com.hedera.node.app.service.evm.contracts.execution.BlockMetaSource Maven / Gradle / Ivy
/*
* Copyright (C) 2022-2024 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.
*/
package com.hedera.node.app.service.evm.contracts.execution;
import org.apache.tuweni.bytes.Bytes32;
import org.hyperledger.besu.datatypes.Hash;
import org.hyperledger.besu.evm.frame.BlockValues;
/** Provides block information to a {@link HederaEvmTxProcessor}. */
public interface BlockMetaSource {
Hash UNAVAILABLE_BLOCK_HASH = org.hyperledger.besu.datatypes.Hash.wrap(Bytes32.wrap(new byte[32]));
/**
* Returns the hash of the given block number, or {@link BlockMetaSource#UNAVAILABLE_BLOCK_HASH}
* if unavailable.
*
* @param blockNo the block number of interest
* @return its hash, if available
*/
Hash getBlockHash(long blockNo);
/**
* Returns the in-scope block values, given an effective gas limit.
*
* @param gasLimit the effective gas limit
* @return the scoped block values
*/
BlockValues computeBlockValues(long gasLimit);
}