feat: azure blob backend initial pass

cmd/versitygw/azure.go

@@ -0,0 +1,76 @@
+// Copyright 2023 Versity Software
+// This file is 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 main
+
+import (
+	"fmt"
+
+	"github.com/urfave/cli/v2"
+	"github.com/versity/versitygw/backend/azure"
+)
+
+var (
+	azAccount, azKey, azServiceURL string
+)
+
+func azureCommand() *cli.Command {
+	return &cli.Command{
+		Name:        "azure",
+		Usage:       "azure blob storage backend",
+		Description: `direct translation from s3 objects to azure blobs`,
+		Action:      runAzure,
+		Flags: []cli.Flag{
+			&cli.StringFlag{
+				Name:        "account",
+				Usage:       "azure account name",
+				EnvVars:     []string{"AZ_ACCESS_KEY"},
+				Aliases:     []string{"s"},
+				Destination: &azAccount,
+			},
+			&cli.StringFlag{
+				Name:        "secret",
+				Usage:       "azure secret key",
+				EnvVars:     []string{"AZ_SECRET_KEY"},
+				Aliases:     []string{"s"},
+				Destination: &azKey,
+			},
+			&cli.StringFlag{
+				Name:        "url",
+				Usage:       "azure service URL",
+				EnvVars:     []string{"AZ_ENDPOINT"},
+				Aliases:     []string{"u"},
+				Destination: &azServiceURL,
+			},
+		},
+	}
+}
+
+func runAzure(ctx *cli.Context) error {
+	if ctx.NArg() == 0 {
+		return fmt.Errorf("no directory provided for operation")
+	}
+
+	if azServiceURL == "" {
+		// if not otherwise specified, use the typical form: http(s)://<account>.blob.core.windows.net/
+		azServiceURL = fmt.Sprintf("https://%s.blob.core.windows.net/", azAccount)
+	}
+
+	be, err := azure.New(azAccount, azKey, azServiceURL)
+	if err != nil {
+		return fmt.Errorf("init posix: %v", err)
+	}
+
+	return runGateway(ctx.Context, be)
+}

cmd/versitygw/main.go

@@ -75,6 +75,7 @@ func main() {
 		posixCommand(),
 		scoutfsCommand(),
 		s3Command(),
+		azureCommand(),
 		adminCommand(),
 		testCommand(),
 	}