public static void SetTagValues(string opcServerUrl, BaseTagValueWrapper valuesWrapper)
{
lock (GetLockObject(opcServerUrl))
{
OpcDaServer server = GetOrCreateServer(opcServerUrl);
OpcDaGroup group = server.Groups.FirstOrDefault(x => x.Name == "DecisionsWriteGroup");
if (group == null)
{
group = server.AddGroup("DecisionsWriteGroup");
}
BaseTagValue[] values = valuesWrapper.Values;
if (values == null || values.Length == 0)
{
return;
}
List <OpcDaItemDefinition> missing = new List <OpcDaItemDefinition>();
foreach (BaseTagValue value in values)
{
OpcDaItem item = group.Items.FirstOrDefault(x => x.ItemId == value.Path);
if (item == null)
{
missing.Add(new OpcDaItemDefinition {
ItemId = value.Path
});
}
} // ensure that tags are in group
if (missing.Count > 0)
{
OpcDaItemResult[] addResults = group.AddItems(missing);
foreach (OpcDaItemResult result in addResults)
{
if (result.Error.Failed)
{
throw new Exception($"Set tag value failed: could not add tag to group");
}
}
}
List <OpcDaItem> items = new List <OpcDaItem>();
List <object> itemValues = new List <object>();
foreach (BaseTagValue value in values)
{
OpcDaItem item = group.Items.First(x => x.ItemId == value.Path); //throw if missing
items.Add(item);
itemValues.Add(OPCAgentUtils.GetObjectValueFromTag(value));
}
HRESULT[] writeResults = group.Write(items, itemValues.ToArray());
foreach (HRESULT writeResult in writeResults)
{
if (writeResult.Failed)
{
throw new Exception($"Set tag value failed: Error while writing values: {writeResult.ToString()}");
}
}
}
}
private static BaseTagValue[] ConvertToBaseTagValues(OpcDaItemValue[] opcDaValues)
{
List <BaseTagValue> values = new List <BaseTagValue>();
foreach (OpcDaItemValue valueChange in opcDaValues)
{
BaseTagValue value = OPCAgentUtils.GetTagWithValue(valueChange.Item.CanonicalDataType, valueChange.Value);
value.Path = valueChange.Item.ItemId;
value.Quality = new OpcQuality
{
Status = (OpcQualityStatus)valueChange.Quality.Master,
SubStatus = (OpcQualitySubStatus)valueChange.Quality.Status,
Limit = (OpcQualityLimit)valueChange.Quality.Limit
};
value.TimeStamp = valueChange.Timestamp.DateTime; //todo, make sure this is utc
values.Add(value);
}
return(values.ToArray());
}