public async Task AnyContractAnyLog()
{
const string QUEUE_NAME = "any-contract-any-log";
var azureQueueFactory = new AzureStorageQueueFactory(_azureConnectionString);
try
{
var queue = await azureQueueFactory.GetOrCreateQueueAsync(QUEUE_NAME);
var logProcessor = _web3.Processing.Logs.CreateProcessor(filterLog => queue.AddMessageAsync(filterLog));
//if we need to stop the processor mid execution - call cancel on the token
var cancellationTokenSource = new CancellationTokenSource();
//crawl the required block range
await logProcessor.ExecuteAsync(
toBlockNumber : 3146690,
cancellationToken : cancellationTokenSource.Token,
startAtBlockNumberIfNotProcessed : 3146684);
Assert.Equal(65, await queue.GetApproxMessageCountAsync());
}
finally
{
await azureQueueFactory.DeleteQueueAsync(QUEUE_NAME);
}
}
public async Task MappingAnEventLogToACustomQueueMessage()
{
const string QUEUE_NAME = "mapping-from-event-log";
var azureQueueFactory = new AzureStorageQueueFactory(_azureConnectionString);
try
{
var queue = await azureQueueFactory.GetOrCreateQueueAsync <EventLog <TransferEventDTO>, MessageToQueue>(
QUEUE_NAME, transferEvent => new MessageToQueue(transferEvent));
var logProcessor = _web3.Processing.Logs.CreateProcessor <TransferEventDTO>(
transferEvent => queue.AddMessageAsync(transferEvent));
//if we need to stop the processor mid execution - call cancel on the token
var cancellationTokenSource = new CancellationTokenSource();
//crawl the required block range
await logProcessor.ExecuteAsync(
toBlockNumber : 3146690,
cancellationToken : cancellationTokenSource.Token,
startAtBlockNumberIfNotProcessed : 3146684);
Assert.Equal(13, await queue.GetApproxMessageCountAsync());
}
finally
{
await azureQueueFactory.DeleteQueueAsync(QUEUE_NAME);
}
}
public async Task EventSpecificCriteria()
{
const string QUEUE_NAME = "with-event-specific-criteria";
var azureQueueFactory = new AzureStorageQueueFactory(_azureConnectionString);
try
{
var queue = await azureQueueFactory.GetOrCreateQueueAsync(QUEUE_NAME);
var minValue = BigInteger.Parse("5000000000000000000");
var logProcessor = _web3.Processing.Logs.CreateProcessor <TransferEventDTO>(
action: transferEvent => queue.AddMessageAsync(transferEvent),
criteria: transferEvent => transferEvent.Event.Value >= minValue);
//if we need to stop the processor mid execution - call cancel on the token
var cancellationTokenSource = new CancellationTokenSource();
//crawl the required block range
await logProcessor.ExecuteAsync(
toBlockNumber : 3146690,
cancellationToken : cancellationTokenSource.Token,
startAtBlockNumberIfNotProcessed : 3146684);
await Task.Delay(2000); //give time for queue to update
Assert.Equal(6, await queue.GetApproxMessageCountAsync());
}
finally
{
await azureQueueFactory.DeleteQueueAsync(QUEUE_NAME);
}
}
public async Task ManyContractsOneEvent()
{
const string QUEUE_NAME = "many-contracts-one-event";
var azureQueueFactory = new AzureStorageQueueFactory(_azureConnectionString);
try
{
var queue = await azureQueueFactory.GetOrCreateQueueAsync(QUEUE_NAME);
var contractAddresses = new[] { "0x109424946d5aa4425b2dc1934031d634cdad3f90", "0x16c45b25c4817bdedfce770f795790795c9505a6" };
var logProcessor = _web3.Processing.Logs.CreateProcessorForContracts <TransferEventDTO>(
contractAddresses,
transferEvent => queue.AddMessageAsync(transferEvent));
//if we need to stop the processor mid execution - call cancel on the token
var cancellationTokenSource = new CancellationTokenSource();
//crawl the required block range
await logProcessor.ExecuteAsync(
toBlockNumber : 3146690,
cancellationToken : cancellationTokenSource.Token,
startAtBlockNumberIfNotProcessed : 3146684);
Assert.Equal(5, await queue.GetApproxMessageCountAsync());
}
finally
{
await azureQueueFactory.DeleteQueueAsync(QUEUE_NAME);
}
}
public async Task OneContractAnyLog()
{
const string QUEUE_NAME = "one-contract-any-log";
var azureQueueFactory = new AzureStorageQueueFactory(_azureConnectionString);
try
{
var queue = await azureQueueFactory.GetOrCreateQueueAsync(QUEUE_NAME);
var contractFilter = new NewFilterInput {
Address = new[] { "0x109424946d5aa4425b2dc1934031d634cdad3f90" }
};
var logProcessor = _web3.Processing.Logs.CreateProcessor(
action: filterLog => queue.AddMessageAsync(filterLog), filter: contractFilter);
//if we need to stop the processor mid execution - call cancel on the token
var cancellationTokenSource = new CancellationTokenSource();
//crawl the required block range
await logProcessor.ExecuteAsync(
toBlockNumber : 3146690,
cancellationToken : cancellationTokenSource.Token,
startAtBlockNumberIfNotProcessed : 3146684);
Assert.Equal(4, await queue.GetApproxMessageCountAsync());
}
finally
{
await azureQueueFactory.DeleteQueueAsync(QUEUE_NAME);
}
}
public async Task ManyContractsMultipleEvents()
{
const string ERC20_QUEUE_NAME = "many-contract-multi-event-erc20";
const string APPROVAL_QUEUE_NAME = "many-contract-multi-event-approval";
var azureQueueFactory = new AzureStorageQueueFactory(_azureConnectionString);
try
{
var erc20Queue = await azureQueueFactory.GetOrCreateQueueAsync(ERC20_QUEUE_NAME);
var approvalQueue = await azureQueueFactory.GetOrCreateQueueAsync(APPROVAL_QUEUE_NAME);
var erc20TransferProcessor = new EventLogProcessorHandler <TransferEventDTO>(transfer => erc20Queue.AddMessageAsync(transfer));
var approvalProcessor = new EventLogProcessorHandler <ApprovalEventDTO>(approval => approvalQueue.AddMessageAsync(approval));
var logProcessors = new ProcessorHandler <FilterLog>[] { erc20TransferProcessor, approvalProcessor };
var contractAddresses = new[] { "0x9EDCb9A9c4d34b5d6A082c86cb4f117A1394F831", "0xafbfefa496ae205cf4e002dee11517e6d6da3ef6" };
var contractFilter = new NewFilterInput {
Address = contractAddresses
};
var logProcessor = _web3.Processing.Logs.CreateProcessor(logProcessors, filter: contractFilter);
//if we need to stop the processor mid execution - call cancel on the token
var cancellationTokenSource = new CancellationTokenSource();
//crawl the required block range
await logProcessor.ExecuteAsync(
toBlockNumber : 3621716,
cancellationToken : cancellationTokenSource.Token,
startAtBlockNumberIfNotProcessed : 3621715);
Assert.Equal(2, await erc20Queue.GetApproxMessageCountAsync());
Assert.Equal(1, await approvalQueue.GetApproxMessageCountAsync());
}
finally
{
await azureQueueFactory.DeleteQueueAsync(ERC20_QUEUE_NAME);
await azureQueueFactory.DeleteQueueAsync(APPROVAL_QUEUE_NAME);
}
}
public async Task AnyContractMultipleEvents()
{
const string ERC20_QUEUE_NAME = "any-contract-one-event-erc20";
const string ERC721_QUEUE_NAME = "any-contract-one-event-erc721";
var azureQueueFactory = new AzureStorageQueueFactory(_azureConnectionString);
try
{
var erc20Queue = await azureQueueFactory.GetOrCreateQueueAsync(ERC20_QUEUE_NAME);
var erc721Queue = await azureQueueFactory.GetOrCreateQueueAsync(ERC721_QUEUE_NAME);
var erc20TransferProcessor = new EventLogProcessorHandler <TransferEventDTO>(transfer => erc20Queue.AddMessageAsync(transfer));
var erc721TransferProcessor = new EventLogProcessorHandler <Erc721TransferEvent>(transfer => erc721Queue.AddMessageAsync(transfer));
var logProcessors = new ProcessorHandler <FilterLog>[] { erc20TransferProcessor, erc721TransferProcessor };
var logProcessor = _web3.Processing.Logs.CreateProcessor(logProcessors);
//if we need to stop the processor mid execution - call cancel on the token
var cancellationTokenSource = new CancellationTokenSource();
//crawl the required block range
await logProcessor.ExecuteAsync(
toBlockNumber : 3146690,
cancellationToken : cancellationTokenSource.Token,
startAtBlockNumberIfNotProcessed : 3146684);
Assert.Equal(13, await erc20Queue.GetApproxMessageCountAsync());
Assert.Equal(3, await erc721Queue.GetApproxMessageCountAsync());
}
finally
{
await azureQueueFactory.DeleteQueueAsync(ERC20_QUEUE_NAME);
await azureQueueFactory.DeleteQueueAsync(ERC721_QUEUE_NAME);
}
}
public async Task WebJobExample()
{
var config = TestConfiguration.LoadConfig();
string azureStorageConnectionString = config["AzureStorageConnectionString"];
string azureSearchKey = config["AzureSearchApiKey"];
var configurationContext = EventProcessingConfigMock.Create(PARTITION, out IdGenerator idGenerator);
IEventProcessingConfigurationRepository configurationRepository = configurationContext.CreateMockRepository(idGenerator);
var web3 = new Web3.Web3(TestConfiguration.BlockchainUrls.Infura.Rinkeby);
// search components
var searchService = new AzureSearchService(serviceName: AZURE_SEARCH_SERVICE_NAME, searchApiKey: azureSearchKey);
var subscriberSearchIndexFactory = new SubscriberSearchIndexFactory(async indexName =>
{
if (await searchService.IndexExistsAsync(indexName) == false)
{
//TODO: REPLACE THIS WITH Nethereum.BlockchainStore.Search.Azure.EventToGenericSearchDocMapper
await searchService.CreateIndexAsync(EventToGenericSearchDocMapper.CreateAzureIndexDefinition(indexName));
}
return(searchService.CreateIndexer <DecodedEvent, GenericSearchDocument>(
indexName, decodedEvent => EventToGenericSearchDocMapper.Map(decodedEvent, decodedEvent.State)));
});
// queue components
//AzureStorageQueueFactory
var azureQueueFactory = new AzureStorageQueueFactory(azureStorageConnectionString);
var subscriberQueueFactory = new SubscriberQueueFactory(
queueName => azureQueueFactory.GetOrCreateQueueAsync(queueName));
// subscriber repository
var repositoryFactory = new AzureTablesSubscriberRepositoryFactory(azureStorageConnectionString);
// load subscribers and event subscriptions
var eventSubscriptionFactory = new EventSubscriptionFactory(
web3, configurationRepository, subscriberQueueFactory, subscriberSearchIndexFactory, repositoryFactory);
var eventSubscriptions = await eventSubscriptionFactory.LoadAsync(PARTITION);
// progress repo (dictates which block ranges to process next)
// maintain separate progress per partition via a prefix
var storageCloudSetup = new AzureTablesRepositoryFactory(azureStorageConnectionString, prefix: $"Partition{PARTITION}");
var blockProgressRepo = storageCloudSetup.CreateBlockProgressRepository();
var logProcessor = web3.Processing.Logs.CreateProcessor(
logProcessors: eventSubscriptions, blockProgressRepository: blockProgressRepo);
// execute
try
{
var ctx = new System.Threading.CancellationTokenSource();
await logProcessor.ExecuteAsync(BLOCK_TO, ctx.Token, BLOCK_FROM);
}
finally
{
await ClearDown(configurationContext, storageCloudSetup, searchService, azureQueueFactory, repositoryFactory);
}
// save event subscription state
await configurationRepository.EventSubscriptionStates.UpsertAsync(eventSubscriptions.Select(s => s.State));
// assertions
var subscriptionState1 = configurationContext.GetEventSubscriptionState(eventSubscriptionId: 1); // interested in transfers with contract queries and aggregations
var subscriptionState2 = configurationContext.GetEventSubscriptionState(eventSubscriptionId: 2); // interested in transfers with simple aggregation
var subscriptionState3 = configurationContext.GetEventSubscriptionState(eventSubscriptionId: 3); // interested in any event for a specific address
Assert.Equal("4009000000002040652615", subscriptionState1.Values["RunningTotalForTransferValue"].ToString());
Assert.Equal((uint)19, subscriptionState2.Values["CurrentTransferCount"]);
var txForSpecificAddress = (List <string>)subscriptionState3.Values["AllTransactionHashes"];
Assert.Equal("0x362bcbc78a5cc6156e8d24d95bee6b8f53d7821083940434d2191feba477ae0e", txForSpecificAddress[0]);
Assert.Equal("0xe63e9422dedf84d0ce13f9f75ebfd86333ce917b2572925fbdd51b51caf89b77", txForSpecificAddress[1]);
var blockNumbersForSpecificAddress = (List <HexBigInteger>)subscriptionState3.Values["AllBlockNumbers"];
Assert.Equal(4063362, blockNumbersForSpecificAddress[0].Value);
Assert.Equal(4063362, blockNumbersForSpecificAddress[1].Value);
}