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/validate.go

@@ -0,0 +1,339 @@
+// 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"
+	"fmt"
+	"net/http"
+	"net/url"
+	"strings"
+
+	"github.com/olivere/elastic/v7/uritemplates"
+)
+
+// ValidateService allows a user to validate a potentially
+// expensive query without executing it.
+// See https://www.elastic.co/guide/en/elasticsearch/reference/7.0/search-validate.html.
+type ValidateService 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
+
+	index             []string
+	typ               []string
+	q                 string
+	explain           *bool
+	rewrite           *bool
+	allShards         *bool
+	lenient           *bool
+	analyzer          string
+	df                string
+	analyzeWildcard   *bool
+	defaultOperator   string
+	ignoreUnavailable *bool
+	allowNoIndices    *bool
+	expandWildcards   string
+	bodyJson          interface{}
+	bodyString        string
+}
+
+// NewValidateService creates a new ValidateService.
+func NewValidateService(client *Client) *ValidateService {
+	return &ValidateService{
+		client: client,
+	}
+}
+
+// Pretty tells Elasticsearch whether to return a formatted JSON response.
+func (s *ValidateService) Pretty(pretty bool) *ValidateService {
+	s.pretty = &pretty
+	return s
+}
+
+// Human specifies whether human readable values should be returned in
+// the JSON response, e.g. "7.5mb".
+func (s *ValidateService) Human(human bool) *ValidateService {
+	s.human = &human
+	return s
+}
+
+// ErrorTrace specifies whether to include the stack trace of returned errors.
+func (s *ValidateService) ErrorTrace(errorTrace bool) *ValidateService {
+	s.errorTrace = &errorTrace
+	return s
+}
+
+// FilterPath specifies a list of filters used to reduce the response.
+func (s *ValidateService) FilterPath(filterPath ...string) *ValidateService {
+	s.filterPath = filterPath
+	return s
+}
+
+// Header adds a header to the request.
+func (s *ValidateService) Header(name string, value string) *ValidateService {
+	if s.headers == nil {
+		s.headers = http.Header{}
+	}
+	s.headers.Add(name, value)
+	return s
+}
+
+// Headers specifies the headers of the request.
+func (s *ValidateService) Headers(headers http.Header) *ValidateService {
+	s.headers = headers
+	return s
+}
+
+// Index sets the names of the indices to use for search.
+func (s *ValidateService) Index(index ...string) *ValidateService {
+	s.index = append(s.index, index...)
+	return s
+}
+
+// Type adds search restrictions for a list of types.
+//
+// Deprecated: Types are in the process of being removed. Instead of using a type, prefer to
+// filter on a field on the document.
+func (s *ValidateService) Type(typ ...string) *ValidateService {
+	s.typ = append(s.typ, typ...)
+	return s
+}
+
+// Lenient specifies whether format-based query failures
+// (such as providing text to a numeric field) should be ignored.
+func (s *ValidateService) Lenient(lenient bool) *ValidateService {
+	s.lenient = &lenient
+	return s
+}
+
+// Query in the Lucene query string syntax.
+func (s *ValidateService) Q(q string) *ValidateService {
+	s.q = q
+	return s
+}
+
+// An explain parameter can be specified to get more detailed information about why a query failed.
+func (s *ValidateService) Explain(explain *bool) *ValidateService {
+	s.explain = explain
+	return s
+}
+
+// Provide a more detailed explanation showing the actual Lucene query that will be executed.
+func (s *ValidateService) Rewrite(rewrite *bool) *ValidateService {
+	s.rewrite = rewrite
+	return s
+}
+
+// Execute validation on all shards instead of one random shard per index.
+func (s *ValidateService) AllShards(allShards *bool) *ValidateService {
+	s.allShards = allShards
+	return s
+}
+
+// AnalyzeWildcard specifies whether wildcards and prefix queries
+// in the query string query should be analyzed (default: false).
+func (s *ValidateService) AnalyzeWildcard(analyzeWildcard bool) *ValidateService {
+	s.analyzeWildcard = &analyzeWildcard
+	return s
+}
+
+// Analyzer is the analyzer for the query string query.
+func (s *ValidateService) Analyzer(analyzer string) *ValidateService {
+	s.analyzer = analyzer
+	return s
+}
+
+// Df is the default field for query string query (default: _all).
+func (s *ValidateService) Df(df string) *ValidateService {
+	s.df = df
+	return s
+}
+
+// DefaultOperator is the default operator for query string query (AND or OR).
+func (s *ValidateService) DefaultOperator(defaultOperator string) *ValidateService {
+	s.defaultOperator = defaultOperator
+	return s
+}
+
+// Query sets a query definition using the Query DSL.
+func (s *ValidateService) Query(query Query) *ValidateService {
+	src, err := query.Source()
+	if err != nil {
+		// Do nothing in case of an error
+		return s
+	}
+	body := make(map[string]interface{})
+	body["query"] = src
+	s.bodyJson = body
+	return s
+}
+
+// IgnoreUnavailable indicates whether the specified concrete indices
+// should be ignored when unavailable (missing or closed).
+func (s *ValidateService) IgnoreUnavailable(ignoreUnavailable bool) *ValidateService {
+	s.ignoreUnavailable = &ignoreUnavailable
+	return s
+}
+
+// AllowNoIndices indicates whether to ignore if a wildcard indices
+// expression resolves into no concrete indices. (This includes `_all` string
+// or when no indices have been specified).
+func (s *ValidateService) AllowNoIndices(allowNoIndices bool) *ValidateService {
+	s.allowNoIndices = &allowNoIndices
+	return s
+}
+
+// ExpandWildcards indicates whether to expand wildcard expression to
+// concrete indices that are open, closed or both.
+func (s *ValidateService) ExpandWildcards(expandWildcards string) *ValidateService {
+	s.expandWildcards = expandWildcards
+	return s
+}
+
+// BodyJson sets the query definition using the Query DSL.
+func (s *ValidateService) BodyJson(body interface{}) *ValidateService {
+	s.bodyJson = body
+	return s
+}
+
+// BodyString sets the query definition using the Query DSL as a string.
+func (s *ValidateService) BodyString(body string) *ValidateService {
+	s.bodyString = body
+	return s
+}
+
+// buildURL builds the URL for the operation.
+func (s *ValidateService) buildURL() (string, url.Values, error) {
+	var err error
+	var path string
+	// Build URL
+	if len(s.index) > 0 && len(s.typ) > 0 {
+		path, err = uritemplates.Expand("/{index}/{type}/_validate/query", map[string]string{
+			"index": strings.Join(s.index, ","),
+			"type":  strings.Join(s.typ, ","),
+		})
+	} else if len(s.index) > 0 {
+		path, err = uritemplates.Expand("/{index}/_validate/query", map[string]string{
+			"index": strings.Join(s.index, ","),
+		})
+	} else {
+		path, err = uritemplates.Expand("/_validate/query", map[string]string{
+			"type": strings.Join(s.typ, ","),
+		})
+	}
+	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 s.explain != nil {
+		params.Set("explain", fmt.Sprintf("%v", *s.explain))
+	}
+	if s.rewrite != nil {
+		params.Set("rewrite", fmt.Sprintf("%v", *s.rewrite))
+	}
+	if s.allShards != nil {
+		params.Set("all_shards", fmt.Sprintf("%v", *s.allShards))
+	}
+	if s.defaultOperator != "" {
+		params.Set("default_operator", s.defaultOperator)
+	}
+	if v := s.lenient; v != nil {
+		params.Set("lenient", fmt.Sprint(*v))
+	}
+	if s.q != "" {
+		params.Set("q", s.q)
+	}
+	if v := s.analyzeWildcard; v != nil {
+		params.Set("analyze_wildcard", fmt.Sprint(*v))
+	}
+	if s.analyzer != "" {
+		params.Set("analyzer", s.analyzer)
+	}
+	if s.df != "" {
+		params.Set("df", s.df)
+	}
+	if v := s.allowNoIndices; v != nil {
+		params.Set("allow_no_indices", fmt.Sprint(*v))
+	}
+	if s.expandWildcards != "" {
+		params.Set("expand_wildcards", s.expandWildcards)
+	}
+	if v := s.ignoreUnavailable; v != nil {
+		params.Set("ignore_unavailable", fmt.Sprint(*v))
+	}
+	return path, params, nil
+}
+
+// Validate checks if the operation is valid.
+func (s *ValidateService) Validate() error {
+	return nil
+}
+
+// Do executes the operation.
+func (s *ValidateService) Do(ctx context.Context) (*ValidateResponse, 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:  "GET",
+		Path:    path,
+		Params:  params,
+		Body:    body,
+		Headers: s.headers,
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	// Return operation response
+	ret := new(ValidateResponse)
+	if err := s.client.decoder.Decode(res.Body, ret); err != nil {
+		return nil, err
+	}
+	return ret, nil
+}
+
+// ValidateResponse is the response of ValidateService.Do.
+type ValidateResponse struct {
+	Valid        bool                   `json:"valid"`
+	Shards       map[string]interface{} `json:"_shards"`
+	Explanations []interface{}          `json:"explanations"`
+}