Add Azure blob storage as backend

.travis.yml

@@ -2,7 +2,6 @@ language: go
 sudo: false
 
 go:
-  - 1.7.6
   - 1.8.3
   - tip
 
@@ -16,8 +15,6 @@ env:
 
 matrix:
   exclude:
-    - os: osx
-      go: 1.7.6
     - os: osx
       go: tip
     - os: linux

CHANGELOG.md

@@ -13,6 +13,14 @@ Important Changes in 0.X.Y
    vendoring the dependencies is now taken care of by `dep`.
    https://github.com/restic/restic/pull/1126
 
+ * We've added support for Microsoft Azure Blob Storage as a restic backend.
+   https://github.com/restic/restic/pull/1149
+   https://github.com/restic/restic/pull/1059
+   https://github.com/restic/restic/issues/609
+
+ * In the course of supporting Microsoft Azure Blobe Storage Go 1.8 is now a
+   requirement to build restic.
+
 Small changes
 -------------
 

build.go

@@ -302,8 +302,8 @@ func (cs Constants) LDFlags() string {
 
 func main() {
 	ver := runtime.Version()
-	if strings.HasPrefix(ver, "go1") && ver < "go1.7" {
-		fmt.Fprintf(os.Stderr, "Go version %s detected, restic requires at least Go 1.7\n", ver)
+	if strings.HasPrefix(ver, "go1") && ver < "go1.8" {
+		fmt.Fprintf(os.Stderr, "Go version %s detected, restic requires at least Go 1.8\n", ver)
 		os.Exit(1)
 	}
 

cmd/restic/global.go

@@ -10,6 +10,7 @@ import (
 	"strings"
 	"syscall"
 
+	"github.com/restic/restic/internal/backend/azure"
 	"github.com/restic/restic/internal/backend/b2"
 	"github.com/restic/restic/internal/backend/local"
 	"github.com/restic/restic/internal/backend/location"
@@ -363,6 +364,23 @@ func parseConfig(loc location.Location, opts options.Options) (interface{}, erro
 		debug.Log("opening s3 repository at %#v", cfg)
 		return cfg, nil
 
+	case "azure":
+		cfg := loc.Config.(azure.Config)
+		if cfg.AccountName == "" {
+			cfg.AccountName = os.Getenv("AZURE_ACCOUNT_NAME")
+		}
+
+		if cfg.AccountKey == "" {
+			cfg.AccountKey = os.Getenv("AZURE_ACCOUNT_KEY")
+		}
+
+		if err := opts.Apply(loc.Scheme, &cfg); err != nil {
+			return nil, err
+		}
+
+		debug.Log("opening gs repository at %#v", cfg)
+		return cfg, nil
+
 	case "swift":
 		cfg := loc.Config.(swift.Config)
 
@@ -429,6 +447,8 @@ func open(s string, opts options.Options) (restic.Backend, error) {
 		be, err = sftp.Open(cfg.(sftp.Config))
 	case "s3":
 		be, err = s3.Open(cfg.(s3.Config))
+	case "azure":
+		be, err = azure.Open(cfg.(azure.Config))
 	case "swift":
 		be, err = swift.Open(cfg.(swift.Config))
 	case "b2":
@@ -477,6 +497,8 @@ func create(s string, opts options.Options) (restic.Backend, error) {
 		return sftp.Create(cfg.(sftp.Config))
 	case "s3":
 		return s3.Create(cfg.(s3.Config))
+	case "azure":
+		return azure.Create(cfg.(azure.Config))
 	case "swift":
 		return swift.Open(cfg.(swift.Config))
 	case "b2":

doc/manual.rst

@@ -371,6 +371,33 @@ The number of concurrent connections to the B2 service can be set with the `-o
 b2.connections=10`. By default, at most five parallel connections are
 established.
 
+Microsoft Azure Blob Storage
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+You can also store backups on Microsoft Azure Blob Storage. Export the Azure
+account name and key as follows:
+
+.. code-block:: console
+
+    $ export AZURE_ACCOUNT_NAME=<ACCOUNT_NAME>
+    $ export AZURE_ACCOUNT_KEY=<SECRET_KEY>
+
+Afterwards you can initialize a repository in a container called `foo` in the
+root path like this:
+
+.. code-block:: console
+
+    $ restic -r azure:foo:/ init
+    enter password for new backend:
+    enter password again:
+
+    created restic backend a934bac191 at azure:foo:/
+    [...]
+
+The number of concurrent connections to the B2 service can be set with the
+`-o azure.connections=10`. By default, at most five parallel connections are
+established.
+
 
 Password prompt on Windows
 ~~~~~~~~~~~~~~~~~~~~~~~~~~