dotcloud/docker

package cache

import (
    "strconv"

    "github.com/docker/docker/daemon/logger"
    "github.com/docker/docker/daemon/logger/local"
    "github.com/pkg/errors"
)

func init() {
    for k, v := range local.LogOptKeys {
        builtInCacheLogOpts[cachePrefix+k] = v
    }
    logger.AddBuiltinLogOpts(builtInCacheLogOpts)
    logger.RegisterExternalValidator(validateLogCacheOpts)
}

func validateLogCacheOpts(cfg map[string]string) error {
    if v := cfg[cacheDisabledKey]; v != "" {
        _, err := strconv.ParseBool(v)
        if err != nil {
            return errors.Errorf("invalid value for option %s: %s", cacheDisabledKey, cfg[cacheDisabledKey])
        }
    }
    return nil
}

// MergeDefaultLogConfig reads the default log opts and makes sure that any caching related keys that exist there are
// added to dst.
func MergeDefaultLogConfig(dst, defaults map[string]string) {
    for k, v := range defaults {
        if !builtInCacheLogOpts[k] {
            continue
        }
        if _, exists := dst[k]; !exists {
            dst[k] = v
        }
    }
}