syntax = "proto3";

package queue;

import "github.com/golang/protobuf/ptypes/timestamp/timestamp.proto";


message Message {
	// Message ID. Uniquely identifies this message, it is used for
	// auditing and troubleshooting.
	string ID = 1;

	// The envelope for this message.
	string from = 2;
	repeated string To = 3;
	repeated Recipient rcpt = 4;
	bytes data = 5;

	// Creation timestamp.
	google.protobuf.Timestamp created_at_ts = 6;

	// Hostname of the server receiving this message.
	string hostname = 7;
}

message Recipient {
	string address = 1;

	enum Type {
		EMAIL = 0;
		PIPE = 1;
	}
	Type type = 2;

	enum Status {
		PENDING = 0;
		SENT = 1;
		FAILED = 2;
	}
	Status status = 3;

	string last_failure_message = 4;
}