Add rclone mounter (#15)

pkg/s3/mounter_rclone.go

@@ -0,0 +1,60 @@
+package s3
+
+import (
+	"fmt"
+	"os"
+)
+
+// Implements Mounter
+type rcloneMounter struct {
+	bucket          *bucket
+	url             string
+	region          string
+	accessKeyID     string
+	secretAccessKey string
+}
+
+const (
+	rcloneCmd = "rclone"
+)
+
+func newRcloneMounter(b *bucket, cfg *Config) (Mounter, error) {
+	return &rcloneMounter{
+		bucket:          b,
+		url:             cfg.Endpoint,
+		region:          cfg.Region,
+		accessKeyID:     cfg.AccessKeyID,
+		secretAccessKey: cfg.SecretAccessKey,
+	}, nil
+}
+
+func (rclone *rcloneMounter) Stage(stageTarget string) error {
+	return nil
+}
+
+func (rclone *rcloneMounter) Unstage(stageTarget string) error {
+	return nil
+}
+
+func (rclone *rcloneMounter) Mount(source string, target string) error {
+	args := []string{
+		"mount",
+		fmt.Sprintf(":s3:%s/%s", rclone.bucket.Name, rclone.bucket.FSPath),
+		fmt.Sprintf("%s", target),
+		"--daemon",
+		"--s3-provider=AWS",
+		"--s3-env-auth=true",
+		fmt.Sprintf("--s3-region=%s", rclone.region),
+		fmt.Sprintf("--s3-endpoint=%s", rclone.url),
+		"--allow-other",
+		// TODO: make this configurable
+		"--vfs-cache-mode=writes",
+	}
+	os.Setenv("AWS_ACCESS_KEY_ID", rclone.accessKeyID)
+	os.Setenv("AWS_SECRET_ACCESS_KEY", rclone.secretAccessKey)
+	return fuseMount(target, rcloneCmd, args)
+}
+
+func (rclone *rcloneMounter) Unmount(target string) error {
+	return fuseUnmount(target, rcloneCmd)
+}