mirror of https://github.com/knative/func.git
125 lines
3.1 KiB
Go
125 lines
3.1 KiB
Go
package cmd
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import (
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"encoding/json"
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"encoding/xml"
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"errors"
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"fmt"
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"gopkg.in/yaml.v2"
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"github.com/boson-project/faas"
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"github.com/boson-project/faas/knative"
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"github.com/ory/viper"
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"github.com/spf13/cobra"
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)
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func init() {
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root.AddCommand(describeCmd)
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describeCmd.Flags().StringP("output", "o", "yaml", "optionally specify output format (yaml,xml,json).")
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describeCmd.Flags().StringP("name", "n", "", "optionally specify an explicit name for the serive, overriding path-derivation. $FAAS_NAME")
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describeCmd.RegisterFlagCompletionFunc("name", func(cmd *cobra.Command, args []string, toComplete string) (strings []string, directive cobra.ShellCompDirective) {
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lister, err := knative.NewLister(faas.DefaultNamespace)
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if err != nil {
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directive = cobra.ShellCompDirectiveError
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return
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}
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s, err := lister.List()
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if err != nil {
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directive = cobra.ShellCompDirectiveError
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return
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}
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strings = s
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directive = cobra.ShellCompDirectiveDefault
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return
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})
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describeCmd.RegisterFlagCompletionFunc("output", func(cmd *cobra.Command, args []string, toComplete string) (strings []string, directive cobra.ShellCompDirective) {
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directive = cobra.ShellCompDirectiveDefault
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strings = []string{"yaml", "xml", "json"}
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return
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})
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}
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var describeCmd = &cobra.Command{
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Use: "describe",
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Short: "Describe Service Function",
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Long: `Describe Service Function`,
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SuggestFor: []string{"desc"},
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ValidArgsFunction: func(cmd *cobra.Command, args []string, toComplete string) (strings []string, directive cobra.ShellCompDirective) {
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lister, err := knative.NewLister(faas.DefaultNamespace)
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if err != nil {
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directive = cobra.ShellCompDirectiveError
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return
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}
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s, err := lister.List()
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if err != nil {
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directive = cobra.ShellCompDirectiveError
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return
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}
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strings = s
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directive = cobra.ShellCompDirectiveDefault
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return
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},
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Args: cobra.ExactArgs(1),
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RunE: describe,
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PreRun: func(cmd *cobra.Command, args []string) {
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viper.BindPFlag("output", cmd.Flags().Lookup("output"))
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viper.BindPFlag("name", cmd.Flags().Lookup("name"))
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},
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}
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func describe(cmd *cobra.Command, args []string) (err error) {
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var (
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verbose = viper.GetBool("verbose")
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format = viper.GetString("output")
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name = viper.GetString("name")
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path = "" // default to current working directory
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)
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// If provided use the path as the first argument
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if len(args) == 1 {
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name = args[0]
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}
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describer, err := knative.NewDescriber(faas.DefaultNamespace)
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if err != nil {
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return
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}
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describer.Verbose = verbose
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client, err := faas.New(
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faas.WithVerbose(verbose),
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faas.WithDescriber(describer),
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)
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if err != nil {
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return
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}
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// describe the given name, or path if not provided.
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description, err := client.Describe(name, path)
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if err != nil {
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return
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}
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formatFunctions := map[string]func(interface{}) ([]byte, error){
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"json": json.Marshal,
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"yaml": yaml.Marshal,
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"xml": xml.Marshal,
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}
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formatFun, found := formatFunctions[format]
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if !found {
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return errors.New("unknown output format")
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}
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data, err := formatFun(description)
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if err != nil {
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return
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}
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fmt.Println(string(data))
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return
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}
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