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Bader Boland
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Feb 6, 2020
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| Original file line number | Diff line number | Diff line change |
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| // Copyright 2020 FairwindsOps Inc | ||
| // | ||
| // 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. | ||
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| package cmd | ||
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| import ( | ||
| "bytes" | ||
| "encoding/json" | ||
| "fmt" | ||
| "io/ioutil" | ||
| "net/http" | ||
| "os" | ||
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| "github.com/spf13/cobra" | ||
| "github.com/sirupsen/logrus" | ||
| "github.com/fairwindsops/polaris/pkg/validator" | ||
| conf "github.com/fairwindsops/polaris/pkg/config" | ||
| "github.com/fairwindsops/polaris/pkg/kube" | ||
| "sigs.k8s.io/yaml" | ||
| ) | ||
|
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| var setExitCode bool | ||
| var minScore int | ||
| var auditOutputURL string | ||
| var auditOutputFile string | ||
| var auditOutputFormat string | ||
| var displayName string | ||
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| func init() { | ||
| rootCmd.AddCommand(auditCmd) | ||
| auditCmd.PersistentFlags().StringVar(&auditPath, "audit-path", "", "If specified, audits one or more YAML files instead of a cluster.") | ||
| auditCmd.PersistentFlags().BoolVar(&setExitCode, "set-exit-code-on-error", false, "Set an exit code of 3 when the audit contains error-level issues.") | ||
| auditCmd.PersistentFlags().IntVar(&minScore, "set-exit-code-below-score", 0, "Set an exit code of 4 when the score is below this threshold (1-100).") | ||
| auditCmd.PersistentFlags().StringVar(&auditOutputURL, "output-url", "", "Destination URL to send audit results.") | ||
| auditCmd.PersistentFlags().StringVar(&auditOutputFile, "output-file", "", "Destination file for audit results.") | ||
| auditCmd.PersistentFlags().StringVar(&auditOutputFormat, "output-format", "json", "Output format for results - json, yaml, or score.") | ||
| auditCmd.PersistentFlags().StringVar(&displayName, "display-name", "", "An optional identifier for the audit.") | ||
| } | ||
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| var auditCmd = &cobra.Command{ | ||
| Use: "audit", | ||
| Short: "Runs a one-time audit.", | ||
| Long: `Runs a one-time audit.`, | ||
| Run: func(cmd *cobra.Command, args []string) { | ||
| if displayName != "" { | ||
| c.DisplayName = displayName | ||
| } | ||
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| auditData := runAndReportAudit(c, auditPath, auditOutputFile, auditOutputURL, auditOutputFormat) | ||
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| summary := auditData.GetSummary() | ||
| score := summary.GetScore() | ||
| if setExitCode && summary.Errors > 0 { | ||
| logrus.Infof("%d errors found in audit", summary.Errors) | ||
| os.Exit(3) | ||
| } else if minScore != 0 && score < uint(minScore) { | ||
| logrus.Infof("Audit score of %d is less than the provided minimum of %d", score, minScore) | ||
| os.Exit(4) | ||
| } | ||
| }, | ||
| } | ||
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| func runAndReportAudit(c conf.Configuration, auditPath string, outputFile string, outputURL string, outputFormat string) validator.AuditData { | ||
| // Create a kubernetes client resource provider | ||
| k, err := kube.CreateResourceProvider(auditPath) | ||
| if err != nil { | ||
| logrus.Errorf("Error fetching Kubernetes resources %v", err) | ||
| os.Exit(1) | ||
| } | ||
| auditData, err := validator.RunAudit(c, k) | ||
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| if err != nil { | ||
| logrus.Errorf("Error while running audit on resources: %v", err) | ||
| os.Exit(1) | ||
| } | ||
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| var outputBytes []byte | ||
| if outputFormat == "score" { | ||
| outputBytes = []byte(fmt.Sprintf("%d\n", auditData.GetSummary().GetScore())) | ||
| } else if outputFormat == "yaml" { | ||
| jsonBytes, err := json.Marshal(auditData) | ||
| if err == nil { | ||
| outputBytes, err = yaml.JSONToYAML(jsonBytes) | ||
| } | ||
| } else { | ||
| outputBytes, err = json.MarshalIndent(auditData, "", " ") | ||
| } | ||
| if err != nil { | ||
| logrus.Errorf("Error marshalling audit: %v", err) | ||
| os.Exit(1) | ||
| } | ||
| if outputURL == "" && outputFile == "" { | ||
| os.Stdout.Write(outputBytes) | ||
| } else { | ||
| if outputURL != "" { | ||
| req, err := http.NewRequest("POST", outputURL, bytes.NewBuffer(outputBytes)) | ||
|
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| if err != nil { | ||
| logrus.Errorf("Error building request for output: %v", err) | ||
| os.Exit(1) | ||
| } | ||
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| if outputFormat == "json" { | ||
| req.Header.Set("Content-Type", "application/json") | ||
| } else if outputFormat == "yaml" { | ||
| req.Header.Set("Content-Type", "application/x-yaml") | ||
| } else { | ||
| req.Header.Set("Content-Type", "text/plain") | ||
| } | ||
| client := &http.Client{} | ||
| resp, err := client.Do(req) | ||
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| if err != nil { | ||
| logrus.Errorf("Error making request for output: %v", err) | ||
| os.Exit(1) | ||
| } | ||
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| defer resp.Body.Close() | ||
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| body, err := ioutil.ReadAll(resp.Body) | ||
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| if err != nil { | ||
| logrus.Errorf("Error reading response: %v", err) | ||
| os.Exit(1) | ||
| } | ||
|
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| logrus.Infof("Received response: %v", body) | ||
| } | ||
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| if outputFile != "" { | ||
| err := ioutil.WriteFile(outputFile, []byte(outputBytes), 0644) | ||
| if err != nil { | ||
| logrus.Errorf("Error writing output to file: %v", err) | ||
| os.Exit(1) | ||
| } | ||
| } | ||
| } | ||
| return auditData | ||
| } |
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