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145 lines
3.3 KiB
145 lines
3.3 KiB
/*
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* Minio Cloud Storage, (C) 2016 Minio, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package cmd
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import (
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"io/ioutil"
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"github.com/Sirupsen/logrus"
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"github.com/streadway/amqp"
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)
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// amqpNotify - represents logrus compatible AMQP hook.
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// All fields represent AMQP configuration details.
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type amqpNotify struct {
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Enable bool `json:"enable"`
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URL string `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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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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}
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type amqpConn struct {
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params amqpNotify
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*amqp.Connection
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}
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// dialAMQP - dials and returns an amqpConnection instance,
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// for sending notifications. Returns error if amqp logger
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// is not enabled.
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func dialAMQP(amqpL amqpNotify) (amqpConn, error) {
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if !amqpL.Enable {
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return amqpConn{}, errNotifyNotEnabled
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}
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conn, err := amqp.Dial(amqpL.URL)
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if err != nil {
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return amqpConn{}, err
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}
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return amqpConn{Connection: conn, params: amqpL}, nil
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}
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func newAMQPNotify(accountID string) (*logrus.Logger, error) {
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amqpL := serverConfig.GetAMQPNotifyByID(accountID)
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// Connect to amqp server.
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amqpC, err := dialAMQP(amqpL)
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if err != nil {
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return nil, err
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}
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amqpLog := logrus.New()
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// Disable writing to console.
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amqpLog.Out = ioutil.Discard
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// Add a amqp hook.
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amqpLog.Hooks.Add(amqpC)
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// Set default JSON formatter.
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amqpLog.Formatter = new(logrus.JSONFormatter)
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// Successfully enabled all AMQPs.
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return amqpLog, nil
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}
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// Fire is called when an event should be sent to the message broker.
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func (q amqpConn) Fire(entry *logrus.Entry) error {
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ch, err := q.Connection.Channel()
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if err != nil {
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// Any other error other than connection closed, return.
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if err != amqp.ErrClosed {
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return err
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}
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// Attempt to connect again.
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var conn *amqp.Connection
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conn, err = amqp.Dial(q.params.URL)
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if err != nil {
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return 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 err
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}
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}
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defer ch.Close()
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err = ch.ExchangeDeclare(
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q.params.Exchange,
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q.params.ExchangeType,
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q.params.Durable,
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q.params.AutoDeleted,
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q.params.Internal,
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q.params.NoWait,
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nil,
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)
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if err != nil {
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return err
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}
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body, err := entry.String()
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if err != nil {
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return err
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}
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err = ch.Publish(
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q.params.Exchange,
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q.params.RoutingKey,
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q.params.Mandatory,
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q.params.Immediate,
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amqp.Publishing{
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ContentType: "application/json",
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Body: []byte(body),
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})
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if err != nil {
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return err
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}
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return nil
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}
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// Levels is available logging levels.
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func (q amqpConn) Levels() []logrus.Level {
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return []logrus.Level{
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logrus.InfoLevel,
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}
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}
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