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.
280 lines
7.9 KiB
Go
280 lines
7.9 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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"golang.org/x/net/context"
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"gopkg.in/olivere/elastic.v5/uritemplates"
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)
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// IndicesAnalyzeService performs the analysis process on a text and returns
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// the tokens breakdown of the text.
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//
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// See https://www.elastic.co/guide/en/elasticsearch/reference/5.2/indices-analyze.html
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// for detail.
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type IndicesAnalyzeService struct {
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client *Client
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pretty bool
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index string
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request *IndicesAnalyzeRequest
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format string
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preferLocal *bool
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bodyJson interface{}
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bodyString string
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}
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// NewIndicesAnalyzeService creates a new IndicesAnalyzeService.
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func NewIndicesAnalyzeService(client *Client) *IndicesAnalyzeService {
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return &IndicesAnalyzeService{
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client: client,
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request: new(IndicesAnalyzeRequest),
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}
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}
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// Index is the name of the index to scope the operation.
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func (s *IndicesAnalyzeService) Index(index string) *IndicesAnalyzeService {
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s.index = index
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return s
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}
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// Format of the output.
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func (s *IndicesAnalyzeService) Format(format string) *IndicesAnalyzeService {
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s.format = format
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return s
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}
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// PreferLocal, when true, specifies that a local shard should be used
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// if available. When false, a random shard is used (default: true).
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func (s *IndicesAnalyzeService) PreferLocal(preferLocal bool) *IndicesAnalyzeService {
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s.preferLocal = &preferLocal
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return s
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}
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// Request passes the analyze request to use.
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func (s *IndicesAnalyzeService) Request(request *IndicesAnalyzeRequest) *IndicesAnalyzeService {
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if request == nil {
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s.request = new(IndicesAnalyzeRequest)
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} else {
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s.request = request
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}
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return s
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}
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// Analyzer is the name of the analyzer to use.
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func (s *IndicesAnalyzeService) Analyzer(analyzer string) *IndicesAnalyzeService {
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s.request.Analyzer = analyzer
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return s
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}
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// Attributes is a list of token attributes to output; this parameter works
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// only with explain=true.
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func (s *IndicesAnalyzeService) Attributes(attributes ...string) *IndicesAnalyzeService {
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s.request.Attributes = attributes
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return s
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}
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// CharFilter is a list of character filters to use for the analysis.
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func (s *IndicesAnalyzeService) CharFilter(charFilter ...string) *IndicesAnalyzeService {
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s.request.CharFilter = charFilter
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return s
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}
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// Explain, when true, outputs more advanced details (default: false).
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func (s *IndicesAnalyzeService) Explain(explain bool) *IndicesAnalyzeService {
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s.request.Explain = explain
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return s
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}
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// Field specifies to use a specific analyzer configured for this field (instead of passing the analyzer name).
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func (s *IndicesAnalyzeService) Field(field string) *IndicesAnalyzeService {
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s.request.Field = field
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return s
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}
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// Filter is a list of filters to use for the analysis.
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func (s *IndicesAnalyzeService) Filter(filter ...string) *IndicesAnalyzeService {
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s.request.Filter = filter
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return s
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}
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// Text is the text on which the analysis should be performed (when request body is not used).
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func (s *IndicesAnalyzeService) Text(text ...string) *IndicesAnalyzeService {
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s.request.Text = text
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return s
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}
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// Tokenizer is the name of the tokenizer to use for the analysis.
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func (s *IndicesAnalyzeService) Tokenizer(tokenizer string) *IndicesAnalyzeService {
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s.request.Tokenizer = tokenizer
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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 *IndicesAnalyzeService) Pretty(pretty bool) *IndicesAnalyzeService {
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s.pretty = pretty
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return s
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}
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// BodyJson is the text on which the analysis should be performed.
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func (s *IndicesAnalyzeService) BodyJson(body interface{}) *IndicesAnalyzeService {
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s.bodyJson = body
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return s
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}
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// BodyString is the text on which the analysis should be performed.
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func (s *IndicesAnalyzeService) BodyString(body string) *IndicesAnalyzeService {
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s.bodyString = body
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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 *IndicesAnalyzeService) buildURL() (string, url.Values, error) {
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// Build URL
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var err error
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var path string
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if s.index == "" {
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path = "/_analyze"
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} else {
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path, err = uritemplates.Expand("/{index}/_analyze", map[string]string{
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"index": s.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.format != "" {
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params.Set("format", s.format)
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}
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if s.preferLocal != nil {
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params.Set("prefer_local", fmt.Sprintf("%v", *s.preferLocal))
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}
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return path, params, nil
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}
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// Do will execute the request with the given context.
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func (s *IndicesAnalyzeService) Do(ctx context.Context) (*IndicesAnalyzeResponse, 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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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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var body interface{}
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if s.bodyJson != nil {
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body = s.bodyJson
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} else if s.bodyString != "" {
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body = s.bodyString
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} else {
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// Request parameters are deprecated in 5.1.1, and we must use a JSON
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// structure in the body to pass the parameters.
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// See https://www.elastic.co/guide/en/elasticsearch/reference/5.2/indices-analyze.html
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body = s.request
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}
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res, err := s.client.PerformRequest(ctx, "POST", 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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ret := new(IndicesAnalyzeResponse)
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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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func (s *IndicesAnalyzeService) Validate() error {
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var invalid []string
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if s.bodyJson == nil && s.bodyString == "" {
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if len(s.request.Text) == 0 {
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invalid = append(invalid, "Text")
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}
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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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// IndicesAnalyzeRequest specifies the parameters of the analyze request.
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type IndicesAnalyzeRequest struct {
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Text []string `json:"text,omitempty"`
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Analyzer string `json:"analyzer,omitempty"`
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Tokenizer string `json:"tokenizer,omitempty"`
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Filter []string `json:"filter,omitempty"`
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CharFilter []string `json:"char_filter,omitempty"`
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Field string `json:"field,omitempty"`
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Explain bool `json:"explain,omitempty"`
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Attributes []string `json:"attributes,omitempty"`
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}
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type IndicesAnalyzeResponse struct {
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Tokens []IndicesAnalyzeResponseToken `json:"tokens"` // json part for normal message
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Detail IndicesAnalyzeResponseDetail `json:"detail"` // json part for verbose message of explain request
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}
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type IndicesAnalyzeResponseToken struct {
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Token string `json:"token"`
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StartOffset int `json:"start_offset"`
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EndOffset int `json:"end_offset"`
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Type string `json:"type"`
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Position int `json:"position"`
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}
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type IndicesAnalyzeResponseDetail struct {
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CustomAnalyzer bool `json:"custom_analyzer"`
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Charfilters []interface{} `json:"charfilters"`
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Analyzer struct {
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Name string `json:"name"`
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Tokens []struct {
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Token string `json:"token"`
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StartOffset int `json:"start_offset"`
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EndOffset int `json:"end_offset"`
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Type string `json:"type"`
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Position int `json:"position"`
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Bytes string `json:"bytes"`
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PositionLength int `json:"positionLength"`
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} `json:"tokens"`
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} `json:"analyzer"`
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Tokenizer struct {
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Name string `json:"name"`
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Tokens []struct {
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Token string `json:"token"`
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StartOffset int `json:"start_offset"`
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EndOffset int `json:"end_offset"`
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Type string `json:"type"`
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Position int `json:"position"`
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} `json:"tokens"`
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} `json:"tokenizer"`
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Tokenfilters []struct {
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Name string `json:"name"`
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Tokens []struct {
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Token string `json:"token"`
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StartOffset int `json:"start_offset"`
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EndOffset int `json:"end_offset"`
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Type string `json:"type"`
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Position int `json:"position"`
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Keyword bool `json:"keyword"`
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} `json:"tokens"`
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} `json:"tokenfilters"`
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}
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