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hook_client.go
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/
hook_client.go
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// Copyright Project Harbor 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 hook
import (
"encoding/json"
"errors"
"fmt"
"io/ioutil"
"net"
"net/http"
"net/url"
"os"
"strings"
"time"
"context"
"github.com/goharbor/harbor/src/jobservice/common/utils"
)
const (
proxyEnvHTTP = "http_proxy"
proxyEnvHTTPS = "https_proxy"
)
// Client for handling the hook events
type Client interface {
// SendEvent send the event to the subscribed parties
SendEvent(evt *Event) error
}
// Client is used to post the related data to the interested parties.
type basicClient struct {
client *http.Client
ctx context.Context
}
// NewClient return the ptr of the new hook client
func NewClient(ctx context.Context) Client {
// Create transport
transport := &http.Transport{
MaxIdleConns: 20,
IdleConnTimeout: 30 * time.Second,
DialContext: (&net.Dialer{
Timeout: 30 * time.Second,
KeepAlive: 30 * time.Second,
}).DialContext,
TLSHandshakeTimeout: 10 * time.Second,
ResponseHeaderTimeout: 10 * time.Second,
ExpectContinueTimeout: 1 * time.Second,
}
// Get the http/https proxies
proxyAddr, ok := os.LookupEnv(proxyEnvHTTP)
if !ok {
proxyAddr, ok = os.LookupEnv(proxyEnvHTTPS)
}
if ok && !utils.IsEmptyStr(proxyAddr) {
proxyURL, err := url.Parse(proxyAddr)
if err == nil {
transport.Proxy = http.ProxyURL(proxyURL)
}
}
client := &http.Client{
Timeout: 15 * time.Second,
Transport: transport,
}
return &basicClient{
client: client,
ctx: ctx,
}
}
// ReportStatus reports the status change info to the subscribed party.
// The status includes 'checkin' info with format 'check_in:<message>'
func (bc *basicClient) SendEvent(evt *Event) error {
if evt == nil {
return errors.New("nil event")
}
if err := evt.Validate(); err != nil {
return err
}
// Marshal data
data, err := json.Marshal(evt.Data)
if err != nil {
return err
}
// New post request
req, err := http.NewRequest(http.MethodPost, evt.URL, strings.NewReader(string(data)))
if err != nil {
return err
}
res, err := bc.client.Do(req)
if err != nil {
return err
}
defer func() {
_ = res.Body.Close()
}() // close connection for reuse
// Should be 200
if res.StatusCode != http.StatusOK {
if res.ContentLength > 0 {
// read error content and return
dt, err := ioutil.ReadAll(res.Body)
if err != nil {
return err
}
return errors.New(string(dt))
}
return fmt.Errorf("failed to report status change via hook, expect '200' but got '%d'", res.StatusCode)
}
return nil
}