33a575f49d
When plugin errors out, it prints out a JSON object to stdout describing the failure. This object needs to be propagated out through the plugins and to the container runtime. This change also adds Print method to both the result and error structs for easy serialization to stdout.
65 lines
1.5 KiB
Go
65 lines
1.5 KiB
Go
// Copyright 2015 CoreOS, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package main
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import (
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"fmt"
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"net/rpc"
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"os"
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"github.com/appc/cni/pkg/plugin"
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"github.com/appc/cni/pkg/skel"
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)
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const socketPath = "/run/cni/dhcp.sock"
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func main() {
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if len(os.Args) > 1 && os.Args[1] == "daemon" {
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runDaemon()
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} else {
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skel.PluginMain(cmdAdd, cmdDel)
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}
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}
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func cmdAdd(args *skel.CmdArgs) error {
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client, err := rpc.DialHTTP("unix", socketPath)
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if err != nil {
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return fmt.Errorf("error dialing DHCP daemon: %v", err)
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}
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result := &plugin.Result{}
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err = client.Call("DHCP.Allocate", args, result)
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if err != nil {
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return fmt.Errorf("error calling DHCP.Add: %v", err)
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}
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return result.Print()
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}
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func cmdDel(args *skel.CmdArgs) error {
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client, err := rpc.DialHTTP("unix", socketPath)
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if err != nil {
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return fmt.Errorf("error dialing DHCP daemon: %v", err)
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}
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dummy := struct{}{}
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err = client.Call("DHCP.Release", args, &dummy)
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if err != nil {
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return fmt.Errorf("error calling DHCP.Del: %v", err)
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}
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return nil
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}
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