feat(layer,queue): display templatized page for queued users

.goreleaser.yaml

@@ -60,6 +60,9 @@ nfpms:
       - src: misc/packaging/common/config.yml
         dst: /etc/bouncer/config.yml
         type: config
+      - src: layers
+        dst: /etc/bouncer/layers
+        type: config
   - id: bouncer-admin
     meta: true
     package_name: bouncer-admin

go.mod

@@ -4,17 +4,21 @@ go 1.20
 
 require (
 	forge.cadoles.com/Cadoles/go-proxy v0.0.0-20230512083245-e2dc3e1a0333
+	github.com/Masterminds/sprig/v3 v3.2.3
 	github.com/btcsuite/btcd/btcutil v1.1.3
-	github.com/davecgh/go-spew v1.1.1
 	github.com/go-chi/chi/v5 v5.0.8
 	github.com/jedib0t/go-pretty/v6 v6.4.6
+	github.com/mitchellh/mapstructure v1.4.1
 	github.com/ory/dockertest/v3 v3.10.0
+	github.com/qri-io/jsonschema v0.2.1
 	github.com/redis/go-redis/v9 v9.0.4
 )
 
 require (
 	cloud.google.com/go v0.99.0 // indirect
 	github.com/Azure/go-ansiterm v0.0.0-20210617225240-d185dfc1b5a1 // indirect
+	github.com/Masterminds/goutils v1.1.1 // indirect
+	github.com/Masterminds/semver/v3 v3.2.0 // indirect
 	github.com/Microsoft/go-winio v0.6.0 // indirect
 	github.com/Nvveen/Gotty v0.0.0-20120604004816-cd527374f1e5 // indirect
 	github.com/cenkalti/backoff/v4 v4.1.3 // indirect
@@ -28,19 +32,22 @@ require (
 	github.com/gogo/protobuf v1.3.2 // indirect
 	github.com/google/go-cmp v0.5.9 // indirect
 	github.com/google/shlex v0.0.0-20191202100458-e7afc7fbc510 // indirect
+	github.com/huandu/xstrings v1.3.3 // indirect
 	github.com/imdario/mergo v0.3.12 // indirect
 	github.com/kr/pretty v0.3.0 // indirect
 	github.com/mattn/go-runewidth v0.0.13 // indirect
-	github.com/mitchellh/mapstructure v1.4.1 // indirect
+	github.com/mitchellh/copystructure v1.0.0 // indirect
+	github.com/mitchellh/reflectwalk v1.0.0 // indirect
 	github.com/moby/term v0.0.0-20210619224110-3f7ff695adc6 // indirect
 	github.com/opencontainers/go-digest v1.0.0 // indirect
 	github.com/opencontainers/image-spec v1.0.2 // indirect
 	github.com/opencontainers/runc v1.1.5 // indirect
 	github.com/qri-io/jsonpointer v0.1.1 // indirect
-	github.com/qri-io/jsonschema v0.2.1 // indirect
 	github.com/rivo/uniseg v0.2.0 // indirect
 	github.com/rogpeppe/go-internal v1.10.0 // indirect
+	github.com/shopspring/decimal v1.2.0 // indirect
 	github.com/sirupsen/logrus v1.8.1 // indirect
+	github.com/spf13/cast v1.3.1 // indirect
 	github.com/xeipuuv/gojsonpointer v0.0.0-20180127040702-4e3ac2762d5f // indirect
 	github.com/xeipuuv/gojsonreference v0.0.0-20180127040603-bd5ef7bd5415 // indirect
 	github.com/xeipuuv/gojsonschema v1.2.0 // indirect

go.sum

@@ -57,6 +57,12 @@ github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
 github.com/GeertJohan/go.incremental v1.0.0/go.mod h1:6fAjUhbVuX1KcMD3c8TEgVUqmo4seqhv0i0kdATSkM0=
 github.com/GeertJohan/go.rice v1.0.0/go.mod h1:eH6gbSOAUv07dQuZVnBmoDP8mgsM1rtixis4Tib9if0=
+github.com/Masterminds/goutils v1.1.1 h1:5nUrii3FMTL5diU80unEVvNevw1nH4+ZV4DSLVJLSYI=
+github.com/Masterminds/goutils v1.1.1/go.mod h1:8cTjp+g8YejhMuvIA5y2vz3BpJxksy863GQaJW2MFNU=
+github.com/Masterminds/semver/v3 v3.2.0 h1:3MEsd0SM6jqZojhjLWWeBY+Kcjy9i6MQAeY7YgDP83g=
+github.com/Masterminds/semver/v3 v3.2.0/go.mod h1:qvl/7zhW3nngYb5+80sSMF+FG2BjYrf8m9wsX0PNOMQ=
+github.com/Masterminds/sprig/v3 v3.2.3 h1:eL2fZNezLomi0uOLqjQoN6BfsDD+fyLtgbJMAj9n6YA=
+github.com/Masterminds/sprig/v3 v3.2.3/go.mod h1:rXcFaZ2zZbLRJv/xSysmlgIM1u11eBaRMhvYXJNkGuM=
 github.com/Microsoft/go-winio v0.6.0 h1:slsWYD/zyx7lCXoZVlvQrj0hPTM1HI4+v1sIda2yDvg=
 github.com/Microsoft/go-winio v0.6.0/go.mod h1:cTAf44im0RAYeL23bpB+fzCyDH2MJiz2BO69KH/soAE=
 github.com/Nvveen/Gotty v0.0.0-20120604004816-cd527374f1e5 h1:TngWCqHvy9oXAN6lEVMRuU21PR1EtLVZJmdB18Gu3Rw=
@@ -282,8 +288,11 @@ github.com/hashicorp/golang-lru v0.5.0/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ
 github.com/hashicorp/golang-lru v0.5.1/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
 github.com/hashicorp/hcl v1.0.0/go.mod h1:E5yfLk+7swimpb2L/Alb/PJmXilQ/rhwaUYs4T20WEQ=
 github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
+github.com/huandu/xstrings v1.3.3 h1:/Gcsuc1x8JVbJ9/rlye4xZnVAbEkGauT8lbebqcQws4=
+github.com/huandu/xstrings v1.3.3/go.mod h1:y5/lhBue+AyNmUVz9RLU9xbLR0o4KIIExikq4ovT0aE=
 github.com/ianlancetaylor/demangle v0.0.0-20181102032728-5e5cf60278f6/go.mod h1:aSSvb/t6k1mPoxDqO4vJh6VOCGPwU4O0C2/Eqndh1Sc=
 github.com/ianlancetaylor/demangle v0.0.0-20200824232613-28f6c0f3b639/go.mod h1:aSSvb/t6k1mPoxDqO4vJh6VOCGPwU4O0C2/Eqndh1Sc=
+github.com/imdario/mergo v0.3.11/go.mod h1:jmQim1M+e3UYxmgPu/WyfjB3N3VflVyUjjjwH0dnCYA=
 github.com/imdario/mergo v0.3.12 h1:b6R2BslTbIEToALKP7LxUvijTsNI9TAe80pLWN2g/HU=
 github.com/imdario/mergo v0.3.12/go.mod h1:jmQim1M+e3UYxmgPu/WyfjB3N3VflVyUjjjwH0dnCYA=
 github.com/jedib0t/go-pretty/v6 v6.4.6 h1:v6aG9h6Uby3IusSSEjHaZNXpHFhzqMmjXcPq1Rjl9Jw=
@@ -338,9 +347,13 @@ github.com/mattn/go-isatty v0.0.18 h1:DOKFKCQ7FNG2L1rbrmstDN4QVRdS89Nkh85u68Uwp9
 github.com/mattn/go-isatty v0.0.18/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
 github.com/mattn/go-runewidth v0.0.13 h1:lTGmDsbAYt5DmK6OnoV7EuIF1wEIFAcxld6ypU4OSgU=
 github.com/mattn/go-runewidth v0.0.13/go.mod h1:Jdepj2loyihRzMpdS35Xk/zdY8IAYHsh153qUoGf23w=
+github.com/mitchellh/copystructure v1.0.0 h1:Laisrj+bAB6b/yJwB5Bt3ITZhGJdqmxquMKeZ+mmkFQ=
+github.com/mitchellh/copystructure v1.0.0/go.mod h1:SNtv71yrdKgLRyLFxmLdkAbkKEFWgYaq1OVrnRcwhnw=
 github.com/mitchellh/mapstructure v1.1.2/go.mod h1:FVVH3fgwuzCH5S8UJGiWEs2h04kUh9fWfEaFds41c1Y=
 github.com/mitchellh/mapstructure v1.4.1 h1:CpVNEelQCZBooIPDn+AR3NpivK/TIKU8bDxdASFVQag=
 github.com/mitchellh/mapstructure v1.4.1/go.mod h1:bFUtVrKA4DC2yAKiSyO/QUcy7e+RRV2QTWOzhPopBRo=
+github.com/mitchellh/reflectwalk v1.0.0 h1:9D+8oIskB4VJBN5SFlmc27fSlIBZaov1Wpk/IfikLNY=
+github.com/mitchellh/reflectwalk v1.0.0/go.mod h1:mSTlrgnPZtwu0c4WaC2kGObEpuNDbx0jmZXqmk4esnw=
 github.com/moby/sys/mountinfo v0.5.0/go.mod h1:3bMD3Rg+zkqx8MRYPi7Pyb0Ie97QEBmdxbhnCLlSvSU=
 github.com/moby/term v0.0.0-20210619224110-3f7ff695adc6 h1:dcztxKSvZ4Id8iPpHERQBbIJfabdt4wUm5qy3wOL2Zc=
 github.com/moby/term v0.0.0-20210619224110-3f7ff695adc6/go.mod h1:E2VnQOmVuvZB6UYnnDB0qG5Nq/1tD9acaOpo6xmt0Kw=
@@ -391,11 +404,16 @@ github.com/russross/blackfriday/v2 v2.0.1/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQD
 github.com/russross/blackfriday/v2 v2.1.0 h1:JIOH55/0cWyOuilr9/qlrm0BSXldqnqwMsf35Ld67mk=
 github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
 github.com/seccomp/libseccomp-golang v0.9.2-0.20220502022130-f33da4d89646/go.mod h1:JA8cRccbGaA1s33RQf7Y1+q9gHmZX1yB/z9WDN1C6fg=
+github.com/sergi/go-diff v1.0.0 h1:Kpca3qRNrduNnOQeazBd0ysaKrUJiIuISHxogkT9RPQ=
 github.com/sergi/go-diff v1.0.0/go.mod h1:0CfEIISq7TuYL3j771MWULgwwjU+GofnZX9QAmXWZgo=
+github.com/shopspring/decimal v1.2.0 h1:abSATXmQEYyShuxI4/vyW3tV1MrKAJzCZ/0zLUXYbsQ=
+github.com/shopspring/decimal v1.2.0/go.mod h1:DKyhrW/HYNuLGql+MJL6WCR6knT2jwCFRcu2hWCYk4o=
 github.com/shurcooL/sanitized_anchor_name v1.0.0/go.mod h1:1NzhyTcUVG4SuEtjjoZeVRXNmyL/1OwPU0+IJeTBvfc=
 github.com/sirupsen/logrus v1.8.1 h1:dJKuHgqk1NNQlqoA6BTlM1Wf9DOH3NBjQyu0h9+AZZE=
 github.com/sirupsen/logrus v1.8.1/go.mod h1:yWOB1SBYBC5VeMP7gHvWumXLIWorT60ONWic61uBYv0=
 github.com/spaolacci/murmur3 v0.0.0-20180118202830-f09979ecbc72/go.mod h1:JwIasOWyU6f++ZhiEuf87xNszmSA2myDM2Kzu9HwQUA=
+github.com/spf13/cast v1.3.1 h1:nFm6S0SMdyzrzcmThSipiEubIDy8WEXKNZ0UOgiRpng=
+github.com/spf13/cast v1.3.1/go.mod h1:Qx5cxh0v+4UWYiBimWS+eyWzqEqokIECu5etghLkUJE=
 github.com/spf13/pflag v1.0.3/go.mod h1:DYY7MBk1bdzusC3SYhjObp+wFpr4gzcvqqNjLnInEg4=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
@@ -456,6 +474,7 @@ golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8U
 golang.org/x/crypto v0.0.0-20191206172530-e9b2fee46413/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 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 v0.7.0/go.mod h1:pYwdfH91IfpZVANVyUOhSIPZaFoJGxTFbZhFTx+dXZU=
 golang.org/x/crypto v0.8.0 h1:pd9TJtTueMTVQXzk8E2XESSMQDj/U7OUu0PqJqPXQjQ=
 golang.org/x/crypto v0.8.0/go.mod h1:mRqEX+O9/h5TFCrQhkgjo2yKi0yYA+9ecGkdQoHrywE=
@@ -539,6 +558,7 @@ golang.org/x/net v0.0.0-20210316092652-d523dce5a7f4/go.mod h1:RBQZq4jEuRlivfhVLd
 golang.org/x/net v0.0.0-20210405180319-a5a99cb37ef4/go.mod h1:p54w0d4576C0XHj96bSt6lcn1PtDYWL6XObtHCRCNQM=
 golang.org/x/net v0.0.0-20210503060351-7fd8e65b6420/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 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 v0.6.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs=
 golang.org/x/net v0.8.0/go.mod h1:QVkue5JL9kW//ek3r6jTKnTFis1tRmNAW2P1shuFdJc=
 golang.org/x/net v0.9.0 h1:aWJ/m6xSmxWBx+V0XRHTlrYrPG56jKsLdTFmsSsCzOM=
@@ -640,12 +660,14 @@ golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBc
 golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 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 v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.7.0 h1:3jlCCIQZPdOYu1h8BkNvLz8Kgwtae2cagcG/VamtZRU=
 golang.org/x/sys v0.7.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 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 v0.5.0/go.mod h1:jMB1sMXY+tzblOD4FWmEbocvup2/aLOaQEp7JmGp78k=
 golang.org/x/term v0.6.0/go.mod h1:m6U89DPEgQRMq3DNkDClhWw02AUbt2daBVO4cn4Hv9U=
 golang.org/x/term v0.7.0 h1:BEvjmm5fURWqcfbSKTdpkDXYBrUS1c0m8agp14W48vQ=
@@ -659,6 +681,7 @@ golang.org/x/text v0.3.4/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.5/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 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 v0.4.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
 golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
 golang.org/x/text v0.8.0/go.mod h1:e1OnstbJyHTd6l/uOt8jFFHp6TRDWZR/bV3emEE/zU8=
 golang.org/x/text v0.9.0 h1:2sjJmO8cDvYveuX97RDLsxlyUxLl+GHoLxBiRdHllBE=

internal/command/server/proxy/run.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"fmt"
 	"strings"
+	"time"
 
 	"forge.cadoles.com/cadoles/bouncer/internal/command/common"
 	"forge.cadoles.com/cadoles/bouncer/internal/config"
@@ -83,5 +84,16 @@ func initQueueLayer(ctx context.Context, conf *config.Config) (*queue.Queue, err
 		return nil, errors.WithStack(err)
 	}
 
-	return queue.New(adapter), nil
+	options := []queue.OptionFunc{
+		queue.WithTemplateDir(string(conf.Layers.Queue.TemplateDir)),
+	}
+
+	if conf.Layers.Queue.DefaultKeepAlive != nil {
+		options = append(options, queue.WithDefaultKeepAlive(time.Duration(*conf.Layers.Queue.DefaultKeepAlive)))
+	}
+
+	return queue.New(
+		adapter,
+		options...,
+	), nil
 }

internal/config/config.go

@@ -14,6 +14,7 @@ type Config struct {
 	Proxy  ProxyServerConfig `yaml:"proxy"`
 	Redis  RedisConfig       `yaml:"redis"`
 	Logger LoggerConfig      `yaml:"logger"`
+	Layers LayersConfig      `yaml:"layers"`
 }
 
 // NewFromFile retrieves the configuration from the given file
@@ -46,6 +47,7 @@ func NewDefault() *Config {
 		Proxy:  NewDefaultProxyServerConfig(),
 		Logger: NewDefaultLoggerConfig(),
 		Redis:  NewDefaultRedisConfig(),
+		Layers: NewDefaultLayersConfig(),
 	}
 }
 

internal/config/environment.go

@@ -4,6 +4,7 @@ import (
 	"os"
 	"regexp"
 	"strconv"
+	"time"
 
 	"github.com/pkg/errors"
 	"gopkg.in/yaml.v3"
@@ -123,3 +124,37 @@ func (iss *InterpolatedStringSlice) UnmarshalYAML(value *yaml.Node) error {
 
 	return nil
 }
+
+type InterpolatedDuration time.Duration
+
+func (id *InterpolatedDuration) UnmarshalYAML(value *yaml.Node) error {
+	var str string
+
+	if err := value.Decode(&str); err != nil {
+		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 = os.Getenv(match[1])
+	}
+
+	duration, err := time.ParseDuration(str)
+	if err != nil {
+		return errors.Wrapf(err, "could not parse duration '%v',  line '%d'", str, value.Line)
+	}
+
+	*id = InterpolatedDuration(duration)
+
+	return nil
+}
+
+func (id *InterpolatedDuration) MarshalYAML() (interface{}, error) {
+	duration := time.Duration(*id)
+
+	return duration.String(), nil
+}
+
+func NewInterpolatedDuration(d time.Duration) *InterpolatedDuration {
+	id := InterpolatedDuration(d)
+	return &id
+}

internal/config/layers.go

@@ -0,0 +1,21 @@
+package config
+
+import "time"
+
+type LayersConfig struct {
+	Queue QueueLayerConfig `yaml:"queue"`
+}
+
+func NewDefaultLayersConfig() LayersConfig {
+	return LayersConfig{
+		Queue: QueueLayerConfig{
+			TemplateDir:      "./layers/queue/templates",
+			DefaultKeepAlive: NewInterpolatedDuration(time.Minute),
+		},
+	}
+}
+
+type QueueLayerConfig struct {
+	TemplateDir      InterpolatedString    `yaml:"templateDir"`
+	DefaultKeepAlive *InterpolatedDuration `yaml:"defaultKeepAlive"`
+}

internal/queue/layer_options.go

@@ -15,11 +15,11 @@ type LayerOptions struct {
 	KeepAlive time.Duration `mapstructure:"keepAlive"`
 }
 
-func fromStoreOptions(storeOptions store.LayerOptions) (*LayerOptions, error) {
+func fromStoreOptions(storeOptions store.LayerOptions, defaultKeepAlive time.Duration) (*LayerOptions, error) {
 	layerOptions := LayerOptions{
 		Capacity:  1000,
 		Matchers:  []string{"*"},
-		KeepAlive: 30 * time.Second,
+		KeepAlive: defaultKeepAlive,
 	}
 
 	config := mapstructure.DecoderConfig{

internal/queue/options.go

@@ -1,9 +1,29 @@
 package queue
 
-type Options struct{}
+import "time"
+
+type Options struct {
+	TemplateDir      string
+	DefaultKeepAlive time.Duration
+}
 
 type OptionFunc func(*Options)
 
 func defaultOptions() *Options {
-	return &Options{}
+	return &Options{
+		TemplateDir:      "./templates",
+		DefaultKeepAlive: time.Minute,
+	}
+}
+
+func WithTemplateDir(templateDir string) OptionFunc {
+	return func(o *Options) {
+		o.TemplateDir = templateDir
+	}
+}
+
+func WithDefaultKeepAlive(keepAlive time.Duration) OptionFunc {
+	return func(o *Options) {
+		o.DefaultKeepAlive = keepAlive
+	}
 }

internal/queue/queue.go

@@ -3,13 +3,17 @@ package queue
 import (
 	"context"
 	"fmt"
+	"html/template"
 	"net/http"
+	"path/filepath"
+	"sync"
 	"sync/atomic"
 	"time"
 
 	"forge.cadoles.com/Cadoles/go-proxy"
 	"forge.cadoles.com/cadoles/bouncer/internal/proxy/director"
 	"forge.cadoles.com/cadoles/bouncer/internal/store"
+	"github.com/Masterminds/sprig/v3"
 	"github.com/google/uuid"
 	"github.com/pkg/errors"
 	"gitlab.com/wpetit/goweb/logger"
@@ -18,7 +22,14 @@ import (
 const LayerType store.LayerType = "queue"
 
 type Queue struct {
-	adapter           Adapter
+	adapter Adapter
+
+	defaultKeepAlive time.Duration
+
+	templateDir string
+	loadOnce    sync.Once
+	tmpl        *template.Template
+
 	refreshJobRunning uint32
 }
 
@@ -33,7 +44,7 @@ func (q *Queue) Middleware(layer *store.Layer) proxy.Middleware {
 		fn := func(w http.ResponseWriter, r *http.Request) {
 			ctx := r.Context()
 
-			options, err := fromStoreOptions(layer.Options)
+			options, err := fromStoreOptions(layer.Options, q.defaultKeepAlive)
 			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)
@@ -102,7 +113,52 @@ func (q *Queue) renderQueuePage(w http.ResponseWriter, r *http.Request, queueNam
 		return
 	}
 
-	http.Error(w, fmt.Sprintf("queued (rank: %d, status: %d/%d)", rank+1, status.Sessions, options.Capacity), http.StatusServiceUnavailable)
+	q.loadOnce.Do(func() {
+		pattern := filepath.Join(q.templateDir, "*.gohtml")
+
+		logger.Info(ctx, "loading queue page templates", logger.F("pattern", pattern))
+
+		tmpl, err := template.New("").Funcs(sprig.FuncMap()).ParseGlob(pattern)
+		if err != nil {
+			logger.Error(ctx, "could not load queue templates", logger.E(errors.WithStack(err)))
+
+			return
+		}
+
+		q.tmpl = tmpl
+	})
+
+	if q.tmpl == nil {
+		logger.Error(ctx, "queue page templates not loaded", logger.E(errors.WithStack(err)))
+		http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
+
+		return
+	}
+
+	templateData := struct {
+		QueueName       string
+		LayerOptions    *LayerOptions
+		Rank            int64
+		CurrentSessions int64
+		MaxSessions     int64
+		RefreshRate     int64
+	}{
+		QueueName:       queueName,
+		LayerOptions:    options,
+		Rank:            rank + 1,
+		CurrentSessions: status.Sessions,
+		MaxSessions:     options.Capacity,
+		RefreshRate:     5,
+	}
+
+	w.WriteHeader(http.StatusServiceUnavailable)
+
+	if err := q.tmpl.ExecuteTemplate(w, "queue", templateData); err != nil {
+		logger.Error(ctx, "could not render queue page", logger.E(errors.WithStack(err)))
+		http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
+
+		return
+	}
 }
 
 func (q *Queue) refreshQueue(queueName string, keepAlive time.Duration) {
@@ -136,7 +192,9 @@ func New(adapter Adapter, funcs ...OptionFunc) *Queue {
 	}
 
 	return &Queue{
-		adapter: adapter,
+		adapter:          adapter,
+		templateDir:      opts.TemplateDir,
+		defaultKeepAlive: opts.DefaultKeepAlive,
 	}
 }
 

internal/setup/queue_repository.go

@@ -10,10 +10,10 @@ import (
 	queueRedis "forge.cadoles.com/cadoles/bouncer/internal/queue/redis"
 )
 
-func NewQueueAdapter(ctx context.Context, conf config.RedisConfig) (queue.Adapter, error) {
+func NewQueueAdapter(ctx context.Context, redisConf config.RedisConfig) (queue.Adapter, error) {
 	rdb := redis.NewUniversalClient(&redis.UniversalOptions{
-		Addrs:      conf.Adresses,
-		MasterName: string(conf.Master),
+		Addrs:      redisConf.Adresses,
+		MasterName: string(redisConf.Master),
 	})
 
 	return queueRedis.NewAdapter(rdb, 2), nil

layers/queue/templates/queue.gohtml

@@ -0,0 +1,84 @@
+{{ define "queue" }}
+<!DOCTYPE html>
+<html>
+    <head>
+        <meta charset="UTF-8">
+        <meta name="viewport" content="width=device-width,initial-scale=1">
+        <title>Veuillez patienter - {{ .QueueName }}</title>
+        <meta http-equiv="refresh" content="{{ .RefreshRate }}">
+        <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: #f7f7f7;
+            }
+
+            #container {
+              display: flex;
+              align-items: center;
+              justify-content: center;
+              height: 100%;
+              flex-direction: column;
+            }
+
+            #queue {
+              padding: 1.5em 1em;
+              border: 1px solid #e0e0e0;
+              background-color: white;
+              border-radius: 5px;
+              box-shadow: 2px 2px #cccccc1c;
+              color: #333333 !important;
+            }
+
+            .title {
+              margin-bottom: 1.2em;
+            }
+
+            p {
+              margin-bottom: 0.5em;
+            }
+
+            .text-centered {
+              text-align: center;
+            }
+
+            .footer {
+              font-size: 0.7em;
+              margin-top: 2em;
+              text-align: right;
+            }
+        </style>
+    </head>
+    <body>
+        <div id="container">
+            <div id="queue">
+                <h2 class="title">Un instant s'il vous plaît...</h2>
+                <p>Le site auquel vous souhaitez accéder est actuellement surchargé.</p>
+                {{ $rank := sub .Rank .MaxSessions }}
+                {{ $waiting := sub .CurrentSessions .MaxSessions }}
+                <p class="text-centered">
+                  <b>Position: {{ $rank }}</b> <em>(sur {{ $waiting }} en attente)</em>
+                </p>
+                <p class="text-centered"><em>Cette page se rafraîchira automatiquement lorsqu'une place sera disponible.</em></p>
+                <p class="footer">Propulsé par <a href="https://forge.cadoles.com/Cadoles/bouncer">Bouncer</a>.</p>
+            </div>
+        </div>
+    </body>
+</html>
+{{ end }}

misc/packaging/common/config.yml

@@ -61,3 +61,12 @@ logger:
     level: 1
     # Format des logs, "human" ou "json"
     format: human
+
+# Configuration des différents layers
+layers:
+    # Configuration du layer "queue"
+    queue:
+        # Répertoire contenant les templates
+        templateDir: "/etc/bouncer/layers/queue/templates"
+        # Temps de vie par défaut d'une session
+        defaultKeepAlive: 1m

modd.conf

@@ -2,6 +2,7 @@
 internal/**/*.json
 modd.conf
 config.yml
+layers/**
 .env {
     prep: make RUN_INSTALL_TESTS=no GOTEST_ARGS="-short" test
     prep: make build-bouncer