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feat: add atc-router module to Lua #31
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javierguerragiraldez
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,106 @@ | ||
| package atcrouter | ||
|
|
||
| import ( | ||
| "fmt" | ||
|
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| "github.com/gofrs/uuid" | ||
| router "github.com/kong/go-atc-router" | ||
| lua "github.com/yuin/gopher-lua" | ||
| ) | ||
|
|
||
| // lua: schema = new_schema() | ||
| func newSchema(l *lua.LState) int { | ||
| schemaUD := l.NewUserData() | ||
| schemaUD.Value = router.NewSchema() | ||
| schemaUD.Metatable = l.Get(lua.EnvironIndex) | ||
|
|
||
| l.Push(schemaUD) | ||
| return 1 | ||
| } | ||
|
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| func raiseUDArgError(l *lua.LState, n int, expected string, got *lua.LUserData) { | ||
| l.ArgError(n, fmt.Sprintf("%v expected, got %T", expected, got.Value)) | ||
| } | ||
|
|
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| // lua: schema:add_field(fldname, type) | ||
| func schemaAddField(l *lua.LState) int { | ||
| const ( | ||
| schemaArgNum = 1 | ||
| fieldNameArgNum = 2 | ||
| fieldTypeArgNum = 3 | ||
| ) | ||
|
|
||
| schemaUD := l.CheckUserData(schemaArgNum) | ||
| schema, ok := schemaUD.Value.(*router.Schema) | ||
| if !ok { | ||
| raiseUDArgError(l, schemaArgNum, "schema", schemaUD) | ||
|
tjasko marked this conversation as resolved.
|
||
| } | ||
|
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| fieldName := l.CheckString(fieldNameArgNum) | ||
| fieldTypeS := l.CheckString(fieldTypeArgNum) | ||
| fieldType, ok := map[string]router.FieldType{ | ||
| "String": router.String, | ||
| "IpCidr": router.IpCidr, | ||
| "IpAddr": router.IpAddr, | ||
| "Int": router.Int, | ||
| "Regex": router.Regex, | ||
| }[fieldTypeS] | ||
| if !ok { | ||
| l.RaiseError("Unknown type: %s", fieldTypeS) | ||
| } | ||
|
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| schema.AddField(fieldName, fieldType) | ||
| l.Push(lua.LTrue) | ||
| return 1 | ||
| } | ||
|
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| // lua: router = new_router(schema) | ||
| func newRouter(l *lua.LState) int { | ||
| schemaUD := l.CheckUserData(1) | ||
| schema, ok := schemaUD.Value.(*router.Schema) | ||
| if !ok { | ||
| raiseUDArgError(l, 1, "schema", schemaUD) | ||
| } | ||
|
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| routerUD := l.NewUserData() | ||
| routerUD.Value = router.NewRouter(schema) | ||
| routerUD.Metatable = l.Get(lua.EnvironIndex) | ||
|
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| l.Push(routerUD) | ||
| return 1 | ||
| } | ||
|
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| // lua: router:add_matcher(priority, uuid, atc) | ||
| func routerAddMatcher(l *lua.LState) int { | ||
| const ( | ||
| routerArgNum = 1 | ||
| priorityArgNum = 2 | ||
| uuidArgNum = 3 | ||
| atcArgNum = 4 | ||
|
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| failNumReturn = 2 | ||
| ) | ||
|
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| routerUD := l.CheckUserData(routerArgNum) | ||
| router, ok := routerUD.Value.(*router.Router) | ||
| if !ok { | ||
| raiseUDArgError(l, routerArgNum, "Router", routerUD) | ||
| } | ||
| priority := l.CheckInt(priorityArgNum) | ||
| idS := l.CheckString(uuidArgNum) | ||
| id, err := uuid.FromString(idS) | ||
| if err != nil { | ||
| l.ArgError(uuidArgNum, fmt.Sprintf("UUID expected, got %s", idS)) | ||
| } | ||
| atc := l.CheckString(atcArgNum) | ||
|
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| err = router.AddMatcher(priority, id, atc) | ||
| if err != nil { | ||
| l.Push(lua.LNil) | ||
| l.Push(lua.LString(err.Error())) | ||
| return failNumReturn | ||
| } | ||
|
|
||
| l.Push(lua.LTrue) | ||
| return 1 | ||
| } | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,38 @@ | ||
| package atcrouter | ||
|
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| import lua "github.com/yuin/gopher-lua" | ||
|
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| func setCreator(l *lua.LState, t *lua.LTable, creatorName string) { | ||
| creator := l.GetField(t, creatorName) | ||
| if creator != lua.LNil { | ||
| submodMT := l.NewTable() | ||
| l.SetField(submodMT, "__index", t) | ||
| l.SetFEnv(creator, submodMT) | ||
| } | ||
| } | ||
|
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| func SchemaLoader(l *lua.LState) int { | ||
| t := l.NewTable() | ||
| l.SetFuncs(t, map[string]lua.LGFunction{ | ||
| "new": newSchema, | ||
| "add_field": schemaAddField, | ||
| }) | ||
|
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| setCreator(l, t, "new") | ||
|
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| l.Push(t) | ||
| return 1 | ||
| } | ||
|
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| func RouterLoader(l *lua.LState) int { | ||
| t := l.NewTable() | ||
| l.SetFuncs(t, map[string]lua.LGFunction{ | ||
| "new": newRouter, | ||
| "add_matcher": routerAddMatcher, | ||
| }) | ||
|
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| setCreator(l, t, "new") | ||
|
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| l.Push(t) | ||
| return 1 | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,6 @@ | ||
| #!/bin/bash -e | ||
|
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| go mod tidy | ||
| go mod download | ||
|
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| . $(go list -m -f '{{.Dir}}' github.com/kong/go-atc-router)/build-deps.sh --build --install --rm |
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