coredns-deployment/kubernetes/corefile-tool/cmd/unsupported.go
Sandeep Rajan 37f5d0dad4 Adding CLI for the migration tool (#154)
* 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
2019-04-24 11:22:13 -04:00

52 lines
1.9 KiB
Go

package cmd
import (
"fmt"
"github.com/coredns/deployment/kubernetes/migration"
"github.com/spf13/cobra"
)
// NewUnsupportedCmd represents the unsupported command
func NewUnsupportedCmd() *cobra.Command {
unsupportedCmd := &cobra.Command{
Use: "unsupported",
Short: "Unsupported returns a list of plugins that are not recognized/supported by the migration tool (but may still be valid in CoreDNS).",
Example: `# See unsupported plugins CoreDNS from v1.4.0 to v1.5.0.
corefile-tool unsupported --from 1.4.0 --to 1.5.0 --corefile /path/to/Corefile`,
RunE: func(cmd *cobra.Command, args []string) error {
from, _ := cmd.Flags().GetString("from")
to, _ := cmd.Flags().GetString("to")
corefile, _ := cmd.Flags().GetString("corefile")
unsupported, err := unsupportedCorefileFromPath(from, to, corefile)
if err != nil {
return fmt.Errorf("error while listing deprecated plugins: %v \n", err)
}
for _, unsup := range unsupported {
fmt.Println(unsup.ToString())
}
return nil
},
}
unsupportedCmd.Flags().String("from", "", "Required: The version you are migrating from. ")
unsupportedCmd.MarkFlagRequired("from")
unsupportedCmd.Flags().String("to", "", "Required: The version you are migrating to.")
unsupportedCmd.MarkFlagRequired("to")
unsupportedCmd.Flags().String("corefile", "", "Required: The path where your Corefile is located.")
unsupportedCmd.MarkFlagRequired("corefile")
return unsupportedCmd
}
// unsupportedCorefileFromPath takes the path where the Corefile is located and returns a list of plugins
// that have been removed.
func unsupportedCorefileFromPath(fromCoreDNSVersion, toCoreDNSVersion, corefilePath string) ([]migration.Notice, error) {
fileBytes, err := getCorefileFromPath(corefilePath)
if err != nil {
return nil, err
}
corefileStr := string(fileBytes)
return migration.Unsupported(fromCoreDNSVersion, toCoreDNSVersion, corefileStr)
}