/// <summary>
/// Create service instances.
/// </summary>
/// <param name="instances">Create and initialize the service instances</param>
/// <param name="isRandomNumberOfPartitions">True if random number of Partitions (less than or equal to max number of partitions) per instance, false initialize max number of partitions</param>
/// <param name="numOfPartitionsPerInstance">Number of partitions per instance</param>
static void InitializeInstances(InstanceRecord[] instances, bool isRandomNumberOfPartitions, int numOfPartitionsPerInstance)
{
for (int instanceIndex = 0; instanceIndex < instances.Count(); instanceIndex++)
{
Uri instanceName = new Uri("fabric:/test/svcInstance/" + instanceIndex);
// Initialize partitions
int partitionCount = numOfPartitionsPerInstance;
if (isRandomNumberOfPartitions)
{
partitionCount = RandGen.Next(1, numOfPartitionsPerInstance);
}
instances[instanceIndex] = new InstanceRecord(instanceName, partitionCount);
}
}
public void RandomTests_ParallelSessionsProfile()
{
try
{
Utility.WrapNativeSyncInvokeInMTA(() =>
{
try
{
// Number of parallel sessions tests
const int sessionCount = 100;
// Instantiate multiple test sessions.
SessionTest[] sessionTests = new SessionTest[sessionCount];
// Number of service instances
const int instanceCount = 5;
// Instantiate the required service instances.
InstanceRecord[] instances = new InstanceRecord[instanceCount];
// Max number of partition per instance
const int maxPartitionsPerInstance = 3;
// If Partition type is int64 range, than use this to set the low value range
const int int64PartitionKeyLowValMultiplier = 10000;
// Initialize Service Instances and randomly allocate partitions for each.
InitializeInstances(instances, true, maxPartitionsPerInstance);
// Initialize Partitions and respective reliable sessions
foreach (InstanceRecord instance in instances)
{
InitializePartitions(instance, true, new PartitionKeyType(), int64PartitionKeyLowValMultiplier);
foreach (PartitionRecord partition in instance.Partitions)
{
this.InitializeReliableSessions(instance.InstanceName, partition);
}
}
// Min Segment Size to set the boundaries for random segment size
const int minSegmentSize = 100;
// Max Segment Size to set the boundaries for random segment size
const int maxSegmentSize = 499;
// Min Message count to set the boundaries for random messages per session
const int minMessageCountPerSession = 500;
// Min Message count to set the boundaries for random messages per session
const int maxMessageCountPerSession = 2500;
// Wait for send Segment Wait In MilliSeconds Per Message
const int waitPerMessage = 1000; // in milliseconds
// Dictionary of unique pairs of inbound and outbound sessions
Dictionary <string, string> checkForUniqueness = new Dictionary <string, string>();
// Initialize and Setup the session tests by randomly selecting message sizes and abort sessions.
for (int i = 0; i < sessionCount; i++)
{
// Pick a random Source Partition and Target Partition and setup the session test between them
PartitionRecord sourcePartitionRecord = GetRandomPartitionRecord(instances);
PartitionRecord targetPartitionRecord = GetRandomPartitionRecord(instances);
if (!String.Equals(sourcePartitionRecord.PartitionKey, targetPartitionRecord.PartitionKey))
{
int segmentSize = RandGen.Next(minSegmentSize, maxSegmentSize);
int messageCount = RandGen.Next(minMessageCountPerSession, maxMessageCountPerSession);
SessionTest sessionTest = new SessionTest(segmentSize, messageCount, waitPerMessage, i);
SetupSessionTest(sessionTest, sourcePartitionRecord, targetPartitionRecord);
// Check if it's an unique test session combination before adding it to the test sessions.
if (
checkForUniqueness.ContainsKey(sourcePartitionRecord.PartitionKey +
targetPartitionRecord.PartitionKey))
{
sessionTest.SkipTest = true;
}
else
{
checkForUniqueness.Add(
sourcePartitionRecord.PartitionKey + targetPartitionRecord.PartitionKey, "");
LogHelper.Log("SessionId: {0}; Unique Partitions: s: {1} t: {2}", sessionTest.SessionId, sourcePartitionRecord.PartitionKey, targetPartitionRecord.PartitionKey);
}
sessionTests[i] = sessionTest;
}
else
{
i--;
}
}
// Randomly start the tests in parallel
const int maxTestDelay = sessionCount * 10;
// Cache all run test() in an action delegate array with random delay starts
Action[] testActions = sessionTests.Select(
element =>
(element.SkipTest)
? null
: new Action(() => element.RunTest(RandGen.Next() % maxTestDelay)))
.ToArray();
// Create and start tasks for all non skipped tests
Task[] tempTestTasksToRun = testActions
.Where(element => element != null)
.Select(element => Task.Factory.StartNew(element)).ToArray();
LogHelper.Log("Total number of Tests started = {0}", tempTestTasksToRun.Count());
Task.WaitAll(tempTestTasksToRun);
LogHelper.Log("Total number of Tests {0} ran to completion.", tempTestTasksToRun.Count());
}
catch (Exception ex)
{
LogHelper.Log("Caught Exception: {0}", ex);
throw;
}
}, "MultipleParallelSessions");
}
catch (Exception e)
{
VS.Assert.IsTrue(false,
"Unexpected exception {0} during RandomTests_ParallelSessionsProfile()", e.ToString());
}
}
/// <summary>
/// Create and Initialize partitions for the given service instance .
/// </summary>
/// <param name="instance">Initialize partitions for this service instance</param>
/// <param name="isRandomPartitionType">true - if the partition type is selected randomly - String or Int64</param>
/// <param name="type">Set the partition type to this parameter, if isRandomPartitionType is false.
/// Singleton type is not allowed as we will set this type if instance partitions count = 1</param>
/// <param name="int64PartitionKeyLowValMultiplier"></param>
static void InitializePartitions(InstanceRecord instance, bool isRandomPartitionType, PartitionKeyType type, int int64PartitionKeyLowValMultiplier)
{
// Singletone is not a valid type
VS.Assert.IsTrue(type != PartitionKeyType.Singleton, "unexpected partition key type {0} in StartSessionManagersForServiceInstance", type);
// Ensure we have a valid partitions count > 0
Uri instanceName = instance.InstanceName;
int partitionCount = instance.CountOfPartitions;
VS.Assert.IsTrue(partitionCount > 0, "unexpected partitionCount {0} in StartSessionManagersForServiceInstance", partitionCount);
// singleton case
if (partitionCount == 1)
{
PartitionRecord newPartition = new PartitionRecord(
instanceName,
PartitionKeyType.Singleton,
null,
new IntegerPartitionKeyRange());
instance.Partitions[0] = newPartition;
return;
}
bool stringPartitions = false;
// randomly allocate string or int64 partition type.
if (isRandomPartitionType)
{
stringPartitions = (RandGen.Next() % 2) == 0; // decide if we have string or int64 partitions
}
else
{
if (type == PartitionKeyType.StringKey)
{
stringPartitions = true;
}
}
for (int i = 0; i < partitionCount; i++)
{
PartitionRecord newPartition;
if (stringPartitions)
{
// string partition key
string partitionKey = i.ToString(CultureInfo.InvariantCulture);
newPartition = new PartitionRecord(
instanceName,
PartitionKeyType.StringKey,
partitionKey,
new IntegerPartitionKeyRange());
instance.Partitions[i] = newPartition;
LogHelper.Log("Created; Instance: {0} StringPartition: {1}", instanceName, partitionKey);
}
// numerical partition key -- single number range
IntegerPartitionKeyRange partitionInt64Key = new IntegerPartitionKeyRange
{
IntegerKeyLow = i * int64PartitionKeyLowValMultiplier,
IntegerKeyHigh = i * int64PartitionKeyLowValMultiplier + (RandGen.Next() % (int64PartitionKeyLowValMultiplier - 1))
};
newPartition = new PartitionRecord(
instanceName,
PartitionKeyType.Int64Key,
null,
partitionInt64Key);
instance.Partitions[i] = newPartition;
LogHelper.Log("Created; Instance: {0} Int64Partition: {1}-{2}", instanceName, partitionInt64Key.IntegerKeyLow, partitionInt64Key.IntegerKeyHigh);
}
}
public static PartitionRecord GetRandomPartitionRecord(InstanceRecord[] instances)
{
InstanceRecord randomInstanceRecord = instances[RandGen.Next(instances.Count())];
return(randomInstanceRecord.Partitions[RandGen.Next(randomInstanceRecord.CountOfPartitions)]);
}
