Merge pull request #356 from MUzairS15/events

Add constructs for `Meshery Events`.

go.mod

@@ -133,6 +133,7 @@ require (
 	github.com/go-openapi/jsonreference v0.20.1 // indirect
 	github.com/go-openapi/swag v0.22.3 // indirect
 	github.com/gobwas/glob v0.2.3 // indirect
+	github.com/gofrs/uuid v4.4.0+incompatible
 	github.com/gogo/protobuf v1.3.2 // indirect
 	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
 	github.com/golang/protobuf v1.5.3 // indirect

go.sum

@@ -551,6 +551,8 @@ github.com/gofrs/flock v0.8.1 h1:+gYjHKf32LDeiEEFhQaotPbLuUXjY5ZqxKgXy7n59aw=
 github.com/gofrs/flock v0.8.1/go.mod h1:F1TvTiK9OcQqauNUHlbJvyl9Qa1QvF/gOUDKA14jxHU=
 github.com/gofrs/uuid v3.3.0+incompatible/go.mod h1:b2aQJv3Z4Fp6yNu3cdSllBxTCLRxnplIgP/c0N/04lM=
 github.com/gofrs/uuid v4.0.0+incompatible h1:1SD/1F5pU8p29ybwgQSwpQk+mwdRrXCYuPhW6m+TnJw=
+github.com/gofrs/uuid v4.4.0+incompatible h1:3qXRTX8/NbyulANqlc0lchS1gqAVxRgsuW1YrTJupqA=
+github.com/gofrs/uuid v4.4.0+incompatible/go.mod h1:b2aQJv3Z4Fp6yNu3cdSllBxTCLRxnplIgP/c0N/04lM=
 github.com/gogo/googleapis v1.2.0/go.mod h1:Njal3psf3qN6dwBtQfUmBZh2ybovJ0tlu3o/AC7HYjU=
 github.com/gogo/googleapis v1.4.0 h1:zgVt4UpGxcqVOw97aRGxT4svlcmdK35fynLNctY32zI=
 github.com/gogo/googleapis v1.4.0/go.mod h1:5YRNX2z1oM5gXdAkurHa942MDgEJyk02w4OecKY87+c=

models/events/build.go

@@ -0,0 +1,65 @@
+package events
+
+import (
+	"time"
+
+	"github.com/gofrs/uuid"
+)
+
+type EventBuilder struct {
+	event Event
+}
+
+func NewEvent() *EventBuilder {
+	operationId, _ := uuid.NewV4()
+	return &EventBuilder{
+		event: Event{
+			CreatedAt:   time.Now(),
+			OperationID: operationId,
+		},
+	}
+}
+
+func (e *EventBuilder) ActedUpon(resource uuid.UUID) *EventBuilder {
+	e.event.ActedUpon = resource
+	return e
+}
+
+func (e *EventBuilder) WithDescription(description string) *EventBuilder {
+	e.event.Description = description
+	return e
+}
+
+func (e *EventBuilder) WithCategory(eventCategory string) *EventBuilder {
+	e.event.Category = eventCategory
+	return e
+}
+
+func (e *EventBuilder) WithAction(eventAction string) *EventBuilder {
+	e.event.Action = eventAction
+	return e
+}
+
+func (e *EventBuilder) WithMetadata(metadata interface{}) *EventBuilder {
+	e.event.Metadata = metadata
+	return e
+}
+
+func (e *EventBuilder) WithSeverity(severity EventSeverity) *EventBuilder {
+	e.event.Severity = severity
+	return e
+}
+
+func (e *EventBuilder) FromUser(id uuid.UUID) *EventBuilder {
+	e.event.UserID = &id
+	return e
+}
+
+func (e *EventBuilder) FromSystem(id uuid.UUID) *EventBuilder {
+	e.event.SystemID = id
+	return e
+}
+
+func (e *EventBuilder) Build() *Event {
+	return &e.event
+}