a2a8d54bb6
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.
103 lines
2.5 KiB
Go
103 lines
2.5 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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"fmt"
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"net/url"
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"strings"
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"golang.org/x/net/context"
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)
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// ClearScrollService clears one or more scroll contexts by their ids.
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//
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// See https://www.elastic.co/guide/en/elasticsearch/reference/5.2/search-request-scroll.html#_clear_scroll_api
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// for details.
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type ClearScrollService struct {
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client *Client
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pretty bool
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scrollId []string
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}
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// NewClearScrollService creates a new ClearScrollService.
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func NewClearScrollService(client *Client) *ClearScrollService {
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return &ClearScrollService{
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client: client,
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scrollId: make([]string, 0),
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}
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}
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// ScrollId is a list of scroll IDs to clear.
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// Use _all to clear all search contexts.
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func (s *ClearScrollService) ScrollId(scrollIds ...string) *ClearScrollService {
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s.scrollId = append(s.scrollId, scrollIds...)
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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 *ClearScrollService) Pretty(pretty bool) *ClearScrollService {
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s.pretty = pretty
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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 *ClearScrollService) buildURL() (string, url.Values, error) {
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// Build URL
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path := "/_search/scroll/"
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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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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 *ClearScrollService) Validate() error {
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var invalid []string
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if len(s.scrollId) == 0 {
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invalid = append(invalid, "ScrollId")
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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 *ClearScrollService) Do(ctx context.Context) (*ClearScrollResponse, 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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body := strings.Join(s.scrollId, ",")
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// Get HTTP response
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res, err := s.client.PerformRequest(ctx, "DELETE", 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(ClearScrollResponse)
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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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// ClearScrollResponse is the response of ClearScrollService.Do.
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type ClearScrollResponse struct {
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}
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