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/*
* 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 thrift
import (
"context"
"sync"
)
type TSerializer struct {
Transport *TMemoryBuffer
Protocol TProtocol
}
type TStruct interface {
Write(ctx context.Context, p TProtocol) error
Read(ctx context.Context, p TProtocol) error
}
func NewTSerializer() *TSerializer {
transport := NewTMemoryBufferLen(1024)
protocol := NewTBinaryProtocolTransport(transport)
return &TSerializer{
Transport: transport,
Protocol: protocol,
}
}
func (t *TSerializer) WriteString(ctx context.Context, msg TStruct) (s string, err error) {
t.Transport.Reset()
if err = msg.Write(ctx, t.Protocol); err != nil {
return
}
if err = t.Protocol.Flush(ctx); err != nil {
return
}
if err = t.Transport.Flush(ctx); err != nil {
return
}
return t.Transport.String(), nil
}
func (t *TSerializer) Write(ctx context.Context, msg TStruct) (b []byte, err error) {
t.Transport.Reset()
if err = msg.Write(ctx, t.Protocol); err != nil {
return
}
if err = t.Protocol.Flush(ctx); err != nil {
return
}
if err = t.Transport.Flush(ctx); err != nil {
return
}
b = append(b, t.Transport.Bytes()...)
return
}
// TSerializerPool is the thread-safe version of TSerializer, it uses resource
// pool of TSerializer under the hood.
//
// It must be initialized with either NewTSerializerPool or
// NewTSerializerPoolSizeFactory.
type TSerializerPool struct {
pool sync.Pool
}
// NewTSerializerPool creates a new TSerializerPool.
//
// NewTSerializer can be used as the arg here.
func NewTSerializerPool(f func() *TSerializer) *TSerializerPool {
return &TSerializerPool{
pool: sync.Pool{
New: func() interface{} {
return f()
},
},
}
}
// NewTSerializerPoolSizeFactory creates a new TSerializerPool with the given
// size and protocol factory.
//
// Note that the size is not the limit. The TMemoryBuffer underneath can grow
// larger than that. It just dictates the initial size.
func NewTSerializerPoolSizeFactory(size int, factory TProtocolFactory) *TSerializerPool {
return &TSerializerPool{
pool: sync.Pool{
New: func() interface{} {
transport := NewTMemoryBufferLen(size)
protocol := factory.GetProtocol(transport)
return &TSerializer{
Transport: transport,
Protocol: protocol,
}
},
},
}
}
func (t *TSerializerPool) WriteString(ctx context.Context, msg TStruct) (string, error) {
s := t.pool.Get().(*TSerializer)
defer t.pool.Put(s)
return s.WriteString(ctx, msg)
}
func (t *TSerializerPool) Write(ctx context.Context, msg TStruct) ([]byte, error) {
s := t.pool.Get().(*TSerializer)
defer t.pool.Put(s)
return s.Write(ctx, msg)
}
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