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Hedera Protobuf Java API

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syntax = "proto3";

package proto;

/*-
 * ‌
 * Hedera Network Services Protobuf
 * 
 * Copyright (C) 2018 - 2020 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.
 * ‍
 */

option java_package = "com.hederahashgraph.api.proto.java";
option java_multiple_files = true;

import "BasicTypes.proto";
import "Duration.proto";
import "Timestamp.proto";

// Current state of a topic.
message ConsensusTopicInfo {
    string memo = 1; // Short publicly visible memo about the topic. No guarantee of uniqueness.

    // When a topic is created, its running hash is initialized to 48 bytes of binary zeros.
    // For each submitted message, the topic's running hash is then updated to the output
    // of a particular SHA-384 digest whose input data include the previous running hash.
    //
    // See the TransactionReceipt.proto documentation for an exact description of the
    // data included in the SHA-384 digest used for the update.
    bytes runningHash = 2;

    // Sequence number (starting at 1 for the first submitMessage) of messages on the topic.
    uint64 sequenceNumber = 3;

    // Effective consensus timestamp at (and after) which submitMessage calls will no longer succeed on the topic
    // and the topic will expire and after AUTORENEW_GRACE_PERIOD be automatically deleted.
    Timestamp expirationTime = 4;

    Key adminKey = 5; // Access control for update/delete of the topic. Null if there is no key.
    Key submitKey = 6; // Access control for ConsensusService.submitMessage. Null if there is no key.

    Duration autoRenewPeriod = 7;
    AccountID autoRenewAccount = 8; // Null if there is no autoRenewAccount.
}