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Commitec0cf80

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Higher-level API to read well-known ETH events as polymorphic classes
1 parent235be0d commitec0cf80

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11 files changed

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11 files changed

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packageio.api.etherscan.core;
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importio.api.etherscan.error.ApiException;
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importio.api.etherscan.model.Log;
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importio.api.etherscan.model.event.IEvent;
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importio.api.etherscan.model.query.impl.LogQuery;
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importorg.jetbrains.annotations.NotNull;
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importjava.util.List;
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/**
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* EtherScan - API Descriptions
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* https://etherscan.io/apis#logs
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*/
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publicinterfaceIEventsApi {
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/**
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* This is a high-level alternative to the ILogsApi and an alternative to the native eth_getLogs
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* Read at EtherScan API description for full info!
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* @param query build log query
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* @return logs according to query
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* @throws ApiException parent exception class
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*
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* @see io.api.etherscan.model.query.impl.LogQueryBuilder
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*/
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@NotNull
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List<IEvent>events(LogQueryquery)throwsApiException;
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}
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packageio.api.etherscan.core.impl;
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importio.api.etherscan.core.IEventsApi;
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importio.api.etherscan.core.ILogsApi;
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importio.api.etherscan.error.ApiException;
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importio.api.etherscan.executor.IHttpExecutor;
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importio.api.etherscan.manager.IQueueManager;
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importio.api.etherscan.model.Log;
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importio.api.etherscan.model.event.IEvent;
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importio.api.etherscan.model.event.impl.Event;
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importio.api.etherscan.model.query.impl.LogQuery;
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importio.api.etherscan.model.utility.LogResponseTO;
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importio.api.etherscan.util.BasicUtils;
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importorg.jetbrains.annotations.NotNull;
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importjava.util.Collections;
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importjava.util.List;
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importjava.util.stream.Collectors;
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/**
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* Logs API Implementation
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*
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* @see IEventsApi
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*
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*/
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publicclassEventsApiProviderextendsBasicProviderimplementsIEventsApi {
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privatestaticfinalStringACT_LOGS_PARAM =ACT_PREFIX +"getLogs";
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EventsApiProvider(finalIQueueManagerqueue,
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finalStringbaseUrl,
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finalIHttpExecutorexecutor) {
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super(queue,"logs",baseUrl,executor);
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}
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@NotNull
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@Override
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publicList<IEvent>events(finalLogQueryquery)throwsApiException {
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finalStringurlParams =ACT_LOGS_PARAM +query.getParams();
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finalLogResponseTOresponse =getRequest(urlParams,LogResponseTO.class);
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BasicUtils.validateTxResponse(response);
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if (BasicUtils.isEmpty(response.getResult())) {
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returnCollections.emptyList();
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};
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returnresponse
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.getResult()
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.stream()
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.map((log) -> {
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StringeventTypeHash =log.getTopics().get(0);
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returnIEvent.createEvent(eventTypeHash,log);
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})
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.collect(Collectors.toList());
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}
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}
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packageio.api.etherscan.error;
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publicclassEventModelExceptionextendsApiException {
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publicEventModelException(Stringmessage) {
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super(message);
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}
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publicEventModelException(Stringmessage,Throwablecause) {
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super(message,cause);
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}
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}
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packageio.api.etherscan.model.event;
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importio.api.etherscan.error.ApiException;
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importio.api.etherscan.error.EventModelException;
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importio.api.etherscan.model.Log;
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importjava.util.HashMap;
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importjava.util.Map;
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publicinterfaceIEvent {
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staticfinalMap<String,Class<?>>subTypes =newHashMap<>();
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voidsetLog(Loglog);
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staticvoidregisterEventType(StringtypeHash,Class<?>clazz) {
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subTypes.put(typeHash,clazz);
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}
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staticIEventcreateEvent(StringtypeHash,Loglog) {
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if (null ==typeHash) {
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thrownewEventModelException("Event type hash cannot be null");
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}
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Class<?>clazz =subTypes.get(typeHash);
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try {
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IEventevt = (IEvent)clazz.newInstance();
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evt.setLog(log);
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returnevt;
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}catch (InstantiationException |IllegalAccessExceptionex) {
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thrownewApiException("Client-side error instantiating Event object",ex);
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}
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}
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}
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packageio.api.etherscan.model.event.impl;
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importio.api.etherscan.model.event.IEvent;
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publicclassApprovalEventextendsEvent {
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staticfinalStringeventTypeHash ="0x8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925";
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static {
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IEvent.registerEventType(ApprovalEvent.eventTypeHash,ApprovalEvent.class);
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}
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}
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packageio.api.etherscan.model.event.impl;
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importio.api.etherscan.model.event.IEvent;
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publicclassDepositEventextendsEvent {
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staticfinalStringeventTypeHash ="0xe1fffcc4923d04b559f4d29a8bfc6cda04eb5b0d3c460751c2402c5c5cc9109c";
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static {
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IEvent.registerEventType(DepositEvent.eventTypeHash,DepositEvent.class);
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}
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}
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packageio.api.etherscan.model.event.impl;
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importio.api.etherscan.error.ApiException;
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importio.api.etherscan.error.EventModelException;
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importio.api.etherscan.model.Log;
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importio.api.etherscan.model.event.IEvent;
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importjava.util.HashMap;
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importjava.util.Map;
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/**
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* Base class for a higher-level API on top of {@link Log}. Each Event class has an identifying hash
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*/
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publicclassEventimplementsIEvent {
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staticStringeventTypeHash;
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privateLoglog;
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Stringaddress;
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publicstaticStringgetEventTypeHash() {
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returneventTypeHash;
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}
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publicLoggetLog() {
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returnlog;
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}
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publicStringgetAddress() {
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returnaddress;
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}
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publicvoidsetLog(Loglog) {
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this.log =log;
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}
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publicvoidsetAddress(Stringaddress) {
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this.address =address;
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}
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}
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packageio.api.etherscan.model.event.impl;
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importio.api.etherscan.model.event.IEvent;
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publicclassMintEventextendsEvent {
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staticfinalStringeventTypeHash ="0x4c209b5fc8ad50758f13e2e1088ba56a560dff690a1c6fef26394f4c03821c4f";
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static {
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IEvent.registerEventType(MintEvent.eventTypeHash,MintEvent.class);
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}
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}
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packageio.api.etherscan.model.event.impl;
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importio.api.etherscan.model.event.IEvent;
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publicclassSyncEventextendsEvent {
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staticfinalStringeventTypeHash ="0x1c411e9a96e071241c2f21f7726b17ae89e3cab4c78be50e062b03a9fffbbad1";
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static {
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IEvent.registerEventType(SyncEvent.eventTypeHash,SyncEvent.class);
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}
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}
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packageio.api.etherscan.model.event.impl;
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importio.api.etherscan.model.event.IEvent;
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publicclassTransferErc20EventextendsEvent {
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staticfinalStringeventTypeHash ="0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef";
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static {
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IEvent.registerEventType(TransferErc20Event.eventTypeHash,TransferErc20Event.class);
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}
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StringfromAddress;
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StringtoAddress;
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publicStringgetFromAddress() {
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returnfromAddress;
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}
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publicvoidsetFromAddress(StringfromAddress) {
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this.fromAddress =fromAddress;
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}
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publicStringgetToAddress() {
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returntoAddress;
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}
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publicvoidsetToAddress(StringtoAddress) {
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this.toAddress =toAddress;
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}
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}

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