func (s *CleanerSuite) TestCleaner(c *gc.C) {
cr := cleaner.NewCleaner(s.State)
defer func() { c.Assert(worker.Stop(cr), gc.IsNil) }()
needed, err := s.State.NeedsCleanup()
c.Assert(err, gc.IsNil)
c.Assert(needed, gc.Equals, false)
s.AddTestingService(c, "wordpress", s.AddTestingCharm(c, "wordpress"))
s.AddTestingService(c, "mysql", s.AddTestingCharm(c, "mysql"))
eps, err := s.State.InferEndpoints([]string{"wordpress", "mysql"})
c.Assert(err, gc.IsNil)
relM, err := s.State.AddRelation(eps...)
c.Assert(err, gc.IsNil)
needed, err = s.State.NeedsCleanup()
c.Assert(err, gc.IsNil)
c.Assert(needed, gc.Equals, false)
// Observe destroying of the relation with a watcher.
cw := s.State.WatchCleanups()
defer func() { c.Assert(cw.Stop(), gc.IsNil) }()
err = relM.Destroy()
c.Assert(err, gc.IsNil)
timeout := time.After(coretesting.LongWait)
for {
s.State.StartSync()
select {
case <-time.After(coretesting.ShortWait):
continue
case <-timeout:
c.Fatalf("timed out waiting for cleanup")
case <-cw.Changes():
needed, err = s.State.NeedsCleanup()
c.Assert(err, gc.IsNil)
if needed {
continue
}
}
break
}
}
// StateWorker returns a worker running all the workers that require
// a *state.State connection.
func (a *MachineAgent) StateWorker() (worker.Worker, error) {
agentConfig := a.CurrentConfig()
// Create system-identity file
if err := agent.WriteSystemIdentityFile(agentConfig); err != nil {
return nil, err
}
// Start MondoDB server
if err := a.ensureMongoServer(agentConfig); err != nil {
return nil, err
}
st, m, err := openState(agentConfig)
if err != nil {
return nil, err
}
reportOpenedState(st)
singularStateConn := singularStateConn{st.MongoSession(), m}
runner := newRunner(connectionIsFatal(st), moreImportant)
singularRunner, err := newSingularRunner(runner, singularStateConn)
if err != nil {
return nil, fmt.Errorf("cannot make singular State Runner: %v", err)
}
// Take advantage of special knowledge here in that we will only ever want
// the storage provider on one machine, and that is the "bootstrap" node.
providerType := agentConfig.Value(agent.ProviderType)
if (providerType == provider.Local || provider.IsManual(providerType)) && m.Id() == bootstrapMachineId {
a.startWorkerAfterUpgrade(runner, "local-storage", func() (worker.Worker, error) {
// TODO(axw) 2013-09-24 bug #1229507
// Make another job to enable storage.
// There's nothing special about this.
return localstorage.NewWorker(agentConfig), nil
})
}
for _, job := range m.Jobs() {
switch job {
case state.JobHostUnits:
// Implemented in APIWorker.
case state.JobManageEnviron:
useMultipleCPUs()
a.startWorkerAfterUpgrade(runner, "instancepoller", func() (worker.Worker, error) {
return instancepoller.NewWorker(st), nil
})
runner.StartWorker("peergrouper", func() (worker.Worker, error) {
return peergrouperNew(st)
})
runner.StartWorker("apiserver", func() (worker.Worker, error) {
// If the configuration does not have the required information,
// it is currently not a recoverable error, so we kill the whole
// agent, potentially enabling human intervention to fix
// the agent's configuration file. In the future, we may retrieve
// the state server certificate and key from the state, and
// this should then change.
info, ok := agentConfig.StateServingInfo()
if !ok {
return nil, &fatalError{"StateServingInfo not available and we need it"}
}
port := info.APIPort
cert := []byte(info.Cert)
key := []byte(info.PrivateKey)
if len(cert) == 0 || len(key) == 0 {
return nil, &fatalError{"configuration does not have state server cert/key"}
}
dataDir := agentConfig.DataDir()
logDir := agentConfig.LogDir()
return apiserver.NewServer(
st, fmt.Sprintf(":%d", port), cert, key, dataDir, logDir)
})
a.startWorkerAfterUpgrade(singularRunner, "cleaner", func() (worker.Worker, error) {
return cleaner.NewCleaner(st), nil
})
a.startWorkerAfterUpgrade(singularRunner, "resumer", func() (worker.Worker, error) {
// The action of resumer is so subtle that it is not tested,
// because we can't figure out how to do so without brutalising
// the transaction log.
return resumer.NewResumer(st), nil
})
a.startWorkerAfterUpgrade(singularRunner, "minunitsworker", func() (worker.Worker, error) {
return minunitsworker.NewMinUnitsWorker(st), nil
})
case state.JobManageStateDeprecated:
// Legacy environments may set this, but we ignore it.
default:
logger.Warningf("ignoring unknown job %q", job)
}
}
return newCloseWorker(runner, st), nil
}