117 lines
2.7 KiB
Go
117 lines
2.7 KiB
Go
// Copyright 2012-present Oliver Eilhard. All rights reserved.
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// Use of this source code is governed by a MIT-license.
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// See http://olivere.mit-license.org/license.txt for details.
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package elastic
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import (
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"context"
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"encoding/json"
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"fmt"
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"net/url"
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"strings"
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)
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// MultiSearch executes one or more searches in one roundtrip.
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type MultiSearchService struct {
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client *Client
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requests []*SearchRequest
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indices []string
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pretty bool
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maxConcurrentRequests *int
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preFilterShardSize *int
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}
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func NewMultiSearchService(client *Client) *MultiSearchService {
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builder := &MultiSearchService{
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client: client,
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}
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return builder
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}
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func (s *MultiSearchService) Add(requests ...*SearchRequest) *MultiSearchService {
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s.requests = append(s.requests, requests...)
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return s
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}
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func (s *MultiSearchService) Index(indices ...string) *MultiSearchService {
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s.indices = append(s.indices, indices...)
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return s
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}
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func (s *MultiSearchService) Pretty(pretty bool) *MultiSearchService {
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s.pretty = pretty
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return s
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}
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func (s *MultiSearchService) MaxConcurrentSearches(max int) *MultiSearchService {
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s.maxConcurrentRequests = &max
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return s
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}
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func (s *MultiSearchService) PreFilterShardSize(size int) *MultiSearchService {
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s.preFilterShardSize = &size
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return s
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}
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func (s *MultiSearchService) Do(ctx context.Context) (*MultiSearchResult, error) {
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// Build url
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path := "/_msearch"
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// Parameters
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params := make(url.Values)
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if s.pretty {
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params.Set("pretty", fmt.Sprintf("%v", s.pretty))
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}
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if v := s.maxConcurrentRequests; v != nil {
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params.Set("max_concurrent_searches", fmt.Sprintf("%v", *v))
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}
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if v := s.preFilterShardSize; v != nil {
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params.Set("pre_filter_shard_size", fmt.Sprintf("%v", *v))
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}
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// Set body
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var lines []string
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for _, sr := range s.requests {
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// Set default indices if not specified in the request
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if !sr.HasIndices() && len(s.indices) > 0 {
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sr = sr.Index(s.indices...)
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}
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header, err := json.Marshal(sr.header())
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if err != nil {
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return nil, err
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}
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body, err := sr.Body()
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if err != nil {
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return nil, err
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}
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lines = append(lines, string(header))
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lines = append(lines, body)
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}
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body := strings.Join(lines, "\n") + "\n" // add trailing \n
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// Get response
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res, err := s.client.PerformRequest(ctx, PerformRequestOptions{
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Method: "GET",
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Path: path,
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Params: params,
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Body: body,
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})
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if err != nil {
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return nil, err
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}
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// Return result
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ret := new(MultiSearchResult)
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if err := s.client.decoder.Decode(res.Body, ret); err != nil {
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return nil, err
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}
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return ret, nil
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}
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// MultiSearchResult is the outcome of running a multi-search operation.
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type MultiSearchResult struct {
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Responses []*SearchResult `json:"responses,omitempty"`
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}
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