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Move expvar under the registry section

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For consistency with other systems, the redis and caching monitoring data has
been moved under the "registry" section in expvar. This ensures the entire
registry state is kept to a single section.

Signed-off-by: Stephen J Day <stephen.day@docker.com>
This commit is contained in:
Stephen J Day 2015-04-02 21:22:11 -07:00
parent 919d972e65
commit 09d48c7192
2 changed files with 27 additions and 3 deletions
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9
registry/handlers/app.go
View file

@ -272,13 +272,18 @@ func (app *App) configureRedis(configuration *configuration.Configuration) {
app.redis = pool
expvar.Publish("redis", expvar.Func(func() interface{} {
// setup expvar
registry := expvar.Get("registry")
if registry == nil {
registry = expvar.NewMap("registry")
}
registry.(*expvar.Map).Set("redis", expvar.Func(func() interface{} {
return map[string]interface{}{
"Config": configuration.Redis,
"Active": app.redis.ActiveCount(),
}
}))
}
func (app *App) ServeHTTP(w http.ResponseWriter, r *http.Request) {

21
registry/storage/layercache.go
View file

@ -174,7 +174,26 @@ var layerInfoCacheMetrics struct {
}
func init() {
expvar.Publish("layerinfocache", expvar.Func(func() interface{} {
registry := expvar.Get("registry")
if registry == nil {
registry = expvar.NewMap("registry")
}
cache := registry.(*expvar.Map).Get("cache")
if cache == nil {
cache = &expvar.Map{}
cache.(*expvar.Map).Init()
registry.(*expvar.Map).Set("cache", cache)
}
storage := cache.(*expvar.Map).Get("storage")
if storage == nil {
storage = &expvar.Map{}
storage.(*expvar.Map).Init()
cache.(*expvar.Map).Set("storage", storage)
}
storage.(*expvar.Map).Set("layerinfo", expvar.Func(func() interface{} {
// no need for synchronous access: the increments are atomic and
// during reading, we don't care if the data is up to date. The
// numbers will always *eventually* be reported correctly.