firewalldb: put Action DB methods behind an interface

So that we can easily add a different implementation and swop them out
later.

firewalldb/actions.go

@@ -230,7 +230,7 @@ func (db *BoltDB) GetActionsReadDB(groupID session.ID,
 
 // allActionsReadDb is an implementation of the ActionsReadDB.
 type allActionsReadDB struct {
-	db          *BoltDB
+	db          ActionDB
 	groupID     session.ID
 	featureName string
 }

firewalldb/interface.go

@@ -100,3 +100,27 @@ type PrivacyMapper interface {
 	// given group ID key.
 	PrivacyDB(groupID session.ID) PrivacyMapDB
 }
+
+// ActionDB is an interface that abstracts the database operations needed for
+// the Action persistence and querying.
+type ActionDB interface {
+	// AddAction persists the given action to the database.
+	AddAction(action *Action) (uint64, error)
+
+	// SetActionState finds the action specified by the ActionLocator and
+	// sets its state to the given state.
+	SetActionState(al *ActionLocator, state ActionState,
+		errReason string) error
+
+	// ListActions returns a list of Actions that pass the filterFn
+	// requirements. The query IndexOffset and MaxNum params can be used to
+	// control the number of actions returned. The return values are the
+	// list of actions, the last index and the total count (iff
+	// query.CountTotal is set).
+	ListActions(ctx context.Context, query *ListActionsQuery,
+		options ...ListActionOption) ([]*Action, uint64, uint64, error)
+
+	// GetActionsReadDB produces an ActionReadDB using the given group ID
+	// and feature name.
+	GetActionsReadDB(groupID session.ID, featureName string) ActionsReadDB
+}

session_rpcserver.go

@@ -63,7 +63,7 @@ type sessionRpcServerConfig struct {
 	superMacBaker           litmac.Baker
 	firstConnectionDeadline time.Duration
 	permMgr                 *perms.Manager
-	actionsDB               *firewalldb.BoltDB
+	actionsDB               firewalldb.ActionDB
 	autopilot               autopilotserver.Autopilot
 	ruleMgrs                rules.ManagerSet
 	privMap                 firewalldb.PrivacyMapper