// mergeLogConfig merges the daemon log config to the container's log config if the container's log driver is not specified.
func (daemon *Daemon) mergeAndVerifyLogConfig(cfg *containertypes.LogConfig) error {
if cfg.Type == "" {
cfg.Type = daemon.defaultLogConfig.Type
}
if cfg.Config == nil {
cfg.Config = make(map[string]string)
}
if cfg.Type == daemon.defaultLogConfig.Type {
for k, v := range daemon.defaultLogConfig.Config {
if _, ok := cfg.Config[k]; !ok {
cfg.Config[k] = v
}
}
}
return logger.ValidateLogOpts(cfg.Type, cfg.Config)
}
// getLogConfig returns the log configuration for the container.
func (daemon *Daemon) getLogConfig(cfg containertypes.LogConfig) containertypes.LogConfig {
if cfg.Type != "" || len(cfg.Config) > 0 { // container has log driver configured
if cfg.Type == "" {
cfg.Type = jsonfilelog.Name
}
return cfg
}
// Use daemon's default log config for containers
return daemon.defaultLogConfig
}