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Allow control over which storage cache to use

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This allows one to better control the usage of the cache and turn it off
completely. The storage configuration module was modified to allow parameters
to be passed to just the storage implementation, rather than to the driver.

Signed-off-by: Stephen J Day <stephen.day@docker.com>
This commit is contained in:
Stephen J Day 2015-04-02 16:38:01 -07:00
parent 6ab228f798
commit 4e1ecad6cc
1 changed files with 22 additions and 5 deletions
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27
docs/handlers/app.go
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@ -103,11 +103,28 @@ func NewApp(ctx context.Context, configuration configuration.Configuration) *App
app.configureEvents(&configuration)
app.configureRedis(&configuration)
if app.redis != nil {
app.registry = storage.NewRegistryWithDriver(app.driver, cache.NewRedisLayerInfoCache(app.redis))
} else {
// always fall back to inmemory storage
app.registry = storage.NewRegistryWithDriver(app.driver, cache.NewInMemoryLayerInfoCache())
// configure storage caches
if cc, ok := configuration.Storage["cache"]; ok {
switch cc["layerinfo"] {
case "redis":
if app.redis == nil {
panic("redis configuration required to use for layerinfo cache")
}
app.registry = storage.NewRegistryWithDriver(app.driver, cache.NewRedisLayerInfoCache(app.redis))
ctxu.GetLogger(app).Infof("using redis layerinfo cache")
case "inmemory":
app.registry = storage.NewRegistryWithDriver(app.driver, cache.NewInMemoryLayerInfoCache())
ctxu.GetLogger(app).Infof("using inmemory layerinfo cache")
default:
if cc["layerinfo"] != "" {
ctxu.GetLogger(app).Warnf("unkown cache type %q, caching disabled", configuration.Storage["cache"])
}
}
}
if app.registry == nil {
// configure the registry if no cache section is available.
app.registry = storage.NewRegistryWithDriver(app.driver, nil)
}
app.registry, err = applyRegistryMiddleware(app.registry, configuration.Middleware["registry"])