/
repl.go
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/
repl.go
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// © 2022-2023 Khulnasoft Limited All rights reserved.
//
// 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 cmd
import (
"context"
"encoding/json"
"fmt"
"github.com/spf13/cobra"
"github.com/khulnasoft/policy-engine/pkg/models"
"github.com/khulnasoft/policy-engine/pkg/rego/repl"
)
var replFlags struct {
Init []string
Cloud cloudOptions
}
var replCmd = &cobra.Command{
Use: "repl [-d <rules/metadata>...] [input]",
Short: "Policy Engine",
RunE: func(cmd *cobra.Command, args []string) error {
ctx := context.Background()
logger := cmdLogger()
var inputState *models.State
var err error
if len(args) > 1 {
return fmt.Errorf("expected at most 1 input")
} else if len(args) == 1 {
inputState, err = loadSingleInput(ctx, logger, args[0])
} else if replFlags.Cloud.enabled() {
inputState, err = getCloudStates(ctx, replFlags.Cloud)
}
if err != nil {
return err
}
replInput, err := jsonMarshalUnmarshal(inputState)
if err != nil {
return err
}
err = repl.Repl(ctx, repl.Options{
Providers: rootCmdRegoProviders(),
Init: replFlags.Init,
Input: replInput,
})
if err != nil {
return err
}
return nil
},
}
func jsonMarshalUnmarshal(v interface{}) (map[string]interface{}, error) {
if b, err := json.Marshal(v); err != nil {
return nil, err
} else {
out := map[string]interface{}{}
if err := json.Unmarshal(b, &out); err != nil {
return nil, err
}
return out, nil
}
}
func init() {
replCmd.Flags().StringSliceVarP(&replFlags.Init, "init", "i", nil, "execute Rego statement(s) before starting REPL")
replFlags.Cloud.addFlags(replCmd)
}