mirror of
https://github.com/pgsty/minio.git
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rename all remaining packages to internal/ (#12418)
This is to ensure that there are no projects that try to import `minio/minio/pkg` into their own repo. Any such common packages should go to `https://github.com/minio/pkg`
This commit is contained in:
Harshavardhana
@@ -0,0 +1,242 @@
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// Copyright (c) 2015-2021 MinIO, Inc.
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//
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// This file is part of MinIO Object Storage stack
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package target
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import (
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"context"
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"crypto/tls"
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"encoding/json"
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"errors"
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"net/url"
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"os"
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"path/filepath"
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"github.com/nsqio/go-nsq"
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"github.com/minio/minio/internal/event"
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xnet "github.com/minio/minio/internal/net"
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)
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// NSQ constants
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const (
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NSQAddress = "nsqd_address"
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NSQTopic = "topic"
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NSQTLS = "tls"
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NSQTLSSkipVerify = "tls_skip_verify"
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NSQQueueDir = "queue_dir"
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NSQQueueLimit = "queue_limit"
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EnvNSQEnable = "MINIO_NOTIFY_NSQ_ENABLE"
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EnvNSQAddress = "MINIO_NOTIFY_NSQ_NSQD_ADDRESS"
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EnvNSQTopic = "MINIO_NOTIFY_NSQ_TOPIC"
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EnvNSQTLS = "MINIO_NOTIFY_NSQ_TLS"
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EnvNSQTLSSkipVerify = "MINIO_NOTIFY_NSQ_TLS_SKIP_VERIFY"
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EnvNSQQueueDir = "MINIO_NOTIFY_NSQ_QUEUE_DIR"
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EnvNSQQueueLimit = "MINIO_NOTIFY_NSQ_QUEUE_LIMIT"
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)
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// NSQArgs - NSQ target arguments.
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type NSQArgs struct {
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Enable bool `json:"enable"`
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NSQDAddress xnet.Host `json:"nsqdAddress"`
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Topic string `json:"topic"`
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TLS struct {
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Enable bool `json:"enable"`
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SkipVerify bool `json:"skipVerify"`
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} `json:"tls"`
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QueueDir string `json:"queueDir"`
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QueueLimit uint64 `json:"queueLimit"`
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}
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// Validate NSQArgs fields
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func (n NSQArgs) Validate() error {
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if !n.Enable {
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return nil
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}
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if n.NSQDAddress.IsEmpty() {
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return errors.New("empty nsqdAddress")
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}
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if n.Topic == "" {
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return errors.New("empty topic")
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}
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if n.QueueDir != "" {
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if !filepath.IsAbs(n.QueueDir) {
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return errors.New("queueDir path should be absolute")
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}
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}
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return nil
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}
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// NSQTarget - NSQ target.
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type NSQTarget struct {
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id event.TargetID
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args NSQArgs
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producer *nsq.Producer
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store Store
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config *nsq.Config
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loggerOnce func(ctx context.Context, err error, id interface{}, errKind ...interface{})
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}
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// ID - returns target ID.
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func (target *NSQTarget) ID() event.TargetID {
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return target.id
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}
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// HasQueueStore - Checks if the queueStore has been configured for the target
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func (target *NSQTarget) HasQueueStore() bool {
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return target.store != nil
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}
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// IsActive - Return true if target is up and active
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func (target *NSQTarget) IsActive() (bool, error) {
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if target.producer == nil {
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producer, err := nsq.NewProducer(target.args.NSQDAddress.String(), target.config)
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if err != nil {
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return false, err
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}
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target.producer = producer
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}
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if err := target.producer.Ping(); err != nil {
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// To treat "connection refused" errors as errNotConnected.
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if IsConnRefusedErr(err) {
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return false, errNotConnected
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}
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return false, err
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}
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return true, nil
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}
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// Save - saves the events to the store which will be replayed when the nsq connection is active.
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func (target *NSQTarget) Save(eventData event.Event) error {
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if target.store != nil {
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return target.store.Put(eventData)
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}
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_, err := target.IsActive()
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if err != nil {
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return err
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}
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return target.send(eventData)
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}
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// send - sends an event to the NSQ.
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func (target *NSQTarget) send(eventData event.Event) error {
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objectName, err := url.QueryUnescape(eventData.S3.Object.Key)
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if err != nil {
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return err
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}
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key := eventData.S3.Bucket.Name + "/" + objectName
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data, err := json.Marshal(event.Log{EventName: eventData.EventName, Key: key, Records: []event.Event{eventData}})
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if err != nil {
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return err
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}
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return target.producer.Publish(target.args.Topic, data)
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}
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// Send - reads an event from store and sends it to NSQ.
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func (target *NSQTarget) Send(eventKey string) error {
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_, err := target.IsActive()
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if err != nil {
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return err
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}
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eventData, eErr := target.store.Get(eventKey)
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if eErr != nil {
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// The last event key in a successful batch will be sent in the channel atmost once by the replayEvents()
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// Such events will not exist and wouldve been already been sent successfully.
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if os.IsNotExist(eErr) {
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return nil
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}
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return eErr
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}
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if err := target.send(eventData); err != nil {
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return err
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}
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// Delete the event from store.
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return target.store.Del(eventKey)
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}
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// Close - closes underneath connections to NSQD server.
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func (target *NSQTarget) Close() (err error) {
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if target.producer != nil {
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// this blocks until complete:
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target.producer.Stop()
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}
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return nil
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}
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// NewNSQTarget - creates new NSQ target.
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func NewNSQTarget(id string, args NSQArgs, doneCh <-chan struct{}, loggerOnce func(ctx context.Context, err error, id interface{}, kind ...interface{}), test bool) (*NSQTarget, error) {
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config := nsq.NewConfig()
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if args.TLS.Enable {
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config.TlsV1 = true
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config.TlsConfig = &tls.Config{
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InsecureSkipVerify: args.TLS.SkipVerify,
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}
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}
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var store Store
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target := &NSQTarget{
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id: event.TargetID{ID: id, Name: "nsq"},
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args: args,
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config: config,
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loggerOnce: loggerOnce,
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}
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if args.QueueDir != "" {
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queueDir := filepath.Join(args.QueueDir, storePrefix+"-nsq-"+id)
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store = NewQueueStore(queueDir, args.QueueLimit)
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if oErr := store.Open(); oErr != nil {
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target.loggerOnce(context.Background(), oErr, target.ID())
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return target, oErr
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}
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target.store = store
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}
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producer, err := nsq.NewProducer(args.NSQDAddress.String(), config)
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if err != nil {
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target.loggerOnce(context.Background(), err, target.ID())
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return target, err
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}
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target.producer = producer
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if err := target.producer.Ping(); err != nil {
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// To treat "connection refused" errors as errNotConnected.
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if target.store == nil || !(IsConnRefusedErr(err) || IsConnResetErr(err)) {
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target.loggerOnce(context.Background(), err, target.ID())
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return target, err
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}
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}
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if target.store != nil && !test {
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// Replays the events from the store.
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eventKeyCh := replayEvents(target.store, doneCh, target.loggerOnce, target.ID())
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// Start replaying events from the store.
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go sendEvents(target, eventKeyCh, doneCh, target.loggerOnce)
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}
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return target, nil
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}
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