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.
202 lines
5.2 KiB
Go
202 lines
5.2 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 "strings"
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// SearchRequest combines a search request and its
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// query details (see SearchSource).
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// It is used in combination with MultiSearch.
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type SearchRequest struct {
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searchType string // default in ES is "query_then_fetch"
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indices []string
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types []string
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routing *string
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preference *string
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requestCache *bool
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ignoreUnavailable *bool
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allowNoIndices *bool
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expandWildcards string
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scroll string
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source interface{}
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}
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// NewSearchRequest creates a new search request.
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func NewSearchRequest() *SearchRequest {
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return &SearchRequest{}
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}
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// SearchRequest must be one of "query_then_fetch", "query_and_fetch",
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// "scan", "count", "dfs_query_then_fetch", or "dfs_query_and_fetch".
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// Use one of the constants defined via SearchType.
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func (r *SearchRequest) SearchType(searchType string) *SearchRequest {
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r.searchType = searchType
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return r
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}
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func (r *SearchRequest) SearchTypeDfsQueryThenFetch() *SearchRequest {
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return r.SearchType("dfs_query_then_fetch")
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}
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func (r *SearchRequest) SearchTypeDfsQueryAndFetch() *SearchRequest {
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return r.SearchType("dfs_query_and_fetch")
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}
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func (r *SearchRequest) SearchTypeQueryThenFetch() *SearchRequest {
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return r.SearchType("query_then_fetch")
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}
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func (r *SearchRequest) SearchTypeQueryAndFetch() *SearchRequest {
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return r.SearchType("query_and_fetch")
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}
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func (r *SearchRequest) SearchTypeScan() *SearchRequest {
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return r.SearchType("scan")
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}
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func (r *SearchRequest) SearchTypeCount() *SearchRequest {
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return r.SearchType("count")
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}
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func (r *SearchRequest) Index(indices ...string) *SearchRequest {
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r.indices = append(r.indices, indices...)
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return r
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}
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func (r *SearchRequest) HasIndices() bool {
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return len(r.indices) > 0
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}
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func (r *SearchRequest) Type(types ...string) *SearchRequest {
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r.types = append(r.types, types...)
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return r
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}
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func (r *SearchRequest) Routing(routing string) *SearchRequest {
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r.routing = &routing
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return r
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}
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func (r *SearchRequest) Routings(routings ...string) *SearchRequest {
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if routings != nil {
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routings := strings.Join(routings, ",")
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r.routing = &routings
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} else {
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r.routing = nil
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}
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return r
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}
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func (r *SearchRequest) Preference(preference string) *SearchRequest {
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r.preference = &preference
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return r
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}
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func (r *SearchRequest) RequestCache(requestCache bool) *SearchRequest {
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r.requestCache = &requestCache
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return r
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}
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// IgnoreUnavailable indicates whether specified concrete indices should be
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// ignored when unavailable (missing or closed).
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func (s *SearchRequest) IgnoreUnavailable(ignoreUnavailable bool) *SearchRequest {
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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 indices
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// expression resolves into no concrete indices. (This includes `_all` string or when no indices have been specified).
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func (s *SearchRequest) AllowNoIndices(allowNoIndices bool) *SearchRequest {
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s.allowNoIndices = &allowNoIndices
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return s
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}
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// ExpandWildcards indicates whether to expand wildcard expression to
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// concrete indices that are open, closed or both.
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func (s *SearchRequest) ExpandWildcards(expandWildcards string) *SearchRequest {
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s.expandWildcards = expandWildcards
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return s
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}
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func (r *SearchRequest) Scroll(scroll string) *SearchRequest {
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r.scroll = scroll
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return r
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}
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func (r *SearchRequest) SearchSource(searchSource *SearchSource) *SearchRequest {
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return r.Source(searchSource)
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}
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func (r *SearchRequest) Source(source interface{}) *SearchRequest {
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switch v := source.(type) {
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case *SearchSource:
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src, err := v.Source()
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if err != nil {
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// Do not do anything in case of an error
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return r
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}
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r.source = src
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default:
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r.source = source
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}
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return r
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}
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// header is used e.g. by MultiSearch to get information about the search header
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// of one SearchRequest.
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// See https://www.elastic.co/guide/en/elasticsearch/reference/5.2/search-multi-search.html
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func (r *SearchRequest) header() interface{} {
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h := make(map[string]interface{})
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if r.searchType != "" {
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h["search_type"] = r.searchType
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}
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switch len(r.indices) {
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case 0:
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case 1:
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h["index"] = r.indices[0]
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default:
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h["indices"] = r.indices
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}
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switch len(r.types) {
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case 0:
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case 1:
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h["type"] = r.types[0]
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default:
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h["types"] = r.types
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}
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if r.routing != nil && *r.routing != "" {
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h["routing"] = *r.routing
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}
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if r.preference != nil && *r.preference != "" {
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h["preference"] = *r.preference
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}
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if r.requestCache != nil {
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h["request_cache"] = *r.requestCache
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}
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if r.ignoreUnavailable != nil {
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h["ignore_unavailable"] = *r.ignoreUnavailable
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}
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if r.allowNoIndices != nil {
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h["allow_no_indices"] = *r.allowNoIndices
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}
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if r.expandWildcards != "" {
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h["expand_wildcards"] = r.expandWildcards
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}
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if r.scroll != "" {
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h["scroll"] = r.scroll
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}
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return h
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}
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// body is used by MultiSearch to get information about the search body
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// of one SearchRequest.
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// See https://www.elastic.co/guide/en/elasticsearch/reference/5.2/search-multi-search.html
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func (r *SearchRequest) body() interface{} {
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return r.source
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}
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