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gitea/vendor/github.com/olivere/elastic/v7/indices_exists_template.go

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// 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"
)
// IndicesExistsTemplateService checks if a given template exists.
// See http://www.elastic.co/guide/en/elasticsearch/reference/7.0/indices-templates.html#indices-templates-exists
// for documentation.
type IndicesExistsTemplateService 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
name string
local *bool
masterTimeout string
}
// NewIndicesExistsTemplateService creates a new IndicesExistsTemplateService.
func NewIndicesExistsTemplateService(client *Client) *IndicesExistsTemplateService {
return &IndicesExistsTemplateService{
client: client,
}
}
// Pretty tells Elasticsearch whether to return a formatted JSON response.
func (s *IndicesExistsTemplateService) Pretty(pretty bool) *IndicesExistsTemplateService {
s.pretty = &pretty
return s
}
// Human specifies whether human readable values should be returned in
// the JSON response, e.g. "7.5mb".
func (s *IndicesExistsTemplateService) Human(human bool) *IndicesExistsTemplateService {
s.human = &human
return s
}
// ErrorTrace specifies whether to include the stack trace of returned errors.
func (s *IndicesExistsTemplateService) ErrorTrace(errorTrace bool) *IndicesExistsTemplateService {
s.errorTrace = &errorTrace
return s
}
// FilterPath specifies a list of filters used to reduce the response.
func (s *IndicesExistsTemplateService) FilterPath(filterPath ...string) *IndicesExistsTemplateService {
s.filterPath = filterPath
return s
}
// Header adds a header to the request.
func (s *IndicesExistsTemplateService) Header(name string, value string) *IndicesExistsTemplateService {
if s.headers == nil {
s.headers = http.Header{}
}
s.headers.Add(name, value)
return s
}
// Headers specifies the headers of the request.
func (s *IndicesExistsTemplateService) Headers(headers http.Header) *IndicesExistsTemplateService {
s.headers = headers
return s
}
// Name is the name of the template.
func (s *IndicesExistsTemplateService) Name(name string) *IndicesExistsTemplateService {
s.name = name
return s
}
// Local indicates whether to return local information, i.e. do not retrieve
// the state from master node (default: false).
func (s *IndicesExistsTemplateService) Local(local bool) *IndicesExistsTemplateService {
s.local = &local
return s
}
// MasterTimeout specifies the timeout for connection to master.
func (s *IndicesExistsTemplateService) MasterTimeout(masterTimeout string) *IndicesExistsTemplateService {
s.masterTimeout = masterTimeout
return s
}
// buildURL builds the URL for the operation.
func (s *IndicesExistsTemplateService) buildURL() (string, url.Values, error) {
// Build URL
path, err := uritemplates.Expand("/_template/{name}", map[string]string{
"name": s.name,
})
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.local != nil {
params.Set("local", fmt.Sprint(*s.local))
}
if s.masterTimeout != "" {
params.Set("master_timeout", s.masterTimeout)
}
return path, params, nil
}
// Validate checks if the operation is valid.
func (s *IndicesExistsTemplateService) Validate() error {
var invalid []string
if s.name == "" {
invalid = append(invalid, "Name")
}
if len(invalid) > 0 {
return fmt.Errorf("missing required fields: %v", invalid)
}
return nil
}
// Do executes the operation.
func (s *IndicesExistsTemplateService) Do(ctx context.Context) (bool, error) {
// Check pre-conditions
if err := s.Validate(); err != nil {
return false, err
}
// Get URL for request
path, params, err := s.buildURL()
if err != nil {
return false, err
}
// Get HTTP response
res, err := s.client.PerformRequest(ctx, PerformRequestOptions{
Method: "HEAD",
Path: path,
Params: params,
IgnoreErrors: []int{404},
Headers: s.headers,
})
if err != nil {
return false, err
}
// Return operation response
switch res.StatusCode {
case http.StatusOK:
return true, nil
case http.StatusNotFound:
return false, nil
default:
return false, fmt.Errorf("elastic: got HTTP code %d when it should have been either 200 or 404", res.StatusCode)
}
}