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/tasks_cancel.go

@@ -0,0 +1,207 @@
+// 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"
+)
+
+// TasksCancelService can cancel long-running tasks.
+// It is supported as of Elasticsearch 2.3.0.
+//
+// See https://www.elastic.co/guide/en/elasticsearch/reference/7.0/tasks.html#task-cancellation
+// for details.
+type TasksCancelService 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
+
+	taskId       string
+	actions      []string
+	nodeId       []string
+	parentTaskId string
+}
+
+// NewTasksCancelService creates a new TasksCancelService.
+func NewTasksCancelService(client *Client) *TasksCancelService {
+	return &TasksCancelService{
+		client: client,
+	}
+}
+
+// Pretty tells Elasticsearch whether to return a formatted JSON response.
+func (s *TasksCancelService) Pretty(pretty bool) *TasksCancelService {
+	s.pretty = &pretty
+	return s
+}
+
+// Human specifies whether human readable values should be returned in
+// the JSON response, e.g. "7.5mb".
+func (s *TasksCancelService) Human(human bool) *TasksCancelService {
+	s.human = &human
+	return s
+}
+
+// ErrorTrace specifies whether to include the stack trace of returned errors.
+func (s *TasksCancelService) ErrorTrace(errorTrace bool) *TasksCancelService {
+	s.errorTrace = &errorTrace
+	return s
+}
+
+// FilterPath specifies a list of filters used to reduce the response.
+func (s *TasksCancelService) FilterPath(filterPath ...string) *TasksCancelService {
+	s.filterPath = filterPath
+	return s
+}
+
+// Header adds a header to the request.
+func (s *TasksCancelService) Header(name string, value string) *TasksCancelService {
+	if s.headers == nil {
+		s.headers = http.Header{}
+	}
+	s.headers.Add(name, value)
+	return s
+}
+
+// Headers specifies the headers of the request.
+func (s *TasksCancelService) Headers(headers http.Header) *TasksCancelService {
+	s.headers = headers
+	return s
+}
+
+// TaskId specifies the task to cancel. Notice that the caller is responsible
+// for using the correct format, i.e. node_id:task_number, as specified in
+// the REST API.
+func (s *TasksCancelService) TaskId(taskId string) *TasksCancelService {
+	s.taskId = taskId
+	return s
+}
+
+// TaskIdFromNodeAndId specifies the task to cancel. Set id to -1 for all tasks.
+func (s *TasksCancelService) TaskIdFromNodeAndId(nodeId string, id int64) *TasksCancelService {
+	if id != -1 {
+		s.taskId = fmt.Sprintf("%s:%d", nodeId, id)
+	}
+	return s
+}
+
+// Actions is a list of actions that should be cancelled. Leave empty to cancel all.
+func (s *TasksCancelService) Actions(actions ...string) *TasksCancelService {
+	s.actions = append(s.actions, actions...)
+	return s
+}
+
+// NodeId is a list of node IDs or names to limit the returned information;
+// use `_local` to return information from the node you're connecting to,
+// leave empty to get information from all nodes.
+func (s *TasksCancelService) NodeId(nodeId ...string) *TasksCancelService {
+	s.nodeId = append(s.nodeId, nodeId...)
+	return s
+}
+
+// ParentTaskId specifies to cancel tasks with specified parent task id.
+// Notice that the caller is responsible for using the correct format,
+// i.e. node_id:task_number, as specified in the REST API.
+func (s *TasksCancelService) ParentTaskId(parentTaskId string) *TasksCancelService {
+	s.parentTaskId = parentTaskId
+	return s
+}
+
+// ParentTaskIdFromNodeAndId specifies to cancel tasks with specified parent task id.
+func (s *TasksCancelService) ParentTaskIdFromNodeAndId(nodeId string, id int64) *TasksCancelService {
+	if id != -1 {
+		s.parentTaskId = fmt.Sprintf("%s:%d", nodeId, id)
+	}
+	return s
+}
+
+// buildURL builds the URL for the operation.
+func (s *TasksCancelService) buildURL() (string, url.Values, error) {
+	// Build URL
+	var err error
+	var path string
+	if s.taskId != "" {
+		path, err = uritemplates.Expand("/_tasks/{task_id}/_cancel", map[string]string{
+			"task_id": s.taskId,
+		})
+	} else {
+		path = "/_tasks/_cancel"
+	}
+	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 len(s.actions) > 0 {
+		params.Set("actions", strings.Join(s.actions, ","))
+	}
+	if len(s.nodeId) > 0 {
+		params.Set("nodes", strings.Join(s.nodeId, ","))
+	}
+	if s.parentTaskId != "" {
+		params.Set("parent_task_id", s.parentTaskId)
+	}
+	return path, params, nil
+}
+
+// Validate checks if the operation is valid.
+func (s *TasksCancelService) Validate() error {
+	return nil
+}
+
+// Do executes the operation.
+func (s *TasksCancelService) Do(ctx context.Context) (*TasksListResponse, 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
+	}
+
+	// Get HTTP response
+	res, err := s.client.PerformRequest(ctx, PerformRequestOptions{
+		Method:  "POST",
+		Path:    path,
+		Params:  params,
+		Headers: s.headers,
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	// Return operation response
+	ret := new(TasksListResponse)
+	if err := s.client.decoder.Decode(res.Body, ret); err != nil {
+		return nil, err
+	}
+	return ret, nil
+}