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232 lines
6.3 KiB
Go
232 lines
6.3 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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"encoding/json"
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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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// IndicesShrinkService allows you to shrink an existing index into a
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// new index with fewer primary shards.
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//
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// For further details, see
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// https://www.elastic.co/guide/en/elasticsearch/reference/7.0/indices-shrink-index.html.
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type IndicesShrinkService 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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source string
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target string
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masterTimeout string
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timeout string
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waitForActiveShards string
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bodyJson interface{}
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bodyString string
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}
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// NewIndicesShrinkService creates a new IndicesShrinkService.
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func NewIndicesShrinkService(client *Client) *IndicesShrinkService {
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return &IndicesShrinkService{
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client: client,
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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 *IndicesShrinkService) Pretty(pretty bool) *IndicesShrinkService {
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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 *IndicesShrinkService) Human(human bool) *IndicesShrinkService {
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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 *IndicesShrinkService) ErrorTrace(errorTrace bool) *IndicesShrinkService {
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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 *IndicesShrinkService) FilterPath(filterPath ...string) *IndicesShrinkService {
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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 *IndicesShrinkService) Header(name string, value string) *IndicesShrinkService {
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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 *IndicesShrinkService) Headers(headers http.Header) *IndicesShrinkService {
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s.headers = headers
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return s
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}
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// Source is the name of the source index to shrink.
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func (s *IndicesShrinkService) Source(source string) *IndicesShrinkService {
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s.source = source
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return s
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}
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// Target is the name of the target index to shrink into.
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func (s *IndicesShrinkService) Target(target string) *IndicesShrinkService {
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s.target = target
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return s
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}
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// MasterTimeout specifies the timeout for connection to master.
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func (s *IndicesShrinkService) MasterTimeout(masterTimeout string) *IndicesShrinkService {
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s.masterTimeout = masterTimeout
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return s
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}
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// Timeout is an explicit operation timeout.
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func (s *IndicesShrinkService) Timeout(timeout string) *IndicesShrinkService {
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s.timeout = timeout
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return s
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}
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// WaitForActiveShards sets the number of active shards to wait for on
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// the shrunken index before the operation returns.
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func (s *IndicesShrinkService) WaitForActiveShards(waitForActiveShards string) *IndicesShrinkService {
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s.waitForActiveShards = waitForActiveShards
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return s
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}
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// BodyJson is the configuration for the target index (`settings` and `aliases`)
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// defined as a JSON-serializable instance to be sent as the request body.
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func (s *IndicesShrinkService) BodyJson(body interface{}) *IndicesShrinkService {
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s.bodyJson = body
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return s
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}
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// BodyString is the configuration for the target index (`settings` and `aliases`)
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// defined as a string to send as the request body.
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func (s *IndicesShrinkService) BodyString(body string) *IndicesShrinkService {
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s.bodyString = body
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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 *IndicesShrinkService) buildURL() (string, url.Values, error) {
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// Build URL
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path, err := uritemplates.Expand("/{source}/_shrink/{target}", map[string]string{
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"source": s.source,
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"target": s.target,
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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.masterTimeout != "" {
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params.Set("master_timeout", s.masterTimeout)
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}
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if s.timeout != "" {
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params.Set("timeout", s.timeout)
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}
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if s.waitForActiveShards != "" {
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params.Set("wait_for_active_shards", s.waitForActiveShards)
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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 *IndicesShrinkService) Validate() error {
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var invalid []string
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if s.source == "" {
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invalid = append(invalid, "Source")
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}
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if s.target == "" {
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invalid = append(invalid, "Target")
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}
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if len(invalid) > 0 {
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return fmt.Errorf("missing required fields: %v", invalid)
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}
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return nil
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}
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// Do executes the operation.
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func (s *IndicesShrinkService) Do(ctx context.Context) (*IndicesShrinkResponse, 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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// Setup HTTP request body
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var body interface{}
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if s.bodyJson != nil {
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body = s.bodyJson
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} else if s.bodyString != "" {
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body = s.bodyString
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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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Body: body,
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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(IndicesShrinkResponse)
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if err := json.Unmarshal(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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// IndicesShrinkResponse is the response of IndicesShrinkService.Do.
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type IndicesShrinkResponse struct {
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Acknowledged bool `json:"acknowledged"`
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ShardsAcknowledged bool `json:"shards_acknowledged"`
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Index string `json:"index,omitempty"`
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}
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