reship events

event/proto/event.proto

@@ -8,6 +8,16 @@ import "google/protobuf/struct.proto";
 service Event {
 	rpc Publish(PublishRequest) returns (PublishResponse) {}
 	rpc Subscribe(SubscribeRequest) returns (stream SubscribeResponse) {}
+	rpc Read(ReadRequest) returns (ReadResponse) {}
+}
+
+message Ev {
+	// event id
+	string id = 1;
+	// event timestamp
+	string timestamp = 2;
+	// event message
+	google.protobuf.Struct message = 3;
 }
 
 // Publish a message to the event stream.
@@ -15,7 +25,7 @@ message PublishRequest {
 	// The topic to publish to
 	string topic = 1;
 	// The json message to publish
-	google.protobuf.Struct message = 2;
+	google.protobuf.Struct message = 4;
 }
 
 message PublishResponse {}
@@ -26,12 +36,33 @@ message SubscribeRequest {
 	string topic = 1;
 	// Optional group for the subscription
 	string group = 2;
+	// Optional offset to read from e.g "2006-01-02T15:04:05.999Z07:00"
+	string offset = 3;
 }
 
 // A blocking event will be returned in response.
 message SubscribeResponse {
 	// The topic subscribed to
 	string topic = 1;
+	// Unique message id
+	string id = 2;
+	// Timestamp of publishing
+	string timestamp = 3;
 	// The next json message on the topic
-	google.protobuf.Struct message = 2;
+	google.protobuf.Struct message = 4;
+}
+
+// Read stored events
+message ReadRequest {
+	// topic to read from
+	string topic = 1;
+	// number of events to read; default 25
+	int32 limit = 2;
+	// offset for the events; default 0
+	int32 offset = 3;
+}
+
+message ReadResponse {
+	// the events
+	repeated Ev events = 1;
 }