Issue search support elasticsearch (#9428)

* Issue search support elasticsearch

* Fix lint

* Add indexer name on app.ini

* add a warnning on SearchIssuesByKeyword

* improve code

vendor/github.com/olivere/elastic/v7/ingest_simulate_pipeline.go

@@ -0,0 +1,213 @@
+// Copyright 2012-present Oliver Eilhard. All rights reserved.
+// Use of this source code is governed by a MIT-license.
+// See http://olivere.mit-license.org/license.txt for details.
+
+package elastic
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"net/url"
+	"strings"
+
+	"github.com/olivere/elastic/v7/uritemplates"
+)
+
+// IngestSimulatePipelineService executes a specific pipeline against the set of
+// documents provided in the body of the request.
+//
+// The API is documented at
+// https://www.elastic.co/guide/en/elasticsearch/reference/7.0/simulate-pipeline-api.html.
+type IngestSimulatePipelineService struct {
+	client *Client
+
+	pretty     *bool       // pretty format the returned JSON response
+	human      *bool       // return human readable values for statistics
+	errorTrace *bool       // include the stack trace of returned errors
+	filterPath []string    // list of filters used to reduce the response
+	headers    http.Header // custom request-level HTTP headers
+
+	id         string
+	verbose    *bool
+	bodyJson   interface{}
+	bodyString string
+}
+
+// NewIngestSimulatePipelineService creates a new IngestSimulatePipeline.
+func NewIngestSimulatePipelineService(client *Client) *IngestSimulatePipelineService {
+	return &IngestSimulatePipelineService{
+		client: client,
+	}
+}
+
+// Pretty tells Elasticsearch whether to return a formatted JSON response.
+func (s *IngestSimulatePipelineService) Pretty(pretty bool) *IngestSimulatePipelineService {
+	s.pretty = &pretty
+	return s
+}
+
+// Human specifies whether human readable values should be returned in
+// the JSON response, e.g. "7.5mb".
+func (s *IngestSimulatePipelineService) Human(human bool) *IngestSimulatePipelineService {
+	s.human = &human
+	return s
+}
+
+// ErrorTrace specifies whether to include the stack trace of returned errors.
+func (s *IngestSimulatePipelineService) ErrorTrace(errorTrace bool) *IngestSimulatePipelineService {
+	s.errorTrace = &errorTrace
+	return s
+}
+
+// FilterPath specifies a list of filters used to reduce the response.
+func (s *IngestSimulatePipelineService) FilterPath(filterPath ...string) *IngestSimulatePipelineService {
+	s.filterPath = filterPath
+	return s
+}
+
+// Header adds a header to the request.
+func (s *IngestSimulatePipelineService) Header(name string, value string) *IngestSimulatePipelineService {
+	if s.headers == nil {
+		s.headers = http.Header{}
+	}
+	s.headers.Add(name, value)
+	return s
+}
+
+// Headers specifies the headers of the request.
+func (s *IngestSimulatePipelineService) Headers(headers http.Header) *IngestSimulatePipelineService {
+	s.headers = headers
+	return s
+}
+
+// Id specifies the pipeline ID.
+func (s *IngestSimulatePipelineService) Id(id string) *IngestSimulatePipelineService {
+	s.id = id
+	return s
+}
+
+// Verbose mode. Display data output for each processor in executed pipeline.
+func (s *IngestSimulatePipelineService) Verbose(verbose bool) *IngestSimulatePipelineService {
+	s.verbose = &verbose
+	return s
+}
+
+// BodyJson is the ingest definition, defined as a JSON-serializable simulate
+// definition. Use e.g. a map[string]interface{} here.
+func (s *IngestSimulatePipelineService) BodyJson(body interface{}) *IngestSimulatePipelineService {
+	s.bodyJson = body
+	return s
+}
+
+// BodyString is the simulate definition, defined as a string.
+func (s *IngestSimulatePipelineService) BodyString(body string) *IngestSimulatePipelineService {
+	s.bodyString = body
+	return s
+}
+
+// buildURL builds the URL for the operation.
+func (s *IngestSimulatePipelineService) buildURL() (string, url.Values, error) {
+	var err error
+	var path string
+
+	// Build URL
+	if s.id != "" {
+		path, err = uritemplates.Expand("/_ingest/pipeline/{id}/_simulate", map[string]string{
+			"id": s.id,
+		})
+	} else {
+		path = "/_ingest/pipeline/_simulate"
+	}
+	if err != nil {
+		return "", url.Values{}, err
+	}
+
+	// Add query string parameters
+	params := url.Values{}
+	if v := s.pretty; v != nil {
+		params.Set("pretty", fmt.Sprint(*v))
+	}
+	if v := s.human; v != nil {
+		params.Set("human", fmt.Sprint(*v))
+	}
+	if v := s.errorTrace; v != nil {
+		params.Set("error_trace", fmt.Sprint(*v))
+	}
+	if len(s.filterPath) > 0 {
+		params.Set("filter_path", strings.Join(s.filterPath, ","))
+	}
+	if v := s.verbose; v != nil {
+		params.Set("verbose", fmt.Sprint(*v))
+	}
+	return path, params, nil
+}
+
+// Validate checks if the operation is valid.
+func (s *IngestSimulatePipelineService) Validate() error {
+	var invalid []string
+	if s.bodyString == "" && s.bodyJson == nil {
+		invalid = append(invalid, "BodyJson")
+	}
+	if len(invalid) > 0 {
+		return fmt.Errorf("missing required fields: %v", invalid)
+	}
+	return nil
+}
+
+// Do executes the operation.
+func (s *IngestSimulatePipelineService) Do(ctx context.Context) (*IngestSimulatePipelineResponse, error) {
+	// Check pre-conditions
+	if err := s.Validate(); err != nil {
+		return nil, err
+	}
+
+	// Get URL for request
+	path, params, err := s.buildURL()
+	if err != nil {
+		return nil, err
+	}
+
+	// Setup HTTP request body
+	var body interface{}
+	if s.bodyJson != nil {
+		body = s.bodyJson
+	} else {
+		body = s.bodyString
+	}
+
+	// Get HTTP response
+	res, err := s.client.PerformRequest(ctx, PerformRequestOptions{
+		Method:  "POST",
+		Path:    path,
+		Params:  params,
+		Body:    body,
+		Headers: s.headers,
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	// Return operation response
+	ret := new(IngestSimulatePipelineResponse)
+	if err := json.Unmarshal(res.Body, ret); err != nil {
+		return nil, err
+	}
+	return ret, nil
+}
+
+// IngestSimulatePipelineResponse is the response of IngestSimulatePipeline.Do.
+type IngestSimulatePipelineResponse struct {
+	Docs []*IngestSimulateDocumentResult `json:"docs"`
+}
+
+type IngestSimulateDocumentResult struct {
+	Doc              map[string]interface{}           `json:"doc"`
+	ProcessorResults []*IngestSimulateProcessorResult `json:"processor_results"`
+}
+
+type IngestSimulateProcessorResult struct {
+	ProcessorTag string                 `json:"tag"`
+	Doc          map[string]interface{} `json:"doc"`
+}