func (s *ResumerSuite) TestRunStopWithState(c *gc.C) {
// Test with state ensures that state fulfills the
// TransactionResumer interface.
rr := resumer.NewResumer(s.State)
c.Assert(rr.Stop(), gc.IsNil)
}
func (s *ResumerSuite) TestResumerCalls(c *gc.C) {
// Shorter interval and mock help to count
// the resumer calls in a given timespan.
testInterval := 10 * time.Millisecond
resumer.SetInterval(testInterval)
defer resumer.RestoreInterval()
tr := &transactionResumerMock{[]time.Time{}}
rr := resumer.NewResumer(tr)
defer func() { c.Assert(rr.Stop(), gc.IsNil) }()
time.Sleep(10 * testInterval)
// Check that a numner of calls has happened with a time
// difference somewhere between the interval and twice the
// interval. A more precise time behavior cannot be
// specified due to the load during the test.
c.Assert(len(tr.timestamps) > 0, gc.Equals, true)
for i := 1; i < len(tr.timestamps); i++ {
diff := tr.timestamps[i].Sub(tr.timestamps[i-1])
c.Assert(diff >= testInterval, gc.Equals, true)
c.Assert(diff <= 4*testInterval, gc.Equals, true)
}
}
// 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
}