1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
|
// Copyright 2016 CNI authors
//
// 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 invoke
import (
"context"
"fmt"
"os"
"path/filepath"
"github.com/containernetworking/cni/pkg/types"
)
func delegateCommon(expectedCommand, delegatePlugin string, exec Exec) (string, Exec, error) {
if exec == nil {
exec = defaultExec
}
if os.Getenv("CNI_COMMAND") != expectedCommand {
return "", nil, fmt.Errorf("CNI_COMMAND is not " + expectedCommand)
}
paths := filepath.SplitList(os.Getenv("CNI_PATH"))
pluginPath, err := exec.FindInPath(delegatePlugin, paths)
if err != nil {
return "", nil, err
}
return pluginPath, exec, nil
}
// DelegateAdd calls the given delegate plugin with the CNI ADD action and
// JSON configuration
func DelegateAdd(ctx context.Context, delegatePlugin string, netconf []byte, exec Exec) (types.Result, error) {
pluginPath, realExec, err := delegateCommon("ADD", delegatePlugin, exec)
if err != nil {
return nil, err
}
return ExecPluginWithResult(ctx, pluginPath, netconf, ArgsFromEnv(), realExec)
}
// DelegateCheck calls the given delegate plugin with the CNI CHECK action and
// JSON configuration
func DelegateCheck(ctx context.Context, delegatePlugin string, netconf []byte, exec Exec) error {
pluginPath, realExec, err := delegateCommon("CHECK", delegatePlugin, exec)
if err != nil {
return err
}
return ExecPluginWithoutResult(ctx, pluginPath, netconf, ArgsFromEnv(), realExec)
}
// DelegateDel calls the given delegate plugin with the CNI DEL action and
// JSON configuration
func DelegateDel(ctx context.Context, delegatePlugin string, netconf []byte, exec Exec) error {
pluginPath, realExec, err := delegateCommon("DEL", delegatePlugin, exec)
if err != nil {
return err
}
return ExecPluginWithoutResult(ctx, pluginPath, netconf, ArgsFromEnv(), realExec)
}
|
