func StopAgentOf(da *model.DesiredAgent, lastRunUser, lastWorkDir string) error {
agentDir := path.Join(lastWorkDir, da.Name)
version := ReadVersion(lastRunUser, agentDir)
if "" == version {
version = da.Version
}
if version == da.Version && da.RunUser == lastRunUser && da.WorkDir == lastWorkDir {
// do nothing
return nil
}
versionDir := path.Join(agentDir, version)
if !CheckDirectoryExists(lastRunUser, versionDir) {
logger.Warn("user: %s, %s nonexistent", lastRunUser, versionDir)
return nil
}
err := ControlStopIn(lastRunUser, versionDir)
if nil != err {
return err
}
cmd := BuildCommand(lastRunUser, "rm", "-rf", versionDir)
cmd.Dir = file.SelfDir()
_, err = ExecuteCommandWithOutput(cmd)
return err
}
func (t *RingBackend) LoadAddrs(f string) error {
if !file.IsExist(f) {
return errors.New("backends file is not exist")
}
file_content, err := file.ToString(f)
if err != nil {
return err
}
file_content = strings.Trim(file_content, " \n\t")
lines := strings.Split(file_content, "\n")
if len(lines) == 0 {
return errors.New("empty backends")
}
tmp_addrs := make(map[string][]string)
for _, line := range lines {
fields := strings.Fields(line)
size := len(fields)
if size < 2 {
logger.Warn("invalid backend %s", line)
continue
}
name := fields[0]
addr := fields[1:size]
tmp_addrs[name] = addr
}
t.Lock()
defer t.Unlock()
t.Addrs = tmp_addrs
return nil
}
func ReadVersion(username, agentDir string) string {
versionFile := path.Join(agentDir, ".version")
cmd := BuildCommand(username, "sh", "read_file.sh", versionFile)
cmd.Dir = file.SelfDir()
version, err := ExecuteCommandWithOutput(cmd)
if err != nil {
logger.Warn("%s is nonexistent,error: %v", versionFile, err)
return ""
}
return version
}