func Ambassador(ctx *cli.Context) {
var (
addr = ctx.String("addr")
proxycfg = ctx.String("proxycfg")
localproxycfg = proxy.ConfigKey()
proxyTargets = ctx.StringSlice("proxy")
stop = make(chan struct{}, 1)
)
// setup register path for discovery
disc.RegisterPath = path.Join(ctx.String("cluster"), proxy.DiscoveryPath)
// setup Discovery URI from config
proxy.DiscoveryURI()
if err := dcli.Before(ctx); err != nil { // We don't want to setup discovery
if err == dcli.ErrRequireDiscovery {
log.WithFields(log.Fields{"err": err}).Warning("discovery feature disabled")
} else {
log.WithFields(log.Fields{"err": err}).Fatal("halt")
}
} else { // We had successfully setup discovery
if localproxycfg != "" {
proxy.ProxyConfigKey = localproxycfg
} else if proxycfg != "" {
proxy.ProxyConfigKey = proxycfg
}
if proxyTargets != nil {
proxy.Targets = proxyTargets
}
proxy.EnableDiscoveryProxy = ctx.Bool("proxy2discovery")
proxy.Follow()
}
if addr != "" {
log.WithFields(log.Fields{"addr": addr}).Info("API endpoint begin")
web.RunAPIEndpoint(addr, stop)
} else {
log.Warning("API endpoint disabled")
}
<-stop // we should never reach here
// TODO: we should gracefully shutdown proxied connections
}
func Monitor(ctx *cli.Context) {
var (
addr = ctx.String("addr")
idle = ctx.Bool("idle")
stop = make(chan struct{}, 1)
)
// setup register path for discovery
disc.RegisterPath = path.Join(ctx.String("cluster"), DiscoveryPath)
if err := dcli.Before(ctx); err != nil {
if err == dcli.ErrRequireDiscovery {
log.WithFields(log.Fields{"err": err}).Warning("discovery feature disabled")
} else {
log.WithFields(log.Fields{"err": err}).Fatal("halt")
}
}
if err := scli.Before(ctx); err != nil {
log.Error(err)
os.Exit(1)
}
// setup service upkeep
up.Init(ctx.Bool("persist"), scli.DefaultSlack)
if addr != "" {
log.WithFields(log.Fields{"addr": addr}).Info("API endpoint begin")
go web.RunAPIEndpoint(addr, stop)
} else {
log.Warning("API endpoint disabled")
}
if !idle {
log.Info("Track container life cycle")
go dkr.RunDockerEvent(stop)
} else {
log.Warning("docker event endpoint disabled")
}
if addr != "" || !idle {
<-stop // we should never reach pass this point
} else {
log.Warning("nothing to do; quit now")
}
}