public async Task TestPutSingleRecordBatch()
{
var flightDescriptor = FlightDescriptor.CreatePathDescriptor("test");
var expectedBatch = CreateTestBatch(0, 100);
var putStream = _flightClient.StartPut(flightDescriptor);
await putStream.RequestStream.WriteAsync(expectedBatch);
await putStream.RequestStream.CompleteAsync();
var putResults = await putStream.ResponseStream.ToListAsync();
Assert.Single(putResults);
var actualBatches = GetStoreBatch(flightDescriptor);
Assert.Single(actualBatches);
ArrowReaderVerifier.CompareBatches(expectedBatch, actualBatches.First().RecordBatch);
}
public static async Task Main(string[] args)
{
string host = args.Length > 0 ? args[0] : "localhost";
string port = args.Length > 1 ? args[1] : "5000";
// Create client
// (In production systems, you should use https not http)
var address = $"http://{host}:{port}";
Console.WriteLine($"Connecting to: {address}");
var channel = GrpcChannel.ForAddress(address);
var client = new FlightClient(channel);
var recordBatches = new RecordBatch[] {
CreateTestBatch(0, 2000), CreateTestBatch(50, 9000)
};
// Particular flights are identified by a descriptor. This might be a name,
// a SQL query, or a path. Here, just using the name "test".
var descriptor = FlightDescriptor.CreateCommandDescriptor("test");
// Upload data with StartPut
var batchStreamingCall = client.StartPut(descriptor);
foreach (var batch in recordBatches)
{
await batchStreamingCall.RequestStream.WriteAsync(batch);
}
// Signal we are done sending record batches
await batchStreamingCall.RequestStream.CompleteAsync();
// Retrieve final response
await batchStreamingCall.ResponseStream.MoveNext();
Console.WriteLine(batchStreamingCall.ResponseStream.Current.ApplicationMetadata.ToStringUtf8());
Console.WriteLine($"Wrote {recordBatches.Length} batches to server.");
// Request information:
var schema = await client.GetSchema(descriptor).ResponseAsync;
Console.WriteLine($"Schema saved as: \n {schema}");
var info = await client.GetInfo(descriptor).ResponseAsync;
Console.WriteLine($"Info provided: \n {info}");
Console.WriteLine($"Available flights:");
var flights_call = client.ListFlights();
while (await flights_call.ResponseStream.MoveNext())
{
Console.WriteLine(" " + flights_call.ResponseStream.Current.ToString());
}
// Download data
await foreach (var batch in StreamRecordBatches(info))
{
Console.WriteLine($"Read batch from flight server: \n {batch}");
}
// See available comands on this server
var action_stream = client.ListActions();
Console.WriteLine("Actions:");
while (await action_stream.ResponseStream.MoveNext())
{
var action = action_stream.ResponseStream.Current;
Console.WriteLine($" {action.Type}: {action.Description}");
}
// Send clear command to drop all data from the server.
var clear_result = client.DoAction(new FlightAction("clear"));
await clear_result.ResponseStream.MoveNext(default);