Add basic Save and Get operations to the event store

management/server/event/event.go

@@ -11,25 +11,45 @@ const (
 
 type Type string
 
-// Sink provides an interface to store or stream events.
-type Sink interface {
-	// Add an event to the sink.
-	Add(event *Event) error
+// Store provides an interface to store or stream events.
+type Store interface {
+	// Save an event in the store
+	Save(event Event) (*Event, error)
+	// GetSince returns a list of events from the store for a given account since the specified time
+	GetSince(accountID string, from time.Time) ([]Event, error)
+	// GetLast returns a top N of events from the store for a given account (ordered by timestamp desc)
+	GetLast(accountID string, limit int) ([]Event, error)
 	// Close the sink flushing events if necessary
 	Close() error
 }
 
-// Event represents a network activity event.
+// Event represents a network/system activity event.
 type Event struct {
 	// Timestamp of the event
 	Timestamp time.Time
-	// Message of the event
-	Message string
+	// Operation that was performed during the event
+	Operation string
 	// ID of the event (can be empty, meaning that it wasn't yet generated)
 	ID uint64
 	// Type of the event
 	Type Type
-
-	//
-
+	// ModifierID is the ID of an object that modifies a Target
+	ModifierID string
+	// TargetID is the ID of an object that a Modifier modifies
+	TargetID string
+	// AccountID where event happened
+	AccountID string
+}
+
+// Copy the event
+func (e *Event) Copy() *Event {
+	return &Event{
+		Timestamp:  e.Timestamp,
+		Operation:  e.Operation,
+		ID:         e.ID,
+		Type:       e.Type,
+		ModifierID: e.ModifierID,
+		TargetID:   e.TargetID,
+		AccountID:  e.AccountID,
+	}
 }