feat: undolog add decompressor func #457
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,40 @@ | ||
| /* | ||
| * 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. | ||
| */ | ||
|
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| package compressor | ||
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| var compressorFactory map[string]Compressor | ||
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| func (c CompressorType) GetCompressor() Compressor { | ||
| if compressorFactory == nil { | ||
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| compressorFactory = map[string]Compressor{ | ||
| CompressorNone.String(): NewNone(), | ||
| CompressorGzip.String(): NewGzip(), | ||
| CompressorZip.String(): NewZip(), | ||
| CompressorBzip2.String(): NewBizp2(), | ||
| CompressorLz4.String(): NewLz4(), | ||
| CompressorZstd.String(): NewZstd(), | ||
| CompressorDeflate.String(): NewDeflateCompress(), | ||
| } | ||
| } | ||
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| if v, ok := compressorFactory[c.String()]; ok { | ||
| return v | ||
| } else { | ||
| panic("compressor type not implement") | ||
| } | ||
| } | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,59 @@ | ||
| /* | ||
| * 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. | ||
| */ | ||
|
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| package compressor | ||
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| //go:generate stringer -type=CompressorType | ||
| type CompressorType int8 | ||
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| const ( | ||
| CompressorNone CompressorType = iota | ||
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| CompressorGzip | ||
| CompressorZip | ||
| CompressorSevenz | ||
| CompressorBzip2 | ||
| CompressorLz4 | ||
| CompressorDefault | ||
|
There was a problem hiding this comment.
CompressorDefault和CompressorMaxl好像和java对不上？ |
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| CompressorZstd | ||
| CompressorDeflate | ||
| CompressorMaxl | ||
| ) | ||
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| var compressor map[string]CompressorType | ||
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| func GetByName(name string) CompressorType { | ||
| if compressor == nil { | ||
|
There was a problem hiding this comment. 改为switch...case，每次返回一个新的对象，这样就不要用这个map了 There was a problem hiding this comment. 嗯嗯，请教一下为何改为 switch case,感觉这里实现问题不大。 |
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| compressor = map[string]CompressorType{ | ||
| CompressorNone.String(): CompressorNone, | ||
| CompressorGzip.String(): CompressorGzip, | ||
| CompressorZip.String(): CompressorZip, | ||
| CompressorSevenz.String(): CompressorSevenz, | ||
| CompressorBzip2.String(): CompressorBzip2, | ||
| CompressorLz4.String(): CompressorLz4, | ||
| CompressorDefault.String(): CompressorDefault, | ||
| CompressorZstd.String(): CompressorZstd, | ||
| CompressorDeflate.String(): CompressorDeflate, | ||
| CompressorMaxl.String(): CompressorMaxl, | ||
| } | ||
| } | ||
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| if v, ok := compressor[name]; ok { | ||
| return v | ||
| } else { | ||
| return CompressorNone | ||
| } | ||
| } | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,37 @@ | ||
| /* | ||
| * 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. | ||
| */ | ||
|
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| package compressor | ||
|
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| type NoneCompressor struct { | ||
| } | ||
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| func NewNone() *NoneCompressor { | ||
| return &NoneCompressor{} | ||
| } | ||
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| func (n *NoneCompressor) Compress(data []byte) ([]byte, error) { | ||
| return data, nil | ||
| } | ||
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| func (n *NoneCompressor) Decompress(data []byte) ([]byte, error) { | ||
| return data, nil | ||
| } | ||
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| func (n *NoneCompressor) GetCompressorType() CompressorType { | ||
| return CompressorNone | ||
| } |
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没有参数不用New
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done