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// 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 (
"fmt"
"net/url"
"golang.org/x/net/context"
"gopkg.in/olivere/elastic.v5/uritemplates"
)
// DeleteService allows to delete a typed JSON document from a specified
// index based on its id.
//
// See https://www.elastic.co/guide/en/elasticsearch/reference/5.2/docs-delete.html
// for details.
type DeleteService struct {
client *Client
pretty bool
id string
index string
typ string
routing string
timeout string
version interface{}
versionType string
waitForActiveShards string
parent string
refresh string
}
// NewDeleteService creates a new DeleteService.
func NewDeleteService(client *Client) *DeleteService {
return &DeleteService{
client: client,
}
}
// Type is the type of the document.
func (s *DeleteService) Type(typ string) *DeleteService {
s.typ = typ
return s
}
// Id is the document ID.
func (s *DeleteService) Id(id string) *DeleteService {
s.id = id
return s
}
// Index is the name of the index.
func (s *DeleteService) Index(index string) *DeleteService {
s.index = index
return s
}
// Routing is a specific routing value.
func (s *DeleteService) Routing(routing string) *DeleteService {
s.routing = routing
return s
}
// Timeout is an explicit operation timeout.
func (s *DeleteService) Timeout(timeout string) *DeleteService {
s.timeout = timeout
return s
}
// Version is an explicit version number for concurrency control.
func (s *DeleteService) Version(version interface{}) *DeleteService {
s.version = version
return s
}
// VersionType is a specific version type.
func (s *DeleteService) VersionType(versionType string) *DeleteService {
s.versionType = versionType
return s
}
// WaitForActiveShards sets the number of shard copies that must be active
// before proceeding with the delete operation. Defaults to 1, meaning the
// primary shard only. Set to `all` for all shard copies, otherwise set to
// any non-negative value less than or equal to the total number of copies
// for the shard (number of replicas + 1).
func (s *DeleteService) WaitForActiveShards(waitForActiveShards string) *DeleteService {
s.waitForActiveShards = waitForActiveShards
return s
}
// Parent is the ID of parent document.
func (s *DeleteService) Parent(parent string) *DeleteService {
s.parent = parent
return s
}
// Refresh the index after performing the operation.
func (s *DeleteService) Refresh(refresh string) *DeleteService {
s.refresh = refresh
return s
}
// Pretty indicates that the JSON response be indented and human readable.
func (s *DeleteService) Pretty(pretty bool) *DeleteService {
s.pretty = pretty
return s
}
// buildURL builds the URL for the operation.
func (s *DeleteService) buildURL() (string, url.Values, error) {
// Build URL
path, err := uritemplates.Expand("/{index}/{type}/{id}", map[string]string{
"index": s.index,
"type": s.typ,
"id": s.id,
})
if err != nil {
return "", url.Values{}, err
}
// Add query string parameters
params := url.Values{}
if s.pretty {
params.Set("pretty", "1")
}
if s.refresh != "" {
params.Set("refresh", s.refresh)
}
if s.routing != "" {
params.Set("routing", s.routing)
}
if s.timeout != "" {
params.Set("timeout", s.timeout)
}
if s.version != nil {
params.Set("version", fmt.Sprintf("%v", s.version))
}
if s.versionType != "" {
params.Set("version_type", s.versionType)
}
if s.waitForActiveShards != "" {
params.Set("wait_for_active_shards", s.waitForActiveShards)
}
if s.parent != "" {
params.Set("parent", s.parent)
}
return path, params, nil
}
// Validate checks if the operation is valid.
func (s *DeleteService) Validate() error {
var invalid []string
if s.typ == "" {
invalid = append(invalid, "Type")
}
if s.id == "" {
invalid = append(invalid, "Id")
}
if s.index == "" {
invalid = append(invalid, "Index")
}
if len(invalid) > 0 {
return fmt.Errorf("missing required fields: %v", invalid)
}
return nil
}
// Do executes the operation.
func (s *DeleteService) Do(ctx context.Context) (*DeleteResponse, 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, "DELETE", path, params, nil)
if err != nil {
return nil, err
}
// Return operation response
ret := new(DeleteResponse)
if err := s.client.decoder.Decode(res.Body, ret); err != nil {
return nil, err
}
return ret, nil
}
// -- Result of a delete request.
// DeleteResponse is the outcome of running DeleteService.Do.
type DeleteResponse struct {
// TODO _shards { total, failed, successful }
Found bool `json:"found"`
Index string `json:"_index"`
Type string `json:"_type"`
Id string `json:"_id"`
Version int64 `json:"_version"`
}