server: Move all the top level files into cmd folder. (#2490)

This change brings a change which was done for the 'mc'
package to allow for clean repo and have a cleaner
github drop in experience.

cmd/logger-console-hook.go

@@ -0,0 +1,46 @@
+/*
+ * Minio Cloud Storage, (C) 2015, 2016 Minio, Inc.
+ *
+ * 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 cmd
+
+import (
+	"io/ioutil"
+
+	"github.com/Sirupsen/logrus"
+)
+
+// consoleLogger - default logger if not other logging is enabled.
+type consoleLogger struct {
+	Enable bool   `json:"enable"`
+	Level  string `json:"level"`
+}
+
+// enable console logger.
+func enableConsoleLogger() {
+	clogger := serverConfig.GetConsoleLogger()
+	if !clogger.Enable {
+		// Disable console logger if asked for.
+		log.Out = ioutil.Discard
+		return
+	}
+
+	// log.Out and log.Formatter use the default versions.
+	// Only set specific log level.
+	lvl, err := logrus.ParseLevel(clogger.Level)
+	fatalIf(err, "Unknown log level found in the config file.")
+
+	log.Level = lvl
+}