/**
 * CloudEvent Protobuf Format
 *
 * - Required context attributes are explicitly represented.
 * - Optional and Extension context attributes are carried in a map structure.
 * - Data may be represented as binary, text, or protobuf messages.
 */

 syntax = "proto3";

 package io.cloudevents.v1;
 
 import "google/protobuf/any.proto";
 import "google/protobuf/timestamp.proto";
 
 option go_package = "cloudevents.io/genproto/v1";
 option java_package = "io.cloudevents.v1.proto";
 option java_multiple_files = true;
 option php_namespace = "Io\\CloudEvents\\V1\\Proto";
 option ruby_package = "Io::CloudEvents::V1::Proto";
 
 message CloudEvent {
 
   // -- CloudEvent Context Attributes
 
   // Required Attributes
   string id = 1;
   string source = 2; // URI-reference
   string spec_version = 3;
   string type = 4;
 
   // Optional & Extension Attributes
   map<string, CloudEventAttributeValue> attributes = 5;
 
   // -- CloudEvent Data (Bytes, Text, or Proto)
   oneof  data {
     bytes binary_data = 6;
     string text_data = 7;
     google.protobuf.Any proto_data = 8;
   }
 
   /**
    * The CloudEvent specification defines
    * seven attribute value types...
    */
 
   message CloudEventAttributeValue {
 
     oneof attr {
       bool ce_boolean = 1;
       int32 ce_integer = 2;
       string ce_string = 3;
       bytes ce_bytes = 4;
       string ce_uri = 5;
       string ce_uri_ref = 6;
       google.protobuf.Timestamp ce_timestamp = 7;
     }
   }
 }