Files
cloudpods/pkg/monitor/alerting/notifiers/util.go
2022-03-30 11:05:54 +08:00

133 lines
3.4 KiB
Go

// Copyright 2019 Yunion
//
// 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 notifiers
import (
"bytes"
"context"
"crypto/tls"
"encoding/base64"
"fmt"
"io"
"io/ioutil"
"net"
"net/http"
"strings"
"time"
"golang.org/x/net/context/ctxhttp"
"moul.io/http2curl/v2"
"yunion.io/x/log"
"yunion.io/x/onecloud/pkg/apis/monitor"
)
// GetBasicAuthHeader returns a base64 encoded string from user and password.
func GetBasicAuthHeader(user string, password string) string {
var userAndPass = user + ":" + password
return "Basic " + base64.StdEncoding.EncodeToString([]byte(userAndPass))
}
// DecodeBasicAuthHeader decodes user and password from a basic auth header.
func DecodeBasicAuthHeader(header string) (string, string, error) {
var code string
parts := strings.SplitN(header, " ", 2)
if len(parts) == 2 && parts[0] == "Basic" {
code = parts[1]
}
decoded, err := base64.StdEncoding.DecodeString(code)
if err != nil {
return "", "", err
}
userAndPass := strings.SplitN(string(decoded), ":", 2)
if len(userAndPass) != 2 {
return "", "", fmt.Errorf("Invalid basic auth header")
}
return userAndPass[0], userAndPass[1], nil
}
// TODO: use httputils.HttpTransport instead -- qj
// TODO:
var netTransport = &http.Transport{
TLSClientConfig: &tls.Config{
Renegotiation: tls.RenegotiateFreelyAsClient,
},
Proxy: http.ProxyFromEnvironment,
DialContext: (&net.Dialer{
Timeout: 30 * time.Second,
}).DialContext,
TLSHandshakeTimeout: 5 * time.Second,
}
var netClient = &http.Client{
Timeout: time.Second * 30,
Transport: netTransport,
}
func SendWebRequestSync(ctx context.Context, webhook *monitor.SendWebhookSync) error {
if webhook.HttpMethod == "" {
webhook.HttpMethod = http.MethodPost
}
request, err := http.NewRequest(webhook.HttpMethod, webhook.Url, bytes.NewReader([]byte(webhook.Body)))
if err != nil {
return err
}
if webhook.ContentType == "" {
webhook.ContentType = "application/json"
}
request.Header.Add("Content-Type", webhook.ContentType)
request.Header.Add("User-Agent", "OneCloud Monitor")
if webhook.User != "" && webhook.Password != "" {
request.Header.Add("Authorization", GetBasicAuthHeader(webhook.User, webhook.Password))
}
for k, v := range webhook.HttpHeader {
request.Header.Set(k, v)
}
curlCmd, _ := http2curl.GetCurlCommand(request)
log.Debugf("webhook curl: %s", curlCmd)
resp, err := ctxhttp.Do(ctx, netClient, request)
if err != nil {
return err
}
defer resp.Body.Close()
if resp.StatusCode/100 == 2 {
// flushing the body enables the transport to reuse the same connection
if _, err := io.Copy(ioutil.Discard, resp.Body); err != nil {
log.Errorf("Failed to copy resp.Body to ioutil.Discard: %v", err)
}
return nil
}
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
return err
}
log.Errorf("Webhook failed statuscode: %s, body: %s", resp.Status, string(body))
return fmt.Errorf("Webhook response status %v", resp.Status)
}