public static async Task Run()
{
// Disable Grpc logging
GrpcEnvironment.DisableLogging();
try
{
// Create config
var config = Utilities.GetConfig();
// Create credentials
var credentials = await BigtableCredentials.UseApplicationDefaultCredentialsAsync();
// Admin client
using (var adminClient = new BigAdminClient(credentials, config))
{
// Get tables
var tables = (await adminClient.ListTablesAsync()).ToArray();
// Ensure pricing table exists
if (tables.All(t => t.Name != Constants.PricingTable))
{
// Inform user
CommandLine.InformUser("Setup", "Missing example table. Please run the Examples.Bootstrap project.");
// Hard stop
return;
}
// Show user
CommandLine.DisplayTables(tables);
}
// Wait for keypress
CommandLine.WaitForUserAndThen("scan for rows");
// Data client
using (var dataClient = new BigDataClient(credentials, config))
{
// Target
var pricingTable = new BigTable(Constants.PricingTable);
// Scan pricing table
var pricing = await dataClient.GetRowsAsync(pricingTable, Constants.ScanKeyStart, Constants.ScanKeyEnd, Constants.ScanLimit);
// Show the user
CommandLine.DisplayRows(pricing);
// Wait for keypress
CommandLine.WaitForUserAndThen("observe rows");
// Test observables
var waitSource = new CancellationTokenSource();
// ReSharper disable once MethodSupportsCancellation
var waitForObservation = Task.Run(() => Task.Delay(-1, waitSource.Token));
// Create a subscriber
var subscriber = new TestSubscriber(() => waitSource.Cancel());
// ReSharper disable once MethodSupportsCancellation
var observable = dataClient.ObserveRows(pricingTable, Constants.ScanKeyStart, Constants.ScanKeyEnd, Constants.ScanLimit);
using (observable.Subscribe(subscriber))
{
//await Task.Delay(1000);
Task.WaitAny(waitForObservation);
}
// Wait for keypress
CommandLine.WaitForUserAndThen("seek for row");
// Seek for data
var row = await dataClient.GetRowAsync(pricingTable, Constants.SeekKey);
// Show the user
CommandLine.DisplayRows(new[] { row });
}
}
catch (Exception exception)
{
CommandLine.InformUser("Oops", "Example didn't work out as planned");
CommandLine.RenderException(exception);
}
finally
{
// All done
CommandLine.WaitForUserAndThen("exit");
}
}
public static void DisableLogger()
{
GrpcEnvironment.DisableLogging();
}
public static async Task Run(BigtableConfig config)
{
GrpcEnvironment.DisableLogging();
try
{
var credentials = await BigtableCredentials.UseApplicationDefaultCredentialsAsync();
// Admin client
using (var loader = new Loader(credentials, config))
{
// Examine cluster
await loader.Initialize();
// Ensure pricing table exists
if (loader.NoExampleTables)
{
var state = "Missing example tables.";
var question = "Would you like to create and populate the example tables?";
if (!AskUserPermission(state, question))
{
return;
}
}
else if (loader.SomeExampleTables)
{
var state = "Missing some of the example tables.";
var question = "Would you like to create and populate the missing tables?";
if (!AskUserPermission(state, question))
{
return;
}
}
else
{
var state = "Example tables are present.";
var question = "Would you like to DROP, recreate, and populate the example tables?";
if (!AskUserPermission(state, question))
{
return;
}
}
await loader.LoadTables();
}
}
catch (Exception exception)
{
// Notify user
CommandLine.InformUser("Oops", "Bootstrapping did not work out as planned.");
CommandLine.RenderException(exception);
// Giveup
return;
}
finally
{
// Give user a chance to read screen
if (Debugger.IsAttached)
{
CommandLine.WaitForUserAndThen("exit");
}
}
}
public static async Task Run()
{
// Disable Grpc logging
GrpcEnvironment.DisableLogging();
try
{
// Create config
var config = Utilities.GetConfig();
// Create credentials
var credentials = await BigtableCredentials.UseApplicationDefaultCredentialsAsync();
// Mapper client
using (var bigtable = new Bigtable(credentials, config))
{
var tableExists = await bigtable.TableExists <Pricing>();
// Ensure pricing table exists
if (!tableExists)
{
// Inform user
CommandLine.InformUser("Setup", "Missing example table. Please run the Examples.Bootstrap project.");
// Hard stop
return;
}
// -----------------------------------------------------------------------------------------------------------------///
// Inform User
CommandLine.InformUser("Start", "Getting first pricing poco record");
// Seek one record
var firstPricing = await bigtable.GetFirstRowAsync <Pricing>();
// Show user
DisplayPricing(firstPricing);
// -----------------------------------------------------------------------------------------------------------------///
// Inform User
CommandLine.WaitForUserAndThen("get keyed pricing poco");
// Seek one record
var pricing = await bigtable.GetAsync(new Pricing { Id = Constants.SeekId, Date = Constants.SeekDate });
// Show user
DisplayPricing(pricing);
// -----------------------------------------------------------------------------------------------------------------///
// Inform User
CommandLine.WaitForUserAndThen("get alternate-schema pricing poco");
// Seek one record using alternate schema
var simplePricing = await bigtable.GetAsync(new SimplePricing { Id = Constants.SeekId, Date = Constants.SeekDate });
// Show user
DisplayPricing(FromSimplePricing(simplePricing));
// -----------------------------------------------------------------------------------------------------------------///
// Inform User
CommandLine.WaitForUserAndThen("scan partially-keyed pricing poco");
// Seek one record
var pricings = await bigtable.ScanAsync(new Pricing { Id = Constants.SeekId }, new Pricing { Id = Constants.SeekId + 1 });
// Show user
DisplayPricing(pricings.ToArray());
// -----------------------------------------------------------------------------------------------------------------///
// Inform User
CommandLine.WaitForUserAndThen("read write read");
// Seek one record
var rewrite = await bigtable.GetAsync(new Pricing { Id = Constants.SeekId, Date = Constants.SeekDate + 1 });
DisplayPricing(rewrite);
var tempHigh = rewrite.High;
var tempLow = rewrite.Low;
rewrite.High = 142;
rewrite.Low = null;
await bigtable.UpdateAsync(rewrite);
var rewriteRead = await bigtable.GetAsync(new Pricing { Id = Constants.SeekId, Date = Constants.SeekDate + 1 });
DisplayPricing(rewrite, rewriteRead);
rewrite.High = tempHigh;
rewrite.Low = tempLow;
await bigtable.UpdateAsync(rewrite);
}
}
catch (Exception exception)
{
CommandLine.InformUser("Oops", "Example didn't work out as planned");
CommandLine.RenderException(exception);
}
finally
{
// All done
CommandLine.WaitForUserAndThen("exit");
}
}
public static async Task Run()
{
// Disable Grpc logging
GrpcEnvironment.DisableLogging();
// Locals
var client = default(SimpleClient);
try
{
// Get examples config
var config = Utilities.GetConfig();
// Create a Native .Net BigTable Client
client = new SimpleClient(config);
// Connect to the Googles
await client.Connect();
// Get a list of table names
var tableNames = client.GetTableNames().Result;
// Ensure pricing table exists
if (!tableNames.Value.Contains(Constants.PricingTable))
{
// Inform user
CommandLine.InformUser("Setup", "Missing example table. Please run the Examples.Bootstrap project.");
// Hard stop
return;
}
// Show the user
DisplayTables(tableNames);
// Wait for keypress
CommandLine.WaitForUserAndThen("scan for rows");
// Scan for data
var rows = client.Scan(Constants.PricingTable, Constants.ScanKeyStart, Constants.ScanKeyEnd).Result;
// Show the user
DisplayRows(rows);
// Wait for keypress
CommandLine.WaitForUserAndThen("seek for row");
// Seek for data
var row = client.Seek(Constants.PricingTable, Constants.SeekKey).Result;
// Show the user
DisplayRows(row);
}
catch (Exception exception)
{
CommandLine.InformUser("Oops", "Example didn't work out as planned");
CommandLine.RenderException(exception);
}
finally
{
// Pretty
Console.WriteLine();
// Dispose
if (client != default(SimpleClient))
{
client.Dispose();
}
// All done
CommandLine.WaitForUserAndThen("exit");
}
}
