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package elastic
import (
"context"
"fmt"
"net/url"
"github.com/olivere/elastic/uritemplates"
)
// TasksGetTaskService retrieves the state of a task in the cluster. It is part of the Task Management API
// documented at http://www.elastic.co/guide/en/elasticsearch/reference/5.2/tasks-list.html.
//
// It is supported as of Elasticsearch 2.3.0.
type TasksGetTaskService struct {
client *Client
pretty bool
taskId string
waitForCompletion *bool
}
// NewTasksGetTaskService creates a new TasksGetTaskService.
func NewTasksGetTaskService(client *Client) *TasksGetTaskService {
return &TasksGetTaskService{
client: client,
}
}
// TaskId indicates to return the task with specified id.
func (s *TasksGetTaskService) TaskId(taskId string) *TasksGetTaskService {
s.taskId = taskId
return s
}
// WaitForCompletion indicates whether to wait for the matching tasks
// to complete (default: false).
func (s *TasksGetTaskService) WaitForCompletion(waitForCompletion bool) *TasksGetTaskService {
s.waitForCompletion = &waitForCompletion
return s
}
// Pretty indicates that the JSON response be indented and human readable.
func (s *TasksGetTaskService) Pretty(pretty bool) *TasksGetTaskService {
s.pretty = pretty
return s
}
// buildURL builds the URL for the operation.
func (s *TasksGetTaskService) buildURL() (string, url.Values, error) {
// Build URL
path, err := uritemplates.Expand("/_tasks/{task_id}", map[string]string{
"task_id": s.taskId,
})
if err != nil {
return "", url.Values{}, err
}
// Add query string parameters
params := url.Values{}
if s.pretty {
params.Set("pretty", "1")
}
if s.waitForCompletion != nil {
params.Set("wait_for_completion", fmt.Sprintf("%v", *s.waitForCompletion))
}
return path, params, nil
}
// Validate checks if the operation is valid.
func (s *TasksGetTaskService) Validate() error {
return nil
}
// Do executes the operation.
func (s *TasksGetTaskService) Do(ctx context.Context) (*TasksGetTaskResponse, 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: "GET",
Path: path,
Params: params,
})
if err != nil {
return nil, err
}
// Return operation response
ret := new(TasksGetTaskResponse)
if err := s.client.decoder.Decode(res.Body, ret); err != nil {
return nil, err
}
return ret, nil
}
type TasksGetTaskResponse struct {
Completed bool `json:"completed"`
Task *TaskInfo `json:"task,omitempty"`
}
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