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Event support for contracts basically working
Signed-off-by: Hendrik Ebbers <hendrik.ebbers@web.de>
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‎hiero-enterprise-base/src/main/java/com/openelements/hiero/base/data/ContractLog.java‎

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@@ -1,6 +1,7 @@
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package com.openelements.hiero.base.data;
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import com.hedera.hashgraph.sdk.ContractId;
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import com.openelements.hiero.base.solidity.SolidityTools;
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import com.openelements.hiero.smartcontract.abi.model.AbiEvent;
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import java.util.List;
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import java.util.Objects;
@@ -41,6 +42,14 @@ public record ContractLog(@NonNull String address, @Nullable String bloom, @Null
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@NonNull String transactionHash,
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@Nullable Long transactionIndex) {
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public ContractLog {
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Objects.requireNonNull(address, "address must not be null");
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Objects.requireNonNull(topics, "topics must not be null");
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Objects.requireNonNull(block_hash, "block_hash must not be null");
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Objects.requireNonNull(timestamp, "timestamp must not be null");
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Objects.requireNonNull(transactionHash, "transactionHash must not be null");
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}
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public boolean isEventOfType(final @NonNull AbiEvent event) {
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Objects.requireNonNull(event, "event");
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if (event.anonymous()) {
@@ -53,4 +62,11 @@ public boolean isEventOfType(final @NonNull AbiEvent event) {
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return topics.get(0).equals(eventHashAsHex);
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}
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public ContractEventInstance asEventInstance(final @NonNull AbiEvent event) {
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Objects.requireNonNull(event, "event must not be null");
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if (!isEventOfType(event)) {
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throw new IllegalArgumentException("Event does not match log");
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}
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return SolidityTools.asEventInstance(this, event);
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}
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}

‎hiero-enterprise-base/src/test/java/com/openelements/hiero/base/test/data/ContractLogTest.java‎

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package com.openelements.hiero.base.test.data;
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import com.hedera.hashgraph.sdk.ContractId;
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import com.openelements.hiero.base.data.ContractEventInstance;
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import com.openelements.hiero.base.data.ContractLog;
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import com.openelements.hiero.smartcontract.abi.model.AbiEvent;
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import com.openelements.hiero.smartcontract.abi.model.AbiParameter;
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import com.openelements.hiero.smartcontract.abi.model.AbiParameterType;
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import java.util.List;
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import org.junit.jupiter.api.Assertions;
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import org.junit.jupiter.api.Test;
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public class ContractLogTest {
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@Test
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void test() {
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//given
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// from https://testnet.mirrornode.hedera.com/api/v1/contracts/0.0.5615061/results/logs?limit=10&order=asc
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final String address = "0x000000000000000000000000000000000055add5";
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final String bloom = "0x00000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000080000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000080000000000000000000000000000000000000000000";
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final ContractId contractId = ContractId.fromString("0.0.5615061");
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final String data = "0x0000000000000000000000000000000000000000000000000000000000000001";
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final long index = 1;
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final List<String> topics = List.of("0x271219bdbb9b91472a5df68ef7a9d3f8de02f3c27b93a35306f888acf081ea60");
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final String block_hash = "0x3c33e36ebaa60192ff6c714ec15adb3829e8dd24e0f28b607fa88f6052600fb07ab29aeeb828e3faffd85b90960cc679";
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final long blockNumber = 16076698;
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final ContractId rootContractId = ContractId.fromString("0.0.5615061");
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final String timestamp = "1740183080.776076000";
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final String transactionHash = "0x254fa8781dc4babe1df5925bc2e3e8aa50d1b57d019189116f93fbdbb5497812";
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final Long transactionIndex = 6L;
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final ContractLog contractLog = new ContractLog(address, bloom, contractId, data, index, topics, block_hash,
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blockNumber, rootContractId, timestamp, transactionHash, transactionIndex);
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final List<AbiParameter> inputs = List.of(
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new AbiParameter("count", AbiParameterType.UINT, List.of(), false)
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);
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final AbiEvent event = new AbiEvent("MissingVerificationCountUpdated", inputs, false);
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//then
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Assertions.assertTrue(contractLog.isEventOfType(event));
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}
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@Test
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void test2() {
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//given
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// from https://testnet.mirrornode.hedera.com/api/v1/contracts/0.0.5615061/results/logs?limit=10&order=asc
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final String address = "0x000000000000000000000000000000000055add5";
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final String bloom = "0x00000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000080000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000080000000000000000000000000000000000000000000";
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final ContractId contractId = ContractId.fromString("0.0.5615061");
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final String data = "0x0000000000000000000000000000000000000000000000000000000000000001";
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final long index = 1;
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final List<String> topics = List.of("0x271219bdbb9b91472a5df68ef7a9d3f8de02f3c27b93a35306f888acf081ea60");
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final String block_hash = "0x3c33e36ebaa60192ff6c714ec15adb3829e8dd24e0f28b607fa88f6052600fb07ab29aeeb828e3faffd85b90960cc679";
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final long blockNumber = 16076698;
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final ContractId rootContractId = ContractId.fromString("0.0.5615061");
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final String timestamp = "1740183080.776076000";
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final String transactionHash = "0x254fa8781dc4babe1df5925bc2e3e8aa50d1b57d019189116f93fbdbb5497812";
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final Long transactionIndex = 6L;
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final ContractLog contractLog = new ContractLog(address, bloom, contractId, data, index, topics, block_hash,
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blockNumber, rootContractId, timestamp, transactionHash, transactionIndex);
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final List<AbiParameter> inputs = List.of(
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new AbiParameter("count", AbiParameterType.UINT, List.of(), false)
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);
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final AbiEvent event = new AbiEvent("MissingVerificationCountUpdated", inputs, false);
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//when
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final ContractEventInstance eventInstance = contractLog.asEventInstance(event);
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//then
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Assertions.assertNotNull(eventInstance);
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Assertions.assertEquals(contractId, eventInstance.contractId());
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Assertions.assertEquals("MissingVerificationCountUpdated", eventInstance.eventName());
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Assertions.assertEquals(1, eventInstance.parameters().size());
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Assertions.assertEquals("count", eventInstance.parameters().get(0).name());
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Assertions.assertEquals(AbiParameterType.UINT, eventInstance.parameters().get(0).type());
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Assertions.assertArrayEquals(
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new byte[]{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x01},
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eventInstance.parameters().get(0).value());
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}
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}

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