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.
186 lines
5.3 KiB
Go
186 lines
5.3 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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"strings"
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)
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// SimpleQueryStringQuery is a query that uses the SimpleQueryParser
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// to parse its context. Unlike the regular query_string query,
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// the simple_query_string query will never throw an exception,
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// and discards invalid parts of the query.
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//
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// For more details, see
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// https://www.elastic.co/guide/en/elasticsearch/reference/5.2/query-dsl-simple-query-string-query.html
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type SimpleQueryStringQuery struct {
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queryText string
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analyzer string
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operator string
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fields []string
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fieldBoosts map[string]*float64
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minimumShouldMatch string
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flags string
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boost *float64
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lowercaseExpandedTerms *bool
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lenient *bool
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analyzeWildcard *bool
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locale string
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queryName string
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}
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// NewSimpleQueryStringQuery creates and initializes a new SimpleQueryStringQuery.
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func NewSimpleQueryStringQuery(text string) *SimpleQueryStringQuery {
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return &SimpleQueryStringQuery{
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queryText: text,
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fields: make([]string, 0),
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fieldBoosts: make(map[string]*float64),
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}
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}
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// Field adds a field to run the query against.
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func (q *SimpleQueryStringQuery) Field(field string) *SimpleQueryStringQuery {
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q.fields = append(q.fields, field)
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return q
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}
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// Field adds a field to run the query against with a specific boost.
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func (q *SimpleQueryStringQuery) FieldWithBoost(field string, boost float64) *SimpleQueryStringQuery {
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q.fields = append(q.fields, field)
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q.fieldBoosts[field] = &boost
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return q
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}
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// Boost sets the boost for this query.
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func (q *SimpleQueryStringQuery) Boost(boost float64) *SimpleQueryStringQuery {
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q.boost = &boost
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return q
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}
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// QueryName sets the query name for the filter that can be used when
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// searching for matched_filters per hit.
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func (q *SimpleQueryStringQuery) QueryName(queryName string) *SimpleQueryStringQuery {
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q.queryName = queryName
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return q
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}
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// Analyzer specifies the analyzer to use for the query.
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func (q *SimpleQueryStringQuery) Analyzer(analyzer string) *SimpleQueryStringQuery {
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q.analyzer = analyzer
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return q
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}
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// DefaultOperator specifies the default operator for the query.
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func (q *SimpleQueryStringQuery) DefaultOperator(defaultOperator string) *SimpleQueryStringQuery {
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q.operator = defaultOperator
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return q
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}
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// Flags sets the flags for the query.
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func (q *SimpleQueryStringQuery) Flags(flags string) *SimpleQueryStringQuery {
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q.flags = flags
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return q
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}
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// LowercaseExpandedTerms indicates whether terms of wildcard, prefix, fuzzy
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// and range queries are automatically lower-cased or not. Default is true.
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func (q *SimpleQueryStringQuery) LowercaseExpandedTerms(lowercaseExpandedTerms bool) *SimpleQueryStringQuery {
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q.lowercaseExpandedTerms = &lowercaseExpandedTerms
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return q
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}
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func (q *SimpleQueryStringQuery) Locale(locale string) *SimpleQueryStringQuery {
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q.locale = locale
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return q
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}
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// Lenient indicates whether the query string parser should be lenient
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// when parsing field values. It defaults to the index setting and if not
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// set, defaults to false.
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func (q *SimpleQueryStringQuery) Lenient(lenient bool) *SimpleQueryStringQuery {
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q.lenient = &lenient
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return q
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}
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// AnalyzeWildcard indicates whether to enabled analysis on wildcard and prefix queries.
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func (q *SimpleQueryStringQuery) AnalyzeWildcard(analyzeWildcard bool) *SimpleQueryStringQuery {
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q.analyzeWildcard = &analyzeWildcard
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return q
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}
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func (q *SimpleQueryStringQuery) MinimumShouldMatch(minimumShouldMatch string) *SimpleQueryStringQuery {
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q.minimumShouldMatch = minimumShouldMatch
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return q
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}
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// Source returns JSON for the query.
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func (q *SimpleQueryStringQuery) Source() (interface{}, error) {
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// {
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// "simple_query_string" : {
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// "query" : "\"fried eggs\" +(eggplant | potato) -frittata",
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// "analyzer" : "snowball",
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// "fields" : ["body^5","_all"],
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// "default_operator" : "and"
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// }
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// }
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source := make(map[string]interface{})
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query := make(map[string]interface{})
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source["simple_query_string"] = query
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query["query"] = q.queryText
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if len(q.fields) > 0 {
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var fields []string
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for _, field := range q.fields {
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if boost, found := q.fieldBoosts[field]; found {
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if boost != nil {
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fields = append(fields, fmt.Sprintf("%s^%f", field, *boost))
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} else {
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fields = append(fields, field)
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}
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} else {
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fields = append(fields, field)
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}
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}
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query["fields"] = fields
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}
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if q.flags != "" {
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query["flags"] = q.flags
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}
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if q.analyzer != "" {
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query["analyzer"] = q.analyzer
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}
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if q.operator != "" {
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query["default_operator"] = strings.ToLower(q.operator)
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}
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if q.lowercaseExpandedTerms != nil {
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query["lowercase_expanded_terms"] = *q.lowercaseExpandedTerms
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}
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if q.lenient != nil {
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query["lenient"] = *q.lenient
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}
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if q.analyzeWildcard != nil {
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query["analyze_wildcard"] = *q.analyzeWildcard
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}
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if q.locale != "" {
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query["locale"] = q.locale
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}
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if q.queryName != "" {
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query["_name"] = q.queryName
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}
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if q.minimumShouldMatch != "" {
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query["minimum_should_match"] = q.minimumShouldMatch
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}
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if q.boost != nil {
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query["boost"] = *q.boost
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}
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return source, nil
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}
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