mirror of
https://github.com/k8snetworkplumbingwg/multus-cni.git
synced 2025-10-26 10:52:31 +00:00
77e0150afe
This change fix license boilerplate and its copyright. The updated year in copyright is based on the file creation date. If older than 2021, added copyright is transfered to multus authors from Intel corporation as the multus code was officially transfered to Kubernetes Networking Plumbing Working Group on March 11, 2021.
88 lines
2.7 KiB
Go
88 lines
2.7 KiB
Go
// Copyright (c) 2022 Multus 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 api
|
|
|
|
import (
|
|
"bytes"
|
|
"encoding/json"
|
|
"fmt"
|
|
"io/ioutil"
|
|
"net"
|
|
"net/http"
|
|
"strings"
|
|
)
|
|
|
|
const (
|
|
// MultusCNIAPIEndpoint is an endpoint for multus CNI request (for multus-shim)
|
|
MultusCNIAPIEndpoint = "/cni"
|
|
// MultusDelegateAPIEndpoint is an endpoint for multus delegate request (for hotplug)
|
|
MultusDelegateAPIEndpoint = "/delegate"
|
|
defaultMultusRunDir = "/run/multus/"
|
|
)
|
|
|
|
// DoCNI sends a CNI request to the CNI server via JSON + HTTP over a root-owned unix socket,
|
|
// and returns the result
|
|
func DoCNI(url string, req interface{}, socketPath string) ([]byte, error) {
|
|
data, err := json.Marshal(req)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("failed to marshal CNI request %v: %v", req, err)
|
|
}
|
|
|
|
client := &http.Client{
|
|
Transport: &http.Transport{
|
|
Dial: func(proto, addr string) (net.Conn, error) {
|
|
return net.Dial("unix", socketPath)
|
|
},
|
|
},
|
|
}
|
|
|
|
resp, err := client.Post(url, "application/json", bytes.NewReader(data))
|
|
if err != nil {
|
|
return nil, fmt.Errorf("failed to send CNI request: %v", err)
|
|
}
|
|
defer resp.Body.Close()
|
|
|
|
body, err := ioutil.ReadAll(resp.Body)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("failed to read CNI result: %v", err)
|
|
}
|
|
|
|
if resp.StatusCode != http.StatusOK {
|
|
return nil, fmt.Errorf("CNI request failed with status %v: '%s'", resp.StatusCode, string(body))
|
|
}
|
|
|
|
return body, nil
|
|
}
|
|
|
|
// GetAPIEndpoint returns endpoint URL for multus-daemon
|
|
func GetAPIEndpoint(endpoint string) string {
|
|
return fmt.Sprintf("http://dummy%s", endpoint)
|
|
}
|
|
|
|
// CreateDelegateRequest creates Request for delegate API request
|
|
func CreateDelegateRequest(cniCommand, cniContainerID, cniNetNS, cniIFName, podNamespace, podName, podUID string, cniConfig []byte, interfaceAttributes *DelegateInterfaceAttributes) *Request {
|
|
return &Request{
|
|
Env: map[string]string{
|
|
"CNI_COMMAND": strings.ToUpper(cniCommand),
|
|
"CNI_CONTAINERID": cniContainerID,
|
|
"CNI_NETNS": cniNetNS,
|
|
"CNI_IFNAME": cniIFName,
|
|
"CNI_ARGS": fmt.Sprintf("K8S_POD_NAMESPACE=%s;K8S_POD_NAME=%s;K8S_POD_UID=%s", podNamespace, podName, podUID),
|
|
},
|
|
Config: cniConfig,
|
|
InterfaceAttributes: interfaceAttributes,
|
|
}
|
|
}
|