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Просмотр файла: FileCreateTransaction.js
/*-
*
* Hedera JavaScript SDK
*
* Copyright (C) 2020 - 2022 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 Hbar from "../Hbar.js";
import Transaction, {
TRANSACTION_REGISTRY,
DEFAULT_AUTO_RENEW_PERIOD,
} from "../transaction/Transaction.js";
import * as utf8 from "../encoding/utf8.js";
import Timestamp from "../Timestamp.js";
import Key from "../Key.js";
import KeyList from "../KeyList.js";
import Long from "long";
/**
* @namespace proto
* @typedef {import("@hashgraph/proto").proto.ITransaction} HashgraphProto.proto.ITransaction
* @typedef {import("@hashgraph/proto").proto.ISignedTransaction} HashgraphProto.proto.ISignedTransaction
* @typedef {import("@hashgraph/proto").proto.TransactionBody} HashgraphProto.proto.TransactionBody
* @typedef {import("@hashgraph/proto").proto.ITransactionBody} HashgraphProto.proto.ITransactionBody
* @typedef {import("@hashgraph/proto").proto.ITransactionResponse} HashgraphProto.proto.ITransactionResponse
* @typedef {import("@hashgraph/proto").proto.IFileCreateTransactionBody} HashgraphProto.proto.IFileCreateTransactionBody
*/
/**
* @typedef {import("../channel/Channel.js").default} Channel
* @typedef {import("../account/AccountId.js").default} AccountId
* @typedef {import("../transaction/TransactionId.js").default} TransactionId
*/
/**
* Create a new Hedera™ crypto-currency file.
*/
export default class FileCreateTransaction extends Transaction {
/**
* @param {object} [props]
* @param {Key[] | KeyList} [props.keys]
* @param {Timestamp | Date} [props.expirationTime]
* @param {Uint8Array | string} [props.contents]
* @param {string} [props.fileMemo]
*/
constructor(props = {}) {
super();
/**
* @private
* @type {?Key[]}
*/
this._keys = null;
/**
* @private
* @type {Timestamp}
*/
this._expirationTime = new Timestamp(0, 0).plusNanos(
Long.fromNumber(Date.now())
.mul(1000000)
.add(DEFAULT_AUTO_RENEW_PERIOD.mul(1000000000))
);
/**
* @private
* @type {?Uint8Array}
*/
this._contents = null;
/**
* @private
* @type {?string}
*/
this._fileMemo = null;
this._defaultMaxTransactionFee = new Hbar(5);
if (props.keys != null) {
this.setKeys(props.keys);
}
if (props.expirationTime != null) {
this.setExpirationTime(props.expirationTime);
}
if (props.contents != null) {
this.setContents(props.contents);
}
if (props.fileMemo != null) {
this.setFileMemo(props.fileMemo);
}
}
/**
* @internal
* @param {HashgraphProto.proto.ITransaction[]} transactions
* @param {HashgraphProto.proto.ISignedTransaction[]} signedTransactions
* @param {TransactionId[]} transactionIds
* @param {AccountId[]} nodeIds
* @param {HashgraphProto.proto.ITransactionBody[]} bodies
* @returns {FileCreateTransaction}
*/
static _fromProtobuf(
transactions,
signedTransactions,
transactionIds,
nodeIds,
bodies
) {
const body = bodies[0];
const create =
/** @type {HashgraphProto.proto.IFileCreateTransactionBody} */ (
body.fileCreate
);
return Transaction._fromProtobufTransactions(
new FileCreateTransaction({
keys:
create.keys != null
? create.keys.keys != null
? create.keys.keys.map((key) =>
Key._fromProtobufKey(key)
)
: undefined
: undefined,
expirationTime:
create.expirationTime != null
? Timestamp._fromProtobuf(create.expirationTime)
: undefined,
contents: create.contents != null ? create.contents : undefined,
fileMemo: create.memo != null ? create.memo : undefined,
}),
transactions,
signedTransactions,
transactionIds,
nodeIds,
bodies
);
}
/**
* @returns {?Key[]}
*/
get keys() {
return this._keys;
}
/**
* Set the keys which must sign any transactions modifying this file. Required.
*
* All keys must sign to modify the file's contents or keys. No key is required
* to sign for extending the expiration time (except the one for the operator account
* paying for the transaction). Only one key must sign to delete the file, however.
*
* To require more than one key to sign to delete a file, add them to a
* KeyList and pass that here.
*
* The network currently requires a file to have at least one key (or key list or threshold key)
* but this requirement may be lifted in the future.
*
* @param {Key[] | KeyList} keys
* @returns {this}
*/
setKeys(keys) {
this._requireNotFrozen();
if (keys instanceof KeyList && keys.threshold != null) {
throw new Error("Cannot set threshold key as file key");
}
this._keys = keys instanceof KeyList ? keys.toArray() : keys;
return this;
}
/**
* @returns {Timestamp}
*/
get expirationTime() {
return this._expirationTime;
}
/**
* Set the instant at which this file will expire, after which its contents will no longer be
* available.
*
* Defaults to 1/4 of a Julian year from the instant FileCreateTransaction
* was invoked.
*
* May be extended using FileUpdateTransaction#setExpirationTime(Timestamp).
*
* @param {Timestamp | Date} expirationTime
* @returns {this}
*/
setExpirationTime(expirationTime) {
this._requireNotFrozen();
this._expirationTime =
expirationTime instanceof Timestamp
? expirationTime
: Timestamp.fromDate(expirationTime);
return this;
}
/**
* @returns {?Uint8Array}
*/
get contents() {
return this._contents;
}
/**
* Set the given byte array as the file's contents.
*
* This may be omitted to create an empty file.
*
* Note that total size for a given transaction is limited to 6KiB (as of March 2020) by the
* network; if you exceed this you may receive a HederaPreCheckStatusException
* with Status#TransactionOversize.
*
* In this case, you will need to break the data into chunks of less than ~6KiB and execute this
* transaction with the first chunk and then use FileAppendTransaction with
* FileAppendTransaction#setContents(Uint8Array) for the remaining chunks.
*
* @param {Uint8Array | string} contents
* @returns {this}
*/
setContents(contents) {
this._requireNotFrozen();
this._contents =
contents instanceof Uint8Array ? contents : utf8.encode(contents);
return this;
}
/**
* @returns {?string}
*/
get fileMemo() {
return this._fileMemo;
}
/**
* @param {string} memo
* @returns {this}
*/
setFileMemo(memo) {
this._requireNotFrozen();
this._fileMemo = memo;
return this;
}
/**
* @override
* @internal
* @param {Channel} channel
* @param {HashgraphProto.proto.ITransaction} request
* @returns {Promise<HashgraphProto.proto.ITransactionResponse>}
*/
_execute(channel, request) {
return channel.file.createFile(request);
}
/**
* @override
* @protected
* @returns {NonNullable<HashgraphProto.proto.TransactionBody["data"]>}
*/
_getTransactionDataCase() {
return "fileCreate";
}
/**
* @override
* @protected
* @returns {HashgraphProto.proto.IFileCreateTransactionBody}
*/
_makeTransactionData() {
return {
keys:
this._keys != null
? {
keys: this._keys.map((key) => key._toProtobufKey()),
}
: null,
expirationTime: this._expirationTime._toProtobuf(),
contents: this._contents,
memo: this._fileMemo,
};
}
/**
* @returns {string}
*/
_getLogId() {
const timestamp = /** @type {import("../Timestamp.js").default} */ (
this._transactionIds.current.validStart
);
return `FileCreateTransaction:${timestamp.toString()}`;
}
}
// eslint-disable-next-line @typescript-eslint/unbound-method
TRANSACTION_REGISTRY.set("fileCreate", FileCreateTransaction._fromProtobuf);
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