// Set the publishing mode
// =============================================================================================
Status Subscription::setPublishingMode(
bool publishingEnabled,
const ServiceSettings& serviceSettings)
{
OpcUa_Boolean uaPublishingEnabled = publishingEnabled ? OpcUa_True : OpcUa_False;
UaClientSdk::ServiceSettings uaServiceSettings;
serviceSettings.toSdk(uaServiceSettings);
UaStatus uaStatus = uaSubscription_->setPublishingMode(uaServiceSettings,
uaPublishingEnabled);
Status ret;
ret.fromSdk(uaStatus.statusCode(), "Couldn't set the publishing mode");
return ret;
}
Status Subscription::createSubscription()
{
logger_->debug("Creating the subscription to the server");
Status ret;
UaClientSdk::ServiceSettings serviceSettings;
UaClientSdk::SubscriptionSettings subscriptionSettings;
subscriptionSettings = toSdk(subscriptionSettings_);
UaStatus uaStatus = uaSession_->createSubscription(
serviceSettings,
uaSubscriptionCallback_,
clientSubscriptionHandle_,
subscriptionSettings,
OpcUa_True,
&uaSubscription_);
ret.fromSdk(uaStatus.statusCode(), "Could not create the subscription to the server");
if (ret.isGood())
{
subscriptionState_ = uafc::subscriptionstates::Created;
logger_->debug("The subscription has been successfully created to the server");
}
else
{
subscriptionState_ = uafc::subscriptionstates::Deleted;
ret.addDiagnostic("Subscription creation to the server failed");
logger_->error(ret);
}
return ret;
}
Status Subscription::deleteSubscription()
{
Status ret;
if (uaSession_->isConnected())
{
if (isCreated())
{
logger_->debug("Now deleting subscription %d and thereby deleting all monitored items",
clientSubscriptionHandle_);
UaClientSdk::ServiceSettings serviceSettings;
UaStatus uaStatus = uaSession_->deleteSubscription(serviceSettings, &uaSubscription_);
ret.fromSdk(uaStatus.statusCode(), "Could not delete the subscription");
}
else
{
logger_->debug("No need to delete subscription %d on the server side, as it was " \
"already deleted", clientSubscriptionHandle_);
ret.setGood();
}
}
else
{
ret.setStatus(statuscodes::ConnectionError, "Could not delete the subscription");
}
// now update the persistent requests
MonitoredItemsMap::iterator it = monitoredItemsMap_.begin();
while (it != monitoredItemsMap_.end())
{
// remove the notification buffer according to the kind
if (it->second.settings.kind() == MonitoredItemSettings::Data)
{
database_->createMonitoredDataRequestStore.updateTargetStatus(
it->second.requestHandle,
it->second.targetRank,
Status(statuscodes::SubscriptionError, "The subscription was deleted"));
}
else
{
database_->createMonitoredEventsRequestStore.updateTargetStatus(
it->second.requestHandle,
it->second.targetRank,
Status(statuscodes::SubscriptionError, "The subscription was deleted"));
}
// remove the monitoredItemsMap_ entry
monitoredItemsMap_.erase(it++);
}
// log the result
if (ret.isGood())
{
logger_->debug("The subscription has been deleted successfully");
setSubscriptionState(uafc::subscriptionstates::Deleted);
} else
{
logger_->error(ret);
}
return ret;
}
// Invoke the service synchronously
// =============================================================================================
Status HistoryReadRawModifiedInvocation::invokeSyncSdkService(UaClientSdk::UaSession* uaSession)
{
Status ret;
UaStatus uaStatus = uaSession->historyReadRawModified(
uaServiceSettings_,
uaContext_,
uaNodesToRead_,
uaResults_);
ret.fromSdk(uaStatus.statusCode(), "Synchronous HistoryRead invocation failed");
uint32_t autoReadMore = 0;
uint32_t maxAutoReadMore = this->serviceSettings().maxAutoReadMore;
// do we still have to automatically invoke another read, or are we finished?
bool finished = (maxAutoReadMore == 0);
// if we're not finished already, and the initial request was successful, we
// may need to invoke the history read service again
while ((!finished) && ret.isGood())
{
UaHistoryReadValueIds uaNextNodesToRead;
UaClientSdk::HistoryReadDataResults uaNextResults;
vector<uint32_t> ranks; // the rank numbers of the original request
// loop through the results and append "unfinished" read results to the
// variables for the next read call, as defined above
for (uint32_t i = 0; i < uaResults_.length(); i++)
{
if ( uaResults_[i].m_continuationPoint.length() > 0
&& uaResults_[i].m_status.isGood())
{
// get the rank number for the next call
uint32_t current = uaNextNodesToRead.length();
// increase the size of the continuation points for the next BrowseNext call
uaNextNodesToRead.resize(current + 1);
// store the rank number of the current result
ranks.push_back(i);
uaResults_[i].m_continuationPoint.copyTo(
&uaNextNodesToRead[current].ContinuationPoint);
UaNodeId(uaNodesToRead_[i].NodeId).copyTo(
&uaNextNodesToRead[current].NodeId);
if (!UaQualifiedName(uaNodesToRead_[i].DataEncoding).isNull())
UaQualifiedName(uaNodesToRead_[i].DataEncoding).copyTo(
&uaNextNodesToRead[current].DataEncoding);
if (!UaString(&uaNodesToRead_[i].IndexRange).isNull())
UaString(&uaNodesToRead_[i].IndexRange).copyTo(
&uaNextNodesToRead[current].IndexRange);
}
}
// if necessary, call the historyReadRawModified service again
if (uaNextNodesToRead.length() > 0)
{
// perform the BrowseNext call
UaStatus uaNextStatus = uaSession->historyReadRawModified(
uaServiceSettings_,
uaContext_,
uaNextNodesToRead,
uaNextResults);
ret.fromSdk(uaNextStatus.statusCode(),
"Synchronous HistoryReadRawModified invocation failed");
// we've finished an automatic read call, so increment the counter
autoReadMore++;
// now append the results to the results of the original read call
for (uint32_t iNext = 0; iNext < uaNextResults.length() && ret.isGood(); iNext++)
{
// get the rank number of the original request
uint32_t rank = ranks[iNext];
// increment the autoBrowsedNext
autoReadMorePerTarget_[rank] = autoReadMore;
// update the status
uaResults_[rank].m_status = uaNextResults[iNext].m_status;
if (uaResults_[rank].m_status.isGood())
{
// update the continuation point
uaResults_[rank].m_continuationPoint = uaNextResults[iNext].m_continuationPoint;
// now we want to append the retrieved data values to the existing data
// values
int32_t oldDataLength = uaResults_[rank].m_dataValues.length();
int32_t nextDataLength = uaNextResults[iNext].m_dataValues.length();
// resize the original results, so that it can hold the new results
uaResults_[rank].m_dataValues.resize(oldDataLength + nextDataLength);
// now copy the data from the new results to the original results:
for (uint32_t i=0, j=oldDataLength; i<nextDataLength; i++, j++)
{
UaVariant(uaNextResults[iNext].m_dataValues[i].Value).copyTo(
&uaResults_[rank].m_dataValues[j].Value);
uaResults_[rank].m_dataValues[j].SourceTimestamp \
= uaNextResults[iNext].m_dataValues[i].SourceTimestamp;
uaResults_[rank].m_dataValues[j].ServerTimestamp \
= uaNextResults[iNext].m_dataValues[i].ServerTimestamp;
uaResults_[rank].m_dataValues[j].SourcePicoseconds \
= uaNextResults[iNext].m_dataValues[i].SourcePicoseconds;
uaResults_[rank].m_dataValues[j].ServerPicoseconds \
= uaNextResults[iNext].m_dataValues[i].ServerPicoseconds;
}
// now we want to append the retrieved modification info values to the
// existing modification info values
oldDataLength = uaResults_[rank].m_modificationInformation.length();
nextDataLength = uaNextResults[iNext].m_modificationInformation.length();
// resize the original results, so that it can hold the new results
uaResults_[rank].m_modificationInformation.resize(oldDataLength + nextDataLength);
// now copy the data from the new results to the original results:
for (uint32_t i=0, j=oldDataLength; i<nextDataLength; i++, j++)
{
UaString userName(&uaNextResults[iNext].m_modificationInformation[i].UserName);
if (!userName.isNull())
userName.copyTo(&uaResults_[rank].m_modificationInformation[j].UserName);
uaResults_[rank].m_modificationInformation[j].ModificationTime \
= uaNextResults[iNext].m_modificationInformation[i].ModificationTime;
uaResults_[rank].m_modificationInformation[j].UpdateType \
= uaNextResults[iNext].m_modificationInformation[i].UpdateType;
}
}
}
// check if we may still need to do another automatic BrowseNext
finished = autoReadMore >= maxAutoReadMore;
}
else
{
// ok, no more automatic BrowseNext invocations needed!
finished = true;
}
}
return ret;
}