Java Code Examples for org.web3j.abi.EventEncoder#encode()
The following examples show how to use
org.web3j.abi.EventEncoder#encode() .
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Example 1
Source File: Contract.java From client-sdk-java with Apache License 2.0 | 7 votes |
public static EventValues staticExtractEventParameters( Event event, Log log) { List<String> topics = log.getTopics(); String encodedEventSignature = EventEncoder.encode(event); if (topics == null || topics.size() == 0 || !topics.get(0).equals(encodedEventSignature)) { return null; } List<Type> indexedValues = new ArrayList<>(); List<Type> nonIndexedValues = FunctionReturnDecoder.decode( log.getData(), event.getNonIndexedParameters()); List<TypeReference<Type>> indexedParameters = event.getIndexedParameters(); for (int i = 0; i < indexedParameters.size(); i++) { Type value = FunctionReturnDecoder.decodeIndexedValue( topics.get(i + 1), indexedParameters.get(i)); indexedValues.add(value); } return new EventValues(indexedValues, nonIndexedValues); }
Example 2
Source File: Contract.java From etherscan-explorer with GNU General Public License v3.0 | 6 votes |
public static EventValues staticExtractEventParameters( Event event, Log log) { List<String> topics = log.getTopics(); String encodedEventSignature = EventEncoder.encode(event); if (!topics.get(0).equals(encodedEventSignature)) { return null; } List<Type> indexedValues = new ArrayList<>(); List<Type> nonIndexedValues = FunctionReturnDecoder.decode( log.getData(), event.getNonIndexedParameters()); List<TypeReference<Type>> indexedParameters = event.getIndexedParameters(); for (int i = 0; i < indexedParameters.size(); i++) { Type value = FunctionReturnDecoder.decodeIndexedValue( topics.get(i + 1), indexedParameters.get(i)); indexedValues.add(value); } return new EventValues(indexedValues, nonIndexedValues); }
Example 3
Source File: Contract.java From web3j with Apache License 2.0 | 6 votes |
public static EventValues staticExtractEventParameters(Event event, Log log) { final List<String> topics = log.getTopics(); String encodedEventSignature = EventEncoder.encode(event); if (topics == null || topics.size() == 0 || !topics.get(0).equals(encodedEventSignature)) { return null; } List<Type> indexedValues = new ArrayList<>(); List<Type> nonIndexedValues = FunctionReturnDecoder.decode(log.getData(), event.getNonIndexedParameters()); List<TypeReference<Type>> indexedParameters = event.getIndexedParameters(); for (int i = 0; i < indexedParameters.size(); i++) { Type value = FunctionReturnDecoder.decodeIndexedValue( topics.get(i + 1), indexedParameters.get(i)); indexedValues.add(value); } return new EventValues(indexedValues, nonIndexedValues); }
Example 4
Source File: HumanStandardTokenIT.java From etherscan-explorer with GNU General Public License v3.0 | 5 votes |
private void sendTransferTokensTransaction( Credentials credentials, String to, String contractAddress, BigInteger qty) throws Exception { Function function = transfer(to, qty); String functionHash = execute(credentials, function, contractAddress); TransactionReceipt transferTransactionReceipt = waitForTransactionReceipt(functionHash); assertThat(transferTransactionReceipt.getTransactionHash(), is(functionHash)); List<Log> logs = transferTransactionReceipt.getLogs(); assertFalse(logs.isEmpty()); Log log = logs.get(0); // verify the event was called with the function parameters List<String> topics = log.getTopics(); assertThat(topics.size(), is(3)); Event transferEvent = transferEvent(); // check function signature - we only have a single topic our event signature, // there are no indexed parameters in this example String encodedEventSignature = EventEncoder.encode(transferEvent); assertThat(topics.get(0), is(encodedEventSignature)); assertThat(new Address(topics.get(1)), is(new Address(credentials.getAddress()))); assertThat(new Address(topics.get(2)), is(new Address(to))); // verify qty transferred List<Type> results = FunctionReturnDecoder.decode( log.getData(), transferEvent.getNonIndexedParameters()); assertThat(results, equalTo(Collections.singletonList(new Uint256(qty)))); }
Example 5
Source File: HumanStandardTokenIT.java From etherscan-explorer with GNU General Public License v3.0 | 5 votes |
private void sendApproveTransaction( Credentials credentials, String spender, BigInteger value, String contractAddress) throws Exception { Function function = approve(spender, value); String functionHash = execute(credentials, function, contractAddress); TransactionReceipt transferTransactionReceipt = waitForTransactionReceipt(functionHash); assertThat(transferTransactionReceipt.getTransactionHash(), is(functionHash)); List<Log> logs = transferTransactionReceipt.getLogs(); assertFalse(logs.isEmpty()); Log log = logs.get(0); // verify the event was called with the function parameters List<String> topics = log.getTopics(); assertThat(topics.size(), is(3)); // event Transfer(address indexed _from, address indexed _to, uint256 _value); Event event = approvalEvent(); // check function signature - we only have a single topic our event signature, // there are no indexed parameters in this example String encodedEventSignature = EventEncoder.encode(event); assertThat(topics.get(0), is(encodedEventSignature)); assertThat(new Address(topics.get(1)), is(new Address(credentials.getAddress()))); assertThat(new Address(topics.get(2)), is(new Address(spender))); // verify our two event parameters List<Type> results = FunctionReturnDecoder.decode( log.getData(), event.getNonIndexedParameters()); assertThat(results, equalTo(Collections.singletonList(new Uint256(value)))); }
Example 6
Source File: HumanStandardTokenIT.java From etherscan-explorer with GNU General Public License v3.0 | 5 votes |
public void sendTransferFromTransaction( Credentials credentials, String from, String to, BigInteger value, String contractAddress) throws Exception { Function function = transferFrom(from, to, value); String functionHash = execute(credentials, function, contractAddress); TransactionReceipt transferTransactionReceipt = waitForTransactionReceipt(functionHash); assertThat(transferTransactionReceipt.getTransactionHash(), is(functionHash)); List<Log> logs = transferTransactionReceipt.getLogs(); assertFalse(logs.isEmpty()); Log log = logs.get(0); Event transferEvent = transferEvent(); List<String> topics = log.getTopics(); // check function signature - we only have a single topic our event signature, // there are no indexed parameters in this example String encodedEventSignature = EventEncoder.encode(transferEvent); assertThat(topics.get(0), is(encodedEventSignature)); assertThat(new Address(topics.get(1)), is(new Address(from))); assertThat(new Address(topics.get(2)), is(new Address(to))); // verify qty transferred List<Type> results = FunctionReturnDecoder.decode( log.getData(), transferEvent.getNonIndexedParameters()); assertThat(results, equalTo(Collections.singletonList(new Uint256(value)))); }
Example 7
Source File: TestnetConfig.java From etherscan-explorer with GNU General Public License v3.0 | 5 votes |
@Override public String encodedEvent() { Event event = new Event("Notify", Collections.singletonList(new TypeReference<Uint>() {}), Collections.singletonList(new TypeReference<Uint>() {})); return EventEncoder.encode(event); }
Example 8
Source File: Web3jUtil.java From eventeum with Apache License 2.0 | 5 votes |
public static String getSignature(ContractEventSpecification spec) { final List<ParameterDefinition> allParameterDefinitions = new ArrayList<>(); addAllDefinitions(allParameterDefinitions, spec.getIndexedParameterDefinitions()); addAllDefinitions(allParameterDefinitions, spec.getNonIndexedParameterDefinitions()); Collections.sort(allParameterDefinitions); final Event event = new Event(spec.getEventName(), getTypeReferencesFromParameterDefinitions(allParameterDefinitions)); return EventEncoder.encode(event); }
Example 9
Source File: HumanStandardTokenIT.java From web3j with Apache License 2.0 | 5 votes |
private void sendTransferTokensTransaction( Credentials credentials, String to, String contractAddress, BigInteger qty) throws Exception { Function function = transfer(to, qty); String functionHash = execute(credentials, function, contractAddress); TransactionReceipt transferTransactionReceipt = waitForTransactionReceipt(functionHash); assertEquals(transferTransactionReceipt.getTransactionHash(), (functionHash)); List<Log> logs = transferTransactionReceipt.getLogs(); assertFalse(logs.isEmpty()); Log log = logs.get(0); // verify the event was called with the function parameters List<String> topics = log.getTopics(); assertEquals(topics.size(), (3)); Event transferEvent = transferEvent(); // check function signature - we only have a single topic our event signature, // there are no indexed parameters in this example String encodedEventSignature = EventEncoder.encode(transferEvent); assertEquals(topics.get(0), (encodedEventSignature)); assertEquals(new Address(topics.get(1)), (new Address(credentials.getAddress()))); assertEquals(new Address(topics.get(2)), (new Address(to))); // verify qty transferred List<Type> results = FunctionReturnDecoder.decode( log.getData(), transferEvent.getNonIndexedParameters()); assertEquals(results, (Collections.singletonList(new Uint256(qty)))); }
Example 10
Source File: HumanStandardTokenIT.java From web3j with Apache License 2.0 | 5 votes |
private void sendApproveTransaction( Credentials credentials, String spender, BigInteger value, String contractAddress) throws Exception { Function function = approve(spender, value); String functionHash = execute(credentials, function, contractAddress); TransactionReceipt transferTransactionReceipt = waitForTransactionReceipt(functionHash); assertEquals(transferTransactionReceipt.getTransactionHash(), (functionHash)); List<Log> logs = transferTransactionReceipt.getLogs(); assertFalse(logs.isEmpty()); Log log = logs.get(0); // verify the event was called with the function parameters List<String> topics = log.getTopics(); assertEquals(topics.size(), (3)); // event Transfer(address indexed _from, address indexed _to, uint256 _value); Event event = approvalEvent(); // check function signature - we only have a single topic our event signature, // there are no indexed parameters in this example String encodedEventSignature = EventEncoder.encode(event); assertEquals(topics.get(0), (encodedEventSignature)); assertEquals(new Address(topics.get(1)), (new Address(credentials.getAddress()))); assertEquals(new Address(topics.get(2)), (new Address(spender))); // verify our two event parameters List<Type> results = FunctionReturnDecoder.decode(log.getData(), event.getNonIndexedParameters()); assertEquals(results, (Collections.singletonList(new Uint256(value)))); }
Example 11
Source File: HumanStandardTokenIT.java From web3j with Apache License 2.0 | 5 votes |
public void sendTransferFromTransaction( Credentials credentials, String from, String to, BigInteger value, String contractAddress) throws Exception { Function function = transferFrom(from, to, value); String functionHash = execute(credentials, function, contractAddress); TransactionReceipt transferTransactionReceipt = waitForTransactionReceipt(functionHash); assertEquals(transferTransactionReceipt.getTransactionHash(), (functionHash)); List<Log> logs = transferTransactionReceipt.getLogs(); assertFalse(logs.isEmpty()); Log log = logs.get(0); Event transferEvent = transferEvent(); List<String> topics = log.getTopics(); // check function signature - we only have a single topic our event signature, // there are no indexed parameters in this example String encodedEventSignature = EventEncoder.encode(transferEvent); assertEquals(topics.get(0), (encodedEventSignature)); assertEquals(new Address(topics.get(1)), (new Address(from))); assertEquals(new Address(topics.get(2)), (new Address(to))); // verify qty transferred List<Type> results = FunctionReturnDecoder.decode( log.getData(), transferEvent.getNonIndexedParameters()); assertEquals(results, (Collections.singletonList(new Uint256(value)))); }
Example 12
Source File: TestnetConfig.java From web3j with Apache License 2.0 | 5 votes |
@Override public String encodedEvent() { Event event = new Event( "Notify", Arrays.asList( new TypeReference<Uint>(true) {}, new TypeReference<Uint>() {})); return EventEncoder.encode(event); }
Example 13
Source File: EventFilterIT.java From etherscan-explorer with GNU General Public License v3.0 | 4 votes |
@Test public void testEventFilter() throws Exception { unlockAccount(); Function function = createFibonacciFunction(); String encodedFunction = FunctionEncoder.encode(function); BigInteger gas = estimateGas(encodedFunction); String transactionHash = sendTransaction(ALICE, CONTRACT_ADDRESS, gas, encodedFunction); TransactionReceipt transactionReceipt = waitForTransactionReceipt(transactionHash); assertFalse("Transaction execution ran out of gas", gas.equals(transactionReceipt.getGasUsed())); List<Log> logs = transactionReceipt.getLogs(); assertFalse(logs.isEmpty()); Log log = logs.get(0); List<String> topics = log.getTopics(); assertThat(topics.size(), is(1)); Event event = new Event("Notify", Collections.emptyList(), Arrays.asList(new TypeReference<Uint256>() {}, new TypeReference<Uint256>() {})); // check function signature - we only have a single topic our event signature, // there are no indexed parameters in this example String encodedEventSignature = EventEncoder.encode(event); assertThat(topics.get(0), is(encodedEventSignature)); // verify our two event parameters List<Type> results = FunctionReturnDecoder.decode( log.getData(), event.getNonIndexedParameters()); assertThat(results, equalTo(Arrays.asList( new Uint256(BigInteger.valueOf(7)), new Uint256(BigInteger.valueOf(13))))); // finally check it shows up in the event filter List<EthLog.LogResult> filterLogs = createFilterForEvent( encodedEventSignature, CONTRACT_ADDRESS); assertFalse(filterLogs.isEmpty()); }
Example 14
Source File: EventFilterIT.java From web3j with Apache License 2.0 | 4 votes |
@Test public void testEventFilter() throws Exception { unlockAccount(); Function function = createFibonacciFunction(); String encodedFunction = FunctionEncoder.encode(function); BigInteger gas = estimateGas(encodedFunction); String transactionHash = sendTransaction(ALICE, CONTRACT_ADDRESS, gas, encodedFunction); TransactionReceipt transactionReceipt = waitForTransactionReceipt(transactionHash); assertFalse(gas.equals(transactionReceipt.getGasUsed())); List<Log> logs = transactionReceipt.getLogs(); assertFalse(logs.isEmpty()); Log log = logs.get(0); List<String> topics = log.getTopics(); assertEquals(topics.size(), (1)); Event event = new Event( "Notify", Arrays.asList( new TypeReference<Uint256>() {}, new TypeReference<Uint256>() {})); // check function signature - we only have a single topic our event signature, // there are no indexed parameters in this example String encodedEventSignature = EventEncoder.encode(event); assertEquals(topics.get(0), (encodedEventSignature)); // verify our two event parameters List<Type> results = FunctionReturnDecoder.decode(log.getData(), event.getNonIndexedParameters()); assertEquals( results, (Arrays.asList( new Uint256(BigInteger.valueOf(7)), new Uint256(BigInteger.valueOf(13))))); // finally check it shows up in the event filter List<EthLog.LogResult> filterLogs = createFilterForEvent(encodedEventSignature, CONTRACT_ADDRESS); assertFalse(filterLogs.isEmpty()); }