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• event_transaction.proto

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event.event_transaction.proto Maven / Gradle / Ivy

/**
 * # Event Transaction
 * An Event Transaction gossiped between nodes as part of events.
 *
 * ### Keywords
 * The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
 * "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
 * document are to be interpreted as described in
 * [RFC2119](https://www.ietf.org/rfc/rfc2119) and clarified in
 * [RFC8174](https://www.ietf.org/rfc/rfc8174).
 */
syntax = "proto3";

package com.hedera.hapi.platform.event;

/*
 * Copyright (C) 2024 Hedera Hashgraph, LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import "event/state_signature_transaction.proto";

option java_package = "com.hedera.hapi.platform.event.legacy";
// <<>> This comment is special code for setting PBJ Compiler java package
option java_multiple_files = true;

/**
 * An Event Transaction gossiped between nodes as part of events.
 *
 * Each node MUST extract this transaction and process according to the type
 * of transaction encoded.

 * Both the platform and the application built on that platform MAY define event
 * transactions.

 * The encoded data MUST be a serialized protobuf message.
 */
message EventTransaction {
  oneof transaction {
      /**
       * An application transaction.
       * 

       * The contents of this transaction SHALL be defined by the application
       * subsystem that created the event.

       * The contents MUST be a serialized protobuf message.
       */
      bytes application_transaction = 1;
      /**
       * A state signature.
       * 

       * This transaction SHALL be a valid state signature for a state snapshot.
       */
      StateSignatureTransaction state_signature_transaction = 2;
  }

}