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.
203 lines
5.4 KiB
Go
203 lines
5.4 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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"gopkg.in/olivere/elastic.v5/uritemplates"
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)
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// IndicesGetService retrieves information about one or more indices.
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//
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// See https://www.elastic.co/guide/en/elasticsearch/reference/5.2/indices-get-index.html
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// for more details.
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type IndicesGetService struct {
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client *Client
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pretty bool
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index []string
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feature []string
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local *bool
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ignoreUnavailable *bool
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allowNoIndices *bool
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expandWildcards string
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flatSettings *bool
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human *bool
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}
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// NewIndicesGetService creates a new IndicesGetService.
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func NewIndicesGetService(client *Client) *IndicesGetService {
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return &IndicesGetService{
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client: client,
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index: make([]string, 0),
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feature: make([]string, 0),
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}
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}
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// Index is a list of index names.
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func (s *IndicesGetService) Index(indices ...string) *IndicesGetService {
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s.index = append(s.index, indices...)
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return s
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}
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// Feature is a list of features.
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func (s *IndicesGetService) Feature(features ...string) *IndicesGetService {
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s.feature = append(s.feature, features...)
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return s
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}
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// Local indicates whether to return local information, i.e. do not retrieve
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// the state from master node (default: false).
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func (s *IndicesGetService) Local(local bool) *IndicesGetService {
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s.local = &local
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return s
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}
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// IgnoreUnavailable indicates whether to ignore unavailable indexes (default: false).
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func (s *IndicesGetService) IgnoreUnavailable(ignoreUnavailable bool) *IndicesGetService {
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s.ignoreUnavailable = &ignoreUnavailable
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return s
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}
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// AllowNoIndices indicates whether to ignore if a wildcard expression
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// resolves to no concrete indices (default: false).
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func (s *IndicesGetService) AllowNoIndices(allowNoIndices bool) *IndicesGetService {
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s.allowNoIndices = &allowNoIndices
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return s
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}
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// ExpandWildcards indicates whether wildcard expressions should get
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// expanded to open or closed indices (default: open).
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func (s *IndicesGetService) ExpandWildcards(expandWildcards string) *IndicesGetService {
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s.expandWildcards = expandWildcards
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return s
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}
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/* Disabled because serialization would fail in that case. */
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/*
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// FlatSettings make the service return settings in flat format (default: false).
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func (s *IndicesGetService) FlatSettings(flatSettings bool) *IndicesGetService {
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s.flatSettings = &flatSettings
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return s
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}
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*/
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// Human indicates whether to return version and creation date values
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// in human-readable format (default: false).
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func (s *IndicesGetService) Human(human bool) *IndicesGetService {
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s.human = &human
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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 *IndicesGetService) Pretty(pretty bool) *IndicesGetService {
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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 *IndicesGetService) buildURL() (string, url.Values, error) {
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var err error
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var path string
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var index []string
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if len(s.index) > 0 {
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index = s.index
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} else {
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index = []string{"_all"}
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}
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if len(s.feature) > 0 {
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// Build URL
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path, err = uritemplates.Expand("/{index}/{feature}", map[string]string{
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"index": strings.Join(index, ","),
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"feature": strings.Join(s.feature, ","),
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})
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} else {
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// Build URL
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path, err = uritemplates.Expand("/{index}", map[string]string{
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"index": strings.Join(index, ","),
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})
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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.expandWildcards != "" {
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params.Set("expand_wildcards", s.expandWildcards)
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}
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if s.flatSettings != nil {
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params.Set("flat_settings", fmt.Sprintf("%v", *s.flatSettings))
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}
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if s.human != nil {
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params.Set("human", fmt.Sprintf("%v", *s.human))
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}
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if s.local != nil {
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params.Set("local", fmt.Sprintf("%v", *s.local))
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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.allowNoIndices != nil {
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params.Set("allow_no_indices", fmt.Sprintf("%v", *s.allowNoIndices))
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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 *IndicesGetService) Validate() error {
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var invalid []string
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if len(s.index) == 0 {
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invalid = append(invalid, "Index")
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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 *IndicesGetService) Do(ctx context.Context) (map[string]*IndicesGetResponse, 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, "GET", path, params, nil)
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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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var ret map[string]*IndicesGetResponse
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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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// IndicesGetResponse is part of the response of IndicesGetService.Do.
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type IndicesGetResponse struct {
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Aliases map[string]interface{} `json:"aliases"`
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Mappings map[string]interface{} `json:"mappings"`
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Settings map[string]interface{} `json:"settings"`
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Warmers map[string]interface{} `json:"warmers"`
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}
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