Examples with StreamEvent org.ballerinalang.siddhi.core.event.stream.StreamEvent used on opensource projects

Example 61 with StreamEvent

use of org.ballerinalang.siddhi.core.event.stream.StreamEvent in project ballerina by ballerina-lang.

the class IncrementalExecutor method dispatchEvents.

private void dispatchEvents(Map<String, BaseIncrementalValueStore> baseIncrementalValueGroupByStore) {
    int noOfEvents = baseIncrementalValueGroupByStore.size();
    if (noOfEvents > 0) {
        ComplexEventChunk<StreamEvent> eventChunk = new ComplexEventChunk<>(true);
        for (BaseIncrementalValueStore aBaseIncrementalValueStore : baseIncrementalValueGroupByStore.values()) {
            StreamEvent streamEvent = aBaseIncrementalValueStore.createStreamEvent();
            eventChunk.add(streamEvent);
        }
        LOG.debug("Event dispatched by " + this.duration + " incremental executor: " + eventChunk.toString());
        table.addEvents(eventChunk, noOfEvents);
        if (getNextExecutor() != null) {
            next.execute(eventChunk);
        }
    }
    baseIncrementalValueGroupByStore.clear();
}

Example 62 with StreamEvent

use of org.ballerinalang.siddhi.core.event.stream.StreamEvent in project ballerina by ballerina-lang.

the class IncrementalExecutor method execute.

@Override
public void execute(ComplexEventChunk streamEventChunk) {
    LOG.debug("Event Chunk received by " + this.duration + " incremental executor: " + streamEventChunk.toString());
    streamEventChunk.reset();
    while (streamEventChunk.hasNext()) {
        StreamEvent streamEvent = (StreamEvent) streamEventChunk.next();
        streamEventChunk.remove();
        String timeZone = getTimeZone(streamEvent);
        long timestamp = getTimestamp(streamEvent, timeZone);
        startTimeOfAggregates = IncrementalTimeConverterUtil.getStartTimeOfAggregates(timestamp, duration, timeZone);
        if (isRootAndLoadedFromTable) {
            // arise when replaying data.
            if (timestamp < nextEmitTime) {
                continue;
            } else {
                isRootAndLoadedFromTable = false;
            }
        }
        if (bufferSize > 0 && isRoot) {
            try {
                mutex.acquire();
                dispatchBufferedAggregateEvents(startTimeOfAggregates);
            } catch (InterruptedException e) {
                Thread.currentThread().interrupt();
                throw new SiddhiAppRuntimeException("Error when dispatching events from buffer", e);
            } finally {
                mutex.release();
            }
            if (streamEvent.getType() == ComplexEvent.Type.CURRENT) {
                if (!eventOlderThanBuffer) {
                    processAggregates(streamEvent);
                } else if (!ignoreEventsOlderThanBuffer) {
                    // Incoming event is older than buffer
                    startTimeOfAggregates = minTimestampInBuffer;
                    processAggregates(streamEvent);
                }
            }
        } else {
            if (timestamp >= nextEmitTime) {
                nextEmitTime = IncrementalTimeConverterUtil.getNextEmitTime(timestamp, duration, timeZone);
                dispatchAggregateEvents(startTimeOfAggregates);
                if (!isProcessingOnExternalTime) {
                    sendTimerEvent(timeZone);
                }
            }
            if (streamEvent.getType() == ComplexEvent.Type.CURRENT) {
                if (nextEmitTime == IncrementalTimeConverterUtil.getNextEmitTime(timestamp, duration, timeZone)) {
                    // This condition checks whether incoming event belongs to current processing event's time slot
                    processAggregates(streamEvent);
                } else if (!ignoreEventsOlderThanBuffer) {
                    // Incoming event is older than current processing event.
                    startTimeOfAggregates = minTimestampInBuffer;
                    processAggregates(streamEvent);
                }
            }
        }
    }
}

Example 63 with StreamEvent

use of org.ballerinalang.siddhi.core.event.stream.StreamEvent in project ballerina by ballerina-lang.

the class RecreateInMemoryData method recreateInMemoryData.

public void recreateInMemoryData() {
    if (incrementalExecutorMap.get(incrementalDurations.get(0)).getNextEmitTime() != -1) {
        // created. Hence this method does not have to be executed.
        return;
    }
    Event[] events;
    Long latestEventTimestamp = null;
    // Get all events from table corresponding to max duration
    Table tableForMaxDuration = aggregationTables.get(incrementalDurations.get(incrementalDurations.size() - 1));
    StoreQuery storeQuery = StoreQuery.query().from(InputStore.store(tableForMaxDuration.getTableDefinition().getId())).select(Selector.selector().orderBy(Expression.variable("AGG_TIMESTAMP")));
    StoreQueryRuntime storeQueryRuntime = StoreQueryParser.parse(storeQuery, siddhiAppContext, tableMap, windowMap, aggregationMap);
    // Get latest event timestamp in tableForMaxDuration
    events = storeQueryRuntime.execute();
    if (events != null) {
        latestEventTimestamp = (Long) events[events.length - 1].getData(0);
    }
    for (int i = incrementalDurations.size() - 1; i > 0; i--) {
        TimePeriod.Duration recreateForDuration = incrementalDurations.get(i);
        IncrementalExecutor incrementalExecutor = incrementalExecutorMap.get(recreateForDuration);
        // Get the table previous to the duration for which we need to recreate (e.g. if we want to recreate
        // for minute duration, take the second table [provided that aggregation is done for seconds])
        Table recreateFromTable = aggregationTables.get(incrementalDurations.get(i - 1));
        storeQuery = StoreQuery.query().from(InputStore.store(recreateFromTable.getTableDefinition().getId())).select(Selector.selector().orderBy(Expression.variable("AGG_TIMESTAMP")));
        storeQueryRuntime = StoreQueryParser.parse(storeQuery, siddhiAppContext, tableMap, windowMap, aggregationMap);
        events = storeQueryRuntime.execute();
        if (events != null) {
            long referenceToNextLatestEvent = (Long) events[events.length - 1].getData(0);
            String timeZoneOfNextLatestEvent = events[events.length - 1].getData(1).toString();
            if (latestEventTimestamp != null) {
                List<Event> eventsNewerThanLatestEventOfRecreateForDuration = new ArrayList<>();
                for (Event event : events) {
                    // After getting the events from recreateFromTable, get the time bucket it belongs to,
                    // if each of these events were in the recreateForDuration. This helps to identify the events,
                    // which must be processed in-memory for recreateForDuration.
                    long timeBucketForNextDuration = IncrementalTimeConverterUtil.getStartTimeOfAggregates((Long) event.getData(0), recreateForDuration, event.getData(1).toString());
                    if (timeBucketForNextDuration > latestEventTimestamp) {
                        eventsNewerThanLatestEventOfRecreateForDuration.add(event);
                    }
                }
                events = eventsNewerThanLatestEventOfRecreateForDuration.toArray(new Event[eventsNewerThanLatestEventOfRecreateForDuration.size()]);
            }
            latestEventTimestamp = referenceToNextLatestEvent;
            ComplexEventChunk<StreamEvent> complexEventChunk = new ComplexEventChunk<>(false);
            for (Event event : events) {
                StreamEvent streamEvent = streamEventPool.borrowEvent();
                streamEvent.setOutputData(event.getData());
                complexEventChunk.add(streamEvent);
            }
            incrementalExecutor.execute(complexEventChunk);
            if (i == 1) {
                TimePeriod.Duration rootDuration = incrementalDurations.get(0);
                IncrementalExecutor rootIncrementalExecutor = incrementalExecutorMap.get(rootDuration);
                long emitTimeOfLatestEventInTable = IncrementalTimeConverterUtil.getNextEmitTime(latestEventTimestamp, rootDuration, timeZoneOfNextLatestEvent);
                rootIncrementalExecutor.setValuesForInMemoryRecreateFromTable(true, emitTimeOfLatestEventInTable);
            }
        }
    }
}

Example 64 with StreamEvent

use of org.ballerinalang.siddhi.core.event.stream.StreamEvent in project ballerina by ballerina-lang.

the class FindStoreQueryRuntime method generateResetComplexEventChunk.

private ComplexEventChunk<ComplexEvent> generateResetComplexEventChunk(MetaStreamEvent metaStreamEvent) {
    StreamEvent streamEvent = new StreamEvent(metaStreamEvent.getBeforeWindowData().size(), metaStreamEvent.getOnAfterWindowData().size(), metaStreamEvent.getOutputData().size());
    streamEvent.setType(ComplexEvent.Type.RESET);
    StateEvent stateEvent = stateEventPool.borrowEvent();
    if (eventType == MetaStreamEvent.EventType.AGGREGATE) {
        stateEvent.addEvent(1, streamEvent);
    } else {
        stateEvent.addEvent(0, streamEvent);
    }
    stateEvent.setType(ComplexEvent.Type.RESET);
    ComplexEventChunk<ComplexEvent> complexEventChunk = new ComplexEventChunk<>(true);
    complexEventChunk.add(stateEvent);
    return complexEventChunk;
}

Example 65 with StreamEvent

use of org.ballerinalang.siddhi.core.event.stream.StreamEvent in project ballerina by ballerina-lang.

the class SelectStoreQueryRuntime method execute.

public Event[] execute() {
    try {
        StateEvent stateEvent = new StateEvent(1, 0);
        StreamEvent streamEvents = queryableProcessor.query(stateEvent, compiledCondition, compiledSelection);
        if (streamEvents == null) {
            return null;
        } else {
            List<Event> events = new ArrayList<Event>();
            while (streamEvents != null) {
                events.add(new Event(streamEvents.getTimestamp(), streamEvents.getOutputData()));
                streamEvents = streamEvents.getNext();
            }
            return events.toArray(new Event[0]);
        }
    } catch (Throwable t) {
        throw new StoreQueryRuntimeException("Error executing '" + queryName + "', " + t.getMessage(), t);
    }
}