public DataService(ITracer tracer, IPqlEngineHostProcess process, string instanceName, int maxEngineConcurrency, IDataEngineCache dataEngineCache)
{
if (tracer == null)
{
throw new ArgumentNullException("tracer");
}
if (process == null)
{
throw new ArgumentNullException("process");
}
if (string.IsNullOrEmpty(instanceName))
{
throw new ArgumentNullException("instanceName");
}
if (maxEngineConcurrency <= 0 || maxEngineConcurrency > 10000)
{
throw new ArgumentOutOfRangeException("maxEngineConcurrency", maxEngineConcurrency, "Invalid value");
}
m_protocolVersion = "default";
m_tracer = tracer;
m_cancellationTokenSource = new CancellationTokenSource();
m_process = process;
m_instanceName = instanceName;
m_maxEngineConcurrency = maxEngineConcurrency;
m_counters = new RawDataWriterPerfCounters(instanceName);
m_requestManagers = new RequestProcessingManager[maxEngineConcurrency];
// request processing managers will not be dynamically created,
// this is to explicitly limit concurrency regardless of service infrastructure settings
m_requestManagersPool = new ObjectPool<RequestProcessingManager>(m_maxEngineConcurrency, null);
for (var i = 0; i < m_requestManagersPool.Capacity; i++)
{
m_requestManagers[i] = new RequestProcessingManager(m_tracer, m_process, m_counters);
m_requestManagersPool.Return(m_requestManagers[i]);
}
m_enginesCache = dataEngineCache ?? new DataEngineCache(m_tracer, m_instanceName, m_maxEngineConcurrency);
}
public RequestProcessingManager(ITracer tracer, IPqlEngineHostProcess process, RawDataWriterPerfCounters counters)
{
if (tracer == null)
{
throw new ArgumentNullException("tracer");
}
if (process == null)
{
throw new ArgumentNullException("process");
}
if (counters == null)
{
throw new ArgumentNullException("counters");
}
m_counters = counters;
m_executionContext = new RequestExecutionContext(process, tracer);
}
public RequestProcessingManager(ITracer tracer, IPqlEngineHostProcess process, RawDataWriterPerfCounters counters)
{
if (tracer == null)
{
throw new ArgumentNullException("tracer");
}
if (process == null)
{
throw new ArgumentNullException("process");
}
if (counters == null)
{
throw new ArgumentNullException("counters");
}
m_counters = counters;
m_executionContext = new RequestExecutionContext(process, tracer);
}