Showing the changes to Source/Libraries/TimeSeriesPlatformLibrary/Samples/TemporalSubscriber.cpp (1 of 14 files). Show all
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| 1 | +//****************************************************************************************************** | |
| 2 | +// TemporalSubscriber.cpp - Gbtc | |
| 3 | +// | |
| 4 | +// Copyright � 2019, Grid Protection Alliance. All Rights Reserved. | |
| 5 | +// | |
| 6 | +// Licensed to the Grid Protection Alliance (GPA) under one or more contributor license agreements. See | |
| 7 | +// the NOTICE file distributed with this work for additional information regarding copyright ownership. | |
| 8 | +// The GPA licenses this file to you under the MIT License (MIT), the "License"; you may not use this | |
| 9 | +// file except in compliance with the License. You may obtain a copy of the License at: | |
| 10 | +// | |
| 11 | +// http://opensource.org/licenses/MIT | |
| 12 | +// | |
| 13 | +// Unless agreed to in writing, the subject software distributed under the License is distributed on an | |
| 14 | +// "AS-IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. Refer to the | |
| 15 | +// License for the specific language governing permissions and limitations. | |
| 16 | +// | |
| 17 | +// Code Modification History: | |
| 18 | +// ---------------------------------------------------------------------------------------------------- | |
| 19 | +// 03/01/2019 - J. Ritchie Carroll | |
| 20 | +// Generated original version of source code. | |
| 21 | +// | |
| 22 | +//****************************************************************************************************** | |
| 23 | + | |
| 24 | +#include "TemporalSubscriber.h" | |
| 25 | + | |
| 26 | +using namespace std; | |
| 27 | +using namespace GSF; | |
| 28 | +using namespace GSF::Data; | |
| 29 | +using namespace GSF::TimeSeries; | |
| 30 | + | |
| 31 | +GSF::Data::DataSetPtr TemporalSubscriber::s_historyDataSet = nullptr; | |
| 32 | +GSF::Data::DataTablePtr TemporalSubscriber::s_history = nullptr; | |
| 33 | + | |
| 34 | +TemporalSubscriber::TemporalSubscriber(const SubscriberConnectionPtr& connection, std::function<void(const GSF::Guid&)> removeHandler) : | |
| 35 | + m_connection(connection), | |
| 36 | + m_removeHandler(removeHandler), | |
| 37 | + m_startTimestamp(ToTicks(m_connection->GetStartTimeConstraint())), | |
| 38 | + m_stopTimestamp(ToTicks(m_connection->GetStopTimeConstraint())), | |
| 39 | + m_currentTimestamp(m_startTimestamp), | |
| 40 | + m_currentRow(0), | |
| 41 | + m_stopped(false) | |
| 42 | +{ | |
| 43 | + if (s_historyDataSet == nullptr) | |
| 44 | + { | |
| 45 | + s_historyDataSet = DataSet::FromXml("History.xml"); | |
| 46 | + s_history = s_historyDataSet->Table("History"); | |
| 47 | + } | |
| 48 | + | |
| 49 | + m_lastRow = s_history->RowCount() - 1; | |
| 50 | + | |
| 51 | + if (m_lastRow < 0) | |
| 52 | + throw runtime_error("No history available - run with \"GenHistory\" argument."); | |
| 53 | + | |
| 54 | + m_processTimer = NewSharedPtr<Timer>(33, [this](Timer*, void*) { SendTemporalData(); }, true); | |
| 55 | + m_processTimer->Start(); | |
| 56 | +} | |
| 57 | + | |
| 58 | +TemporalSubscriber::~TemporalSubscriber() | |
| 59 | +{ | |
| 60 | + CompleteTemporalSubscription(); | |
| 61 | +} | |
| 62 | + | |
| 63 | +void TemporalSubscriber::SendTemporalData() | |
| 64 | +{ | |
| 65 | + static DataTable& history = *s_history; | |
| 66 | + static const int32_t signalIDColumn = history["SignalID"]->Index(); | |
| 67 | + static const int32_t timestampColumn = history["Timestamp"]->Index(); | |
| 68 | + static const int32_t valueColumn = history["Value"]->Index(); | |
| 69 | + | |
| 70 | + vector<MeasurementPtr> measurements; | |
| 71 | + DataRow& row = *history.Row(m_currentRow); | |
| 72 | + int64_t historyTimestamp = row.ValueAsInt64(timestampColumn).GetValueOrDefault(); | |
| 73 | + const int64_t groupTimestamp = historyTimestamp; | |
| 74 | + | |
| 75 | + while (historyTimestamp == groupTimestamp) | |
| 76 | + { | |
| 77 | + MeasurementPtr measurement = NewSharedPtr<Measurement>(); | |
| 78 | + | |
| 79 | + measurement->Timestamp = m_currentTimestamp; | |
| 80 | + measurement->SignalID = row.ValueAsGuid(signalIDColumn).GetValueOrDefault(); | |
| 81 | + measurement->Value = row.ValueAsDouble(valueColumn).GetValueOrDefault(); | |
| 82 | + | |
| 83 | + measurements.push_back(measurement); | |
| 84 | + | |
| 85 | + if (m_currentRow > m_lastRow) | |
| 86 | + m_currentRow = 0; | |
| 87 | + else | |
| 88 | + m_currentRow++; | |
| 89 | + | |
| 90 | + row = *history.Row(m_currentRow); | |
| 91 | + historyTimestamp = row.ValueAsInt64(timestampColumn).GetValueOrDefault(); | |
| 92 | + } | |
| 93 | + | |
| 94 | + m_connection->PublishMeasurements(measurements); | |
| 95 | + | |
| 96 | + // Setup next publication timestamp | |
| 97 | + m_currentTimestamp += HistoryInterval; | |
| 98 | + | |
| 99 | + if (m_currentTimestamp > m_stopTimestamp) | |
| 100 | + CompleteTemporalSubscription(); | |
| 101 | +} | |
| 102 | + | |
| 103 | +void TemporalSubscriber::CompleteTemporalSubscription() | |
| 104 | +{ | |
| 105 | + if (m_stopped) | |
| 106 | + return; | |
| 107 | + | |
| 108 | + m_stopped = true; | |
| 109 | + m_processTimer->Stop(); | |
| 110 | + m_connection->CompleteTemporalSubscription(); | |
| 111 | + m_removeHandler(m_connection->GetSubscriberID()); | |
| 112 | +} | |