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118 lines
2.8 KiB
118 lines
2.8 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 main
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import (
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"errors"
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"github.com/Sirupsen/logrus"
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"gopkg.in/olivere/elastic.v3"
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)
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// elasticQueue is a elasticsearch event notification queue.
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type elasticSearchLogger struct {
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Enable bool `json:"enable"`
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Level string `json:"level"`
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URL string `json:"url"`
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Index string `json:"index"`
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}
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type elasticClient struct {
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*elastic.Client
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params elasticSearchLogger
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}
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// Connects to elastic search instance at URL.
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func dialElastic(esLogger elasticSearchLogger) (*elastic.Client, error) {
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if !esLogger.Enable {
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return nil, errLoggerNotEnabled
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}
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client, err := elastic.NewClient(elastic.SetURL(esLogger.URL), elastic.SetSniff(false))
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if err != nil {
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return nil, err
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}
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return client, nil
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}
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// Enables elasticsearch logger.
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func enableElasticLogger() error {
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esLogger := serverConfig.GetElasticSearchLogger()
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// Dial to elastic search.
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client, err := dialElastic(esLogger)
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if err != nil {
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return err
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}
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// Use the IndexExists service to check if a specified index exists.
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exists, err := client.IndexExists(esLogger.Index).Do()
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if err != nil {
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return err
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}
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// Index does not exist, attempt to create it.
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if !exists {
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var createIndex *elastic.IndicesCreateResult
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createIndex, err = client.CreateIndex(esLogger.Index).Do()
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if err != nil {
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return err
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}
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if !createIndex.Acknowledged {
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return errors.New("index not created")
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}
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}
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elasticCl := elasticClient{
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Client: client,
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params: esLogger,
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}
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lvl, err := logrus.ParseLevel(esLogger.Level)
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fatalIf(err, "Unknown log level found in the config file.")
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// Add a elasticsearch hook.
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log.Hooks.Add(elasticCl)
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// Set default JSON formatter.
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log.Formatter = new(logrus.JSONFormatter)
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// Set default log level to info.
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log.Level = lvl
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return nil
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}
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// Fire is required to implement logrus hook
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func (q elasticClient) Fire(entry *logrus.Entry) error {
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_, err := q.Client.Index().Index(q.params.Index).
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Type("event").
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BodyJson(entry.Data).
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Do()
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return err
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}
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// Required for logrus hook implementation
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func (q elasticClient) Levels() []logrus.Level {
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return []logrus.Level{
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logrus.PanicLevel,
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logrus.FatalLevel,
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logrus.ErrorLevel,
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logrus.WarnLevel,
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logrus.InfoLevel,
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logrus.DebugLevel,
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}
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}
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