github.com/fafucoder/cilium@v1.6.11/cilium/cmd/policy_import.go (about)

     1  // Copyright 2017 Authors of Cilium
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package cmd
    16  
    17  import (
    18  	"encoding/json"
    19  	"fmt"
    20  	"os"
    21  
    22  	"github.com/cilium/cilium/pkg/command"
    23  	"github.com/cilium/cilium/pkg/logging/logfields"
    24  	"github.com/spf13/cobra"
    25  )
    26  
    27  var printPolicy bool
    28  
    29  // policyImportCmd represents the policy_import command
    30  var policyImportCmd = &cobra.Command{
    31  	Use:   "import <path>",
    32  	Short: "Import security policy in JSON format",
    33  	Example: `  cilium policy import ~/policy.json
    34    cilium policy import ./policies/app/`,
    35  	PreRun: requirePath,
    36  	Run: func(cmd *cobra.Command, args []string) {
    37  		path := args[0]
    38  		if ruleList, err := loadPolicy(path); err != nil {
    39  			Fatalf("Cannot parse policy %s: %s\n", path, err)
    40  		} else {
    41  			log.WithField("rule", logfields.Repr(ruleList)).Debug("Constructed policy object for import")
    42  
    43  			// Ignore request if no policies have been found
    44  			if len(ruleList) == 0 {
    45  				fmt.Printf("No policy specified")
    46  				return
    47  			}
    48  
    49  			for _, r := range ruleList {
    50  				if err := r.Sanitize(); err != nil {
    51  					Fatalf("%s", err)
    52  				}
    53  			}
    54  
    55  			jsonPolicy, err := json.MarshalIndent(ruleList, "", "  ")
    56  			if err != nil {
    57  				Fatalf("Cannot marshal policy: %s\n", err)
    58  			}
    59  			if resp, err := client.PolicyPut(string(jsonPolicy)); err != nil {
    60  				Fatalf("Cannot import policy: %s\n", err)
    61  			} else if command.OutputJSON() {
    62  				if err := command.PrintOutput(resp); err != nil {
    63  					os.Exit(1)
    64  				}
    65  			} else if printPolicy {
    66  				fmt.Printf("%s\nRevision: %d\n", resp.Policy, resp.Revision)
    67  			} else {
    68  				fmt.Printf("Revision: %d\n", resp.Revision)
    69  			}
    70  		}
    71  	},
    72  }
    73  
    74  func init() {
    75  	policyCmd.AddCommand(policyImportCmd)
    76  	policyImportCmd.Flags().BoolVarP(&printPolicy, "print", "", false, "Print policy after import")
    77  	command.AddJSONOutput(policyImportCmd)
    78  }