feat(logger): add a global default Logger.

pkg/kube/client.go

@@ -70,7 +70,7 @@ func New(config clientcmd.ClientConfig) *Client {
 	return &Client{
 		Factory:        cmdutil.NewFactory(config),
 		SchemaCacheDir: clientcmd.RecommendedSchemaFile,
-		Logger:         logger.NewNopLogger(),
+		Logger:         logger.DefaultLogger,
 	}
 }
 

pkg/logger/doc.go

@@ -0,0 +1,18 @@
+/*
+Copyright 2016 The Kubernetes Authors All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Package logger provides an abstract interface for logging.
+package logger // import "k8s.io/helm/pkg/logger"

pkg/logger/logger.go

@@ -14,14 +14,14 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-package logger
+package logger // import "k8s.io/helm/pkg/logger"
 
 // Logger provides a generic way of handling logging.
 type Logger interface {
 	Printf(format string, args ...interface{})
 }
 
-// Func is an adaptor to allow the use of ordinary functions as logggers.
+// Func is an adaptor to allow the use of ordinary functions as loggers.
 type Func func(string, ...interface{})
 
 // Printf implements Logger.
@@ -29,10 +29,8 @@ func (l Func) Printf(format string, args ...interface{}) {
 	l(format, args...)
 }
 
-type nopLogger struct{}
+// DefaultLogger is a globally set Logger used when initializing clients.
+var DefaultLogger Logger = NewNopLogger()
 
-// NewNopLogger creates a nopLogger.
-func NewNopLogger() Logger { return nopLogger{} }
-
-// Printf implements Logger.
-func (nopLogger) Printf(format string, args ...interface{}) {}
+// NewNopLogger returns a Logger that does nothing.
+func NewNopLogger() Func { return func(_ string, _ ...interface{}) {} }

pkg/storage/storage.go

@@ -221,6 +221,6 @@ func Init(d driver.Driver) *Storage {
 		Driver:           d,
 		releaseLocks:     make(map[string]*sync.Mutex),
 		releaseLocksLock: &sync.Mutex{},
-		Logger:           logger.NewNopLogger(),
+		Logger:           logger.DefaultLogger,
 	}
 }

pkg/tiller/release_server.go

@@ -102,7 +102,7 @@ func NewReleaseServer(env *environment.Environment, clientset internalclientset.
 		env:           env,
 		clientset:     clientset,
 		ReleaseModule: releaseModule,
-		Logger:        logger.NewNopLogger(),
+		Logger:        logger.DefaultLogger,
 	}
 }