generalize trigger kinds

daemon/job/trigger/from_config.go

@@ -0,0 +1,30 @@
+package trigger
+
+import (
+	"fmt"
+
+	"github.com/zrepl/zrepl/config"
+)
+
+func FromConfig(in []*config.ReplicationTriggerEnum) (*Triggers, error) {
+	triggers := make([]Trigger, len(in))
+	for i, e := range in {
+		var t Trigger = nil
+		switch te := e.Ret.(type) {
+		case *config.ReplicationTriggerManual:
+			// not a trigger
+			t = NewManual("manual")
+		case *config.ReplicationTriggerPeriodic:
+			t = NewPeriodic(te.Interval.Duration())
+		case *config.ReplicationTriggerCron:
+			t = NewCron(te.Cron.Schedule)
+		default:
+			return nil, fmt.Errorf("unknown trigger type %T", te)
+		}
+		triggers[i] = t
+	}
+	return &Triggers{
+		spawned:  false,
+		triggers: triggers,
+	}, nil
+}