feat: Traefik Pilot integration.
Co-authored-by: Ludovic Fernandez <ldez@users.noreply.github.com>
This commit is contained in:
Julien Salleyron
Traefiker Bot
parent
cb6ec507e2
commit
4a31544024
7 changed files with 421 additions and 14 deletions
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@ -18,10 +18,12 @@ import (
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"github.com/containous/traefik/v2/pkg/cli"
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"github.com/containous/traefik/v2/pkg/collector"
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"github.com/containous/traefik/v2/pkg/config/dynamic"
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"github.com/containous/traefik/v2/pkg/config/runtime"
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"github.com/containous/traefik/v2/pkg/config/static"
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"github.com/containous/traefik/v2/pkg/log"
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"github.com/containous/traefik/v2/pkg/metrics"
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"github.com/containous/traefik/v2/pkg/middlewares/accesslog"
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"github.com/containous/traefik/v2/pkg/pilot"
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"github.com/containous/traefik/v2/pkg/provider/acme"
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"github.com/containous/traefik/v2/pkg/provider/aggregator"
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"github.com/containous/traefik/v2/pkg/provider/traefik"
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@ -224,7 +226,16 @@ func setupServer(staticConfiguration *static.Configuration) (*server.Server, err
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metricsRegistry.LastConfigReloadSuccessGauge().Set(float64(time.Now().Unix()))
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})
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watcher.AddListener(switchRouter(routerFactory, acmeProviders, serverEntryPointsTCP, serverEntryPointsUDP))
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var aviator *pilot.Pilot
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if staticConfiguration.Experimental != nil && staticConfiguration.Experimental.Pilot != nil &&
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staticConfiguration.Experimental.Pilot.Token != "" {
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aviator = pilot.New(staticConfiguration.Experimental.Pilot.Token, routinesPool)
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routinesPool.GoCtx(func(ctx context.Context) {
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aviator.Tick(ctx)
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})
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}
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watcher.AddListener(switchRouter(routerFactory, acmeProviders, serverEntryPointsTCP, serverEntryPointsUDP, aviator))
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watcher.AddListener(func(conf dynamic.Configuration) {
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if metricsRegistry.IsEpEnabled() || metricsRegistry.IsSvcEnabled() {
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@ -258,9 +269,12 @@ func setupServer(staticConfiguration *static.Configuration) (*server.Server, err
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return server.NewServer(routinesPool, serverEntryPointsTCP, serverEntryPointsUDP, watcher, chainBuilder, accessLog), nil
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}
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func switchRouter(routerFactory *server.RouterFactory, acmeProviders []*acme.Provider, serverEntryPointsTCP server.TCPEntryPoints, serverEntryPointsUDP server.UDPEntryPoints) func(conf dynamic.Configuration) {
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func switchRouter(routerFactory *server.RouterFactory, acmeProviders []*acme.Provider, serverEntryPointsTCP server.TCPEntryPoints, serverEntryPointsUDP server.UDPEntryPoints, aviator *pilot.Pilot) func(conf dynamic.Configuration) {
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return func(conf dynamic.Configuration) {
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routers, udpRouters := routerFactory.CreateRouters(conf)
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rtConf := runtime.NewConfig(conf)
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routers, udpRouters := routerFactory.CreateRouters(rtConf)
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for entryPointName, rt := range routers {
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for _, p := range acmeProviders {
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if p != nil && p.HTTPChallenge != nil && p.HTTPChallenge.EntryPoint == entryPointName {
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@ -269,6 +283,11 @@ func switchRouter(routerFactory *server.RouterFactory, acmeProviders []*acme.Pro
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}
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}
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}
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if aviator != nil {
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aviator.SetRuntimeConfiguration(rtConf)
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}
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serverEntryPointsTCP.Switch(routers)
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serverEntryPointsUDP.Switch(udpRouters)
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}
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@ -70,6 +70,18 @@ type Configuration struct {
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HostResolver *types.HostResolverConfig `description:"Enable CNAME Flattening." json:"hostResolver,omitempty" toml:"hostResolver,omitempty" yaml:"hostResolver,omitempty" label:"allowEmpty" file:"allowEmpty" export:"true"`
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CertificatesResolvers map[string]CertificateResolver `description:"Certificates resolvers configuration." json:"certificatesResolvers,omitempty" toml:"certificatesResolvers,omitempty" yaml:"certificatesResolvers,omitempty" export:"true"`
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Experimental *Experimental `description:"experimental features." json:"experimental,omitempty" toml:"experimental,omitempty" yaml:"experimental,omitempty"`
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}
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// Experimental the experimental feature configuration.
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type Experimental struct {
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Pilot *PilotConfiguration `description:"Pilot configuration." json:"pilot,omitempty" toml:"pilot,omitempty" yaml:"pilot,omitempty" export:"true"`
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}
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// PilotConfiguration holds pilot configuration.
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type PilotConfiguration struct {
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Token string `description:"Pilot token." json:"token,omitempty" toml:"token,omitempty" yaml:"token,omitempty" export:"true"`
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}
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// CertificateResolver contains the configuration for the different types of certificates resolver.
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246
pkg/pilot/pilot.go
Normal file
246
pkg/pilot/pilot.go
Normal file
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@ -0,0 +1,246 @@
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package pilot
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import (
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"bytes"
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"context"
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"encoding/json"
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"fmt"
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"io/ioutil"
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"net/http"
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"time"
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"github.com/cenkalti/backoff/v4"
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"github.com/containous/traefik/v2/pkg/config/runtime"
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"github.com/containous/traefik/v2/pkg/log"
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"github.com/containous/traefik/v2/pkg/safe"
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"github.com/containous/traefik/v2/pkg/version"
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)
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const baseURL = "https://instance-info.pilot.traefik.io/public"
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const tokenHeader = "X-Token"
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const (
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pilotTimer = 5 * time.Minute
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maxElapsedTime = 4 * time.Minute
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)
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// RunTimeRepresentation is the configuration information exposed by the API handler.
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type RunTimeRepresentation struct {
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Routers map[string]*runtime.RouterInfo `json:"routers,omitempty"`
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Middlewares map[string]*runtime.MiddlewareInfo `json:"middlewares,omitempty"`
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Services map[string]*serviceInfoRepresentation `json:"services,omitempty"`
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TCPRouters map[string]*runtime.TCPRouterInfo `json:"tcpRouters,omitempty"`
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TCPServices map[string]*runtime.TCPServiceInfo `json:"tcpServices,omitempty"`
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UDPRouters map[string]*runtime.UDPRouterInfo `json:"udpRouters,omitempty"`
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UDPServices map[string]*runtime.UDPServiceInfo `json:"udpServices,omitempty"`
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}
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type serviceInfoRepresentation struct {
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*runtime.ServiceInfo
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ServerStatus map[string]string `json:"serverStatus,omitempty"`
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}
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type instanceInfo struct {
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ID string `json:"id,omitempty"`
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Configuration RunTimeRepresentation `json:"configuration,omitempty"`
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}
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// New creates a new Pilot.
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func New(token string, pool *safe.Pool) *Pilot {
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return &Pilot{
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rtConfChan: make(chan *runtime.Configuration),
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client: &client{
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token: token,
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httpClient: &http.Client{Timeout: 5 * time.Second},
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baseURL: baseURL,
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},
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routinesPool: pool,
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}
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}
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// Pilot connector with Pilot.
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type Pilot struct {
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routinesPool *safe.Pool
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client *client
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rtConf *runtime.Configuration
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rtConfChan chan *runtime.Configuration
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}
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// SetRuntimeConfiguration stores the runtime configuration.
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func (p *Pilot) SetRuntimeConfiguration(rtConf *runtime.Configuration) {
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p.rtConfChan <- rtConf
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}
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func (p *Pilot) getRepresentation() RunTimeRepresentation {
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if p.rtConf == nil {
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return RunTimeRepresentation{}
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}
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siRepr := make(map[string]*serviceInfoRepresentation, len(p.rtConf.Services))
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for k, v := range p.rtConf.Services {
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siRepr[k] = &serviceInfoRepresentation{
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ServiceInfo: v,
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ServerStatus: v.GetAllStatus(),
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}
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}
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result := RunTimeRepresentation{
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Routers: p.rtConf.Routers,
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Middlewares: p.rtConf.Middlewares,
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Services: siRepr,
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TCPRouters: p.rtConf.TCPRouters,
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TCPServices: p.rtConf.TCPServices,
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UDPRouters: p.rtConf.UDPRouters,
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UDPServices: p.rtConf.UDPServices,
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}
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return result
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}
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func (p *Pilot) sendData(ctx context.Context, conf RunTimeRepresentation) {
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err := p.client.SendData(ctx, conf)
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if err != nil {
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log.WithoutContext().Error(err)
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}
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}
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// Tick sends data periodically.
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func (p *Pilot) Tick(ctx context.Context) {
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select {
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case rtConf := <-p.rtConfChan:
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p.rtConf = rtConf
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break
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case <-ctx.Done():
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return
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}
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conf := p.getRepresentation()
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p.routinesPool.GoCtx(func(ctxRt context.Context) {
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p.sendData(ctxRt, conf)
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})
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ticker := time.NewTicker(pilotTimer)
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for {
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select {
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case tick := <-ticker.C:
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log.WithoutContext().Debugf("Send to pilot: %s", tick)
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conf := p.getRepresentation()
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p.routinesPool.GoCtx(func(ctxRt context.Context) {
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p.sendData(ctxRt, conf)
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})
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case rtConf := <-p.rtConfChan:
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p.rtConf = rtConf
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case <-ctx.Done():
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return
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}
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}
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}
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type client struct {
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httpClient *http.Client
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baseURL string
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token string
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uuid string
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}
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func (c *client) createUUID() (string, error) {
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data := []byte(`{"version":"` + version.Version + `","codeName":"` + version.Codename + `"}`)
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req, err := http.NewRequest(http.MethodPost, c.baseURL+"/", bytes.NewBuffer(data))
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if err != nil {
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return "", fmt.Errorf("failed to create request: %w", err)
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}
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req.Header.Set("Content-Type", "application/json")
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req.Header.Set(tokenHeader, c.token)
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resp, err := c.httpClient.Do(req)
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if err != nil {
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return "", fmt.Errorf("failed call Pilot: %w", err)
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}
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defer resp.Body.Close()
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body, err := ioutil.ReadAll(resp.Body)
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if err != nil {
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return "", fmt.Errorf("failed read response body: %w", err)
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}
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if resp.StatusCode/100 != 2 {
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return "", fmt.Errorf("wrong status code while sending configuration: %d: %s", resp.StatusCode, body)
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}
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created := instanceInfo{}
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err = json.Unmarshal(body, &created)
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if err != nil {
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return "", fmt.Errorf("failed to unmarshal response body: %w", err)
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}
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return created.ID, nil
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}
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// SendData sends data to Pilot.
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func (c *client) SendData(ctx context.Context, rtConf RunTimeRepresentation) error {
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exponentialBackOff := backoff.NewExponentialBackOff()
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exponentialBackOff.MaxElapsedTime = maxElapsedTime
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return backoff.RetryNotify(
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func() error {
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return c.sendData(rtConf)
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},
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backoff.WithContext(exponentialBackOff, ctx),
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func(err error, duration time.Duration) {
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log.WithoutContext().Errorf("retry in %s due to: %v ", duration, err)
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})
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}
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func (c *client) sendData(_ RunTimeRepresentation) error {
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if len(c.uuid) == 0 {
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var err error
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c.uuid, err = c.createUUID()
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if err != nil {
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return fmt.Errorf("failed to create UUID: %w", err)
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}
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version.UUID = c.uuid
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}
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info := instanceInfo{
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ID: c.uuid,
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}
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b, err := json.Marshal(info)
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if err != nil {
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return fmt.Errorf("failed to marshall request body: %w", err)
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}
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request, err := http.NewRequest(http.MethodPost, c.baseURL+"/command", bytes.NewBuffer(b))
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if err != nil {
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return fmt.Errorf("failed to create request: %w", err)
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}
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request.Header.Set("Content-Type", "application/json")
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request.Header.Set(tokenHeader, c.token)
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resp, err := c.httpClient.Do(request)
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if err != nil {
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return fmt.Errorf("failed to call Pilot: %w", err)
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}
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defer resp.Body.Close()
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body, err := ioutil.ReadAll(resp.Body)
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if err != nil {
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return fmt.Errorf("failed to read response body: %w", err)
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}
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if resp.StatusCode != http.StatusOK {
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return fmt.Errorf("wrong status code while sending configuration: %d: %s", resp.StatusCode, body)
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}
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return nil
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}
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123
pkg/pilot/pilot_test.go
Normal file
123
pkg/pilot/pilot_test.go
Normal file
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@ -0,0 +1,123 @@
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package pilot
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import (
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"context"
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"encoding/json"
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"fmt"
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"net/http"
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"net/http/httptest"
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"testing"
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"time"
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"github.com/containous/traefik/v2/pkg/config/runtime"
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"github.com/containous/traefik/v2/pkg/safe"
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"github.com/stretchr/testify/require"
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)
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func TestTick(t *testing.T) {
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receivedConfig := make(chan bool)
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mux := http.NewServeMux()
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server := httptest.NewServer(mux)
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t.Cleanup(server.Close)
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mux.HandleFunc("/", func(rw http.ResponseWriter, req *http.Request) {
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if req.Method != http.MethodPost {
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http.Error(rw, "invalid method", http.StatusMethodNotAllowed)
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return
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}
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err := json.NewEncoder(rw).Encode(instanceInfo{ID: "123"})
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if err != nil {
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http.Error(rw, err.Error(), http.StatusInternalServerError)
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return
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}
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})
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mux.HandleFunc("/command", func(rw http.ResponseWriter, req *http.Request) {
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if req.Method != http.MethodPost {
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http.Error(rw, "invalid method", http.StatusMethodNotAllowed)
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return
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}
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receivedConfig <- true
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})
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pilot := New("token", safe.NewPool(context.Background()))
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pilot.client.baseURL = server.URL
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ctx, cancel := context.WithCancel(context.Background())
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t.Cleanup(cancel)
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go pilot.Tick(ctx)
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pilot.SetRuntimeConfiguration(&runtime.Configuration{})
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pilot.SetRuntimeConfiguration(&runtime.Configuration{})
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select {
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case <-time.Tick(10 * time.Second):
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t.Fatal("Timeout")
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case <-receivedConfig:
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return
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}
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}
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func TestClient_SendConfiguration(t *testing.T) {
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myToken := "myToken"
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mux := http.NewServeMux()
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server := httptest.NewServer(mux)
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t.Cleanup(server.Close)
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mux.HandleFunc("/", func(rw http.ResponseWriter, req *http.Request) {
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if req.Method != http.MethodPost {
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http.Error(rw, "invalid method", http.StatusMethodNotAllowed)
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return
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}
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tk := req.Header.Get(tokenHeader)
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if tk != myToken {
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http.Error(rw, fmt.Sprintf("invalid token: %s", tk), http.StatusUnauthorized)
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}
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err := json.NewEncoder(rw).Encode(instanceInfo{ID: "123"})
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if err != nil {
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http.Error(rw, err.Error(), http.StatusInternalServerError)
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return
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}
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})
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mux.HandleFunc("/command", func(rw http.ResponseWriter, req *http.Request) {
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if req.Method != http.MethodPost {
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http.Error(rw, "invalid method", http.StatusMethodNotAllowed)
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return
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}
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tk := req.Header.Get(tokenHeader)
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if tk != myToken {
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http.Error(rw, fmt.Sprintf("invalid token: %s", tk), http.StatusUnauthorized)
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}
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defer req.Body.Close()
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info := &instanceInfo{}
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err := json.NewDecoder(req.Body).Decode(info)
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if err != nil {
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http.Error(rw, err.Error(), http.StatusInternalServerError)
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return
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}
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if info.ID != "123" {
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http.Error(rw, fmt.Sprintf("invalid ID: %s", info.ID), http.StatusBadRequest)
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}
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})
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client := client{
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baseURL: server.URL,
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httpClient: http.DefaultClient,
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token: myToken,
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}
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err := client.SendData(context.Background(), RunTimeRepresentation{})
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require.NoError(t, err)
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}
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@ -3,7 +3,6 @@ package server
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import (
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"context"
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"github.com/containous/traefik/v2/pkg/config/dynamic"
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"github.com/containous/traefik/v2/pkg/config/runtime"
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"github.com/containous/traefik/v2/pkg/config/static"
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"github.com/containous/traefik/v2/pkg/log"
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@ -58,11 +57,9 @@ func NewRouterFactory(staticConfiguration static.Configuration, managerFactory *
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}
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// CreateRouters creates new TCPRouters and UDPRouters.
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func (f *RouterFactory) CreateRouters(conf dynamic.Configuration) (map[string]*tcpCore.Router, map[string]udpCore.Handler) {
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func (f *RouterFactory) CreateRouters(rtConf *runtime.Configuration) (map[string]*tcpCore.Router, map[string]udpCore.Handler) {
|
||||
ctx := context.Background()
|
||||
|
||||
rtConf := runtime.NewConfig(conf)
|
||||
|
||||
// HTTP
|
||||
serviceManager := f.managerFactory.Build(rtConf)
|
||||
|
||||
|
|
|
|||
|
|
@ -6,6 +6,7 @@ import (
|
|||
"testing"
|
||||
|
||||
"github.com/containous/traefik/v2/pkg/config/dynamic"
|
||||
"github.com/containous/traefik/v2/pkg/config/runtime"
|
||||
"github.com/containous/traefik/v2/pkg/config/static"
|
||||
"github.com/containous/traefik/v2/pkg/metrics"
|
||||
"github.com/containous/traefik/v2/pkg/server/middleware"
|
||||
|
|
@ -52,7 +53,7 @@ func TestReuseService(t *testing.T) {
|
|||
|
||||
factory := NewRouterFactory(staticConfig, managerFactory, tlsManager, middleware.NewChainBuilder(staticConfig, metrics.NewVoidRegistry(), nil))
|
||||
|
||||
entryPointsHandlers, _ := factory.CreateRouters(dynamic.Configuration{HTTP: dynamicConfigs})
|
||||
entryPointsHandlers, _ := factory.CreateRouters(runtime.NewConfig(dynamic.Configuration{HTTP: dynamicConfigs}))
|
||||
|
||||
// Test that the /ok path returns a status 200.
|
||||
responseRecorderOk := &httptest.ResponseRecorder{}
|
||||
|
|
@ -186,7 +187,7 @@ func TestServerResponseEmptyBackend(t *testing.T) {
|
|||
|
||||
factory := NewRouterFactory(staticConfig, managerFactory, tlsManager, middleware.NewChainBuilder(staticConfig, metrics.NewVoidRegistry(), nil))
|
||||
|
||||
entryPointsHandlers, _ := factory.CreateRouters(dynamic.Configuration{HTTP: test.config(testServer.URL)})
|
||||
entryPointsHandlers, _ := factory.CreateRouters(runtime.NewConfig(dynamic.Configuration{HTTP: test.config(testServer.URL)}))
|
||||
|
||||
responseRecorder := &httptest.ResponseRecorder{}
|
||||
request := httptest.NewRequest(http.MethodGet, testServer.URL+requestPath, nil)
|
||||
|
|
@ -225,7 +226,7 @@ func TestInternalServices(t *testing.T) {
|
|||
|
||||
factory := NewRouterFactory(staticConfig, managerFactory, tlsManager, middleware.NewChainBuilder(staticConfig, metrics.NewVoidRegistry(), nil))
|
||||
|
||||
entryPointsHandlers, _ := factory.CreateRouters(dynamic.Configuration{HTTP: dynamicConfigs})
|
||||
entryPointsHandlers, _ := factory.CreateRouters(runtime.NewConfig(dynamic.Configuration{HTTP: dynamicConfigs}))
|
||||
|
||||
// Test that the /ok path returns a status 200.
|
||||
responseRecorderOk := &httptest.ResponseRecorder{}
|
||||
|
|
|
|||
|
|
@ -4,6 +4,7 @@ import (
|
|||
"context"
|
||||
"net/http"
|
||||
"net/url"
|
||||
"time"
|
||||
|
||||
"github.com/containous/traefik/v2/pkg/log"
|
||||
"github.com/google/go-github/v28/github"
|
||||
|
|
@ -19,6 +20,10 @@ var (
|
|||
Codename = "cheddar" // beta cheese
|
||||
// BuildDate holds the build date of traefik.
|
||||
BuildDate = "I don't remember exactly"
|
||||
// StartDate holds the start date of traefik.
|
||||
StartDate = time.Now()
|
||||
// UUID instance uuid.
|
||||
UUID string
|
||||
)
|
||||
|
||||
// Handler expose version routes.
|
||||
|
|
@ -33,11 +38,15 @@ func (v Handler) Append(router *mux.Router) {
|
|||
router.Methods(http.MethodGet).Path("/api/version").
|
||||
HandlerFunc(func(response http.ResponseWriter, request *http.Request) {
|
||||
v := struct {
|
||||
Version string
|
||||
Codename string
|
||||
Version string
|
||||
Codename string
|
||||
StartDate time.Time `json:"startDate"`
|
||||
UUID string `json:"uuid"`
|
||||
}{
|
||||
Version: Version,
|
||||
Codename: Codename,
|
||||
Version: Version,
|
||||
Codename: Codename,
|
||||
StartDate: StartDate,
|
||||
UUID: UUID,
|
||||
}
|
||||
|
||||
if err := templatesRenderer.JSON(response, http.StatusOK, v); err != nil {
|
||||
|
|
|
|||
Loading…
Reference in a new issue