You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
344 lines
10 KiB
344 lines
10 KiB
/*
|
|
* MinIO Cloud Storage, (C) 2016, 2017, 2018 MinIO, Inc.
|
|
*
|
|
* 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 cmd
|
|
|
|
import (
|
|
"encoding/json"
|
|
"encoding/xml"
|
|
"errors"
|
|
"io"
|
|
"net/http"
|
|
"net/url"
|
|
"path"
|
|
"reflect"
|
|
"time"
|
|
|
|
"github.com/gorilla/mux"
|
|
xhttp "github.com/minio/minio/cmd/http"
|
|
"github.com/minio/minio/cmd/logger"
|
|
"github.com/minio/minio/pkg/bucket/policy"
|
|
"github.com/minio/minio/pkg/event"
|
|
)
|
|
|
|
const (
|
|
bucketConfigPrefix = "buckets"
|
|
bucketNotificationConfig = "notification.xml"
|
|
)
|
|
|
|
var errNoSuchNotifications = errors.New("The specified bucket does not have bucket notifications")
|
|
|
|
// GetBucketNotificationHandler - This HTTP handler returns event notification configuration
|
|
// as per http://docs.aws.amazon.com/AmazonS3/latest/dev/NotificationHowTo.html.
|
|
// It returns empty configuration if its not set.
|
|
func (api objectAPIHandlers) GetBucketNotificationHandler(w http.ResponseWriter, r *http.Request) {
|
|
ctx := newContext(r, w, "GetBucketNotification")
|
|
|
|
defer logger.AuditLog(w, r, "GetBucketNotification", mustGetClaimsFromToken(r))
|
|
|
|
vars := mux.Vars(r)
|
|
bucketName := vars["bucket"]
|
|
|
|
objAPI := api.ObjectAPI()
|
|
if objAPI == nil {
|
|
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL, guessIsBrowserReq(r))
|
|
return
|
|
}
|
|
|
|
if !objAPI.IsNotificationSupported() {
|
|
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrNotImplemented), r.URL, guessIsBrowserReq(r))
|
|
return
|
|
}
|
|
|
|
if s3Error := checkRequestAuthType(ctx, r, policy.GetBucketNotificationAction, bucketName, ""); s3Error != ErrNone {
|
|
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
|
|
return
|
|
}
|
|
|
|
_, err := objAPI.GetBucketInfo(ctx, bucketName)
|
|
if err != nil {
|
|
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
|
|
return
|
|
}
|
|
|
|
// Construct path to notification.xml for the given bucket.
|
|
configFile := path.Join(bucketConfigPrefix, bucketName, bucketNotificationConfig)
|
|
|
|
var config = event.Config{}
|
|
configData, err := readConfig(ctx, objAPI, configFile)
|
|
if err != nil {
|
|
if err != errConfigNotFound {
|
|
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
|
|
return
|
|
}
|
|
config.SetRegion(globalServerRegion)
|
|
config.XMLNS = "http://s3.amazonaws.com/doc/2006-03-01/"
|
|
notificationBytes, err := xml.Marshal(config)
|
|
if err != nil {
|
|
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
|
|
return
|
|
}
|
|
|
|
writeSuccessResponseXML(w, notificationBytes)
|
|
return
|
|
}
|
|
|
|
config.SetRegion(globalServerRegion)
|
|
|
|
if err = xml.Unmarshal(configData, &config); err != nil {
|
|
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
|
|
return
|
|
}
|
|
|
|
if err = config.Validate(globalServerRegion, globalNotificationSys.targetList); err != nil {
|
|
arnErr, ok := err.(*event.ErrARNNotFound)
|
|
if !ok {
|
|
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
|
|
return
|
|
}
|
|
for i, queue := range config.QueueList {
|
|
// Remove ARN not found queues, because we previously allowed
|
|
// adding unexpected entries into the config.
|
|
//
|
|
// With newer config disallowing changing / turning off
|
|
// notification targets without removing ARN in notification
|
|
// configuration we won't see this problem anymore.
|
|
if reflect.DeepEqual(queue.ARN, arnErr.ARN) {
|
|
config.QueueList = append(config.QueueList[:i],
|
|
config.QueueList[i+1:]...)
|
|
}
|
|
// This is a one time activity we shall do this
|
|
// here and allow stale ARN to be removed. We shall
|
|
// never reach a stage where we will have stale
|
|
// notification configs.
|
|
}
|
|
}
|
|
|
|
// If xml namespace is empty, set a default value before returning.
|
|
if config.XMLNS == "" {
|
|
config.XMLNS = "http://s3.amazonaws.com/doc/2006-03-01/"
|
|
}
|
|
|
|
notificationBytes, err := xml.Marshal(config)
|
|
if err != nil {
|
|
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
|
|
return
|
|
}
|
|
|
|
writeSuccessResponseXML(w, notificationBytes)
|
|
}
|
|
|
|
// PutBucketNotificationHandler - This HTTP handler stores given notification configuration as per
|
|
// http://docs.aws.amazon.com/AmazonS3/latest/dev/NotificationHowTo.html.
|
|
func (api objectAPIHandlers) PutBucketNotificationHandler(w http.ResponseWriter, r *http.Request) {
|
|
ctx := newContext(r, w, "PutBucketNotification")
|
|
|
|
defer logger.AuditLog(w, r, "PutBucketNotification", mustGetClaimsFromToken(r))
|
|
|
|
objectAPI := api.ObjectAPI()
|
|
if objectAPI == nil {
|
|
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL, guessIsBrowserReq(r))
|
|
return
|
|
}
|
|
|
|
if !objectAPI.IsNotificationSupported() {
|
|
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrNotImplemented), r.URL, guessIsBrowserReq(r))
|
|
return
|
|
}
|
|
|
|
vars := mux.Vars(r)
|
|
bucketName := vars["bucket"]
|
|
|
|
if s3Error := checkRequestAuthType(ctx, r, policy.PutBucketNotificationAction, bucketName, ""); s3Error != ErrNone {
|
|
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
|
|
return
|
|
}
|
|
|
|
_, err := objectAPI.GetBucketInfo(ctx, bucketName)
|
|
if err != nil {
|
|
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
|
|
return
|
|
}
|
|
|
|
// PutBucketNotification always needs a Content-Length.
|
|
if r.ContentLength <= 0 {
|
|
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrMissingContentLength), r.URL, guessIsBrowserReq(r))
|
|
return
|
|
}
|
|
|
|
lreader := io.LimitReader(r.Body, r.ContentLength)
|
|
config, err := event.ParseConfig(lreader, globalServerRegion, globalNotificationSys.targetList)
|
|
if err != nil {
|
|
apiErr := errorCodes.ToAPIErr(ErrMalformedXML)
|
|
if event.IsEventError(err) {
|
|
apiErr = toAPIError(ctx, err)
|
|
}
|
|
writeErrorResponse(ctx, w, apiErr, r.URL, guessIsBrowserReq(r))
|
|
return
|
|
}
|
|
|
|
if err = saveNotificationConfig(ctx, objectAPI, bucketName, config); err != nil {
|
|
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
|
|
return
|
|
}
|
|
|
|
rulesMap := config.ToRulesMap()
|
|
globalNotificationSys.AddRulesMap(bucketName, rulesMap)
|
|
globalNotificationSys.PutBucketNotification(ctx, bucketName, rulesMap)
|
|
|
|
writeSuccessResponseHeadersOnly(w)
|
|
}
|
|
|
|
func (api objectAPIHandlers) ListenBucketNotificationHandler(w http.ResponseWriter, r *http.Request) {
|
|
ctx := newContext(r, w, "ListenBucketNotification")
|
|
|
|
defer logger.AuditLog(w, r, "ListenBucketNotification", mustGetClaimsFromToken(r))
|
|
|
|
// Validate if bucket exists.
|
|
objAPI := api.ObjectAPI()
|
|
if objAPI == nil {
|
|
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL, guessIsBrowserReq(r))
|
|
return
|
|
}
|
|
|
|
if !objAPI.IsNotificationSupported() {
|
|
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrNotImplemented), r.URL, guessIsBrowserReq(r))
|
|
return
|
|
}
|
|
|
|
if !objAPI.IsListenBucketSupported() {
|
|
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrNotImplemented), r.URL, guessIsBrowserReq(r))
|
|
return
|
|
}
|
|
|
|
vars := mux.Vars(r)
|
|
bucketName := vars["bucket"]
|
|
|
|
values := r.URL.Query()
|
|
values.Set(peerRESTListenBucket, bucketName)
|
|
|
|
var prefix string
|
|
if len(values[peerRESTListenPrefix]) > 1 {
|
|
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrFilterNamePrefix), r.URL, guessIsBrowserReq(r))
|
|
return
|
|
}
|
|
|
|
if len(values[peerRESTListenPrefix]) == 1 {
|
|
if err := event.ValidateFilterRuleValue(values[peerRESTListenPrefix][0]); err != nil {
|
|
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
|
|
return
|
|
}
|
|
|
|
prefix = values[peerRESTListenPrefix][0]
|
|
}
|
|
|
|
var suffix string
|
|
if len(values[peerRESTListenSuffix]) > 1 {
|
|
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrFilterNameSuffix), r.URL, guessIsBrowserReq(r))
|
|
return
|
|
}
|
|
|
|
if len(values[peerRESTListenSuffix]) == 1 {
|
|
if err := event.ValidateFilterRuleValue(values[peerRESTListenSuffix][0]); err != nil {
|
|
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
|
|
return
|
|
}
|
|
|
|
suffix = values[peerRESTListenSuffix][0]
|
|
}
|
|
|
|
pattern := event.NewPattern(prefix, suffix)
|
|
|
|
var eventNames []event.Name
|
|
for _, s := range values[peerRESTListenEvents] {
|
|
eventName, err := event.ParseName(s)
|
|
if err != nil {
|
|
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
|
|
return
|
|
}
|
|
|
|
eventNames = append(eventNames, eventName)
|
|
}
|
|
|
|
if _, err := objAPI.GetBucketInfo(ctx, bucketName); err != nil {
|
|
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
|
|
return
|
|
}
|
|
|
|
rulesMap := event.NewRulesMap(eventNames, pattern, event.TargetID{ID: mustGetUUID()})
|
|
|
|
w.Header().Set(xhttp.ContentType, "text/event-stream")
|
|
|
|
doneCh := make(chan struct{})
|
|
defer close(doneCh)
|
|
|
|
// Listen Publisher and peer-listen-client uses nonblocking send and hence does not wait for slow receivers.
|
|
// Use buffered channel to take care of burst sends or slow w.Write()
|
|
listenCh := make(chan interface{}, 4000)
|
|
|
|
peers := getRestClients(globalEndpoints)
|
|
|
|
globalHTTPListen.Subscribe(listenCh, doneCh, func(evI interface{}) bool {
|
|
ev, ok := evI.(event.Event)
|
|
if !ok {
|
|
return false
|
|
}
|
|
if ev.S3.Bucket.Name != values.Get(peerRESTListenBucket) {
|
|
return false
|
|
}
|
|
objectName, uerr := url.QueryUnescape(ev.S3.Object.Key)
|
|
if uerr != nil {
|
|
objectName = ev.S3.Object.Key
|
|
}
|
|
return len(rulesMap.Match(ev.EventName, objectName).ToSlice()) != 0
|
|
})
|
|
|
|
for _, peer := range peers {
|
|
if peer == nil {
|
|
continue
|
|
}
|
|
peer.Listen(listenCh, doneCh, values)
|
|
}
|
|
|
|
keepAliveTicker := time.NewTicker(500 * time.Millisecond)
|
|
defer keepAliveTicker.Stop()
|
|
|
|
enc := json.NewEncoder(w)
|
|
for {
|
|
select {
|
|
case evI := <-listenCh:
|
|
ev := evI.(event.Event)
|
|
if len(string(ev.EventName)) > 0 {
|
|
if err := enc.Encode(struct{ Records []event.Event }{[]event.Event{ev}}); err != nil {
|
|
return
|
|
}
|
|
} else {
|
|
if _, err := w.Write([]byte(" ")); err != nil {
|
|
return
|
|
}
|
|
}
|
|
w.(http.Flusher).Flush()
|
|
case <-keepAliveTicker.C:
|
|
if _, err := w.Write([]byte(" ")); err != nil {
|
|
return
|
|
}
|
|
w.(http.Flusher).Flush()
|
|
case <-GlobalServiceDoneCh:
|
|
return
|
|
}
|
|
}
|
|
|
|
}
|
|
|