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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,66 @@ | ||
| // Copyright 2024 CloudWeGo Authors | ||
| // | ||
| // 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. | ||
|
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| package apache_adaptor | ||
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| import "io" | ||
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| // byteBuffer | ||
| type byteBuffer interface { | ||
| // Next reads the next n bytes sequentially and returns the original buffer. | ||
| Next(n int) (p []byte, err error) | ||
|
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| // ReadableLen returns the total length of readable buffer. | ||
| // Return: -1 means unreadable. | ||
| ReadableLen() (n int) | ||
|
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| // Malloc n bytes sequentially in the writer buffer. | ||
| Malloc(n int) (buf []byte, err error) | ||
| } | ||
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| // byteBufferWrapper is an adaptor that implement Read() by Next() and ReadableLen() and implement Write() by Malloc() | ||
| type byteBufferWrapper struct { | ||
| b byteBuffer | ||
| } | ||
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| func byteBuffer2ReadWriter(n byteBuffer) io.ReadWriter { | ||
| return &byteBufferWrapper{b: n} | ||
| } | ||
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| // Read reads data from the byteBufferWrapper's internal buffer into p. | ||
| func (bw byteBufferWrapper) Read(p []byte) (n int, err error) { | ||
| readable := bw.b.ReadableLen() | ||
| if readable == -1 { | ||
| return 0, err | ||
| } | ||
| if readable > len(p) { | ||
| readable = len(p) | ||
| } | ||
| data, err := bw.b.Next(readable) | ||
| if err != nil { | ||
| return -1, err | ||
| } | ||
| copy(p, data) | ||
| return readable, nil | ||
| } | ||
|
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| // Write writes data from the byteBufferWrapper's internal buffer into p. | ||
| func (bw byteBufferWrapper) Write(p []byte) (n int, err error) { | ||
| data, err := bw.b.Malloc(len(p)) | ||
| if err != nil { | ||
| return -1, err | ||
| } | ||
| copy(data, p) | ||
| return len(data), nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,93 @@ | ||
| // Copyright 2024 CloudWeGo Authors | ||
| // | ||
| // 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. | ||
|
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| package apache_adaptor | ||
|
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| import ( | ||
| "fmt" | ||
| "reflect" | ||
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| "github.com/cloudwego/gopkg/protocol/thrift" | ||
| ) | ||
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| type fastReader interface { | ||
| FastRead(buf []byte) (int, error) | ||
| } | ||
|
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| const OldFastWriteMethod = "FastWriteNocopy" | ||
|
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| func toFastCodec(p interface{}) (thrift.FastCodec, error) { | ||
| // if struct is from kitex_gen which is generated higher than v0.10.0，just assert gopkg thrift.FastCodec | ||
| if fast, ok := p.(thrift.FastCodec); ok { | ||
| return fast, nil | ||
| } | ||
| // if struct is lower than v0.10.0，the second argument 'bw' from FastWriterNocopy is from kitex package | ||
| // it's not good to import an old kitex dependency, so we have to use reflection | ||
| fast, ok := p.(interface { | ||
| BLength() int | ||
| FastRead(buf []byte) (int, error) | ||
| }) | ||
| if !ok { | ||
| return nil, fmt.Errorf("no BLength method for struct") | ||
| } | ||
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| method := reflect.ValueOf(p).MethodByName(OldFastWriteMethod) | ||
|
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| if !method.IsValid() { | ||
| return nil, fmt.Errorf("method not found or not exported: %s", OldFastWriteMethod) | ||
| } | ||
|
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| if method.Type().NumIn() != 2 { | ||
| return nil, fmt.Errorf("args num is not ok") | ||
| } | ||
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| if method.Type().NumOut() != 1 { | ||
| return nil, fmt.Errorf("resp num is not ok") | ||
| } | ||
|
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| if method.Type().Out(0) != reflect.TypeOf(0) { | ||
| return nil, fmt.Errorf("return type is not int") | ||
| } | ||
|
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| if method.Type().In(0) != reflect.TypeOf([]byte{}) { | ||
| return nil, fmt.Errorf("input type 1st is not []byte") | ||
| } | ||
|
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| return &oldFastCodec{ | ||
| p: fast, | ||
| method: method, | ||
| }, nil | ||
| } | ||
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| type oldFastCodec struct { | ||
| p interface { | ||
| BLength() int | ||
| FastRead(buf []byte) (int, error) | ||
| } | ||
| method reflect.Value | ||
| } | ||
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| func (c *oldFastCodec) BLength() int { | ||
| return c.p.BLength() | ||
| } | ||
|
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| func (c *oldFastCodec) FastWriteNocopy(buf []byte, bw thrift.NocopyWriter) int { | ||
| method := c.method | ||
| out := method.Call([]reflect.Value{reflect.ValueOf(buf), reflect.New(method.Type().In(1)).Elem()}) | ||
| return out[0].Interface().(int) | ||
| } | ||
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| func (c *oldFastCodec) FastRead(buf []byte) (int, error) { | ||
| return c.p.FastRead(buf) | ||
| } |