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Hedera™ Hashgraph SDK for Java
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/*-
*
* Hedera Java 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.
*
*/
package com.hedera.hashgraph.sdk;
import com.google.protobuf.ByteString;
import com.google.protobuf.InvalidProtocolBufferException;
import com.hedera.hashgraph.sdk.proto.CryptoAddLiveHashTransactionBody;
import com.hedera.hashgraph.sdk.proto.CryptoServiceGrpc;
import com.hedera.hashgraph.sdk.proto.LiveHash;
import com.hedera.hashgraph.sdk.proto.SchedulableTransactionBody;
import com.hedera.hashgraph.sdk.proto.TransactionBody;
import com.hedera.hashgraph.sdk.proto.TransactionResponse;
import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
import io.grpc.MethodDescriptor;
import org.threeten.bp.Duration;
import javax.annotation.Nullable;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.LinkedHashMap;
import java.util.Objects;
/**
* A hash---presumably of some kind of credential or certificate---along with a list of keys,
* each of which may be either a primitive or a threshold key.
*/
public final class LiveHashAddTransaction extends Transaction {
@Nullable
private AccountId accountId = null;
private byte[] hash = {};
@Nullable
private KeyList keys = null;
@Nullable
private Duration duration = null;
/**
* Constructor.
*/
public LiveHashAddTransaction() {
}
/**
* Constructor.
*
* @param txs Compound list of transaction id's list of (AccountId, Transaction)
* records
* @throws InvalidProtocolBufferException when there is an issue with the protobuf
*/
LiveHashAddTransaction(LinkedHashMap> txs) throws InvalidProtocolBufferException {
super(txs);
initFromTransactionBody();
}
/**
* Extract the account id.
*
* @return the account id
*/
@Nullable
public AccountId getAccountId() {
return accountId;
}
/**
* The account to which the livehash is attached
*
* @param accountId The AccountId to be set
* @return {@code this}
*/
public LiveHashAddTransaction setAccountId(AccountId accountId) {
Objects.requireNonNull(accountId);
requireNotFrozen();
this.accountId = accountId;
return this;
}
/**
* Extract the hash.
*
* @return the hash
*/
public ByteString getHash() {
return ByteString.copyFrom(hash);
}
/**
* The SHA-384 hash of a credential or certificate.
*
* @param hash The array of bytes to be set as the hash
* @return {@code this}
*/
public LiveHashAddTransaction setHash(byte[] hash) {
requireNotFrozen();
Objects.requireNonNull(hash);
this.hash = Arrays.copyOf(hash, hash.length);
return this;
}
/**
* The SHA-384 hash of a credential or certificate.
*
* @param hash The array of bytes to be set as the hash
* @return {@code this}
*/
public LiveHashAddTransaction setHash(ByteString hash) {
Objects.requireNonNull(hash);
return setHash(hash.toByteArray());
}
/**
* Extract the key / key list.
*
* @return the key / key list
*/
@Nullable
public Collection getKeys() {
return keys != null ? Collections.unmodifiableCollection(keys) : null;
}
/**
* A list of keys (primitive or threshold), all of which must sign to attach the livehash to an
* account, and any one of which can later delete it.
*
* @param keys The Key or Keys to be set
* @return {@code this}
*/
public LiveHashAddTransaction setKeys(Key... keys) {
requireNotFrozen();
this.keys = KeyList.of(keys);
return this;
}
/**
* Extract the duration.
*
* @return the duration
*/
@Nullable
@SuppressFBWarnings(
value = "EI_EXPOSE_REP",
justification = "A Duration can't actually be mutated"
)
public Duration getDuration() {
return duration;
}
/**
* The duration for which the livehash will remain valid
*
* @param duration The Duration to be set
* @return {@code this}
*/
@SuppressFBWarnings(
value = "EI_EXPOSE_REP2",
justification = "A Duration can't actually be mutated"
)
public LiveHashAddTransaction setDuration(Duration duration) {
requireNotFrozen();
Objects.requireNonNull(duration);
this.duration = duration;
return this;
}
/**
* Initialize from the transaction body.
*/
void initFromTransactionBody() {
var body = sourceTransactionBody.getCryptoAddLiveHash();
var hashBody = body.getLiveHash();
if (hashBody.hasAccountId()) {
accountId = AccountId.fromProtobuf(hashBody.getAccountId());
}
hash = hashBody.getHash().toByteArray();
if (hashBody.hasKeys()) {
keys = KeyList.fromProtobuf(hashBody.getKeys(), null);
}
if (hashBody.hasDuration()) {
duration = DurationConverter.fromProtobuf(hashBody.getDuration());
}
}
/**
* Build the correct transaction body.
*
* @return {@link com.hedera.hashgraph.sdk.proto.CryptoAddLiveHashTransactionBody}
*/
CryptoAddLiveHashTransactionBody.Builder build() {
var builder = CryptoAddLiveHashTransactionBody.newBuilder();
var hashBuilder = LiveHash.newBuilder();
if (accountId != null) {
hashBuilder.setAccountId(accountId.toProtobuf());
}
hashBuilder.setHash(ByteString.copyFrom(hash));
if (keys != null) {
hashBuilder.setKeys(keys.toProtobuf());
}
if (duration != null) {
hashBuilder.setDuration(DurationConverter.toProtobuf(duration));
}
return builder.setLiveHash(hashBuilder);
}
@Override
void validateChecksums(Client client) throws BadEntityIdException {
if (accountId != null) {
accountId.validateChecksum(client);
}
}
@Override
MethodDescriptor getMethodDescriptor() {
return CryptoServiceGrpc.getAddLiveHashMethod();
}
@Override
void onFreeze(TransactionBody.Builder bodyBuilder) {
bodyBuilder.setCryptoAddLiveHash(build());
}
@Override
void onScheduled(SchedulableTransactionBody.Builder scheduled) {
throw new UnsupportedOperationException("Cannot schedule LiveHashAddTransaction");
}
}
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