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Merge pull request #184 from jrnd-io/183-feat-add-lua-script-producer
feat: add lua script producer
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,25 @@ | ||
| // Copyright © 2024 JR team | ||
| // | ||
| // Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| // of this software and associated documentation files (the "Software"), to deal | ||
| // in the Software without restriction, including without limitation the rights | ||
| // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| // copies of the Software, and to permit persons to whom the Software is | ||
| // furnished to do so, subject to the following conditions: | ||
| // | ||
| // The above copyright notice and this permission notice shall be included in | ||
| // all copies or substantial portions of the Software. | ||
| // | ||
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
| // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | ||
| // THE SOFTWARE. | ||
| package luascript | ||
|
|
||
| type Config struct { | ||
| ScriptFile string `json:"script_file"` | ||
| Script string `json:"script"` | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,104 @@ | ||
| // Copyright © 2024 JR team | ||
| // Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| // of this software and associated documentation files (the "Software"), to deal | ||
| // in the Software without restriction, including without limitation the rights | ||
| // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| // copies of the Software, and to permit persons to whom the Software is | ||
| // furnished to do so, subject to the following conditions: | ||
| // | ||
| // The above copyright notice and this permission notice shall be included in | ||
| // all copies or substantial portions of the Software. | ||
| // | ||
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
| // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | ||
| // THE SOFTWARE. | ||
| package luascript | ||
|
|
||
| import ( | ||
| "encoding/json" | ||
| "os" | ||
| "strings" | ||
|
|
||
| "github.com/rs/zerolog/log" | ||
| libs "github.com/vadv/gopher-lua-libs" | ||
| lua "github.com/yuin/gopher-lua" | ||
| "github.com/yuin/gopher-lua/parse" | ||
| ) | ||
|
|
||
| const ( | ||
| ScriptName = "luajr" | ||
| ) | ||
|
|
||
| type Producer struct { | ||
| configuration Config | ||
| luaProtoFunction *lua.FunctionProto | ||
| } | ||
|
|
||
| func (p *Producer) Initialize(configFile string) { | ||
| cfgBytes, err := os.ReadFile(configFile) | ||
| if err != nil { | ||
| log.Fatal().Err(err).Msg("Failed to read config file") | ||
| } | ||
|
|
||
| config := Config{} | ||
| if err := json.Unmarshal(cfgBytes, &config); err != nil { | ||
| log.Fatal().Err(err).Msg("Failed to unmarshal config") | ||
| } | ||
|
|
||
| p.InitializeFromConfig(config) | ||
| } | ||
|
|
||
| func (p *Producer) InitializeFromConfig(config Config) { | ||
|
|
||
| var err error | ||
| if config.Script == "" && config.ScriptFile == "" { | ||
| log.Fatal().Msg("script or script_file is required") | ||
| } | ||
|
|
||
| var scriptBytes []byte | ||
| if config.ScriptFile != "" { | ||
| scriptBytes, err = os.ReadFile(config.ScriptFile) | ||
| if err != nil { | ||
| log.Fatal().Err(err).Str("script_file", config.ScriptFile).Msg("Failed to read script file") | ||
| } | ||
| } else { | ||
| scriptBytes = []byte(config.Script) | ||
| } | ||
|
|
||
| chunk, err := parse.Parse(strings.NewReader(string(scriptBytes)), ScriptName) | ||
| if err != nil { | ||
| log.Fatal().Err(err).Msg("Failed to parse script") | ||
| } | ||
| p.luaProtoFunction, err = lua.Compile(chunk, ScriptName) | ||
| if err != nil { | ||
| log.Fatal().Err(err).Msg("Failed to compile script") | ||
| } | ||
|
|
||
| p.configuration = config | ||
|
|
||
| } | ||
|
|
||
| func (p *Producer) Produce(k []byte, v []byte, _ any) { | ||
|
|
||
| L := lua.NewState() | ||
| libs.Preload(L) | ||
|
|
||
| L.SetGlobal("k", lua.LString(k)) | ||
| L.SetGlobal("v", lua.LString(string(v))) | ||
|
|
||
| lf := L.NewFunctionFromProto(p.luaProtoFunction) | ||
| L.Push(lf) | ||
| err := L.PCall(0, 0, nil) | ||
| if err != nil { | ||
| log.Fatal().Err(err).Msg("Failed to execute script") | ||
| } | ||
|
|
||
| } | ||
|
|
||
| func (p *Producer) Close() error { | ||
| return nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,53 @@ | ||
| // Copyright © 2024 JR team | ||
| // Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| // of this software and associated documentation files (the "Software"), to deal | ||
| // in the Software without restriction, including without limitation the rights | ||
| // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| // copies of the Software, and to permit persons to whom the Software is | ||
| // furnished to do so, subject to the following conditions: | ||
| // | ||
| // The above copyright notice and this permission notice shall be included in | ||
| // all copies or substantial portions of the Software. | ||
| // | ||
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
| // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | ||
| // THE SOFTWARE. | ||
| package luascript_test | ||
|
|
||
| import ( | ||
| "testing" | ||
|
|
||
| "github.com/jrnd-io/jr/pkg/producers/luascript" | ||
| ) | ||
|
|
||
| func TestProducer(t *testing.T) { | ||
|
|
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| testCases := []struct { | ||
| name string | ||
| config luascript.Config | ||
| }{ | ||
| { | ||
| name: "testprint", | ||
| config: luascript.Config{ | ||
| Script: ` json = require "json" | ||
| print(k) | ||
| json.decode(v)`, | ||
| }, | ||
| }, | ||
| } | ||
| for _, tc := range testCases { | ||
| tc := tc | ||
| someJson := `{"key": "value"}` | ||
|
|
||
| t.Run(tc.name, func(t *testing.T) { | ||
| p := &luascript.Producer{} | ||
| p.InitializeFromConfig(tc.config) | ||
| p.Produce([]byte("somekey"), []byte(someJson), nil) | ||
| }) | ||
|
|
||
| } | ||
| } |