Cadoles/bouncer
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Code Issues 2 Pull Requests 1 Projects Releases 3 Wiki Activity

Métriques de base Prometheus #4

Merged
wpetit merged 2 commits from metrics into develop 2023-07-01 01:32:12 +02:00
Conversation 0 Commits 2 Files Changed 17 +344 -47
16 changed files with 344 additions and 47 deletions
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Showing only changes of commit 56609ec316 - Show all commits

12
go.mod
View File

@ -21,6 +21,7 @@ require (
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/beorn7/perks v1.0.1 // indirect
github.com/cenkalti/backoff/v4 v4.1.3 // indirect
github.com/cespare/xxhash/v2 v2.2.0 // indirect
github.com/containerd/continuity v0.3.0 // indirect
@ -30,18 +31,24 @@ require (
github.com/docker/go-connections v0.4.0 // indirect
github.com/docker/go-units v0.4.0 // indirect
github.com/gogo/protobuf v1.3.2 // indirect
github.com/golang/protobuf v1.5.3 // 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/kr/pretty v0.3.1 // indirect
github.com/mattn/go-runewidth v0.0.13 // indirect
github.com/matttproud/golang_protobuf_extensions v1.0.4 // 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/prometheus/client_golang v1.16.0 // indirect
github.com/prometheus/client_model v0.3.0 // indirect
github.com/prometheus/common v0.42.0 // indirect
github.com/prometheus/procfs v0.10.1 // indirect
github.com/qri-io/jsonpointer v0.1.1 // indirect
github.com/rivo/uniseg v0.2.0 // indirect
github.com/rogpeppe/go-internal v1.10.0 // indirect
@ -52,6 +59,7 @@ require (
github.com/xeipuuv/gojsonreference v0.0.0-20180127040603-bd5ef7bd5415 // indirect
github.com/xeipuuv/gojsonschema v1.2.0 // indirect
google.golang.org/genproto v0.0.0-20220314164441-57ef72a4c106 // indirect
google.golang.org/protobuf v1.30.0 // indirect
gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c // indirect
gopkg.in/yaml.v2 v2.4.0 // indirect
)
@ -88,7 +96,7 @@ require (
go.opencensus.io v0.24.0 // indirect
golang.org/x/crypto v0.8.0 // indirect
golang.org/x/mod v0.9.0 // indirect
golang.org/x/sys v0.7.0 // indirect
golang.org/x/sys v0.8.0 // indirect
golang.org/x/term v0.7.0 // indirect
golang.org/x/tools v0.7.0 // indirect
golang.org/x/xerrors v0.0.0-20220907171357-04be3eba64a2 // indirect

21
go.sum
View File

@ -80,6 +80,8 @@ github.com/alecthomas/kong v0.2.1-0.20190708041108-0548c6b1afae/go.mod h1:+inYUS
github.com/alecthomas/kong-hcl v0.1.8-0.20190615233001-b21fea9723c8/go.mod h1:MRgZdU3vrFd05IQ89AxUZ0aYdF39BYoNFa324SodPCA=
github.com/alecthomas/repr v0.0.0-20180818092828-117648cd9897/go.mod h1:xTS7Pm1pD1mvyM075QCDSRqH6qRLXylzS24ZTpRiSzQ=
github.com/antihax/optional v1.0.0/go.mod h1:uupD/76wgC+ih3iEmQUL+0Ugr19nfwCT1kdvxnR2qWY=
github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
github.com/bsm/ginkgo/v2 v2.7.0 h1:ItPMPH90RbmZJt5GtkcNvIRuGEdwlBItdNVoyzaNQao=
github.com/bsm/gomega v1.26.0 h1:LhQm+AFcgV2M0WyKroMASzAzCAJVpAxQXv4SaI9a69Y=
github.com/btcsuite/btcd v0.20.1-beta/go.mod h1:wVuoA8VJLEcwgqHBwHmzLRazpKxTv13Px/pDuV7OomQ=
@ -230,6 +232,8 @@ github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaS
github.com/golang/protobuf v1.5.1/go.mod h1:DopwsBzvsk0Fs44TXzsVbJyPhcCPeIwnvohx4u74HPM=
github.com/golang/protobuf v1.5.2 h1:ROPKBNFfQgOUMifHyP+KYbvpjbdoFNs+aK7DXlji0Tw=
github.com/golang/protobuf v1.5.2/go.mod h1:XVQd3VNwM+JqD3oG2Ue2ip4fOMUkwXdXDdiuN0vRsmY=
github.com/golang/protobuf v1.5.3 h1:KhyjKVUg7Usr/dYsdSqoFveMYd5ko72D+zANwlG1mmg=
github.com/golang/protobuf v1.5.3/go.mod h1:XVQd3VNwM+JqD3oG2Ue2ip4fOMUkwXdXDdiuN0vRsmY=
github.com/golang/snappy v0.0.3/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
github.com/golang/snappy v0.0.4/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
github.com/google/btree v0.0.0-20180813153112-4030bb1f1f0c/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ=
@ -309,6 +313,7 @@ github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORN
github.com/kr/pretty v0.2.1/go.mod h1:ipq/a2n7PKx3OHsz4KJII5eveXtPO4qwEXGdVfWzfnI=
github.com/kr/pretty v0.3.0 h1:WgNl7dwNpEZ6jJ9k1snq4pZsg7DOEN8hP9Xw0Tsjwk0=
github.com/kr/pretty v0.3.0/go.mod h1:640gp4NfQd8pI5XOwp5fnNeVWj67G7CFk/SaSQn7NBk=
github.com/kr/pretty v0.3.1/go.mod h1:hoEshYVHaxMs3cyo3Yncou5ZscifuDolrwPKZanG3xk=
github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
@ -347,6 +352,8 @@ 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/matttproud/golang_protobuf_extensions v1.0.4 h1:mmDVorXM7PCGKw94cs5zkfA9PSy5pEvNWRP0ET0TIVo=
github.com/matttproud/golang_protobuf_extensions v1.0.4/go.mod h1:BSXmuO+STAnVfrANrmjBb36TMTDstsz7MSK+HVaYKv4=
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=
@ -379,6 +386,7 @@ github.com/opencontainers/selinux v1.10.0/go.mod h1:2i0OySw99QjzBBQByd1Gr9gSjvuh
github.com/ory/dockertest/v3 v3.10.0 h1:4K3z2VMe8Woe++invjaTB7VRyQXQy5UY+loujO4aNE4=
github.com/ory/dockertest/v3 v3.10.0/go.mod h1:nr57ZbRWMqfsdGdFNLHz5jjNdDb7VVFnzAeW1n5N1Lg=
github.com/oxtoacart/bpool v0.0.0-20190530202638-03653db5a59c/go.mod h1:X07ZCGwUbLaax7L0S3Tw4hpejzu63ZrrQiUe6W0hcy0=
github.com/pkg/diff v0.0.0-20210226163009-20ebb0f2a09e/go.mod h1:pJLUxLENpZxwdsKMEsNbx1VGcRFpLqf3715MtcvvzbA=
github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
@ -386,7 +394,15 @@ github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINE
github.com/pkg/profile v1.6.0/go.mod h1:qBsxPvzyUincmltOk6iyRVxHYg4adc0OFOv72ZdLa18=
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/prometheus/client_golang v1.16.0 h1:yk/hx9hDbrGHovbci4BY+pRMfSuuat626eFsHb7tmT8=
github.com/prometheus/client_golang v1.16.0/go.mod h1:Zsulrv/L9oM40tJ7T815tM89lFEugiJ9HzIqaAx4LKc=
github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
github.com/prometheus/client_model v0.3.0 h1:UBgGFHqYdG/TPFD1B1ogZywDqEkwp3fBMvqdiQ7Xew4=
github.com/prometheus/client_model v0.3.0/go.mod h1:LDGWKZIo7rky3hgvBe+caln+Dr3dPggB5dvjtD7w9+w=
github.com/prometheus/common v0.42.0 h1:EKsfXEYo4JpWMHH5cg+KOUWeuJSov1Id8zGR8eeI1YM=
github.com/prometheus/common v0.42.0/go.mod h1:xBwqVerjNdUDjgODMpudtOMwlOwf2SaTr1yjz4b7Zbc=
github.com/prometheus/procfs v0.10.1 h1:kYK1Va/YMlutzCGazswoHKo//tZVlFpKYh+PymziUAg=
github.com/prometheus/procfs v0.10.1/go.mod h1:nwNm2aOCAYw8uTR/9bWRREkZFxAUcWzPHWJq+XBB/FM=
github.com/qri-io/jsonpointer v0.1.1 h1:prVZBZLL6TW5vsSB9fFHFAMBLI4b0ri5vribQlTJiBA=
github.com/qri-io/jsonpointer v0.1.1/go.mod h1:DnJPaYgiKu56EuDp8TU5wFLdZIcAnb/uH9v37ZaMV64=
github.com/qri-io/jsonschema v0.2.1 h1:NNFoKms+kut6ABPf6xiKNM5214jzxAhDBrPHCJ97Wg0=
@ -398,6 +414,7 @@ github.com/rivo/uniseg v0.2.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJ
github.com/rogpeppe/fastuuid v1.2.0/go.mod h1:jVj6XXZzXRy/MSR5jhDC/2q6DgLz+nrA6LYCDYWNEvQ=
github.com/rogpeppe/go-internal v1.3.0/go.mod h1:M8bDsm7K2OlrFYOpmOWEs/qY81heoFRclV5y23lUDJ4=
github.com/rogpeppe/go-internal v1.6.1/go.mod h1:xXDCJY+GAPziupqXw64V24skbSoqbTEfhy4qGm1nDQc=
github.com/rogpeppe/go-internal v1.9.0/go.mod h1:WtVeX8xhTBvf0smdhujwtBcq4Qrzq/fJaraNFVN+nFs=
github.com/rogpeppe/go-internal v1.10.0 h1:TMyTOH3F/DB16zRVcYyreMH6GnZZrwQVAoYjRBZyWFQ=
github.com/rogpeppe/go-internal v1.10.0/go.mod h1:UQnix2H7Ngw/k4C5ijL5+65zddjncjaFoBhdsK/akog=
github.com/russross/blackfriday/v2 v2.0.1/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
@ -665,6 +682,8 @@ 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/sys v0.8.0 h1:EBmGv8NaZBZTWvrbjNoL6HVt+IVy3QDQpJs7VRIw3tU=
golang.org/x/sys v0.8.0/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=
@ -891,6 +910,8 @@ google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp0
google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
google.golang.org/protobuf v1.27.1 h1:SnqbnDw1V7RiZcXPx5MEeqPv2s79L9i7BJUlG/+RurQ=
google.golang.org/protobuf v1.27.1/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
google.golang.org/protobuf v1.30.0 h1:kPPoIgf3TsEvrm0PFe15JQ+570QVxYzEvvHqChK+cng=
google.golang.org/protobuf v1.30.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=

20
internal/admin/server.go
View File

@ -16,6 +16,7 @@ import (
"github.com/go-chi/chi/v5/middleware"
"github.com/go-chi/cors"
"github.com/pkg/errors"
"github.com/prometheus/client_golang/prometheus/promhttp"
"gitlab.com/wpetit/goweb/logger"
)
@ -101,6 +102,25 @@ func (s *Server) run(parentCtx context.Context, addrs chan net.Addr, errs chan e
router.Use(corsMiddleware.Handler)
if s.serverConfig.Metrics.Enabled {
metrics := s.serverConfig.Metrics
logger.Info(ctx, "enabling metrics", logger.F("endpoint", metrics.Endpoint))
router.Group(func(r chi.Router) {
if metrics.BasicAuth != nil {
logger.Info(ctx, "enabling authentication on metrics endpoint")
r.Use(middleware.BasicAuth(
"metrics",
metrics.BasicAuth.CredentialsMap(),
))
}
r.Handle(string(metrics.Endpoint), promhttp.Handler())
})
}
router.Route("/api/v1", func(r chi.Router) {
r.Group(func(r chi.Router) {
r.Use(auth.Middleware(

5
internal/command/common/load_config.go
View File

@ -4,7 +4,6 @@ import (
"forge.cadoles.com/cadoles/bouncer/internal/config"
"github.com/pkg/errors"
"github.com/urfave/cli/v2"
"gitlab.com/wpetit/goweb/logger"
)
func LoadConfig(ctx *cli.Context) (*config.Config, error) {
@ -16,15 +15,11 @@ func LoadConfig(ctx *cli.Context) (*config.Config, error) {
)
if configFile != "" {
logger.Info(ctx.Context, "loading config", logger.F("config", configFile))
conf, err = config.NewFromFile(configFile)
if err != nil {
return nil, errors.Wrapf(err, "Could not load config file '%s'", configFile)
}
} else {
logger.Info(ctx.Context, "using default config")
conf = config.NewDefault()
}

2
internal/command/config/dump.go
View File

@ -18,6 +18,8 @@ func Dump() *cli.Command {
Usage: "Dump the current configuration",
Flags: flags,
Action: func(ctx *cli.Context) error {
logger.SetLevel(logger.LevelError)
conf, err := common.LoadConfig(ctx)
if err != nil {
return errors.Wrap(err, "Could not load configuration")

2
internal/config/admin_server.go
View File

@ -4,6 +4,7 @@ type AdminServerConfig struct {
HTTP HTTPConfig `yaml:"http"`
CORS CORSConfig `yaml:"cors"`
Auth AuthConfig `yaml:"auth"`
Metrics MetricsConfig `yaml:"metrics"`
}
func NewDefaultAdminServerConfig() AdminServerConfig {
@ -11,6 +12,7 @@ func NewDefaultAdminServerConfig() AdminServerConfig {
HTTP: NewHTTPConfig("127.0.0.1", 8081),
CORS: NewDefaultCORSConfig(),
Auth: NewDefaultAuthConfig(),
Metrics: NewDefaultMetricsConfig(),
}
}

2
internal/config/logger.go
View File

@ -9,7 +9,7 @@ type LoggerConfig struct {
func NewDefaultLoggerConfig() LoggerConfig {
return LoggerConfig{
Level: InterpolatedInt(logger.LevelInfo),
Level: InterpolatedInt(logger.LevelError),
Format: InterpolatedString(logger.FormatHuman),
}
}

35
internal/config/metrics.go Normal file
View File

@ -0,0 +1,35 @@
package config
import "fmt"
type MetricsConfig struct {
Enabled InterpolatedBool `yaml:"enabled"`
Endpoint InterpolatedString `yaml:"endpoint"`
BasicAuth *BasicAuthConfig `yaml:"basicAuth"`
}
type BasicAuthConfig struct {
Credentials *InterpolatedMap `yaml:"credentials"`
}
func (c *BasicAuthConfig) CredentialsMap() map[string]string {
if c.Credentials == nil {
return map[string]string{}
}
credentials := make(map[string]string, len(*c.Credentials))
for k, v := range *c.Credentials {
credentials[k] = fmt.Sprintf("%v", v)
}
return credentials
}
func NewDefaultMetricsConfig() MetricsConfig {
return MetricsConfig{
Enabled: true,
Endpoint: "/.bouncer/metrics",
BasicAuth: nil,
}
}

2
internal/config/proxy_server.go
View File

@ -2,10 +2,12 @@ package config
type ProxyServerConfig struct {
HTTP HTTPConfig `yaml:"http"`
Metrics MetricsConfig `yaml:"metrics"`
}
func NewDefaultProxyServerConfig() ProxyServerConfig {
return ProxyServerConfig{
HTTP: NewHTTPConfig("0.0.0.0", 8080),
Metrics: NewDefaultMetricsConfig(),
}
}

3
internal/proxy/director/director.go
View File

@ -10,6 +10,7 @@ import (
"forge.cadoles.com/Cadoles/go-proxy/wildcard"
"forge.cadoles.com/cadoles/bouncer/internal/store"
"github.com/pkg/errors"
"github.com/prometheus/client_golang/prometheus"
"gitlab.com/wpetit/goweb/logger"
)
@ -59,6 +60,8 @@ MAIN:
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)

73
internal/proxy/director/layer/queue/debouncer.go Normal file
View File

@ -0,0 +1,73 @@
package queue
import (
"sync"
"time"
"github.com/pkg/errors"
)
type DebouncerMap struct {
debouncers sync.Map
}
func NewDebouncerMap() *DebouncerMap {
return &DebouncerMap{
debouncers: sync.Map{},
}
}
func (m *DebouncerMap) Do(key string, after time.Duration, fn func()) {
newDebouncer := NewDebouncer(after)
rawDebouncer, loaded := m.debouncers.LoadOrStore(key, newDebouncer)
debouncer, ok := rawDebouncer.(*Debouncer)
if !ok {
panic(errors.Errorf("unexpected debouncer value, expected '%T', got '%T'", newDebouncer, rawDebouncer))
}
if loaded {
debouncer.Update(after)
}
debouncer.Do(fn)
}
func NewDebouncer(after time.Duration) *Debouncer {
return &Debouncer{after: after}
}
type Debouncer struct {
mu sync.Mutex
after time.Duration
timer *time.Timer
fn func()
}
func (d *Debouncer) Do(fn func()) {
d.mu.Lock()
defer d.mu.Unlock()
if d.timer != nil {
d.timer.Stop()
}
d.fn = fn
d.timer = time.AfterFunc(d.after, d.fn)
}
func (d *Debouncer) Update(after time.Duration) {
d.mu.Lock()
defer d.mu.Unlock()
if after == d.after {
return
}
if d.timer != nil {
d.timer.Stop()
}
d.after = after
d.timer = time.AfterFunc(d.after, d.fn)
}

31
internal/proxy/director/layer/queue/metrics.go Normal file
View File

@ -0,0 +1,31 @@
package queue
import (
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/promauto"
)
const (
metricNamespace = "bouncer_layer_queue"
metricLabelProxy = "proxy"
metricLabelLayer = "layer"
)
var (
metricQueueSessions = promauto.NewGaugeVec(
prometheus.GaugeOpts{
Name: "sessions",
Help: "Bouncer's queue layer current sessions",
Namespace: metricNamespace,
},
[]string{metricLabelProxy, metricLabelLayer},
)
metricQueueCapacity = promauto.NewGaugeVec(
prometheus.GaugeOpts{
Name: "capacity",
Help: "Bouncer's queue layer capacity",
Namespace: metricNamespace,
},
[]string{metricLabelProxy, metricLabelLayer},
)
)

86
internal/proxy/director/layer/queue/queue.go
View File

@ -4,6 +4,7 @@ import (
"context"
"fmt"
"html/template"
"math/rand"
"net/http"
"path/filepath"
"sync"
@ -16,6 +17,7 @@ import (
"github.com/Masterminds/sprig/v3"
"github.com/google/uuid"
"github.com/pkg/errors"
"github.com/prometheus/client_golang/prometheus"
"gitlab.com/wpetit/goweb/logger"
)
@ -31,6 +33,8 @@ type Queue struct {
tmpl *template.Template
refreshJobRunning uint32
updateMetricsJobRunning uint32
postKeepAliveDebouncer *DebouncerMap
}
// LayerType implements director.MiddlewareLayer
@ -52,6 +56,8 @@ func (q *Queue) Middleware(layer *store.Layer) proxy.Middleware {
return
}
defer q.updateMetrics(ctx, layer.Proxy, layer.Name, options)
cookieName := q.getCookieName(layer.Name)
cookie, err := r.Cookie(cookieName)
@ -72,8 +78,6 @@ func (q *Queue) Middleware(layer *store.Layer) proxy.Middleware {
sessionID := cookie.Value
queueName := string(layer.Name)
q.refreshQueue(queueName, options.KeepAlive)
rank, err := q.adapter.Touch(ctx, queueName, sessionID)
if err != nil {
logger.Error(ctx, "could not retrieve session rank", logger.E(errors.WithStack(err)))
@ -102,6 +106,30 @@ func (q *Queue) Middleware(layer *store.Layer) proxy.Middleware {
}
}
func (q *Queue) updateSessionsMetric(ctx context.Context, proxyName store.ProxyName, layerName store.LayerName) {
if !atomic.CompareAndSwapUint32(&q.updateMetricsJobRunning, 0, 1) {
return
}
defer atomic.StoreUint32(&q.updateMetricsJobRunning, 0)
queueName := string(layerName)
status, err := q.adapter.Status(ctx, queueName)
if err != nil {
logger.Error(ctx, "could not retrieve queue status", logger.E(errors.WithStack(err)))
return
}
metricQueueSessions.With(
prometheus.Labels{
metricLabelLayer: string(layerName),
metricLabelProxy: string(proxyName),
},
).Set(float64(status.Sessions))
}
func (q *Queue) renderQueuePage(w http.ResponseWriter, r *http.Request, queueName string, options *LayerOptions, rank int64) {
ctx := r.Context()
@ -135,20 +163,22 @@ func (q *Queue) renderQueuePage(w http.ResponseWriter, r *http.Request, queueNam
return
}
refreshRate := time.Duration(int64(options.KeepAlive.Seconds()/2)) * time.Second
templateData := struct {
QueueName string
LayerOptions *LayerOptions
Rank int64
CurrentSessions int64
MaxSessions int64
RefreshRate int64
RefreshRate time.Duration
}{
QueueName: queueName,
LayerOptions: options,
Rank: rank + 1,
CurrentSessions: status.Sessions,
MaxSessions: options.Capacity,
RefreshRate: 5,
RefreshRate: refreshRate,
}
w.WriteHeader(http.StatusServiceUnavailable)
@ -161,24 +191,55 @@ func (q *Queue) renderQueuePage(w http.ResponseWriter, r *http.Request, queueNam
}
}
func (q *Queue) refreshQueue(queueName string, keepAlive time.Duration) {
func (q *Queue) refreshQueue(ctx context.Context, layerName store.LayerName, keepAlive time.Duration) {
if !atomic.CompareAndSwapUint32(&q.refreshJobRunning, 0, 1) {
return
}
go func() {
defer atomic.StoreUint32(&q.refreshJobRunning, 0)
ctx, cancel := context.WithTimeout(context.Background(), keepAlive*2)
defer cancel()
if err := q.adapter.Refresh(ctx, queueName, keepAlive); err != nil {
if err := q.adapter.Refresh(ctx, string(layerName), keepAlive); err != nil {
logger.Error(ctx, "could not refresh queue",
logger.E(errors.WithStack(err)),
logger.F("queue", queueName),
logger.F("queue", layerName),
)
}
}()
}
func (q *Queue) updateMetrics(ctx context.Context, proxyName store.ProxyName, layerName store.LayerName, options *LayerOptions) {
// Update queue capacity metric
metricQueueCapacity.With(
prometheus.Labels{
metricLabelLayer: string(layerName),
metricLabelProxy: string(proxyName),
},
).Set(float64(options.Capacity))
// Refresh queue data and metrics
q.refreshQueue(ctx, layerName, options.KeepAlive)
q.updateSessionsMetric(ctx, proxyName, layerName)
// (Re)schedule an update job after session ttl + semi-random time padding
// to update metrics after last session expiration
randDuration := rand.Int63n(int64(options.KeepAlive))
timePadding := options.KeepAlive/2 + time.Duration(randDuration)
after := options.KeepAlive + timePadding
debouncingKey := fmt.Sprintf("%s/%s", proxyName, layerName)
q.postKeepAliveDebouncer.Do(debouncingKey, after, func() {
ctx := logger.With(
context.Background(),
logger.F("proxy", proxyName),
logger.F("layer", layerName),
logger.F("after", after),
)
logger.Info(ctx, "running post keep alive refresh job")
q.refreshQueue(ctx, layerName, options.KeepAlive)
q.updateSessionsMetric(ctx, proxyName, layerName)
})
}
func (q *Queue) getCookieName(layerName store.LayerName) string {
@ -195,6 +256,7 @@ func New(adapter Adapter, funcs ...OptionFunc) *Queue {
adapter: adapter,
templateDir: opts.TemplateDir,
defaultKeepAlive: opts.DefaultKeepAlive,
postKeepAliveDebouncer: NewDebouncerMap(),
}
}

20
internal/proxy/director/metrics.go Normal file
View File

@ -0,0 +1,20 @@
package director
import (
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/promauto"
)
const (
metricNamespace = "bouncer_proxy_director"
metricLabelProxy = "proxy"
)
var metricProxyRequestsTotal = promauto.NewCounterVec(
prometheus.CounterOpts{
Name: "proxy_requests_total",
Help: "Bouncer proxy total requests",
Namespace: metricNamespace,
},
[]string{metricLabelProxy},
)

27
internal/proxy/server.go
View File

@ -15,6 +15,7 @@ import (
"github.com/go-chi/chi/v5"
"github.com/go-chi/chi/v5/middleware"
"github.com/pkg/errors"
"github.com/prometheus/client_golang/prometheus/promhttp"
"gitlab.com/wpetit/goweb/logger"
)
@ -84,7 +85,28 @@ func (s *Server) run(parentCtx context.Context, addrs chan net.Addr, errs chan e
)
router.Use(middleware.RequestLogger(bouncerChi.NewLogFormatter()))
router.Use(director.Middleware())
if s.serverConfig.Metrics.Enabled {
metrics := s.serverConfig.Metrics
logger.Info(ctx, "enabling metrics", logger.F("endpoint", metrics.Endpoint))
router.Group(func(r chi.Router) {
if metrics.BasicAuth != nil {
logger.Info(ctx, "enabling authentication on metrics endpoint")
r.Use(middleware.BasicAuth(
"metrics",
metrics.BasicAuth.CredentialsMap(),
))
}
r.Handle(string(metrics.Endpoint), promhttp.Handler())
})
}
router.Group(func(r chi.Router) {
r.Use(director.Middleware())
handler := proxy.New(
proxy.WithRequestTransformers(
@ -95,7 +117,8 @@ func (s *Server) run(parentCtx context.Context, addrs chan net.Addr, errs chan e
),
)
router.Handle("/*", handler)
r.Handle("/*", handler)
})
if err := http.Serve(listener, router); err != nil && !errors.Is(err, net.ErrClosed) {
errs <- errors.WithStack(err)

2
layers/queue/templates/queue.gohtml
View File

@ -5,7 +5,7 @@
<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 }}">
<meta http-equiv="refresh" content="{{ .RefreshRate.Seconds }}">
<style>
html {
box-sizing: border-box;