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fn_grok.go
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/
fn_grok.go
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// Unless explicitly stated otherwise all files in this repository are licensed
// under the MIT License.
// This product includes software developed at Guance Cloud (https://www.guance.com/).
// Copyright 2021-present Guance, Inc.
package funcs
import (
"fmt"
"github.com/GuanceCloud/cliutils/pipeline/ptinput"
"github.com/GuanceCloud/grok"
"github.com/GuanceCloud/platypus/pkg/ast"
"github.com/GuanceCloud/platypus/pkg/engine/runtime"
"github.com/GuanceCloud/platypus/pkg/errchain"
)
func GrokChecking(ctx *runtime.Context, funcExpr *ast.CallExpr) *errchain.PlError {
if funcExpr.Grok != nil {
return nil
}
if len(funcExpr.Param) < 2 || len(funcExpr.Param) > 3 {
return runtime.NewRunError(ctx, fmt.Sprintf(
"func %s expected 2 or 3 args", funcExpr.Name), funcExpr.NamePos)
}
if len(funcExpr.Param) == 3 {
switch funcExpr.Param[2].NodeType { //nolint:exhaustive
case ast.TypeBoolLiteral:
default:
return runtime.NewRunError(ctx, fmt.Sprintf(
"param key expect BoolLiteral, got `%s'",
funcExpr.Param[2].NodeType), funcExpr.Param[2].StartPos())
}
}
if _, err := getKeyName(funcExpr.Param[0]); err != nil {
return runtime.NewRunError(ctx, err.Error(), funcExpr.Param[0].StartPos())
}
var pattern string
switch funcExpr.Param[1].NodeType { //nolint:exhaustive
case ast.TypeStringLiteral:
pattern = funcExpr.Param[1].StringLiteral.Val
default:
return runtime.NewRunError(ctx, fmt.Sprintf(
"expect StringLiteral, got %s",
funcExpr.Param[1].NodeType), funcExpr.Param[1].StartPos())
}
gRe, err := grok.CompilePattern(pattern, ctx)
if err != nil {
return runtime.NewRunError(ctx, err.Error(), funcExpr.NamePos)
}
funcExpr.Grok = gRe
return nil
}
func Grok(ctx *runtime.Context, funcExpr *ast.CallExpr) *errchain.PlError {
grokRe := funcExpr.Grok
if grokRe == nil {
ctx.Regs.ReturnAppend(false, ast.Bool)
return runtime.NewRunError(ctx, "no grok obj", funcExpr.NamePos)
}
var err error
key, err := getKeyName(funcExpr.Param[0])
if err != nil {
ctx.Regs.ReturnAppend(false, ast.Bool)
return runtime.NewRunError(ctx, err.Error(), funcExpr.Param[0].StartPos())
}
val, err := ctx.GetKeyConv2Str(key)
if err != nil {
ctx.Regs.ReturnAppend(false, ast.Bool)
return nil
}
trimSpace := true
if len(funcExpr.Param) == 3 {
switch funcExpr.Param[2].NodeType { //nolint:exhaustive
case ast.TypeBoolLiteral:
trimSpace = funcExpr.Param[2].BoolLiteral.Val
default:
ctx.Regs.ReturnAppend(false, ast.Bool)
return runtime.NewRunError(ctx, fmt.Sprintf("param key expect BoolLiteral, got `%s'",
funcExpr.Param[2].NodeType), funcExpr.Param[2].StartPos())
}
}
m, _, err := grokRe.RunWithTypeInfo(val, trimSpace)
if err != nil {
ctx.Regs.ReturnAppend(false, ast.Bool)
return nil
}
for k, v := range m {
var dtype ast.DType
if v == nil {
dtype = ast.Nil
} else {
switch v.(type) {
case int64:
dtype = ast.Int
case float64:
dtype = ast.Float
case string:
dtype = ast.String
case bool:
dtype = ast.Bool
default:
continue
}
}
if err := addKey2PtWithVal(ctx.InData(), k, v, dtype, ptinput.KindPtDefault); err != nil {
l.Debug(err)
ctx.Regs.ReturnAppend(false, ast.Bool)
return nil
}
}
ctx.Regs.ReturnAppend(true, ast.Bool)
return nil
}