-
Notifications
You must be signed in to change notification settings - Fork 325
/
consumer_decryptor.go
60 lines (52 loc) · 1.87 KB
/
consumer_decryptor.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you 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 crypto
import (
"fmt"
"github.com/apache/pulsar-client-go/pulsar/crypto"
pb "github.com/apache/pulsar-client-go/pulsar/internal/pulsar_proto"
"github.com/apache/pulsar-client-go/pulsar/log"
)
type consumerDecryptor struct {
keyReader crypto.KeyReader
messageCrypto crypto.MessageCrypto
logger log.Logger
}
func NewConsumerDecryptor(keyReader crypto.KeyReader,
messageCrypto crypto.MessageCrypto,
logger log.Logger) Decryptor {
return &consumerDecryptor{
keyReader: keyReader,
messageCrypto: messageCrypto,
logger: logger,
}
}
func (d *consumerDecryptor) Decrypt(payload []byte,
msgID *pb.MessageIdData,
msgMetadata *pb.MessageMetadata) ([]byte, error) {
// encryption keys are not present in message metadta, no need decrypt the payload
if len(msgMetadata.GetEncryptionKeys()) == 0 {
return payload, nil
}
// KeyReader interface is not implemented
if d.keyReader == nil {
return payload, fmt.Errorf("KeyReader interface is not implemented")
}
return d.messageCrypto.Decrypt(crypto.NewMessageMetadataSupplier(msgMetadata),
payload,
d.keyReader)
}