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bulk_index_request.go 5.94 KB
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Oliver Eilhard 提交于 2016-03-28 10:54 . bulk: Cache calls to Source
// 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 (
"encoding/json"
"fmt"
"strings"
)
// Bulk request to add a document to Elasticsearch.
//
// See https://www.elastic.co/guide/en/elasticsearch/reference/current/docs-bulk.html
// for details.
type BulkIndexRequest struct {
BulkableRequest
index string
typ string
id string
opType string
routing string
parent string
timestamp string
ttl int64
refresh *bool
version int64 // default is MATCH_ANY
versionType string // default is "internal"
doc interface{}
source []string
}
// NewBulkIndexRequest returns a new BulkIndexRequest.
// The operation type is "index" by default.
func NewBulkIndexRequest() *BulkIndexRequest {
return &BulkIndexRequest{
opType: "index",
}
}
// Index specifies the Elasticsearch index to use for this index request.
// If unspecified, the index set on the BulkService will be used.
func (r *BulkIndexRequest) Index(index string) *BulkIndexRequest {
r.index = index
r.source = nil
return r
}
// Type specifies the Elasticsearch type to use for this index request.
// If unspecified, the type set on the BulkService will be used.
func (r *BulkIndexRequest) Type(typ string) *BulkIndexRequest {
r.typ = typ
r.source = nil
return r
}
// Id specifies the identifier of the document to index.
func (r *BulkIndexRequest) Id(id string) *BulkIndexRequest {
r.id = id
r.source = nil
return r
}
// OpType specifies if this request should follow create-only or upsert
// behavior. This follows the OpType of the standard document index API.
// See https://www.elastic.co/guide/en/elasticsearch/reference/current/docs-index_.html#operation-type
// for details.
func (r *BulkIndexRequest) OpType(opType string) *BulkIndexRequest {
r.opType = opType
r.source = nil
return r
}
// Routing specifies a routing value for the request.
func (r *BulkIndexRequest) Routing(routing string) *BulkIndexRequest {
r.routing = routing
r.source = nil
return r
}
// Parent specifies the identifier of the parent document (if available).
func (r *BulkIndexRequest) Parent(parent string) *BulkIndexRequest {
r.parent = parent
r.source = nil
return r
}
// Timestamp can be used to index a document with a timestamp.
// This is deprecated as of 2.0.0-beta2; you should use a normal date field
// and set its value explicitly.
func (r *BulkIndexRequest) Timestamp(timestamp string) *BulkIndexRequest {
r.timestamp = timestamp
r.source = nil
return r
}
// Ttl (time to live) sets an expiration date for the document. Expired
// documents will be expunged automatically.
// This is deprecated as of 2.0.0-beta2 and will be replaced by a different
// implementation in a future version.
func (r *BulkIndexRequest) Ttl(ttl int64) *BulkIndexRequest {
r.ttl = ttl
r.source = nil
return r
}
// Refresh indicates whether to update the shards immediately after
// the request has been processed. Newly added documents will appear
// in search immediately at the cost of slower bulk performance.
func (r *BulkIndexRequest) Refresh(refresh bool) *BulkIndexRequest {
r.refresh = &refresh
r.source = nil
return r
}
// Version indicates the version of the document as part of an optimistic
// concurrency model.
func (r *BulkIndexRequest) Version(version int64) *BulkIndexRequest {
r.version = version
r.source = nil
return r
}
// VersionType specifies how versions are created. It can be e.g. internal,
// external, external_gte, or force.
//
// See https://www.elastic.co/guide/en/elasticsearch/reference/current/docs-index_.html#index-versioning
// for details.
func (r *BulkIndexRequest) VersionType(versionType string) *BulkIndexRequest {
r.versionType = versionType
r.source = nil
return r
}
// Doc specifies the document to index.
func (r *BulkIndexRequest) Doc(doc interface{}) *BulkIndexRequest {
r.doc = doc
r.source = nil
return r
}
// String returns the on-wire representation of the index request,
// concatenated as a single string.
func (r *BulkIndexRequest) String() string {
lines, err := r.Source()
if err != nil {
return fmt.Sprintf("error: %v", err)
}
return strings.Join(lines, "\n")
}
// Source returns the on-wire representation of the index request,
// split into an action-and-meta-data line and an (optional) source line.
// See https://www.elastic.co/guide/en/elasticsearch/reference/current/docs-bulk.html
// for details.
func (r *BulkIndexRequest) Source() ([]string, error) {
// { "index" : { "_index" : "test", "_type" : "type1", "_id" : "1" } }
// { "field1" : "value1" }
if r.source != nil {
return r.source, nil
}
lines := make([]string, 2)
// "index" ...
command := make(map[string]interface{})
indexCommand := make(map[string]interface{})
if r.index != "" {
indexCommand["_index"] = r.index
}
if r.typ != "" {
indexCommand["_type"] = r.typ
}
if r.id != "" {
indexCommand["_id"] = r.id
}
if r.routing != "" {
indexCommand["_routing"] = r.routing
}
if r.parent != "" {
indexCommand["_parent"] = r.parent
}
if r.timestamp != "" {
indexCommand["_timestamp"] = r.timestamp
}
if r.ttl > 0 {
indexCommand["_ttl"] = r.ttl
}
if r.version > 0 {
indexCommand["_version"] = r.version
}
if r.versionType != "" {
indexCommand["_version_type"] = r.versionType
}
if r.refresh != nil {
indexCommand["refresh"] = *r.refresh
}
command[r.opType] = indexCommand
line, err := json.Marshal(command)
if err != nil {
return nil, err
}
lines[0] = string(line)
// "field1" ...
if r.doc != nil {
switch t := r.doc.(type) {
default:
body, err := json.Marshal(r.doc)
if err != nil {
return nil, err
}
lines[1] = string(body)
case json.RawMessage:
lines[1] = string(t)
case *json.RawMessage:
lines[1] = string(*t)
case string:
lines[1] = t
case *string:
lines[1] = *t
}
} else {
lines[1] = "{}"
}
r.source = lines
return lines, nil
}
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