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https://github.com/go-gitea/gitea
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5dbf36f356
* Issue search support elasticsearch * Fix lint * Add indexer name on app.ini * add a warnning on SearchIssuesByKeyword * improve code
198 lines
5.6 KiB
Go
Vendored
198 lines
5.6 KiB
Go
Vendored
// Copyright 2012-present Oliver Eilhard. All rights reserved.
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// Use of this source code is governed by a MIT-license.
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// See http://olivere.mit-license.org/license.txt for details.
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package elastic
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import (
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"context"
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"encoding/json"
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"fmt"
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"net/http"
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"net/url"
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"strings"
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)
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// PingService checks if an Elasticsearch server on a given URL is alive.
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// When asked for, it can also return various information about the
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// Elasticsearch server, e.g. the Elasticsearch version number.
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//
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// Ping simply starts a HTTP GET request to the URL of the server.
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// If the server responds with HTTP Status code 200 OK, the server is alive.
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type PingService struct {
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client *Client
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pretty *bool // pretty format the returned JSON response
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human *bool // return human readable values for statistics
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errorTrace *bool // include the stack trace of returned errors
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filterPath []string // list of filters used to reduce the response
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headers http.Header // custom request-level HTTP headers
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url string
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timeout string
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httpHeadOnly bool
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}
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// PingResult is the result returned from querying the Elasticsearch server.
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type PingResult struct {
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Name string `json:"name"`
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ClusterName string `json:"cluster_name"`
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Version struct {
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Number string `json:"number"` // e.g. "7.0.0"
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BuildFlavor string `json:"build_flavor"` // e.g. "oss" or "default"
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BuildType string `json:"build_type"` // e.g. "docker"
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BuildHash string `json:"build_hash"` // e.g. "b7e28a7"
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BuildDate string `json:"build_date"` // e.g. "2019-04-05T22:55:32.697037Z"
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BuildSnapshot bool `json:"build_snapshot"` // e.g. false
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LuceneVersion string `json:"lucene_version"` // e.g. "8.0.0"
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MinimumWireCompatibilityVersion string `json:"minimum_wire_compatibility_version"` // e.g. "6.7.0"
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MinimumIndexCompatibilityVersion string `json:"minimum_index_compatibility_version"` // e.g. "6.0.0-beta1"
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} `json:"version"`
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TagLine string `json:"tagline"`
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}
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func NewPingService(client *Client) *PingService {
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return &PingService{
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client: client,
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url: DefaultURL,
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httpHeadOnly: false,
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}
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}
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// Pretty tells Elasticsearch whether to return a formatted JSON response.
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func (s *PingService) Pretty(pretty bool) *PingService {
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s.pretty = &pretty
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return s
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}
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// Human specifies whether human readable values should be returned in
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// the JSON response, e.g. "7.5mb".
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func (s *PingService) Human(human bool) *PingService {
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s.human = &human
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return s
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}
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// ErrorTrace specifies whether to include the stack trace of returned errors.
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func (s *PingService) ErrorTrace(errorTrace bool) *PingService {
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s.errorTrace = &errorTrace
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return s
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}
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// FilterPath specifies a list of filters used to reduce the response.
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func (s *PingService) FilterPath(filterPath ...string) *PingService {
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s.filterPath = filterPath
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return s
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}
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// Header adds a header to the request.
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func (s *PingService) Header(name string, value string) *PingService {
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if s.headers == nil {
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s.headers = http.Header{}
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}
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s.headers.Add(name, value)
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return s
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}
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// Headers specifies the headers of the request.
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func (s *PingService) Headers(headers http.Header) *PingService {
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s.headers = headers
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return s
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}
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func (s *PingService) URL(url string) *PingService {
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s.url = url
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return s
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}
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func (s *PingService) Timeout(timeout string) *PingService {
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s.timeout = timeout
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return s
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}
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// HeadOnly makes the service to only return the status code in Do;
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// the PingResult will be nil.
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func (s *PingService) HttpHeadOnly(httpHeadOnly bool) *PingService {
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s.httpHeadOnly = httpHeadOnly
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return s
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}
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// Do returns the PingResult, the HTTP status code of the Elasticsearch
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// server, and an error.
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func (s *PingService) Do(ctx context.Context) (*PingResult, int, error) {
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s.client.mu.RLock()
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basicAuth := s.client.basicAuth
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basicAuthUsername := s.client.basicAuthUsername
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basicAuthPassword := s.client.basicAuthPassword
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defaultHeaders := s.client.headers
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s.client.mu.RUnlock()
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url_ := strings.TrimSuffix(s.url, "/") + "/"
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params := url.Values{}
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if v := s.pretty; v != nil {
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params.Set("pretty", fmt.Sprint(*v))
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}
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if v := s.human; v != nil {
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params.Set("human", fmt.Sprint(*v))
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}
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if v := s.errorTrace; v != nil {
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params.Set("error_trace", fmt.Sprint(*v))
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}
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if len(s.filterPath) > 0 {
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params.Set("filter_path", strings.Join(s.filterPath, ","))
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}
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if s.timeout != "" {
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params.Set("timeout", s.timeout)
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}
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if len(params) > 0 {
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url_ += "?" + params.Encode()
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}
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var method string
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if s.httpHeadOnly {
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method = "HEAD"
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} else {
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method = "GET"
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}
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// Notice: This service must NOT use PerformRequest!
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req, err := NewRequest(method, url_)
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if err != nil {
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return nil, 0, err
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}
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if len(s.headers) > 0 {
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for key, values := range s.headers {
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for _, v := range values {
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req.Header.Add(key, v)
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}
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}
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}
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if len(defaultHeaders) > 0 {
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for key, values := range defaultHeaders {
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for _, v := range values {
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req.Header.Add(key, v)
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}
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}
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}
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if basicAuth {
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req.SetBasicAuth(basicAuthUsername, basicAuthPassword)
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}
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res, err := s.client.c.Do((*http.Request)(req).WithContext(ctx))
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if err != nil {
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return nil, 0, err
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}
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defer res.Body.Close()
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var ret *PingResult
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if !s.httpHeadOnly {
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ret = new(PingResult)
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if err := json.NewDecoder(res.Body).Decode(ret); err != nil {
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return nil, res.StatusCode, err
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}
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}
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return ret, res.StatusCode, nil
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}
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