This change adds `access` format support for notifications to a Elasticsearch server, and it refactors `namespace` format support. In the case of `access` format, for each event in Minio, a JSON document is inserted into Elasticsearch with its timestamp set to the event's timestamp, and with the ID generated automatically by elasticsearch. No events are modified or deleted in this mode. In the case of `namespace` format, for each event in Minio, a JSON document is keyed together by the bucket and object name is updated in Elasticsearch. In the case of an object being created or over-written in Minio, a new document or an existing document is inserted into the Elasticsearch index. If an object is deleted in Minio, the corresponding document is deleted from the Elasticsearch index. Additionally, this change upgrades Elasticsearch support to the 5.x series. This is a breaking change, and users of previous elasticsearch versions should upgrade. Also updates documentation on Elasticsearch notification target usage and has a link to an elasticsearch upgrade guide. This is the last patch that finally resolves #3928.
174 lines
4.6 KiB
Go
174 lines
4.6 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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"encoding/json"
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"fmt"
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"net/url"
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"golang.org/x/net/context"
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"gopkg.in/olivere/elastic.v5/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/5.2/indices-shrink-index.html.
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type IndicesShrinkService struct {
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client *Client
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pretty bool
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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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// 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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// Pretty indicates that the JSON response be indented and human readable.
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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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// 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 s.pretty {
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params.Set("pretty", "1")
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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, "POST", path, params, body)
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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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}
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