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gitea/vendor/github.com/olivere/elastic/v7/ping.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

198 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"
"encoding/json"
"fmt"
"net/http"
"net/url"
"strings"
)
// PingService checks if an Elasticsearch server on a given URL is alive.
// When asked for, it can also return various information about the
// Elasticsearch server, e.g. the Elasticsearch version number.
//
// Ping simply starts a HTTP GET request to the URL of the server.
// If the server responds with HTTP Status code 200 OK, the server is alive.
type PingService 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
url string
timeout string
httpHeadOnly bool
}
// PingResult is the result returned from querying the Elasticsearch server.
type PingResult struct {
Name string `json:"name"`
ClusterName string `json:"cluster_name"`
Version struct {
Number string `json:"number"` // e.g. "7.0.0"
BuildFlavor string `json:"build_flavor"` // e.g. "oss" or "default"
BuildType string `json:"build_type"` // e.g. "docker"
BuildHash string `json:"build_hash"` // e.g. "b7e28a7"
BuildDate string `json:"build_date"` // e.g. "2019-04-05T22:55:32.697037Z"
BuildSnapshot bool `json:"build_snapshot"` // e.g. false
LuceneVersion string `json:"lucene_version"` // e.g. "8.0.0"
MinimumWireCompatibilityVersion string `json:"minimum_wire_compatibility_version"` // e.g. "6.7.0"
MinimumIndexCompatibilityVersion string `json:"minimum_index_compatibility_version"` // e.g. "6.0.0-beta1"
} `json:"version"`
TagLine string `json:"tagline"`
}
func NewPingService(client *Client) *PingService {
return &PingService{
client: client,
url: DefaultURL,
httpHeadOnly: false,
}
}
// Pretty tells Elasticsearch whether to return a formatted JSON response.
func (s *PingService) Pretty(pretty bool) *PingService {
s.pretty = &pretty
return s
}
// Human specifies whether human readable values should be returned in
// the JSON response, e.g. "7.5mb".
func (s *PingService) Human(human bool) *PingService {
s.human = &human
return s
}
// ErrorTrace specifies whether to include the stack trace of returned errors.
func (s *PingService) ErrorTrace(errorTrace bool) *PingService {
s.errorTrace = &errorTrace
return s
}
// FilterPath specifies a list of filters used to reduce the response.
func (s *PingService) FilterPath(filterPath ...string) *PingService {
s.filterPath = filterPath
return s
}
// Header adds a header to the request.
func (s *PingService) Header(name string, value string) *PingService {
if s.headers == nil {
s.headers = http.Header{}
}
s.headers.Add(name, value)
return s
}
// Headers specifies the headers of the request.
func (s *PingService) Headers(headers http.Header) *PingService {
s.headers = headers
return s
}
func (s *PingService) URL(url string) *PingService {
s.url = url
return s
}
func (s *PingService) Timeout(timeout string) *PingService {
s.timeout = timeout
return s
}
// HeadOnly makes the service to only return the status code in Do;
// the PingResult will be nil.
func (s *PingService) HttpHeadOnly(httpHeadOnly bool) *PingService {
s.httpHeadOnly = httpHeadOnly
return s
}
// Do returns the PingResult, the HTTP status code of the Elasticsearch
// server, and an error.
func (s *PingService) Do(ctx context.Context) (*PingResult, int, error) {
s.client.mu.RLock()
basicAuth := s.client.basicAuth
basicAuthUsername := s.client.basicAuthUsername
basicAuthPassword := s.client.basicAuthPassword
defaultHeaders := s.client.headers
s.client.mu.RUnlock()
url_ := strings.TrimSuffix(s.url, "/") + "/"
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.timeout != "" {
params.Set("timeout", s.timeout)
}
if len(params) > 0 {
url_ += "?" + params.Encode()
}
var method string
if s.httpHeadOnly {
method = "HEAD"
} else {
method = "GET"
}
// Notice: This service must NOT use PerformRequest!
req, err := NewRequest(method, url_)
if err != nil {
return nil, 0, err
}
if len(s.headers) > 0 {
for key, values := range s.headers {
for _, v := range values {
req.Header.Add(key, v)
}
}
}
if len(defaultHeaders) > 0 {
for key, values := range defaultHeaders {
for _, v := range values {
req.Header.Add(key, v)
}
}
}
if basicAuth {
req.SetBasicAuth(basicAuthUsername, basicAuthPassword)
}
res, err := s.client.c.Do((*http.Request)(req).WithContext(ctx))
if err != nil {
return nil, 0, err
}
defer res.Body.Close()
var ret *PingResult
if !s.httpHeadOnly {
ret = new(PingResult)
if err := json.NewDecoder(res.Body).Decode(ret); err != nil {
return nil, res.StatusCode, err
}
}
return ret, res.StatusCode, nil
}