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syntax = "proto3";

package proto;

/*-
 * ‌
 * Hedera Network Services Protobuf
 * 
 * Copyright (C) 2018 - 2021 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";
// <<>> This comment is special code for setting PBJ Compiler java package
option java_multiple_files = true;

import "basic_types.proto";
import "timestamp.proto";
import "google/protobuf/wrappers.proto";

/**
 * Modify the metadata and/or contents of a file. If a field is not set in the transaction body, the
 * corresponding file attribute will be unchanged. This transaction must be signed by all the keys
 * in the top level of a key list (M-of-M) of the file being updated. If the keys themselves are
 * being updated, then the transaction must also be signed by all the new keys. If the keys contain
 * additional KeyList or ThresholdKey then M-of-M secondary KeyList or ThresholdKey signing
 * requirements must be meet If the update transaction sets the auto_renew_account_id field 
 * to anything other than the sentinel 0.0.0, the key of the referenced account must sign.
 */
message FileUpdateTransactionBody {
    /**
     * The ID of the file to update
     */
    FileID fileID = 1;

    /**
     * The new expiry time (ignored if not later than the current expiry)
     */
    Timestamp expirationTime = 2;

    /**
     * The new list of keys that can modify or delete the file
     */
    KeyList keys = 3;

    /**
     * The new contents that should overwrite the file's current contents
     */
    bytes contents = 4;

    /**
     * If set, the new memo to be associated with the file (UTF-8 encoding max 100 bytes)
     */
    google.protobuf.StringValue memo = 5;
}