gitea/vendor/github.com/olivere/elastic/v7/indices_get_aliases.go
Lunny Xiao 5dbf36f356
Issue search support elasticsearch (#9428)
* Issue search support elasticsearch

* Fix lint

* Add indexer name on app.ini

* add a warnning on SearchIssuesByKeyword

* improve code
2020-02-13 14:06:17 +08:00

231 lines
5.6 KiB
Go
Vendored

// 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"
)
// AliasesService returns the aliases associated with one or more indices, or the
// indices associated with one or more aliases, or a combination of those filters.
// See http://www.elastic.co/guide/en/elasticsearch/reference/7.0/indices-aliases.html.
type AliasesService 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
index []string
alias []string
}
// NewAliasesService instantiates a new AliasesService.
func NewAliasesService(client *Client) *AliasesService {
builder := &AliasesService{
client: client,
}
return builder
}
// Pretty tells Elasticsearch whether to return a formatted JSON response.
func (s *AliasesService) Pretty(pretty bool) *AliasesService {
s.pretty = &pretty
return s
}
// Human specifies whether human readable values should be returned in
// the JSON response, e.g. "7.5mb".
func (s *AliasesService) Human(human bool) *AliasesService {
s.human = &human
return s
}
// ErrorTrace specifies whether to include the stack trace of returned errors.
func (s *AliasesService) ErrorTrace(errorTrace bool) *AliasesService {
s.errorTrace = &errorTrace
return s
}
// FilterPath specifies a list of filters used to reduce the response.
func (s *AliasesService) FilterPath(filterPath ...string) *AliasesService {
s.filterPath = filterPath
return s
}
// Header adds a header to the request.
func (s *AliasesService) Header(name string, value string) *AliasesService {
if s.headers == nil {
s.headers = http.Header{}
}
s.headers.Add(name, value)
return s
}
// Headers specifies the headers of the request.
func (s *AliasesService) Headers(headers http.Header) *AliasesService {
s.headers = headers
return s
}
// Index adds one or more indices.
func (s *AliasesService) Index(index ...string) *AliasesService {
s.index = append(s.index, index...)
return s
}
// Alias adds one or more aliases.
func (s *AliasesService) Alias(alias ...string) *AliasesService {
s.alias = append(s.alias, alias...)
return s
}
// buildURL builds the URL for the operation.
func (s *AliasesService) buildURL() (string, url.Values, error) {
var err error
var path string
if len(s.index) > 0 {
path, err = uritemplates.Expand("/{index}/_alias/{alias}", map[string]string{
"index": strings.Join(s.index, ","),
"alias": strings.Join(s.alias, ","),
})
} else {
path, err = uritemplates.Expand("/_alias/{alias}", map[string]string{
"alias": strings.Join(s.alias, ","),
})
}
if err != nil {
return "", url.Values{}, err
}
path = strings.TrimSuffix(path, "/")
// 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, ","))
}
return path, params, nil
}
func (s *AliasesService) Do(ctx context.Context) (*AliasesResult, error) {
path, params, err := s.buildURL()
if err != nil {
return nil, err
}
// Get response
res, err := s.client.PerformRequest(ctx, PerformRequestOptions{
Method: "GET",
Path: path,
Params: params,
Headers: s.headers,
})
if err != nil {
return nil, err
}
// {
// "indexName" : {
// "aliases" : {
// "alias1" : { },
// "alias2" : { }
// }
// },
// "indexName2" : {
// ...
// },
// }
indexMap := make(map[string]struct {
Aliases map[string]struct {
IsWriteIndex bool `json:"is_write_index"`
} `json:"aliases"`
})
if err := s.client.decoder.Decode(res.Body, &indexMap); err != nil {
return nil, err
}
// Each (indexName, _)
ret := &AliasesResult{
Indices: make(map[string]indexResult),
}
for indexName, indexData := range indexMap {
if indexData.Aliases == nil {
continue
}
indexOut, found := ret.Indices[indexName]
if !found {
indexOut = indexResult{Aliases: make([]aliasResult, 0)}
}
// { "aliases" : { ... } }
for aliasName, aliasData := range indexData.Aliases {
aliasRes := aliasResult{AliasName: aliasName, IsWriteIndex: aliasData.IsWriteIndex}
indexOut.Aliases = append(indexOut.Aliases, aliasRes)
}
ret.Indices[indexName] = indexOut
}
return ret, nil
}
// -- Result of an alias request.
// AliasesResult is the outcome of calling AliasesService.Do.
type AliasesResult struct {
Indices map[string]indexResult
}
type indexResult struct {
Aliases []aliasResult
}
type aliasResult struct {
AliasName string
IsWriteIndex bool
}
// IndicesByAlias returns all indices given a specific alias name.
func (ar AliasesResult) IndicesByAlias(aliasName string) []string {
var indices []string
for indexName, indexInfo := range ar.Indices {
for _, aliasInfo := range indexInfo.Aliases {
if aliasInfo.AliasName == aliasName {
indices = append(indices, indexName)
}
}
}
return indices
}
// HasAlias returns true if the index has a specific alias.
func (ir indexResult) HasAlias(aliasName string) bool {
for _, alias := range ir.Aliases {
if alias.AliasName == aliasName {
return true
}
}
return false
}