonctions spécifiques au contexte d'utilisation.
+
+### Fonctions
+
+#### Communes
+
+##### `add_header(name string, value string)`
+
+Ajouter une valeur à un entête HTTP via son nom `name` et sa valeur `value`.
+
+##### `set_header(name string, value string)`
+
+Définir la valeur d'un entête HTTP via son nom `name` et sa valeur `value`. La valeur précédente est écrasée.
+
+##### `del_headers(pattern string)`
+
+Supprimer un ou plusieurs entêtes HTTP dont le nom correspond au patron `pattern`.
+
+Le patron est défini par une chaîne comprenant un ou plusieurs caractères `*`, signifiant un ou plusieurs caractères arbitraires.
+
+#### Requête
+
+##### `set_host(host string)`
+
+Modifier la valeur de l'entête `Host` de la requête.
+
+##### `set_url(url string)`
+
+Modifier l'URL du serveur cible.
+
+#### Réponse
+
+_Pas de fonctions spécifiques._
+
+### Environnement
+
+Les règles ont accès aux variables suivantes pendant leur exécution. **Ces données sont en lecture seule.**
+
+#### Requête
+
+##### `request`
+
+La requête en cours de traitement.
+
+```js
+{
+    method: "string", // Méthode HTTP
+    host: "string", // Nom d'hôte (`Host`) associé à la requête
+    url: { // URL associée à la requête sous sa forme structurée
+        "scheme": "string", // Schéma HTTP de l'URL
+        "opaque": "string", // Données opaque de l'URL
+        "user": { // Identifiants d'URL (Basic Auth)
+            "username": "",
+            "password": ""
+        },
+        "host": "string", // Nom d'hôte (<domaine>:<port>) de l'URL
+        "path": "string", // Chemin de l'URL (format assaini)
+        "rawPath": "string", // Chemin de l'URL (format brut)
+        "rawQuery": "string", // Variables d'URL (format brut)
+        "fragment" : "string", // Fragment d'URL (format assaini)
+        "rawFragment" : "string" // Fragment d'URL (format brut)
+    },
+    rawUrl: "string", // URL associée à la requête (format assaini)
+    proto: "string", // Numéro de version du protocole utilisé
+    protoMajor: "int", // Numéro de version majeure du protocole utilisé
+    protoMinor: "int",  // Numéro de version mineur du protocole utilisé
+    header: { // Table associative des entêtes HTTP associés à la requête
+        "string": ["string"]
+    },
+    contentLength: "int", // Taille du corps de la requête
+    transferEncoding: ["string"], // MIME-Type(s) d'encodage du corps de la requête
+    trailer: { // Table associative des entêtes HTTP associés à la requête, transmises après le corps de la requête
+        "string": ["string"]
+    },
+    remoteAddr: "string", // Adresse du client HTTP à l'origine de la requête
+    requestUri: "string" // URL "brute" associée à la requêtes (avant opérations d'assainissement, utiliser "url" plutôt)
+}
+```
+
+#### Réponse
+
+##### `response`
+
+La réponse en cours de traitement.
+
+```js
+{
+    statusCode: "int", // Code de statut de la réponse
+    status: "string", // Message associé au code de statut
+    proto: "string", // Numéro de version du protocole utilisé
+    protoMajor: "int", // Numéro de version majeure du protocole utilisé
+    protoMinor: "int",  // Numéro de version mineur du protocole utilisé
+    header: { // Table associative des entêtes HTTP associés à la requête
+        "string": ["string"]
+    },
+    contentLength: "int", // Taille du corps de la réponse
+    transferEncoding: ["string"], // MIME-Type(s) d'encodage du corps de la requête
+    trailer: { // Table associative des entêtes HTTP associés à la requête, transmises après le corps de la requête
+        "string": ["string"]
+    },
+}
+```
+
+##### `request`
+
+_Voir section précédente._
+
+## Métriques
+
+_Pas de métriques spécifiques._

doc/fr/terminology.md

@@ -0,0 +1,29 @@
+# Terminologie
+
+Voici une liste des termes utilisés dans le lexique Bouncer.
+
+## Proxy
+
+Un proxy est une entité logique définie par les propriétés suivantes:
+
+- Il possède **un ou plusieurs filtres d'origine** sous la forme de motifs d'URL avec le caractère `*` comme joker. Ces filtres identifient le ou les URLs associées au proxy.
+- Il peut avoir **zéro ou une URL cible**, qui servira de base pour la réécriture des requêtes. Si l'URL est absente, on parle alors de "passthrough" (voir note).
+- Il peut avoir **zéro ou plusieurs "layers" associés**.
+- Il peut être **activé ou désactivé**.
+- Il a **un poids qui définit son niveau de priorité** dans la pile de traitement (plus son poids est élevé plus il est prioritaire).
+
+Pour résumer un proxy répond à la question "_Quelle URL orienter vers quel serveur cible ?_".
+
+> **Passthrough**
+>
+> Un proxy "passthrough" est un proxy n'ayant pas d'URL cible (champ vide). Dans ce cas si les motifs d'URLs correspondent à l'URL de la requête Bouncer appliquera les layers associés puis passera la main aux proxies suivants.
+
+## Layer
+
+Un layer est une entité logique définie par les propriétés suivantes:
+
+- Il a **un type auquel est associé un schéma d'options** permettant de configurer son comportement.
+- Il peut être **activé ou désactivé**.
+- Il a **un poids qui définit son niveau de priorité** dans la pile de traitement (plus son poids est élevé plus il est prioritaire).
+
+Pour résumer un layer répond à la question "_Quel traitement appliquer à la requête et/ou réponse ?_".

doc/fr/tutorials/create-custom-layer.md

@@ -10,13 +10,13 @@ Avoir un environnement de développement local fonctionnel. Voir tutoriel ["Dém
 
 ### Préparer la structure de base du nouveau layer
 
-Une implémetation d'un layer se compose majoritairement de 3 éléments:
+Une implémentation d'un layer se compose majoritairement de 3 éléments:
 
 - Une structure qui implémente une ou plusieurs interfaces (`director.MiddlewareLayer`, `director.RequestTransformerLayer` et/ou `director.ResponseTransformerLayer`);
 - Un schéma au format [JSON Schema](http://json-schema.org/) qui permettra de valider les "options" de notre layer;
 - Un fichier d'amorçage qui permettra à Bouncer de référencer notre nouveau layer.
 
-1. Créer le répertoire du `package` Go qui contiendra le code de votre layer. Celui ci s'appelera `basicauth`:
+1. Créer le répertoire du `package` Go qui contiendra le code de votre layer. Celui ci s’appellera `basicauth`:
 
    ```
    mkdir -p internal/proxy/director/layer/basicauth
@@ -133,26 +133,22 @@ Une implémetation d'un layer se compose majoritairement de 3 éléments:
 
 ## Tester l'intégration de notre nouveau layer
 
-À ce stade, notre nouveau layer est normalement référencé et donc "utilisable" dans Bouncer (si on omet le fait qu'il déclenchera une `panic()`).
+À ce stade, notre nouveau layer est normalement référencé et donc "utilisable" dans Bouncer (si on omet le fait qu'il déclenchera un `panic()`).
 
 1. Vérifier que notre layer est bien référencé en exécutant la commande:
 
    ```
-   ./bin/bouncer admin layer create --help
+   ./bin/bouncer admin definition layer query --with-type basicauth
    ```
 
    La sortie devrait ressembler à:
 
    ```
-   NAME:
+    +-----------+-----------------------------------+
-   bouncer admin layer create - Create layer
+    | TYPE      | OPTIONS                           |
-
+    +-----------+-----------------------------------+
-   USAGE:
+    | basicauth | {"type":"object","properties":... |
-   bouncer admin layer create [command options] [arguments...]
+    +-----------+-----------------------------------+
-
-   OPTIONS:
-   --layer-type LAYER_TYPE        Set LAYER_TYPE as layer's type (available: [basicauth queue])
-   [...]
    ```
 
    Comme vous devriez le voir nous pouvons désormais créer des layers de type `basicauth`.

doc/fr/tutorials/profiling.md

@@ -1,31 +1,68 @@
-# Analyser les performances de Bouncer
+# Étudier les performances de Bouncer
 
-1. Lancer un benchmark du proxy
+## In situ
 
-   ```shell
+Il est possible d'activer via la configuration de Bouncer de endpoints capable de générer des fichiers de profil au format [`pprof`](https://github.com/google/pprof). Par défaut, le point d'entrée est `.bouncer/profiling` (l'activation et la personnalisation de ce point d'entrée sont modifiables via la [configuration](../../../misc/packaging/common/config.yml)).
-   go test -bench=. -run '^$' -count=5 -cpuprofile bench_proxy.prof ./internal/proxy
-   ```
 
-2. Visualiser les temps d'exécution
+**Exemple:** Visualiser l'utilisation mémoire de Bouncer
 
-   ```shell
+```bash
-   go tool pprof -web bench_proxy.prof
+go tool pprof -web http://<bouncer_proxy>/.bouncer/profiling/heap
-   ```
+```
 
-3. Comparer les performances d'une exécution à l'autre
+L'ensemble des profils disponibles sont visibles à l'adresse `http://<bouncer_proxy>/.bouncer/profiling`.
 
-   ```shell
+## En développement
-   # Lancer un premier benchmark
-   go test -bench=. -run '^$' -count=10 ./internal/proxy > bench_before.txt
 
-   # Faire des modifications sur les sources
+Le package `./internal` est dédié à l'étude des performances de Bouncer. Il contient une suite de benchmarks simulant de proxies avec différentes configurations de layers afin d'évaluer les points d'engorgement sur le traitement des requêtes.
 
-   # Lancer un second benchmark
+Voir le répertoire `./internal/bench/testdata/proxies` pour voir les différentes configurations de cas.
-   go test -bench=. -run '^$' -count=10 ./internal/proxy > bench_after.txt
 
-   # Installer l'outil benchstat
+### Lancer les benchmarks
-   make tools/benchstat/bin/benchstat
 
-   # Comparer les rapports
+Le plus simple est d'utiliser la commande `make bench` qui exécutera séquentiellement tous les benchmarks. Il est également possible de lancer un benchmark spécifique via la commande suivante:
-   tools/benchstat/bin/benchstat bench_before.txt bench_after.txt
+
-   ```
+```bash
+go test -bench="BenchmarkProxies/$BENCH_CASE" -run='^$'  ./internal/bench
+```
+
+Par exemple:
+
+```bash
+# Pour exécuter ./internal/bench/testdata/proxies/basic-auth.yml
+go test -bench='BenchmarkProxies/basic-auth' -run='^$'  ./internal/bench
+```
+
+### Visualiser les profils d'exécution
+
+Vous pouvez visualiser les profils d'exécution via la commande suivante:
+
+```shell
+go tool pprof -web path/to/file.prof
+```
+
+Par défaut l'exécution des benchmarks créera automatiquement des fichiers de profil dans le répertoire `./internal/bench/testdata/proxies`.
+
+Par exemple:
+
+```shell
+go tool pprof -web ./internal/bench/testdata/proxies/basic-auth.prof
+```
+
+### Comparer les évolutions
+
+```bash
+# Lancer un premier benchmark
+go test -bench="BenchmarkProxies/$BENCH_CASE" -run='^$'  ./internal/bench
+
+# Faire une sauvegarde du fichier de profil
+cp ./internal/bench/testdata/proxies/$BENCH_CASE.prof ./internal/bench/testdata/proxies/$BENCH_CASE-prev.prof
+
+# Faire des modifications sur les sources
+
+# Lancer un second benchmark
+go test -bench="BenchmarkProxies/$BENCH_CASE" -run='^$'  ./internal/bench
+
+# Visualiser la différence entre les deux profils
+go tool pprof -web -base=./internal/bench/testdata/proxies/$BENCH_CASE-prev.prof ./internal/bench/testdata/proxies/$BENCH_CASE.prof
+```

doc/fr/tutorials/virtual-hosting.md

@@ -0,0 +1,129 @@
+# Le cas du "virtual hosting"
+
+De nombreux serveurs HTTP utilisent le mécanisme du ["virtual hosting"](https://en.wikipedia.org/wiki/Virtual_hosting) afin d'héberger plusieurs sites/applications différentes sur un même serveur, se basant alors sur l'entête HTTP `Host` pour effectuer le routage.
+
+## Exemple
+
+Pour exemple, avec le site [example.net](https://example.net) il est facile de tester ce type de comportement. Ainsi, en exécutant une requête HTTP avec `curl`:
+
+```shell
+curl -I https://example.net
+```
+
+On obtient le résultat suivant:
+
+```
+HTTP/2 200
+accept-ranges: bytes
+age: 568237
+cache-control: max-age=604800
+content-type: text/html; charset=UTF-8
+date: Thu, 27 Jun 2024 08:32:46 GMT
+etag: "3147526947"
+expires: Thu, 04 Jul 2024 08:32:46 GMT
+last-modified: Thu, 17 Oct 2019 07:18:26 GMT
+server: ECAcc (bsb/2789)
+x-cache: HIT
+content-length: 1256
+```
+
+Ce résultat indique que le serveur a correctement orienté notre requête (code HTTP `200`) et qu'il nous a renvoyé la réponse attendue.
+
+Si maintenant on modifie l'entête `Host` de notre requête pour la remplacer par une valeur arbitraire:
+
+```shell
+curl -I -H 'Host: localhost:8080' https://example.net
+```
+
+On obtient alors le résultat:
+
+```
+HTTP/2 404
+content-type: text/html
+date: Thu, 27 Jun 2024 08:38:04 GMT
+server: ECAcc (bsb/2789)
+content-length: 345
+```
+
+Le serveur nous répond avec un code HTTP `404`, indiquant qu'il n'a pas trouvé la page demandée.
+
+> **Note**
+> Le code HTTP retourné par le serveur peut varier en fonction des implémentations. Parfois la requête sera orientée vers la page par défaut, parfois vous recevrez un code d'erreur HTTP comme `404`, `421`, etc.
+
+## Avec Bouncer
+
+Ce mécanisme peut parfois poser problème avec Bouncer car par défaut celui ci n'effectue pas de réécriture de l'entête `Host`. Pour exemple:
+
+1.  Créez puis activez un nouveau proxy pointant vers https://example.net
+
+    ```shell
+    bouncer admin proxy create --proxy-name example --proxy-to https://example.net
+    bouncer admin proxy update --proxy-name example --proxy-enabled=true
+    ```
+
+2.  Avec `curl`, faites une requête sur votre nouveau proxy:
+
+    ```shell
+     curl -I http://localhost:8080
+    ```
+
+    La réponse devrait ressembler à:
+
+    ```
+    HTTP/1.1 404 Not Found
+    Content-Length: 345
+    Content-Type: text/html
+    Date: Thu, 27 Jun 2024 08:49:05 GMT
+    Server: ECAcc (bsb/2789)
+    ```
+
+    On retrouve bien notre code HTTP `404` tel que vu plus haut. En effet, vu que l'on accède au proxy Bouncer avec `http://localhost:8080` alors le serveur distant recevra l'entête `Host: localhost:8080`.
+
+### Comment corriger la situation ?
+
+Le layer [`rewriter`](../references/layers/rewriter.md) a été implémenté notamment pour répondre à ce type de cas. Voyons comment l'utiliser:
+
+1. Créez puis activez un nouveau layer pour votre proxy `example`:
+
+   ```bash
+    # Création du layer
+    bouncer admin layer create --proxy-name example --layer-name host-rewrite --layer-type rewriter
+
+    # Mise à jour et activation du layer
+    bouncer admin layer update \
+        --proxy-name example \
+        --layer-name host-rewrite \
+        --layer-options '{ "rules": { "request": ["set_host(\"example.net\")"] } }' \
+        --layer-enabled=true
+   ```
+
+   > **Les règles**
+   >
+   > Le layer `rewriter` permet la modification des requêtes/réponses via un moteur de règles.
+   >
+   > [Voir la page du layer pour plus d'informations](../references/layers/rewriter.md) sur la syntaxe ainsi que sur l'API à disposition des règles.
+
+2. Testez maintenant à nouveau un appel vers votre proxy:
+
+   ```shell
+    curl -I http://localhost:8080
+   ```
+
+   La réponse devrait ressembler à:
+
+   ```
+    HTTP/1.1 200 OK
+    Accept-Ranges: bytes
+    Age: 569980
+    Cache-Control: max-age=604800
+    Content-Length: 1256
+    Content-Type: text/html; charset=UTF-8
+    Date: Thu, 27 Jun 2024 09:01:49 GMT
+    Etag: "3147526947"
+    Expires: Thu, 04 Jul 2024 09:01:49 GMT
+    Last-Modified: Thu, 17 Oct 2019 07:18:26 GMT
+    Server: ECAcc (bsb/2789)
+    X-Cache: HIT
+   ```
+
+   Cette fois ci, le serveur distant a bien identifié la cible de notre requête.

go.mod

@@ -1,11 +1,11 @@
 module forge.cadoles.com/cadoles/bouncer
 
-go 1.21
+go 1.22
 
 toolchain go1.22.0
 
 require (
-	forge.cadoles.com/Cadoles/go-proxy v0.0.0-20230701194111-c6b3d482cca6
+	forge.cadoles.com/Cadoles/go-proxy v0.0.0-20240626132607-e1db6466a926
 	github.com/Masterminds/sprig/v3 v3.2.3
 	github.com/bsm/redislock v0.9.4
 	github.com/btcsuite/btcd/btcutil v1.1.3
@@ -92,9 +92,9 @@ require (
 	github.com/xeipuuv/gojsonschema v1.2.0 // indirect
 	go.opentelemetry.io/otel v1.21.0 // indirect
 	go.opentelemetry.io/otel/trace v1.21.0 // indirect
-	golang.org/x/net v0.19.0 // indirect
+	golang.org/x/net v0.26.0 // indirect
 	golang.org/x/sync v0.7.0 // indirect
-	golang.org/x/text v0.14.0 // indirect
+	golang.org/x/text v0.16.0 // indirect
 	golang.org/x/time v0.3.0 // indirect
 	google.golang.org/appengine v1.6.8 // indirect
 	google.golang.org/protobuf v1.33.0 // indirect
@@ -111,18 +111,18 @@ require (
 require (
 	cdr.dev/slog v1.6.1 // indirect
 	github.com/cpuguy83/go-md2man/v2 v2.0.2 // indirect
-	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.2.0 // indirect
+	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.3.0 // indirect
 	github.com/go-chi/cors v1.2.1
 	github.com/go-playground/locales v0.14.0 // indirect
 	github.com/go-playground/universal-translator v0.18.0 // indirect
-	github.com/goccy/go-json v0.10.2 // indirect
+	github.com/goccy/go-json v0.10.3 // indirect
 	github.com/google/uuid v1.3.0
 	github.com/leodido/go-urn v1.2.1 // indirect
 	github.com/lestrrat-go/blackmagic v1.0.2 // indirect
 	github.com/lestrrat-go/httpcc v1.0.1 // indirect
-	github.com/lestrrat-go/httprc v1.0.4 // indirect
+	github.com/lestrrat-go/httprc v1.0.5 // indirect
 	github.com/lestrrat-go/iter v1.0.2 // indirect
-	github.com/lestrrat-go/jwx/v2 v2.0.19
+	github.com/lestrrat-go/jwx/v2 v2.1.0
 	github.com/lestrrat-go/option v1.0.1 // indirect
 	github.com/lib/pq v1.10.0 // indirect
 	github.com/lithammer/shortuuid/v4 v4.0.0
@@ -132,11 +132,11 @@ require (
 	github.com/urfave/cli/v2 v2.25.3
 	github.com/xrash/smetrics v0.0.0-20201216005158-039620a65673 // indirect
 	gitlab.com/wpetit/goweb v0.0.0-20240226160244-6b2826c79f88
-	golang.org/x/crypto v0.19.0
+	golang.org/x/crypto v0.24.0
-	golang.org/x/mod v0.14.0 // indirect
+	golang.org/x/mod v0.17.0 // indirect
-	golang.org/x/sys v0.17.0 // indirect
+	golang.org/x/sys v0.21.0 // indirect
-	golang.org/x/term v0.17.0 // indirect
+	golang.org/x/term v0.21.0 // indirect
-	golang.org/x/tools v0.16.1 // indirect
+	golang.org/x/tools v0.21.1-0.20240508182429-e35e4ccd0d2d // indirect
 	golang.org/x/xerrors v0.0.0-20231012003039-104605ab7028 // indirect
 	gopkg.in/go-playground/validator.v9 v9.29.1 // indirect
 	gopkg.in/yaml.v3 v3.0.1

go.sum

@@ -8,8 +8,8 @@ cloud.google.com/go/logging v1.7.0 h1:CJYxlNNNNAMkHp9em/YEXcfJg+rPDg7YfwoRpMU+t5
 cloud.google.com/go/logging v1.7.0/go.mod h1:3xjP2CjkM3ZkO73aj4ASA5wRPGGCRrPIAeNqVNkzY8M=
 cloud.google.com/go/longrunning v0.5.1 h1:Fr7TXftcqTudoyRJa113hyaqlGdiBQkp0Gq7tErFDWI=
 cloud.google.com/go/longrunning v0.5.1/go.mod h1:spvimkwdz6SPWKEt/XBij79E9fiTkHSQl/fRUUQJYJc=
-forge.cadoles.com/Cadoles/go-proxy v0.0.0-20230701194111-c6b3d482cca6 h1:FTk0ZoaV5N8Tkps5Da5RrDMZZXSHZIuD67Hy1Y4fsos=
+forge.cadoles.com/Cadoles/go-proxy v0.0.0-20240626132607-e1db6466a926 h1:gSTTuW2lqH66cGVrhplrVrqos62BY1/GxR3KYh2TElk=
-forge.cadoles.com/Cadoles/go-proxy v0.0.0-20230701194111-c6b3d482cca6/go.mod h1:o8ZK5v/3J1dRmklFVn1l6WHAyQ3LgegyHjRIT8KLAFw=
+forge.cadoles.com/Cadoles/go-proxy v0.0.0-20240626132607-e1db6466a926/go.mod h1:o8ZK5v/3J1dRmklFVn1l6WHAyQ3LgegyHjRIT8KLAFw=
 github.com/Azure/go-ansiterm v0.0.0-20210617225240-d185dfc1b5a1 h1:UQHMgLO+TxOElx5B5HZ4hJQsoJ/PvUvKRhJHDQXO8P8=
 github.com/Azure/go-ansiterm v0.0.0-20210617225240-d185dfc1b5a1/go.mod h1:xomTg63KZ2rFqZQzSB4Vz2SUXa1BpHTVz9L5PTmPC4E=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
@@ -83,8 +83,8 @@ github.com/dchest/uniuri v1.2.0 h1:koIcOUdrTIivZgSLhHQvKgqdWZq5d7KdMEWF1Ud6+5g=
 github.com/dchest/uniuri v1.2.0/go.mod h1:fSzm4SLHzNZvWLvWJew423PhAzkpNQYq+uNLq4kxhkY=
 github.com/decred/dcrd/crypto/blake256 v1.0.0/go.mod h1:sQl2p6Y26YV+ZOcSTP6thNdn47hh8kt6rqSlvmrXFAc=
 github.com/decred/dcrd/dcrec/secp256k1/v4 v4.0.1/go.mod h1:hyedUtir6IdtD/7lIxGeCxkaw7y45JueMRL4DIyJDKs=
-github.com/decred/dcrd/dcrec/secp256k1/v4 v4.2.0 h1:8UrgZ3GkP4i/CLijOJx79Yu+etlyjdBU4sfcs2WYQMs=
+github.com/decred/dcrd/dcrec/secp256k1/v4 v4.3.0 h1:rpfIENRNNilwHwZeG5+P150SMrnNEcHYvcCuK6dPZSg=
-github.com/decred/dcrd/dcrec/secp256k1/v4 v4.2.0/go.mod h1:v57UDF4pDQJcEfFUCRop3lJL149eHGSe9Jvczhzjo/0=
+github.com/decred/dcrd/dcrec/secp256k1/v4 v4.3.0/go.mod h1:v57UDF4pDQJcEfFUCRop3lJL149eHGSe9Jvczhzjo/0=
 github.com/decred/dcrd/lru v1.0.0/go.mod h1:mxKOwFd7lFjN2GZYsiz/ecgqR6kkYAl+0pz0tEMk218=
 github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f h1:lO4WD4F/rVNCu3HqELle0jiPLLBs70cWOduZpkS1E78=
 github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f/go.mod h1:cuUVRXasLTGF7a8hSLbxyZXjz+1KgoB3wDUb6vlszIc=
@@ -133,8 +133,8 @@ github.com/go-sql-driver/mysql v1.6.0 h1:BCTh4TKNUYmOmMUcQ3IipzF5prigylS7XXjEkfC
 github.com/go-sql-driver/mysql v1.6.0/go.mod h1:DCzpHaOWr8IXmIStZouvnhqoel9Qv2LBy8hT2VhHyBg=
 github.com/go-task/slim-sprig v0.0.0-20230315185526-52ccab3ef572 h1:tfuBGBXKqDEevZMzYi5KSi8KkcZtzBcTgAUUtapy0OI=
 github.com/go-task/slim-sprig v0.0.0-20230315185526-52ccab3ef572/go.mod h1:9Pwr4B2jHnOSGXyyzV8ROjYa2ojvAY6HCGYYfMoC3Ls=
-github.com/goccy/go-json v0.10.2 h1:CrxCmQqYDkv1z7lO7Wbh2HN93uovUHgrECaO5ZrCXAU=
+github.com/goccy/go-json v0.10.3 h1:KZ5WoDbxAIgm2HNbYckL0se1fHD6rz5j4ywS6ebzDqA=
-github.com/goccy/go-json v0.10.2/go.mod h1:6MelG93GURQebXPDq3khkgXZkazVtN9CRI+MGFi0w8I=
+github.com/goccy/go-json v0.10.3/go.mod h1:oq7eo15ShAhp70Anwd5lgX2pLfOS3QCiwU/PULtXL6M=
 github.com/godbus/dbus/v5 v5.0.4/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5xrFpKfA=
 github.com/godbus/dbus/v5 v5.0.6/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5xrFpKfA=
 github.com/gogo/protobuf v1.3.2 h1:Ov1cvc58UF3b5XjBnZv7+opcTcQFZebYjWzi34vdm4Q=
@@ -208,12 +208,12 @@ github.com/lestrrat-go/blackmagic v1.0.2 h1:Cg2gVSc9h7sz9NOByczrbUvLopQmXrfFx//N
 github.com/lestrrat-go/blackmagic v1.0.2/go.mod h1:UrEqBzIR2U6CnzVyUtfM6oZNMt/7O7Vohk2J0OGSAtU=
 github.com/lestrrat-go/httpcc v1.0.1 h1:ydWCStUeJLkpYyjLDHihupbn2tYmZ7m22BGkcvZZrIE=
 github.com/lestrrat-go/httpcc v1.0.1/go.mod h1:qiltp3Mt56+55GPVCbTdM9MlqhvzyuL6W/NMDA8vA5E=
-github.com/lestrrat-go/httprc v1.0.4 h1:bAZymwoZQb+Oq8MEbyipag7iSq6YIga8Wj6GOiJGdI8=
+github.com/lestrrat-go/httprc v1.0.5 h1:bsTfiH8xaKOJPrg1R+E3iE/AWZr/x0Phj9PBTG/OLUk=
-github.com/lestrrat-go/httprc v1.0.4/go.mod h1:mwwz3JMTPBjHUkkDv/IGJ39aALInZLrhBp0X7KGUZlo=
+github.com/lestrrat-go/httprc v1.0.5/go.mod h1:mwwz3JMTPBjHUkkDv/IGJ39aALInZLrhBp0X7KGUZlo=
 github.com/lestrrat-go/iter v1.0.2 h1:gMXo1q4c2pHmC3dn8LzRhJfP1ceCbgSiT9lUydIzltI=
 github.com/lestrrat-go/iter v1.0.2/go.mod h1:Momfcq3AnRlRjI5b5O8/G5/BvpzrhoFTZcn06fEOPt4=
-github.com/lestrrat-go/jwx/v2 v2.0.19 h1:ekv1qEZE6BVct89QA+pRF6+4pCpfVrOnEJnTnT4RXoY=
+github.com/lestrrat-go/jwx/v2 v2.1.0 h1:0zs7Ya6+39qoit7gwAf+cYm1zzgS3fceIdo7RmQ5lkw=
-github.com/lestrrat-go/jwx/v2 v2.0.19/go.mod h1:l3im3coce1lL2cDeAjqmaR+Awx+X8Ih+2k8BuHNJ4CU=
+github.com/lestrrat-go/jwx/v2 v2.1.0/go.mod h1:Xpw9QIaUGiIUD1Wx0NcY1sIHwFf8lDuZn/cmxtXYRys=
 github.com/lestrrat-go/option v1.0.1 h1:oAzP2fvZGQKWkvHa1/SAcFolBEca1oN+mQ7eooNBEYU=
 github.com/lestrrat-go/option v1.0.1/go.mod h1:5ZHFbivi4xwXxhxY9XHDe2FHo6/Z7WWmtT7T5nBBp3I=
 github.com/lib/pq v1.10.0 h1:Zx5DJFEYQXio93kgXnQ09fXNiUKsqv4OUEu2UtGcB1E=
@@ -339,8 +339,8 @@ github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/
 github.com/stretchr/testify v1.7.4/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
 github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
 github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
-github.com/stretchr/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcUk=
+github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg=
-github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
+github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
 github.com/syndtr/gocapability v0.0.0-20200815063812-42c35b437635/go.mod h1:hkRG7XYTFWNJGYcbNJQlaLq0fg1yr4J4t/NcTQtrfww=
 github.com/syndtr/goleveldb v1.0.1-0.20210819022825-2ae1ddf74ef7/go.mod h1:q4W45IWZaF22tdD+VEXcAWRA037jwmWEB5VWYORlTpc=
 github.com/urfave/cli v1.22.1/go.mod h1:Gos4lmkARVdJ6EkW0WaNv/tZAAMe9V7XWyB60NtXRu0=
@@ -375,13 +375,13 @@ golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8U
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
 golang.org/x/crypto v0.3.0/go.mod h1:hebNnKkNXi2UzZN1eVRvBB7co0a+JxK6XbPiWVs/3J4=
-golang.org/x/crypto v0.19.0 h1:ENy+Az/9Y1vSrlrvBSyna3PITt4tiZLf7sgCjZBX7Wo=
+golang.org/x/crypto v0.24.0 h1:mnl8DM0o513X8fdIkmyFE/5hTYxbwYOjDS/+rK6qpRI=
-golang.org/x/crypto v0.19.0/go.mod h1:Iy9bg/ha4yyC70EfRS8jz+B6ybOBKMaSxLj6P6oBDfU=
+golang.org/x/crypto v0.24.0/go.mod h1:Z1PMYSOR5nyMcyAVAIQSKCDwalqy85Aqn1x3Ws4L5DM=
 golang.org/x/mod v0.2.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
-golang.org/x/mod v0.14.0 h1:dGoOF9QVLYng8IHTm7BAyWqCqSheQ5pYWGhzW00YJr0=
+golang.org/x/mod v0.17.0 h1:zY54UmvipHiNd+pm+m0x9KhZ9hl1/7QNMyxXbc6ICqA=
-golang.org/x/mod v0.14.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
+golang.org/x/mod v0.17.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
 golang.org/x/net v0.0.0-20180719180050-a680a1efc54d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
@@ -395,8 +395,8 @@ golang.org/x/net v0.0.0-20201224014010-6772e930b67b/go.mod h1:m0MpNAwzfU5UDzcl9v
 golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
 golang.org/x/net v0.2.0/go.mod h1:KqCZLdyyvdV855qA2rE3GC2aiw5xGR5TEjj8smXukLY=
-golang.org/x/net v0.19.0 h1:zTwKpTd2XuCqf8huc7Fo2iSy+4RHPd10s4KzeTnVr1c=
+golang.org/x/net v0.26.0 h1:soB7SVo0PWrY4vPW/+ay0jKDNScG2X9wFeYlXIvJsOQ=
-golang.org/x/net v0.19.0/go.mod h1:CfAk/cbD4CthTvqiEl8NpboMuiuOYsAr/7NOjZJtv1U=
+golang.org/x/net v0.26.0/go.mod h1:5YKkiSynbBIh3p6iOc/vibscux0x38BZDkn8sCUPxHE=
 golang.org/x/oauth2 v0.13.0 h1:jDDenyj+WgFtmV3zYVoi8aE2BwtXFLWOA67ZfNWftiY=
 golang.org/x/oauth2 v0.13.0/go.mod h1:/JMhi4ZRXAf4HG9LiNmxvk+45+96RUlVThiH8FzNBn0=
 golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
@@ -433,13 +433,13 @@ golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBc
 golang.org/x/sys v0.1.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.2.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.17.0 h1:25cE3gD+tdBA7lp7QfhuV+rJiE9YXTcS3VG1SqssI/Y=
+golang.org/x/sys v0.21.0 h1:rF+pYz3DAGSQAxAu1CbC7catZg4ebC4UIeIhKxBZvws=
-golang.org/x/sys v0.17.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.21.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
 golang.org/x/term v0.2.0/go.mod h1:TVmDHMZPmdnySmBfhjOoOdhjzdE1h4u1VwSiw2l1Nuc=
-golang.org/x/term v0.17.0 h1:mkTF7LCd6WGJNL3K1Ad7kwxNfYAW6a8a8QqtMblp/4U=
+golang.org/x/term v0.21.0 h1:WVXCp+/EBEHOj53Rvu+7KiT/iElMrO8ACK16SMZ3jaA=
-golang.org/x/term v0.17.0/go.mod h1:lLRBjIVuehSbZlaOtGMbcMncT+aqLLLmKrsjNrUguwk=
+golang.org/x/term v0.21.0/go.mod h1:ooXLefLobQVslOqselCNF4SxFAaoS6KujMbsGzSDmX0=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
@@ -447,8 +447,8 @@ golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
 golang.org/x/text v0.3.8/go.mod h1:E6s5w1FMmriuDzIBO73fBruAKo1PCIq6d2Q6DHfQ8WQ=
 golang.org/x/text v0.4.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
-golang.org/x/text v0.14.0 h1:ScX5w1eTa3QqT8oi6+ziP7dTV1S2+ALU0bI+0zXKWiQ=
+golang.org/x/text v0.16.0 h1:a94ExnEXNtEwYLGJSIUxnWoxoRz/ZcCsV63ROupILh4=
-golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
+golang.org/x/text v0.16.0/go.mod h1:GhwF1Be+LQoKShO3cGOHzqOgRrGaYc9AvblQOmPVHnI=
 golang.org/x/time v0.3.0 h1:rg5rLMjNzMS1RkNLzCG38eapWhnYLFYXDXj2gOlr8j4=
 golang.org/x/time v0.3.0/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
@@ -457,8 +457,8 @@ golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtn
 golang.org/x/tools v0.0.0-20200619180055-7c47624df98f/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
 golang.org/x/tools v0.0.0-20210106214847-113979e3529a/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
 golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
-golang.org/x/tools v0.16.1 h1:TLyB3WofjdOEepBHAU20JdNC1Zbg87elYofWYAY5oZA=
+golang.org/x/tools v0.21.1-0.20240508182429-e35e4ccd0d2d h1:vU5i/LfpvrRCpgM/VPfJLg5KjxD3E+hfT1SH+d9zLwg=
-golang.org/x/tools v0.16.1/go.mod h1:kYVVN6I1mBNoB1OX+noeBjbRk4IUEPa7JJ+TJMEooJ0=
+golang.org/x/tools v0.21.1-0.20240508182429-e35e4ccd0d2d/go.mod h1:aiJjzUbINMkxbQROHiO6hDPo2LHcIPhhQsa9DLh0yGk=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=

internal/admin/proxy_route.go

@@ -121,7 +121,7 @@ func (s *Server) deleteProxy(w http.ResponseWriter, r *http.Request) {
 
 type CreateProxyRequest struct {
 	Name string   `json:"name" validate:"required"`
-	To   string   `json:"to" validate:"required"`
+	To   string   `json:"to"`
 	From []string `json:"from" validate:"required"`
 }
 

internal/admin/server.go

@@ -6,6 +6,7 @@ import (
 	"log"
 	"net"
 	"net/http"
+	"net/http/pprof"
 
 	"forge.cadoles.com/cadoles/bouncer/internal/auth"
 	"forge.cadoles.com/cadoles/bouncer/internal/auth/jwt"
@@ -155,6 +156,34 @@ func (s *Server) run(parentCtx context.Context, addrs chan net.Addr, errs chan e
 		})
 	}
 
+	if s.serverConfig.Profiling.Enabled {
+		profiling := s.serverConfig.Profiling
+		logger.Info(ctx, "enabling profiling", logger.F("endpoint", profiling.Endpoint))
+
+		router.Group(func(r chi.Router) {
+			if profiling.BasicAuth != nil {
+				logger.Info(ctx, "enabling authentication on metrics endpoint")
+
+				r.Use(middleware.BasicAuth(
+					"profiling",
+					profiling.BasicAuth.CredentialsMap(),
+				))
+			}
+
+			r.Route(string(profiling.Endpoint), func(r chi.Router) {
+				r.HandleFunc("/", pprof.Index)
+				r.HandleFunc("/cmdline", pprof.Cmdline)
+				r.HandleFunc("/profile", pprof.Profile)
+				r.HandleFunc("/symbol", pprof.Symbol)
+				r.HandleFunc("/trace", pprof.Trace)
+				r.HandleFunc("/{name}", func(w http.ResponseWriter, r *http.Request) {
+					name := chi.URLParam(r, "name")
+					pprof.Handler(name).ServeHTTP(w, r)
+				})
+			})
+		})
+	}
+
 	router.Route("/api/v1", func(r chi.Router) {
 		r.Group(func(r chi.Router) {
 			r.Use(auth.Middleware(

internal/bench/proxy_test.go

@@ -0,0 +1,300 @@
+package proxy_test
+
+import (
+	"context"
+	"io"
+	"log"
+	"net/http"
+	"net/http/httptest"
+	"net/http/httputil"
+	"net/url"
+	"os"
+	"path/filepath"
+	"runtime/pprof"
+	"strings"
+	"testing"
+	"time"
+
+	"forge.cadoles.com/Cadoles/go-proxy"
+	"forge.cadoles.com/cadoles/bouncer/internal/cache/memory"
+	"forge.cadoles.com/cadoles/bouncer/internal/cache/ttl"
+	"forge.cadoles.com/cadoles/bouncer/internal/config"
+	"forge.cadoles.com/cadoles/bouncer/internal/proxy/director"
+	"forge.cadoles.com/cadoles/bouncer/internal/store"
+	redisStore "forge.cadoles.com/cadoles/bouncer/internal/store/redis"
+	"github.com/pkg/errors"
+	"github.com/redis/go-redis/v9"
+	"gopkg.in/yaml.v3"
+
+	"forge.cadoles.com/cadoles/bouncer/internal/setup"
+)
+
+func BenchmarkProxies(b *testing.B) {
+	proxyFiles, err := filepath.Glob("testdata/proxies/*.yml")
+	if err != nil {
+		b.Fatalf("%+v", errors.WithStack(err))
+	}
+
+	for _, f := range proxyFiles {
+		name := strings.TrimSuffix(filepath.Base(f), filepath.Ext(f))
+
+		b.Run(name, func(b *testing.B) {
+			conf, err := loadProxyBenchConfig(f)
+			if err != nil {
+				b.Fatalf("%+v", errors.Wrapf(err, "could notre load bench config"))
+			}
+
+			proxy, backend, err := createProxy(name, conf, b.Logf)
+			if err != nil {
+				b.Fatalf("%+v", errors.Wrapf(err, "could not create proxy"))
+			}
+
+			defer proxy.Close()
+
+			if backend != nil {
+				defer backend.Close()
+			}
+
+			client := proxy.Client()
+
+			proxyURL, err := url.Parse(proxy.URL)
+			if err != nil {
+				b.Fatalf("%+v", errors.Wrapf(err, "could not parse proxy url"))
+			}
+
+			if conf.Fetch.URL.Path != "" {
+				proxyURL.Path = conf.Fetch.URL.Path
+			}
+
+			if conf.Fetch.URL.RawQuery != "" {
+				proxyURL.RawQuery = conf.Fetch.URL.RawQuery
+			}
+
+			if conf.Fetch.URL.User.Username != "" || conf.Fetch.URL.User.Password != "" {
+				proxyURL.User = url.UserPassword(conf.Fetch.URL.User.Username, conf.Fetch.URL.User.Password)
+			}
+
+			rawProxyURL := proxyURL.String()
+
+			b.Logf("fetching url '%s'", rawProxyURL)
+
+			profile, err := os.Create(filepath.Join("testdata", "proxies", name+".prof"))
+			if err != nil {
+				b.Fatalf("%+v", errors.Wrapf(err, "could not create cpu profile"))
+			}
+
+			defer profile.Close()
+
+			if err := pprof.StartCPUProfile(profile); err != nil {
+				log.Fatal(err)
+			}
+
+			defer pprof.StopCPUProfile()
+
+			b.ResetTimer()
+
+			for i := 0; i < b.N; i++ {
+				res, err := client.Get(rawProxyURL)
+				if err != nil {
+					b.Errorf("could not fetch proxy url: %+v", errors.WithStack(err))
+				}
+
+				body, err := io.ReadAll(res.Body)
+				if err != nil {
+					b.Errorf("could not read response body: %+v", errors.WithStack(err))
+				}
+
+				b.Logf("%s \n %v", res.Status, string(body))
+
+				if err := res.Body.Close(); err != nil {
+					b.Errorf("could not close response body: %+v", errors.WithStack(err))
+				}
+			}
+		})
+	}
+}
+
+type proxyBenchConfig struct {
+	Proxy config.BootstrapProxyConfig `yaml:"proxy"`
+	Fetch fetchBenchConfig            `yaml:"fetch"`
+}
+
+type fetchBenchConfig struct {
+	URL fetchURLBenchConfig `yaml:"url"`
+}
+
+type fetchURLBenchConfig struct {
+	Path     string                  `yaml:"path"`
+	RawQuery string                  `yaml:"rawQuery"`
+	User     fetchURLUserBenchConfig `yaml:"user"`
+}
+
+type fetchURLUserBenchConfig struct {
+	Username string `yaml:"username"`
+	Password string `yaml:"password"`
+}
+
+func loadProxyBenchConfig(filename string) (*proxyBenchConfig, error) {
+	data, err := os.ReadFile(filename)
+	if err != nil {
+		return nil, errors.Wrapf(err, "could not read file '%s'", filename)
+	}
+
+	conf := proxyBenchConfig{}
+
+	if err := yaml.Unmarshal(data, &conf); err != nil {
+		return nil, errors.Wrapf(err, "could not unmarshal config")
+	}
+
+	return &conf, nil
+}
+
+func createProxy(name string, conf *proxyBenchConfig, logf func(format string, a ...any)) (*httptest.Server, *httptest.Server, error) {
+	redisEndpoint := os.Getenv("BOUNCER_BENCH_REDIS_ADDR")
+	if redisEndpoint == "" {
+		redisEndpoint = "127.0.0.1:6379"
+	}
+
+	client := redis.NewUniversalClient(&redis.UniversalOptions{
+		Addrs: []string{redisEndpoint},
+	})
+
+	proxyRepository := redisStore.NewProxyRepository(client, redisStore.DefaultTxMaxAttempts, redisStore.DefaultTxBaseDelay)
+	layerRepository := redisStore.NewLayerRepository(client, redisStore.DefaultTxMaxAttempts, redisStore.DefaultTxBaseDelay)
+
+	var backend *httptest.Server
+
+	if conf.Proxy.To == "" {
+		backend = httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			w.WriteHeader(http.StatusOK)
+			if _, err := w.Write([]byte("Hello, world.")); err != nil {
+				logf("[ERROR] %+v", errors.WithStack(err))
+			}
+		}))
+
+		if err := waitFor(backend.URL, 5*time.Second); err != nil {
+			return nil, nil, errors.WithStack(err)
+		}
+
+		logf("started backend '%s'", backend.URL)
+	}
+
+	ctx := context.Background()
+
+	proxyName := store.ProxyName("bench-" + name)
+
+	proxies, err := proxyRepository.QueryProxy(ctx)
+	if err != nil {
+		return nil, nil, errors.WithStack(err)
+	}
+
+	// Cleanup existing proxies
+	for _, p := range proxies {
+		if err := proxyRepository.DeleteProxy(ctx, p.Name); err != nil {
+			return nil, nil, errors.WithStack(err)
+		}
+	}
+
+	logf("creating proxy '%s'", proxyName)
+
+	to := string(conf.Proxy.To)
+	if to == "" {
+		to = backend.URL
+	}
+
+	if _, err := proxyRepository.CreateProxy(ctx, proxyName, to, conf.Proxy.From...); err != nil {
+		return nil, nil, errors.WithStack(err)
+	}
+
+	if _, err := proxyRepository.UpdateProxy(ctx, proxyName, store.WithProxyUpdateEnabled(true)); err != nil {
+		return nil, nil, errors.WithStack(err)
+	}
+
+	for layerName, layerConf := range conf.Proxy.Layers {
+		if err := layerRepository.DeleteLayer(ctx, proxyName, store.LayerName(layerName)); err != nil {
+			return nil, nil, errors.WithStack(err)
+		}
+
+		_, err := layerRepository.CreateLayer(ctx, proxyName, store.LayerName(layerName), store.LayerType(layerConf.Type), layerConf.Options.Data)
+		if err != nil {
+			return nil, nil, errors.WithStack(err)
+		}
+
+		_, err = layerRepository.UpdateLayer(ctx, proxyName, store.LayerName(layerName), store.WithLayerUpdateEnabled(bool(layerConf.Enabled)))
+		if err != nil {
+			return nil, nil, errors.WithStack(err)
+		}
+
+	}
+
+	layers, err := setup.GetLayers(context.Background(), config.NewDefault())
+	if err != nil {
+		return nil, nil, errors.WithStack(err)
+	}
+
+	director := director.New(
+		proxyRepository, layerRepository,
+		director.WithLayerCache(
+			ttl.NewCache(
+				memory.NewCache[string, []*store.Layer](),
+				memory.NewCache[string, time.Time](),
+				30*time.Second,
+			),
+		),
+		director.WithProxyCache(
+			ttl.NewCache(
+				memory.NewCache[string, []*store.Proxy](),
+				memory.NewCache[string, time.Time](),
+				30*time.Second,
+			),
+		),
+		director.WithLayers(layers...),
+	)
+
+	directorMiddleware := director.Middleware()
+
+	handler := proxy.New(
+		proxy.WithRequestTransformers(
+			director.RequestTransformer(),
+		),
+		proxy.WithResponseTransformers(
+			director.ResponseTransformer(),
+		),
+		proxy.WithReverseProxyFactory(func(ctx context.Context, target *url.URL) *httputil.ReverseProxy {
+			reverse := httputil.NewSingleHostReverseProxy(target)
+			reverse.ErrorHandler = func(w http.ResponseWriter, r *http.Request, err error) {
+				logf("[ERROR] %s", errors.WithStack(err))
+			}
+			return reverse
+		}),
+	)
+
+	server := httptest.NewServer(directorMiddleware(handler))
+
+	return server, backend, nil
+}
+
+func waitFor(url string, ttl time.Duration) error {
+	var lastErr error
+	timeout := time.After(ttl)
+	for {
+		select {
+		case <-timeout:
+			if lastErr != nil {
+				return lastErr
+			}
+
+			return errors.New("wait timed out")
+		default:
+			res, err := http.Get(url)
+			if err != nil {
+				lastErr = errors.WithStack(err)
+				continue
+			}
+
+			if res.StatusCode >= 200 && res.StatusCode < 400 {
+				return nil
+			}
+		}
+	}
+}

internal/bench/testdata/proxies/basic-auth.yml

@@ -0,0 +1,20 @@
+proxy:
+  from: ["*"]
+  to: ""
+  layers:
+    basic-auth:
+      type: authn-basic
+      enabled: true
+      options:
+        users:
+          - username: foo
+            passwordHash: "$2y$10$ShTc856wMB8PCxyr46qJRO8z06MpV4UejAVRDJ/bixhu0XTGn7Giy"
+            attributes:
+              email: foo@bar.com
+        rules:
+          - set_header("Remote-User-Attr-Email", user.attrs.email)
+fetch:
+  url:
+    user:
+      username: foo
+      password: bar

internal/bench/testdata/proxies/noop.yml

@@ -0,0 +1,3 @@
+proxy:
+  from: ["*"]
+  to: ""

internal/bench/testdata/proxies/rewriter.yml

@@ -0,0 +1,12 @@
+proxy:
+  from: ["*"]
+  to: ""
+  layers:
+    host-rewriter:
+      type: rewriter
+      enabled: true
+      options:
+        rules:
+          request:
+            - set_host(request.url.host)
+            - set_header("X-Proxied-With", "bouncer")

internal/command/admin/layer/query.go

@@ -2,6 +2,7 @@ package layer
 
 import (
 	"os"
+	"slices"
 
 	"forge.cadoles.com/cadoles/bouncer/internal/client"
 	"forge.cadoles.com/cadoles/bouncer/internal/command/admin/apierr"
@@ -52,14 +53,16 @@ func QueryCommand() *cli.Command {
 
 			client := client.New(baseFlags.ServerURL, client.WithToken(token))
 
-			proxies, err := client.QueryLayer(ctx.Context, proxyName, options...)
+			layers, err := client.QueryLayer(ctx.Context, proxyName, options...)
 			if err != nil {
 				return errors.WithStack(apierr.Wrap(err))
 			}
 
+			slices.SortFunc(layers, sortLayerssByWeight)
+
 			hints := layerHeaderHints(baseFlags.OutputMode)
 
-			if err := format.Write(baseFlags.Format, os.Stdout, hints, clientFlag.AsAnySlice(proxies)...); err != nil {
+			if err := format.Write(baseFlags.Format, os.Stdout, hints, clientFlag.AsAnySlice(layers)...); err != nil {
 				return errors.WithStack(err)
 			}
 
@@ -67,3 +70,13 @@ func QueryCommand() *cli.Command {
 		},
 	}
 }
+
+func sortLayerssByWeight(a *store.LayerHeader, b *store.LayerHeader) int {
+	if a.Weight < b.Weight {
+		return 1
+	}
+	if a.Weight > b.Weight {
+		return -1
+	}
+	return 0
+}

internal/command/admin/layer/util.go

@@ -13,6 +13,7 @@ func layerHeaderHints(outputMode format.OutputMode) format.Hints {
 			format.NewProp("Type", "Type"),
 			format.NewProp("Enabled", "Enabled"),
 			format.NewProp("Weight", "Weight"),
+			format.NewProp("Revision", "Revision"),
 		},
 	}
 }
@@ -25,6 +26,7 @@ func layerHints(outputMode format.OutputMode) format.Hints {
 			format.NewProp("Type", "Type"),
 			format.NewProp("Enabled", "Enabled"),
 			format.NewProp("Weight", "Weight"),
+			format.NewProp("Revision", "Revision"),
 			format.NewProp("Options", "Options"),
 			format.NewProp("CreatedAt", "CreatedAt", table.WithCompactModeMaxColumnWidth(20)),
 			format.NewProp("UpdatedAt", "UpdatedAt", table.WithCompactModeMaxColumnWidth(20)),

internal/command/admin/proxy/create.go

@@ -19,7 +19,7 @@ func CreateCommand() *cli.Command {
 		Name:  "create",
 		Usage: "Create proxy",
 		Flags: proxyFlag.WithProxyFlags(
-			flag.ProxyTo(true),
+			flag.ProxyTo(),
 			flag.ProxyFrom(),
 		),
 		Action: func(ctx *cli.Context) error {

internal/command/admin/proxy/flag/flag.go

@@ -30,12 +30,11 @@ func ProxyName() cli.Flag {
 
 const KeyProxyTo = "proxy-to"
 
-func ProxyTo(required bool) cli.Flag {
+func ProxyTo() cli.Flag {
 	return &cli.StringFlag{
-		Name:     KeyProxyTo,
+		Name:  KeyProxyTo,
-		Usage:    "Set `PROXY_TO` as proxy's destination url",
+		Usage: "Set `PROXY_TO` as proxy's destination url",
-		Value:    "",
+		Value: "",
-		Required: required,
 	}
 }
 

internal/command/admin/proxy/query.go

@@ -2,6 +2,7 @@ package proxy
 
 import (
 	"os"
+	"slices"
 
 	"forge.cadoles.com/cadoles/bouncer/internal/client"
 	"forge.cadoles.com/cadoles/bouncer/internal/command/admin/apierr"
@@ -51,6 +52,8 @@ func QueryCommand() *cli.Command {
 				return errors.WithStack(apierr.Wrap(err))
 			}
 
+			slices.SortFunc(proxies, sortProxiesByWeight)
+
 			hints := proxyHeaderHints(baseFlags.OutputMode)
 
 			if err := format.Write(baseFlags.Format, os.Stdout, hints, clientFlag.AsAnySlice(proxies)...); err != nil {
@@ -61,3 +64,13 @@ func QueryCommand() *cli.Command {
 		},
 	}
 }
+
+func sortProxiesByWeight(a *store.ProxyHeader, b *store.ProxyHeader) int {
+	if a.Weight < b.Weight {
+		return 1
+	}
+	if a.Weight > b.Weight {
+		return -1
+	}
+	return 0
+}

internal/command/admin/proxy/update.go

@@ -19,7 +19,7 @@ func UpdateCommand() *cli.Command {
 		Name:  "update",
 		Usage: "Update proxy",
 		Flags: proxyFlag.WithProxyFlags(
-			flag.ProxyTo(false),
+			flag.ProxyTo(),
 			flag.ProxyFrom(),
 			flag.ProxyEnabled(),
 			flag.ProxyWeight(),

internal/command/admin/proxy/util.go

@@ -12,6 +12,7 @@ func proxyHeaderHints(outputMode format.OutputMode) format.Hints {
 			format.NewProp("Name", "Name"),
 			format.NewProp("Enabled", "Enabled"),
 			format.NewProp("Weight", "Weight"),
+			format.NewProp("Revision", "Revision"),
 		},
 	}
 }
@@ -25,6 +26,7 @@ func proxyHints(outputMode format.OutputMode) format.Hints {
 			format.NewProp("To", "To"),
 			format.NewProp("Enabled", "Enabled"),
 			format.NewProp("Weight", "Weight"),
+			format.NewProp("Revision", "Revision"),
 			format.NewProp("CreatedAt", "CreatedAt", table.WithCompactModeMaxColumnWidth(20)),
 			format.NewProp("UpdatedAt", "UpdatedAt", table.WithCompactModeMaxColumnWidth(20)),
 		},

internal/command/server/admin/run.go

@@ -35,12 +35,15 @@ func RunCommand() *cli.Command {
 			logger.SetLevel(logger.Level(conf.Logger.Level))
 
 			projectVersion := ctx.String("projectVersion")
-			flushSentry, err := setup.SetupSentry(ctx.Context, conf.Admin.Sentry, projectVersion)
-			if err != nil {
-				return errors.Wrap(err, "could not initialize sentry client")
-			}
 
-			defer flushSentry()
+			if conf.Proxy.Sentry.DSN != "" {
+				flushSentry, err := setup.SetupSentry(ctx.Context, conf.Proxy.Sentry, projectVersion)
+				if err != nil {
+					return errors.Wrap(err, "could not initialize sentry client")
+				}
+
+				defer flushSentry()
+			}
 
 			integrations, err := setup.SetupIntegrations(ctx.Context, conf)
 			if err != nil {

internal/command/server/proxy/run.go

@@ -30,12 +30,15 @@ func RunCommand() *cli.Command {
 			logger.SetLevel(logger.Level(conf.Logger.Level))
 
 			projectVersion := ctx.String("projectVersion")
-			flushSentry, err := setup.SetupSentry(ctx.Context, conf.Proxy.Sentry, projectVersion)
-			if err != nil {
-				return errors.Wrap(err, "could not initialize sentry client")
-			}
 
-			defer flushSentry()
+			if conf.Proxy.Sentry.DSN != "" {
+				flushSentry, err := setup.SetupSentry(ctx.Context, conf.Proxy.Sentry, projectVersion)
+				if err != nil {
+					return errors.Wrap(err, "could not initialize sentry client")
+				}
+
+				defer flushSentry()
+			}
 
 			layers, err := setup.GetLayers(ctx.Context, conf)
 			if err != nil {

internal/config/admin_server.go

@@ -1,20 +1,22 @@
 package config
 
 type AdminServerConfig struct {
-	HTTP    HTTPConfig    `yaml:"http"`
+	HTTP      HTTPConfig      `yaml:"http"`
-	CORS    CORSConfig    `yaml:"cors"`
+	CORS      CORSConfig      `yaml:"cors"`
-	Auth    AuthConfig    `yaml:"auth"`
+	Auth      AuthConfig      `yaml:"auth"`
-	Metrics MetricsConfig `yaml:"metrics"`
+	Metrics   MetricsConfig   `yaml:"metrics"`
-	Sentry  SentryConfig  `yaml:"sentry"`
+	Profiling ProfilingConfig `yaml:"profiling"`
+	Sentry    SentryConfig    `yaml:"sentry"`
 }
 
 func NewDefaultAdminServerConfig() AdminServerConfig {
 	return AdminServerConfig{
-		HTTP:    NewHTTPConfig("127.0.0.1", 8081),
+		HTTP:      NewHTTPConfig("127.0.0.1", 8081),
-		CORS:    NewDefaultCORSConfig(),
+		CORS:      NewDefaultCORSConfig(),
-		Auth:    NewDefaultAuthConfig(),
+		Auth:      NewDefaultAuthConfig(),
-		Metrics: NewDefaultMetricsConfig(),
+		Metrics:   NewDefaultMetricsConfig(),
-		Sentry:  NewDefaultSentryConfig(),
+		Sentry:    NewDefaultSentryConfig(),
+		Profiling: NewDefaultProfilingConfig(),
 	}
 }
 

internal/config/bootstrap.go

@@ -80,24 +80,33 @@ func loadBootstrapDir(dir string) (map[store.ProxyName]BootstrapProxyConfig, err
 
 	proxies := make(map[store.ProxyName]BootstrapProxyConfig)
 	for _, f := range files {
-		data, err := os.ReadFile(f)
+		proxy, err := loadBootstrappedProxyConfig(f)
 		if err != nil {
-			return nil, errors.Wrapf(err, "could not read file '%s'", f)
+			return nil, errors.Wrapf(err, "could not load proxy bootstrap file '%s'", f)
-		}
-
-		proxy := BootstrapProxyConfig{}
-
-		if err := yaml.Unmarshal(data, &proxy); err != nil {
-			return nil, errors.Wrapf(err, "could not unmarshal proxy")
 		}
 
 		name := store.ProxyName(strings.TrimSuffix(filepath.Base(f), filepath.Ext(f)))
-		proxies[name] = proxy
+		proxies[name] = *proxy
 	}
 
 	return proxies, nil
 }
 
+func loadBootstrappedProxyConfig(filename string) (*BootstrapProxyConfig, error) {
+	data, err := os.ReadFile(filename)
+	if err != nil {
+		return nil, errors.Wrapf(err, "could not read file '%s'", filename)
+	}
+
+	proxy := BootstrapProxyConfig{}
+
+	if err := yaml.Unmarshal(data, &proxy); err != nil {
+		return nil, errors.Wrapf(err, "could not unmarshal proxy")
+	}
+
+	return &proxy, nil
+}
+
 func overrideProxies(base map[store.ProxyName]BootstrapProxyConfig, proxies map[store.ProxyName]BootstrapProxyConfig) map[store.ProxyName]BootstrapProxyConfig {
 	for name, proxy := range proxies {
 		base[name] = proxy

internal/config/environment.go

@@ -2,7 +2,6 @@ package config
 
 import (
 	"os"
-	"regexp"
 	"strconv"
 	"time"
 
@@ -11,9 +10,6 @@ import (
 	"gopkg.in/yaml.v3"
 )
 
-// var reVar = regexp.MustCompile(`^\${(\w+)}$`)
-var reVar = regexp.MustCompile(`\${(.*?)}`)
-
 type InterpolatedString string
 
 func (is *InterpolatedString) UnmarshalYAML(value *yaml.Node) error {
@@ -23,12 +19,13 @@ func (is *InterpolatedString) UnmarshalYAML(value *yaml.Node) error {
 		return errors.WithStack(err)
 	}
 
-	if match := reVar.FindStringSubmatch(str); len(match) > 0 {
+	str, err := envsubst.EvalEnv(str)
-		*is = InterpolatedString(os.Getenv(match[1]))
+	if err != nil {
-	} else {
+		return errors.WithStack(err)
-		*is = InterpolatedString(str)
 	}
 
+	*is = InterpolatedString(str)
+
 	return nil
 }
 
@@ -41,8 +38,9 @@ func (ii *InterpolatedInt) UnmarshalYAML(value *yaml.Node) error {
 		return errors.Wrapf(err, "could not decode value '%v' (line '%d') into string", value.Value, value.Line)
 	}
 
-	if match := reVar.FindStringSubmatch(str); len(match) > 0 {
+	str, err := envsubst.EvalEnv(str)
-		str = os.Getenv(match[1])
+	if err != nil {
+		return errors.WithStack(err)
 	}
 
 	intVal, err := strconv.ParseInt(str, 10, 32)
@@ -64,11 +62,12 @@ func (ifl *InterpolatedFloat) UnmarshalYAML(value *yaml.Node) error {
 		return errors.Wrapf(err, "could not decode value '%v' (line '%d') into string", value.Value, value.Line)
 	}
 
-	if match := reVar.FindStringSubmatch(str); len(match) > 0 {
+	str, err := envsubst.EvalEnv(str)
-		str = os.Getenv(match[1])
+	if err != nil {
+		return errors.WithStack(err)
 	}
 
-	floatVal, err := strconv.ParseFloat(str, 10)
+	floatVal, err := strconv.ParseFloat(str, 32)
 	if err != nil {
 		return errors.Wrapf(err, "could not parse float '%v',  line '%d'", str, value.Line)
 	}
@@ -87,8 +86,9 @@ func (ib *InterpolatedBool) UnmarshalYAML(value *yaml.Node) error {
 		return errors.Wrapf(err, "could not decode value '%v' (line '%d') into string", value.Value, value.Line)
 	}
 
-	if match := reVar.FindStringSubmatch(str); len(match) > 0 {
+	str, err := envsubst.EvalEnv(str)
-		str = os.Getenv(match[1])
+	if err != nil {
+		return errors.WithStack(err)
 	}
 
 	boolVal, err := strconv.ParseBool(str)
@@ -127,7 +127,7 @@ func (im *InterpolatedMap) UnmarshalYAML(value *yaml.Node) error {
 	return nil
 }
 
-func (im *InterpolatedMap) interpolateRecursive(data any) (any, error) {
+func (im InterpolatedMap) interpolateRecursive(data any) (any, error) {
 	switch typ := data.(type) {
 	case map[string]any:
 		for key, value := range typ {
@@ -165,22 +165,15 @@ type InterpolatedStringSlice []string
 
 func (iss *InterpolatedStringSlice) UnmarshalYAML(value *yaml.Node) error {
 	var data []string
-	var evErr error
 
 	if err := value.Decode(&data); err != nil {
 		return errors.Wrapf(err, "could not decode value '%v' (line '%d') into map", value.Value, value.Line)
 	}
 
 	for index, value := range data {
-		//match := reVar.FindStringSubmatch(value)
+		value, err := envsubst.EvalEnv(value)
-		re := regexp.MustCompile(`\${(.*?)}`)
+		if err != nil {
-
+			return errors.WithStack(err)
-		res := re.FindAllStringSubmatch(value, 10)
-		if len(res) > 0 {
-			value, evErr = envsubst.EvalEnv(value)
-			if evErr != nil {
-				return evErr
-			}
 		}
 
 		data[index] = value
@@ -200,8 +193,9 @@ func (id *InterpolatedDuration) UnmarshalYAML(value *yaml.Node) error {
 		return errors.Wrapf(err, "could not decode value '%v' (line '%d') into string", value.Value, value.Line)
 	}
 
-	if match := reVar.FindStringSubmatch(str); len(match) > 0 {
+	str, err := envsubst.EvalEnv(str)
-		str = os.Getenv(match[1])
+	if err != nil {
+		return errors.WithStack(err)
 	}
 
 	duration, err := time.ParseDuration(str)

internal/config/profiling.go

@@ -0,0 +1,15 @@
+package config
+
+type ProfilingConfig struct {
+	Enabled   InterpolatedBool   `yaml:"enabled"`
+	Endpoint  InterpolatedString `yaml:"endpoint"`
+	BasicAuth *BasicAuthConfig   `yaml:"basicAuth"`
+}
+
+func NewDefaultProfilingConfig() ProfilingConfig {
+	return ProfilingConfig{
+		Enabled:   true,
+		Endpoint:  "/.bouncer/profiling",
+		BasicAuth: nil,
+	}
+}

internal/config/proxy_server.go

@@ -7,22 +7,28 @@ import (
 )
 
 type ProxyServerConfig struct {
-	HTTP      HTTPConfig      `yaml:"http"`
+	Debug     InterpolatedBool `yaml:"debug"`
-	Metrics   MetricsConfig   `yaml:"metrics"`
+	HTTP      HTTPConfig       `yaml:"http"`
-	Transport TransportConfig `yaml:"transport"`
+	Metrics   MetricsConfig    `yaml:"metrics"`
-	Dial      DialConfig      `yaml:"dial"`
+	Profiling ProfilingConfig  `yaml:"profiling"`
-	Sentry    SentryConfig    `yaml:"sentry"`
+	Transport TransportConfig  `yaml:"transport"`
-	Cache     CacheConfig     `yaml:"cache"`
+	Dial      DialConfig       `yaml:"dial"`
+	Sentry    SentryConfig     `yaml:"sentry"`
+	Cache     CacheConfig      `yaml:"cache"`
+	Templates TemplatesConfig  `yaml:"templates"`
 }
 
 func NewDefaultProxyServerConfig() ProxyServerConfig {
 	return ProxyServerConfig{
+		Debug:     false,
 		HTTP:      NewHTTPConfig("0.0.0.0", 8080),
 		Metrics:   NewDefaultMetricsConfig(),
 		Transport: NewDefaultTransportConfig(),
 		Dial:      NewDefaultDialConfig(),
 		Sentry:    NewDefaultSentryConfig(),
 		Cache:     NewDefaultCacheConfig(),
+		Templates: NewDefaultTemplatesConfig(),
+		Profiling: NewDefaultProfilingConfig(),
 	}
 }
 
@@ -115,3 +121,13 @@ func NewDefaultCacheConfig() CacheConfig {
 		TTL: *NewInterpolatedDuration(time.Second * 30),
 	}
 }
+
+type TemplatesConfig struct {
+	Dir InterpolatedString `yaml:"dir"`
+}
+
+func NewDefaultTemplatesConfig() TemplatesConfig {
+	return TemplatesConfig{
+		Dir: "./templates",
+	}
+}

internal/config/sentry.go

@@ -28,10 +28,10 @@ func NewDefaultSentryConfig() SentryConfig {
 		Debug:              false,
 		FlushTimeout:       NewInterpolatedDuration(2 * time.Second),
 		AttachStacktrace:   true,
-		SampleRate:         1,
+		SampleRate:         0.2,
 		EnableTracing:      true,
 		TracesSampleRate:   0.2,
-		ProfilesSampleRate: 1,
+		ProfilesSampleRate: 0.2,
 		IgnoreErrors:       []string{},
 		SendDefaultPII:     false,
 		ServerName:         "",

internal/proxy/director/context.go

@@ -34,19 +34,6 @@ func OriginalURL(ctx context.Context) (*url.URL, error) {
 	return url, nil
 }
 
-func withProxy(ctx context.Context, proxy *store.Proxy) context.Context {
-	return context.WithValue(ctx, contextKeyProxy, proxy)
-}
-
-func ctxProxy(ctx context.Context) (*store.Proxy, error) {
-	proxy, err := ctxValue[*store.Proxy](ctx, contextKeyProxy)
-	if err != nil {
-		return nil, errors.WithStack(err)
-	}
-
-	return proxy, nil
-}
-
 func withLayers(ctx context.Context, layers []*store.Layer) context.Context {
 	return context.WithValue(ctx, contextKeyLayers, layers)
 }

internal/proxy/director/director.go

@@ -36,15 +36,15 @@ func (d *Director) rewriteRequest(r *http.Request) (*http.Request, error) {
 	ctx = withOriginalURL(ctx, url)
 	ctx = logger.With(ctx, logger.F("url", url.String()))
 
-	var match *store.Proxy
+	layers := make([]*store.Layer, 0)
 
-MAIN:
 	for _, p := range proxies {
 		for _, from := range p.From {
 			logger.Debug(
 				ctx, "matching request with proxy's from",
 				logger.F("from", from),
 			)
+
 			if matches := wildcard.Match(url.String(), from); !matches {
 				continue
 			}
@@ -54,38 +54,41 @@ MAIN:
 				logger.F("from", from),
 			)
 
-			match = p
+			ctx = logger.With(ctx,
-			break MAIN
+				logger.F("proxy", p.Name),
+				logger.F("host", r.Host),
+				logger.F("remoteAddr", r.RemoteAddr),
+			)
+
+			metricProxyRequestsTotal.With(prometheus.Labels{metricLabelProxy: string(p.Name)}).Add(1)
+
+			proxyLayers, err := d.getLayers(ctx, p.Name)
+			if err != nil {
+				return r, errors.WithStack(err)
+			}
+
+			layers = append(layers, proxyLayers...)
+
+			if p.To == "" {
+				continue
+			}
+
+			toURL, err := url.Parse(p.To)
+			if err != nil {
+				return r, errors.WithStack(err)
+			}
+
+			r.URL.Host = toURL.Host
+			r.URL.Scheme = toURL.Scheme
+			r.URL.Path = toURL.JoinPath(r.URL.Path).Path
+
+			ctx = withLayers(ctx, layers)
+			r = r.WithContext(ctx)
+
+			return r, nil
 		}
 	}
 
-	if match == nil {
-		return r, nil
-	}
-
-	toURL, err := url.Parse(match.To)
-	if err != nil {
-		return r, errors.WithStack(err)
-	}
-
-	r.URL.Host = toURL.Host
-	r.URL.Scheme = toURL.Scheme
-
-	ctx = logger.With(ctx,
-		logger.F("proxy", match.Name),
-		logger.F("host", r.Host),
-		logger.F("remoteAddr", r.RemoteAddr),
-	)
-
-	metricProxyRequestsTotal.With(prometheus.Labels{metricLabelProxy: string(match.Name)}).Add(1)
-
-	ctx = withProxy(ctx, match)
-
-	layers, err := d.getLayers(ctx, match.Name)
-	if err != nil {
-		return r, errors.WithStack(err)
-	}
-
 	ctx = withLayers(ctx, layers)
 	r = r.WithContext(ctx)
 

internal/proxy/director/layer/authn/oidc/authenticator.go

@@ -401,8 +401,14 @@ func (a *Authenticator) getClient(options *LayerOptions, redirectURL string) (*C
 	return client, nil
 }
 
+const defaultCookieNamePrefix = "_bouncer_authn_oidc"
+
 func (a *Authenticator) getCookieName(cookieName string, proxyName store.ProxyName, layerName store.LayerName) string {
-	return strings.ToLower(fmt.Sprintf("%s_%s_%s", cookieName, proxyName, layerName))
+	if cookieName != "" {
+		return cookieName
+	}
+
+	return strings.ToLower(fmt.Sprintf("%s_%s_%s", defaultCookieNamePrefix, proxyName, layerName))
 }
 
 var (

internal/proxy/director/layer/authn/oidc/layer_options.go

@@ -8,8 +8,6 @@ import (
 	"github.com/pkg/errors"
 )
 
-const defaultCookieName = "_bouncer_authn_oidc"
-
 type LayerOptions struct {
 	authn.LayerOptions
 	OIDC   OIDCOptions   `mapstructure:"oidc"`
@@ -57,7 +55,7 @@ func fromStoreOptions(storeOptions store.LayerOptions) (*LayerOptions, error) {
 			Scopes:                 []string{"openid"},
 		},
 		Cookie: CookieOptions{
-			Name:     defaultCookieName,
+			Name:     "",
 			Path:     "/",
 			HTTPOnly: true,
 			MaxAge:   time.Hour,

internal/proxy/director/layer/authn/rules.go

@@ -1,70 +1,16 @@
 package authn
 
 import (
-	"fmt"
 	"net/http"
-	"strconv"
-	"strings"
-	"time"
 
-	"forge.cadoles.com/Cadoles/go-proxy/wildcard"
+	"forge.cadoles.com/cadoles/bouncer/internal/rule"
+	ruleHTTP "forge.cadoles.com/cadoles/bouncer/internal/rule/http"
 	"github.com/expr-lang/expr"
 	"github.com/pkg/errors"
 )
 
-func (l *Layer) getHeaderRuleOptions(r *http.Request) []expr.Option {
+type Env struct {
-	options := make([]expr.Option, 0)
+	User *User `expr:"user"`
-
-	setHeader := expr.Function(
-		"set_header",
-		func(params ...any) (any, error) {
-			name := params[0].(string)
-			rawValue := params[1]
-
-			var value string
-			switch v := rawValue.(type) {
-			case []string:
-				value = strings.Join(v, ",")
-			case time.Time:
-				value = strconv.FormatInt(v.UTC().Unix(), 10)
-			case time.Duration:
-				value = strconv.FormatInt(int64(v.Seconds()), 10)
-			default:
-				value = fmt.Sprintf("%v", rawValue)
-			}
-
-			r.Header.Set(name, value)
-
-			return true, nil
-		},
-		new(func(string, string) bool),
-	)
-
-	options = append(options, setHeader)
-
-	delHeaders := expr.Function(
-		"del_headers",
-		func(params ...any) (any, error) {
-			pattern := params[0].(string)
-			deleted := false
-
-			for key := range r.Header {
-				if !wildcard.Match(key, pattern) {
-					continue
-				}
-
-				r.Header.Del(key)
-				deleted = true
-			}
-
-			return deleted, nil
-		},
-		new(func(string) bool),
-	)
-
-	options = append(options, delHeaders)
-
-	return options
 }
 
 func (l *Layer) applyRules(r *http.Request, options *LayerOptions, user *User) error {
@@ -73,38 +19,39 @@ func (l *Layer) applyRules(r *http.Request, options *LayerOptions, user *User) e
 		return nil
 	}
 
-	env := map[string]any{
+	engine, err := rule.NewEngine[*Env](
-		"user": user,
+		rule.WithRules(options.Rules...),
+		rule.WithExpr(getAuthnAPI()...),
+		ruleHTTP.WithRequestFuncs(r),
+	)
+	if err != nil {
+		return errors.WithStack(err)
 	}
 
-	rulesOptions := l.getHeaderRuleOptions(r)
+	env := &Env{
+		User: user,
+	}
 
-	var ruleErr error
+	if _, err := engine.Apply(env); err != nil {
-	forbidden := expr.Function(
+		return errors.WithStack(err)
-		"forbidden",
-		func(params ...any) (any, error) {
-			ruleErr = errors.WithStack(ErrForbidden)
-			return true, nil
-		},
-		new(func() bool),
-	)
-
-	rulesOptions = append(rulesOptions, forbidden)
-
-	for i, r := range rules {
-		program, err := expr.Compile(r, rulesOptions...)
-		if err != nil {
-			return errors.Wrapf(err, "could not compile rule #%d", i)
-		}
-
-		if _, err := expr.Run(program, env); err != nil {
-			return errors.Wrapf(err, "could not execute rule #%d", i)
-		}
-
-		if ruleErr != nil {
-			return errors.WithStack(ruleErr)
-		}
 	}
 
 	return nil
 }
+
+func getAuthnAPI() []expr.Option {
+	options := make([]expr.Option, 0)
+
+	// forbidden() allows the layer to hijack the current request and return a 403 Forbidden HTTP status
+	forbidden := expr.Function(
+		"forbidden",
+		func(params ...any) (any, error) {
+			return true, errors.WithStack(ErrForbidden)
+		},
+		new(func() bool),
+	)
+
+	options = append(options, forbidden)
+
+	return options
+}

internal/proxy/director/layer/rewriter/layer-options.json

@@ -0,0 +1,38 @@
+{
+    "type": "object",
+    "properties": {
+        "rules": {
+            "title": "Règles appliquées aux requêtes/réponses transitant par le proxy",
+            "type": "object",
+            "properties": {
+                "request": {
+                    "title": "Règles appliquées aux requêtes transitant par le proxy",
+                    "type": "array",
+                    "items": {
+                        "type": "string"
+                    }
+                },
+                "response": {
+                    "title": "Règles appliquées aux réponses transitant par le proxy",
+                    "type": "array",
+                    "items": {
+                        "type": "string"
+                    }
+                }
+            },
+            "additionalProperties": false
+        },
+        "matchURLs": {
+            "title": "Liste de filtrage des URLs sur lesquelles le layer est actif",
+            "description": "Par exemple, si vous souhaitez limiter votre layer à l'ensemble d'une section '`/blog`' d'un site, vous pouvez déclarer la valeur `['*/blog*']`. Les autres URLs du site ne seront pas affectées par ce layer.",
+            "default": [
+                "*"
+            ],
+            "type": "array",
+            "items": {
+                "type": "string"
+            }
+        }
+    },
+    "additionalProperties": false
+}

internal/proxy/director/layer/rewriter/layer.go

@@ -0,0 +1,84 @@
+package rewriter
+
+import (
+	"net/http"
+
+	proxy "forge.cadoles.com/Cadoles/go-proxy"
+	"forge.cadoles.com/Cadoles/go-proxy/wildcard"
+	"forge.cadoles.com/cadoles/bouncer/internal/proxy/director"
+	"forge.cadoles.com/cadoles/bouncer/internal/store"
+	"github.com/pkg/errors"
+	"gitlab.com/wpetit/goweb/logger"
+)
+
+const LayerType store.LayerType = "rewriter"
+
+type Layer struct{}
+
+func (l *Layer) LayerType() store.LayerType {
+	return LayerType
+}
+
+func (l *Layer) Middleware(layer *store.Layer) proxy.Middleware {
+	return func(next http.Handler) http.Handler {
+		fn := func(w http.ResponseWriter, r *http.Request) {
+			ctx := r.Context()
+
+			options, err := fromStoreOptions(layer.Options)
+			if err != nil {
+				logger.Error(ctx, "could not parse layer options", logger.E(errors.WithStack(err)))
+				http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
+
+				return
+			}
+
+			matches := wildcard.MatchAny(r.URL.String(), options.MatchURLs...)
+			if !matches {
+				next.ServeHTTP(w, r)
+
+				return
+			}
+
+			if err := l.applyRequestRules(r, options); err != nil {
+				logger.Error(ctx, "could not apply request rules", logger.E(errors.WithStack(err)))
+				http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
+
+				return
+			}
+
+			next.ServeHTTP(w, r)
+		}
+
+		return http.HandlerFunc(fn)
+	}
+}
+
+// ResponseTransformer implements director.ResponseTransformerLayer.
+func (l *Layer) ResponseTransformer(layer *store.Layer) proxy.ResponseTransformer {
+	return func(r *http.Response) error {
+		options, err := fromStoreOptions(layer.Options)
+		if err != nil {
+			return errors.WithStack(err)
+		}
+
+		matches := wildcard.MatchAny(r.Request.URL.String(), options.MatchURLs...)
+		if !matches {
+			return nil
+		}
+
+		if err := l.applyResponseRules(r, options); err != nil {
+			return errors.WithStack(err)
+		}
+
+		return nil
+	}
+}
+
+func New(funcs ...OptionFunc) *Layer {
+	return &Layer{}
+}
+
+var (
+	_ director.MiddlewareLayer          = &Layer{}
+	_ director.ResponseTransformerLayer = &Layer{}
+)

internal/proxy/director/layer/rewriter/layer_options.go

@@ -0,0 +1,56 @@
+package rewriter
+
+import (
+	"forge.cadoles.com/cadoles/bouncer/internal/store"
+	"github.com/mitchellh/mapstructure"
+	"github.com/pkg/errors"
+)
+
+type LayerOptions struct {
+	MatchURLs []string `mapstructure:"matchURLs"`
+	Rules     Rules    `mapstructure:"rules"`
+}
+
+type Rules struct {
+	Request  []string `mapstructure:"request"`
+	Response []string `mapstructure:"response"`
+}
+
+func DefaultLayerOptions() LayerOptions {
+	return LayerOptions{
+		MatchURLs: []string{"*"},
+		Rules: Rules{
+			Request:  []string{},
+			Response: []string{},
+		},
+	}
+
+}
+
+func fromStoreOptions(storeOptions store.LayerOptions) (*LayerOptions, error) {
+	layerOptions := DefaultLayerOptions()
+
+	if err := FromStoreOptions(storeOptions, &layerOptions); err != nil {
+		return nil, errors.WithStack(err)
+	}
+
+	return &layerOptions, nil
+}
+
+func FromStoreOptions(storeOptions store.LayerOptions, dest any) error {
+	config := mapstructure.DecoderConfig{
+		Result:     dest,
+		ZeroFields: true,
+	}
+
+	decoder, err := mapstructure.NewDecoder(&config)
+	if err != nil {
+		return errors.WithStack(err)
+	}
+
+	if err := decoder.Decode(storeOptions); err != nil {
+		return errors.WithStack(err)
+	}
+
+	return nil
+}

internal/proxy/director/layer/rewriter/options.go

@@ -0,0 +1,16 @@
+package rewriter
+
+type Options struct {
+}
+
+type OptionFunc func(opts *Options)
+
+func NewOptions(funcs ...OptionFunc) *Options {
+	opts := &Options{}
+
+	for _, fn := range funcs {
+		fn(opts)
+	}
+
+	return opts
+}

internal/proxy/director/layer/rewriter/rules.go

@@ -0,0 +1,203 @@
+package rewriter
+
+import (
+	"net/http"
+
+	"forge.cadoles.com/cadoles/bouncer/internal/rule"
+	ruleHTTP "forge.cadoles.com/cadoles/bouncer/internal/rule/http"
+	"github.com/pkg/errors"
+)
+
+type RequestEnv struct {
+	Request RequestInfo `expr:"request"`
+}
+
+type URLEnv struct {
+	Scheme      string      `expr:"scheme"`
+	Opaque      string      `expr:"opaque"`
+	User        UserInfoEnv `expr:"user"`
+	Host        string      `expr:"host"`
+	Path        string      `expr:"path"`
+	RawPath     string      `expr:"rawPath"`
+	RawQuery    string      `expr:"rawQuery"`
+	Fragment    string      `expr:"fragment"`
+	RawFragment string      `expr:"rawFragment"`
+}
+
+type UserInfoEnv struct {
+	Username string `expr:"username"`
+	Password string `expr:"password"`
+}
+
+type RequestInfo struct {
+	Method           string              `expr:"method"`
+	URL              URLEnv              `expr:"url"`
+	RawURL           string              `expr:"rawUrl"`
+	Proto            string              `expr:"proto"`
+	ProtoMajor       int                 `expr:"protoMajor"`
+	ProtoMinor       int                 `expr:"protoMinor"`
+	Header           map[string][]string `expr:"header"`
+	ContentLength    int64               `expr:"contentLength"`
+	TransferEncoding []string            `expr:"transferEncoding"`
+	Host             string              `expr:"host"`
+	Trailer          map[string][]string `expr:"trailer"`
+	RemoteAddr       string              `expr:"remoteAddr"`
+	RequestURI       string              `expr:"requestUri"`
+}
+
+func (l *Layer) applyRequestRules(r *http.Request, options *LayerOptions) error {
+	rules := options.Rules.Request
+	if len(rules) == 0 {
+		return nil
+	}
+
+	engine, err := l.getRequestRuleEngine(r, options)
+	if err != nil {
+		return errors.WithStack(err)
+	}
+
+	env := &RequestEnv{
+		Request: RequestInfo{
+			Method: r.Method,
+			URL: URLEnv{
+				Scheme: r.URL.Scheme,
+				Opaque: r.URL.Opaque,
+				User: UserInfoEnv{
+					Username: r.URL.User.Username(),
+					Password: func() string {
+						passwd, _ := r.URL.User.Password()
+						return passwd
+					}(),
+				},
+				Host:        r.URL.Host,
+				Path:        r.URL.Path,
+				RawPath:     r.URL.RawPath,
+				RawQuery:    r.URL.RawQuery,
+				Fragment:    r.URL.Fragment,
+				RawFragment: r.URL.RawFragment,
+			},
+			RawURL:           r.URL.String(),
+			Proto:            r.Proto,
+			ProtoMajor:       r.ProtoMajor,
+			ProtoMinor:       r.ProtoMinor,
+			Header:           r.Header,
+			ContentLength:    r.ContentLength,
+			TransferEncoding: r.TransferEncoding,
+			Host:             r.Host,
+			Trailer:          r.Trailer,
+			RemoteAddr:       r.RemoteAddr,
+			RequestURI:       r.RequestURI,
+		},
+	}
+
+	if _, err := engine.Apply(env); err != nil {
+		return errors.WithStack(err)
+	}
+
+	return nil
+}
+
+func (l *Layer) getRequestRuleEngine(r *http.Request, options *LayerOptions) (*rule.Engine[*RequestEnv], error) {
+	engine, err := rule.NewEngine[*RequestEnv](
+		rule.WithRules(options.Rules.Request...),
+		ruleHTTP.WithRequestFuncs(r),
+	)
+	if err != nil {
+		return nil, errors.WithStack(err)
+	}
+
+	return engine, nil
+}
+
+type ResponseEnv struct {
+	Request  RequestInfo  `expr:"request"`
+	Response ResponseInfo `expr:"response"`
+}
+
+type ResponseInfo struct {
+	Status           string              `expr:"status"`
+	StatusCode       int                 `expr:"statusCode"`
+	Proto            string              `expr:"proto"`
+	ProtoMajor       int                 `expr:"protoMajor"`
+	ProtoMinor       int                 `expr:"protoMinor"`
+	Header           map[string][]string `expr:"header"`
+	ContentLength    int64               `expr:"contentLength"`
+	TransferEncoding []string            `expr:"transferEncoding"`
+	Uncompressed     bool                `expr:"uncompressed"`
+	Trailer          map[string][]string `expr:"trailer"`
+}
+
+func (l *Layer) applyResponseRules(r *http.Response, options *LayerOptions) error {
+	rules := options.Rules.Response
+	if len(rules) == 0 {
+		return nil
+	}
+
+	engine, err := l.getResponseRuleEngine(r, options)
+	if err != nil {
+		return errors.WithStack(err)
+	}
+
+	env := &ResponseEnv{
+		Request: RequestInfo{
+			Method: r.Request.Method,
+			URL: URLEnv{
+				Scheme: r.Request.URL.Scheme,
+				Opaque: r.Request.URL.Opaque,
+				User: UserInfoEnv{
+					Username: r.Request.URL.User.Username(),
+					Password: func() string {
+						passwd, _ := r.Request.URL.User.Password()
+						return passwd
+					}(),
+				},
+				Host:        r.Request.URL.Host,
+				Path:        r.Request.URL.Path,
+				RawPath:     r.Request.URL.RawPath,
+				RawQuery:    r.Request.URL.RawQuery,
+				Fragment:    r.Request.URL.Fragment,
+				RawFragment: r.Request.URL.RawFragment,
+			},
+			RawURL:           r.Request.URL.String(),
+			Proto:            r.Request.Proto,
+			ProtoMajor:       r.Request.ProtoMajor,
+			ProtoMinor:       r.Request.ProtoMinor,
+			Header:           r.Request.Header,
+			ContentLength:    r.Request.ContentLength,
+			TransferEncoding: r.Request.TransferEncoding,
+			Host:             r.Request.Host,
+			Trailer:          r.Request.Trailer,
+			RemoteAddr:       r.Request.RemoteAddr,
+			RequestURI:       r.Request.RequestURI,
+		},
+		Response: ResponseInfo{
+			Proto:            r.Proto,
+			ProtoMajor:       r.ProtoMajor,
+			ProtoMinor:       r.ProtoMinor,
+			Header:           r.Header,
+			ContentLength:    r.ContentLength,
+			TransferEncoding: r.TransferEncoding,
+			Trailer:          r.Trailer,
+			Status:           r.Status,
+			StatusCode:       r.StatusCode,
+		},
+	}
+
+	if _, err := engine.Apply(env); err != nil {
+		return errors.WithStack(err)
+	}
+
+	return nil
+}
+
+func (l *Layer) getResponseRuleEngine(r *http.Response, options *LayerOptions) (*rule.Engine[*ResponseEnv], error) {
+	engine, err := rule.NewEngine[*ResponseEnv](
+		rule.WithRules(options.Rules.Response...),
+		ruleHTTP.WithResponseFuncs(r),
+	)
+	if err != nil {
+		return nil, errors.WithStack(err)
+	}
+
+	return engine, nil
+}

internal/proxy/director/layer/rewriter/schema.go

@@ -0,0 +1,8 @@
+package rewriter
+
+import (
+	_ "embed"
+)
+
+//go:embed layer-options.json
+var RawLayerOptionsSchema []byte

internal/proxy/proxy_test.go

@@ -1,156 +0,0 @@
-package proxy_test
-
-import (
-	"context"
-	"io"
-	"net/http"
-	"net/http/httptest"
-	"net/http/httputil"
-	"net/url"
-	"os"
-	"testing"
-	"time"
-
-	"forge.cadoles.com/Cadoles/go-proxy"
-	"forge.cadoles.com/cadoles/bouncer/internal/cache/memory"
-	"forge.cadoles.com/cadoles/bouncer/internal/cache/ttl"
-	"forge.cadoles.com/cadoles/bouncer/internal/proxy/director"
-	"forge.cadoles.com/cadoles/bouncer/internal/store"
-	redisStore "forge.cadoles.com/cadoles/bouncer/internal/store/redis"
-	"github.com/pkg/errors"
-	"github.com/redis/go-redis/v9"
-)
-
-func BenchmarkProxy(b *testing.B) {
-	redisEndpoint := os.Getenv("BOUNCER_BENCH_REDIS_ADDR")
-	if redisEndpoint == "" {
-		redisEndpoint = "127.0.0.1:6379"
-	}
-
-	client := redis.NewUniversalClient(&redis.UniversalOptions{
-		Addrs: []string{redisEndpoint},
-	})
-
-	proxyRepository := redisStore.NewProxyRepository(client)
-	layerRepository := redisStore.NewLayerRepository(client)
-
-	backend := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		w.WriteHeader(http.StatusOK)
-		if _, err := w.Write([]byte("Hello, world.")); err != nil {
-			b.Logf("[ERROR] %+v", errors.WithStack(err))
-		}
-	}))
-	defer backend.Close()
-
-	if err := waitFor(backend.URL, 5*time.Second); err != nil {
-		b.Fatalf("[FATAL] %+v", errors.WithStack(err))
-	}
-
-	b.Logf("started backend '%s'", backend.URL)
-
-	ctx := context.Background()
-
-	proxyName := store.ProxyName(b.Name())
-
-	b.Logf("creating proxy '%s'", proxyName)
-
-	if err := proxyRepository.DeleteProxy(ctx, proxyName); err != nil {
-		b.Fatalf("[FATAL] %+v", errors.WithStack(err))
-	}
-
-	if _, err := proxyRepository.CreateProxy(ctx, proxyName, backend.URL, "*"); err != nil {
-		b.Fatalf("[FATAL] %+v", errors.WithStack(err))
-	}
-
-	if _, err := proxyRepository.UpdateProxy(ctx, proxyName, store.WithProxyUpdateEnabled(true)); err != nil {
-		b.Fatalf("[FATAL] %+v", errors.WithStack(err))
-	}
-
-	director := director.New(
-		proxyRepository, layerRepository,
-		director.WithLayerCache(
-			ttl.NewCache(
-				memory.NewCache[string, []*store.Layer](),
-				memory.NewCache[string, time.Time](),
-				30*time.Second,
-			),
-		),
-		director.WithProxyCache(
-			ttl.NewCache(
-				memory.NewCache[string, []*store.Proxy](),
-				memory.NewCache[string, time.Time](),
-				30*time.Second,
-			),
-		),
-	)
-
-	directorMiddleware := director.Middleware()
-
-	handler := proxy.New(
-		proxy.WithRequestTransformers(
-			director.RequestTransformer(),
-		),
-		proxy.WithResponseTransformers(
-			director.ResponseTransformer(),
-		),
-		proxy.WithReverseProxyFactory(func(ctx context.Context, target *url.URL) *httputil.ReverseProxy {
-			reverse := httputil.NewSingleHostReverseProxy(target)
-			reverse.ErrorHandler = func(w http.ResponseWriter, r *http.Request, err error) {
-				b.Logf("[ERROR] %s", errors.WithStack(err))
-			}
-			return reverse
-		}),
-	)
-
-	server := httptest.NewServer(directorMiddleware(handler))
-	defer server.Close()
-
-	b.Logf("started proxy '%s'", server.URL)
-
-	httpClient := server.Client()
-
-	b.ResetTimer()
-
-	for i := 0; i < b.N; i++ {
-		res, err := httpClient.Get(server.URL)
-		if err != nil {
-			b.Errorf("could not fetch server url: %+v", errors.WithStack(err))
-		}
-
-		body, err := io.ReadAll(res.Body)
-		if err != nil {
-			b.Errorf("could not read response body: %+v", errors.WithStack(err))
-		}
-
-		b.Logf("%s - %v", res.Status, string(body))
-
-		if err := res.Body.Close(); err != nil {
-			b.Errorf("could not close response body: %+v", errors.WithStack(err))
-		}
-	}
-}
-
-func waitFor(url string, ttl time.Duration) error {
-	var lastErr error
-	timeout := time.After(ttl)
-	for {
-		select {
-		case <-timeout:
-			if lastErr != nil {
-				return lastErr
-			}
-
-			return errors.New("wait timed out")
-		default:
-			res, err := http.Get(url)
-			if err != nil {
-				lastErr = errors.WithStack(err)
-				continue
-			}
-
-			if res.StatusCode >= 200 && res.StatusCode < 400 {
-				return nil
-			}
-		}
-	}
-}

internal/proxy/server.go

@@ -3,11 +3,15 @@ package proxy
 import (
 	"context"
 	"fmt"
+	"html/template"
 	"log"
 	"net"
 	"net/http"
 	"net/http/httputil"
+	"net/http/pprof"
 	"net/url"
+	"path/filepath"
+	"strconv"
 	"time"
 
 	"forge.cadoles.com/Cadoles/go-proxy"
@@ -17,6 +21,8 @@ import (
 	"forge.cadoles.com/cadoles/bouncer/internal/config"
 	"forge.cadoles.com/cadoles/bouncer/internal/proxy/director"
 	"forge.cadoles.com/cadoles/bouncer/internal/store"
+
+	"github.com/Masterminds/sprig/v3"
 	"github.com/getsentry/sentry-go"
 	sentryhttp "github.com/getsentry/sentry-go/http"
 	"github.com/go-chi/chi/v5"
@@ -141,6 +147,34 @@ func (s *Server) run(parentCtx context.Context, addrs chan net.Addr, errs chan e
 		})
 	}
 
+	if s.serverConfig.Profiling.Enabled {
+		profiling := s.serverConfig.Profiling
+		logger.Info(ctx, "enabling profiling", logger.F("endpoint", profiling.Endpoint))
+
+		router.Group(func(r chi.Router) {
+			if profiling.BasicAuth != nil {
+				logger.Info(ctx, "enabling authentication on metrics endpoint")
+
+				r.Use(middleware.BasicAuth(
+					"profiling",
+					profiling.BasicAuth.CredentialsMap(),
+				))
+			}
+
+			r.Route(string(profiling.Endpoint), func(r chi.Router) {
+				r.HandleFunc("/", pprof.Index)
+				r.HandleFunc("/cmdline", pprof.Cmdline)
+				r.HandleFunc("/profile", pprof.Profile)
+				r.HandleFunc("/symbol", pprof.Symbol)
+				r.HandleFunc("/trace", pprof.Trace)
+				r.HandleFunc("/{name}", func(w http.ResponseWriter, r *http.Request) {
+					name := chi.URLParam(r, "name")
+					pprof.Handler(name).ServeHTTP(w, r)
+				})
+			})
+		})
+	}
+
 	router.Group(func(r chi.Router) {
 		r.Use(director.Middleware())
 
@@ -152,6 +186,7 @@ func (s *Server) run(parentCtx context.Context, addrs chan net.Addr, errs chan e
 				director.ResponseTransformer(),
 			),
 			proxy.WithReverseProxyFactory(s.createReverseProxy),
+			proxy.WithDefaultHandler(http.HandlerFunc(s.handleDefault)),
 		)
 
 		r.Handle("/*", handler)
@@ -180,18 +215,83 @@ func (s *Server) createReverseProxy(ctx context.Context, target *url.URL) *httpu
 	httpTransport.DialContext = dialer.DialContext
 
 	reverseProxy.Transport = httpTransport
-	reverseProxy.ErrorHandler = s.errorHandler
+	reverseProxy.ErrorHandler = s.handleError
 
 	return reverseProxy
 }
 
-func (s *Server) errorHandler(w http.ResponseWriter, r *http.Request, err error) {
+func (s *Server) handleDefault(w http.ResponseWriter, r *http.Request) {
+	err := errors.Errorf("no proxy target found")
+
+	logger.Error(r.Context(), "proxy error", logger.E(err))
+	sentry.CaptureException(err)
+
+	s.renderErrorPage(w, r, err, http.StatusBadGateway, http.StatusText(http.StatusBadGateway))
+}
+
+func (s *Server) handleError(w http.ResponseWriter, r *http.Request, err error) {
 	err = errors.WithStack(err)
 
 	logger.Error(r.Context(), "proxy error", logger.E(err))
 	sentry.CaptureException(err)
 
-	http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
+	s.renderErrorPage(w, r, err, http.StatusBadGateway, http.StatusText(http.StatusBadGateway))
+}
+
+func (s *Server) renderErrorPage(w http.ResponseWriter, r *http.Request, err error, statusCode int, status string) {
+	templateData := struct {
+		StatusCode int
+		Status     string
+		Err        error
+		Debug      bool
+	}{
+		Debug:      bool(s.serverConfig.Debug),
+		StatusCode: statusCode,
+		Status:     status,
+		Err:        err,
+	}
+
+	w.WriteHeader(statusCode)
+	s.renderPage(w, r, "error", strconv.FormatInt(int64(statusCode), 10), templateData)
+}
+
+func (s *Server) renderPage(w http.ResponseWriter, r *http.Request, page string, block string, templateData any) {
+	ctx := r.Context()
+
+	templatesConf := s.serverConfig.Templates
+
+	pattern := filepath.Join(string(templatesConf.Dir), page+".gohtml")
+
+	logger.Info(ctx, "loading proxy templates", logger.F("pattern", pattern))
+
+	tmpl, err := template.New("").Funcs(sprig.FuncMap()).ParseGlob(pattern)
+	if err != nil {
+		logger.Error(ctx, "could not load proxy templates", logger.E(errors.WithStack(err)))
+		http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
+
+		return
+	}
+
+	w.Header().Add("Cache-Control", "no-cache")
+
+	blockTmpl := tmpl.Lookup(block)
+	if blockTmpl == nil {
+		blockTmpl = tmpl.Lookup("default")
+	}
+
+	if blockTmpl == nil {
+		logger.Error(ctx, "could not find template block nor default one", logger.F("block", block))
+		http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
+
+		return
+	}
+
+	if err := blockTmpl.Execute(w, templateData); err != nil {
+		logger.Error(ctx, "could not render proxy page", logger.E(errors.WithStack(err)))
+		http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
+
+		return
+	}
 }
 
 func NewServer(funcs ...OptionFunc) *Server {

internal/rule/engine.go

@@ -0,0 +1,44 @@
+package rule
+
+import (
+	"github.com/expr-lang/expr"
+	"github.com/expr-lang/expr/vm"
+	"github.com/pkg/errors"
+)
+
+type Engine[E any] struct {
+	rules []*vm.Program
+}
+
+func (e *Engine[E]) Apply(env E) ([]any, error) {
+	results := make([]any, 0, len(e.rules))
+	for i, r := range e.rules {
+		result, err := expr.Run(r, env)
+		if err != nil {
+			return nil, errors.Wrapf(err, "could not run rule #%d", i)
+		}
+
+		results = append(results, result)
+	}
+
+	return results, nil
+}
+
+func NewEngine[E any](funcs ...OptionFunc) (*Engine[E], error) {
+	opts := NewOptions(funcs...)
+
+	engine := &Engine[E]{
+		rules: make([]*vm.Program, 0, len(opts.Rules)),
+	}
+
+	for i, r := range opts.Rules {
+		program, err := expr.Compile(r, opts.Expr...)
+		if err != nil {
+			return nil, errors.Wrapf(err, "could not compile rule #%d", i)
+		}
+
+		engine.rules = append(engine.rules, program)
+	}
+
+	return engine, nil
+}

internal/rule/http/option.go

@@ -0,0 +1,42 @@
+package http
+
+import (
+	"net/http"
+
+	"forge.cadoles.com/cadoles/bouncer/internal/rule"
+	"github.com/expr-lang/expr"
+)
+
+func WithRequestFuncs(r *http.Request) rule.OptionFunc {
+	return func(opts *rule.Options) {
+		funcs := []expr.Option{
+			setRequestURL(r),
+			setRequestHeaderFunc(r),
+			addRequestHeaderFunc(r),
+			delRequestHeadersFunc(r),
+			setRequestHostFunc(r),
+		}
+
+		if len(opts.Expr) == 0 {
+			opts.Expr = make([]expr.Option, 0)
+		}
+
+		opts.Expr = append(opts.Expr, funcs...)
+	}
+}
+
+func WithResponseFuncs(r *http.Response) rule.OptionFunc {
+	return func(opts *rule.Options) {
+		funcs := []expr.Option{
+			setResponseHeaderFunc(r),
+			addResponseHeaderFunc(r),
+			delResponseHeadersFunc(r),
+		}
+
+		if len(opts.Expr) == 0 {
+			opts.Expr = make([]expr.Option, 0)
+		}
+
+		opts.Expr = append(opts.Expr, funcs...)
+	}
+}

internal/rule/http/request.go

@@ -0,0 +1,122 @@
+package http
+
+import (
+	"fmt"
+	"net/http"
+	"net/url"
+	"strconv"
+	"strings"
+	"time"
+
+	"forge.cadoles.com/Cadoles/go-proxy/wildcard"
+	"github.com/expr-lang/expr"
+	"github.com/pkg/errors"
+)
+
+func setRequestHostFunc(r *http.Request) expr.Option {
+	return expr.Function(
+		"set_host",
+		func(params ...any) (any, error) {
+			host := params[0].(string)
+			r.Host = host
+
+			return true, nil
+		},
+		new(func(string) bool),
+	)
+}
+
+func setRequestURL(r *http.Request) expr.Option {
+	return expr.Function(
+		"set_url",
+		func(params ...any) (any, error) {
+			rawURL := params[0].(string)
+
+			url, err := url.Parse(rawURL)
+			if err != nil {
+				return false, errors.WithStack(err)
+			}
+
+			r.URL = url
+
+			return true, nil
+		},
+		new(func(string) bool),
+	)
+}
+
+func addRequestHeaderFunc(r *http.Request) expr.Option {
+	return expr.Function(
+		"add_header",
+		func(params ...any) (any, error) {
+			name := params[0].(string)
+			rawValue := params[1]
+
+			var value string
+			switch v := rawValue.(type) {
+			case []string:
+				value = strings.Join(v, ",")
+			case time.Time:
+				value = strconv.FormatInt(v.UTC().Unix(), 10)
+			case time.Duration:
+				value = strconv.FormatInt(int64(v.Seconds()), 10)
+			default:
+				value = fmt.Sprintf("%v", rawValue)
+			}
+
+			r.Header.Add(name, value)
+
+			return true, nil
+		},
+		new(func(string, string) bool),
+	)
+}
+
+func setRequestHeaderFunc(r *http.Request) expr.Option {
+	return expr.Function(
+		"set_header",
+		func(params ...any) (any, error) {
+			name := params[0].(string)
+			rawValue := params[1]
+
+			var value string
+			switch v := rawValue.(type) {
+			case []string:
+				value = strings.Join(v, ",")
+			case time.Time:
+				value = strconv.FormatInt(v.UTC().Unix(), 10)
+			case time.Duration:
+				value = strconv.FormatInt(int64(v.Seconds()), 10)
+			default:
+				value = fmt.Sprintf("%v", rawValue)
+			}
+
+			r.Header.Set(name, value)
+
+			return true, nil
+		},
+		new(func(string, string) bool),
+	)
+}
+
+func delRequestHeadersFunc(r *http.Request) expr.Option {
+	return expr.Function(
+		"del_headers",
+		func(params ...any) (any, error) {
+			pattern := params[0].(string)
+			deleted := false
+
+			for key := range r.Header {
+				if !wildcard.Match(key, pattern) {
+					continue
+				}
+
+				r.Header.Del(key)
+				deleted = true
+			}
+
+			return deleted, nil
+		},
+		new(func(string) bool),
+	)
+}

internal/rule/http/response.go

@@ -0,0 +1,88 @@
+package http
+
+import (
+	"fmt"
+	"net/http"
+	"strconv"
+	"strings"
+	"time"
+
+	"forge.cadoles.com/Cadoles/go-proxy/wildcard"
+	"github.com/expr-lang/expr"
+)
+
+func addResponseHeaderFunc(r *http.Response) expr.Option {
+	return expr.Function(
+		"add_header",
+		func(params ...any) (any, error) {
+			name := params[0].(string)
+			rawValue := params[1]
+
+			var value string
+			switch v := rawValue.(type) {
+			case []string:
+				value = strings.Join(v, ",")
+			case time.Time:
+				value = strconv.FormatInt(v.UTC().Unix(), 10)
+			case time.Duration:
+				value = strconv.FormatInt(int64(v.Seconds()), 10)
+			default:
+				value = fmt.Sprintf("%v", rawValue)
+			}
+
+			r.Header.Add(name, value)
+
+			return true, nil
+		},
+		new(func(string, string) bool),
+	)
+}
+
+func setResponseHeaderFunc(r *http.Response) expr.Option {
+	return expr.Function(
+		"set_header",
+		func(params ...any) (any, error) {
+			name := params[0].(string)
+			rawValue := params[1]
+
+			var value string
+			switch v := rawValue.(type) {
+			case []string:
+				value = strings.Join(v, ",")
+			case time.Time:
+				value = strconv.FormatInt(v.UTC().Unix(), 10)
+			case time.Duration:
+				value = strconv.FormatInt(int64(v.Seconds()), 10)
+			default:
+				value = fmt.Sprintf("%v", rawValue)
+			}
+
+			r.Header.Set(name, value)
+
+			return true, nil
+		},
+		new(func(string, string) bool),
+	)
+}
+
+func delResponseHeadersFunc(r *http.Response) expr.Option {
+	return expr.Function(
+		"del_headers",
+		func(params ...any) (any, error) {
+			pattern := params[0].(string)
+			deleted := false
+
+			for key := range r.Header {
+				if !wildcard.Match(key, pattern) {
+					continue
+				}
+
+				r.Header.Del(key)
+				deleted = true
+			}
+
+			return deleted, nil
+		},
+		new(func(string) bool),
+	)
+}

internal/rule/options.go

@@ -0,0 +1,35 @@
+package rule
+
+import "github.com/expr-lang/expr"
+
+type Options struct {
+	Rules []string
+	Expr  []expr.Option
+}
+
+type OptionFunc func(opts *Options)
+
+func NewOptions(funcs ...OptionFunc) *Options {
+	opts := &Options{
+		Expr:  make([]expr.Option, 0),
+		Rules: make([]string, 0),
+	}
+
+	for _, fn := range funcs {
+		fn(opts)
+	}
+
+	return opts
+}
+
+func WithRules(rules ...string) OptionFunc {
+	return func(opts *Options) {
+		opts.Rules = rules
+	}
+}
+
+func WithExpr(options ...expr.Option) OptionFunc {
+	return func(opts *Options) {
+		opts.Expr = options
+	}
+}

internal/setup/proxy_repository.go

@@ -17,9 +17,9 @@ func NewRedisClient(ctx context.Context, conf config.RedisConfig) redis.Universa
 }
 
 func NewProxyRepository(ctx context.Context, client redis.UniversalClient) (store.ProxyRepository, error) {
-	return redisStore.NewProxyRepository(client), nil
+	return redisStore.NewProxyRepository(client, redisStore.DefaultTxMaxAttempts, redisStore.DefaultTxBaseDelay), nil
 }
 
 func NewLayerRepository(ctx context.Context, client redis.UniversalClient) (store.LayerRepository, error) {
-	return redisStore.NewLayerRepository(client), nil
+	return redisStore.NewLayerRepository(client, redisStore.DefaultTxMaxAttempts, redisStore.DefaultTxBaseDelay), nil
 }

internal/setup/rewriter_layer.go

@@ -0,0 +1,15 @@
+package setup
+
+import (
+	"forge.cadoles.com/cadoles/bouncer/internal/config"
+	"forge.cadoles.com/cadoles/bouncer/internal/proxy/director"
+	"forge.cadoles.com/cadoles/bouncer/internal/proxy/director/layer/rewriter"
+)
+
+func init() {
+	RegisterLayer(rewriter.LayerType, setupRewriterLayer, rewriter.RawLayerOptionsSchema)
+}
+
+func setupRewriterLayer(conf *config.Config) (director.Layer, error) {
+	return rewriter.New(), nil
+}

internal/store/layer.go

@@ -11,9 +11,10 @@ type (
 )
 
 type LayerHeader struct {
-	Proxy ProxyName `json:"proxy"`
+	Proxy    ProxyName `json:"proxy"`
-	Name  LayerName `json:"name"`
+	Name     LayerName `json:"name"`
-	Type  LayerType `json:"type"`
+	Revision int       `json:"revision"`
+	Type     LayerType `json:"type"`
 
 	Weight  int  `json:"weight"`
 	Enabled bool `json:"enabled"`

internal/store/proxy.go

@@ -7,10 +7,10 @@ import (
 type ProxyName Name
 
 type ProxyHeader struct {
-	Name ProxyName `json:"name"`
+	Name     ProxyName `json:"name"`
-
+	Revision int       `json:"revision"`
-	Weight  int  `json:"weight"`
+	Weight   int       `json:"weight"`
-	Enabled bool `json:"enabled"`
+	Enabled  bool      `json:"enabled"`
 }
 
 type Proxy struct {

internal/store/redis/helper.go

@@ -3,10 +3,18 @@ package redis
 import (
 	"context"
 	"encoding/json"
+	"math/rand"
 	"strings"
+	"time"
 
 	"github.com/pkg/errors"
 	"github.com/redis/go-redis/v9"
+	"gitlab.com/wpetit/goweb/logger"
+)
+
+var (
+	DefaultTxMaxAttempts = 20
+	DefaultTxBaseDelay   = 100 * time.Millisecond
 )
 
 type jsonWrapper[T any] struct {
@@ -65,6 +73,33 @@ func key(parts ...string) string {
 	return strings.Join(parts, ":")
 }
 
+func WithRetry(ctx context.Context, client redis.UniversalClient, key string, fn func(ctx context.Context, tx *redis.Tx) error, maxAttempts int, baseDelay time.Duration) error {
+	var err error
+
+	delay := baseDelay
+
+	for attempt := 0; attempt < maxAttempts; attempt++ {
+		if err = WithTx(ctx, client, key, fn); err != nil {
+			err = errors.WithStack(err)
+			logger.Debug(ctx, "redis transaction failed", logger.E(err))
+
+			if errors.Is(err, redis.TxFailedErr) {
+				logger.Debug(ctx, "retrying redis transaction", logger.F("attempts", attempt), logger.F("delay", delay))
+				time.Sleep(delay)
+				delay = delay*2 + time.Duration(rand.Int63n(int64(baseDelay)))
+
+				continue
+			}
+
+			return err
+		}
+
+		return nil
+	}
+
+	return errors.WithStack(redis.TxFailedErr)
+}
+
 func WithTx(ctx context.Context, client redis.UniversalClient, key string, fn func(ctx context.Context, tx *redis.Tx) error) error {
 	txf := func(tx *redis.Tx) error {
 		if err := fn(ctx, tx); err != nil {

internal/store/redis/layer_item.go

@@ -8,9 +8,10 @@ import (
 )
 
 type layerHeaderItem struct {
-	Proxy string `redis:"proxy"`
+	Proxy    string `redis:"proxy"`
-	Name  string `redis:"name"`
+	Name     string `redis:"name"`
-	Type  string `redis:"type"`
+	Revision int    `redis:"revision"`
+	Type     string `redis:"type"`
 
 	Weight  int  `redis:"weight"`
 	Enabled bool `redis:"enabled"`
@@ -18,11 +19,12 @@ type layerHeaderItem struct {
 
 func (i *layerHeaderItem) ToLayerHeader() (*store.LayerHeader, error) {
 	layerHeader := &store.LayerHeader{
-		Proxy:   store.ProxyName(i.Proxy),
+		Proxy:    store.ProxyName(i.Proxy),
-		Name:    store.LayerName(i.Name),
+		Name:     store.LayerName(i.Name),
-		Type:    store.LayerType(i.Type),
+		Revision: i.Revision,
-		Weight:  i.Weight,
+		Type:     store.LayerType(i.Type),
-		Enabled: i.Enabled,
+		Weight:   i.Weight,
+		Enabled:  i.Enabled,
 	}
 
 	return layerHeader, nil

internal/store/redis/layer_repository.go

@@ -14,7 +14,9 @@ const (
 )
 
 type LayerRepository struct {
-	client redis.UniversalClient
+	client           redis.UniversalClient
+	txMaxAttempts    int
+	txRetryBaseDelay time.Duration
 }
 
 // CreateLayer implements store.LayerRepository
@@ -24,16 +26,17 @@ func (r *LayerRepository) CreateLayer(ctx context.Context, proxyName store.Proxy
 
 	layerItem := &layerItem{
 		layerHeaderItem: layerHeaderItem{
-			Proxy:   string(proxyName),
+			Proxy:    string(proxyName),
-			Name:    string(layerName),
+			Name:     string(layerName),
-			Type:    string(layerType),
+			Type:     string(layerType),
-			Weight:  0,
+			Weight:   0,
-			Enabled: false,
+			Revision: 0,
+			Enabled:  false,
 		},
 
 		CreatedAt: wrap(now),
 		UpdatedAt: wrap(now),
-		Options:   wrap(store.LayerOptions{}),
+		Options:   wrap(options),
 	}
 
 	txf := func(tx *redis.Tx) error {
@@ -57,6 +60,11 @@ func (r *LayerRepository) CreateLayer(ctx context.Context, proxyName store.Proxy
 			return errors.WithStack(err)
 		}
 
+		layerItem, err = r.txGetLayerItem(ctx, tx, proxyName, layerName)
+		if err != nil {
+			return errors.WithStack(err)
+		}
+
 		return nil
 	}
 
@@ -67,16 +75,16 @@ func (r *LayerRepository) CreateLayer(ctx context.Context, proxyName store.Proxy
 
 	return &store.Layer{
 		LayerHeader: store.LayerHeader{
-			Name:    layerName,
+			Name:    store.LayerName(layerItem.Name),
-			Proxy:   proxyName,
+			Proxy:   store.ProxyName(layerItem.Proxy),
-			Type:    layerType,
+			Type:    store.LayerType(layerItem.Type),
-			Weight:  0,
+			Weight:  layerItem.Weight,
-			Enabled: false,
+			Enabled: layerItem.Enabled,
 		},
 
-		CreatedAt: now,
+		CreatedAt: layerItem.CreatedAt.Value(),
-		UpdatedAt: now,
+		UpdatedAt: layerItem.UpdatedAt.Value(),
-		Options:   store.LayerOptions{},
+		Options:   layerItem.Options.Value(),
 	}, nil
 }
 
@@ -96,7 +104,7 @@ func (r *LayerRepository) GetLayer(ctx context.Context, proxyName store.ProxyNam
 	key := layerKey(proxyName, layerName)
 	var layerItem *layerItem
 
-	err := WithTx(ctx, r.client, key, func(ctx context.Context, tx *redis.Tx) error {
+	err := WithRetry(ctx, r.client, key, func(ctx context.Context, tx *redis.Tx) error {
 		pItem, err := r.txGetLayerItem(ctx, tx, proxyName, layerName)
 		if err != nil {
 			return errors.WithStack(err)
@@ -105,7 +113,7 @@ func (r *LayerRepository) GetLayer(ctx context.Context, proxyName store.ProxyNam
 		layerItem = pItem
 
 		return nil
-	})
+	}, r.txMaxAttempts, r.txRetryBaseDelay)
 	if err != nil {
 		return nil, errors.WithStack(err)
 	}
@@ -197,7 +205,7 @@ func (r *LayerRepository) UpdateLayer(ctx context.Context, proxyName store.Proxy
 	key := layerKey(proxyName, layerName)
 	var layerItem layerItem
 
-	err := WithTx(ctx, r.client, key, func(ctx context.Context, tx *redis.Tx) error {
+	err := WithRetry(ctx, r.client, key, func(ctx context.Context, tx *redis.Tx) error {
 		item, err := r.txGetLayerItem(ctx, tx, proxyName, layerName)
 		if err != nil {
 			return errors.WithStack(err)
@@ -216,6 +224,7 @@ func (r *LayerRepository) UpdateLayer(ctx context.Context, proxyName store.Proxy
 		}
 
 		item.UpdatedAt = wrap(time.Now().UTC())
+		item.Revision = item.Revision + 1
 
 		_, err = tx.TxPipelined(ctx, func(p redis.Pipeliner) error {
 			p.HMSet(ctx, key, item.layerHeaderItem)
@@ -230,7 +239,7 @@ func (r *LayerRepository) UpdateLayer(ctx context.Context, proxyName store.Proxy
 		layerItem = *item
 
 		return nil
-	})
+	}, r.txMaxAttempts, r.txRetryBaseDelay)
 	if err != nil {
 		return nil, errors.WithStack(err)
 	}
@@ -243,9 +252,11 @@ func (r *LayerRepository) UpdateLayer(ctx context.Context, proxyName store.Proxy
 	return layer, nil
 }
 
-func NewLayerRepository(client redis.UniversalClient) *LayerRepository {
+func NewLayerRepository(client redis.UniversalClient, txMaxAttempts int, txRetryBaseDelay time.Duration) *LayerRepository {
 	return &LayerRepository{
-		client: client,
+		client:           client,
+		txMaxAttempts:    txMaxAttempts,
+		txRetryBaseDelay: txRetryBaseDelay,
 	}
 }
 

internal/store/redis/layer_repository_test.go

@@ -7,6 +7,6 @@ import (
 )
 
 func TestLayerRepository(t *testing.T) {
-	repository := NewLayerRepository(client)
+	repository := NewLayerRepository(client, DefaultTxMaxAttempts, DefaultTxBaseDelay)
 	testsuite.TestLayerRepository(t, repository)
 }

internal/store/redis/proxy_item.go

@@ -8,7 +8,8 @@ import (
 )
 
 type proxyHeaderItem struct {
-	Name string `redis:"name"`
+	Name     string `redis:"name"`
+	Revision int    `redis:"revision"`
 
 	Weight  int  `redis:"weight"`
 	Enabled bool `redis:"enabled"`
@@ -19,9 +20,10 @@ type proxyHeaderItem struct {
 
 func (i *proxyHeaderItem) ToProxyHeader() (*store.ProxyHeader, error) {
 	proxyHeader := &store.ProxyHeader{
-		Name:    store.ProxyName(i.Name),
+		Name:     store.ProxyName(i.Name),
-		Weight:  i.Weight,
+		Revision: i.Revision,
-		Enabled: i.Enabled,
+		Weight:   i.Weight,
+		Enabled:  i.Enabled,
 	}
 
 	return proxyHeader, nil

internal/store/redis/proxy_repository.go

@@ -14,7 +14,9 @@ const (
 )
 
 type ProxyRepository struct {
-	client redis.UniversalClient
+	client           redis.UniversalClient
+	txMaxAttempts    int
+	txRetryBaseDelay time.Duration
 }
 
 // GetProxy implements store.ProxyRepository
@@ -22,7 +24,7 @@ func (r *ProxyRepository) GetProxy(ctx context.Context, name store.ProxyName) (*
 	key := proxyKey(name)
 	var proxyItem *proxyItem
 
-	err := WithTx(ctx, r.client, key, func(ctx context.Context, tx *redis.Tx) error {
+	err := WithRetry(ctx, r.client, key, func(ctx context.Context, tx *redis.Tx) error {
 		pItem, err := r.txGetProxyItem(ctx, tx, name)
 		if err != nil {
 			return errors.WithStack(err)
@@ -31,7 +33,7 @@ func (r *ProxyRepository) GetProxy(ctx context.Context, name store.ProxyName) (*
 		proxyItem = pItem
 
 		return nil
-	})
+	}, r.txMaxAttempts, r.txRetryBaseDelay)
 	if err != nil {
 		return nil, errors.WithStack(err)
 	}
@@ -89,6 +91,7 @@ func (r *ProxyRepository) CreateProxy(ctx context.Context, name store.ProxyName,
 				CreatedAt: wrap(now),
 				UpdatedAt: wrap(now),
 				Weight:    0,
+				Revision:  0,
 				Enabled:   false,
 			},
 			To:   to,
@@ -191,7 +194,7 @@ func (r *ProxyRepository) UpdateProxy(ctx context.Context, name store.ProxyName,
 	key := proxyKey(name)
 	var proxyItem proxyItem
 
-	err := WithTx(ctx, r.client, key, func(ctx context.Context, tx *redis.Tx) error {
+	err := WithRetry(ctx, r.client, key, func(ctx context.Context, tx *redis.Tx) error {
 		item, err := r.txGetProxyItem(ctx, tx, name)
 		if err != nil {
 			return errors.WithStack(err)
@@ -214,6 +217,7 @@ func (r *ProxyRepository) UpdateProxy(ctx context.Context, name store.ProxyName,
 		}
 
 		item.UpdatedAt = wrap(time.Now().UTC())
+		item.Revision = item.Revision + 1
 
 		_, err = tx.TxPipelined(ctx, func(p redis.Pipeliner) error {
 			p.HMSet(ctx, key, item.proxyHeaderItem)
@@ -228,7 +232,7 @@ func (r *ProxyRepository) UpdateProxy(ctx context.Context, name store.ProxyName,
 		proxyItem = *item
 
 		return nil
-	})
+	}, r.txMaxAttempts, r.txRetryBaseDelay)
 	if err != nil {
 		return nil, errors.WithStack(err)
 	}
@@ -241,9 +245,11 @@ func (r *ProxyRepository) UpdateProxy(ctx context.Context, name store.ProxyName,
 	return proxy, nil
 }
 
-func NewProxyRepository(client redis.UniversalClient) *ProxyRepository {
+func NewProxyRepository(client redis.UniversalClient, txMaxAttempts int, txRetryBaseDelay time.Duration) *ProxyRepository {
 	return &ProxyRepository{
-		client: client,
+		client:           client,
+		txMaxAttempts:    20,
+		txRetryBaseDelay: txRetryBaseDelay,
 	}
 }
 

internal/store/redis/proxy_repository_test.go

@@ -7,6 +7,6 @@ import (
 )
 
 func TestProxyRepository(t *testing.T) {
-	repository := NewProxyRepository(client)
+	repository := NewProxyRepository(client, DefaultTxMaxAttempts, DefaultTxBaseDelay)
 	testsuite.TestProxyRepository(t, repository)
 }

internal/store/testsuite/layer_repository.go

@@ -3,6 +3,7 @@ package testsuite
 import (
 	"context"
 	"reflect"
+	"sync"
 	"testing"
 
 	"forge.cadoles.com/cadoles/bouncer/internal/store"
@@ -49,6 +50,10 @@ var layerRepositoryTestCases = []layerRepositoryTestCase{
 				return errors.Errorf("layer.UpdatedAt should not be zero value")
 			}
 
+			if layer.Revision != 0 {
+				return errors.Errorf("layer.Revision should be zero")
+			}
+
 			return nil
 		},
 	},
@@ -230,6 +235,86 @@ var layerRepositoryTestCases = []layerRepositoryTestCase{
 				return errors.New("could not find created layer in query results")
 			}
 
+			return nil
+		},
+	},
+	{
+		Name: "Create then update layer",
+		Do: func(repo store.LayerRepository) error {
+			ctx := context.Background()
+
+			var layerName store.LayerName = "create_then_update_layer"
+			var proxyName store.ProxyName = store.ProxyName(string(layerName) + "_proxy")
+			var layerType store.LayerType = "dummy"
+			var layerOptions store.LayerOptions = store.LayerOptions{}
+
+			createdLayer, err := repo.CreateLayer(ctx, proxyName, layerName, layerType, layerOptions)
+			if err != nil {
+				return errors.WithStack(err)
+			}
+
+			if e, g := 0, createdLayer.Revision; e != g {
+				return errors.Errorf("createdLayer.Revision: expected '%v', got '%v'", e, g)
+			}
+
+			updatedLayer, err := repo.UpdateLayer(ctx, proxyName, layerName)
+			if err != nil {
+				return errors.Wrap(err, "err should be nil")
+			}
+
+			if e, g := 1, updatedLayer.Revision; e != g {
+				return errors.Errorf("updatedLayer.Revision: expected '%v', got '%v'", e, g)
+			}
+
+			return nil
+		},
+	},
+	{
+		Name: "Update layer concurrently",
+		Do: func(repo store.LayerRepository) error {
+			ctx := context.Background()
+
+			var layerName store.LayerName = "update_layer_concurrently"
+			var proxyName store.ProxyName = store.ProxyName(string(layerName) + "_proxy")
+			var layerType store.LayerType = "dummy"
+			var layerOptions store.LayerOptions = store.LayerOptions{}
+
+			createdLayer, err := repo.CreateLayer(ctx, proxyName, layerName, layerType, layerOptions)
+			if err != nil {
+				return errors.WithStack(err)
+			}
+
+			if createdLayer.Revision != 0 {
+				return errors.Errorf("createdLayer.Revision should be zero")
+			}
+
+			var wg sync.WaitGroup
+
+			total := 100
+
+			wg.Add(total)
+
+			for i := 0; i < total; i++ {
+				go func(i int) {
+					defer wg.Done()
+
+					if _, err := repo.UpdateLayer(ctx, createdLayer.Proxy, createdLayer.Name); err != nil {
+						panic(errors.Wrap(err, "err should be nil"))
+					}
+				}(i)
+			}
+
+			wg.Wait()
+
+			layer, err := repo.GetLayer(ctx, createdLayer.Proxy, createdLayer.Name)
+			if err != nil {
+				return errors.Wrap(err, "err should be nil")
+			}
+
+			if e, g := total, layer.Revision; e != g {
+				return errors.Errorf("layer.Revision: expected '%v', got '%v'", e, g)
+			}
+
 			return nil
 		},
 	},

internal/store/testsuite/proxy_repository.go

@@ -3,6 +3,7 @@ package testsuite
 import (
 	"context"
 	"reflect"
+	"sync"
 	"testing"
 
 	"forge.cadoles.com/cadoles/bouncer/internal/store"
@@ -51,6 +52,10 @@ var proxyRepositoryTestCases = []proxyRepositoryTestCase{
 				return errors.Errorf("proxy.UpdatedAt should not be zero value")
 			}
 
+			if proxy.Revision != 0 {
+				return errors.Errorf("proxy.Revision should be zero")
+			}
+
 			return nil
 		},
 	},
@@ -99,6 +104,10 @@ var proxyRepositoryTestCases = []proxyRepositoryTestCase{
 				return errors.Errorf("foundProxy.UpdatedAt: expected '%v', got '%v'", createdProxy.UpdatedAt, foundProxy.UpdatedAt)
 			}
 
+			if foundProxy.Revision != 0 {
+				return errors.Errorf("foundProxy.Revision should be zero")
+			}
+
 			return nil
 		},
 	},
@@ -194,6 +203,84 @@ var proxyRepositoryTestCases = []proxyRepositoryTestCase{
 				return errors.Errorf("err: expected store.ErrAlreadyExists, got '%+v'", err)
 			}
 
+			return nil
+		},
+	},
+	{
+		Name: "Create then update proxy",
+		Do: func(repo store.ProxyRepository) error {
+			ctx := context.Background()
+
+			to := "http://example.com"
+
+			var name store.ProxyName = "create_then_update_proxy"
+
+			createdProxy, err := repo.CreateProxy(ctx, name, to, "127.0.0.1:*", "localhost:*")
+			if err != nil {
+				return errors.Wrap(err, "err should be nil")
+			}
+
+			if createdProxy.Revision != 0 {
+				return errors.Errorf("createdProxy.Revision should be zero")
+			}
+
+			updatedProxy, err := repo.UpdateProxy(ctx, name)
+			if err != nil {
+				return errors.Wrap(err, "err should be nil")
+			}
+
+			if e, g := 1, updatedProxy.Revision; e != g {
+				return errors.Errorf("updatedProxy.Revision: expected '%v', got '%v'", e, g)
+			}
+
+			return nil
+		},
+	},
+	{
+		Name: "Update proxy concurrently",
+		Do: func(repo store.ProxyRepository) error {
+			ctx := context.Background()
+
+			to := "http://example.com"
+
+			var name store.ProxyName = "update_proxy_concurrently"
+
+			createdProxy, err := repo.CreateProxy(ctx, name, to, "127.0.0.1:*", "localhost:*")
+			if err != nil {
+				return errors.Wrap(err, "err should be nil")
+			}
+
+			if createdProxy.Revision != 0 {
+				return errors.Errorf("createdProxy.Revision should be zero")
+			}
+
+			var wg sync.WaitGroup
+
+			total := 100
+
+			wg.Add(total)
+
+			for i := 0; i < total; i++ {
+				go func(i int) {
+					defer wg.Done()
+
+					if _, err := repo.UpdateProxy(ctx, name); err != nil {
+						panic(errors.Wrap(err, "err should be nil"))
+					}
+				}(i)
+			}
+
+			wg.Wait()
+
+			proxy, err := repo.GetProxy(ctx, name)
+			if err != nil {
+				return errors.Wrap(err, "err should be nil")
+			}
+
+			if e, g := total, proxy.Revision; e != g {
+				return errors.Errorf("proxy.Revision: expected '%v', got '%v'", e, g)
+			}
+
 			return nil
 		},
 	},

misc/bootstrap.d/dummy.yml

@@ -19,7 +19,8 @@ layers:
   #       clientId: my-client-id
   #       clientSecret: my-client-id
   #       issuerURL: https://forge.cadoles.com/
-  #       postLogoutRedirectURL: http://localhost:8080
+  #       postLogoutRedirectURLs:
+  #         - http://localhost:8080
   #       scopes: ["profile", "openid", "email"]
   #       authParams:
   #         acr_values: "eidas2"

misc/images/bouncer/Dockerfile

@@ -1,49 +0,0 @@
-FROM golang:1.20 AS BUILD
-
-RUN apt-get update \
-    && apt-get install -y make
-
-ARG YQ_VERSION=4.34.1
-
-RUN mkdir -p /usr/local/bin \
-    && wget -O /usr/local/bin/yq https://github.com/mikefarah/yq/releases/download/v${YQ_VERSION}/yq_linux_amd64 \
-    && chmod +x /usr/local/bin/yq
-
-COPY . /src
-
-WORKDIR /src
-
-RUN make GORELEASER_ARGS='build --rm-dist --single-target --snapshot' goreleaser
-
-# Patch config
-RUN /src/dist/bouncer_linux_amd64_v1/bouncer -c '' config dump > /src/dist/bouncer_linux_amd64_v1/config.yml \
-    && yq -i '.layers.queue.templateDir = "/usr/share/bouncer/layers/queue/templates"' /src/dist/bouncer_linux_amd64_v1/config.yml \
-    && yq -i '.admin.auth.privateKey = "/etc/bouncer/admin-key.json"' /src/dist/bouncer_linux_amd64_v1/config.yml \
-    && yq -i '.redis.adresses = ["redis:6379"]' /src/dist/bouncer_linux_amd64_v1/config.yml
-
-FROM alpine:3.18 AS RUNTIME
-
-ARG DUMB_INIT_VERSION=1.2.5
-
-RUN apk add --no-cache ca-certificates
-
-RUN mkdir -p /usr/local/bin \
-    && wget -O /usr/local/bin/dumb-init https://github.com/Yelp/dumb-init/releases/download/v${DUMB_INIT_VERSION}/dumb-init_${DUMB_INIT_VERSION}_x86_64 \
-    && chmod +x /usr/local/bin/dumb-init
-
-ENTRYPOINT ["/usr/local/bin/dumb-init", "--"]
-
-RUN mkdir -p /usr/local/bin /usr/share/bouncer/bin /etc/bouncer
-
-COPY --from=BUILD /src/dist/bouncer_linux_amd64_v1/bouncer /usr/share/bouncer/bin/bouncer
-COPY --from=BUILD /src/layers /usr/share/bouncer/layers
-COPY --from=BUILD /src/dist/bouncer_linux_amd64_v1/config.yml /etc/bouncer/config.yml
-
-RUN ln -s /usr/share/bouncer/bin/bouncer /usr/local/bin/bouncer
-
-EXPOSE 8080
-EXPOSE 8081
-
-ENV BOUNCER_CONFIG=/etc/bouncer/config.yml
-
-CMD ["bouncer"]

misc/packaging/common/config.yml

@@ -49,6 +49,19 @@ admin:
     # Mettre à null pour désactiver l'authentification
     basicAuth: null
 
+  # Profiling
+  profiling:
+    # Activer ou désactiver les endpoints de profiling
+    enabled: true
+    # Route de publication des endpoints de profiling
+    endpoint: /.bouncer/profiling
+    # Authentification "basic auth" sur les endpoints
+    # de profiling
+    # Mettre à null pour désactiver l'authentification
+    basicAuth:
+      credentials:
+        prof: iling
+
   # Configuration de l'intégration Sentry
   # Voir https://pkg.go.dev/github.com/getsentry/sentry-go?utm_source=godoc#ClientOptions
   sentry:
@@ -59,7 +72,7 @@ admin:
     sampleRate: 1
     enableTracing: true
     tracesSampleRate: 0.2
-    profilesSampleRate: 1
+    profilesSampleRate: 0.2
     ignoreErrors: []
     sendDefaultPII: false
     serverName: ""
@@ -70,6 +83,12 @@ admin:
 
 # Configuration du service "proxy"
 proxy:
+  # Activer/désactiver le mode debug (affichage ou non des messages d'erreur)
+  debug: false
+  # Configuration des templates utilisés par le proxy
+  templates:
+    # Répertoire contenant les templates
+    dir: /etc/bouncer/templates
   http:
     # Hôte d'écoute du service,
     # 0.0.0.0 pour écouter sur toutes les interfaces
@@ -93,6 +112,19 @@ proxy:
       credentials:
         prom: etheus
 
+  # Profiling
+  profiling:
+    # Activer ou désactiver les endpoints de profiling
+    enabled: true
+    # Route de publication des endpoints de profiling
+    endpoint: /.bouncer/profiling
+    # Authentification "basic auth" sur les endpoints
+    # de profiling
+    # Mettre à null pour désactiver l'authentification
+    basicAuth:
+      credentials:
+        prof: iling
+
   # Configuration de la mise en cache
   # locale des données proxy/layers
   cache:

templates/error.gohtml

@@ -0,0 +1,96 @@
+{{ define "default" }}
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width,initial-scale=1" />
+    {{ $title := print .StatusCode " - " .Status }}
+    <title>{{ $title }}</title>
+    <style>
+      html {
+        box-sizing: border-box;
+        font-size: 16px;
+      }
+
+      *,
+      *:before,
+      *:after {
+        box-sizing: inherit;
+      }
+
+      body,
+      h1,
+      h2,
+      h3,
+      h4,
+      h5,
+      h6,
+      p,
+      ol,
+      ul {
+        margin: 0;
+        padding: 0;
+        font-weight: normal;
+      }
+
+      html,
+      body {
+        width: 100%;
+        height: 100%;
+        font-family: Arial, Helvetica, sans-serif;
+        background-color: #ffe4e4;
+      }
+
+      #container {
+        display: flex;
+        align-items: center;
+        justify-content: center;
+        height: 100%;
+        flex-direction: column;
+      }
+
+      #card {
+        padding: 1.5em 1em;
+        border: 1px solid #d90202;
+        background-color: #feb0b0;
+        border-radius: 5px;
+        box-shadow: 2px 2px #cccccc1c;
+        color: #810000 !important;
+      }
+
+      .title {
+        margin-bottom: 1.2em;
+      }
+
+      p {
+        margin-bottom: 0.5em;
+      }
+
+      code,
+      pre {
+        font-family: monospace;
+      }
+
+      .footer {
+        font-size: 0.7em;
+        margin-top: 2em;
+        text-align: right;
+      }
+    </style>
+  </head>
+  <body>
+    <div id="container">
+      <div id="card">
+        <h2 class="title">{{ $title }}</h2>
+        {{ if .Debug }}
+        <pre>{{ .Err }}</pre>
+        {{ end }}
+        <p class="footer">
+          Propulsé par
+          <a href="https://forge.cadoles.com/Cadoles/bouncer">Bouncer</a>.
+        </p>
+      </div>
+    </div>
+  </body>
+</html>
+{{ end }}