/// <summary>
/// Implementation of the refresh method on RBroker interface
/// /// </summary>
/// <param name="config">Pooled Broker Configuration object</param>
/// <remarks></remarks>
public new void refresh(RBrokerConfig config)
{
if (!status().isIdle)
{
throw new Exception("RBroker is not idle, refresh not permitted.");
}
if (!(config is PooledBrokerConfig))
{
throw new Exception("PooledTaskBroker refresh requires PooledBrokerConfig.");
}
PooledBrokerConfig pooledConfig = (PooledBrokerConfig)config;
try
{
/*
* Temporarily disable RBroker to permit
* configuration refresh.
*/
Interlocked.Exchange(ref m_refreshingConfig, 1);
ProjectExecutionOptions options = ROptionsTranslator.migrate(pooledConfig.poolCreationOptions);
foreach (Object resourceToken in m_resourceTokenPool)
{
RProject rProject = (RProject)resourceToken;
/*
* Recycle project to remove all existing
* workspace objects and directory files.
*/
rProject.recycle();
/*
* Execute code to cause workspace and directory
* preloads and adoptions to take place.
*/
rProject.executeCode("# Refresh project on PooledTaskBroker.", options);
}
}
catch (Exception rex)
{
throw new Exception("RBroker refresh failed with unexpected error=" + rex.ToString());
}
finally
{
/*
* Re-enabled RBroker following
* configuration refresh.
*/
Interlocked.Exchange(ref m_refreshingConfig, 0);
}
}
static public void Execute()
{
Console.WriteLine("AuthProjectExecuteCode - start");
//
// 1. Connect to the DeployR Server
//
RClient rClient = Utility.Connect();
//
// 2. Authenticate the user
//
RUser rUser = Utility.Authenticate(rClient);
//
// 3. Create a temporary project (R session).
//
// Optionally:
// ProjectCreationOptions options = new ProjectCreationOptions();
//
// Populate options as needed, then:
//
// rProject = rUser.createProject(options);
//
RProject rProject = rUser.createProject();
Console.WriteLine("AuthProjectExecuteCode: created temporary R session, rProject=" + rProject);
// 4. Execute an analytics Web service based on an arbitrary
// block of R code.
//
// Optionally:
// ProjectExecutionOptions options = new ProjectExecutionOptions();
//
// Populate options as needed, then:
//
// exec = rProject.executeCode(rCode, options);
//
String rCode = "demo(graphics)";
exec = rProject.executeCode(rCode);
Console.WriteLine("AuthProjectExecuteCode: R code execution completed, exec=" + exec);
//
// 5. Retrieve code execution results.
//
console = exec.about().console;
plots = exec.about().results;
files = exec.about().artifacts;
objects = exec.about().workspaceObjects;
//
// 6. Cleanup
//
rProject.close();
Utility.Cleanup(rUser, rClient);
Console.WriteLine("AuthProjectExecuteCode - end");
}
static public void Execute()
{
Console.WriteLine("AuthProjectWorkspace - start");
//
// 1. Connect to the DeployR Server
//
RClient rClient = Utility.Connect();
//
// 2. Authenticate the user
//
RUser rUser = Utility.Authenticate(rClient);
//
// 3. Create a temporary project (R session).
//
// Optionally:
// ProjectCreationOptions options = new ProjectCreationOptions();
//
// Populate options as needed, then:
//
// rProject = rUser.createProject(options);
//
RProject rProject = rUser.createProject();
Console.WriteLine("AuthProjectWorkspace: created temporary " +
"R session, rProject=" + rProject);
//
// 4. Execute a block of R code to create an object
// in the R session's workspace.
//
String rCode = "x <- T";
exec = rProject.executeCode(rCode);
//
// 5. Retrieve the object "x" from the R session's workspace.
//
RData encodedX = rProject.getObject("x");
if (encodedX is RBoolean)
{
Console.WriteLine("retrieved object x from workspace, x=" + (Boolean)encodedX.Value);
}
//
// 6. Create R object data in the R sesssion's workspace
// by pushing DeployR-encoded data from the client application.
//
// - Prepare sample R object vector data.
// - Use RDataFactory to encode the sample R object vector data.
// - Push encoded R object into the workspace.
//
List <Double?> vectorValues = new List <Double?>();
vectorValues.Add(10.0);
vectorValues.Add(11.1);
vectorValues.Add(12.2);
vectorValues.Add(13.3);
vectorValues.Add(14.4);
RData encodedY = RDataFactory.createNumericVector("y", vectorValues);
rProject.pushObject(encodedY);
//
// 7. Retrieve the DeployR-encoding of the R object
// from the R session's workspace.
//
encodedY = rProject.getObject("y");
if (encodedY is RNumericVector)
{
List <Double?> numVectorValues = (List <Double?>)encodedY.Value;
StringBuilder str = new StringBuilder();
foreach (Double?val in numVectorValues)
{
str.Append(val + " ");
}
Console.WriteLine("retrieved object y from workspace, encodedY=" + str.ToString());
}
//
// 8. Retrieve a list of R objects in the R session's workspace.
//
// Optionally:
// ProjectWorkspaceOptions options = new ProjectWorkspaceOptions();
//
// Populate options as needed, then:
//
// objs = rProject.listObjects(options);
//
///
objs = rProject.listObjects();
//
// 9. Cleanup
//
rProject.close();
Utility.Cleanup(rUser, rClient);
Console.WriteLine("AuthProjectWorkspace - end");
}
