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server.go
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server.go
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package server
import (
"encoding/json"
"github.com/coreos/fleet/third_party/github.com/coreos/go-etcd/etcd"
log "github.com/coreos/fleet/third_party/github.com/golang/glog"
"github.com/coreos/fleet/agent"
"github.com/coreos/fleet/config"
"github.com/coreos/fleet/engine"
"github.com/coreos/fleet/event"
"github.com/coreos/fleet/machine"
"github.com/coreos/fleet/registry"
"github.com/coreos/fleet/sign"
)
type Server struct {
agent *agent.Agent
engine *engine.Engine
machine *machine.Machine
registry *registry.Registry
eventBus *event.EventBus
eventStream *registry.EventStream
}
func New(cfg config.Config) *Server {
m := machine.New(cfg.BootID, cfg.PublicIP, cfg.Metadata())
m.RefreshState()
regClient := etcd.NewClient(cfg.EtcdServers)
regClient.SetConsistency(etcd.STRONG_CONSISTENCY)
r := registry.New(regClient)
eb := event.NewEventBus()
eb.Listen()
eventClient := etcd.NewClient(cfg.EtcdServers)
eventClient.SetConsistency(etcd.STRONG_CONSISTENCY)
es := registry.NewEventStream(eventClient, r)
var verifier *sign.SignatureVerifier
if cfg.VerifyUnits {
var err error
verifier, err = sign.NewSignatureVerifierFromAuthorizedKeysFile(cfg.AuthorizedKeysFile)
if err != nil {
log.Errorln("Failed to get any key from authorized key file in verify_units mode:", err)
verifier = sign.NewSignatureVerifier()
}
}
a, err := agent.New(r, eb, m, cfg.AgentTTL, cfg.UnitPrefix, verifier)
if err != nil {
//TODO: return this as an error object rather than panicking
panic(err)
}
e := engine.New(r, eb, m)
return &Server{a, e, m, r, eb, es}
}
func (self *Server) MarshalJSON() ([]byte, error) {
return json.Marshal(struct{ Agent *agent.Agent }{Agent: self.agent})
}
func (self *Server) Run() {
// Block on the agent being able to publish its
// presence and bootstrap its cache
idx := self.agent.Initialize()
go self.agent.Run()
go self.engine.Run()
go self.eventBus.Listen()
go self.eventStream.Stream(idx, self.eventBus.Channel)
}
func (self *Server) Stop() {
self.agent.Stop()
self.engine.Stop()
self.eventStream.Close()
self.eventBus.Stop()
}
func (self *Server) Purge() {
self.agent.Purge()
}