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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 (
"encoding/json"
"fmt"
"net/url"
"strings"
"gopkg.in/olivere/elastic.v2/uritemplates"
)
type AliasesService struct {
client *Client
indices []string
pretty bool
}
func NewAliasesService(client *Client) *AliasesService {
builder := &AliasesService{
client: client,
indices: make([]string, 0),
}
return builder
}
func (s *AliasesService) Pretty(pretty bool) *AliasesService {
s.pretty = pretty
return s
}
func (s *AliasesService) Index(indexName string) *AliasesService {
s.indices = append(s.indices, indexName)
return s
}
func (s *AliasesService) Indices(indexNames ...string) *AliasesService {
s.indices = append(s.indices, indexNames...)
return s
}
func (s *AliasesService) Do() (*AliasesResult, error) {
var err error
// Build url
path := "/"
// Indices part
indexPart := make([]string, 0)
for _, index := range s.indices {
index, err = uritemplates.Expand("{index}", map[string]string{
"index": index,
})
if err != nil {
return nil, err
}
indexPart = append(indexPart, index)
}
path += strings.Join(indexPart, ",")
// TODO Add types here
// Search
path += "/_aliases"
// Parameters
params := make(url.Values)
if s.pretty {
params.Set("pretty", fmt.Sprintf("%v", s.pretty))
}
// Get response
res, err := s.client.PerformRequest("GET", path, params, nil)
if err != nil {
return nil, err
}
// {
// "indexName" : {
// "aliases" : {
// "alias1" : { },
// "alias2" : { }
// }
// },
// "indexName2" : {
// ...
// },
// }
indexMap := make(map[string]interface{})
if err := json.Unmarshal(res.Body, &indexMap); err != nil {
return nil, err
}
// Each (indexName, _)
ret := &AliasesResult{
Indices: make(map[string]indexResult),
}
for indexName, indexData := range indexMap {
indexOut, found := ret.Indices[indexName]
if !found {
indexOut = indexResult{Aliases: make([]aliasResult, 0)}
}
// { "aliases" : { ... } }
indexDataMap, ok := indexData.(map[string]interface{})
if ok {
aliasesData, ok := indexDataMap["aliases"].(map[string]interface{})
if ok {
for aliasName, _ := range aliasesData {
aliasRes := aliasResult{AliasName: aliasName}
indexOut.Aliases = append(indexOut.Aliases, aliasRes)
}
}
}
ret.Indices[indexName] = indexOut
}
return ret, nil
}
// -- Result of an alias request.
type AliasesResult struct {
Indices map[string]indexResult
}
type indexResult struct {
Aliases []aliasResult
}
type aliasResult struct {
AliasName string
}
func (ar AliasesResult) IndicesByAlias(aliasName string) []string {
indices := make([]string, 0)
for indexName, indexInfo := range ar.Indices {
for _, aliasInfo := range indexInfo.Aliases {
if aliasInfo.AliasName == aliasName {
indices = append(indices, indexName)
}
}
}
return indices
}
func (ir indexResult) HasAlias(aliasName string) bool {
for _, alias := range ir.Aliases {
if alias.AliasName == aliasName {
return true
}
}
return false
}
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