public async Task StoringCustomSearchDocuments_UsingMapper()
{
using (var processor =
new AzureEventIndexingProcessor(AzureSearchServiceName, _azureSearchApiKey, BlockchainUrl))
{
await ClearDown(processor);
//create an azure index definition based on a custom Dto
//the processor will create the index if it does not already exist
var index = CreateAzureIndexDefinition();
var mapper = new CustomEventToSearchDocumentMapper();
try
{
//inject a mapping func to translate our event to a doc to store in the index
await processor.AddAsync <TransferEvent_ERC20, CustomTransferSearchDocumentDto>(index, mapper);
var blocksProcessed = await processor.ProcessAsync(3146684, 3146694);
Assert.Equal((ulong)11, blocksProcessed);
Assert.Equal(1, processor.Indexers.Count);
Assert.Equal(19, processor.Indexers[0].Indexed);
}
finally
{
await ClearDown(processor);
}
}
}
public async Task IndexingAdditionalInformationPerEvent()
{
using (var processor =
new AzureEventIndexingProcessor(AzureSearchServiceName, _azureSearchApiKey, BlockchainUrl))
{
await ClearDown(processor);
try
{
var transferEventProcessor = await processor.AddAsync <TransferEvent_Extended>(AzureTransferIndexName);
await processor.ProcessAsync(3146684, 3146694);
await Task.Delay(5000); // leave time for index
var customIndexer = transferEventProcessor.Indexer as IAzureIndex;
var searchByMachineNameQuery = Environment.MachineName;
var searchResult = await customIndexer.SearchAsync(searchByMachineNameQuery);
Assert.Equal(19, searchResult.Count);
//all should have our custom metadata which is not provided by the blockchain
foreach (var result in searchResult.Results)
{
var indexedOnTimestamp = result.Document["metadata_indexedon"];
Assert.NotNull(indexedOnTimestamp);
}
}
finally
{
await ClearDown(processor);
}
}
}
public async Task WithAFilter()
{
var filter = new FilterInputBuilder <TransferEvent_ERC20>()
.AddTopic(tfr => tfr.To, "0xdfa70b70b41d77a7cdd8b878f57521d47c064d8c")
.Build(contractAddress: "0x3678FbEFC663FC28336b93A1FA397B67ae42114d",
blockRange: new BlockRange(3860820, 3860820));
using (var processor =
new AzureEventIndexingProcessor(
AzureSearchServiceName,
_azureSearchApiKey,
BlockchainUrl,
filters: new[] { filter }))
{
await ClearDown(processor);
try
{
await processor.AddAsync <TransferEvent_ERC20>(AzureTransferIndexName);
var blocksProcessed = await processor.ProcessAsync(3860820, 3860820);
Assert.Equal((ulong)1, blocksProcessed);
Assert.Equal(1, processor.Indexers[0].Indexed);
}
finally
{
await ClearDown(processor);
}
}
}
public async Task IndexTransferEventAndFunction()
{
using (var processor =
new AzureEventIndexingProcessor(AzureSearchServiceName, _azureSearchApiKey, BlockchainUrl))
{
await ClearDown(processor);
try
{
//reusable function handler which incorporates a function indexer
//the function indexer won't do anything yet
//it must be linked to an event processor before functions are indexed
var transferFunctionHandler =
await processor.CreateFunctionHandlerAsync <TransferFunction>(TransferFunctionIndexName);
//reusable function handler which incorporates a function indexer
//the function indexer won't do anything yet
//it must be linked to an event processor before functions are indexed
var transferFromFunctionHandler =
await processor.CreateFunctionHandlerAsync <TransferFromFunction>(TransferFromFunctionIndexName);
//create an indexer for the transfer event
//link our function handlers so that functions related to the event are indexed
await processor.AddAsync <TransferEvent_ERC20>(TransferEventIndexName, new ITransactionHandler[]
{
transferFunctionHandler, transferFromFunctionHandler
});
//process the range
await processor.ProcessAsync(3900007, 3900030);
//allow time for azure indexing to finish
await Task.Delay(TimeSpan.FromSeconds(5));
//ensure we have written to the expected indexes
long transferEventCount = await processor.SearchService.CountDocumentsAsync(TransferEventIndexName);
long transferFunctionCount =
await processor.SearchService.CountDocumentsAsync(TransferFunctionIndexName);
long transferFromFunctionCount =
await processor.SearchService.CountDocumentsAsync(TransferFromFunctionIndexName);
Assert.Equal(32, transferEventCount);
Assert.Equal(1, transferFunctionCount);
Assert.Equal(3, transferFromFunctionCount);
}
finally
{
await ClearDown(processor);
}
}
}
public async Task IndexingTransferEventsWithDifferingSignatures()
{
using (var processor =
new AzureEventIndexingProcessor(AzureSearchServiceName, _azureSearchApiKey, BlockchainUrl))
{
await ClearDown(processor);
try
{
await processor.AddAsync <TransferEvent_With3Indexes>(AzureTransferIndexName);
await processor.AddAsync <TransferEvent_ERC20>(AzureTransferIndexName);
var blocksProcessed = await processor.ProcessAsync(3146684, 3146694);
Assert.Equal((ulong)11, blocksProcessed);
Assert.Equal(2, processor.Indexers.Count);
Assert.Equal(6, processor.Indexers[0].Indexed);
Assert.Equal(19, processor.Indexers[1].Indexed);
await Task.Delay(5000); // leave time for index
var customIndexer = processor.Indexers[0] as IIndexer;
var erc20Indexer = processor.Indexers[1] as IIndexer;
//the indexers wrap the same underlying azure index
//this azure index should have documents for both transfer event types
Assert.Equal(25, await erc20Indexer.DocumentCountAsync());
Assert.Equal(25, await customIndexer.DocumentCountAsync());
}
finally
{
await ClearDown(processor);
}
}
}
public async Task RunContinually()
{
var web3 = new Web3.Web3(BlockchainUrl);
var currentBlockNumber = (ulong)(await web3.Eth.Blocks.GetBlockNumber.SendRequestAsync()).Value;
var startingBlock = currentBlockNumber - 9;
var maxBlock = currentBlockNumber;
const ulong expectedBlocks = 10;
using (var processor =
new AzureEventIndexingProcessor(
AzureSearchServiceName, _azureSearchApiKey, BlockchainUrl, maxBlocksPerBatch: 1, minBlockConfirmations: 0))
{
await ClearDown(processor);
try
{
await processor.AddAsync <TransferEvent_ERC20>(AzureTransferIndexName);
var cancellationToken = new CancellationTokenSource();
var shortCircuit = new Action <LogBatchProcessedArgs>((args) =>
{
if (args.LastRangeProcessed.To.Value >= maxBlock) // escape hatch!
{
cancellationToken.Cancel();
}
});
var blocksProcessed = await processor.ProcessAsync(startingBlock,
ctx : cancellationToken, logBatchProcessedCallback : shortCircuit);
Assert.Equal(expectedBlocks, blocksProcessed);
}
finally
{
await ClearDown(processor);
}
}
}
public async Task StoringCustomSearchDocuments_UsingMapping()
{
using (var processor =
new AzureEventIndexingProcessor(AzureSearchServiceName, _azureSearchApiKey, BlockchainUrl))
{
await ClearDown(processor);
//create an azure index definition based on a custom Dto
//the processor will create the index if it does not already exist
Index index = CreateAzureIndexDefinition();
try
{
//inject a mapping func to translate our event to a doc to store in the index
await processor.AddAsync <TransferEvent_ERC20, CustomTransferSearchDocumentDto>(index, (e) =>
new CustomTransferSearchDocumentDto
{
From = e.Event.From,
To = e.Event.To,
Value = e.Event.Value.ToString(),
BlockNumber = e.Log.BlockNumber.Value.ToString(),
TxHash = e.Log.TransactionHash,
LogAddress = e.Log.Address,
LogIndex = (int)e.Log.LogIndex.Value,
DocumentKey = $"{e.Log.TransactionHash}_{e.Log.LogIndex.Value}"
});
var blocksProcessed = await processor.ProcessAsync(3146684, 3146694);
Assert.Equal((ulong)11, blocksProcessed);
Assert.Equal(1, processor.Indexers.Count);
Assert.Equal(19, processor.Indexers[0].Indexed);
}
finally
{
await ClearDown(processor);
}
}
}
public async Task StartHere()
{
using (var processor =
new AzureEventIndexingProcessor(AzureSearchServiceName, _azureSearchApiKey, BlockchainUrl))
{
await ClearDown(processor);
try
{
var transferEventProcessor = await processor.AddAsync <TransferEvent_ERC20>(AzureTransferIndexName);
var blocksProcessed = await processor.ProcessAsync(3146684, 3146694);
Assert.Equal((ulong)11, blocksProcessed);
Assert.Equal(19, transferEventProcessor.Indexer.Indexed);
}
finally
{
await ClearDown(processor);
}
}
}
public async Task StoringCustomSearchDocuments()
{
using (var processor =
new AzureEventIndexingProcessor(AzureSearchServiceName, _azureSearchApiKey, BlockchainUrl))
{
await ClearDown(processor);
try
{
//define our azure index for transfer function data
var transferFunctionIndex = new Index
{
Name = TransferFunctionIndexName,
Fields =
new List <Field>
{
new Field("TransactionHash", DataType.String)
{
IsKey = true, IsSearchable = true
},
new Field("BlockNumber", DataType.String)
{
IsSearchable = true
},
new Field("BlockTimestamp", DataType.String),
new Field("To", DataType.String),
new Field("Value", DataType.String)
}
};
//define azure index for transfer event data
var transferEventIndex = new Index
{
Name = TransferEventIndexName,
Fields = new List <Field>
{
new Field("DocumentKey", DataType.String)
{
IsKey = true
},
new Field("From", DataType.String)
{
IsSearchable = true, IsFacetable = true
},
new Field("To", DataType.String)
{
IsSearchable = true, IsFacetable = true
},
new Field("Value", DataType.String)
}
};
//reusable function handler which incorporates a function indexer
//the function indexer won't do anything yet
//it must be linked to an event processor before functions are indexed
var transferFunctionHandler =
await processor
.CreateFunctionHandlerAsync <TransferFunction, CustomTransferFunctionSearchDocument>(
transferFunctionIndex, (tx) => new CustomTransferFunctionSearchDocument
{
TransactionHash = tx.Tx.TransactionHash,
BlockNumber = tx.Tx.BlockNumber.Value.ToString(),
BlockTimestamp = tx.Tx.BlockTimestamp.ToString(),
To = tx.Dto.To,
Value = tx.Dto.Value.ToString()
});
//create an indexer for the transfer event
//link our function handlers so that functions related to the event are indexed
await processor.AddAsync <TransferEvent_ERC20, CustomTransferEventSearchDocument>(
transferEventIndex, (eventLog) => new CustomTransferEventSearchDocument
{
From = eventLog.Event.From,
To = eventLog.Event.To,
Value = eventLog.Event.Value.ToString(),
DocumentKey = $"{eventLog.Log.TransactionHash}_{eventLog.Log.LogIndex.Value}"
}
, new ITransactionHandler[]
{
transferFunctionHandler
});
//process the range
await processor.ProcessAsync(3146684, 3146694);
//allow time for azure indexing to finish
await Task.Delay(TimeSpan.FromSeconds(5));
//ensure we have written to the expected indexes
long transferEventCount = await processor.SearchService.CountDocumentsAsync(TransferEventIndexName);
long transferFunctionCount =
await processor.SearchService.CountDocumentsAsync(TransferFunctionIndexName);
Assert.Equal(19, transferEventCount);
Assert.Equal(2, transferFunctionCount);
}
finally
{
await ClearDown(processor);
}
}
}