mirror of
https://github.com/minio/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
GitHub
311
internal/event/target/amqp.go
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311
internal/event/target/amqp.go
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@@ -0,0 +1,311 @@
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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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"encoding/json"
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"errors"
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"net"
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"net/url"
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"os"
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"path/filepath"
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"sync"
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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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"github.com/streadway/amqp"
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)
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// AMQPArgs - AMQP target arguments.
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type AMQPArgs struct {
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Enable bool `json:"enable"`
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URL xnet.URL `json:"url"`
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Exchange string `json:"exchange"`
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RoutingKey string `json:"routingKey"`
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ExchangeType string `json:"exchangeType"`
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DeliveryMode uint8 `json:"deliveryMode"`
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Mandatory bool `json:"mandatory"`
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Immediate bool `json:"immediate"`
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Durable bool `json:"durable"`
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Internal bool `json:"internal"`
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NoWait bool `json:"noWait"`
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AutoDeleted bool `json:"autoDeleted"`
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QueueDir string `json:"queueDir"`
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QueueLimit uint64 `json:"queueLimit"`
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}
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//lint:file-ignore ST1003 We cannot change these exported names.
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// AMQP input constants.
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const (
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AmqpQueueDir = "queue_dir"
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AmqpQueueLimit = "queue_limit"
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AmqpURL = "url"
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AmqpExchange = "exchange"
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AmqpRoutingKey = "routing_key"
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AmqpExchangeType = "exchange_type"
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AmqpDeliveryMode = "delivery_mode"
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AmqpMandatory = "mandatory"
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AmqpImmediate = "immediate"
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AmqpDurable = "durable"
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AmqpInternal = "internal"
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AmqpNoWait = "no_wait"
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AmqpAutoDeleted = "auto_deleted"
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AmqpArguments = "arguments"
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AmqpPublishingHeaders = "publishing_headers"
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EnvAMQPEnable = "MINIO_NOTIFY_AMQP_ENABLE"
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EnvAMQPURL = "MINIO_NOTIFY_AMQP_URL"
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EnvAMQPExchange = "MINIO_NOTIFY_AMQP_EXCHANGE"
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EnvAMQPRoutingKey = "MINIO_NOTIFY_AMQP_ROUTING_KEY"
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EnvAMQPExchangeType = "MINIO_NOTIFY_AMQP_EXCHANGE_TYPE"
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EnvAMQPDeliveryMode = "MINIO_NOTIFY_AMQP_DELIVERY_MODE"
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EnvAMQPMandatory = "MINIO_NOTIFY_AMQP_MANDATORY"
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EnvAMQPImmediate = "MINIO_NOTIFY_AMQP_IMMEDIATE"
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EnvAMQPDurable = "MINIO_NOTIFY_AMQP_DURABLE"
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EnvAMQPInternal = "MINIO_NOTIFY_AMQP_INTERNAL"
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EnvAMQPNoWait = "MINIO_NOTIFY_AMQP_NO_WAIT"
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EnvAMQPAutoDeleted = "MINIO_NOTIFY_AMQP_AUTO_DELETED"
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EnvAMQPArguments = "MINIO_NOTIFY_AMQP_ARGUMENTS"
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EnvAMQPPublishingHeaders = "MINIO_NOTIFY_AMQP_PUBLISHING_HEADERS"
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EnvAMQPQueueDir = "MINIO_NOTIFY_AMQP_QUEUE_DIR"
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EnvAMQPQueueLimit = "MINIO_NOTIFY_AMQP_QUEUE_LIMIT"
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)
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// Validate AMQP arguments
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func (a *AMQPArgs) Validate() error {
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if !a.Enable {
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return nil
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}
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if _, err := amqp.ParseURI(a.URL.String()); err != nil {
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return err
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}
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if a.QueueDir != "" {
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if !filepath.IsAbs(a.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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// AMQPTarget - AMQP target
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type AMQPTarget struct {
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id event.TargetID
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args AMQPArgs
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conn *amqp.Connection
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connMutex sync.Mutex
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store Store
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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 TargetID.
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func (target *AMQPTarget) ID() event.TargetID {
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return target.id
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}
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// IsActive - Return true if target is up and active
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func (target *AMQPTarget) IsActive() (bool, error) {
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ch, err := target.channel()
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if err != nil {
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return false, err
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}
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defer func() {
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ch.Close()
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}()
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return true, nil
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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 *AMQPTarget) HasQueueStore() bool {
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return target.store != nil
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}
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func (target *AMQPTarget) channel() (*amqp.Channel, error) {
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var err error
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var conn *amqp.Connection
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var ch *amqp.Channel
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isAMQPClosedErr := func(err error) bool {
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if err == amqp.ErrClosed {
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return true
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}
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if nerr, ok := err.(*net.OpError); ok {
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return (nerr.Err.Error() == "use of closed network connection")
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}
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return false
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}
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target.connMutex.Lock()
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defer target.connMutex.Unlock()
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if target.conn != nil {
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ch, err = target.conn.Channel()
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if err == nil {
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return ch, nil
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}
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if !isAMQPClosedErr(err) {
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return nil, err
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}
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}
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conn, err = amqp.Dial(target.args.URL.String())
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if err != nil {
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if IsConnRefusedErr(err) {
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return nil, errNotConnected
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}
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return nil, err
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}
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ch, err = conn.Channel()
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if err != nil {
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return nil, err
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}
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target.conn = conn
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return ch, nil
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}
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// send - sends an event to the AMQP.
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func (target *AMQPTarget) send(eventData event.Event, ch *amqp.Channel) 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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if err = ch.ExchangeDeclare(target.args.Exchange, target.args.ExchangeType, target.args.Durable,
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target.args.AutoDeleted, target.args.Internal, target.args.NoWait, nil); err != nil {
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return err
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}
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return ch.Publish(target.args.Exchange, target.args.RoutingKey, target.args.Mandatory,
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target.args.Immediate, amqp.Publishing{
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ContentType: "application/json",
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DeliveryMode: target.args.DeliveryMode,
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Body: data,
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})
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}
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// Save - saves the events to the store which will be replayed when the amqp connection is active.
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func (target *AMQPTarget) 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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ch, err := target.channel()
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if err != nil {
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return err
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}
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defer func() {
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cErr := ch.Close()
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target.loggerOnce(context.Background(), cErr, target.ID())
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}()
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return target.send(eventData, ch)
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}
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// Send - sends event to AMQP.
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func (target *AMQPTarget) Send(eventKey string) error {
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ch, err := target.channel()
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if err != nil {
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return err
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}
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defer func() {
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cErr := ch.Close()
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target.loggerOnce(context.Background(), cErr, target.ID())
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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, ch); 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 - does nothing and available for interface compatibility.
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func (target *AMQPTarget) Close() error {
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if target.conn != nil {
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return target.conn.Close()
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}
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return nil
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}
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// NewAMQPTarget - creates new AMQP target.
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func NewAMQPTarget(id string, args AMQPArgs, doneCh <-chan struct{}, loggerOnce func(ctx context.Context, err error, id interface{}, errKind ...interface{}), test bool) (*AMQPTarget, error) {
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var conn *amqp.Connection
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var err error
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var store Store
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target := &AMQPTarget{
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id: event.TargetID{ID: id, Name: "amqp"},
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args: args,
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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+"-amqp-"+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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conn, err = amqp.Dial(args.URL.String())
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if err != nil {
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if 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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target.conn = conn
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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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