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132 lines
3.5 KiB
132 lines
3.5 KiB
/*
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* Minio Cloud Storage, (C) 2018 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 target
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import (
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"context"
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"fmt"
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"net/url"
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"time"
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"github.com/minio/minio/pkg/event"
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xnet "github.com/minio/minio/pkg/net"
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"gopkg.in/olivere/elastic.v5"
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)
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// ElasticsearchArgs - Elasticsearch target arguments.
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type ElasticsearchArgs struct {
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Enable bool `json:"enable"`
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Format string `json:"format"`
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URL xnet.URL `json:"url"`
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Index string `json:"index"`
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}
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// ElasticsearchTarget - Elasticsearch target.
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type ElasticsearchTarget struct {
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id event.TargetID
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args ElasticsearchArgs
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client *elastic.Client
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}
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// ID - returns target ID.
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func (target *ElasticsearchTarget) ID() event.TargetID {
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return target.id
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}
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// Send - sends event to Elasticsearch.
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func (target *ElasticsearchTarget) Send(eventData event.Event) (err error) {
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var key string
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remove := func() error {
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_, err := target.client.Delete().Index(target.args.Index).Type("event").Id(key).Do(context.Background())
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return err
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}
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update := func() error {
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_, err := target.client.Index().Index(target.args.Index).Type("event").BodyJson(map[string]interface{}{"Records": []event.Event{eventData}}).Id(key).Do(context.Background())
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return err
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}
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add := func() error {
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eventTime, err := time.Parse(event.AMZTimeFormat, eventData.EventTime)
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if err != nil {
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return err
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}
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eventTimeMS := fmt.Sprintf("%d", eventTime.UnixNano()/1000000)
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_, err = target.client.Index().Index(target.args.Index).Type("event").Timestamp(eventTimeMS).BodyJson(map[string]interface{}{"Records": []event.Event{eventData}}).Do(context.Background())
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return err
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}
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if target.args.Format == event.NamespaceFormat {
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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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if eventData.EventName == event.ObjectRemovedDelete {
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err = remove()
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} else {
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err = update()
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}
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return err
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}
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if target.args.Format == event.AccessFormat {
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return add()
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}
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return nil
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}
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// Close - does nothing and available for interface compatibility.
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func (target *ElasticsearchTarget) Close() error {
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return nil
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}
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// NewElasticsearchTarget - creates new Elasticsearch target.
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func NewElasticsearchTarget(id string, args ElasticsearchArgs) (*ElasticsearchTarget, error) {
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client, err := elastic.NewClient(elastic.SetURL(args.URL.String()), elastic.SetSniff(false), elastic.SetMaxRetries(10))
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if err != nil {
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return nil, err
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}
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exists, err := client.IndexExists(args.Index).Do(context.Background())
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if err != nil {
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return nil, err
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}
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if !exists {
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var createIndex *elastic.IndicesCreateResult
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if createIndex, err = client.CreateIndex(args.Index).Do(context.Background()); err != nil {
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return nil, err
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}
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if !createIndex.Acknowledged {
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return nil, fmt.Errorf("index %v not created", args.Index)
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}
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}
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return &ElasticsearchTarget{
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id: event.TargetID{id, "elasticsearch"},
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args: args,
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client: client,
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}, nil
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}
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