func updateRuntimeConfiguration(respBody *graylog.ResponseCollectorRegistration, ctx *context.Ctx) error {
// API query interval
if ctx.UserConfig.UpdateInterval != respBody.Configuration.UpdateInterval &&
respBody.Configuration.UpdateInterval > 0 &&
respBody.ConfigurationOverride == true {
log.Infof("[ConfigurationUpdate] update_interval: %ds", respBody.Configuration.UpdateInterval)
ctx.UserConfig.UpdateInterval = respBody.Configuration.UpdateInterval
configurationOverride = true
}
// Send host status
if ctx.UserConfig.SendStatus != respBody.Configuration.SendStatus &&
respBody.ConfigurationOverride == true {
log.Infof("[ConfigurationUpdate] send_status: %v", respBody.Configuration.SendStatus)
ctx.UserConfig.SendStatus = respBody.Configuration.SendStatus
configurationOverride = true
}
// Reset server overrides
if respBody.ConfigurationOverride == false && configurationOverride == true {
configFile := cfgfile.SidecarConfig{}
err := cfgfile.Read(&configFile, "")
if err != nil {
log.Errorf("[ConfigurationUpdate] Failed to load default values from configuration file. Continuing with current values. %v", err)
return err
} else {
log.Infof("[ConfigurationUpdate] Resetting update_interval: %ds", configFile.UpdateInterval)
ctx.UserConfig.UpdateInterval = configFile.UpdateInterval
log.Infof("[ConfigurationUpdate] Resetting send_status: %v", configFile.SendStatus)
ctx.UserConfig.SendStatus = configFile.SendStatus
configurationOverride = false
}
}
return nil
}
func (ctx *Ctx) LoadConfig(path *string) error {
err := cfgfile.Read(&ctx.UserConfig, *path)
if err != nil {
return fmt.Errorf("loading config file error: %v\n", err)
}
// Process top-level configuration
// server_url
ctx.ServerUrl, err = url.Parse(ctx.UserConfig.ServerUrl)
if err != nil || ctx.ServerUrl.Scheme == "" || ctx.ServerUrl.Host == "" {
log.Fatal("Server-url is not valid. Should be like http://127.0.0.1:9000/api/ ", err)
}
if ctx.UserConfig.ServerUrl == "" {
log.Fatalf("Server-url is empty.")
}
// collector_id
if ctx.UserConfig.CollectorId == "" {
log.Fatal("No collector ID was configured.")
}
ctx.CollectorId = common.GetCollectorId(ctx.UserConfig.CollectorId)
// node_id
if ctx.UserConfig.NodeId == "" {
log.Info("No node-id was configured, falling back to hostname")
ctx.UserConfig.NodeId, err = common.GetHostname()
if err != nil {
log.Fatal("No node-id configured and not able to obtain hostname as alternative.")
}
}
// tags
if len(ctx.UserConfig.Tags) == 0 {
log.Fatal("Please define configuration tags.")
} else {
log.Info("Fetching configurations tagged by: ", ctx.UserConfig.Tags)
}
// cache_path
if ctx.UserConfig.CachePath == "" {
var cachePath string
if runtime.GOOS == "windows" {
cachePath = filepath.Join(os.Getenv("SystemDrive")+"\\", "Program Files", "graylog", "collector-sidecar", "cache")
} else {
cachePath = filepath.Join("/var", "cache", "graylog", "collector-sidecar")
}
ctx.UserConfig.CachePath = cachePath
log.Errorf("No cache directory was configured. Using default: %s", cachePath)
}
// log_path
if ctx.UserConfig.LogPath == "" {
log.Fatal("No log directory was configured.")
}
// log_rotation_time
if !(ctx.UserConfig.LogRotationTime > 0) {
log.Fatal("Please set the log rotation time > 0 seconds.")
}
// log_max_age
if !(ctx.UserConfig.LogMaxAge > 0) {
log.Fatal("Please set the maximum age of log file rotation > 0 seconds.")
}
// list log files
if len(ctx.UserConfig.ListLogFiles) > 0 {
for _, dir := range ctx.UserConfig.ListLogFiles {
if !common.IsDir(dir) {
log.Fatal("Please provide a list of directories for list_log_files.")
}
}
}
// update_interval
if !(ctx.UserConfig.UpdateInterval > 0) {
log.Fatal("Please set update interval > 0 seconds.")
}
// backends
if len(ctx.UserConfig.Backends) == 0 {
log.Fatal("Please define at least one collector backend.")
}
return nil
}
func (ctx *Ctx) LoadConfig(path *string) error {
err := cfgfile.Read(&ctx.UserConfig, *path)
if err != nil {
return fmt.Errorf("loading config file error: %v\n", err)
}
// Process top-level configuration
// server_url
ctx.ServerUrl, err = url.Parse(ctx.UserConfig.ServerUrl)
if err != nil || ctx.ServerUrl.Scheme == "" || ctx.ServerUrl.Host == "" {
log.Fatal("Server-url is not valid. Should be like http://127.0.0.1:12900 ", err)
}
if ctx.UserConfig.ServerUrl == "" {
log.Fatalf("Server-url is empty.")
}
// collector_id
if ctx.UserConfig.CollectorId == "" {
log.Fatal("No collector ID was configured.")
}
ctx.CollectorId = common.GetCollectorId(ctx.UserConfig.CollectorId)
// node_id
if ctx.UserConfig.NodeId == "" {
log.Info("No node-id was configured, falling back to hostname")
ctx.UserConfig.NodeId, err = common.GetHostname()
if err != nil {
log.Fatal("No node-id configured and not able to obtain hostname as alternative.")
}
}
// tags
if len(ctx.UserConfig.Tags) == 0 {
log.Fatal("Please define configuration tags.")
} else {
log.Info("Fetching configurations tagged by: ", ctx.UserConfig.Tags)
}
// log_path
if ctx.UserConfig.LogPath == "" {
log.Fatal("No log directory was configured.")
}
// log_rotation_time
if !(ctx.UserConfig.LogRotationTime > 0) {
log.Fatal("Please set the log rotation time > 0 seconds.")
}
// log_max_age
if !(ctx.UserConfig.LogMaxAge > 0) {
log.Fatal("Please set the maximum age of log file rotation > 0 seconds.")
}
// update_interval
if !(ctx.UserConfig.UpdateInterval > 0) {
log.Fatal("Please set update interval > 0 seconds.")
}
// backends
if len(ctx.UserConfig.Backends) == 0 {
log.Fatal("Please define at least one collector backend.")
}
return nil
}