90 lines
2.1 KiB
Go
90 lines
2.1 KiB
Go
package v5
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import (
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"bytes"
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"context"
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"encoding/json"
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"fmt"
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"github.com/elastic/go-elasticsearch/v5"
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"github.com/elastic/go-elasticsearch/v5/esapi"
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"io/ioutil"
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"time"
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)
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type Elastic struct {
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client *elasticsearch.Client
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index string
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}
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func New(address string, index string) (*Elastic, error) {
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client, err := elasticsearch.NewClient(elasticsearch.Config{
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Addresses: []string{address},
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})
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return &Elastic{client: client, index: index}, err
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}
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func (e *Elastic) Search(indices string, body []byte, scroll bool) ([]byte, error) {
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opts := []func(*esapi.SearchRequest){
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e.client.Search.WithContext(context.Background()),
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e.client.Search.WithIndex(indices),
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e.client.Search.WithIgnoreUnavailable(true),
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e.client.Search.WithBody(bytes.NewBuffer(body)),
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}
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if scroll {
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opts = append(opts, e.client.Search.WithScroll(time.Minute))
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}
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response, err := e.client.Search(opts...)
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if err != nil {
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return nil, err
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}
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defer response.Body.Close()
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if response.IsError() {
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return nil, parseError(response)
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}
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return ioutil.ReadAll(response.Body)
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}
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func (e *Elastic) Scroll(id string) ([]byte, error) {
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response, err := e.client.Scroll(
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e.client.Scroll.WithContext(context.Background()),
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e.client.Scroll.WithScrollID(id),
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e.client.Scroll.WithScroll(time.Minute))
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if err != nil {
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return nil, err
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}
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defer response.Body.Close()
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if response.IsError() {
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return nil, parseError(response)
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}
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return ioutil.ReadAll(response.Body)
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}
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func (e *Elastic) ClearScroll(scrollId string) {
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response, _ := e.client.ClearScroll(
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e.client.ClearScroll.WithContext(context.Background()),
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e.client.ClearScroll.WithScrollID(scrollId))
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defer response.Body.Close()
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}
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func (e *Elastic) GetTotalHitCount(v interface{}) int64 {
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f, _ := v.(float64)
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return int64(f)
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}
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func parseError(response *esapi.Response) error {
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var e map[string]interface{}
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if err := json.NewDecoder(response.Body).Decode(&e); err != nil {
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return err
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} else {
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// Print the response status and error information.
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e, _ := e["error"].(map[string]interface{})
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return fmt.Errorf("type: %v, reason: %v", e["type"], e["reason"])
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}
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}
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