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// Copyright 2012-2015 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 (
"fmt"
"net/url"
"strings"
"gopkg.in/olivere/elastic.v2/uritemplates"
)
// IndicesExistsTypeService checks if one or more types exist in one or more indices.
// See http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/indices-types-exists.html.
type IndicesExistsTypeService struct {
client *Client
pretty bool
index []string
typ []string
allowNoIndices *bool
expandWildcards string
local *bool
ignoreUnavailable *bool
}
// NewIndicesExistsTypeService creates a new IndicesExistsTypeService.
func NewIndicesExistsTypeService(client *Client) *IndicesExistsTypeService {
return &IndicesExistsTypeService{
client: client,
index: make([]string, 0),
typ: make([]string, 0),
}
}
// Index is a list of index names; use `_all` to check the types across all indices.
func (s *IndicesExistsTypeService) Index(index ...string) *IndicesExistsTypeService {
s.index = append(s.index, index...)
return s
}
// Type is a list of document types to check.
func (s *IndicesExistsTypeService) Type(typ ...string) *IndicesExistsTypeService {
s.typ = append(s.typ, typ...)
return s
}
// IgnoreUnavailable indicates whether specified concrete indices should be
// ignored when unavailable (missing or closed).
func (s *IndicesExistsTypeService) IgnoreUnavailable(ignoreUnavailable bool) *IndicesExistsTypeService {
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 *IndicesExistsTypeService) AllowNoIndices(allowNoIndices bool) *IndicesExistsTypeService {
s.allowNoIndices = &allowNoIndices
return s
}
// ExpandWildcards indicates whether to expand wildcard expression to
// concrete indices that are open, closed or both.
func (s *IndicesExistsTypeService) ExpandWildcards(expandWildcards string) *IndicesExistsTypeService {
s.expandWildcards = expandWildcards
return s
}
// Local specifies whether to return local information, i.e. do not retrieve
// the state from master node (default: false).
func (s *IndicesExistsTypeService) Local(local bool) *IndicesExistsTypeService {
s.local = &local
return s
}
// Pretty indicates that the JSON response be indented and human readable.
func (s *IndicesExistsTypeService) Pretty(pretty bool) *IndicesExistsTypeService {
s.pretty = pretty
return s
}
// buildURL builds the URL for the operation.
func (s *IndicesExistsTypeService) buildURL() (string, url.Values, error) {
if err := s.Validate(); err != nil {
return "", url.Values{}, err
}
// Build URL
path, err := uritemplates.Expand("/{index}/{type}", map[string]string{
"type": strings.Join(s.typ, ","),
"index": strings.Join(s.index, ","),
})
if err != nil {
return "", url.Values{}, err
}
// Add query string parameters
params := url.Values{}
if s.pretty {
params.Set("pretty", "1")
}
if s.expandWildcards != "" {
params.Set("expand_wildcards", s.expandWildcards)
}
if s.local != nil {
params.Set("local", fmt.Sprintf("%v", *s.local))
}
if s.ignoreUnavailable != nil {
params.Set("ignore_unavailable", fmt.Sprintf("%v", *s.ignoreUnavailable))
}
if s.allowNoIndices != nil {
params.Set("allow_no_indices", fmt.Sprintf("%v", *s.allowNoIndices))
}
return path, params, nil
}
// Validate checks if the operation is valid.
func (s *IndicesExistsTypeService) Validate() error {
var invalid []string
if len(s.index) == 0 {
invalid = append(invalid, "Index")
}
if len(s.typ) == 0 {
invalid = append(invalid, "Type")
}
if len(invalid) > 0 {
return fmt.Errorf("missing required fields: %v", invalid)
}
return nil
}
// Do executes the operation.
func (s *IndicesExistsTypeService) Do() (bool, error) {
// Get URL for request
path, params, err := s.buildURL()
if err != nil {
return false, err
}
// Get HTTP response
res, err := s.client.PerformRequest("HEAD", path, params, nil)
if err != nil {
return false, err
}
// Return operation response
if res.StatusCode == 200 {
return true, nil
} else if res.StatusCode == 404 {
return false, nil
}
return false, fmt.Errorf("elastic: got HTTP code %d when it should have been either 200 or 404", res.StatusCode)
}
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