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141 lines
3.2 KiB
141 lines
3.2 KiB
/*
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Copyright 2016 The Kubernetes Authors All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package main
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import (
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"errors"
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"fmt"
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"io/ioutil"
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"os"
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"path/filepath"
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"strings"
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"github.com/spf13/cobra"
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"k8s.io/helm/pkg/chartutil"
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"k8s.io/helm/pkg/lint"
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"k8s.io/helm/pkg/lint/support"
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)
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var longLintHelp = `
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This command takes a path to a chart and runs a series of tests to verify that
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the chart is well-formed.
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If the linter encounters things that will cause the chart to fail installation,
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it will emit [ERROR] messages. If it encounters issues that break with convention
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or recommendation, it will emit [WARNING] messages.
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`
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var lintCommand = &cobra.Command{
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Use: "lint [flags] PATH",
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Short: "examines a chart for possible issues",
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Long: longLintHelp,
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RunE: lintCmd,
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}
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var flagStrict bool
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func init() {
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lintCommand.Flags().BoolVarP(&flagStrict, "strict", "", false, "fail on lint warnings")
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RootCommand.AddCommand(lintCommand)
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}
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var errLintNoChart = errors.New("No chart found for linting (missing Chart.yaml)")
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func lintCmd(cmd *cobra.Command, args []string) error {
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paths := []string{"."}
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if len(args) > 0 {
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paths = args
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}
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var lowestTolerance int
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if flagStrict {
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lowestTolerance = support.WarningSev
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} else {
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lowestTolerance = support.ErrorSev
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}
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var total int
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var failures int
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for _, path := range paths {
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if linter, err := lintChart(path); err != nil {
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fmt.Println("==> Skipping", path)
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fmt.Println(err)
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} else {
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fmt.Println("==> Linting", path)
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if len(linter.Messages) == 0 {
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fmt.Println("Lint OK")
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}
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for _, msg := range linter.Messages {
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fmt.Println(msg)
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}
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total = total + 1
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if linter.HighestSeverity >= lowestTolerance {
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failures = failures + 1
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}
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}
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fmt.Println("")
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}
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msg := fmt.Sprintf("%d chart(s) linted", total)
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if failures > 0 {
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return fmt.Errorf("%s, %d chart(s) failed", msg, failures)
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}
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fmt.Printf("%s, no failures\n", msg)
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return nil
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}
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func lintChart(path string) (support.Linter, error) {
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var chartPath string
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linter := support.Linter{}
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if strings.HasSuffix(path, ".tgz") {
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tempDir, err := ioutil.TempDir("", "helm-lint")
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if err != nil {
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return linter, err
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}
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defer os.RemoveAll(tempDir)
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file, err := os.Open(path)
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if err != nil {
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return linter, err
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}
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defer file.Close()
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if err = chartutil.Expand(tempDir, file); err != nil {
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return linter, err
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}
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base := strings.Split(filepath.Base(path), "-")[0]
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chartPath = filepath.Join(tempDir, base)
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} else {
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chartPath = path
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}
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// Guard: Error out of this is not a chart.
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if _, err := os.Stat(filepath.Join(chartPath, "Chart.yaml")); err != nil {
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return linter, errLintNoChart
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}
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return lint.All(chartPath), nil
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}
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