public override DataDescription[] ProcessInputDeclaration(Rule flow, DataDescription[] inputData)
{
var id = flow.Source?.ComponentRegistrationId?.Split('.').FirstOrDefault();
if (id != null)
{
ORM <OPCEvent> orm = new ORM <OPCEvent>();
var e = orm.Fetch(id);
if (e != null)
{
List <DataDescription> output = new List <DataDescription>();
foreach (var ev in e.EventValues)
{
Type tagType = TagValueUtils.GetTagValueType(TypeUtilities.FindTypeByFullName(ev.TypeName));
output.Add(new DataDescription(tagType, ev.Name));
output.Add(new DataDescription(tagType, "Last " + ev.Name));
}
output.Add(new DataDescription(typeof(DateTime), "LastWorkflowRun"));
output.AddRange(base.ProcessInputDeclaration(flow, inputData));
return(output.ToArray());
}
}
return(base.ProcessInputDeclaration(flow, inputData));
}
public ResultData Run(StepStartData data)
{
object value = data.Data[VALUE_INPUT];
OPCTag tag;
string serverUrl;
if (chooseTagAtRuntime)
{
string tagPath = data.Data[TAG_INPUT] as string;
serverUrl = data.Data[SERVER_URL_INPUT] as string;
if (string.IsNullOrEmpty(tagPath))
{
throw new Exception("No tag specified");
}
if (string.IsNullOrEmpty(serverUrl))
{
throw new Exception("No server URL specified");
}
tag = EntityCache <OPCTag> .GetCache().AllEntities.FirstOrDefault(x => x.Path == tagPath && x.ServerUrl == serverUrl);
if (tag == null)
{
throw new Exception($"No tag found at '{tagPath}' on server '{serverUrl}'");
}
}
else
{
tag = EntityCache <OPCTag> .GetCache().GetById(tagId);
if (tag == null)
{
throw new Exception($"Tag '{tagId}' not found");
}
serverUrl = tag.ServerUrl;
}
BaseTagValue tagValue = TagValueUtils.GetTagWithValue(TypeUtilities.FindTypeByFullName(tag.TypeName), value);
tagValue.Path = tag.Path;
OPCServerFolderBehaviorData folderExt = EntityCache <OPCServerFolderBehaviorData> .GetCache().AllEntities.FirstOrDefault(s => s.Url == serverUrl);
Folder folder = folderExt?.GetEntity() as Folder;
if (folder == null)
{
throw new Exception($"No server folder configured for URL '{serverUrl}'.");
}
OPCEngine.SetTagValues(serverUrl, folderExt.AgentId, new BaseTagValue[] { tagValue });
return(new ResultData(PATH_DONE, new KeyValuePair <string, object>[] { }));
}
public DataDescription[] GetSubItems()
{
Log.Debug($"GetSubItems called on path {Path}");
if (Path == null || Path == OPCEventFlowBehavior.SNAPSHOT_DATA) // If we're at the top, just return all server names:
{
return(opcServerOrm.Fetch()
.Select(x => new DataDescription(typeof(OPCDataProvider), x.GetEntity().EntityName, false)
{
NestedVariableName = x.GetEntity().EntityName
}).ToArray());
}
string[] pathSplit = Path.Split(new char[] { '.' }, 2); // {Server Name}.{remaining.tag.path}
DynamicORM orm = new DynamicORM();
HashSet <string> nextPaths = new HashSet <string>();
List <DataDescription> dds = new List <DataDescription>();
foreach (string key in OPCEngine.mostRecentValues.Keys) // keys are like "<guid>|Channel1.Device1.Tag1"
{
string[] keySplit = key.Split('|');
string eventId = keySplit[0];
string keyTagPath = keySplit[1];
OPCEvent ev = orm.Fetch(typeof(OPCEvent), eventId) as OPCEvent;
if (ev == null)
{
throw new Exception("OPCEvent not found with id " + eventId);
}
string serverName = (orm.Fetch(typeof(Folder), ev.EntityFolderID) as Folder)?.EntityName;
if (string.IsNullOrEmpty(serverName))
{
throw new Exception("Server name not found");
}
if (serverName != pathSplit[0])
{
continue;
}
if (pathSplit.Length == 1) // This is the node for the server, so include everything under it:
{
nextPaths.Add(keyTagPath.Split('.')[0]);
}
else
{
// If "Channel1.Device1.Tag1" starts with "Channel1.Device1", for example:
if (keyTagPath.StartsWith(pathSplit[1]))
{
string remainingPath = keyTagPath.Substring(pathSplit[1].Length + 1); // "Tag1"
string[] splitRemaining = remainingPath.Split('.');
if (splitRemaining.Length == 1) // This is a tag, so find its type
{
BaseTagValue tagValue;
if (!OPCEngine.mostRecentValues.TryGetValue(key, out tagValue))
{
throw new Exception("Could not find type for tag " + key);
}
if (dds.Any(d => d.Name == splitRemaining[0])) // Don't create duplicates - most recent value will be used.
{
continue;
}
DataDescription dd = TagValueUtils.GetDataDescriptionFromTagType(tagValue.GetType(), splitRemaining[0]);
dd.NestedVariableName = $"{this.Path}.{splitRemaining[0]}";
dds.Add(dd);
}
else
{
nextPaths.Add(splitRemaining[0]);
}
}
}
}
foreach (string nextPath in nextPaths)
{
dds.Add(new DataDescription(typeof(OPCDataProvider), nextPath, false)
{
NestedVariableName = $"{this.Path}.{nextPath}"
});
}
return(dds.ToArray());
}
public object GetValue(string name)
{
Log.Debug($"GetValue called on path {Path}");
if (Path == null || !Path.Contains("."))
{
// If at the top, or at a server, the next part can't be a tag:
string nextPath = (Path == null) ? name : $"{Path}.{name}";
return(new OPCDataProvider {
Path = nextPath, Snapshot = this.Snapshot
});
}
string[] pathSplit = Path.Split(new char[] { '.' }, 2); // {Server Name}.{remaining.tag.path}
Folder folder = opcServerOrm.Fetch().Select(ext => ext.GetEntity()).FirstOrDefault(f => f.EntityName == pathSplit[0]) as Folder;
if (folder == null)
{
throw new Exception($"Could not find server named {pathSplit[0]}");
}
string[] eventIds = FolderService.GetFolderEntities <OPCEvent>(folder.FolderID).Select(e => e.Id).ToArray();
BaseTagValue mostRecentTag = null;
IDictionary <string, BaseTagValue> sourceDict = ((Snapshot as IDictionary <string, BaseTagValue>) ?? OPCEngine.mostRecentValues);
foreach (string eventId in eventIds)
{
string key = $"{eventId}|{pathSplit[1]}.{name}";
BaseTagValue tag;
if (sourceDict.TryGetValue(key, out tag))
{
if (mostRecentTag == null || mostRecentTag.TimeStamp < tag.TimeStamp)
{
mostRecentTag = tag;
}
}
}
if (mostRecentTag != null)
{
return(TagValueUtils.GetObjectValueFromTag(mostRecentTag));
}
// No current value found, so check folders to see whether this is a folder or a tag:
Folder tagDataFolder = folder.GetSubFolder().FirstOrDefault(x => x.EntityName == "Tag Data");
if (tagDataFolder == null)
{
throw new Exception("Tag data folder not found");
}
string[] parts = pathSplit[1].Split('.');
Folder currentFolder = tagDataFolder;
for (int i = 0; i < parts.Length; ++i)
{ // descend for each part, arriving at the folder which should contain the named entity
Folder nextFolder = currentFolder.GetSubFolder().FirstOrDefault(x => x.EntityName == parts[i]);
if (nextFolder == null)
{
throw new Exception($"Folder '{parts[i]}' not found in folder '{currentFolder?.EntityName}'.");
}
currentFolder = nextFolder;
}
Folder namedFolder = FolderService.GetFolderEntities <Folder>(currentFolder.FolderID).FirstOrDefault(x => x.EntityName == name);
if (namedFolder != null)
{
return new OPCDataProvider {
Path = $"{this.Path}.{name}", Snapshot = this.Snapshot
}
}
;
OPCTag namedTag = FolderService.GetFolderEntities <OPCTag>(currentFolder.FolderID).FirstOrDefault(x => x.EntityName == name);
if (namedTag != null)
{
throw new Exception($"Tag '{name}' has no known value");
}
else
{
throw new Exception($"No tag or folder '{name}' found in '{currentFolder.EntityName}'");
}
}
private void SetValues(string opcServerUrl, string eventId, BaseTagValueWrapper valuesWrapper)
{
BaseTagValue[] values = valuesWrapper.Values;
using (UserContextHolder.Register(new SystemUserContext()))
{
Folder configFolder = EntityCache <OPCServerFolderBehaviorData> .GetCache().AllEntities.FirstOrDefault(s => s.Url == opcServerUrl)?.GetEntity() as Folder;
if (configFolder == null)
{
return;
}
Array.ForEach(values, tagValue => { LOG.Debug($"Value Change: {tagValue.Path} - {TagValueUtils.GetObjectValueFromTag(tagValue)}"); });
// put values in last cache
foreach (var v in values)
{
string key = eventId + "|" + v.Path;
BaseTagValue priorValue;
OPCEngine.mostRecentValues.TryGetValue(key, out priorValue);
OPCEngine.mostRecentValues[key] = v;
if (priorValue == null)
{
OPCEngine.priorValues[key] = v;
}
else
{
OPCEngine.priorValues[key] = priorValue;
}
}
OPCEvent opcEvent = opcEventOrm.Fetch(eventId);
if (opcEvent == null || opcEvent.Disabled)
{
return;
}
bool runIt = false;
// see if this event is interested in this change
foreach (var v in opcEvent.EventValues)
{
if (values.FirstOrDefault(changedValue => changedValue.Path == v.PathToValue) != null)
{
runIt = true;
break;
}
}
if (runIt)
{
try
{
List <DataPair> inputs = new List <DataPair>();
foreach (var v in opcEvent.EventValues)
{
string key = eventId + "|" + v.PathToValue;
BaseTagValue value = null;
OPCEngine.mostRecentValues.TryGetValue(key, out value);
inputs.Add(new DataPair(v.Name, value));
BaseTagValue priorvalue = null;
OPCEngine.priorValues.TryGetValue(key, out priorvalue);
inputs.Add(new DataPair("Last " + v.Name, priorvalue));
}
inputs.Add(new DataPair("LastWorkflowRun", opcEvent.LastRun));
// check rule to see if it matches
var ruleResult = RuleEngine.RunRule(opcEvent.Rule, inputs.ToArray());
if (ruleResult != null && ruleResult is bool)
{
if (((bool)ruleResult) == true)
{
new Log("OPC").Error("Value Changed And Rule Returned True - running flow");
FlowEngine.Start(FlowEngine.LoadFlowByID(opcEvent.Flow, false, true),
new FlowStateData(inputs.ToArray()));
}
else
{
new Log("OPC").Error("Value Changed But Rule Returned False");
}
}
else
{
new Log("OPC").Error("Value Changed But Rule Returned False");
}
}
catch (Exception except)
{
new Log("OPC").Error(except, "Error running flow from event");
}
}
}
}
