harbor/service/notification.go

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/*
Copyright (c) 2016 VMware, Inc. All Rights Reserved.
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.
*/
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package service
import (
"encoding/json"
"regexp"
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"strings"
"github.com/vmware/harbor/api"
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"github.com/vmware/harbor/dao"
"github.com/vmware/harbor/models"
"github.com/vmware/harbor/service/cache"
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"github.com/vmware/harbor/utils/log"
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"github.com/astaxie/beego"
)
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// NotificationHandler handles request on /service/notifications/, which listens to registry's events.
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type NotificationHandler struct {
beego.Controller
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}
const manifestPattern = `^application/vnd.docker.distribution.manifest.v\d\+json`
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// Post handles POST request, and records audit log or refreshes cache based on event.
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func (n *NotificationHandler) Post() {
var notification models.Notification
err := json.Unmarshal(n.Ctx.Input.CopyBody(1<<32), &notification)
if err != nil {
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log.Errorf("failed to decode notification: %v", err)
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return
}
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events, err := filterEvents(&notification)
if err != nil {
log.Errorf("failed to filter events: %v", err)
return
}
for _, event := range events {
repository := event.Target.Repository
project := ""
if strings.Contains(repository, "/") {
project = repository[0:strings.LastIndex(repository, "/")]
}
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tag := event.Target.Tag
action := event.Action
user := event.Actor.Name
if len(user) == 0 {
user = "anonymous"
}
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go func() {
if err := dao.AccessLog(user, project, repository, tag, action); err != nil {
log.Errorf("failed to add access log: %v", err)
}
}()
if action == "push" {
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go func() {
if err := cache.RefreshCatalogCache(); err != nil {
log.Errorf("failed to refresh cache: %v", err)
}
}()
operation := ""
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if action == "push" {
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operation = models.RepOpTransfer
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}
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go api.TriggerReplicationByRepository(repository, []string{tag}, operation)
}
}
}
func filterEvents(notification *models.Notification) ([]*models.Event, error) {
events := []*models.Event{}
for _, event := range notification.Events {
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log.Debugf("receive an event: ID-%s, target-%s:%s, digest-%s, action-%s", event.ID, event.Target.Repository, event.Target.Tag,
event.Target.Digest, event.Action)
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isManifest, err := regexp.MatchString(manifestPattern, event.Target.MediaType)
if err != nil {
log.Errorf("failed to match the media type against pattern: %v", err)
continue
}
if !isManifest {
continue
}
//pull and push manifest by docker-client
if strings.HasPrefix(event.Request.UserAgent, "docker") && (event.Action == "pull" || event.Action == "push") {
events = append(events, &event)
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log.Debugf("add event to collect: %s", event.ID)
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continue
}
//push manifest by docker-client or job-service
if strings.ToLower(strings.TrimSpace(event.Request.UserAgent)) == "harbor-registry-client" && event.Action == "push" {
events = append(events, &event)
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log.Debugf("add event to collect: %s", event.ID)
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continue
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}
}
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return events, nil
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}
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// Render returns nil as it won't render any template.
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func (n *NotificationHandler) Render() error {
return nil
}