113 lines
3.6 KiB
Go
113 lines
3.6 KiB
Go
// Copyright 2017 Google Inc. All Rights Reserved.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package firestore
|
|
|
|
import (
|
|
"errors"
|
|
|
|
pb "google.golang.org/genproto/googleapis/firestore/v1beta1"
|
|
|
|
"golang.org/x/net/context"
|
|
)
|
|
|
|
// A WriteBatch holds multiple database updates. Build a batch with the Create, Set,
|
|
// Update and Delete methods, then run it with the Commit method. Errors in Create,
|
|
// Set, Update or Delete are recorded instead of being returned immediately. The
|
|
// first such error is returned by Commit.
|
|
type WriteBatch struct {
|
|
c *Client
|
|
err error
|
|
writes []*pb.Write
|
|
}
|
|
|
|
func (b *WriteBatch) add(ws []*pb.Write, err error) *WriteBatch {
|
|
if b.err != nil {
|
|
return b
|
|
}
|
|
if err != nil {
|
|
b.err = err
|
|
return b
|
|
}
|
|
b.writes = append(b.writes, ws...)
|
|
return b
|
|
}
|
|
|
|
// Create adds a Create operation to the batch.
|
|
// See DocumentRef.Create for details.
|
|
func (b *WriteBatch) Create(dr *DocumentRef, data interface{}) *WriteBatch {
|
|
return b.add(dr.newReplaceWrites(data, nil, Exists(false)))
|
|
}
|
|
|
|
// Set adds a Set operation to the batch.
|
|
// See DocumentRef.Set for details.
|
|
func (b *WriteBatch) Set(dr *DocumentRef, data interface{}, opts ...SetOption) *WriteBatch {
|
|
return b.add(dr.newReplaceWrites(data, opts, nil))
|
|
}
|
|
|
|
// Delete adds a Delete operation to the batch.
|
|
// See DocumentRef.Delete for details.
|
|
func (b *WriteBatch) Delete(dr *DocumentRef, opts ...Precondition) *WriteBatch {
|
|
return b.add(dr.newDeleteWrites(opts))
|
|
}
|
|
|
|
// UpdateMap adds an UpdateMap operation to the batch.
|
|
// See DocumentRef.UpdateMap for details.
|
|
func (b *WriteBatch) UpdateMap(dr *DocumentRef, data map[string]interface{}, opts ...Precondition) *WriteBatch {
|
|
return b.add(dr.newUpdateMapWrites(data, opts))
|
|
}
|
|
|
|
// UpdateStruct adds an UpdateStruct operation to the batch.
|
|
// See DocumentRef.UpdateStruct for details.
|
|
func (b *WriteBatch) UpdateStruct(dr *DocumentRef, fieldPaths []string, data interface{}, opts ...Precondition) *WriteBatch {
|
|
return b.add(dr.newUpdateStructWrites(fieldPaths, data, opts))
|
|
}
|
|
|
|
// UpdatePaths adds an UpdatePaths operation to the batch.
|
|
// See DocumentRef.UpdatePaths for details.
|
|
func (b *WriteBatch) UpdatePaths(dr *DocumentRef, data []FieldPathUpdate, opts ...Precondition) *WriteBatch {
|
|
return b.add(dr.newUpdatePathWrites(data, opts))
|
|
}
|
|
|
|
// Commit applies all the writes in the batch to the database atomically. Commit
|
|
// returns an error if there are no writes in the batch, if any errors occurred in
|
|
// constructing the writes, or if the Commmit operation fails.
|
|
func (b *WriteBatch) Commit(ctx context.Context) ([]*WriteResult, error) {
|
|
if err := checkTransaction(ctx); err != nil {
|
|
return nil, err
|
|
}
|
|
if b.err != nil {
|
|
return nil, b.err
|
|
}
|
|
if len(b.writes) == 0 {
|
|
return nil, errors.New("firestore: cannot commit empty WriteBatch")
|
|
}
|
|
db := b.c.path()
|
|
res, err := b.c.c.Commit(withResourceHeader(ctx, db), &pb.CommitRequest{
|
|
Database: db,
|
|
Writes: b.writes,
|
|
})
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
var wrs []*WriteResult
|
|
for _, pwr := range res.WriteResults {
|
|
wr, err := writeResultFromProto(pwr)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
wrs = append(wrs, wr)
|
|
}
|
|
return wrs, nil
|
|
}
|