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feat(convert): convert to KIC (#1050)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,126 @@ | ||
| package cmd | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "log" | ||
| "strings" | ||
|
|
||
| "github.com/kong/deck/kong2kic" | ||
| "github.com/kong/go-apiops/logbasics" | ||
| "github.com/kong/go-database-reconciler/pkg/file" | ||
| "github.com/spf13/cobra" | ||
| ) | ||
|
|
||
| var ( | ||
| cmdKong2KicInputFilename string | ||
| cmdKong2KicOutputFilename string | ||
| cmdKong2KicOutputFormat string | ||
| cmdKong2KicClassName string | ||
| cmdKong2KicIngress bool | ||
| cmdKong2KicVersion string | ||
| ) | ||
|
|
||
| // Executes the CLI command "kong2kic" | ||
| func executeKong2Kic(cmd *cobra.Command, _ []string) error { | ||
| _ = sendAnalytics("file-kong2kic", "", modeLocal) | ||
| var ( | ||
| outputContent *file.Content | ||
| err error | ||
| outputFileFormat file.Format | ||
| yamlOrJSON string | ||
| ) | ||
|
|
||
| kong2kic.ClassName = cmdKong2KicClassName | ||
| verbosity, _ := cmd.Flags().GetInt("verbose") | ||
| logbasics.Initialize(log.LstdFlags, verbosity) | ||
|
|
||
| inputContent, err := file.GetContentFromFiles([]string{cmdKong2KicInputFilename}, false) | ||
| if err != nil { | ||
| return fmt.Errorf("failed reading input file '%s'; %w", cmdKong2KicInputFilename, err) | ||
| } | ||
|
|
||
| outputFileFormat, yamlOrJSON, err = validateInput(cmdKong2KicOutputFormat) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| outputContent = inputContent.DeepCopy() | ||
| err = kong2kic.WriteContentToFile(outputContent, cmdKong2KicOutputFilename, outputFileFormat, yamlOrJSON) | ||
| if err != nil { | ||
| return fmt.Errorf("failed converting Kong to Ingress '%s'; %w", cmdKong2KicInputFilename, err) | ||
| } | ||
|
|
||
| return nil | ||
| } | ||
|
|
||
| func validateInput(cmdKong2KicOutputFormat string) ( | ||
| outputFileFormat file.Format, | ||
| yamlOrJSON string, | ||
| err error, | ||
| ) { | ||
| outputFormat := strings.ToUpper(cmdKong2KicOutputFormat) | ||
| version := cmdKong2KicVersion | ||
| ingress := cmdKong2KicIngress | ||
|
|
||
| // if cmdKong2KicVersion is not 2 or 3 set an error | ||
| if version != "2" && version != "3" { | ||
| err = fmt.Errorf("invalid KIC version '%s'. Please use --help for more information", version) | ||
| } else { | ||
| switch { | ||
| case version == "3" && !ingress: | ||
| outputFileFormat = kong2kic.KICV3GATEWAY | ||
| case version == "3" && ingress: | ||
| outputFileFormat = kong2kic.KICV3INGRESS | ||
| case version == "2" && !ingress: | ||
| outputFileFormat = kong2kic.KICV2GATEWAY | ||
| case version == "2" && ingress: | ||
| outputFileFormat = kong2kic.KICV2INGRESS | ||
| default: | ||
| err = fmt.Errorf("invalid combination of parameters. Please use --help for more information") | ||
| } | ||
|
|
||
| if outputFormat == file.YAML { | ||
| yamlOrJSON = file.YAML | ||
| } else if outputFormat == file.JSON { | ||
| yamlOrJSON = file.JSON | ||
| } | ||
| } | ||
|
|
||
| return outputFileFormat, yamlOrJSON, err | ||
| } | ||
|
|
||
| // | ||
| // | ||
| // Define the CLI data for the kong2kic command | ||
| // | ||
| // | ||
|
|
||
| func newKong2KicCmd() *cobra.Command { | ||
| kong2KicCmd := &cobra.Command{ | ||
| Use: "kong2kic", | ||
| Short: "Convert Kong configuration files to Kong Ingress Controller (KIC) manifests", | ||
| Long: `Convert Kong configuration files to Kong Ingress Controller (KIC) manifests. | ||
| The kong2kic subcommand transforms Kong’s configuration files, written in the deck format, | ||
| into Kubernetes manifests suitable for the Kong Ingress Controller. By default kong2kic generates | ||
| manifests for KIC v3.x using the Kubernetes Gateway API. Only HTTP/HTTPS routes are supported.`, | ||
| RunE: executeKong2Kic, | ||
| Args: cobra.NoArgs, | ||
| } | ||
|
|
||
| kong2KicCmd.Flags().StringVarP(&cmdKong2KicInputFilename, "state", "s", "-", | ||
| "decK file to process. Use - to read from stdin.") | ||
| kong2KicCmd.Flags().StringVarP(&cmdKong2KicOutputFilename, "output-file", "o", "-", | ||
| "Output file to write. Use - to write to stdout.") | ||
| kong2KicCmd.Flags().StringVarP(&cmdKong2KicOutputFormat, "format", "f", "yaml", | ||
| "Output file format: json or yaml.") | ||
| kong2KicCmd.Flags().StringVar(&cmdKong2KicVersion, "kic-version", "3", | ||
| "Generate manifests for KIC v3 or v2. Possible values are 2 or 3.") | ||
| kong2KicCmd.Flags().StringVar(&cmdKong2KicClassName, "class-name", "kong", | ||
| `Value to use for "kubernetes.io/ingress.class" ObjectMeta.Annotations and for | ||
| "parentRefs.name" in the case of HTTPRoute.`) | ||
| kong2KicCmd.Flags().BoolVar(&cmdKong2KicIngress, "ingress", false, | ||
| `Use Kubernetes Ingress API manifests instead of Gateway API manifests.`) | ||
|
|
||
| return kong2KicCmd | ||
| } |
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