homelab/traefik
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libkv support https://github.com/EmileVauge/traefik/issues/25 https://github.com/EmileVauge/traefik/issues/9

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This commit is contained in:
emile 2015-10-01 12:04:25 +02:00
parent cdcd5a2b68
commit 93b5410987
20 changed files with 346 additions and 248 deletions
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40
traefik.go
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@ -12,9 +12,11 @@ import (
"syscall"
"time"
"errors"
"github.com/BurntSushi/toml"
log "github.com/Sirupsen/logrus"
"github.com/codegangsta/negroni"
"github.com/davecgh/go-spew/spew"
"github.com/emilevauge/traefik/middlewares"
"github.com/gorilla/mux"
"github.com/mailgun/manners"
@ -86,7 +88,7 @@ func main() {
} else {
log.SetFormatter(&log.TextFormatter{FullTimestamp: true, DisableSorting: true})
}
log.Debugf("Global configuration loaded %s", spew.Sdump(globalConfiguration))
configurationRouter = LoadDefaultConfig(globalConfiguration)
// listen new configurations from providers
@ -94,7 +96,8 @@ func main() {
for {
configMsg := <-configurationChan
log.Infof("Configuration receveived from provider %v: %+v", configMsg.providerName, configMsg.configuration)
log.Infof("Configuration receveived from provider %s: %#v", configMsg.providerName, configMsg.configuration)
log.Debugf("Configuration %s", spew.Sdump(configMsg.configuration))
if configMsg.configuration == nil {
log.Info("Skipping empty configuration")
} else if reflect.DeepEqual(currentConfigurations[configMsg.providerName], configMsg.configuration) {
@ -147,13 +150,25 @@ func main() {
if globalConfiguration.Consul != nil {
providers = append(providers, globalConfiguration.Consul)
}
if globalConfiguration.Etcd != nil {
providers = append(providers, globalConfiguration.Etcd)
}
if globalConfiguration.Zookeeper != nil {
providers = append(providers, globalConfiguration.Zookeeper)
}
if globalConfiguration.Boltdb != nil {
providers = append(providers, globalConfiguration.Boltdb)
}
// start providers
for _, provider := range providers {
log.Infof("Starting provider %v %+v", reflect.TypeOf(provider), provider)
currentProvider := provider
go func() {
currentProvider.Provide(configurationChan)
err := currentProvider.Provide(configurationChan)
if err != nil {
log.Errorf("Error starting provider %s", err)
}
}()
}
@ -176,6 +191,7 @@ func main() {
func startServer(srv *manners.GracefulServer, globalConfiguration *GlobalConfiguration) {
log.Info("Starting server")
log.Debugf("Server %s", spew.Sdump(srv))
if len(globalConfiguration.CertFile) > 0 && len(globalConfiguration.KeyFile) > 0 {
err := srv.ListenAndServeTLS(globalConfiguration.CertFile, globalConfiguration.KeyFile)
if err != nil {
@ -243,13 +259,16 @@ func LoadConfig(configurations configs, globalConfiguration *GlobalConfiguration
log.Debugf("Creating backend %s", frontend.Backend)
var lb http.Handler
rr, _ := roundrobin.New(fwd)
if configuration.Backends[frontend.Backend] == nil {
return nil, errors.New("Backend not found: " + frontend.Backend)
}
lbMethod, err := NewLoadBalancerMethod(configuration.Backends[frontend.Backend].LoadBalancer)
if err != nil {
configuration.Backends[frontend.Backend].LoadBalancer = &LoadBalancer{Method: "wrr"}
}
switch lbMethod {
case drr:
log.Debugf("Creating load-balancer drr")
log.Infof("Creating load-balancer drr")
rebalancer, _ := roundrobin.NewRebalancer(rr, roundrobin.RebalancerLogger(oxyLogger))
lb = rebalancer
for serverName, server := range configuration.Backends[frontend.Backend].Servers {
@ -257,31 +276,31 @@ func LoadConfig(configurations configs, globalConfiguration *GlobalConfiguration
if err != nil {
return nil, err
}
log.Debugf("Creating server %s %s", serverName, url.String())
log.Infof("Creating server %s %s", serverName, url.String())
rebalancer.UpsertServer(url, roundrobin.Weight(server.Weight))
}
case wrr:
log.Debugf("Creating load-balancer wrr")
log.Infof("Creating load-balancer wrr")
lb = rr
for serverName, server := range configuration.Backends[frontend.Backend].Servers {
url, err := url.Parse(server.URL)
if err != nil {
return nil, err
}
log.Debugf("Creating server %s %s", serverName, url.String())
log.Infof("Creating server %s %s", serverName, url.String())
rr.UpsertServer(url, roundrobin.Weight(server.Weight))
}
}
var negroni = negroni.New()
if configuration.Backends[frontend.Backend].CircuitBreaker != nil {
log.Debugf("Creating circuit breaker %s", configuration.Backends[frontend.Backend].CircuitBreaker.Expression)
log.Infof("Creating circuit breaker %s", configuration.Backends[frontend.Backend].CircuitBreaker.Expression)
negroni.Use(middlewares.NewCircuitBreaker(lb, configuration.Backends[frontend.Backend].CircuitBreaker.Expression, cbreaker.Logger(oxyLogger)))
} else {
negroni.UseHandler(lb)
}
backends[frontend.Backend] = negroni
} else {
log.Debugf("Reusing backend %s", frontend.Backend)
log.Infof("Reusing backend %s", frontend.Backend)
}
// stream.New(backends[frontend.Backend], stream.Retry("IsNetworkError() && Attempts() <= " + strconv.Itoa(globalConfiguration.Replay)), stream.Logger(oxyLogger))
@ -306,8 +325,7 @@ func Invoke(any interface{}, name string, args ...interface{}) []reflect.Value {
func LoadFileConfig(file string) *GlobalConfiguration {
configuration := NewGlobalConfiguration()
if _, err := toml.DecodeFile(file, configuration); err != nil {
log.Fatal("Error reading file ", err)
fmtlog.Fatalf("Error reading file: %s", err)
}
log.Debugf("Global configuration loaded %+v", configuration)
return configuration
}