/// <summary>
/// Query for latest event of the given node and
/// given OPC UA server from the given time and date
/// </summary>
/// <param name="endTime">Time to start from querying in the past</param>
/// <param name="appUri">The OPC UA server application Uri</param>
/// <param name="nodeId">The node id in the OPC UA server namespace</param>
public async Task <double> GetLatestQuery(DateTime endTime, string appUri, string nodeId)
{
try
{
Stopwatch stopwatch = new Stopwatch();
stopwatch.Start();
Task <IEnumerable <IEvent> > lastTask = GetLatestEvent(endTime, appUri, nodeId);
IEnumerable <IEvent> lastEvent = await lastTask;
stopwatch.Stop();
RDXTrace.TraceInformation("GetLatestQuery took {0} ms", stopwatch.ElapsedMilliseconds);
double last;
try
{
last = GetValueOfProperty <double>(lastEvent.First <IEvent>(), OpcMonitoredItemValue);
}
catch
{
last = GetValueOfProperty <long>(lastEvent.First <IEvent>(), OpcMonitoredItemValue);
}
return(last);
}
catch (Exception e)
{
RDXTrace.TraceError("GetLatestQuery Exception {0}", e.Message);
return(0);
}
}
/// <summary>
/// Query to subtract the oldest value of a OPC UA node
/// from the newest value in the search span
/// </summary>
/// <param name="searchSpan">Date and time span for the query</param>
/// <param name="appUri">The OPC UA server application Uri</param>
/// <param name="nodeId">The node id in the OPC UA server namespace</param>
/// <returns>The difference</returns>
public async Task <double> DiffQuery(DateTimeRange searchSpan, string appUri, string nodeId)
{
try
{
PredicateStringExpression expression = new PredicateStringExpression(
String.Format(OpcServerNodePredicate, appUri, nodeId));
BaseLimitClause firstMember = new TopLimitClause(1,
new[]
{
new SortClause(new BuiltInPropertyReferenceExpression(BuiltInProperty.Timestamp),
SortOrderType.Asc)
});
BaseLimitClause lastMember = new TopLimitClause(1,
new[]
{
new SortClause(new BuiltInPropertyReferenceExpression(BuiltInProperty.Timestamp),
SortOrderType.Desc)
});
Stopwatch stopwatch = new Stopwatch();
stopwatch.Start();
Task <IEnumerable <IEvent> > firstTask = RDXQueryClient.GetEventsAsync(
searchSpan,
expression,
firstMember,
_cancellationToken);
Task <IEnumerable <IEvent> > lastTask = RDXQueryClient.GetEventsAsync(
searchSpan,
expression,
lastMember,
_cancellationToken);
await Task.WhenAll(new Task[] { firstTask, lastTask });
IEnumerable <IEvent> firstEvent = firstTask.Result;
IEnumerable <IEvent> lastEvent = lastTask.Result;
stopwatch.Stop();
RDXTrace.TraceInformation("DiffQuery queries took {0} ms", stopwatch.ElapsedMilliseconds);
long first = GetValueOfProperty <long>(firstEvent.First <IEvent>(), OpcMonitoredItemValue);
long last = GetValueOfProperty <long>(lastEvent.First <IEvent>(), OpcMonitoredItemValue);
return(last - first);
}
catch (Exception e)
{
RDXTrace.TraceError("DiffQuery Exception {0}", e.Message);
return(0);
}
}
/// <summary>
/// Start the topology worker threads
/// </summary>
public void StartWorker(CancellationToken token)
{
try
{
// create a worker thread for each aggregation task
ContosoTopologyNode root = _topology.GetRootNode();
for (int aggregateIndex = 0; aggregateIndex < root.Aggregations.Count; aggregateIndex++)
{
// need a local copy of aggregateIndex to asynchronously start worker properly
int workerIndex = aggregateIndex;
_workers.Add(Task.Run(async() => await Worker(workerIndex, token)));
}
}
catch (Exception e)
{
RDXTrace.TraceError("Start aggregation workers failed: {0}:", e.Message);
}
}
/// <summary>
/// Query for latest event of the given node and given OPC UA server
/// from the given time and date to find the display name for the nodeId.
/// </summary>
/// <param name="endTime">Time to start from querying in the past</param>
/// <param name="appUri">The OPC UA server application Uri</param>
/// <param name="nodeId">The node id in the OPC UA server namespace</param>
/// <returns>The DisplayName of the nodeId</returns>
public async Task <string> QueryDisplayName(DateTime endTime, string appUri, string nodeId)
{
try
{
Stopwatch stopwatch = new Stopwatch();
stopwatch.Start();
Task <IEnumerable <IEvent> > lastTask = GetLatestEvent(endTime, appUri, nodeId);
IEnumerable <IEvent> lastEvent = await lastTask;
stopwatch.Stop();
string name = GetValueOfProperty <string>(lastEvent.First <IEvent>(), OpcDisplayName);
RDXTrace.TraceInformation("GetDisplayName took {0} ms", stopwatch.ElapsedMilliseconds);
return(name);
}
catch (Exception e)
{
RDXTrace.TraceError("GetDisplayName Exception {0}", e.Message);
}
return(nodeId);
}
/// <summary>
/// Query for aggregation of count, min, max, sum and average for all active
/// nodes of the given OPC UA server in the given search span as time histogram
/// with interval
/// </summary>
/// <param name="searchSpan">Date and time span for the query</param>
/// <param name="appUri">The OPC UA server application Uri</param>
/// <param name="interval">Interval for Date Time Histogram</param>
/// <returns>The aggregated nodes</returns>
public async Task <AggregateResult> GetAllAggregatedNodesWithInterval(DateTimeRange searchSpan, string appUri, string nodeId, TimeSpan interval)
{
try
{
string id = TimeSpanToId(interval);
Stopwatch stopwatch = new Stopwatch();
stopwatch.Start();
PredicateStringExpression predicate = new PredicateStringExpression(
String.Format(OpcServerNodePredicate, appUri, nodeId));
Aggregate aggregate = new Aggregate(
Expression.UniqueValues(OpcMonitoredItemId, PropertyType.String, opcMaxMonitoredItemId),
new Aggregate(Expression.DateHistogram(BuiltInProperty.Timestamp, IntervalSize.FromId(id)),
new Aggregate(
Expression.Count(),
Expression.Min(OpcMonitoredItemValue, PropertyType.Double),
Expression.Max(OpcMonitoredItemValue, PropertyType.Double),
Expression.Average(OpcMonitoredItemValue, PropertyType.Double),
Expression.Sum(OpcMonitoredItemValue, PropertyType.Double)
)));
AggregatesResult aggregateResults = await RDXQueryClient.GetAggregatesAsync(
searchSpan,
predicate,
new[] { aggregate },
_cancellationToken);
// Since there was 1 top level aggregate in request, there is 1 aggregate result.
AggregateResult aggregateResult = aggregateResults[0];
stopwatch.Stop();
RDXTrace.TraceInformation("GetAllAggregatedNodes query took {0} ms", stopwatch.ElapsedMilliseconds);
return(aggregateResult);
}
catch (Exception e)
{
RDXTrace.TraceError("GetAllAggregatedNodes: Exception {0}", e.Message);
return(null);
}
}
/// <summary>
/// Query for aggregation of count, min, max, sum and average for all active
/// nodes of all OPC UA servers in the given search span
/// </summary>
/// <param name="searchSpan">Date and time span for the query</param>
/// <returns>The aggregated servers and nodes</returns>
public async Task <AggregateResult> GetAllAggregatedStationsAndNodes(DateTimeRange searchSpan)
{
try
{
Stopwatch stopwatch = new Stopwatch();
stopwatch.Start();
Aggregate aggregate = new Aggregate(
Expression.UniqueValues(OpcServerUri, PropertyType.String, opcMaxServerUri),
new Aggregate(
Expression.UniqueValues(OpcMonitoredItemId, PropertyType.String, opcMaxMonitoredItemId),
new Aggregate(
Expression.Count(),
Expression.Min(OpcMonitoredItemValue, PropertyType.Double),
Expression.Max(OpcMonitoredItemValue, PropertyType.Double),
Expression.Average(OpcMonitoredItemValue, PropertyType.Double),
Expression.Sum(OpcMonitoredItemValue, PropertyType.Double)
)
)
);
AggregatesResult aggregateResults = await RDXQueryClient.GetAggregatesAsync(
searchSpan,
null,
new[] { aggregate },
_cancellationToken);
// Since there was 1 top level aggregate in request, there is 1 aggregate result.
_getAllAggregatedStationsAndNodesResult = aggregateResults[0];
stopwatch.Stop();
RDXTrace.TraceInformation("GetAllAggregatedStationsAndNodes query took {0} ms", stopwatch.ElapsedMilliseconds);
return(_getAllAggregatedStationsAndNodesResult);
}
catch (Exception e)
{
RDXTrace.TraceError("GetAllAggregatedStationsAndNodes: Exception {0}", e.Message);
return(null);
}
}
/// <summary>
/// Query for aggregation of a given measure for the
/// given node and given OPC UA server in the given search span
/// </summary>
/// <param name="searchSpan">Date and time span for the query</param>
/// <param name="appUri">The OPC UA server application Uri</param>
/// <param name="nodeId">The node id in the OPC UA server namespace</param>
/// <param name="measure"></param>
public async Task <double> GetAggregatedNode(DateTimeRange searchSpan, string appUri, string nodeId, AggregateExpression measure)
{
try
{
Stopwatch stopwatch = new Stopwatch();
stopwatch.Start();
PredicateStringExpression predicate = new PredicateStringExpression(
String.Format(OpcServerNodePredicate, appUri, nodeId));
Aggregate aggregate = new Aggregate(
measures: new AggregateExpression[] { measure }
);
AggregatesResult aggregateResults = await RDXQueryClient.GetAggregatesAsync(
searchSpan,
predicate,
new[] { aggregate },
_cancellationToken);
// Since there was 1 top level aggregate in request, there is 1 aggregate result.
AggregateResult aggregateResult = aggregateResults[0];
stopwatch.Stop();
RDXTrace.TraceInformation("AggregateQuery query took {0} ms", stopwatch.ElapsedMilliseconds);
if (aggregateResult.Measures == null)
{
return(0.00);
}
return((double)aggregateResult.Measures[0]);
}
catch (Exception e)
{
RDXTrace.TraceError("AggregateQuery: Exception {0}", e.Message);
return(0);
}
}
/// <summary>
/// Worker to query one aggregate of a topology
/// </summary>
/// <param name="aggregateIndex">The aggregation view to update by the worker</param>
/// <param name="token">CancellationToken</param>
public async Task Worker(int aggregateIndex, CancellationToken token)
{
RDXOpcUaQueries opcUaQueries = new RDXOpcUaQueries(token);
RDXOeeKpiQueries oeeKpiQueries = new RDXOeeKpiQueries(opcUaQueries, token);
RDXTrace.TraceInformation("RDX Worker {0} started", aggregateIndex);
// give app some time to start before updating queries
await Task.Delay(10000 *(aggregateIndex + 1));
while (!token.IsCancellationRequested)
{
Stopwatch stopWatch = new Stopwatch();
DateTime nextUpdate = DateTime.MaxValue;
bool resetStartDelayed = false;
stopWatch.Start();
Interlocked.Increment(ref _busyWorkers);
// the station and node list is updated, other workers are delayed
while (_workerStartDelayed != 0)
{
RDXTrace.TraceInformation("RDX Worker {0} delayed", aggregateIndex);
await Task.Delay(1000);
}
try
{
List <Task> tasks = new List <Task>();
ContosoTopologyNode rootNode = _topology.GetRootNode();
ContosoAggregatedOeeKpiHistogram aggregatedTimeSpan = rootNode[aggregateIndex];
DateTimeRange searchSpan = RDXUtils.TotalSearchRangeFromNow(aggregatedTimeSpan);
RDXTrace.TraceInformation("RDX Worker {0} updating Range {1} to {2}",
aggregateIndex, searchSpan.From, searchSpan.To);
// calc next update. To time is already rounded for update time span.
nextUpdate = searchSpan.To + rootNode[aggregateIndex].UpdateTimeSpan;
// query all stations in topology and find all active servers in timespan
Task <StringDimensionResult> aggServerTask = opcUaQueries.AggregateServers(searchSpan);
// always get an aggregate of all activity for the latest interval, use it as a cache
TimeSpan intervalTimeSpan = aggregatedTimeSpan[0].IntervalTimeSpan;
DateTimeRange aggregateSpan = RDXUtils.CalcAggregationRange(aggregatedTimeSpan, searchSpan.To);
RDXCachedAggregatedQuery fullQuery = new RDXCachedAggregatedQuery(opcUaQueries);
Task aggServerAndNodesTask = fullQuery.Execute(aggregateSpan);
// wait for all outstanding aggregates
tasks.Add(aggServerTask);
tasks.Add(aggServerAndNodesTask);
await RDXUtils.WhenAllTasks("Aggregates", tasks, stopWatch);
List <string> topologyStations = _topology.GetAllChildren(_tree.TopologyRoot.Key, typeof(Station));
List <string> opcUaServers = await aggServerTask;
// intersect list of active servers and schedule all queries
tasks.Clear();
List <string> opcUaServersToQuery = opcUaServers.Intersect(topologyStations, StringComparer.InvariantCultureIgnoreCase).ToList();
await oeeKpiQueries.ScheduleAllOeeKpiQueries(searchSpan, _topology, fullQuery, opcUaServersToQuery, tasks, aggregateIndex);
// wait for all outstanding queries
await RDXUtils.WhenAllTasks("Queries", tasks, stopWatch);
// Update the topology Oee and KPI values
_topology.UpdateAllKPIAndOEEValues(aggregateIndex);
// one worker issues the Browser update
if (aggregatedTimeSpan.UpdateBrowser)
{
// Push updates to dashboard
BrowserUpdate();
RDXTrace.TraceInformation("BrowserUpdate finished after {0}ms",
stopWatch.ElapsedMilliseconds);
}
// add new stations and nodes to topology
if (aggregatedTimeSpan.UpdateTopology)
{
// delay other workers
Interlocked.Exchange(ref _workerStartDelayed, 1);
resetStartDelayed = true;
// only add stations and nodes if no other worker is busy yet
if (Interlocked.Increment(ref _busyWorkers) == 2)
{
AddNewServers(fullQuery, topologyStations);
await AddNewNodes(fullQuery, topologyStations);
RDXTrace.TraceInformation("Add New Server and Nodes finished after {0}ms",
stopWatch.ElapsedMilliseconds);
}
}
}
catch (Exception e)
{
RDXTrace.TraceError("Exception {0} in Worker after {1}ms",
e.Message, stopWatch.ElapsedMilliseconds);
}
finally
{
Interlocked.Decrement(ref _busyWorkers);
if (resetStartDelayed)
{
Interlocked.Decrement(ref _busyWorkers);
Interlocked.Exchange(ref _workerStartDelayed, 0);
}
}
RDXTrace.TraceInformation("RDX Worker {0} schedule next update for {1}",
aggregateIndex, nextUpdate);
TimeSpan delay = nextUpdate.Subtract(DateTime.UtcNow);
if (delay.TotalMilliseconds > 0)
{
await Task.Delay(delay, token);
}
}
}
/// <summary>
/// Create the singleton instance for the RDX C# client SDK
/// Deletes singleton if the access to the specified environment fails
/// to prevent subsequent access of worker threads
/// </summary>
public static async void Create()
{
while (true)
{
RDXTrace.TraceInformation("Start RDX Query Client");
try
{
ServicePointManager.DefaultConnectionLimit = 1000;
CommonLogger.SetWriter(TraceLogWriter.Instance);
// Authenticate with the RDX service, depending on configuration one option is used
// to create the OAuth2 bearer tokens
IClientAuthenticator clientAuthenticator;
string tenantId = ConfigurationProvider.GetConfigurationSettingValue(rdxAuthenticationTenantId);
IccString clientCertificateThumbprint = new IccString(ConfigurationProvider.GetConfigurationSettingValue(rdxAuthenticationClientCertificateThumbprint));
if (clientCertificateThumbprint.IsNullOrWhiteSpace())
{
string clientId = ConfigurationProvider.GetConfigurationSettingValue(rdxAuthenticationClientId);
string clientSecret = ConfigurationProvider.GetConfigurationSettingValue(rdxAuthenticationClientSecret);
if (String.IsNullOrWhiteSpace(clientSecret))
{
Uri redirectUri = new Uri(ConfigurationProvider.GetConfigurationSettingValue(rdxAuthenticationRedirectUri));
clientAuthenticator = new UserClientAuthenticator(tenantId, clientId, redirectUri, BaseClientAuthenticator.AzureTimeSeriesResource);
}
else
{
clientAuthenticator = new ClientCredentialAuthenticator(tenantId, clientId, clientSecret, BaseClientAuthenticator.AzureTimeSeriesResource);
}
}
else
{
string applicationClientId = ConfigurationProvider.GetConfigurationSettingValue(rdxAuthenticationClientApplicationId);
clientAuthenticator = new ApplicationCertificateClientAuthenticator(applicationClientId, clientCertificateThumbprint, tenantId, BaseClientAuthenticator.AzureTimeSeriesResource);
}
// Create the RDX client with authenticator and DNS resolver
_rdxDNSName = ConfigurationProvider.GetConfigurationSettingValue(rdxDnsName);
IccString rdxIccDnsName = new IccString("api." + _rdxDNSName);
string solutionName = ConfigurationProvider.GetConfigurationSettingValue(rdxApplicationName);
_rdxGlobalQueryClient = new RdxGlobalQueryClient(rdxIccDnsName, solutionName, clientAuthenticator);
// Test if our environment exists and is accessible
_rdxEnvironmentId = new IccString(ConfigurationProvider.GetConfigurationSettingValue(rdxEnvironmentId));
GetEnvironmentsOutput environments = await GetEnvironmentsAsync(CancellationToken.None);
Trace.TraceInformation("Got {0} environments: ", environments.Environments.Count);
bool foundEnvironment = false;
foreach (var env in environments.Environments)
{
Trace.TraceInformation(" {0} {1}", env.EnvironmentId, env.DisplayName);
if (env.EnvironmentId == _rdxEnvironmentId)
{
foundEnvironment = true;
_rdxEnvironmentName = env.DisplayName;
_rdxEnvironmentFqdn = env.EnvironmentFqdn;
break;
}
}
if (!foundEnvironment)
{
throw new Exception(String.Format("RDX Environment {0} not found.", _rdxEnvironmentId.ToString()));
}
_rdxEnvironmentQueryClient = new RdxEnvironmentQueryClient(
_rdxEnvironmentFqdn,
solutionName,
clientAuthenticator);
Trace.TraceInformation("..... RDXQueryClient started .....");
return;
}
catch (Exception e)
{
RDXTrace.TraceError("RDX CreateQueryClient failed: {0}", e.ExceptionToString());
_rdxGlobalQueryClient = null;
_rdxEnvironmentQueryClient = null;
}
RDXTrace.TraceError("Fatal: RDX environment not found. Retry in 60s.");
await Task.Delay(60000);
}
}