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.
138 lines
3.4 KiB
Go
138 lines
3.4 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 "errors"
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// CompletionSuggester is a fast suggester for e.g. type-ahead completion.
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// See https://www.elastic.co/guide/en/elasticsearch/reference/5.2/search-suggesters-completion.html
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// for more details.
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type CompletionSuggester struct {
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Suggester
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name string
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text string
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field string
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analyzer string
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size *int
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shardSize *int
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contextQueries []SuggesterContextQuery
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}
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// Creates a new completion suggester.
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func NewCompletionSuggester(name string) *CompletionSuggester {
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return &CompletionSuggester{
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name: name,
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contextQueries: make([]SuggesterContextQuery, 0),
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}
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}
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func (q *CompletionSuggester) Name() string {
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return q.name
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}
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func (q *CompletionSuggester) Text(text string) *CompletionSuggester {
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q.text = text
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return q
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}
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func (q *CompletionSuggester) Field(field string) *CompletionSuggester {
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q.field = field
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return q
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}
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func (q *CompletionSuggester) Analyzer(analyzer string) *CompletionSuggester {
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q.analyzer = analyzer
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return q
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}
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func (q *CompletionSuggester) Size(size int) *CompletionSuggester {
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q.size = &size
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return q
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}
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func (q *CompletionSuggester) ShardSize(shardSize int) *CompletionSuggester {
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q.shardSize = &shardSize
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return q
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}
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func (q *CompletionSuggester) ContextQuery(query SuggesterContextQuery) *CompletionSuggester {
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q.contextQueries = append(q.contextQueries, query)
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return q
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}
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func (q *CompletionSuggester) ContextQueries(queries ...SuggesterContextQuery) *CompletionSuggester {
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q.contextQueries = append(q.contextQueries, queries...)
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return q
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}
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// completionSuggesterRequest is necessary because the order in which
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// the JSON elements are routed to Elasticsearch is relevant.
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// We got into trouble when using plain maps because the text element
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// needs to go before the completion element.
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type completionSuggesterRequest struct {
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Text string `json:"text"`
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Completion interface{} `json:"completion"`
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}
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// Creates the source for the completion suggester.
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func (q *CompletionSuggester) Source(includeName bool) (interface{}, error) {
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cs := &completionSuggesterRequest{}
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if q.text != "" {
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cs.Text = q.text
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}
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suggester := make(map[string]interface{})
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cs.Completion = suggester
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if q.analyzer != "" {
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suggester["analyzer"] = q.analyzer
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}
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if q.field != "" {
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suggester["field"] = q.field
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}
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if q.size != nil {
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suggester["size"] = *q.size
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}
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if q.shardSize != nil {
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suggester["shard_size"] = *q.shardSize
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}
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switch len(q.contextQueries) {
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case 0:
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case 1:
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src, err := q.contextQueries[0].Source()
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if err != nil {
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return nil, err
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}
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suggester["context"] = src
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default:
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ctxq := make(map[string]interface{})
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for _, query := range q.contextQueries {
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src, err := query.Source()
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if err != nil {
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return nil, err
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}
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// Merge the dictionary into ctxq
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m, ok := src.(map[string]interface{})
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if !ok {
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return nil, errors.New("elastic: context query is not a map")
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}
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for k, v := range m {
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ctxq[k] = v
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}
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}
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suggester["context"] = ctxq
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}
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// TODO(oe) Add completion-suggester specific parameters here
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if !includeName {
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return cs, nil
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}
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source := make(map[string]interface{})
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source[q.name] = cs
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return source, nil
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}
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