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236 lines
6.9 KiB
Go
236 lines
6.9 KiB
Go
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// 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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"fmt"
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"net/http"
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"net/url"
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"strings"
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"github.com/olivere/elastic/v7/uritemplates"
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)
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// IndicesForcemergeService allows to force merging of one or more indices.
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// The merge relates to the number of segments a Lucene index holds
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// within each shard. The force merge operation allows to reduce the number
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// of segments by merging them.
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//
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// See http://www.elastic.co/guide/en/elasticsearch/reference/7.0/indices-forcemerge.html
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// for more information.
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type IndicesForcemergeService struct {
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client *Client
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pretty *bool // pretty format the returned JSON response
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human *bool // return human readable values for statistics
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errorTrace *bool // include the stack trace of returned errors
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filterPath []string // list of filters used to reduce the response
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headers http.Header // custom request-level HTTP headers
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index []string
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allowNoIndices *bool
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expandWildcards string
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flush *bool
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ignoreUnavailable *bool
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maxNumSegments interface{}
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onlyExpungeDeletes *bool
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}
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// NewIndicesForcemergeService creates a new IndicesForcemergeService.
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func NewIndicesForcemergeService(client *Client) *IndicesForcemergeService {
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return &IndicesForcemergeService{
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client: client,
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index: make([]string, 0),
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}
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}
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// Pretty tells Elasticsearch whether to return a formatted JSON response.
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func (s *IndicesForcemergeService) Pretty(pretty bool) *IndicesForcemergeService {
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s.pretty = &pretty
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return s
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}
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// Human specifies whether human readable values should be returned in
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// the JSON response, e.g. "7.5mb".
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func (s *IndicesForcemergeService) Human(human bool) *IndicesForcemergeService {
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s.human = &human
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return s
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}
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// ErrorTrace specifies whether to include the stack trace of returned errors.
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func (s *IndicesForcemergeService) ErrorTrace(errorTrace bool) *IndicesForcemergeService {
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s.errorTrace = &errorTrace
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return s
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}
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// FilterPath specifies a list of filters used to reduce the response.
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func (s *IndicesForcemergeService) FilterPath(filterPath ...string) *IndicesForcemergeService {
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s.filterPath = filterPath
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return s
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}
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// Header adds a header to the request.
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func (s *IndicesForcemergeService) Header(name string, value string) *IndicesForcemergeService {
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if s.headers == nil {
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s.headers = http.Header{}
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}
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s.headers.Add(name, value)
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return s
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}
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// Headers specifies the headers of the request.
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func (s *IndicesForcemergeService) Headers(headers http.Header) *IndicesForcemergeService {
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s.headers = headers
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return s
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}
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// Index is a list of index names; use `_all` or empty string to perform
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// the operation on all indices.
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func (s *IndicesForcemergeService) Index(index ...string) *IndicesForcemergeService {
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if s.index == nil {
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s.index = make([]string, 0)
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}
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s.index = append(s.index, index...)
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return s
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}
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// AllowNoIndices indicates whether to ignore if a wildcard indices
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// expression resolves into no concrete indices.
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// (This includes `_all` string or when no indices have been specified).
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func (s *IndicesForcemergeService) AllowNoIndices(allowNoIndices bool) *IndicesForcemergeService {
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s.allowNoIndices = &allowNoIndices
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return s
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}
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// ExpandWildcards indicates whether to expand wildcard expression to
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// concrete indices that are open, closed or both..
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func (s *IndicesForcemergeService) ExpandWildcards(expandWildcards string) *IndicesForcemergeService {
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s.expandWildcards = expandWildcards
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return s
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}
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// Flush specifies whether the index should be flushed after performing
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// the operation (default: true).
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func (s *IndicesForcemergeService) Flush(flush bool) *IndicesForcemergeService {
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s.flush = &flush
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return s
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}
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// IgnoreUnavailable indicates whether specified concrete indices should
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// be ignored when unavailable (missing or closed).
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func (s *IndicesForcemergeService) IgnoreUnavailable(ignoreUnavailable bool) *IndicesForcemergeService {
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s.ignoreUnavailable = &ignoreUnavailable
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return s
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}
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// MaxNumSegments specifies the number of segments the index should be
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// merged into (default: dynamic).
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func (s *IndicesForcemergeService) MaxNumSegments(maxNumSegments interface{}) *IndicesForcemergeService {
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s.maxNumSegments = maxNumSegments
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return s
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}
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// OnlyExpungeDeletes specifies whether the operation should only expunge
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// deleted documents.
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func (s *IndicesForcemergeService) OnlyExpungeDeletes(onlyExpungeDeletes bool) *IndicesForcemergeService {
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s.onlyExpungeDeletes = &onlyExpungeDeletes
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return s
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}
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// buildURL builds the URL for the operation.
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func (s *IndicesForcemergeService) buildURL() (string, url.Values, error) {
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var err error
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var path string
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// Build URL
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if len(s.index) > 0 {
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path, err = uritemplates.Expand("/{index}/_forcemerge", map[string]string{
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"index": strings.Join(s.index, ","),
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})
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} else {
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path = "/_forcemerge"
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}
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if err != nil {
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return "", url.Values{}, err
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}
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// Add query string parameters
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params := url.Values{}
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if v := s.pretty; v != nil {
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params.Set("pretty", fmt.Sprint(*v))
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}
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if v := s.human; v != nil {
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params.Set("human", fmt.Sprint(*v))
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}
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if v := s.errorTrace; v != nil {
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params.Set("error_trace", fmt.Sprint(*v))
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}
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if len(s.filterPath) > 0 {
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params.Set("filter_path", strings.Join(s.filterPath, ","))
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}
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if s.allowNoIndices != nil {
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params.Set("allow_no_indices", fmt.Sprintf("%v", *s.allowNoIndices))
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}
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if s.expandWildcards != "" {
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params.Set("expand_wildcards", s.expandWildcards)
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}
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if s.flush != nil {
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params.Set("flush", fmt.Sprintf("%v", *s.flush))
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}
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if s.ignoreUnavailable != nil {
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params.Set("ignore_unavailable", fmt.Sprintf("%v", *s.ignoreUnavailable))
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}
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if s.maxNumSegments != nil {
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params.Set("max_num_segments", fmt.Sprintf("%v", s.maxNumSegments))
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}
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if s.onlyExpungeDeletes != nil {
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params.Set("only_expunge_deletes", fmt.Sprintf("%v", *s.onlyExpungeDeletes))
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}
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return path, params, nil
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}
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// Validate checks if the operation is valid.
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func (s *IndicesForcemergeService) Validate() error {
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return nil
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}
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// Do executes the operation.
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func (s *IndicesForcemergeService) Do(ctx context.Context) (*IndicesForcemergeResponse, error) {
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// Check pre-conditions
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if err := s.Validate(); err != nil {
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return nil, err
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}
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// Get URL for request
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path, params, err := s.buildURL()
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if err != nil {
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return nil, err
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}
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// Get HTTP response
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res, err := s.client.PerformRequest(ctx, PerformRequestOptions{
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Method: "POST",
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Path: path,
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Params: params,
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Headers: s.headers,
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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 operation response
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ret := new(IndicesForcemergeResponse)
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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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// IndicesForcemergeResponse is the response of IndicesForcemergeService.Do.
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type IndicesForcemergeResponse struct {
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Shards *ShardsInfo `json:"_shards"`
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}
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