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pick up the common part of elasticsearch sink
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huangyuqi
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May 16, 2016
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,118 @@ | ||
| // Copyright 2015 Google Inc. All Rights Reserved. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
| package elasticsearch | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "net/url" | ||
|
|
||
| "github.com/golang/glog" | ||
| "github.com/olivere/elastic" | ||
| "github.com/pborman/uuid" | ||
| ) | ||
|
|
||
| const ( | ||
| ESIndex = "heapster" | ||
| ) | ||
|
|
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| // SaveDataFunc is a pluggable function to enforce limits on the object | ||
| type SaveDataFunc func(esClient *elastic.Client, indexName string, typeName string, sinkData interface{}) error | ||
|
|
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| type ElasticSearchConfig struct { | ||
| EsClient *elastic.Client | ||
| Index string | ||
| NeedAuthen bool | ||
| EsUserName string | ||
| EsUserSecret string | ||
| EsNodes []string | ||
| } | ||
|
|
||
| // SaveDataIntoES save metrics and events to ES by using ES client | ||
| func SaveDataIntoES(esClient *elastic.Client, indexName string, typeName string, sinkData interface{}) error { | ||
| if indexName == "" || typeName == "" || sinkData == nil { | ||
| return nil | ||
| } | ||
| // Use the IndexExists service to check if a specified index exists. | ||
| exists, err := esClient.IndexExists(indexName).Do() | ||
| if err != nil { | ||
| return err | ||
| } | ||
| if !exists { | ||
| // Create a new index. | ||
| createIndex, err := esClient.CreateIndex(indexName).Do() | ||
| if err != nil { | ||
| return err | ||
| } | ||
| if !createIndex.Acknowledged { | ||
| return fmt.Errorf("failed to create Index in ES cluster: %s", err) | ||
| } | ||
| } | ||
| indexID := uuid.NewUUID() | ||
| _, err = esClient.Index(). | ||
| Index(indexName). | ||
| Type(typeName). | ||
| Id(string(indexID)). | ||
| BodyJson(sinkData). | ||
| Do() | ||
| if err != nil { | ||
| return err | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| func CreateElasticSearchConfig(uri *url.URL) (*ElasticSearchConfig, error) { | ||
|
|
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| var esConfig ElasticSearchConfig | ||
| opts, err := url.ParseQuery(uri.RawQuery) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("failed to parser url's query string: %s", err) | ||
| } | ||
|
|
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| // set the index for es,the default value is "heapster" | ||
| esConfig.Index = ESIndex | ||
| if len(opts["index"]) > 0 { | ||
| esConfig.Index = opts["index"][0] | ||
| } | ||
|
|
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| // If the ES cluster needs authentication, the username and secret | ||
| // should be set in sink config.Else, set the Authenticate flag to false | ||
| esConfig.NeedAuthen = false | ||
| if len(opts["esUserName"]) > 0 && len(opts["esUserSecret"]) > 0 { | ||
| esConfig.EsUserName = opts["esUserName"][0] | ||
| esConfig.NeedAuthen = true | ||
| } | ||
|
|
||
| // set the URL endpoints of the ES's nodes. Notice that | ||
| // when sniffing is enabled, these URLs are used to initially sniff the | ||
| // cluster on startup. | ||
| if len(opts["nodes"]) < 1 { | ||
| return nil, fmt.Errorf("There is no node assigned for connecting ES cluster") | ||
| } | ||
| esConfig.EsNodes = append(esConfig.EsNodes, opts["nodes"]...) | ||
| glog.V(2).Infof("configing elasticsearch sink with ES's nodes - %v", esConfig.EsNodes) | ||
|
|
||
| var client *(elastic.Client) | ||
| if esConfig.NeedAuthen == false { | ||
| client, err = elastic.NewClient(elastic.SetURL(esConfig.EsNodes...)) | ||
| } else { | ||
| client, err = elastic.NewClient(elastic.SetBasicAuth(esConfig.EsUserName, esConfig.EsUserSecret), elastic.SetURL(esConfig.EsNodes...)) | ||
| } | ||
|
|
||
| if err != nil { | ||
| return nil, fmt.Errorf("failed to create ElasticSearch client: %v", err) | ||
| } | ||
| esConfig.EsClient = client | ||
| glog.V(2).Infof("elasticsearch sink configure successfully") | ||
| return &esConfig, nil | ||
| } |
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