/// <summary>
/// This method updates child views and clears the batch of events.
/// </summary>
protected void SendBatch()
{
// If there are child views and the batch was filled, fireStatementStopped update method
if (child != null) {
// Convert to object arrays
EventBean[] newData = null;
EventBean[] oldData = null;
if (!currentBatch.IsEmpty()) {
newData = currentBatch.ToArray();
}
if (lastBatch != null && !lastBatch.IsEmpty()) {
oldData = lastBatch.ToArray();
}
// update view buffer to serve expressions require access to events held
viewUpdatedCollection?.Update(newData, oldData);
// Post new data (current batch) and old data (prior batch)
if (newData != null || oldData != null) {
agentInstanceContext.InstrumentationProvider.QViewIndicate(
lengthBatchViewFactory,
newData,
oldData);
child.Update(newData, oldData);
agentInstanceContext.InstrumentationProvider.AViewIndicate();
}
}
lastBatch = currentBatch;
currentBatch = new ArrayDeque<EventBean>();
}
/// <summary>Adds event to the time window for the specified timestamp. </summary>
/// <param name="timestamp">the time slot for the event</param>
/// <param name="bean">event to add</param>
public void Add(long timestamp, EventBean bean)
{
// Empty window
if (_window.IsEmpty())
{
var pairX = new TimeWindowPair(timestamp, bean);
_window.Add(pairX);
if (_reverseIndex != null)
{
_reverseIndex[bean] = pairX;
}
_size = 1;
return;
}
TimeWindowPair lastPair = _window.Last;
// Windows last timestamp matches the one supplied
if (lastPair.Timestamp == timestamp)
{
if (lastPair.EventHolder is IList <EventBean> )
{
var list = (IList <EventBean>)lastPair.EventHolder;
list.Add(bean);
}
else if (lastPair.EventHolder == null)
{
lastPair.EventHolder = bean;
}
else
{
var existing = (EventBean)lastPair.EventHolder;
IList <EventBean> list = new List <EventBean>(4);
list.Add(existing);
list.Add(bean);
lastPair.EventHolder = list;
}
if (_reverseIndex != null)
{
_reverseIndex[bean] = lastPair;
}
_size++;
return;
}
// Append to window
var pair = new TimeWindowPair(timestamp, bean);
if (_reverseIndex != null)
{
_reverseIndex[bean] = pair;
}
_window.Add(pair);
_size++;
}
/// <summary>
/// This method updates child views and clears the batch of events.
/// We schedule a new callback at this time if there were events in the batch.
/// </summary>
public void SendBatch()
{
_isCallbackScheduled = false;
// If there are child views and the batch was filled, fireStatementStopped update method
if (HasViews)
{
// Convert to object arrays
EventBean[] newData = null;
EventBean[] oldData = null;
if (!_currentBatch.IsEmpty())
{
newData = _currentBatch.ToArray();
}
if ((_lastBatch != null) && (!_lastBatch.IsEmpty()))
{
oldData = _lastBatch.ToArray();
}
// Post new data (current batch) and old data (prior batch)
if (_viewUpdatedCollection != null)
{
_viewUpdatedCollection.Update(newData, oldData);
}
if ((newData != null) || (oldData != null) || _isForceOutput)
{
if (InstrumentationHelper.ENABLED)
{
InstrumentationHelper.Get().QViewIndicate(this, _timeBatchViewFactory.ViewName, newData, oldData);
}
UpdateChildren(newData, oldData);
if (InstrumentationHelper.ENABLED)
{
InstrumentationHelper.Get().AViewIndicate();
}
}
}
// Only if forceOutput is enabled or
// there have been any events in this or the last interval do we schedule a callback,
// such as to not waste resources when no events arrive.
if ((!_currentBatch.IsEmpty()) || ((_lastBatch != null) && (!_lastBatch.IsEmpty()))
||
_isForceOutput)
{
ScheduleCallback();
_isCallbackScheduled = true;
}
_lastBatch = _currentBatch;
_currentBatch = new ArrayDeque <EventBean>();
}
public override void Update(EventBean[] newData, EventBean[] oldData)
{
if (InstrumentationHelper.ENABLED)
{
InstrumentationHelper.Get().QViewProcessIRStream(this, _timeBatchViewFactory.ViewName, newData, oldData);
}
// we don't care about removed data from a prior view
if ((newData == null) || (newData.Length == 0))
{
if (InstrumentationHelper.ENABLED)
{
InstrumentationHelper.Get().AViewProcessIRStream();
}
return;
}
// If we have an empty window about to be filled for the first time, schedule a callback
if (_currentBatch.IsEmpty())
{
if (_currentReferencePoint == null)
{
_currentReferencePoint = _initialReferencePoint;
if (_currentReferencePoint == null)
{
_currentReferencePoint = _agentInstanceContext.StatementContext.SchedulingService.Time;
}
}
// Schedule the next callback if there is none currently scheduled
if (!_isCallbackScheduled)
{
ScheduleCallback();
_isCallbackScheduled = true;
}
}
// add data points to the timeWindow
foreach (EventBean newEvent in newData)
{
_currentBatch.Add(newEvent);
}
// We do not update child views, since we batch the events.
if (InstrumentationHelper.ENABLED)
{
InstrumentationHelper.Get().AViewProcessIRStream();
}
}
/// <summary>
/// Flatten the vector of arrays to an array. Return null if an empty vector was passed, else
/// return an array containing all the events.
/// </summary>
/// <param name="eventVector">vector</param>
/// <returns>array with all events</returns>
public static EventBean[] Flatten(ArrayDeque<EventBean[]> eventVector)
{
if (eventVector.IsEmpty()) {
return null;
}
if (eventVector.Count == 1) {
return eventVector.First;
}
var totalElements = 0;
foreach (var arr in eventVector) {
if (arr != null) {
totalElements += arr.Length;
}
}
if (totalElements == 0) {
return null;
}
var result = new EventBean[totalElements];
var destPos = 0;
foreach (var arr in eventVector) {
if (arr != null) {
Array.Copy(arr, 0, result, destPos, arr.Length);
destPos += arr.Length;
}
}
return result;
}
public static ICollection<EventBean> GetDistinctByProp(
ArrayDeque<EventBean> events,
EventPropertyValueGetter getter)
{
if (events == null || events.IsEmpty()) {
return new EventBean[0];
}
if (events.Count < 2) {
return events;
}
var map = new LinkedHashMap<object, EventBean>();
if (events.First is NaturalEventBean) {
foreach (var theEvent in events) {
var inner = ((NaturalEventBean) theEvent).OptionalSynthetic;
var key = getter.Get(inner);
map[key] = inner;
}
}
else {
foreach (var theEvent in events) {
var key = getter.Get(theEvent);
map[key] = theEvent;
}
}
return map.Values.ToArray();
}
public static EventBean[] GetNewDataNonRemoved(
EventBean[] newData,
ISet<EventBean> removedEvents)
{
var filter = false;
for (var i = 0; i < newData.Length; i++) {
if (removedEvents.Contains(newData[i])) {
filter = true;
}
}
if (!filter) {
return newData;
}
if (newData.Length == 1) {
return null;
}
var events = new ArrayDeque<EventBean>(newData.Length - 1);
for (var i = 0; i < newData.Length; i++) {
if (!removedEvents.Contains(newData[i])) {
events.Add(newData[i]);
}
}
if (events.IsEmpty()) {
return null;
}
return events.ToArray();
}
public static EventBean[] GetNewDataNonRemoved(
EventBean[] newData,
ISet<EventBean> removedEvents,
EventBean[][] newEventsPerView)
{
if (newData == null || newData.Length == 0) {
return null;
}
if (newData.Length == 1) {
if (removedEvents.Contains(newData[0])) {
return null;
}
var pass = FindEvent(newData[0], newEventsPerView);
return pass ? newData : null;
}
var events = new ArrayDeque<EventBean>(newData.Length - 1);
for (var i = 0; i < newData.Length; i++) {
if (!removedEvents.Contains(newData[i])) {
var pass = FindEvent(newData[i], newEventsPerView);
if (pass) {
events.Add(newData[i]);
}
}
}
if (events.IsEmpty()) {
return null;
}
return events.ToArray();
}
/// <summary>
/// NOTE: Code-generation-invoked method, method name and parameter order matters
/// </summary>
/// <param name="arrays">values</param>
/// <returns>array</returns>
public static EventBean[][] ToArrayEventsArray(ArrayDeque<EventBean[]> arrays)
{
if (arrays.IsEmpty()) {
return EVENTBEANARRAYARRAY_EMPTY;
}
return arrays.ToArray();
}
/// <summary>Add to the current node building up the tree path information.</summary>
/// <param name="remainingParameters">any remaining parameters</param>
/// <param name="filterCallback">the filter callback</param>
/// <param name="currentNode">is the node to add to</param>
/// <param name="lockFactory">the lock factory</param>
private static void AddToNode(
ArrayDeque<FilterValueSetParam> remainingParameters,
FilterHandle filterCallback,
FilterHandleSetNode currentNode,
FilterServiceGranularLockFactory lockFactory)
{
// If no parameters are specified, add to current node, and done
if (remainingParameters.IsEmpty()) {
using (currentNode.NodeRWLock.WriteLock.Acquire())
{
currentNode.Add(filterCallback);
}
return;
}
// Need to find an existing index that matches one of the filter parameters
Pair<FilterValueSetParam, FilterParamIndexBase> pair;
using (currentNode.NodeRWLock.ReadLock.Acquire())
{
pair = IndexHelper.FindIndex(remainingParameters, currentNode.Indizes);
// Found an index matching a filter parameter
if (pair != null)
{
remainingParameters.Remove(pair.First);
var filterForValue = pair.First.FilterForValue;
var index = pair.Second;
AddToIndex(remainingParameters, filterCallback, index, filterForValue, lockFactory);
return;
}
}
// An index for any of the filter parameters was not found, create one
using (currentNode.NodeRWLock.WriteLock.Acquire())
{
pair = IndexHelper.FindIndex(remainingParameters, currentNode.Indizes);
// Attempt to find an index again this time under a write lock
if (pair != null)
{
remainingParameters.Remove(pair.First);
var filterForValue = pair.First.FilterForValue;
var indexInner = pair.Second;
AddToIndex(remainingParameters, filterCallback, indexInner, filterForValue, lockFactory);
return;
}
// No index found that matches any parameters, create a new one
// Pick the next parameter for an index
var parameterPickedForIndex = remainingParameters.RemoveFirst();
var index = IndexFactory.CreateIndex(parameterPickedForIndex.Lookupable, lockFactory, parameterPickedForIndex.FilterOperator);
currentNode.Add(index);
AddToIndex(remainingParameters, filterCallback, index, parameterPickedForIndex.FilterForValue, lockFactory);
}
}
public override void Update(
EventBean[] newData,
EventBean[] oldData)
{
AgentInstanceContext agentInstanceContext = agentInstanceViewFactoryContext.AgentInstanceContext;
agentInstanceContext.AuditProvider.View(newData, oldData, agentInstanceContext, factory);
agentInstanceContext.InstrumentationProvider.QViewProcessIRStream(factory, newData, oldData);
long timestamp = -1;
// add data points to the window
// we don't care about removed data from a prior view
if (newData != null) {
for (int i = 0; i < newData.Length; i++) {
timestamp = GetLongValue(newData[i]);
timeWindow.Add(timestamp, newData[i]);
}
}
// Remove from the window any events that have an older timestamp then the last event's timestamp
ArrayDeque<EventBean> expired = null;
if (timestamp != -1) {
expired = timeWindow.ExpireEvents(
timestamp -
timePeriodProvide.DeltaSubtract(timestamp, null, true, agentInstanceViewFactoryContext) +
1);
}
EventBean[] oldDataUpdate = null;
if ((expired != null) && (!expired.IsEmpty())) {
oldDataUpdate = expired.ToArray();
}
if ((oldData != null) && (agentInstanceViewFactoryContext.IsRemoveStream)) {
foreach (EventBean anOldData in oldData) {
timeWindow.Remove(anOldData);
}
if (oldDataUpdate == null) {
oldDataUpdate = oldData;
}
else {
oldDataUpdate = CollectionUtil.AddArrayWithSetSemantics(oldData, oldDataUpdate);
}
}
viewUpdatedCollection?.Update(newData, oldDataUpdate);
// If there are child views, fireStatementStopped update method
if (Child != null) {
agentInstanceContext.InstrumentationProvider.QViewIndicate(factory, newData, oldDataUpdate);
Child.Update(newData, oldDataUpdate);
agentInstanceContext.InstrumentationProvider.AViewIndicate();
}
agentInstanceContext.InstrumentationProvider.AViewProcessIRStream();
}
/// <summary>
/// Flatten the vector of arrays to an array. Return null if an empty vector was passed, else
/// return an array containing all the events.
/// </summary>
/// <param name="eventVector">vector</param>
/// <returns>array with all events</returns>
public static UniformPair<EventBean[]> FlattenList(ArrayDeque<UniformPair<EventBean[]>> eventVector)
{
if (eventVector.IsEmpty()) {
return null;
}
if (eventVector.Count == 1) {
return eventVector.First;
}
var totalNew = 0;
var totalOld = 0;
foreach (var pair in eventVector) {
if (pair != null) {
if (pair.First != null) {
totalNew += pair.First.Length;
}
if (pair.Second != null) {
totalOld += pair.Second.Length;
}
}
}
if (totalNew + totalOld == 0) {
return null;
}
EventBean[] resultNew = null;
if (totalNew > 0) {
resultNew = new EventBean[totalNew];
}
EventBean[] resultOld = null;
if (totalOld > 0) {
resultOld = new EventBean[totalOld];
}
var destPosNew = 0;
var destPosOld = 0;
foreach (var pair in eventVector) {
if (pair != null) {
if (pair.First != null) {
Array.Copy(pair.First, 0, resultNew, destPosNew, pair.First.Length);
destPosNew += pair.First.Length;
}
if (pair.Second != null) {
Array.Copy(pair.Second, 0, resultOld, destPosOld, pair.Second.Length);
destPosOld += pair.Second.Length;
}
}
}
return new UniformPair<EventBean[]>(resultNew, resultOld);
}
private void NextToken()
{
tokens.RemoveFirst(); // Pop();
if (tokens.IsEmpty()) {
lookahead = new Token(TokenType.END, "");
}
else {
lookahead = tokens.First;
}
}
public EventBean[] GetProperty(EventBean theEvent, ExprEvaluatorContext exprEvaluatorContext)
{
var resultEvents = new ArrayDeque<EventBean>();
_eventsPerStream[0] = theEvent;
PopulateEvents(theEvent, 0, resultEvents, exprEvaluatorContext);
if (resultEvents.IsEmpty())
{
return null;
}
return resultEvents.ToArray();
}
/// <summary>Returns true if the window is empty, or false if not empty. </summary>
/// <returns>true if empty</returns>
public bool IsEmpty()
{
if (LastBatch != null)
{
if (LastBatch.IsNotEmpty())
{
return(false);
}
}
return(CurrentBatch.IsEmpty());
}
public PropertyTokenParser(
ArrayDeque<Token> tokens,
bool rootedDynamic)
{
if (tokens.IsEmpty()) {
throw new PropertyParseNodepException("Empty property name");
}
lookahead = tokens.First;
this.tokens = tokens;
dynamic = rootedDynamic;
}
/// <summary>
/// This method updates child views and clears the batch of events.
/// We schedule a new callback at this time if there were events in the batch.
/// </summary>
private void SendBatch()
{
_isCallbackScheduled = false;
// If there are child views and the batch was filled, fireStatementStopped update method
if (Child != null) {
// Convert to object arrays
EventBean[] newData = null;
EventBean[] oldData = null;
if (!_currentBatch.IsEmpty()) {
newData = _currentBatch.ToArray();
}
if (_lastBatch != null && !_lastBatch.IsEmpty()) {
oldData = _lastBatch.ToArray();
}
// Post new data (current batch) and old data (prior batch)
_viewUpdatedCollection?.Update(newData, oldData);
if (newData != null || oldData != null || _factory.isForceUpdate) {
_agentInstanceContext.InstrumentationProvider.QViewIndicate(_factory, newData, oldData);
Child.Update(newData, oldData);
_agentInstanceContext.InstrumentationProvider.AViewIndicate();
}
}
// Only if forceOutput is enabled or
// there have been any events in this or the last interval do we schedule a callback,
// such as to not waste resources when no events arrive.
if (!_currentBatch.IsEmpty() ||
_lastBatch != null && !_lastBatch.IsEmpty() ||
_factory.isForceUpdate) {
ScheduleCallback();
_isCallbackScheduled = true;
}
_lastBatch = _currentBatch;
_currentBatch = new ArrayDeque<EventBean>();
}
/// <summary>Returns the accumulative events for the input event. </summary>
/// <param name="theEvent">is the input event</param>
/// <param name="exprEvaluatorContext">expression evaluation context</param>
/// <returns>events per stream for each row</returns>
public ArrayDeque <EventBean[]> GetAccumulative(EventBean theEvent, ExprEvaluatorContext exprEvaluatorContext)
{
var resultEvents = new ArrayDeque <EventBean[]>();
var eventsPerStream = new EventBean[_levels];
eventsPerStream[0] = theEvent;
PopulateEvents(eventsPerStream, theEvent, 0, resultEvents, exprEvaluatorContext);
if (resultEvents.IsEmpty())
{
return(null);
}
return(resultEvents);
}
public override void Update(
EventBean[] newData,
EventBean[] oldData)
{
_agentInstanceContext.AuditProvider.View(newData, oldData, _agentInstanceContext, _factory);
_agentInstanceContext.InstrumentationProvider.QViewProcessIRStream(_factory, newData, oldData);
// we don't care about removed data from a prior view
if (newData == null || newData.Length == 0) {
_agentInstanceContext.InstrumentationProvider.AViewProcessIRStream();
return;
}
// If we have an empty window about to be filled for the first time, schedule a callback
if (_currentBatch.IsEmpty()) {
if (_currentReferencePoint == null) {
_currentReferencePoint = _factory.optionalReferencePoint;
if (_currentReferencePoint == null) {
_currentReferencePoint = _agentInstanceContext.StatementContext.SchedulingService.Time;
}
}
// Schedule the next callback if there is none currently scheduled
if (!_isCallbackScheduled) {
ScheduleCallback();
_isCallbackScheduled = true;
}
}
// add data points to the timeWindow
foreach (var newEvent in newData) {
_currentBatch.Add(newEvent);
}
// We do not update child views, since we batch the events.
_agentInstanceContext.InstrumentationProvider.AViewProcessIRStream();
}
public void DequeueBackTest()
{
for (int i = 0; i < 3; i++)
{
deque.Enqueue(i);
}
for (int i = 0; i < 3; i++)
{
deque.EnqueueFront(i);
}
Assert.AreEqual(2, deque.DequeueBack());
Assert.AreEqual("{2, 1, 0, 0, 1}", deque.ToString());
for (int i = 0; i < 5; i++)
{
deque.DequeueBack();
}
Assert.AreEqual(true, deque.IsEmpty());
}
/// <summary>Returns true if the window is empty, or false if not empty. </summary>
/// <returns>true if empty</returns>
public bool IsEmpty()
{
return(_events.IsEmpty());
}
// Called based on schedule evaluation registered when a variable changes (new data is null).
// Called when new data arrives.
private void Expire(
EventBean[] newData,
EventBean[] oldData)
{
OneEventCollection expired = null;
if (oldData != null) {
expired = new OneEventCollection();
expired.Add(oldData);
}
var expiredCount = 0;
if (!window.IsEmpty()) {
var newest = window.Last;
while (true) {
var first = window.First;
var pass = CheckEvent(first, newest, expiredCount);
if (!pass) {
if (expired == null) {
expired = new OneEventCollection();
}
var removed = window.RemoveFirst().TheEvent;
expired.Add(removed);
if (aggregationService != null) {
removedEvents[0] = removed;
aggregationService.ApplyLeave(removedEvents, null, agentInstanceContext);
}
expiredCount++;
InternalHandleExpired(first);
}
else {
break;
}
if (window.IsEmpty()) {
aggregationService?.ClearResults(agentInstanceContext);
break;
}
}
}
// Check for any events that get pushed out of the window
EventBean[] expiredArr = null;
if (expired != null) {
expiredArr = expired.ToArray();
}
// update event buffer for access by expressions, if any
viewUpdatedCollection?.Update(newData, expiredArr);
// If there are child views, call update method
if (child != null) {
agentInstanceContext.InstrumentationProvider.QViewIndicate(factory, newData, expiredArr);
child.Update(newData, expiredArr);
agentInstanceContext.InstrumentationProvider.AViewIndicate();
}
}
/// <summary>
/// Add to the current node building up the tree path information.
/// </summary>
/// <param name="remainingParameters">The remaining parameters.</param>
/// <param name="filterCallback">The filter callback.</param>
/// <param name="currentNode">is the node to add to</param>
/// <param name="treePathInfo">is filled with information about which indizes were chosen to add the filter to</param>
/// <param name="lockFactory">The lock factory.</param>
private static void AddToNode(
ArrayDeque <FilterValueSetParam> remainingParameters,
FilterHandle filterCallback,
FilterHandleSetNode currentNode,
ArrayDeque <EventTypeIndexBuilderIndexLookupablePair> treePathInfo,
FilterServiceGranularLockFactory lockFactory)
{
if ((ExecutionPathDebugLog.IsEnabled) && (Log.IsDebugEnabled))
{
Log.Debug(".addToNode (" + Thread.CurrentThread.ManagedThreadId + ") Adding filterCallback, node=" + currentNode +
" remainingParameters=" + PrintRemainingParameters(remainingParameters));
}
// If no parameters are specified, add to current node, and done
if (remainingParameters.IsEmpty())
{
using (currentNode.NodeRWLock.AcquireWriteLock())
{
currentNode.Add(filterCallback);
}
return;
}
// Need to find an existing index that matches one of the filter parameters
Pair <FilterValueSetParam, FilterParamIndexBase> pair;
using (currentNode.NodeRWLock.AcquireReadLock())
{
pair = IndexHelper.FindIndex(remainingParameters, currentNode.Indizes);
// Found an index matching a filter parameter
if (pair != null)
{
remainingParameters.Remove(pair.First);
var filterForValue = pair.First.FilterForValue;
var index = pair.Second;
treePathInfo.Add(new EventTypeIndexBuilderIndexLookupablePair(index, filterForValue));
AddToIndex(remainingParameters, filterCallback, index, filterForValue, treePathInfo, lockFactory);
return;
}
}
// An index for any of the filter parameters was not found, create one
using (currentNode.NodeRWLock.AcquireWriteLock())
{
pair = IndexHelper.FindIndex(remainingParameters, currentNode.Indizes);
// Attempt to find an index again this time under a write lock
if (pair != null)
{
remainingParameters.Remove(pair.First);
var filterForValue = pair.First.FilterForValue;
var indexX = pair.Second;
treePathInfo.Add(new EventTypeIndexBuilderIndexLookupablePair(indexX, filterForValue));
AddToIndex(remainingParameters, filterCallback, indexX, filterForValue, treePathInfo, lockFactory);
return;
}
// No index found that matches any parameters, create a new one
// Pick the next parameter for an index
FilterValueSetParam parameterPickedForIndex = remainingParameters.RemoveFirst();
var index = IndexFactory.CreateIndex(parameterPickedForIndex.Lookupable, lockFactory, parameterPickedForIndex.FilterOperator);
currentNode.Indizes.Add(index);
treePathInfo.Add(new EventTypeIndexBuilderIndexLookupablePair(index, parameterPickedForIndex.FilterForValue));
AddToIndex(remainingParameters, filterCallback, index, parameterPickedForIndex.FilterForValue, treePathInfo, lockFactory);
}
}
/// <summary>
/// Add to an index the value to filter for.
/// </summary>
/// <param name="remainingParameters">The remaining parameters.</param>
/// <param name="filterCallback">The filter callback.</param>
/// <param name="index">is the index to add to</param>
/// <param name="filterForValue">is the filter parameter value to add</param>
/// <param name="treePathInfo">is the specification to fill on where is was added</param>
/// <param name="lockFactory">The lock factory.</param>
private static void AddToIndex(
ArrayDeque <FilterValueSetParam> remainingParameters,
FilterHandle filterCallback,
FilterParamIndexBase index,
Object filterForValue,
ArrayDeque <EventTypeIndexBuilderIndexLookupablePair> treePathInfo,
FilterServiceGranularLockFactory lockFactory)
{
if ((ExecutionPathDebugLog.IsEnabled) && (Log.IsDebugEnabled))
{
Log.Debug(".addToIndex ({0}) Adding to index {1} expressionValue={2}",
Thread.CurrentThread.ManagedThreadId, index, filterForValue);
}
EventEvaluator eventEvaluator;
using (index.ReadWriteLock.AcquireReadLock())
{
eventEvaluator = index[filterForValue];
// The filter parameter value already existed in bean, add and release locks
if (eventEvaluator != null)
{
var added = AddToEvaluator(remainingParameters, filterCallback, eventEvaluator, treePathInfo, lockFactory);
if (added)
{
return;
}
}
}
// new filter parameter value, need a write lock
using (index.ReadWriteLock.AcquireWriteLock())
{
eventEvaluator = index[filterForValue];
// It may exist now since another thread could have added the entry
if (eventEvaluator != null)
{
var added = AddToEvaluator(remainingParameters, filterCallback, eventEvaluator, treePathInfo, lockFactory);
if (added)
{
return;
}
// The found eventEvaluator must be converted to a new FilterHandleSetNode
var nextIndexX = (FilterParamIndexBase)eventEvaluator;
var newNode = new FilterHandleSetNode(lockFactory.ObtainNew());
newNode.Add(nextIndexX);
index.Remove(filterForValue);
index[filterForValue] = newNode;
AddToNode(remainingParameters, filterCallback, newNode, treePathInfo, lockFactory);
return;
}
// The index does not currently have this filterCallback value,
// if there are no remaining parameters, create a node
if (remainingParameters.IsEmpty())
{
var node = new FilterHandleSetNode(lockFactory.ObtainNew());
AddToNode(remainingParameters, filterCallback, node, treePathInfo, lockFactory);
index[filterForValue] = node;
return;
}
// If there are remaining parameters, create a new index for the next parameter
FilterValueSetParam parameterPickedForIndex = remainingParameters.RemoveFirst();
var nextIndex = IndexFactory.CreateIndex(parameterPickedForIndex.Lookupable, lockFactory, parameterPickedForIndex.FilterOperator);
index[filterForValue] = nextIndex;
treePathInfo.Add(new EventTypeIndexBuilderIndexLookupablePair(nextIndex, parameterPickedForIndex.FilterForValue));
AddToIndex(remainingParameters, filterCallback, nextIndex, parameterPickedForIndex.FilterForValue, treePathInfo, lockFactory);
}
}
private void ProcessDispatches(
ArrayDeque <NamedWindowConsumerLatch> dispatches,
ArrayDeque <NamedWindowConsumerLatch> work,
IDictionary <EPStatementAgentInstanceHandle, Object> dispatchesPerStmt)
{
if (dispatches.Count == 1)
{
var latch = dispatches.First();
try
{
latch.Await();
var newData = latch.DeltaData.NewData;
var oldData = latch.DeltaData.OldData;
foreach (var entry in latch.DispatchTo)
{
var handle = entry.Key;
handle.StatementHandle.MetricsHandle.Call(
_metricReportingService.PerformanceCollector,
() => { ProcessHandle(handle, entry.Value, newData, oldData); });
if ((_isPrioritized) && (handle.IsPreemptive))
{
break;
}
}
}
finally
{
latch.Done();
}
return;
}
// Multiple different-result dispatches to same or different statements are needed in two situations:
// a) an event comes in, triggers two insert-into statements inserting into the same named window and the window produces 2 results
// b) a time batch is grouped in the named window, and a timer fires for both groups at the same time producing more then one result
// c) two on-merge/update/delete statements fire for the same arriving event each updating the named window
// Most likely all dispatches go to different statements since most statements are not joins of
// named windows that produce results at the same time. Therefore sort by statement handle.
// We need to process in N-element chains to preserve dispatches that are next to each other for the same thread.
while (!dispatches.IsEmpty())
{
// the first latch always gets awaited
var first = dispatches.RemoveFirst();
first.Await();
work.Add(first);
// determine which further latches are in this chain and
// add these, skipping await for any latches in the chain
dispatches.RemoveWhere(
(next, continuation) =>
{
NamedWindowConsumerLatch earlier = next.Earlier;
if (earlier == null || work.Contains(earlier))
{
work.Add(next);
return(true);
}
else
{
continuation.Value = false;
return(false);
}
});
ProcessDispatches(work, dispatchesPerStmt);
}
}
/// <summary>
/// Returns true if the window is empty, or false if not empty.
/// </summary>
/// <returns>true if empty</returns>
public bool IsEmpty()
{
return(_window.IsEmpty());
}
private static void EvaluateEventForStatementInternal(EPServicesContext servicesContext, EventBean theEvent, IList <AgentInstance> agentInstances)
{
// context was created - reevaluate for the given event
var callbacks = new ArrayDeque <FilterHandle>(2);
servicesContext.FilterService.Evaluate(theEvent, callbacks); // evaluates for ALL statements
if (callbacks.IsEmpty())
{
return;
}
// there is a single callback and a single context, if they match we are done
if (agentInstances.Count == 1 && callbacks.Count == 1)
{
var agentInstance = agentInstances[0];
if (agentInstance.AgentInstanceContext.StatementId == callbacks.First.StatementId)
{
Process(agentInstance, servicesContext, callbacks, theEvent);
}
return;
}
// use the right sorted/unsorted Map keyed by AgentInstance to sort
var isPrioritized = servicesContext.ConfigSnapshot.EngineDefaults.Execution.IsPrioritized;
IDictionary <AgentInstance, object> stmtCallbacks;
if (!isPrioritized)
{
stmtCallbacks = new Dictionary <AgentInstance, object>();
}
else
{
stmtCallbacks = new SortedDictionary <AgentInstance, object>(AgentInstanceComparator.INSTANCE);
}
// process all callbacks
foreach (var filterHandle in callbacks)
{
// determine if this filter entry applies to any of the affected agent instances
var statementId = filterHandle.StatementId;
AgentInstance agentInstanceFound = null;
foreach (var agentInstance in agentInstances)
{
if (agentInstance.AgentInstanceContext.StatementId == statementId)
{
agentInstanceFound = agentInstance;
break;
}
}
if (agentInstanceFound == null)
{ // when the callback is for some other stmt
continue;
}
var handleCallback = (EPStatementHandleCallback)filterHandle;
var handle = handleCallback.AgentInstanceHandle;
// Self-joins require that the internal dispatch happens after all streams are evaluated.
// Priority or preemptive settings also require special ordering.
if (handle.CanSelfJoin || isPrioritized)
{
var stmtCallback = stmtCallbacks.Get(agentInstanceFound);
if (stmtCallback == null)
{
stmtCallbacks.Put(agentInstanceFound, handleCallback);
}
else if (stmtCallback is ICollection <FilterHandle> )
{
var collection = (ICollection <FilterHandle>)stmtCallback;
if (!collection.Contains(handleCallback)) // De-duplicate for Filter OR expression paths
{
collection.Add(handleCallback);
}
}
else
{
var deque = new ArrayDeque <FilterHandle>(4);
deque.Add((EPStatementHandleCallback)stmtCallback);
if (stmtCallback != handleCallback) // De-duplicate for Filter OR expression paths
{
deque.Add(handleCallback);
}
stmtCallbacks.Put(agentInstanceFound, deque);
}
continue;
}
// no need to be sorted, process
Process(agentInstanceFound, servicesContext, Collections.SingletonList <FilterHandle>(handleCallback), theEvent);
}
if (stmtCallbacks.IsEmpty())
{
return;
}
// Process self-join or sorted prioritized callbacks
foreach (var entry in stmtCallbacks)
{
var agentInstance = entry.Key;
var callbackList = entry.Value;
if (callbackList is ICollection <FilterHandle> )
{
Process(agentInstance, servicesContext, (ICollection <FilterHandle>)callbackList, theEvent);
}
else
{
Process(agentInstance, servicesContext, Collections.SingletonList <FilterHandle>((FilterHandle)callbackList), theEvent);
}
if (agentInstance.AgentInstanceContext.EpStatementAgentInstanceHandle.IsPreemptive)
{
return;
}
}
}
public static ExprDotNodeRealizedChain GetChainEvaluators(
int?streamOfProviderIfApplicable,
EPType inputType,
IList <ExprChainedSpec> chainSpec,
ExprValidationContext validationContext,
bool isDuckTyping,
ExprDotNodeFilterAnalyzerInput inputDesc)
{
var methodEvals = new List <ExprDotEval>();
var currentInputType = inputType;
EnumMethodEnum?lastLambdaFunc = null;
var lastElement = chainSpec.IsEmpty() ? null : chainSpec[chainSpec.Count - 1];
ExprDotNodeFilterAnalyzerDesc filterAnalyzerDesc = null;
var chainSpecStack = new ArrayDeque <ExprChainedSpec>(chainSpec);
while (!chainSpecStack.IsEmpty())
{
var chainElement = chainSpecStack.RemoveFirst();
lastLambdaFunc = null; // reset
// compile parameters for chain element
var paramEvals = new ExprEvaluator[chainElement.Parameters.Count];
var paramTypes = new Type[chainElement.Parameters.Count];
for (var i = 0; i < chainElement.Parameters.Count; i++)
{
paramEvals[i] = chainElement.Parameters[i].ExprEvaluator;
paramTypes[i] = paramEvals[i].ReturnType;
}
// check if special 'size' method
if (currentInputType is ClassMultiValuedEPType)
{
var type = (ClassMultiValuedEPType)currentInputType;
if ((chainElement.Name.ToLower() == "size") && paramTypes.Length == 0 && Equals(lastElement, chainElement))
{
var sizeExpr = new ExprDotEvalArraySize();
methodEvals.Add(sizeExpr);
currentInputType = sizeExpr.TypeInfo;
continue;
}
if ((chainElement.Name.ToLower() == "get") && paramTypes.Length == 1 && paramTypes[0].GetBoxedType() == typeof(int?))
{
var componentType = type.Component;
var get = new ExprDotEvalArrayGet(paramEvals[0], componentType);
methodEvals.Add(get);
currentInputType = get.TypeInfo;
continue;
}
}
// determine if there is a matching method
var matchingMethod = false;
var methodTarget = GetMethodTarget(currentInputType);
if (methodTarget != null)
{
try
{
GetValidateMethodDescriptor(methodTarget, chainElement.Name, chainElement.Parameters, validationContext);
matchingMethod = true;
}
catch (ExprValidationException)
{
// expected
}
}
// resolve lambda
if (chainElement.Name.IsEnumerationMethod() && (!matchingMethod || methodTarget.IsArray || methodTarget.IsImplementsInterface(typeof(ICollection <object>))))
{
var enumerationMethod = EnumMethodEnumExtensions.FromName(chainElement.Name);
var eval = TypeHelper.Instantiate <ExprDotEvalEnumMethod>(enumerationMethod.GetImplementation());
eval.Init(streamOfProviderIfApplicable, enumerationMethod, chainElement.Name, currentInputType, chainElement.Parameters, validationContext);
currentInputType = eval.TypeInfo;
if (currentInputType == null)
{
throw new IllegalStateException("Enumeration method '" + chainElement.Name + "' has not returned type information");
}
methodEvals.Add(eval);
lastLambdaFunc = enumerationMethod;
continue;
}
// resolve datetime
if (chainElement.Name.IsDateTimeMethod() && (!matchingMethod || methodTarget == typeof(DateTimeOffset?)))
{
var datetimeMethod = DatetimeMethodEnumExtensions.FromName(chainElement.Name);
var datetimeImpl = ExprDotEvalDTFactory.ValidateMake(
validationContext.StreamTypeService, chainSpecStack, datetimeMethod, chainElement.Name,
currentInputType, chainElement.Parameters, inputDesc,
validationContext.EngineImportService.TimeZone,
validationContext.EngineImportService.TimeAbacus);
currentInputType = datetimeImpl.ReturnType;
if (currentInputType == null)
{
throw new IllegalStateException("Date-time method '" + chainElement.Name + "' has not returned type information");
}
methodEvals.Add(datetimeImpl.Eval);
filterAnalyzerDesc = datetimeImpl.IntervalFilterDesc;
continue;
}
// try to resolve as property if the last method returned a type
if (currentInputType is EventEPType)
{
var inputEventType = ((EventEPType)currentInputType).EventType;
var type = inputEventType.GetPropertyType(chainElement.Name);
var getter = inputEventType.GetGetter(chainElement.Name);
if (type != null && getter != null)
{
var noduck = new ExprDotEvalProperty(getter, EPTypeHelper.SingleValue(type.GetBoxedType()));
methodEvals.Add(noduck);
currentInputType = EPTypeHelper.SingleValue(EPTypeHelper.GetClassSingleValued(noduck.TypeInfo));
continue;
}
}
// Finally try to resolve the method
if (methodTarget != null)
{
try
{
// find descriptor again, allow for duck typing
var desc = GetValidateMethodDescriptor(methodTarget, chainElement.Name, chainElement.Parameters, validationContext);
var fastMethod = desc.FastMethod;
paramEvals = desc.ChildEvals;
ExprDotEval eval;
if (currentInputType is ClassEPType)
{
// if followed by an enumeration method, convert array to collection
if (fastMethod.ReturnType.IsArray && !chainSpecStack.IsEmpty() && chainSpecStack.First.Name.IsEnumerationMethod())
{
eval = new ExprDotMethodEvalNoDuckWrapArray(validationContext.StatementName, fastMethod, paramEvals);
}
else
{
eval = new ExprDotMethodEvalNoDuck(validationContext.StatementName, fastMethod, paramEvals);
}
}
else
{
eval = new ExprDotMethodEvalNoDuckUnderlying(validationContext.StatementName, fastMethod, paramEvals);
}
methodEvals.Add(eval);
currentInputType = eval.TypeInfo;
}
catch (Exception e)
{
if (!isDuckTyping)
{
throw new ExprValidationException(e.Message, e);
}
else
{
var duck = new ExprDotMethodEvalDuck(validationContext.StatementName, validationContext.EngineImportService, chainElement.Name, paramTypes, paramEvals);
methodEvals.Add(duck);
currentInputType = duck.TypeInfo;
}
}
continue;
}
var message = "Could not find event property, enumeration method or instance method named '" +
chainElement.Name + "' in " + currentInputType.ToTypeDescriptive();
throw new ExprValidationException(message);
}
var intermediateEvals = methodEvals.ToArray();
if (lastLambdaFunc != null)
{
ExprDotEval finalEval = null;
if (currentInputType is EventMultiValuedEPType)
{
var mvType = (EventMultiValuedEPType)currentInputType;
var tableMetadata = validationContext.TableService.GetTableMetadataFromEventType(mvType.Component);
if (tableMetadata != null)
{
finalEval = new ExprDotEvalUnpackCollEventBeanTable(mvType.Component, tableMetadata);
}
else
{
finalEval = new ExprDotEvalUnpackCollEventBean(mvType.Component);
}
}
else if (currentInputType is EventEPType)
{
var epType = (EventEPType)currentInputType;
var tableMetadata = validationContext.TableService.GetTableMetadataFromEventType(epType.EventType);
if (tableMetadata != null)
{
finalEval = new ExprDotEvalUnpackBeanTable(epType.EventType, tableMetadata);
}
else
{
finalEval = new ExprDotEvalUnpackBean(epType.EventType);
}
}
if (finalEval != null)
{
methodEvals.Add(finalEval);
}
}
var unpackingEvals = methodEvals.ToArray();
return(new ExprDotNodeRealizedChain(intermediateEvals, unpackingEvals, filterAnalyzerDesc));
}
private void ProcessDispatches(
ArrayDeque<NamedWindowConsumerLatch> dispatches,
ArrayDeque<NamedWindowConsumerLatch> work,
IDictionary<EPStatementAgentInstanceHandle, object> dispatchesPerStmt)
{
if (dispatches.Count == 1) {
var latch = dispatches.First;
try {
latch.Await();
var newData = latch.DeltaData.NewData;
var oldData = latch.DeltaData.OldData;
if (metricReportingService.IsMetricsReportingEnabled) {
foreach (var entry in latch.DispatchTo) {
var handle = entry.Key;
if (handle.StatementHandle.MetricsHandle.IsEnabled) {
var performanceMetric = PerformanceMetricsHelper.Call(
() => ProcessHandle(handle, entry.Value, newData, oldData), 1);
metricReportingService.AccountTime(
handle.StatementHandle.MetricsHandle,
performanceMetric, performanceMetric.NumInput);
}
else {
ProcessHandle(handle, entry.Value, newData, oldData);
}
if (isPrioritized && handle.IsPreemptive) {
break;
}
}
}
else {
foreach (var entry in latch.DispatchTo) {
var handle = entry.Key;
ProcessHandle(handle, entry.Value, newData, oldData);
if (isPrioritized && handle.IsPreemptive) {
break;
}
}
}
}
finally {
latch.Done();
}
return;
}
// Multiple different-result dispatches to same or different statements are needed in two situations:
// a) an event comes in, triggers two insert-into statements inserting into the same named window and the window produces 2 results
// b) a time batch is grouped in the named window, and a timer fires for both groups at the same time producing more then one result
// c) two on-merge/update/delete statements fire for the same arriving event each updating the named window
// Most likely all dispatches go to different statements since most statements are not joins of
// named windows that produce results at the same time. Therefore sort by statement handle.
// We need to process in N-element chains to preserve dispatches that are next to each other for the same thread.
while (!dispatches.IsEmpty()) {
// the first latch always gets awaited
var first = dispatches.RemoveFirst();
first.Await();
work.Add(first);
// determine which further latches are in this chain and add these, skipping await for any latches in the chain
dispatches.RemoveWhere(
(next, continuation) => {
var result = next.Earlier == null || work.Contains(next.Earlier);
continuation.Value = !result;
return result;
},
work.Add);
#if false
var enumerator = dispatches.GetEnumerator();
while (enumerator.MoveNext()) {
var next = enumerator.Current;
var earlier = next.Earlier;
if (earlier == null || work.Contains(earlier)) {
work.Add(next);
enumerator.Remove();
}
else {
break;
}
}
#endif
ProcessDispatches(work, dispatchesPerStmt);
}
}
public override void Update(EventBean[] newData, EventBean[] oldData)
{
if (InstrumentationHelper.ENABLED)
{
InstrumentationHelper.Get()
.QViewProcessIRStream(this, _externallyTimedWindowViewFactory.ViewName, newData, oldData);
}
long timestamp = -1;
// add data points to the window
// we don't care about removed data from a prior view
if (newData != null)
{
for (int i = 0; i < newData.Length; i++)
{
timestamp = GetLongValue(newData[i]);
_timeWindow.Add(timestamp, newData[i]);
}
}
// Remove from the window any events that have an older timestamp then the last event's timestamp
ArrayDeque <EventBean> expired = null;
if (timestamp != -1)
{
expired =
_timeWindow.ExpireEvents(timestamp - _timeDeltaComputation.DeltaMillisecondsSubtract(timestamp) + 1);
}
EventBean[] oldDataUpdate = null;
if ((expired != null) && (!expired.IsEmpty()))
{
oldDataUpdate = expired.ToArray();
}
if ((oldData != null) && (AgentInstanceViewFactoryContext.IsRemoveStream))
{
foreach (EventBean anOldData in oldData)
{
_timeWindow.Remove(anOldData);
}
if (oldDataUpdate == null)
{
oldDataUpdate = oldData;
}
else
{
oldDataUpdate = CollectionUtil.AddArrayWithSetSemantics(oldData, oldDataUpdate);
}
}
if (_viewUpdatedCollection != null)
{
_viewUpdatedCollection.Update(newData, oldDataUpdate);
}
// If there are child views, fireStatementStopped update method
if (HasViews)
{
if (InstrumentationHelper.ENABLED)
{
InstrumentationHelper.Get().QViewIndicate(this, _externallyTimedWindowViewFactory.ViewName, newData, oldDataUpdate);
}
UpdateChildren(newData, oldDataUpdate);
if (InstrumentationHelper.ENABLED)
{
InstrumentationHelper.Get().AViewIndicate();
}
}
if (InstrumentationHelper.ENABLED)
{
InstrumentationHelper.Get().AViewProcessIRStream();
}
}
