Showing the changes to Source/Libraries/TimeSeriesPlatformLibrary/Samples/AdvancedSubscribe.cpp (1 of 24 files). Show all
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| @@ -59,34 +59,34 @@ void RunSubscriber(string hostname, uint16_t port); · 58 unmodified lines | |||
| 59 | // Measurements are transmitted via a separate UDP data channel. | 59 | // Measurements are transmitted via a separate UDP data channel. |
| 60 | int main(int argc, char* argv[]) | 60 | int main(int argc, char* argv[]) |
| 61 | { | 61 | { |
| 62 | string hostname; | 62 | string hostname; |
| 63 | uint16_t port; | 63 | uint16_t port; |
| 64 | 64 | ||
| 65 | // Ensure that the necessary | 65 | // Ensure that the necessary |
| 66 | // command line arguments are given. | 66 | // command line arguments are given. |
| 67 | if (argc < 3) | 67 | if (argc < 3) |
| 68 | { | 68 | { |
| 69 | cout << "Usage:" << endl; | 69 | cout << "Usage:" << endl; |
| 70 | cout << " AdvancedSubscribe HOSTNAME PORT" << endl; | 70 | cout << " AdvancedSubscribe HOSTNAME PORT" << endl; |
| 71 | return 0; | 71 | return 0; |
| 72 | } | 72 | } |
| 73 | 73 | ||
| 74 | // Get hostname and port. | 74 | // Get hostname and port. |
| 75 | hostname = argv[1]; | 75 | hostname = argv[1]; |
| 76 | stringstream(argv[2]) >> port; | 76 | stringstream(argv[2]) >> port; |
| 77 | 77 | ||
| 78 | // Run the subscriber. | 78 | // Run the subscriber. |
| 79 | RunSubscriber(hostname, port); | 79 | RunSubscriber(hostname, port); |
| 80 | 80 | ||
| 81 | // Wait until the user presses enter before quitting. | 81 | // Wait until the user presses enter before quitting. |
| 82 | string line; | 82 | string line; |
| 83 | getline(cin, line); | 83 | getline(cin, line); |
| 84 | 84 | ||
| 85 | // Disconnect the subscriber to stop background threads. | 85 | // Disconnect the subscriber to stop background threads. |
| 86 | Subscriber.Disconnect(); | 86 | Subscriber.Disconnect(); |
| 87 | cout << "Disconnected." << endl; | 87 | cout << "Disconnected." << endl; |
| 88 | 88 | ||
| 89 | return 0; | 89 | return 0; |
| 90 | } | 90 | } |
| 91 | 91 | ||
| 92 | // The proper procedure when creating and running a subscriber is: | 92 | // The proper procedure when creating and running a subscriber is: |
| @@ -96,155 +96,155 @@ int main(int argc, char* argv[]) · 3 unmodified lines | |||
| 96 | // - Subscribe | 96 | // - Subscribe |
| 97 | void RunSubscriber(string hostname, uint16_t port) | 97 | void RunSubscriber(string hostname, uint16_t port) |
| 98 | { | 98 | { |
| 99 | // The connector is declared here because it | 99 | // The connector is declared here because it |
| 100 | // is only needed for the initial connection | 100 | // is only needed for the initial connection |
| 101 | SubscriberConnector connector; | 101 | SubscriberConnector connector; |
| 102 | 102 | ||
| 103 | // Set up helper objects | 103 | // Set up helper objects |
| 104 | connector = CreateSubscriberConnector(hostname, port); | 104 | connector = CreateSubscriberConnector(hostname, port); |
| 105 | Info = CreateSubscriptionInfo(); | 105 | Info = CreateSubscriptionInfo(); |
| 106 | 106 | ||
| 107 | // Register callbacks | 107 | // Register callbacks |
| 108 | Subscriber.RegisterStatusMessageCallback(&DisplayStatusMessage); | 108 | Subscriber.RegisterStatusMessageCallback(&DisplayStatusMessage); |
| 109 | Subscriber.RegisterErrorMessageCallback(&DisplayErrorMessage); | 109 | Subscriber.RegisterErrorMessageCallback(&DisplayErrorMessage); |
| 110 | 110 | ||
| 111 | cout << endl << "Connecting to " << hostname << ":" << port << "..." << endl << endl; | 111 | cout << endl << "Connecting to " << hostname << ":" << port << "..." << endl << endl; |
| 112 | 112 | ||
| 113 | // Connect and subscribe to publisher | 113 | // Connect and subscribe to publisher |
| 114 | if (connector.Connect(Subscriber)) | 114 | if (connector.Connect(Subscriber)) |
| 115 | { | 115 | { |
| 116 | cout << "Connected! Subscribing to data..." << endl << endl; | 116 | cout << "Connected! Subscribing to data..." << endl << endl; |
| 117 | Subscriber.Subscribe(Info); | 117 | Subscriber.Subscribe(Info); |
| 118 | } | 118 | } |
| 119 | else | 119 | else |
| 120 | { | 120 | { |
| 121 | cout << "Connection attempts exceeded. Press enter to exit." << endl; | 121 | cout << "Connection attempts exceeded. Press enter to exit." << endl; |
| 122 | } | 122 | } |
| 123 | } | 123 | } |
| 124 | 124 | ||
| 125 | SubscriptionInfo CreateSubscriptionInfo() | 125 | SubscriptionInfo CreateSubscriptionInfo() |
| 126 | { | 126 | { |
| 127 | // SubscriptionInfo is a helper object which allows the user | 127 | // SubscriptionInfo is a helper object which allows the user |
| 128 | // to set up their subscription and reuse subscription settings. | 128 | // to set up their subscription and reuse subscription settings. |
| 129 | SubscriptionInfo info; | 129 | SubscriptionInfo info; |
| 130 | 130 | ||
| 131 | // The following filter expression formats are also available: | 131 | // The following filter expression formats are also available: |
| 132 | // | 132 | // |
| 133 | // - Signal ID list - | 133 | // - Signal ID list - |
| 134 | //info.FilterExpression = "7aaf0a8f-3a4f-4c43-ab43-ed9d1e64a255;" | 134 | //info.FilterExpression = "7aaf0a8f-3a4f-4c43-ab43-ed9d1e64a255;" |
| 135 | // "93673c68-d59d-4926-b7e9-e7678f9f66b4;" | 135 | // "93673c68-d59d-4926-b7e9-e7678f9f66b4;" |
| 136 | // "65ac9cf6-ae33-4ece-91b6-bb79343855d5;" | 136 | // "65ac9cf6-ae33-4ece-91b6-bb79343855d5;" |
| 137 | // "3647f729-d0ed-4f79-85ad-dae2149cd432;" | 137 | // "3647f729-d0ed-4f79-85ad-dae2149cd432;" |
| 138 | // "069c5e29-f78a-46f6-9dff-c92cb4f69371;" | 138 | // "069c5e29-f78a-46f6-9dff-c92cb4f69371;" |
| 139 | // "25355a7b-2a9d-4ef2-99ba-4dd791461379"; | 139 | // "25355a7b-2a9d-4ef2-99ba-4dd791461379"; |
| 140 | // | 140 | // |
| 141 | // - Filter pattern - | 141 | // - Filter pattern - |
| 142 | //info.FilterExpression = "FILTER ActiveMeasurements WHERE ID LIKE 'PPA:*'"; | 142 | //info.FilterExpression = "FILTER ActiveMeasurements WHERE ID LIKE 'PPA:*'"; |
| 143 | //info.FilterExpression = "FILTER ActiveMeasurements WHERE Device = 'SHELBY' AND SignalType = 'FREQ'"; | 143 | //info.FilterExpression = "FILTER ActiveMeasurements WHERE Device = 'SHELBY' AND SignalType = 'FREQ'"; |
| 144 | 144 | ||
| 145 | info.FilterExpression = "PPA:1;PPA:2;PPA:3;PPA:4;PPA:5;PPA:6;PPA:7;PPA:8;PPA:9;PPA:10;PPA:11;PPA:12;PPA:13;PPA:14"; | 145 | info.FilterExpression = "PPA:1;PPA:2;PPA:3;PPA:4;PPA:5;PPA:6;PPA:7;PPA:8;PPA:9;PPA:10;PPA:11;PPA:12;PPA:13;PPA:14"; |
| 146 | info.NewMeasurementsCallback = &ProcessMeasurements; | 146 | info.NewMeasurementsCallback = &ProcessMeasurements; |
| 147 | 147 | ||
| 148 | // To set up a remotely synchronized subscription, set this flag | 148 | // To set up a remotely synchronized subscription, set this flag |
| 149 | // to true and add the framesPerSecond parameter to the | 149 | // to true and add the framesPerSecond parameter to the |
| 150 | // ExtraConnectionStringParameters. Additionally, the following | 150 | // ExtraConnectionStringParameters. Additionally, the following |
| 151 | // example demonstrates the use of some other useful parameters | 151 | // example demonstrates the use of some other useful parameters |
| 152 | // when setting up remotely synchronized subscriptions. | 152 | // when setting up remotely synchronized subscriptions. |
| 153 | // | 153 | // |
| 154 | //info.RemotelySynchronized = true; | 154 | //info.RemotelySynchronized = true; |
| 155 | //info.ExtraConnectionStringParameters = "framesPerSecond=30;timeResolution=10000;downsamplingMethod=Closest"; | 155 | //info.ExtraConnectionStringParameters = "framesPerSecond=30;timeResolution=10000;downsamplingMethod=Closest"; |
| 156 | 156 | ||
| 157 | info.RemotelySynchronized = false; | 157 | info.RemotelySynchronized = false; |
| 158 | info.Throttled = false; | 158 | info.Throttled = false; |
| 159 | 159 | ||
| 160 | info.UdpDataChannel = true; | 160 | info.UdpDataChannel = true; |
| 161 | info.DataChannelLocalPort = 9600; | 161 | info.DataChannelLocalPort = 9600; |
| 162 | 162 | ||
| 163 | info.IncludeTime = true; | 163 | info.IncludeTime = true; |
| 164 | info.LagTime = 3.0; | 164 | info.LagTime = 3.0; |
| 165 | info.LeadTime = 1.0; | 165 | info.LeadTime = 1.0; |
| 166 | info.UseLocalClockAsRealTime = false; | 166 | info.UseLocalClockAsRealTime = false; |
| 167 | info.UseMillisecondResolution = true; | 167 | info.UseMillisecondResolution = true; |
| 168 | 168 | ||
| 169 | return info; | 169 | return info; |
| 170 | } | 170 | } |
| 171 | 171 | ||
| 172 | SubscriberConnector CreateSubscriberConnector(string hostname, uint16_t port) | 172 | SubscriberConnector CreateSubscriberConnector(string hostname, uint16_t port) |
| 173 | { | 173 | { |
| 174 | // SubscriberConnector is another helper object which allows the | 174 | // SubscriberConnector is another helper object which allows the |
| 175 | // user to modify settings for auto-reconnects and retry cycles. | 175 | // user to modify settings for auto-reconnects and retry cycles. |
| 176 | SubscriberConnector connector; | 176 | SubscriberConnector connector; |
| 177 | 177 | ||
| 178 | connector.RegisterErrorMessageCallback(&DisplayErrorMessage); | 178 | connector.RegisterErrorMessageCallback(&DisplayErrorMessage); |
| 179 | connector.RegisterReconnectCallback(&Resubscribe); | 179 | connector.RegisterReconnectCallback(&Resubscribe); |
| 180 | 180 | ||
| 181 | connector.SetHostname(hostname); | 181 | connector.SetHostname(hostname); |
| 182 | connector.SetPort(port); | 182 | connector.SetPort(port); |
| 183 | connector.SetMaxRetries(5); | 183 | connector.SetMaxRetries(5); |
| 184 | connector.SetRetryInterval(1500); | 184 | connector.SetRetryInterval(1500); |
| 185 | connector.SetAutoReconnect(true); | 185 | connector.SetAutoReconnect(true); |
| 186 | 186 | ||
| 187 | return connector; | 187 | return connector; |
| 188 | } | 188 | } |
| 189 | 189 | ||
| 190 | // Callback which is called when the subscriber has | 190 | // Callback which is called when the subscriber has |
| 191 | // received a new packet of measurements from the publisher. | 191 | // received a new packet of measurements from the publisher. |
| 192 | void ProcessMeasurements(DataSubscriber* source, const vector<MeasurementPtr>& newMeasurements) | 192 | void ProcessMeasurements(DataSubscriber* source, const vector<MeasurementPtr>& newMeasurements) |
| 193 | { | 193 | { |
| 194 | const string TimestampFormat = "%Y-%m-%d %H:%M:%S.%f"; | 194 | const string TimestampFormat = "%Y-%m-%d %H:%M:%S.%f"; |
| 195 | const size_t MaxTimestampSize = 80; | 195 | const size_t MaxTimestampSize = 80; |
| 196 | 196 | ||
| 197 | static int processCount = 0; | 197 | static int processCount = 0; |
| 198 | size_t i; | 198 | size_t i; |
| 199 | 199 | ||
| 200 | char timestamp[MaxTimestampSize]; | 200 | char timestamp[MaxTimestampSize]; |
| 201 | 201 | ||
| 202 | // Only display messages every five | 202 | // Only display messages every five |
| 203 | // seconds (assuming 30 calls per second). | 203 | // seconds (assuming 30 calls per second). |
| 204 | if (processCount % 150 == 0) | 204 | if (processCount % 150 == 0) |
| 205 | { | 205 | { |
| 206 | cout << source->GetTotalMeasurementsReceived() << " measurements received so far..." << endl; | 206 | cout << source->GetTotalMeasurementsReceived() << " measurements received so far..." << endl; |
| 207 | 207 | ||
| 208 | if (!newMeasurements.empty()) | 208 | if (!newMeasurements.empty()) |
| 209 | { | 209 | { |
| 210 | if (TicksToString(timestamp, MaxTimestampSize, TimestampFormat, newMeasurements[0]->Timestamp)) | 210 | if (TicksToString(timestamp, MaxTimestampSize, TimestampFormat, newMeasurements[0]->Timestamp)) |
| 211 | cout << "Timestamp: " << string(timestamp) << endl; | 211 | cout << "Timestamp: " << string(timestamp) << endl; |
| 212 | 212 | ||
| 213 | cout << "Point\tValue" << endl; | 213 | cout << "Point\tValue" << endl; |
| 214 | 214 | ||
| 215 | for (i = 0; i < newMeasurements.size(); ++i) | 215 | for (i = 0; i < newMeasurements.size(); ++i) |
| 216 | cout << newMeasurements[i]->ID << '\t' << newMeasurements[i]->Value << endl; | 216 | cout << newMeasurements[i]->ID << '\t' << newMeasurements[i]->Value << endl; |
| 217 | 217 | ||
| 218 | cout << endl; | 218 | cout << endl; |
| 219 | } | 219 | } |
| 220 | } | 220 | } |
| 221 | 221 | ||
| 222 | ++processCount; | 222 | ++processCount; |
| 223 | } | 223 | } |
| 224 | 224 | ||
| 225 | // Callback that is called when the subscriber auto-reconnects. | 225 | // Callback that is called when the subscriber auto-reconnects. |
| 226 | void Resubscribe(DataSubscriber* source) | 226 | void Resubscribe(DataSubscriber* source) |
| 227 | { | 227 | { |
| 228 | if (source->IsConnected()) | 228 | if (source->IsConnected()) |
| 229 | { | 229 | { |
| 230 | cout << "Reconnected! Subscribing to data..." << endl << endl; | 230 | cout << "Reconnected! Subscribing to data..." << endl << endl; |
| 231 | source->Subscribe(Info); | 231 | source->Subscribe(Info); |
| 232 | } | 232 | } |
| 233 | else | 233 | else |
| 234 | { | 234 | { |
| 235 | source->Disconnect(); | 235 | source->Disconnect(); |
| 236 | cout << "Connection retry attempts exceeded. Press enter to exit." << endl; | 236 | cout << "Connection retry attempts exceeded. Press enter to exit." << endl; |
| 237 | } | 237 | } |
| 238 | } | 238 | } |
| 239 | 239 | ||
| 240 | // Callback which is called to display status messages from the subscriber. | 240 | // Callback which is called to display status messages from the subscriber. |
| 241 | void DisplayStatusMessage(DataSubscriber* source, const string& message) | 241 | void DisplayStatusMessage(DataSubscriber* source, const string& message) |
| 242 | { | 242 | { |
| 243 | cout << message << endl << endl; | 243 | cout << message << endl << endl; |
| 244 | } | 244 | } |
| 245 | 245 | ||
| 246 | // Callback which is called to display error messages from the connector and subscriber. | 246 | // Callback which is called to display error messages from the connector and subscriber. |
| 247 | void DisplayErrorMessage(DataSubscriber* source, const string& message) | 247 | void DisplayErrorMessage(DataSubscriber* source, const string& message) |
| 248 | { | 248 | { |
| 249 | cerr << message << endl << endl; | 249 | cerr << message << endl << endl; |
| 250 | } | 250 | } |