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Diffstat (limited to 'vendor/github.com/olivere/elastic/get.go')
| -rw-r--r-- | vendor/github.com/olivere/elastic/get.go | 260 |
1 files changed, 260 insertions, 0 deletions
diff --git a/vendor/github.com/olivere/elastic/get.go b/vendor/github.com/olivere/elastic/get.go new file mode 100644 index 000000000..efcc748bb --- /dev/null +++ b/vendor/github.com/olivere/elastic/get.go @@ -0,0 +1,260 @@ +// 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/url" + "strings" + + "github.com/olivere/elastic/uritemplates" +) + +// GetService allows to get a typed JSON document from the index based +// on its id. +// +// See https://www.elastic.co/guide/en/elasticsearch/reference/6.0/docs-get.html +// for details. +type GetService struct { + client *Client + pretty bool + index string + typ string + id string + routing string + preference string + storedFields []string + refresh string + realtime *bool + fsc *FetchSourceContext + version interface{} + versionType string + parent string + ignoreErrorsOnGeneratedFields *bool +} + +// NewGetService creates a new GetService. +func NewGetService(client *Client) *GetService { + return &GetService{ + client: client, + typ: "_all", + } +} + +// Index is the name of the index. +func (s *GetService) Index(index string) *GetService { + s.index = index + return s +} + +// Type is the type of the document (use `_all` to fetch the first document +// matching the ID across all types). +func (s *GetService) Type(typ string) *GetService { + s.typ = typ + return s +} + +// Id is the document ID. +func (s *GetService) Id(id string) *GetService { + s.id = id + return s +} + +// Parent is the ID of the parent document. +func (s *GetService) Parent(parent string) *GetService { + s.parent = parent + return s +} + +// Routing is the specific routing value. +func (s *GetService) Routing(routing string) *GetService { + s.routing = routing + return s +} + +// Preference specifies the node or shard the operation should be performed on (default: random). +func (s *GetService) Preference(preference string) *GetService { + s.preference = preference + return s +} + +// StoredFields is a list of fields to return in the response. +func (s *GetService) StoredFields(storedFields ...string) *GetService { + s.storedFields = append(s.storedFields, storedFields...) + return s +} + +func (s *GetService) FetchSource(fetchSource bool) *GetService { + if s.fsc == nil { + s.fsc = NewFetchSourceContext(fetchSource) + } else { + s.fsc.SetFetchSource(fetchSource) + } + return s +} + +func (s *GetService) FetchSourceContext(fetchSourceContext *FetchSourceContext) *GetService { + s.fsc = fetchSourceContext + return s +} + +// Refresh the shard containing the document before performing the operation. +func (s *GetService) Refresh(refresh string) *GetService { + s.refresh = refresh + return s +} + +// Realtime specifies whether to perform the operation in realtime or search mode. +func (s *GetService) Realtime(realtime bool) *GetService { + s.realtime = &realtime + return s +} + +// VersionType is the specific version type. +func (s *GetService) VersionType(versionType string) *GetService { + s.versionType = versionType + return s +} + +// Version is an explicit version number for concurrency control. +func (s *GetService) Version(version interface{}) *GetService { + s.version = version + return s +} + +// IgnoreErrorsOnGeneratedFields indicates whether to ignore fields that +// are generated if the transaction log is accessed. +func (s *GetService) IgnoreErrorsOnGeneratedFields(ignore bool) *GetService { + s.ignoreErrorsOnGeneratedFields = &ignore + return s +} + +// Pretty indicates that the JSON response be indented and human readable. +func (s *GetService) Pretty(pretty bool) *GetService { + s.pretty = pretty + return s +} + +// Validate checks if the operation is valid. +func (s *GetService) Validate() error { + var invalid []string + if s.id == "" { + invalid = append(invalid, "Id") + } + if s.index == "" { + invalid = append(invalid, "Index") + } + if s.typ == "" { + invalid = append(invalid, "Type") + } + if len(invalid) > 0 { + return fmt.Errorf("missing required fields: %v", invalid) + } + return nil +} + +// buildURL builds the URL for the operation. +func (s *GetService) buildURL() (string, url.Values, error) { + // Build URL + path, err := uritemplates.Expand("/{index}/{type}/{id}", map[string]string{ + "id": s.id, + "index": s.index, + "type": s.typ, + }) + if err != nil { + return "", url.Values{}, err + } + + // Add query string parameters + params := url.Values{} + if s.pretty { + params.Set("pretty", "true") + } + if s.routing != "" { + params.Set("routing", s.routing) + } + if s.parent != "" { + params.Set("parent", s.parent) + } + if s.preference != "" { + params.Set("preference", s.preference) + } + if len(s.storedFields) > 0 { + params.Set("stored_fields", strings.Join(s.storedFields, ",")) + } + if s.refresh != "" { + params.Set("refresh", s.refresh) + } + if s.version != nil { + params.Set("version", fmt.Sprintf("%v", s.version)) + } + if s.versionType != "" { + params.Set("version_type", s.versionType) + } + if s.realtime != nil { + params.Set("realtime", fmt.Sprintf("%v", *s.realtime)) + } + if s.ignoreErrorsOnGeneratedFields != nil { + params.Add("ignore_errors_on_generated_fields", fmt.Sprintf("%v", *s.ignoreErrorsOnGeneratedFields)) + } + if s.fsc != nil { + for k, values := range s.fsc.Query() { + params.Add(k, strings.Join(values, ",")) + } + } + return path, params, nil +} + +// Do executes the operation. +func (s *GetService) Do(ctx context.Context) (*GetResult, error) { + // Check pre-conditions + if err := s.Validate(); err != nil { + return nil, err + } + + // Get URL for request + path, params, err := s.buildURL() + if err != nil { + return nil, err + } + + // Get HTTP response + res, err := s.client.PerformRequest(ctx, PerformRequestOptions{ + Method: "GET", + Path: path, + Params: params, + }) + if err != nil { + return nil, err + } + + // Return operation response + ret := new(GetResult) + if err := s.client.decoder.Decode(res.Body, ret); err != nil { + return nil, err + } + return ret, nil +} + +// -- Result of a get request. + +// GetResult is the outcome of GetService.Do. +type GetResult struct { + Index string `json:"_index"` // index meta field + Type string `json:"_type"` // type meta field + Id string `json:"_id"` // id meta field + Uid string `json:"_uid"` // uid meta field (see MapperService.java for all meta fields) + Routing string `json:"_routing"` // routing meta field + Parent string `json:"_parent"` // parent meta field + Version *int64 `json:"_version"` // version number, when Version is set to true in SearchService + Source *json.RawMessage `json:"_source,omitempty"` + Found bool `json:"found,omitempty"` + Fields map[string]interface{} `json:"fields,omitempty"` + //Error string `json:"error,omitempty"` // used only in MultiGet + // TODO double-check that MultiGet now returns details error information + Error *ErrorDetails `json:"error,omitempty"` // only used in MultiGet +} |