func (p *dockerProvisioner) LogsEnabled(app provision.App) (bool, string, error) {
const (
logBackendsEnv = "LOG_BACKENDS"
logDocKeyFormat = "LOG_%s_DOC"
tsuruLogBackendName = "tsuru"
)
logConf := container.DockerLog{}
isBS, err := logConf.IsBS(app.GetPool())
if err != nil {
return false, "", err
}
if !isBS {
driver, _, _ := logConf.LogOpts(app.GetPool())
msg := fmt.Sprintf("Logs not available through tsuru. Enabled log driver is %q.", driver)
return false, msg, nil
}
config, err := bs.LoadConfig([]string{app.GetPool()})
if err != nil {
return false, "", err
}
enabledBackends := config.PoolEntry(app.GetPool(), logBackendsEnv)
if enabledBackends == "" {
return true, "", nil
}
backendsList := strings.Split(enabledBackends, ",")
for i := range backendsList {
backendsList[i] = strings.TrimSpace(backendsList[i])
if backendsList[i] == tsuruLogBackendName {
return true, "", nil
}
}
var docs []string
for _, backendName := range backendsList {
keyName := fmt.Sprintf(logDocKeyFormat, strings.ToUpper(backendName))
backendDoc := config.PoolEntry(app.GetPool(), keyName)
var docLine string
if backendDoc == "" {
docLine = fmt.Sprintf("* %s", backendName)
} else {
docLine = fmt.Sprintf("* %s: %s", backendName, backendDoc)
}
docs = append(docs, docLine)
}
fullDoc := fmt.Sprintf("Logs not available through tsuru. Enabled log backends are:\n%s",
strings.Join(docs, "\n"))
return false, fullDoc, nil
}
