// testNamespace starts a worker and ensures that
// the rsyslog config file has the expected filename,
// and the appropriate log dir is used.
func (s *RsyslogSuite) testNamespace(c *gc.C, st *api.State, tag, namespace, expectedFilename, expectedLogDir string) {
restarted := make(chan struct{}, 2) // once for create, once for teardown
s.PatchValue(rsyslog.RestartRsyslog, func() error {
restarted <- struct{}{}
return nil
})
err := os.MkdirAll(expectedLogDir, 0755)
c.Assert(err, gc.IsNil)
worker, err := rsyslog.NewRsyslogConfigWorker(st.Rsyslog(), rsyslog.RsyslogModeForwarding, tag, namespace, []string{"0.1.2.3"})
c.Assert(err, gc.IsNil)
defer func() { c.Assert(worker.Wait(), gc.IsNil) }()
defer worker.Kill()
// change the API HostPorts to trigger an rsyslog restart
newHostPorts := network.AddressesWithPort(network.NewAddresses("127.0.0.1"), 6541)
err = s.State.SetAPIHostPorts([][]network.HostPort{newHostPorts})
c.Assert(err, gc.IsNil)
// Wait for rsyslog to be restarted, so we can check to see
// what the name of the config file is.
waitForRestart(c, restarted)
// Ensure that ca-cert.pem gets written to the expected log dir.
waitForFile(c, filepath.Join(expectedLogDir, "ca-cert.pem"))
dir, err := os.Open(*rsyslog.RsyslogConfDir)
c.Assert(err, gc.IsNil)
names, err := dir.Readdirnames(-1)
dir.Close()
c.Assert(err, gc.IsNil)
c.Assert(names, gc.HasLen, 1)
c.Assert(names[0], gc.Equals, expectedFilename)
}