Matteo Scandolo | a428586 | 2020-12-01 18:10:10 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Licensed to the Apache Software Foundation (ASF) under one |
| 3 | * or more contributor license agreements. See the NOTICE file |
| 4 | * distributed with this work for additional information |
| 5 | * regarding copyright ownership. The ASF licenses this file |
| 6 | * to you under the Apache License, Version 2.0 (the |
| 7 | * "License"); you may not use this file except in compliance |
| 8 | * with the License. You may obtain a copy of the License at |
| 9 | * |
| 10 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 11 | * |
| 12 | * Unless required by applicable law or agreed to in writing, |
| 13 | * software distributed under the License is distributed on an |
| 14 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| 15 | * KIND, either express or implied. See the License for the |
| 16 | * specific language governing permissions and limitations |
| 17 | * under the License. |
| 18 | */ |
| 19 | |
| 20 | package thrift |
| 21 | |
David K. Bainbridge | 0663189 | 2021-08-19 13:07:00 +0000 | [diff] [blame] | 22 | import ( |
| 23 | "context" |
| 24 | "sync" |
| 25 | ) |
| 26 | |
Matteo Scandolo | a428586 | 2020-12-01 18:10:10 -0800 | [diff] [blame] | 27 | type TSerializer struct { |
| 28 | Transport *TMemoryBuffer |
| 29 | Protocol TProtocol |
| 30 | } |
| 31 | |
| 32 | type TStruct interface { |
David K. Bainbridge | 0663189 | 2021-08-19 13:07:00 +0000 | [diff] [blame] | 33 | Write(ctx context.Context, p TProtocol) error |
| 34 | Read(ctx context.Context, p TProtocol) error |
Matteo Scandolo | a428586 | 2020-12-01 18:10:10 -0800 | [diff] [blame] | 35 | } |
| 36 | |
| 37 | func NewTSerializer() *TSerializer { |
| 38 | transport := NewTMemoryBufferLen(1024) |
David K. Bainbridge | 0663189 | 2021-08-19 13:07:00 +0000 | [diff] [blame] | 39 | protocol := NewTBinaryProtocolTransport(transport) |
Matteo Scandolo | a428586 | 2020-12-01 18:10:10 -0800 | [diff] [blame] | 40 | |
| 41 | return &TSerializer{ |
David K. Bainbridge | 0663189 | 2021-08-19 13:07:00 +0000 | [diff] [blame] | 42 | Transport: transport, |
| 43 | Protocol: protocol, |
| 44 | } |
Matteo Scandolo | a428586 | 2020-12-01 18:10:10 -0800 | [diff] [blame] | 45 | } |
| 46 | |
David K. Bainbridge | 0663189 | 2021-08-19 13:07:00 +0000 | [diff] [blame] | 47 | func (t *TSerializer) WriteString(ctx context.Context, msg TStruct) (s string, err error) { |
Matteo Scandolo | a428586 | 2020-12-01 18:10:10 -0800 | [diff] [blame] | 48 | t.Transport.Reset() |
| 49 | |
David K. Bainbridge | 0663189 | 2021-08-19 13:07:00 +0000 | [diff] [blame] | 50 | if err = msg.Write(ctx, t.Protocol); err != nil { |
Matteo Scandolo | a428586 | 2020-12-01 18:10:10 -0800 | [diff] [blame] | 51 | return |
| 52 | } |
| 53 | |
David K. Bainbridge | 0663189 | 2021-08-19 13:07:00 +0000 | [diff] [blame] | 54 | if err = t.Protocol.Flush(ctx); err != nil { |
Matteo Scandolo | a428586 | 2020-12-01 18:10:10 -0800 | [diff] [blame] | 55 | return |
| 56 | } |
David K. Bainbridge | 0663189 | 2021-08-19 13:07:00 +0000 | [diff] [blame] | 57 | if err = t.Transport.Flush(ctx); err != nil { |
Matteo Scandolo | a428586 | 2020-12-01 18:10:10 -0800 | [diff] [blame] | 58 | return |
| 59 | } |
| 60 | |
| 61 | return t.Transport.String(), nil |
| 62 | } |
| 63 | |
David K. Bainbridge | 0663189 | 2021-08-19 13:07:00 +0000 | [diff] [blame] | 64 | func (t *TSerializer) Write(ctx context.Context, msg TStruct) (b []byte, err error) { |
Matteo Scandolo | a428586 | 2020-12-01 18:10:10 -0800 | [diff] [blame] | 65 | t.Transport.Reset() |
| 66 | |
David K. Bainbridge | 0663189 | 2021-08-19 13:07:00 +0000 | [diff] [blame] | 67 | if err = msg.Write(ctx, t.Protocol); err != nil { |
Matteo Scandolo | a428586 | 2020-12-01 18:10:10 -0800 | [diff] [blame] | 68 | return |
| 69 | } |
| 70 | |
David K. Bainbridge | 0663189 | 2021-08-19 13:07:00 +0000 | [diff] [blame] | 71 | if err = t.Protocol.Flush(ctx); err != nil { |
Matteo Scandolo | a428586 | 2020-12-01 18:10:10 -0800 | [diff] [blame] | 72 | return |
| 73 | } |
| 74 | |
David K. Bainbridge | 0663189 | 2021-08-19 13:07:00 +0000 | [diff] [blame] | 75 | if err = t.Transport.Flush(ctx); err != nil { |
Matteo Scandolo | a428586 | 2020-12-01 18:10:10 -0800 | [diff] [blame] | 76 | return |
| 77 | } |
| 78 | |
| 79 | b = append(b, t.Transport.Bytes()...) |
| 80 | return |
| 81 | } |
David K. Bainbridge | 0663189 | 2021-08-19 13:07:00 +0000 | [diff] [blame] | 82 | |
| 83 | // TSerializerPool is the thread-safe version of TSerializer, it uses resource |
| 84 | // pool of TSerializer under the hood. |
| 85 | // |
| 86 | // It must be initialized with either NewTSerializerPool or |
| 87 | // NewTSerializerPoolSizeFactory. |
| 88 | type TSerializerPool struct { |
| 89 | pool sync.Pool |
| 90 | } |
| 91 | |
| 92 | // NewTSerializerPool creates a new TSerializerPool. |
| 93 | // |
| 94 | // NewTSerializer can be used as the arg here. |
| 95 | func NewTSerializerPool(f func() *TSerializer) *TSerializerPool { |
| 96 | return &TSerializerPool{ |
| 97 | pool: sync.Pool{ |
| 98 | New: func() interface{} { |
| 99 | return f() |
| 100 | }, |
| 101 | }, |
| 102 | } |
| 103 | } |
| 104 | |
| 105 | // NewTSerializerPoolSizeFactory creates a new TSerializerPool with the given |
| 106 | // size and protocol factory. |
| 107 | // |
| 108 | // Note that the size is not the limit. The TMemoryBuffer underneath can grow |
| 109 | // larger than that. It just dictates the initial size. |
| 110 | func NewTSerializerPoolSizeFactory(size int, factory TProtocolFactory) *TSerializerPool { |
| 111 | return &TSerializerPool{ |
| 112 | pool: sync.Pool{ |
| 113 | New: func() interface{} { |
| 114 | transport := NewTMemoryBufferLen(size) |
| 115 | protocol := factory.GetProtocol(transport) |
| 116 | |
| 117 | return &TSerializer{ |
| 118 | Transport: transport, |
| 119 | Protocol: protocol, |
| 120 | } |
| 121 | }, |
| 122 | }, |
| 123 | } |
| 124 | } |
| 125 | |
| 126 | func (t *TSerializerPool) WriteString(ctx context.Context, msg TStruct) (string, error) { |
| 127 | s := t.pool.Get().(*TSerializer) |
| 128 | defer t.pool.Put(s) |
| 129 | return s.WriteString(ctx, msg) |
| 130 | } |
| 131 | |
| 132 | func (t *TSerializerPool) Write(ctx context.Context, msg TStruct) ([]byte, error) { |
| 133 | s := t.pool.Get().(*TSerializer) |
| 134 | defer t.pool.Put(s) |
| 135 | return s.Write(ctx, msg) |
| 136 | } |