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print.go
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print.go
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// Copyright 2023 Mia srl
//
// 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.
package core
import (
"encoding/json"
"fmt"
"io"
"time"
"github.com/open-policy-agent/opa/topdown/print"
)
func NewPrintHook(w io.Writer, policy string) print.Hook {
return printHook{
w: w,
policyName: policy,
}
}
type printHook struct {
w io.Writer
policyName string
}
type LogPrinter struct {
Level int `json:"level"`
Message string `json:"msg"`
Time int64 `json:"time"`
PolicyName string `json:"policyName"`
}
func (h printHook) Print(_ print.Context, message string) error {
structMessage := LogPrinter{
Level: 10,
Message: message,
Time: time.Now().UnixNano() / 1000,
PolicyName: h.policyName,
}
msg, err := json.Marshal(structMessage)
if err != nil {
return err
}
_, err = fmt.Fprintln(h.w, string(msg))
return err
}