add cmd/input/list to scan a plan for inputs

Signed-off-by: Tony Worm <tony@hofstadter.io>

cmd/dagger/cmd/input/list.go

@@ -0,0 +1,120 @@
+package input
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"text/tabwriter"
+
+	"dagger.io/go/cmd/dagger/cmd/common"
+	"dagger.io/go/cmd/dagger/logger"
+	"dagger.io/go/dagger"
+
+	"cuelang.org/go/cue/ast"
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+)
+
+var listCmd = &cobra.Command{
+	Use:   "list [TARGET] [flags]",
+	Short: "List for the inputs of a deployment",
+	Args:  cobra.MaximumNArgs(1),
+	PreRun: func(cmd *cobra.Command, args []string) {
+		// Fix Viper bug for duplicate flags:
+		// https://github.com/spf13/viper/issues/233
+		if err := viper.BindPFlags(cmd.Flags()); err != nil {
+			panic(err)
+		}
+	},
+	Run: func(cmd *cobra.Command, args []string) {
+		lg := logger.New()
+		ctx := lg.WithContext(cmd.Context())
+
+		store, err := dagger.DefaultStore()
+		if err != nil {
+			lg.Fatal().Err(err).Msg("failed to load store")
+		}
+
+		deployment := common.GetCurrentDeploymentState(ctx, store)
+
+		// print any persisted inputs
+		if len(deployment.Inputs) > 0 {
+			fmt.Println("Saved Inputs:")
+			for _, input := range deployment.Inputs {
+				// Todo, how to pull apart an input to print relevant information
+				fmt.Printf("%s: %v\n", input.Key, input.Value)
+			}
+			// add some space
+			fmt.Println()
+		}
+
+		lg = lg.With().
+			Str("deploymentName", deployment.Name).
+			Str("deploymentId", deployment.ID).
+			Logger()
+
+		c, err := dagger.NewClient(ctx, "", false)
+		if err != nil {
+			lg.Fatal().Err(err).Msg("unable to create client")
+		}
+
+		_, err = c.Do(ctx, deployment, func(lCtx context.Context, lDeploy *dagger.Deployment, lSolver dagger.Solver) error {
+			inputs, err := lDeploy.ScanInputs()
+			if err != nil {
+				return err
+			}
+
+			fmt.Println("Plan Inputs:")
+			w := tabwriter.NewWriter(os.Stdout, 0, 4, 2, ' ', 0)
+			fmt.Fprintln(w, "Path\tFrom\tType")
+
+			for _, val := range inputs {
+				// check for references
+				// this is here because it has issues
+				// so we wrap it in a flag to control its usage while debugging
+				_, vals := val.Expr()
+				if !viper.GetBool("keep-references") {
+					foundRef := false
+					for _, ve := range vals {
+						s := ve.Source()
+						switch s.(type) {
+						case *ast.Ident:
+							foundRef = true
+						}
+					}
+					if foundRef {
+						continue
+					}
+				}
+
+				// Construct output as a tab-table
+				// get path / pkg import (if available)
+				inst, _ := val.Reference()
+				pkg := "(plan)"
+				if inst != nil {
+					pkg = inst.ImportPath
+				}
+
+				fmt.Fprintf(w, "%s\t%s\t%v\n", val.Path(), pkg, val)
+
+			}
+			// ensure we flush the output buf
+			w.Flush()
+
+			return nil
+		})
+
+		if err != nil {
+			lg.Fatal().Err(err).Msg("failed to query deployment")
+		}
+
+	},
+}
+
+func init() {
+	listCmd.Flags().BoolP("keep-references", "R", false, "Try to eliminate references")
+
+	if err := viper.BindPFlags(listCmd.Flags()); err != nil {
+		panic(err)
+	}
+}

cmd/dagger/cmd/input/root.go

@@ -27,6 +27,7 @@ func init() {
 		textCmd,
 		jsonCmd,
 		yamlCmd,
+		listCmd,
 	)
 }