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https://github.com/notherealmarco/coredns-deployment.git
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37f5d0dad4
* Initial commit for the corefile-tool cli for the migration tool * cleanup implementation * nit * add fn to get corefile path * add released command and improve readme
47 lines
1.6 KiB
Go
47 lines
1.6 KiB
Go
package cmd
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import (
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"fmt"
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"github.com/coredns/deployment/kubernetes/migration"
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"github.com/spf13/cobra"
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)
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// NewDefaultCmd represents the default command
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func NewDefaultCmd() *cobra.Command {
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defaultCmd := &cobra.Command{
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Use: "default",
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Short: "default returns true if the Corefile is the default for a that version of Kubernetes. If the Kubernetes version is omitted, returns true if the Corefile is the default for any version.",
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Example: `# See if the Corefile is the default in CoreDNS v1.4.0.
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corefile-tool default --k8sversion 1.4.0 --corefile /path/to/Corefile`,
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RunE: func(cmd *cobra.Command, args []string) error {
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k8sversion, _ := cmd.Flags().GetString("k8sversion")
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corefile, _ := cmd.Flags().GetString("corefile")
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isDefault, err := defaultCorefileFromPath(k8sversion, corefile)
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if err != nil {
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return fmt.Errorf("error while checking if the Corefile is the default: %v \n", err)
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}
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fmt.Println(isDefault)
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return nil
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},
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}
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defaultCmd.Flags().String("k8sversion", "", "The Kubernetes version for which you are checking the default.")
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defaultCmd.Flags().String("corefile", "", "Required: The path where your Corefile is located.")
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defaultCmd.MarkFlagRequired("corefile")
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return defaultCmd
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}
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// defaultCorefileFromPath takes the path where the Corefile is located and checks
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// if the Corefile is the default for that version of Kubernetes.
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func defaultCorefileFromPath(k8sVersion, corefilePath string) (bool, error) {
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fileBytes, err := getCorefileFromPath(corefilePath)
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if err != nil {
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return false, err
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}
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corefileStr := string(fileBytes)
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return migration.Default(k8sVersion, corefileStr), nil
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}
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