Add dockerhub and ghcr providers

Use a general container lister and implement sample command to test it
out

Signed-off-by: Juan Antonio Osorio <ozz@stacklok.com>

cmd/dev/app/container/cmd_verify.go

@@ -49,7 +49,9 @@ func CmdVerify() *cobra.Command {
 	verifyCmd.Flags().StringP("owner", "o", "", "owner of the artifact")
 	verifyCmd.Flags().StringP("name", "n", "", "name of the artifact")
 	verifyCmd.Flags().StringP("digest", "s", "", "digest of the artifact")
+	//nolint:goconst // let's not use a const for this one
 	verifyCmd.Flags().StringP("token", "t", "", "token to authenticate to the provider."+
+		//nolint:goconst // let's not use a const for this one
 		"Can also be set via the AUTH_TOKEN environment variable.")
 	verifyCmd.Flags().StringP("tuf-root", "r", sigstore.SigstorePublicTrustedRootRepo, "TUF root to use for verification")
 

cmd/dev/app/container/container.go

@@ -25,6 +25,8 @@ func CmdContainer() *cobra.Command {
 	}
 
 	rtCmd.AddCommand(CmdVerify())
+	rtCmd.AddCommand(CmdList())
+	rtCmd.AddCommand(CmdListTags())
 
 	return rtCmd
 }

cmd/dev/app/container/list.go

@@ -0,0 +1,92 @@
+// Copyright 2023 Stacklok, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//	http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Package container provides the root command for the container subcommands
+package container
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"strings"
+
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+
+	"github.com/stacklok/minder/internal/providers/credentials"
+	"github.com/stacklok/minder/internal/providers/dockerhub"
+	"github.com/stacklok/minder/internal/providers/github/ghcr"
+	provifv1 "github.com/stacklok/minder/pkg/providers/v1"
+)
+
+// CmdList returns the command for listing containers
+func CmdList() *cobra.Command {
+	var listCmd = &cobra.Command{
+		Use:          "list",
+		Short:        "list containers",
+		RunE:         runCmdList,
+		SilenceUsage: true,
+	}
+
+	listCmd.Flags().StringP("provider", "p", "", "provider class to use for listing containers")
+	//nolint:goconst // let's not use a const for this one
+	listCmd.Flags().StringP("token", "t", "", "token to authenticate to the provider."+
+		//nolint:goconst // let's not use a const for this one
+		"Can also be set via the AUTH_TOKEN environment variable.")
+
+	if err := viper.BindPFlag("auth.token", listCmd.Flags().Lookup("token")); err != nil {
+		fmt.Fprintf(os.Stderr, "Error binding flag: %s\n", err)
+		os.Exit(1)
+	}
+
+	viper.SetEnvKeyReplacer(strings.NewReplacer(".", "_"))
+
+	return listCmd
+}
+
+func runCmdList(cmd *cobra.Command, _ []string) error {
+	ctx := context.Background()
+
+	// get the provider
+	pclass := cmd.Flag("provider")
+
+	var prov provifv1.ImageLister
+	switch pclass.Value.String() {
+	case "dockerhub":
+		var err error
+		cred := credentials.NewOAuth2TokenCredential(viper.GetString("auth.token"))
+		prov, err = dockerhub.New(cred, "devopsfaith")
+		if err != nil {
+			return err
+		}
+	case "ghcr":
+		cred := credentials.NewOAuth2TokenCredential(viper.GetString("auth.token"))
+		prov = ghcr.New(cred, "jaormx")
+	default:
+		return fmt.Errorf("unknown provider: %s", pclass.Value.String())
+	}
+
+	// get the containers
+	containers, err := prov.ListImages(ctx)
+	if err != nil {
+		return err
+	}
+
+	// print the containers
+	for _, container := range containers {
+		fmt.Println(container)
+	}
+
+	return nil
+}

cmd/dev/app/container/list_tags.go

@@ -0,0 +1,85 @@
+// Copyright 2023 Stacklok, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//	http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Package container provides the root command for the container subcommands
+package container
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"strings"
+
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+
+	"github.com/stacklok/minder/internal/providers/credentials"
+	"github.com/stacklok/minder/internal/providers/oci"
+)
+
+// CmdListTags returns the command for listing container tags
+func CmdListTags() *cobra.Command {
+	var listCmd = &cobra.Command{
+		Use:          "list-tags",
+		Short:        "list container tags",
+		RunE:         runCmdListTags,
+		SilenceUsage: true,
+	}
+
+	listCmd.Flags().StringP("base-url", "b", "", "base URL for the OCI registry")
+	listCmd.Flags().StringP("container", "c", "", "container name to list tags for")
+	//nolint:goconst // let's not use a const for this one
+	listCmd.Flags().StringP("token", "t", "", "token to authenticate to the provider."+
+		"Can also be set via the AUTH_TOKEN environment variable.")
+
+	if err := viper.BindPFlag("auth.token", listCmd.Flags().Lookup("token")); err != nil {
+		fmt.Fprintf(os.Stderr, "Error binding flag: %s\n", err)
+		os.Exit(1)
+	}
+
+	viper.SetEnvKeyReplacer(strings.NewReplacer(".", "_"))
+
+	return listCmd
+}
+
+func runCmdListTags(cmd *cobra.Command, _ []string) error {
+	ctx := context.Background()
+
+	// get the provider
+	baseURL := cmd.Flag("base-url")
+	contname := cmd.Flag("container")
+
+	if baseURL.Value.String() == "" {
+		return fmt.Errorf("base URL is required")
+	}
+	if contname.Value.String() == "" {
+		return fmt.Errorf("container name is required")
+	}
+
+	cred := credentials.NewOAuth2TokenCredential(viper.GetString("auth.token"))
+	prov := oci.New(cred, baseURL.Value.String())
+
+	// get the containers
+	containers, err := prov.ListTags(ctx, contname.Value.String())
+	if err != nil {
+		return err
+	}
+
+	// print the containers
+	for _, container := range containers {
+		fmt.Println(container)
+	}
+
+	return nil
+}