static public void Execute()
{
try {
/*
* 1. Create RBroker instance using RBrokerFactory.
*
* This example creates a DiscreteTaskBroker.
*/
DiscreteBrokerConfig brokerConfig = new DiscreteBrokerConfig(Program.DEPLOYR_ENDPOINT);
RBroker rBroker = RBrokerFactory.discreteTaskBroker(brokerConfig);
/*
* 2. Register RTaskListener for asynchronous
* notifications on RTask completion.
*/
SampleTaskBrokerListener sampleListeners = new SampleTaskBrokerListener(rBroker);
rBroker.addTaskListener(sampleListeners);
rBroker.addBrokerListener(sampleListeners);
/*
* 3. Define RTask
*
* This example creates a DiscreteTask that will
* execute an R script, /testuser/tutorial-rbroker/5SecondNoOp.
*/
RTask rTask = RTaskFactory.discreteTask(Program.TUTORIAL_NOOP_SCRIPT,
Program.TUTORIAL_REPO_DIRECTORY,
Program.TUTORIAL_REPO_OWNER,
"",
null);
/*
* 4. Submit RTask to RBroker for execution.
*
* The RTaskToken is returned immediately. You can
* use the token to track the progress of RTask
* and/or block while waiting for a result.
*
* However, in this example we are going to allow
* the RTaskListener handle the result so
* there is nothing further for us to do here after
* we submit the RTask.
*/
RTaskToken rTaskToken = rBroker.submit(rTask);
Console.WriteLine("DiscreteProfiling: submitted " + rTask +
" for execution on RBroker.");
}
catch (Exception tex)
{
Console.WriteLine("DiscreteProfiling: ex=" + tex.ToString());
}
}
static public void Execute()
{
try
{
/*
* 1. Create RBroker instance using RBrokerFactory.
*
* This example creates an anonymous DiscreteTaskBroker.
*/
DiscreteBrokerConfig brokerConfig = new DiscreteBrokerConfig(Program.DEPLOYR_ENDPOINT, null, 5);
RBroker rBroker = RBrokerFactory.discreteTaskBroker(brokerConfig);
/*
* 2. Create an instance of RTaskAppSimulator. It will drive
* RTasks through the RBroker.
*/
SampleAppSimulation simulation = new SampleAppSimulation(rBroker);
/*
* 3. Launch RTaskAppSimulator simulation.
*/
rBroker.simulateApp(simulation);
/*
* 4. Block until all tasks are complete, and shutdown has been called
*/
rBroker.waitUntilShutdown();
}
catch (Exception tex)
{
Console.WriteLine("constructor: ex=" + tex.ToString());
}
}
static public void Execute()
{
try
{
/*
* 1. Create RBroker instance using RBrokerFactory.
*
* This example creates a BackgroundTaskBroker.
*/
RAuthentication rAuth = new RBasicAuthentication(Program.AUTH_USER_NAME, Program.AUTH_PASSWORD);
BackgroundBrokerConfig brokerConfig = new BackgroundBrokerConfig(Program.DEPLOYR_ENDPOINT, rAuth);
RBroker rBroker = RBrokerFactory.backgroundTaskBroker(brokerConfig);
/*
* 2. Register RTaskListener for asynchronous
* notifications on RTask completion.
*/
BackgroundTaskListener myTaskListener = new BackgroundTaskListener(rBroker);
rBroker.addTaskListener(myTaskListener);
/*
* 3. Define RTask
*
* This example creates a BackgroundTask that will
* execute an artibrary block of R code.
*/
String rCode = "x <- rnorm(100)";
RTask rTask = RTaskFactory.backgroundTask("Example Background RTask",
"Example background RTask.",
rCode,
null);
/*
* 4. Submit RTask to RBroker for execution.
*
* The RTaskToken is returned immediately. You can
* use the token to track the progress of RTask
* and/or block while waiting for a result.
*
* However, in this example we are going to allow
* the RTaskListener handle the result so
* there is nothing further for us to do here after
* we submit the RTask.
*/
RTaskToken rTaskToken = rBroker.submit(rTask);
Console.WriteLine("Submitted " + rTask + " for execution on RBroker.");
/*
* 4. Block until all tasks are complete, and shutdown has been called
*/
rBroker.waitUntilShutdown();
}
catch (Exception tex)
{
Console.WriteLine("Runtime exception=" + tex.ToString());
}
}
static public void Execute()
{
RBroker rBroker = null;
try
{
/*
* 1. Create RBroker instance using RBrokerFactory.
*
* This example creates a DiscreteTaskBroker.
*/
DiscreteBrokerConfig brokerConfig = new DiscreteBrokerConfig(Program.DEPLOYR_ENDPOINT);
rBroker = RBrokerFactory.discreteTaskBroker(brokerConfig);
/*
* 2. Define RTask
*
* This example creates a DiscreteTask that will
* execute an R script, /testuser/tutorial-rbroker/5SecondNoOp.
*/
RTask rTask = RTaskFactory.discreteTask(Program.TUTORIAL_NOOP_SCRIPT,
Program.TUTORIAL_REPO_DIRECTORY,
Program.TUTORIAL_REPO_OWNER,
"",
null);
/*
* 3. Submit RTask to RBroker for execution.
*
* Note, unlike an RClient.executeScript call or
* an RProject.executeScript call the RBroker.submit
* call is non-blocking.
*
* The RTaskToken is returned immediately. You can
* use the token to track the progress of RTask
* and/or block while waiting for a result.
*/
RTaskToken rTaskToken = rBroker.submit(rTask);
Console.WriteLine("DiscreteBlocking: submitted " + rTask + " for execution on RBroker.");
/*
* 4. Demonstrate blocking for an RTask result.
*
* The call to getResult() will either return
* an RTaskResult or raise an Exception. An Exception
* indicates the RTask failed to complete and why.
*/
RTaskResult rTaskResult = rTaskToken.getResult();
Console.WriteLine("DiscreteBlocking: " + rTask + " completed, result=" + rTaskResult.getTimeOnCall());
} catch (Exception tex)
{
Console.WriteLine("DiscreteBlocking: error=" + tex.ToString());
}
finally
{
/*
* Final Step: Shutdown RBroker to release
* all associated resources, connections.
*/
if (rBroker != null)
{
rBroker.shutdown();
Console.WriteLine("DiscreteBlocking: rBroker has been shutdown.");
}
}
}
static public void Execute()
{
try
{
/*
* 1. Prepare PooledBrokerConfig instance.
*
* This example creates an authenticated PooledTaskBroker
* to act as our scoring engine.
*
* The following steps initialize the pool of
* R sessions dedicated to our scoring engine.
*
* In this example, we pre-initialize the workspace
* for each R session in the pool to contain the
* R model used when scoring customer requests.
*
* The R model, insurModel.rData, is loaded from
* the DeployR repository into each workspace at
* startup time. Preloading the R model at startup
* reduces runtime overhead and improves overall
* response times in the application.
*/
RAuthentication rAuth = new RBasicAuthentication(Program.AUTH_USER_NAME, Program.AUTH_PASSWORD);
PoolCreationOptions poolOptions = new PoolCreationOptions();
PoolPreloadOptions preloadOptions = new PoolPreloadOptions();
preloadOptions.filename = Program.TUTORIAL_INSURANCE_MODEL;
preloadOptions.directory = Program.TUTORIAL_REPO_DIRECTORY;
preloadOptions.author = Program.TUTORIAL_REPO_OWNER;
poolOptions.preloadWorkspace = preloadOptions;
/*
* 2. Create RBroker instance.
*
* The application designer, in conjunction with the
* DeployR administrator who provisions and sets
* limits on DeployR grid resources, need to decide how
* many R sessions will be reserved for the PooledRBroker
* used by our scoring engine application.
*/
int TARGET_POOL_SIZE = 10;
PooledBrokerConfig brokerConfig = new PooledBrokerConfig(Program.DEPLOYR_ENDPOINT,
rAuth,
TARGET_POOL_SIZE,
poolOptions);
Console.WriteLine("About to create pooledTaskBroker.");
RBroker rBroker = RBrokerFactory.pooledTaskBroker(brokerConfig);
Console.WriteLine("R session pool size, requested: " +
TARGET_POOL_SIZE + " , actual: " +
rBroker.maxConcurrency() + "\n");
/*
* 3. Create an RTaskAppSimulator. It will drive
* sample customer data scoring requests through the
* RBroker.
*/
ScoringEngineSimulation simulation = new ScoringEngineSimulation(rBroker);
/*
* 4. Launch RTaskAppSimulator simulation.
*/
rBroker.simulateApp(simulation);
/*
* 5. Block until all tasks are complete, and shutdown has been called
*/
rBroker.waitUntilShutdown();
}
catch (Exception tex)
{
Console.WriteLine("constructor: ex=" + tex.ToString());
}
}
