Refactor config and agent

Signed-off-by: Ondrej Fabry <[email protected]>

agent/agent.go

@@ -73,23 +73,6 @@ type Agent interface {
 	Error() error
 }
 
-var (
-	DefaultAgent Agent = NewAgent()
-)
-
-func Init(opts ...Option) { DefaultAgent.Init(opts...) }
-func Start() error        { return DefaultAgent.Start() }
-func Stop() error         { return DefaultAgent.Stop() }
-func Wait() error         { return DefaultAgent.Wait() }
-func Run() error          { return DefaultAgent.Run() }
-
-/*func Run() error {
-	if err := Start(); err != nil {
-		return err
-	}
-	return Wait()
-}*/
-
 // NewAgent creates a new agent using given options and registers all flags
 // defined for plugins via config.ForPlugin.
 func NewAgent(opts ...Option) Agent {
@@ -126,9 +109,6 @@ func (a *agent) Init(opts ...Option) {
 	for _, o := range opts {
 		o(&a.opts)
 	}
-	/*if err := a.init(); err != nil {
-		agentLogger.Fatal("agent init error:", err)
-	}*/
 }
 
 func (a *agent) setup() error {

agent/default.go

@@ -0,0 +1,25 @@
+//  Copyright (c) 2020 Cisco and/or its affiliates.
+//
+//  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 agent
+
+var (
+	DefaultAgent Agent = NewAgent()
+)
+
+func Init(opts ...Option) { DefaultAgent.Init(opts...) }
+func Start() error        { return DefaultAgent.Start() }
+func Stop() error         { return DefaultAgent.Stop() }
+func Wait() error         { return DefaultAgent.Wait() }
+func Run() error          { return DefaultAgent.Run() }