131 lines
3.3 KiB
Go
131 lines
3.3 KiB
Go
package elastic
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import (
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"context"
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"fmt"
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"net/http"
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"net/url"
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"github.com/olivere/elastic/uritemplates"
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)
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// TasksGetTaskService retrieves the state of a task in the cluster. It is part of the Task Management API
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// documented at http://www.elastic.co/guide/en/elasticsearch/reference/5.2/tasks-list.html.
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//
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// It is supported as of Elasticsearch 2.3.0.
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type TasksGetTaskService struct {
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client *Client
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pretty bool
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taskId string
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waitForCompletion *bool
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headers http.Header
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}
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// NewTasksGetTaskService creates a new TasksGetTaskService.
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func NewTasksGetTaskService(client *Client) *TasksGetTaskService {
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return &TasksGetTaskService{
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client: client,
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}
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}
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// TaskId specifies the task to return. Notice that the caller is responsible
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// for using the correct format, i.e. node_id:task_number, as specified in
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// the REST API.
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func (s *TasksGetTaskService) TaskId(taskId string) *TasksGetTaskService {
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s.taskId = taskId
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return s
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}
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// TaskIdFromNodeAndId indicates to return the task on the given node with specified id.
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func (s *TasksGetTaskService) TaskIdFromNodeAndId(nodeId string, id int64) *TasksGetTaskService {
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s.taskId = fmt.Sprintf("%s:%d", nodeId, id)
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return s
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}
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// WaitForCompletion indicates whether to wait for the matching tasks
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// to complete (default: false).
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func (s *TasksGetTaskService) WaitForCompletion(waitForCompletion bool) *TasksGetTaskService {
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s.waitForCompletion = &waitForCompletion
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return s
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}
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// Header sets headers on the request
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func (s *TasksGetTaskService) Header(name string, value string) *TasksGetTaskService {
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if s.headers == nil {
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s.headers = http.Header{}
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}
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s.headers.Add(name, value)
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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 *TasksGetTaskService) Pretty(pretty bool) *TasksGetTaskService {
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s.pretty = pretty
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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 *TasksGetTaskService) buildURL() (string, url.Values, error) {
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// Build URL
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path, err := uritemplates.Expand("/_tasks/{task_id}", map[string]string{
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"task_id": s.taskId,
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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.waitForCompletion != nil {
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params.Set("wait_for_completion", fmt.Sprintf("%v", *s.waitForCompletion))
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}
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return path, params, nil
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}
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// Validate checks if the operation is valid.
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func (s *TasksGetTaskService) Validate() error {
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return nil
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}
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// Do executes the operation.
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func (s *TasksGetTaskService) Do(ctx context.Context) (*TasksGetTaskResponse, 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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// Get URL for request
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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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// Get HTTP response
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res, err := s.client.PerformRequest(ctx, PerformRequestOptions{
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Method: "GET",
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Path: path,
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Params: params,
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Headers: s.headers,
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})
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if err != nil {
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return nil, err
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}
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// Return operation response
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ret := new(TasksGetTaskResponse)
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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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ret.Header = res.Header
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return ret, nil
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}
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type TasksGetTaskResponse struct {
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Header http.Header `json:"-"`
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Completed bool `json:"completed"`
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Task *TaskInfo `json:"task,omitempty"`
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}
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