Add command aptly db recover.

cmd/db.go

@@ -10,6 +10,7 @@ func makeCmdDb() *commander.Command {
 		Short:     "manage aptly's internal database and package pool",
 		Subcommands: []*commander.Command{
 			makeCmdDbCleanup(),
+			makeCmdDbRecover(),
 		},
 	}
 }

cmd/db_recover.go

@@ -0,0 +1,39 @@
+package cmd
+
+import (
+	"github.com/smira/aptly/database"
+	"github.com/smira/commander"
+)
+
+// aptly db recover
+func aptlyDbRecover(cmd *commander.Command, args []string) error {
+	var err error
+
+	if len(args) != 0 {
+		cmd.Usage()
+		return err
+	}
+
+	context.Progress().Printf("Recovering database...\n")
+	err = database.RecoverDB(context.DBPath())
+
+	return err
+}
+
+func makeCmdDbRecover() *commander.Command {
+	cmd := &commander.Command{
+		Run:       aptlyDbRecover,
+		UsageLine: "recover",
+		Short:     "recover DB after crash",
+		Long: `
+Database recover does its best to recover database after crash.
+It is recommended to backup DB before running recover.
+
+Example:
+
+  $ aptly db recover
+`,
+	}
+
+	return cmd
+}