internal override ReturnCode AttachToWaitSet(WaitSet waitset)
{
ReturnCode result = DDS.ReturnCode.AlreadyDeleted;
ReportStack.Start();
lock (this)
{
if (this.rlReq_isAlive)
{
if (!waitSetList.Contains(waitset))
{
result = waitset.wlReq_AttachGuardCondition(this);
if (result == DDS.ReturnCode.Ok)
{
/* The waitset will detach itself when it is destructed. */
waitSetList.Add(waitset);
}
}
else
{
result = DDS.ReturnCode.Ok;
}
}
}
return(result);
}
internal override ReturnCode DetachFromWaitSet(WaitSet waitset)
{
ReturnCode result = DDS.ReturnCode.AlreadyDeleted;
ReportStack.Start();
lock (this)
{
if (this.rlReq_isAlive)
{
if (waitSetList.Remove(waitset))
{
result = waitset.wlReq_DetachGuardCondition(this);
}
else
{
result = DDS.ReturnCode.PreconditionNotMet;
}
}
}
// if (result != DDS.ReturnCode.Ok) {
// OS_REPORT(OS_ERROR,
// "Condition::detach_waitset", 0,
// "detach failed with %s",
// DDS::OpenSplice::Utils::returnCodeToString(result));
// }
return(result);
}
internal virtual ReturnCode DetachFromWaitSet(WaitSet waitset)
{
ReturnCode result = DDS.ReturnCode.AlreadyDeleted;
lock (this)
{
if (this.rlReq_isAlive)
{
if (waitSetList.Remove(waitset))
{
result = waitset.wlReq_DetachGeneralCondition(this, rlReq_UserPeer);
}
else
{
/* Unable to take the given waitset is not a problem when de-initializing. */
if (!deinitializing)
{
result = DDS.ReturnCode.PreconditionNotMet;
}
}
}
}
return(result);
}
internal virtual ReturnCode AttachToWaitSet(WaitSet waitset)
{
ReturnCode result = DDS.ReturnCode.AlreadyDeleted;
lock (this)
{
if (this.rlReq_isAlive)
{
if (!waitSetList.Contains(waitset))
{
result = waitset.wlReq_AttachGeneralCondition(this, rlReq_UserPeer, rlReq_HandleSelf);
if (result == DDS.ReturnCode.Ok)
{
/* The waitset will detach itself when it is destructed. */
waitSetList.Add(waitset);
}
}
else
{
result = DDS.ReturnCode.Ok;
}
}
}
// if (result != DDS.ReturnCode.Ok) {
// OS_REPORT(OS_ERROR,
// "Condition::attach_waitset", 0,
// "attach failed with %s",
// DDS::OpenSplice::Utils::returnCodeToString(result));
// }
return(result);
}
internal virtual ReturnCode AttachToWaitSet(WaitSet waitset)
{
ReturnCode result = DDS.ReturnCode.AlreadyDeleted;
lock (this)
{
if (this.rlReq_isAlive)
{
if (!waitSetList.Contains(waitset))
{
result = waitset.wlReq_AttachGeneralCondition(this, rlReq_UserPeer, rlReq_HandleSelf);
if (result == DDS.ReturnCode.Ok)
{
/* The waitset will detach itself when it is destructed. */
waitSetList.Add(waitset);
}
}
else
{
result = DDS.ReturnCode.Ok;
}
}
}
return(result);
}
internal virtual ReturnCode DetachFromWaitSet(WaitSet waitset)
{
ReturnCode result = DDS.ReturnCode.AlreadyDeleted;
lock (this)
{
if (this.rlReq_isAlive)
{
if (waitSetList.Remove(waitset))
{
result = waitset.wlReq_DetachGeneralCondition(this, rlReq_UserPeer);
}
else
{
/* Unable to take the given waitset is not a problem when de-initializing. */
if (!deinitializing)
{
result = DDS.ReturnCode.PreconditionNotMet;
}
}
}
}
// if (result != DDS.ReturnCode.Ok) {
// OS_REPORT(OS_ERROR,
// "Condition::detach_waitset", 0,
// "detach failed with %s",
// DDS::OpenSplice::Utils::returnCodeToString(result));
// }
return(result);
}
static void Main(string[] args)
{
DDSEntityManager mgr = new DDSEntityManager("Listener");
ReturnCode status = ReturnCode.Error;
ListenerDataListener myListener;
String partitionName = "Listener Example";
int count = 0;
Duration wait_timeout = new Duration(0, 200000000);
// create Domain Participant
mgr.createParticipant(partitionName);
// create Type
MsgTypeSupport msgTS = new MsgTypeSupport();
mgr.registerType(msgTS);
// create Topic
mgr.createTopic("ListenerData_Msg");
// create Subscriber
mgr.createSubscriber();
// create DataReader
mgr.createReader(false);
IDataReader dreader = mgr.getReader();
myListener = new ListenerDataListener();
myListener.MsgDR = dreader as MsgDataReader;
Console.WriteLine("=== [ListenerDataSubscriber] SetListener");
StatusKind kind = StatusKind.DataAvailable | StatusKind.RequestedDeadlineMissed;
status = myListener.MsgDR.SetListener(myListener, kind);
ErrorHandler.checkStatus(status, "DataReader.SetListener");
Console.WriteLine("=== [ListenerDataSubscriber] Ready...");
myListener.terminated = false;
WaitSet ws = new WaitSet();
ws.AttachCondition(myListener.guardCond);
ICondition[] cond = null;
while (!myListener.terminated && count < 1500)
{
Console.WriteLine("=== [SubscriberUsingListener] waiting waitset ...");
ws.Wait(ref cond, wait_timeout);
myListener.guardCond.SetTriggerValue(false);
++count;
}
Console.WriteLine("===[ListenerDataSubscriber] Market Closed.");
mgr.getSubscriber().DeleteDataReader(myListener.MsgDR);
mgr.deleteSubscriber();
mgr.deleteTopic();
mgr.deleteParticipant();
}
internal override ReturnCode DetachFromWaitSet(WaitSet waitset)
{
ReturnCode result = DDS.ReturnCode.AlreadyDeleted;
ReportStack.Start();
lock (this)
{
if (this.rlReq_isAlive)
{
if (waitSetList.Remove(waitset))
{
result = waitset.wlReq_DetachGuardCondition(this);
}
else
{
result = DDS.ReturnCode.PreconditionNotMet;
}
}
}
return(result);
}
static void Main(string[] args)
{
bool automatic = true;
if (args.Length > 1)
{
automatic = args[0].Equals("true");
}
string hostName;
DDSEntityManager mgr = new DDSEntityManager();
// create domain participant
mgr.createParticipant("BuiltInTopics");
// Resolve the built-in Subscriber
ISubscriber builtInSubscriber = mgr.getParticipant().BuiltInSubscriber;
// Lookup the DataReader for the DCPSParticipant built-in Topic
IDataReader reader = builtInSubscriber.LookupDataReader("DCPSParticipant");
// Cast the DataReader to a ParticipantBuiltInTopicDataReader
ParticipantBuiltinTopicDataDataReader participantReader = reader as ParticipantBuiltinTopicDataDataReader;
ErrorHandler.checkHandle(participantReader, "ParticipantBuiltInTopicDataReader narrow");
// Allocate a new typed seq for data samples
ParticipantBuiltinTopicData[] data = null;
// Allocate a new seq for sample infos
SampleInfo[] info = null;
Console.WriteLine("=== [BuiltInTopicsDataSubscriber] : Waiting for historical data ... ");
participantReader.WaitForHistoricalData(Duration.Infinite);
Console.WriteLine("=== [BuiltInTopicsDataSubscriber] : done");
// Create a new ReadCondition for the reader that matches all samples
IReadCondition readCond = participantReader.CreateReadCondition(SampleStateKind.Any, ViewStateKind.Any, InstanceStateKind.Any);
ErrorHandler.checkHandle(readCond, "DataReader.CreateReadCondition");
// Create a waitset and add the ReadCondition created above
WaitSet aWaitSet = new WaitSet();
ReturnCode status = aWaitSet.AttachCondition(readCond);
ErrorHandler.checkStatus(status, "WaitSet.AttachCondition");
// Initialize and pre-allocate the seq used to obtain the triggered Conditions.
ICondition[] condSeq = new ICondition[0];
// Allocate a map store node information later on
// The key of map is the id of the node and the value is the
// number of active participants on that node. A Dictionary is used
// as an UnorderedMap.
Dictionary<int, int> nodes = new Dictionary<int, int>();
// Allocate a map to store node information later on.
// The key of the map is the id of the node and the value is the
// name of the node. A Dictionary is used as an UnorderedMap.
Dictionary<int, string> nodeNames = new Dictionary<int, string>();
Console.WriteLine("=== [BuiltInTopicsDataSubscriber] Ready ...");
// Block the current thread until the attached condition becomes true
// or the user interrupts.
status = aWaitSet.Wait(ref condSeq, Duration.Infinite);
ErrorHandler.checkStatus(status, "WaitSet.Wait");
bool done = false;
// Continue processing until interrupted.
while (!done)
{
// Take all the available data from the reader
status = participantReader.Take(ref data, ref info, Length.Unlimited,
SampleStateKind.Any, ViewStateKind.Any, InstanceStateKind.Any);
ErrorHandler.checkStatus(status, "ParticipantBuiltinTopicDataDataReader.Take");
// Verify the data has been taken
if (status == ReturnCode.Ok)
{
// Iterate the list of taken samples.
for (int i = 0; i < data.Length ; i++)
{
// Resolve the node identification
int nodeId = data[i].Key[0];
// Initialise the number of participants for a node
int participantCount = 0;
// Check if we saw a participant for the node before.
if (nodes.ContainsKey(nodeId))
{
participantCount = nodes[nodeId];
}
// Check sample info to see whether the instance is ALIVE.
if (info[i].InstanceState == InstanceStateKind.Alive)
{
// The splicedaemon publishes the host-name in the
// user_data field
if (data[i].UserData.Value.Length != 0)
{
hostName = Encoding.UTF8.GetString(data[i].UserData.Value);
nodeNames[nodeId] = hostName;
}
else
{
hostName = null;
}
// Increase the number of participants.
participantCount++;
// Update the number of participants for the node.
nodes[nodeId] = participantCount;
// If it's the first participant, report the node is up.
if (participantCount == 1)
{
Console.WriteLine("=== [BuiltInTopicsDataSubscriber] Node ' {0} ' started (Total nodes running: {1} ) participantCount = {2}",
nodeId, nodes.Count, participantCount);
}
if (hostName != null)
{
Console.WriteLine("=== [BuiltInTopicsDataSubscriber] Hostname for node ' {0} ' is hostname: {1}", nodeId, hostName);
}
}
else
{
// Decrease the number of participants.
participantCount--;
// If no more participants exist, report the node is down.
if (participantCount == 0)
{
hostName = nodeNames[nodeId];
nodeNames.Remove(nodeId);
nodes.Remove(nodeId);
if (hostName != null)
{
Console.WriteLine("=== [BuiltInTopicsDataSubscriber] Node {0} ({1}) stopped (Total nodes running: ({2})",
nodeId, hostName, nodes.Count);
}
else
{
Console.WriteLine("=== [BuiltInTopicsDataSubscriber] Node {0} stopped (Total nodes running : {1})",
nodeId, nodes.Count);
}
}
else if (participantCount > 0)
{
nodes[nodeId] = participantCount;
}
}
}
}
status = participantReader.ReturnLoan(ref data, ref info);
ErrorHandler.checkStatus(status, "ParticipantReader.ReturnLoan");
if (!automatic)
{
// Block the current thread until the attached condition becomes
// true or the user interrupts.
Console.WriteLine("=== [BuiltInTopicsDataSubscriber] Waiting ... ");
status = aWaitSet.Wait(ref condSeq, Duration.Infinite);
done = (status != ReturnCode.Ok);
}
else
{
done = true;
}
}
// Recursively delete all entities in the DomainParticipant.
mgr.getParticipant().DeleteContainedEntities();
// Delete DomainParticipant
mgr.getDomainParticipantFactory().DeleteParticipant(mgr.getParticipant());
}
static void subscribe(int domain_id, int sample_count)
{
// --- Create participant --- //
/* To customize the participant QoS, use
* the configuration file USER_QOS_PROFILES.xml */
DDS.DomainParticipant participant =
DDS.DomainParticipantFactory.get_instance().create_participant(
domain_id,
DDS.DomainParticipantFactory.PARTICIPANT_QOS_DEFAULT,
null /* listener */,
DDS.StatusMask.STATUS_MASK_NONE);
if (participant == null)
{
shutdown(participant);
throw new ApplicationException("create_participant error");
}
// --- Create subscriber --- //
/* To customize the subscriber QoS, use
* the configuration file USER_QOS_PROFILES.xml */
DDS.Subscriber subscriber = participant.create_subscriber(
DDS.DomainParticipant.SUBSCRIBER_QOS_DEFAULT,
null /* listener */,
DDS.StatusMask.STATUS_MASK_NONE);
if (subscriber == null)
{
shutdown(participant);
throw new ApplicationException("create_subscriber error");
}
// --- Create topic --- //
/* Register the type before creating the topic */
System.String type_name = waitsetsTypeSupport.get_type_name();
try {
waitsetsTypeSupport.register_type(
participant, type_name);
} catch (DDS.Exception e) {
Console.WriteLine("register_type error {0}", e);
shutdown(participant);
throw e;
}
/* To customize the topic QoS, use
* the configuration file USER_QOS_PROFILES.xml */
DDS.Topic topic = participant.create_topic(
"Example waitsets",
type_name,
DDS.DomainParticipant.TOPIC_QOS_DEFAULT,
null /* listener */,
DDS.StatusMask.STATUS_MASK_NONE);
if (topic == null)
{
shutdown(participant);
throw new ApplicationException("create_topic error");
}
// --- Create reader --- //
/* To customize the data reader QoS, use
* the configuration file USER_QOS_PROFILES.xml */
DDS.DataReader reader = subscriber.create_datareader(
topic,
DDS.Subscriber.DATAREADER_QOS_DEFAULT,
null,
DDS.StatusMask.STATUS_MASK_ALL);
if (reader == null)
{
shutdown(participant);
throw new ApplicationException("create_datareader error");
}
/* If you want to change the DataReader's QoS programmatically rather
* than using the XML file, you will need to add the following lines to
* your code and comment out the create_datareader call above.
*
* In this case, we reduce the liveliness timeout period to trigger the
* StatusCondition DDS.StatusKind.LIVELINESS_CHANGED_STATUS
*/
/*
* DDS.DataReaderQos datawriter_qos = new DDS.DataReaderQos();
* try {
* subscriber.get_default_datareader_qos(datawriter_qos);
* } catch (DDS.Exception e) {
* Console.WriteLine("get_default_datareader_qos error {0}", e);
* shutdown(participant);
* throw e;
* }
* datawriter_qos.liveliness.lease_duration.sec = 2;
* datawriter_qos.liveliness.lease_duration.nanosec = 0;
*
* reader = subscriber.create_datareader(topic, datawriter_qos,
* null, DDS.StatusMask.STATUS_MASK_NONE);
* if (reader == null) {
* shutdown(participant);
* throw new ApplicationException("create_datawriter_qos error");
* }
*/
/* Create read condition
* ---------------------
* Note that the Read Conditions are dependent on both incoming
* data as well as sample state. Thus, this method has more
* overhead than adding a DDS.StatusKind.DATA_AVAILABLE_STATUS
* StatusCondition. We show it here purely for reference
*/
DDS.ReadCondition read_condition = reader.create_readcondition(
DDS.SampleStateKind.NOT_READ_SAMPLE_STATE,
DDS.ViewStateKind.ANY_VIEW_STATE,
DDS.InstanceStateKind.ANY_INSTANCE_STATE);
if (read_condition == null)
{
shutdown(participant);
throw new ApplicationException("create_readcondition error");
}
/* Get status conditions
* ---------------------
* Each entity may have an attached Status Condition. To modify the
* statuses we need to get the reader's Status Conditions first.
*/
DDS.StatusCondition status_condition = reader.get_statuscondition();
if (status_condition.get_entity() == null)
{
shutdown(participant);
throw new ApplicationException("get_statuscondition error");
}
/* Set enabled statuses
* --------------------
* Now that we have the Status Condition, we are going to enable the
* statuses we are interested in:
* DDS.StatusKind.SUBSCRIPTION_MATCHED_STATUS
* and DDS.StatusKind.LIVELINESS_CHANGED_STATUS.
*/
try {
status_condition.set_enabled_statuses(
DDS.StatusMask.STATUS_MASK_NONE |
(DDS.StatusMask)DDS.StatusKind.SUBSCRIPTION_MATCHED_STATUS |
(DDS.StatusMask)DDS.StatusKind.LIVELINESS_CHANGED_STATUS);
} catch (DDS.Exception e) {
Console.WriteLine("set_enabled_statuses error {0}", e);
shutdown(participant);
throw e;
}
/* Create and attach conditions to the WaitSet
* -------------------------------------------
* Finally, we create the WaitSet and attach both the Read Conditions
* and the Status Condition to it.
*/
DDS.WaitSet waitset = new DDS.WaitSet();
/* Attach Read Conditions */
try {
waitset.attach_condition(read_condition);
} catch (DDS.Exception e) {
Console.WriteLine("attach_read_condition error {0}", e);
shutdown(participant);
throw e;
}
/* Attach Status Conditions */
try {
waitset.attach_condition(status_condition);
} catch (DDS.Exception e) {
Console.WriteLine("attach_status_condition error {0}", e);
shutdown(participant);
throw e;
}
/* Narrow the reader into your specific data type */
waitsetsDataReader waitsets_reader =
(waitsetsDataReader)reader;
/* Main loop */
for (int count = 0; (sample_count == 0) || (count < sample_count);
++count)
{
DDS.ConditionSeq active_conditions_seq = new DDS.ConditionSeq();
DDS.Duration_t timeout;
timeout.nanosec = (uint)500000000;
timeout.sec = 1;
/* wait() blocks execution of the thread until one or more attached
* Conditions become true, or until a user-specified timeout expires
*/
try {
waitset.wait(active_conditions_seq, timeout);
} catch (DDS.Retcode_Timeout) {
Console.WriteLine("Wait timed out!! No conditions were " +
"triggered.");
continue;
} catch (DDS.Exception e) {
Console.WriteLine("wait error {0}", e);
break;
}
/* Get the number of active conditions */
int active_conditions = active_conditions_seq.length;
Console.WriteLine("Got {0} active conditions", active_conditions);
for (int i = 0; i < active_conditions; i++)
{
/* Now we compare the current condition with the Status
* Conditions and the Read Conditions previously defined. If
* they match, we print the condition that was triggered.*/
/* Compare with Status Conditions */
if (active_conditions_seq.get_at(i) == status_condition)
{
/* Get the status changes so we can check which status
* condition triggered. */
DDS.StatusMask triggeredmask =
waitsets_reader.get_status_changes();
/* Liveliness changed */
DDS.StatusMask test = triggeredmask &
(DDS.StatusMask)DDS.StatusKind.
LIVELINESS_CHANGED_STATUS;
if (test != DDS.StatusMask.STATUS_MASK_NONE)
{
DDS.LivelinessChangedStatus st =
new DDS.LivelinessChangedStatus();
waitsets_reader.get_liveliness_changed_status(ref st);
Console.WriteLine("Liveliness changed => " +
"Active writers = {0}", st.alive_count);
}
/* Subscription matched */
test = triggeredmask &
(DDS.StatusMask)DDS.StatusKind.
SUBSCRIPTION_MATCHED_STATUS;
if (test != DDS.StatusMask.STATUS_MASK_NONE)
{
DDS.SubscriptionMatchedStatus st =
new DDS.SubscriptionMatchedStatus();
waitsets_reader.get_subscription_matched_status(ref st);
Console.WriteLine("Subscription matched => " +
"Cumulative matches = {0}", st.total_count);
}
}
/* Compare with Read Conditions */
else if (active_conditions_seq.get_at(i) == read_condition)
{
/* Current conditions match our conditions to read data, so
* we can read data just like we would do in any other
* example. */
waitsetsSeq data_seq = new waitsetsSeq();
DDS.SampleInfoSeq info_seq = new DDS.SampleInfoSeq();
/* You may want to call take_w_condition() or
* read_w_condition() on the Data Reader. This way you will
* use the same status masks that were set on the Read
* Condition.
* This is just a suggestion, you can always use
* read() or take() like in any other example.
*/
bool follow = true;
while (follow)
{
try {
waitsets_reader.take_w_condition(
data_seq, info_seq,
DDS.ResourceLimitsQosPolicy.LENGTH_UNLIMITED,
read_condition);
for (int j = 0; j < data_seq.length; ++j)
{
if (!info_seq.get_at(j).valid_data)
{
Console.WriteLine("Got metadata");
continue;
}
waitsetsTypeSupport.print_data(
data_seq.get_at(j));
}
} catch (DDS.Retcode_NoData) {
/* When there isn't data, the subscriber stop to
* take samples
*/
follow = false;
} finally {
waitsets_reader.return_loan(data_seq, info_seq);
}
}
}
}
}
// --- Shutdown --- //
/* Delete all entities */
shutdown(participant);
}
static void subscribe(int domain_id, int sample_count)
{
// --- Create participant --- //
/* To customize the participant QoS, use
* the configuration file USER_QOS_PROFILES.xml */
DDS.DomainParticipant participant =
DDS.DomainParticipantFactory.get_instance().create_participant(
domain_id,
DDS.DomainParticipantFactory.PARTICIPANT_QOS_DEFAULT,
null /* listener */,
DDS.StatusMask.STATUS_MASK_NONE);
if (participant == null)
{
shutdown(participant);
throw new ApplicationException("create_participant error");
}
// --- Create subscriber --- //
/* To customize the subscriber QoS, use
* the configuration file USER_QOS_PROFILES.xml */
DDS.Subscriber subscriber = participant.create_subscriber(
DDS.DomainParticipant.SUBSCRIBER_QOS_DEFAULT,
null /* listener */,
DDS.StatusMask.STATUS_MASK_NONE);
if (subscriber == null)
{
shutdown(participant);
throw new ApplicationException("create_subscriber error");
}
// --- Create topic --- //
/* Register the type before creating the topic */
System.String type_name =
waitset_statuscondTypeSupport.get_type_name();
try {
waitset_statuscondTypeSupport.register_type(
participant, type_name);
}
catch (DDS.Exception e) {
Console.WriteLine("register_type error {0}", e);
shutdown(participant);
throw e;
}
/* To customize the topic QoS, use
* the configuration file USER_QOS_PROFILES.xml */
DDS.Topic topic = participant.create_topic(
"Example waitset_statuscond",
type_name,
DDS.DomainParticipant.TOPIC_QOS_DEFAULT,
null /* listener */,
DDS.StatusMask.STATUS_MASK_NONE);
if (topic == null)
{
shutdown(participant);
throw new ApplicationException("create_topic error");
}
// --- Create reader --- //
/* To customize the data reader QoS, use
* the configuration file USER_QOS_PROFILES.xml */
DDS.DataReader reader = subscriber.create_datareader(
topic,
DDS.Subscriber.DATAREADER_QOS_DEFAULT,
null,
DDS.StatusMask.STATUS_MASK_ALL);
if (reader == null)
{
shutdown(participant);
throw new ApplicationException("create_datareader error");
}
// Get narrowed datareader
waitset_statuscondDataReader waitset_reader =
(waitset_statuscondDataReader)reader;
/* Get status conditions
* ---------------------
* Each entity may have an attached Status Condition. To modify the
* statuses we need to get the reader's Status Conditions first.
*/
DDS.StatusCondition status_condition = reader.get_statuscondition();
/* Set enabled statuses
* --------------------
* Now that we have the Status Condition, we are going to enable the
* status we are interested in: knowing that data is available
*/
try
{
status_condition.set_enabled_statuses(
(DDS.StatusMask)DDS.StatusKind.DATA_AVAILABLE_STATUS);
}
catch (DDS.Exception e)
{
shutdown(participant);
throw new ApplicationException("set_enabled_statuses error {0}",
e);
}
/* Create and attach conditions to the WaitSet
* -------------------------------------------
* Finally, we create the WaitSet and attach both the Read Conditions
* and the Status Condition to it.
*/
DDS.WaitSet waitset = new DDS.WaitSet();
/* Attach Status Conditions */
try
{
waitset.attach_condition(status_condition);
}
catch (DDS.Exception e)
{
shutdown(participant);
throw new ApplicationException("set_enabled_statuses error {0}",
e);
}
// --- Wait for data --- //
int count = 0;
DDS.Duration_t timeout;
timeout.nanosec = (uint)500000000;
timeout.sec = 1;
/* Main loop */
while (sample_count == 0 || count < sample_count)
{
DDS.ConditionSeq active_conditions = new DDS.ConditionSeq();
// The triggered condition(s) will be placed in active_conditions
try
{
waitset.wait(active_conditions, timeout);
Console.WriteLine("got {0} active conditions", active_conditions.length);
for (int i = 0; i < active_conditions.length; ++i)
{
/* In this case, we have only a single condition, but
* if we had multiple, we would need to iterate over
* them and check which one is true. Leaving the logic
* for the more complex case. */
if (active_conditions.get_at(i) == status_condition)
{
DDS.StatusMask triggeredmask =
waitset_reader.get_status_changes();
if ((triggeredmask &
(DDS.StatusMask)
DDS.StatusKind.DATA_AVAILABLE_STATUS) != 0)
{
/* Current conditions match our conditions to read data, so
* we can read data just like we would do in any other
* example. */
waitset_statuscondSeq data_seq
= new waitset_statuscondSeq();
DDS.SampleInfoSeq info_seq
= new DDS.SampleInfoSeq();
try
{
/* Access data using read(), take(), etc. If
* you fail to do this the condition will
* remain true, and the WaitSet will wake up
* immediately - causing high CPU usage when it
* does not sleep in the loop */
waitset_reader.take(
data_seq,
info_seq,
DDS.ResourceLimitsQosPolicy.LENGTH_UNLIMITED,
DDS.SampleStateKind.ANY_SAMPLE_STATE,
DDS.ViewStateKind.ANY_VIEW_STATE,
DDS.InstanceStateKind.ANY_INSTANCE_STATE);
}
catch (DDS.Retcode_NoData e)
{
shutdown(participant);
throw e;
}
catch (DDS.Exception e)
{
shutdown(participant);
throw e;
}
/* Iterate over returned data. Print the data
* values if it is not metadata.
*/
System.Int32 data_length = data_seq.length;
for (int j = 0; i < data_length; ++i)
{
if (!info_seq.get_at(j).valid_data)
{
Console.WriteLine("Got metadata");
continue;
}
waitset_statuscondTypeSupport.print_data(data_seq.get_at(j));
}
try
{
/* Return the loaned data */
waitset_reader.return_loan(data_seq, info_seq);
}
catch (DDS.Exception e)
{
Console.WriteLine("return loan error {0}", e);
}
}
}
}
}
catch (DDS.Retcode_Timeout)
{
Console.WriteLine("wait timed out");
count += 2;
continue;
}
}
// --- Shutdown --- //
/* Delete all entities */
shutdown(participant);
}
public void Run()
{
#if DBCallTests
DDS.Test.DatabaseTests();
#endif
Console.WriteLine("Press enter to enter...");
Console.ReadLine();
Data.DataTest detectionData = new Data.DataTest();
detectionData.TestId = 3214;
detectionData.Emergency = true;
detectionData.TestStr = "not really";
//detectionData.SeqInt[3] = 23;
#if TestMarshaling
//Tactical.DetectionTypeSupport support = new Tactical.DetectionTypeSupport();
//Tactical.Detection cachedObj = new Tactical.Detection();
//support.Copy(cachedObj, detectionData);
//SampleMarshaler marshaler = SampleMarshalerFactory.CreateMarshaler(detectionData);
//using (SampleMarshalHelper helper = new SampleMarshalHelper(marshaler))
//{
// DDS.OpenSplice.Gapi.Test.test_detection(helper.GapiPtr);
// Tactical.Detection detectionData2 = new Tactical.Detection();
// SampleMarshaler marshaler2 = SampleMarshalerFactory.CreateMarshaler(detectionData2);
// marshaler2.CopyOut(helper.GapiPtr, 0);
//}
//Duration d = new Duration(234, 2343);
//int sec;
//uint nanosec;
//DDS.OpenSplice.Gapi.Test.test_duration(d, out sec, out nanosec);
//LivelinessChangedStatus status;
//DDS.OpenSplice.Gapi.Test.get_liveliness_changed_status(out status);
//Time t = new Time(1, 2);
//int size = Marshal.SizeOf(t);
//IntPtr ptr = Marshal.AllocHGlobal(size);
//Marshal.StructureToPtr(t, ptr, true);
#endif
//DDS.Test.TestDataReaderQos();
//DDS.Test.TestTopicQos();
// Create a DomainParticipantFactory
DomainParticipantFactory dpf = DomainParticipantFactory.Instance;
Console.WriteLine("DomainParticipantFactory: " + dpf);
// Tailor the DomainPartipantFactoryQos;
DomainParticipantFactoryQos dpfQos = null;
ReturnCode result = dpf.GetQos(ref dpfQos);
Console.WriteLine("DomainParticipantFactory.get_qos: {0}", result);
Console.WriteLine("DomainParticipantFactoryQos.entity_factory.autoenable_created_entities: " + dpfQos.EntityFactory.AutoenableCreatedEntities);
dpfQos.EntityFactory.AutoenableCreatedEntities = false;
result = dpf.SetQos(dpfQos);
Console.WriteLine("DomainParticipantFactory.set_qos: {0}", result);
// Get the QOS settings for the Factory... Check values without additional changes
DomainParticipantFactoryQos dpf2Qos = null;
result = dpf.GetQos(ref dpf2Qos);
Console.WriteLine("DomainParticipantFactory.get_qos: {0}", result);
Console.WriteLine("DomainParticipantFactoryQos.entity_factory.autoenable_created_entities: " + dpf2Qos.EntityFactory.AutoenableCreatedEntities);
// Create the domainParticipant itself.
DomainParticipantQos dpQos = new DomainParticipantQos();
dpQos.UserData.Value = new byte[] { (byte)1, (byte)2, (byte)3 };
dpQos.EntityFactory.AutoenableCreatedEntities = true;
dpQos.ListenerScheduling.SchedulingClass.Kind = SchedulingClassQosPolicyKind.ScheduleDefault;
dpQos.ListenerScheduling.SchedulingPriorityKind.Kind = SchedulingPriorityQosPolicyKind.PriorityRelative;
dpQos.ListenerScheduling.SchedulingPriority = 0;
dpQos.WatchdogScheduling.SchedulingClass.Kind = SchedulingClassQosPolicyKind.ScheduleDefault;
dpQos.WatchdogScheduling.SchedulingPriorityKind.Kind = SchedulingPriorityQosPolicyKind.PriorityRelative;
dpQos.WatchdogScheduling.SchedulingPriority = 4;
IDomainParticipant dp = dpf.CreateParticipant(DDS.DomainId.Default, dpQos);
Console.Write("DomainParticipant: ");
Console.WriteLine(dp != null ? "yes" : "no");
if (dp.ContainsEntity(0))
{
Console.WriteLine("contains_entity with nil handle incorrect");
}
if (dp.ContainsEntity(100))
{
Console.WriteLine("contains_entity with incorrect handle incorrect");
}
Time currentTime;
dp.GetCurrentTime(out currentTime);
Console.WriteLine("Current Local Time: {0}", currentTime.ToDatetime().ToLocalTime());
// And look up this DomainParticipant.
IDomainParticipant dp2 = dpf.LookupParticipant(null);
DomainParticipantQos dp2Qos = null;
Console.Write("lookup DomainParticipant: ");
Console.WriteLine(dp2 != null ? "Success" : "Fail");
result = dp2.GetQos(ref dp2Qos);
Console.WriteLine("DomainParticipant.get_qos: {0}", result);
Console.WriteLine("DomainParticipantQos.entity_factory.autoenable_created_entities: " + dp2Qos.EntityFactory.AutoenableCreatedEntities);
// Create a new PublisherQos and set some values...
PublisherQos publisherQos = new PublisherQos();
publisherQos.EntityFactory.AutoenableCreatedEntities = true;
publisherQos.Partition.Name = new string[] { "howdy" }; //, "neighbor", "partition" };
// true not supported in 4.1 ??
publisherQos.Presentation.OrderedAccess = false;
// Create the Publisher
dp.Enable();
IPublisher publisher = dp.CreatePublisher(publisherQos);
Console.WriteLine("Create Publisher: {0}", publisher);
//DataWriterQos dwQos;
//publisher.GetDefaultDataWriterQos(out dwQos);
// Create a Detection Type Support and register it's type
Data.DataTestTypeSupport support = new Data.DataTestTypeSupport();
string test2 = support.TypeName;
Console.WriteLine("Register Typesupport");
result = support.RegisterType(dp, support.TypeName);
Console.WriteLine("Register Typesupport Result: {0}", result);
// Create a topic for the Detection type
TopicQos topicQos = null;
result = dp.GetDefaultTopicQos(ref topicQos);
//topicQos.Ownership.Kind = OwnershipQosPolicyKind.ExclusiveOwnershipQos;
//DDS.Test.TestTopicQos2(ref topicQos);
// Add a listener to the topic
ITopic topic = dp.CreateTopic("Data_DataTest", support.TypeName, topicQos,
this, StatusKind.InconsistentTopic);
topicQos.History.Depth = 5;
ITopic topic2 = dp.CreateTopic("Data_DataTest", support.TypeName, topicQos);
// ErrorCode errorCode;
// string msg;
// result = ErrorInfo.Update();
// result = ErrorInfo.GetCode(out errorCode);
// result = ErrorInfo.GetMessage(out msg);
// Create a DataWriter for the topic
Data.IDataTestDataWriter dataWriter = publisher.CreateDataWriter(topic) as Data.IDataTestDataWriter;
// Create a SubscriberQos object and set the partition name
SubscriberQos subscriberQos = null;
result = dp.GetDefaultSubscriberQos(ref subscriberQos);
subscriberQos.Partition.Name = new string[] { "howdy" };
// Create the subscriber
ISubscriber sub = dp.CreateSubscriber(subscriberQos);
// Verify that the subsciber was created...
if (sub == null)
{
Console.WriteLine("Subscriber not created");
return;
}
DDS.DataReaderQos readerQos = null;
sub.GetDefaultDataReaderQos(ref readerQos);
//readerQos.SubscriptionKeys.KeyList = new string[] { "test" };
//readerQos.Durability.Kind = DurabilityQosPolicyKind.TransientDurabilityQos;
//readerQos.Reliability.Kind = ReliabilityQosPolicyKind.ReliableReliabilityQos;
// Create a DataReader for the Detection topic
Data.IDataTestDataReader dataReader = sub.CreateDataReader(topic, readerQos, this, StatusKind.DataAvailable)
as Data.IDataTestDataReader;
// Create a filtered detection topic (only read detections that have an id != 4)
IContentFilteredTopic filteredTopic = dp.CreateContentFilteredTopic("Another", topic, "TestId <> %0", "4");
string[] testParams = null;
result = filteredTopic.GetExpressionParameters(ref testParams);
result = filteredTopic.SetExpressionParameters("hello", "test");
result = filteredTopic.GetExpressionParameters(ref testParams);
// Create a DataReader to read the filtered topic
IDataReader reader2 = sub.CreateDataReader(filteredTopic);
IQueryCondition queryCondition = dataReader.CreateQueryCondition(
"TestId = %0",
"234");
// just for testing...
//GC.Collect();
// WaitSet
WaitSet waitSet = new WaitSet();
// either use status conditions...or
IStatusCondition sc = reader2.StatusCondition;
sc.SetEnabledStatuses(StatusKind.DataAvailable);
waitSet.AttachCondition(sc);
IStatusCondition sc2 = reader2.StatusCondition;
// read conditions...
// IReadCondition readCond = reader2.CreateReadCondition();
// waitSet.AttachCondition(readCond);
ICondition[] cond = null;
//waitSet.Wait(ref cond, Duration.Infinite);
Console.WriteLine("Press enter to write data");
Console.ReadLine();
detectionData.SequenceTest = new int[1];// new System.Collections.Generic.List<int>();
//detectionData.SequenceTest.Add(4);
detectionData.SequenceTest[0] = 4;
// Write detection data
result = dataWriter.Write(detectionData);
detectionData = new Data.DataTest();
detectionData.TestId = 234;
dataWriter.Write(detectionData, InstanceHandle.Nil);
detectionData = new Data.DataTest();
detectionData.TestId = 235;
dataWriter.Write(detectionData);
detectionData = new Data.DataTest();
detectionData.TestId = 236;
dataWriter.Write(detectionData);
detectionData = new Data.DataTest();
detectionData.TestId = 237;
dataWriter.Write(detectionData);
Console.WriteLine("Press enter to read data");
Console.ReadLine();
// Read the data
SampleInfo[] infos = null;
Data.DataTest[] dataValues = null;
// result = dataReader.ReadWithCondition(ref dataValues, ref infos, DDS.Length.Unlimited, queryCondition);
result = dataReader.Read(ref dataValues, ref infos);
Console.WriteLine("dataReader: {0}", dataReader);
if (dataValues != null)
{
Console.WriteLine("Number of samples received: {0}", dataValues.Length);
for (int index = 0; index < dataValues.Length; index++)
{
Console.WriteLine("TestId: {0}, ProviderId: {1}, Emergency: {2}, TestStr: {3}", dataValues[index].TestId,
dataValues[index].ProviderId, dataValues[index].Emergency, dataValues[index].TestStr);
Console.WriteLine("info: ValidData: {0}, InstHandle: {1}, PubHandle:{2}, SourceTS: {3}, ArrivalTS: {4}, sample: {5}, view: {6}, instance: {7}",
infos[index].ValidData,
infos[index].InstanceHandle, infos[index].PublicationHandle,
infos[index].SourceTimestamp, infos[index].ArrivalTimestamp,
infos[index].SampleState, infos[index].ViewState, infos[index].InstanceState);
}
}
Console.WriteLine("Press enter to cleanup");
Console.ReadLine();
Console.WriteLine("DeleteContainedEntities");
result = dp.DeleteContainedEntities();
// If you don't use DeleteContainedEntities then you must delete everything that was created
//result = sub.DeleteDataReader(dataReader);
//result = publisher.DeleteDataWriter(dataWriter);
//result = dp.DeleteTopic(topic);
//result = dp.DeletePublisher(publisher);
//result = dp.DeleteSubscriber(sub);
Console.WriteLine("DeleteParticipant");
result = dpf.DeleteParticipant(dp);
Console.WriteLine("Press enter to exit");
Console.ReadLine();
}
static void subscribe( int domain_id, int sample_count )
{
// --- Create participant --- //
/* To customize the participant QoS, use
the configuration file USER_QOS_PROFILES.xml */
DDS.DomainParticipant participant =
DDS.DomainParticipantFactory.get_instance().create_participant(
domain_id,
DDS.DomainParticipantFactory.PARTICIPANT_QOS_DEFAULT,
null /* listener */,
DDS.StatusMask.STATUS_MASK_NONE);
if (participant == null) {
shutdown(participant);
throw new ApplicationException("create_participant error");
}
// --- Create subscriber --- //
/* To customize the subscriber QoS, use
the configuration file USER_QOS_PROFILES.xml */
DDS.Subscriber subscriber = participant.create_subscriber(
DDS.DomainParticipant.SUBSCRIBER_QOS_DEFAULT,
null /* listener */,
DDS.StatusMask.STATUS_MASK_NONE);
if (subscriber == null) {
shutdown(participant);
throw new ApplicationException("create_subscriber error");
}
// --- Create topic --- //
/* Register the type before creating the topic */
System.String type_name = waitsetsTypeSupport.get_type_name();
try {
waitsetsTypeSupport.register_type(
participant, type_name);
} catch (DDS.Exception e) {
Console.WriteLine("register_type error {0}", e);
shutdown(participant);
throw e;
}
/* To customize the topic QoS, use
the configuration file USER_QOS_PROFILES.xml */
DDS.Topic topic = participant.create_topic(
"Example waitsets",
type_name,
DDS.DomainParticipant.TOPIC_QOS_DEFAULT,
null /* listener */,
DDS.StatusMask.STATUS_MASK_NONE);
if (topic == null) {
shutdown(participant);
throw new ApplicationException("create_topic error");
}
// --- Create reader --- //
/* To customize the data reader QoS, use
the configuration file USER_QOS_PROFILES.xml */
DDS.DataReader reader = subscriber.create_datareader(
topic,
DDS.Subscriber.DATAREADER_QOS_DEFAULT,
null,
DDS.StatusMask.STATUS_MASK_ALL);
if (reader == null) {
shutdown(participant);
throw new ApplicationException("create_datareader error");
}
/* If you want to change the DataReader's QoS programmatically rather
* than using the XML file, you will need to add the following lines to
* your code and comment out the create_datareader call above.
*
* In this case, we reduce the liveliness timeout period to trigger the
* StatusCondition DDS.StatusKind.LIVELINESS_CHANGED_STATUS
*/
/*
DDS.DataReaderQos datawriter_qos = new DDS.DataReaderQos();
try {
subscriber.get_default_datareader_qos(datawriter_qos);
} catch (DDS.Exception e) {
Console.WriteLine("get_default_datareader_qos error {0}", e);
shutdown(participant);
throw e;
}
datawriter_qos.liveliness.lease_duration.sec = 2;
datawriter_qos.liveliness.lease_duration.nanosec = 0;
reader = subscriber.create_datareader(topic, datawriter_qos,
null, DDS.StatusMask.STATUS_MASK_NONE);
if (reader == null) {
shutdown(participant);
throw new ApplicationException("create_datawriter_qos error");
}
*/
/* Create read condition
* ---------------------
* Note that the Read Conditions are dependent on both incoming
* data as well as sample state. Thus, this method has more
* overhead than adding a DDS.StatusKind.DATA_AVAILABLE_STATUS
* StatusCondition. We show it here purely for reference
*/
DDS.ReadCondition read_condition = reader.create_readcondition(
DDS.SampleStateKind.NOT_READ_SAMPLE_STATE,
DDS.ViewStateKind.ANY_VIEW_STATE,
DDS.InstanceStateKind.ANY_INSTANCE_STATE);
if (read_condition == null) {
shutdown(participant);
throw new ApplicationException("create_readcondition error");
}
/* Get status conditions
* ---------------------
* Each entity may have an attached Status Condition. To modify the
* statuses we need to get the reader's Status Conditions first.
*/
DDS.StatusCondition status_condition = reader.get_statuscondition();
if (status_condition.get_entity() == null) {
shutdown(participant);
throw new ApplicationException("get_statuscondition error");
}
/* Set enabled statuses
* --------------------
* Now that we have the Status Condition, we are going to enable the
* statuses we are interested in:
* DDS.StatusKind.SUBSCRIPTION_MATCHED_STATUS
* and DDS.StatusKind.LIVELINESS_CHANGED_STATUS.
*/
try {
status_condition.set_enabled_statuses(
DDS.StatusMask.STATUS_MASK_NONE |
(DDS.StatusMask)DDS.StatusKind.SUBSCRIPTION_MATCHED_STATUS |
(DDS.StatusMask)DDS.StatusKind.LIVELINESS_CHANGED_STATUS);
} catch (DDS.Exception e) {
Console.WriteLine("set_enabled_statuses error {0}", e);
shutdown(participant);
throw e;
}
/* Create and attach conditions to the WaitSet
* -------------------------------------------
* Finally, we create the WaitSet and attach both the Read Conditions
* and the Status Condition to it.
*/
DDS.WaitSet waitset = new DDS.WaitSet();
/* Attach Read Conditions */
try {
waitset.attach_condition(read_condition);
} catch (DDS.Exception e) {
Console.WriteLine("attach_read_condition error {0}", e);
shutdown(participant);
throw e;
}
/* Attach Status Conditions */
try {
waitset.attach_condition(status_condition);
} catch (DDS.Exception e) {
Console.WriteLine("attach_status_condition error {0}", e);
shutdown(participant);
throw e;
}
/* Narrow the reader into your specific data type */
waitsetsDataReader waitsets_reader =
(waitsetsDataReader)reader;
/* Main loop */
for (int count = 0; (sample_count == 0) || (count < sample_count);
++count) {
DDS.ConditionSeq active_conditions_seq = new DDS.ConditionSeq();
DDS.Duration_t timeout;
timeout.nanosec = (uint)500000000;
timeout.sec = 1;
/* wait() blocks execution of the thread until one or more attached
* Conditions become true, or until a user-specified timeout expires
*/
try {
waitset.wait(active_conditions_seq, timeout);
} catch (DDS.Retcode_Timeout) {
Console.WriteLine("Wait timed out!! No conditions were " +
"triggered.");
continue;
} catch (DDS.Exception e) {
Console.WriteLine("wait error {0}", e);
break;
}
/* Get the number of active conditions */
int active_conditions = active_conditions_seq.length;
Console.WriteLine("Got {0} active conditions", active_conditions);
for (int i = 0; i < active_conditions; i++) {
/* Now we compare the current condition with the Status
* Conditions and the Read Conditions previously defined. If
* they match, we print the condition that was triggered.*/
/* Compare with Status Conditions */
if (active_conditions_seq.get_at(i) == status_condition) {
/* Get the status changes so we can check which status
* condition triggered. */
DDS.StatusMask triggeredmask =
waitsets_reader.get_status_changes();
/* Liveliness changed */
DDS.StatusMask test = triggeredmask &
(DDS.StatusMask)DDS.StatusKind.
LIVELINESS_CHANGED_STATUS;
if (test != DDS.StatusMask.STATUS_MASK_NONE) {
DDS.LivelinessChangedStatus st =
new DDS.LivelinessChangedStatus();
waitsets_reader.get_liveliness_changed_status(ref st);
Console.WriteLine("Liveliness changed => " +
"Active writers = {0}", st.alive_count);
}
/* Subscription matched */
test = triggeredmask &
(DDS.StatusMask)DDS.StatusKind.
SUBSCRIPTION_MATCHED_STATUS;
if (test != DDS.StatusMask.STATUS_MASK_NONE) {
DDS.SubscriptionMatchedStatus st =
new DDS.SubscriptionMatchedStatus();
waitsets_reader.get_subscription_matched_status(ref st);
Console.WriteLine("Subscription matched => " +
"Cumulative matches = {0}", st.total_count);
}
}
/* Compare with Read Conditions */
else if (active_conditions_seq.get_at(i) == read_condition) {
/* Current conditions match our conditions to read data, so
* we can read data just like we would do in any other
* example. */
waitsetsSeq data_seq = new waitsetsSeq();
DDS.SampleInfoSeq info_seq = new DDS.SampleInfoSeq();
/* You may want to call take_w_condition() or
* read_w_condition() on the Data Reader. This way you will
* use the same status masks that were set on the Read
* Condition.
* This is just a suggestion, you can always use
* read() or take() like in any other example.
*/
try {
waitsets_reader.take_w_condition(
data_seq, info_seq,
DDS.ResourceLimitsQosPolicy.LENGTH_UNLIMITED,
read_condition);
} catch (DDS.Exception e) {
Console.WriteLine("take error {0}", e);
break;
}
for (int j = 0; j < data_seq.length; ++j) {
if (!info_seq.get_at(j).valid_data) {
Console.WriteLine("Got metadata");
continue;
}
waitsetsTypeSupport.print_data(data_seq.get_at(i));
}
waitsets_reader.return_loan(data_seq, info_seq);
}
}
}
// --- Shutdown --- //
/* Delete all entities */
shutdown(participant);
}
static void Main(string[] args)
{
DDSEntityManager mgr = new DDSEntityManager("WaitSet");
String partitionName = "WaitSet example";
// create Domain Participant
mgr.createParticipant(partitionName);
// create Type
MsgTypeSupport msgTS = new MsgTypeSupport();
mgr.registerType(msgTS);
// create Topic
mgr.createTopic("WaitSetData_Msg");
// create Subscriber
mgr.createSubscriber();
// create DataReader
mgr.createReader(false);
// Read Events
IDataReader dreader = mgr.getReader();
MsgDataReader WaitSetReader = dreader as MsgDataReader;
// Create a WaitSet
WaitSet w = new WaitSet();
// Create a ReadCondition
IReadCondition readCond = WaitSetReader.CreateReadCondition(SampleStateKind.NotRead, ViewStateKind.New, InstanceStateKind.Alive);
ErrorHandler.checkHandle(readCond, "DataReader.CreateReadCondition");
// Create a QueryCondition
String[] queryStr = { "Hello again" };
Console.WriteLine("=== [WaitSetDataSubscriber] Query : message = \"Hello again");
IQueryCondition queryCond = WaitSetReader.CreateQueryCondition("message=%0", queryStr);
ErrorHandler.checkHandle(queryCond, "DataReader.CreateQueryCondition");
// Obtain a StatusCondition
IStatusCondition statusCond;
statusCond = dreader.StatusCondition;
statusCond.SetEnabledStatuses(StatusKind.LivelinessChanged);
ErrorHandler.checkHandle(statusCond, "DataReader.StatusCondition");
GuardCondition escape;
escape = new GuardCondition();
ReturnCode result;
result = w.AttachCondition(statusCond);
ErrorHandler.checkStatus(result, "WaitSet.AttachCondition (status)");
result = w.AttachCondition(readCond);
ErrorHandler.checkStatus(result, "WaitSet.AttachCondition (read)");
result = w.AttachCondition(queryCond);
ErrorHandler.checkStatus(result, "WaitSet.AttachCondition (query)");
result = w.AttachCondition(escape);
ErrorHandler.checkStatus(result, "WaitSet.AttachCondition (guard)");
/* Initialize and pre-allocate the GuardList used to obtain
the triggered Conditions. */
ICondition[] guardList = new ICondition[4];
DDS.SampleInfo[] infoSeq = null;
Msg[] msgSeq = null;
bool escaped = false;
bool writerLeft = false;
int prevCount = 0;
int count = 0;
Console.WriteLine("=== [WaitSetDataSubscriber] Ready ...");
while (!escaped && count < 20 )
{
/**
* Wait until data will be available
*/
Duration wait_timeout = new Duration(Duration.InfiniteSec, Duration.InfiniteNanoSec);
result = w.Wait(ref guardList, wait_timeout);
ErrorHandler.checkStatus(result, "WaitSet.Wait");
/* Walk over all guards to display information */
foreach (ICondition guard in guardList)
{
if (guard == readCond)
{
result = WaitSetReader.ReadWithCondition(ref msgSeq, ref infoSeq,
Length.Unlimited, readCond);
ErrorHandler.checkStatus(result, "WaitSetReader.ReadWithCondition");
foreach (Msg msg in msgSeq)
{
Console.WriteLine(" --- New message received --- ");
Console.WriteLine(" userID: {0}", msg.userID);
Console.WriteLine(" Message : \"{0}", msg.message);
}
result = WaitSetReader.ReturnLoan(ref msgSeq, ref infoSeq);
ErrorHandler.checkStatus(result, "WaitSet.ReturnLoan");
}
else if (guard == queryCond)
{
result = WaitSetReader.TakeWithCondition(ref msgSeq, ref infoSeq,
Length.Unlimited, queryCond);
ErrorHandler.checkStatus(result, "WaitSetReader.TakeWithCondition");
foreach (Msg msg in msgSeq)
{
Console.WriteLine(" --- New message received with QueryCondition --- ");
Console.WriteLine(" userID: {0}", msg.userID);
Console.WriteLine(" Message : \" {0}", msg.message);
}
result = WaitSetReader.ReturnLoan(ref msgSeq, ref infoSeq);
ErrorHandler.checkStatus(result, "WaitSet.ReturnLoan");
}
else if (guard == statusCond)
{
LivelinessChangedStatus livelinessStatus = new LivelinessChangedStatus();
result = WaitSetReader.GetLivelinessChangedStatus(ref livelinessStatus);
ErrorHandler.checkStatus(result, "DataReader.getLivelinessChangedStatus");
if (livelinessStatus.AliveCount < prevCount)
{
Console.WriteLine("!!! A WaitSetDataWriter lost its liveliness");
writerLeft = true;
Console.WriteLine("Triggering escape condition.");
ReturnCode status = escape.SetTriggerValue(true);
}
else
{
Console.WriteLine("!!! A WaitSetDataWriter joined");
}
prevCount = livelinessStatus.AliveCount;
}
else if (guard == escape)
{
Console.WriteLine("WaitSetSubscriber has terminated.");
escaped = true;
ReturnCode status = escape.SetTriggerValue(false);
}
else
{
// Unknown Condition
}
}
++count;
}
// Detach all Conditions from the WaitSet
result = w.DetachCondition(escape);
ErrorHandler.checkStatus(result, "WaitSet.DetachCondition (escape)");
result = w.DetachCondition(readCond);
ErrorHandler.checkStatus(result, "WaitSet.DetachCondition (readCond)");
result = w.DetachCondition(queryCond);
ErrorHandler.checkStatus(result, "WaitSet.DetachCondition (queryCond)");
result = w.DetachCondition(statusCond);
ErrorHandler.checkStatus(result, "WaitSet.DetachCondition (statusCond)");
Console.WriteLine("=== [Subscriber] Closed");
// clean up
WaitSetReader.DeleteReadCondition(readCond);
WaitSetReader.DeleteReadCondition(queryCond);
mgr.getSubscriber().DeleteDataReader(WaitSetReader);
mgr.deleteSubscriber();
mgr.deleteTopic();
mgr.deleteParticipant();
}
static void subscribe(int domain_id, int sample_count)
{
// --- Create participant --- //
/* To customize the participant QoS, use
the configuration file USER_QOS_PROFILES.xml */
DDS.DomainParticipant participant =
DDS.DomainParticipantFactory.get_instance().create_participant(
domain_id,
DDS.DomainParticipantFactory.PARTICIPANT_QOS_DEFAULT,
null /* listener */,
DDS.StatusMask.STATUS_MASK_NONE);
if (participant == null) {
shutdown(participant);
throw new ApplicationException("create_participant error");
}
// --- Create subscriber --- //
/* To customize the subscriber QoS, use
the configuration file USER_QOS_PROFILES.xml */
DDS.Subscriber subscriber = participant.create_subscriber(
DDS.DomainParticipant.SUBSCRIBER_QOS_DEFAULT,
null /* listener */,
DDS.StatusMask.STATUS_MASK_NONE);
if (subscriber == null) {
shutdown(participant);
throw new ApplicationException("create_subscriber error");
}
// --- Create topic --- //
/* Register the type before creating the topic */
System.String type_name =
waitset_statuscondTypeSupport.get_type_name();
try {
waitset_statuscondTypeSupport.register_type(
participant, type_name);
}
catch(DDS.Exception e) {
Console.WriteLine("register_type error {0}", e);
shutdown(participant);
throw e;
}
/* To customize the topic QoS, use
the configuration file USER_QOS_PROFILES.xml */
DDS.Topic topic = participant.create_topic(
"Example waitset_statuscond",
type_name,
DDS.DomainParticipant.TOPIC_QOS_DEFAULT,
null /* listener */,
DDS.StatusMask.STATUS_MASK_NONE);
if (topic == null) {
shutdown(participant);
throw new ApplicationException("create_topic error");
}
// --- Create reader --- //
/* To customize the data reader QoS, use
the configuration file USER_QOS_PROFILES.xml */
DDS.DataReader reader = subscriber.create_datareader(
topic,
DDS.Subscriber.DATAREADER_QOS_DEFAULT,
null,
DDS.StatusMask.STATUS_MASK_ALL);
if (reader == null) {
shutdown(participant);
throw new ApplicationException("create_datareader error");
}
// Get narrowed datareader
waitset_statuscondDataReader waitset_reader =
(waitset_statuscondDataReader)reader;
/* Get status conditions
* ---------------------
* Each entity may have an attached Status Condition. To modify the
* statuses we need to get the reader's Status Conditions first.
*/
DDS.StatusCondition status_condition = reader.get_statuscondition();
/* Set enabled statuses
* --------------------
* Now that we have the Status Condition, we are going to enable the
* status we are interested in: knowing that data is available
*/
try
{
status_condition.set_enabled_statuses(
(DDS.StatusMask)DDS.StatusKind.DATA_AVAILABLE_STATUS);
}
catch (DDS.Exception e)
{
shutdown(participant);
throw new ApplicationException("set_enabled_statuses error {0}",
e);
}
/* Create and attach conditions to the WaitSet
* -------------------------------------------
* Finally, we create the WaitSet and attach both the Read Conditions
* and the Status Condition to it.
*/
DDS.WaitSet waitset = new DDS.WaitSet();
/* Attach Status Conditions */
try
{
waitset.attach_condition(status_condition);
}
catch (DDS.Exception e)
{
shutdown(participant);
throw new ApplicationException("set_enabled_statuses error {0}",
e);
}
// --- Wait for data --- //
int count = 0;
DDS.Duration_t timeout;
timeout.nanosec = (uint)500000000;
timeout.sec = 1;
/* Main loop */
while (sample_count == 0 || count < sample_count)
{
DDS.ConditionSeq active_conditions = new DDS.ConditionSeq();
// The triggered condition(s) will be placed in active_conditions
try
{
waitset.wait(active_conditions, timeout);
Console.WriteLine("got {0} active conditions", active_conditions.length);
for (int i = 0; i < active_conditions.length; ++i)
{
/* In this case, we have only a single condition, but
if we had multiple, we would need to iterate over
them and check which one is true. Leaving the logic
for the more complex case. */
if (active_conditions.get_at(i) == status_condition)
{
DDS.StatusMask triggeredmask =
waitset_reader.get_status_changes();
if ((triggeredmask &
(DDS.StatusMask)
DDS.StatusKind.DATA_AVAILABLE_STATUS) != 0)
{
/* Current conditions match our conditions to read data, so
* we can read data just like we would do in any other
* example. */
waitset_statuscondSeq data_seq
= new waitset_statuscondSeq();
DDS.SampleInfoSeq info_seq
= new DDS.SampleInfoSeq();
try
{
/* Access data using read(), take(), etc. If
* you fail to do this the condition will
* remain true, and the WaitSet will wake up
* immediately - causing high CPU usage when it
* does not sleep in the loop */
waitset_reader.take(
data_seq,
info_seq,
DDS.ResourceLimitsQosPolicy.LENGTH_UNLIMITED,
DDS.SampleStateKind.ANY_SAMPLE_STATE,
DDS.ViewStateKind.ANY_VIEW_STATE,
DDS.InstanceStateKind.ANY_INSTANCE_STATE);
}
catch (DDS.Retcode_NoData e)
{
shutdown(participant);
throw e;
}
catch (DDS.Exception e)
{
shutdown(participant);
throw e;
}
/* Iterate over returned data. Print the data
* values if it is not metadata.
*/
System.Int32 data_length = data_seq.length;
for (int j = 0; i < data_length; ++i)
{
if (!info_seq.get_at(j).valid_data)
{
Console.WriteLine("Got metadata");
continue;
}
waitset_statuscondTypeSupport.print_data(data_seq.get_at(j));
}
try
{
/* Return the loaned data */
waitset_reader.return_loan(data_seq, info_seq);
}
catch (DDS.Exception e)
{
Console.WriteLine("return loan error {0}", e);
}
}
}
}
}
catch (DDS.Retcode_Timeout)
{
Console.WriteLine("wait timed out");
count += 2;
continue;
}
}
// --- Shutdown --- //
/* Delete all entities */
shutdown(participant);
}
static void subscribe(int domain_id, int sample_count)
{
/* Auxiliary variables */
String odd_string = "'ODD'";
String even_string = "'EVEN'";
// --- Create participant --- //
/* To customize the participant QoS, use
* the configuration file USER_QOS_PROFILES.xml */
DDS.DomainParticipant participant =
DDS.DomainParticipantFactory.get_instance().create_participant(
domain_id,
DDS.DomainParticipantFactory.PARTICIPANT_QOS_DEFAULT,
null /* listener */,
DDS.StatusMask.STATUS_MASK_NONE);
if (participant == null)
{
shutdown(participant);
throw new ApplicationException("create_participant error");
}
// --- Create subscriber --- //
/* To customize the subscriber QoS, use
* the configuration file USER_QOS_PROFILES.xml */
DDS.Subscriber subscriber = participant.create_subscriber(
DDS.DomainParticipant.SUBSCRIBER_QOS_DEFAULT,
null /* listener */,
DDS.StatusMask.STATUS_MASK_NONE);
if (subscriber == null)
{
shutdown(participant);
throw new ApplicationException("create_subscriber error");
}
// --- Create topic --- //
/* Register the type before creating the topic */
System.String type_name = waitset_query_condTypeSupport.get_type_name();
try {
waitset_query_condTypeSupport.register_type(
participant, type_name);
}
catch (DDS.Exception e) {
Console.WriteLine("register_type error {0}", e);
shutdown(participant);
throw e;
}
/* To customize the topic QoS, use
* the configuration file USER_QOS_PROFILES.xml */
DDS.Topic topic = participant.create_topic(
"Example waitset_query_cond",
type_name,
DDS.DomainParticipant.TOPIC_QOS_DEFAULT,
null /* listener */,
DDS.StatusMask.STATUS_MASK_NONE);
if (topic == null)
{
shutdown(participant);
throw new ApplicationException("create_topic error");
}
// --- Create reader --- //
/* To customize the data reader QoS, use
* the configuration file USER_QOS_PROFILES.xml */
DDS.DataReader reader = subscriber.create_datareader(
topic,
DDS.Subscriber.DATAREADER_QOS_DEFAULT,
null,
DDS.StatusMask.STATUS_MASK_NONE);
if (reader == null)
{
shutdown(participant);
throw new ApplicationException("create_datareader error");
}
waitset_query_condDataReader waitset_query_cond_reader =
(waitset_query_condDataReader)reader;
/* Create query condition */
DDS.StringSeq query_parameters = new DDS.StringSeq(1);
query_parameters.ensure_length(1, 1);
/* The initial value of the parameters is EVEN string */
query_parameters.set_at(0, even_string);
String query_expression = "name MATCH %0";
DDS.QueryCondition query_condition =
waitset_query_cond_reader.create_querycondition(
DDS.SampleStateKind.NOT_READ_SAMPLE_STATE,
DDS.ViewStateKind.ANY_VIEW_STATE,
DDS.InstanceStateKind.ANY_INSTANCE_STATE,
query_expression,
query_parameters);
if (query_condition == null)
{
shutdown(participant);
throw new ApplicationException("create_querycondition error");
}
DDS.WaitSet waitset = new DDS.WaitSet();
if (waitset == null)
{
shutdown(participant);
throw new ApplicationException("create waitset error");
}
/* Attach Query Conditions */
try {
waitset.attach_condition((DDS.Condition)query_condition);
} catch (DDS.Exception e) {
Console.WriteLine("attach_condition error {0}", e);
shutdown(participant);
throw e;
}
DDS.Duration_t wait_timeout;
wait_timeout.nanosec = (uint)500000000;
wait_timeout.sec = 1;
Console.WriteLine("\n>>>Timeout: {0} sec",
wait_timeout.sec, wait_timeout.nanosec);
Console.WriteLine(">>> Query conditions: name MATCH %0");
Console.WriteLine("\t%0 = {0}", query_parameters.get_at(0));
Console.WriteLine("---------------------------------\n");
// --- Wait for data --- //
/* Main loop */
for (int count = 0;
(sample_count == 0) || (count < sample_count);
++count)
{
DDS.ConditionSeq active_conditions_seq = new DDS.ConditionSeq();
/* We set a new parameter in the Query Condition after 7 secs */
if (count == 7)
{
query_parameters.set_at(0, odd_string);
Console.WriteLine("CHANGING THE QUERY CONDITION");
Console.WriteLine("\n>>> Query conditions: name MATCH %0");
Console.WriteLine("\t%0 = {0}", query_parameters.get_at(0));
Console.WriteLine(">>> We keep one sample in the history");
Console.WriteLine("-------------------------------------\n");
query_condition.set_query_parameters(query_parameters);
}
/* wait() blocks execution of the thread until one or more attached
* Conditions become true, or until a user-specified timeout
* expires.
*/
try {
waitset.wait(active_conditions_seq, wait_timeout);
} catch (DDS.Retcode_Timeout) {
Console.WriteLine("Wait timed out!! No conditions were " +
"triggered.");
continue;
} catch (DDS.Exception e) {
Console.WriteLine("wait error {0}", e);
break;
}
waitset_query_condSeq data_seq = new waitset_query_condSeq();
DDS.SampleInfoSeq info_seq = new DDS.SampleInfoSeq();
bool follow = true;
while (follow)
{
try {
waitset_query_cond_reader.take_w_condition(
data_seq, info_seq,
DDS.ResourceLimitsQosPolicy.LENGTH_UNLIMITED,
query_condition);
for (int i = 0; i < data_seq.length; ++i)
{
if (!info_seq.get_at(i).valid_data)
{
Console.WriteLine("Got metadata");
continue;
}
waitset_query_condTypeSupport.print_data(
data_seq.get_at(i));
}
} catch (DDS.Retcode_NoData) {
/* When there isn't data, the subscriber stop to
* take samples
*/
follow = false;
} finally {
waitset_query_cond_reader.return_loan(data_seq, info_seq);
}
}
}
// --- Shutdown --- //
/* Delete all entities */
shutdown(participant);
}
static void Main(string[] args)
{
string domain = null;
/* Create a DomainParticipant */
DomainParticipantFactory dpf = DomainParticipantFactory.Instance;
IDomainParticipant participant = dpf.CreateParticipant(
domain,
null,
StatusKind.Any);
ErrorHandler.checkHandle(
participant, "DDS.DomainParticipantFactory.CreateParticipant");
/* Register the required datatype for ChatMessage. */
ChatMessageTypeSupport chatMessageTS = new ChatMessageTypeSupport();
string chatMessageTypeName = chatMessageTS.TypeName;
ReturnCode status = chatMessageTS.RegisterType(
participant, chatMessageTypeName);
ErrorHandler.checkStatus(
status, "Chat.ChatMessageTypeSupport.RegisterType");
/* Register the required datatype for NameService. */
NameServiceTypeSupport nameServiceTS = new NameServiceTypeSupport();
ErrorHandler.checkHandle(
nameServiceTS, "new NameServiceTypeSupport");
string nameServiceTypeName = nameServiceTS.TypeName;
status = nameServiceTS.RegisterType(
participant, nameServiceTypeName);
ErrorHandler.checkStatus(
status, "Chat.NameServiceTypeSupport.RegisterType");
/* Set the ReliabilityQosPolicy to RELIABLE. */
TopicQos reliableTopicQos = new TopicQos();
status = participant.GetDefaultTopicQos(ref reliableTopicQos);
ErrorHandler.checkStatus(
status, "DDS.DomainParticipant.get_DefaultTopicQos");
reliableTopicQos.Reliability.Kind = ReliabilityQosPolicyKind.ReliableReliabilityQos;
/* Make the tailored QoS the new default. */
status = participant.SetDefaultTopicQos(reliableTopicQos);
ErrorHandler.checkStatus(
status, "DDS.DomainParticipant.SetDefaultTopicQos");
/* Use the changed policy when defining the ChatMessage topic */
ITopic chatMessageTopic = participant.CreateTopic(
"Chat_ChatMessage",
chatMessageTypeName,
reliableTopicQos);
ErrorHandler.checkHandle(
chatMessageTopic,
"DDS.DomainParticipant.CreateTopic (ChatMessage)");
/* Set the DurabilityQosPolicy to TRANSIENT. */
TopicQos settingTopicQos = new TopicQos();
status = participant.GetDefaultTopicQos(ref settingTopicQos);
ErrorHandler.checkStatus(
status, "DDS.DomainParticipant.GetDefaultTopicQos");
settingTopicQos.Durability.Kind = DurabilityQosPolicyKind.TransientDurabilityQos;
/* Create the NameService Topic. */
ITopic nameServiceTopic = participant.CreateTopic(
"Chat_NameService",
nameServiceTypeName,
settingTopicQos);
ErrorHandler.checkHandle(
nameServiceTopic, "DDS.DomainParticipant.CreateTopic");
/* Adapt the default SubscriberQos to read from the
"ChatRoom" Partition. */
SubscriberQos subQos = new SubscriberQos();
status = participant.GetDefaultSubscriberQos(ref subQos);
ErrorHandler.checkStatus(
status, "DDS.DomainParticipant.GetDefaultSubscriberQos");
subQos.Partition.Name = new string[1];
subQos.Partition.Name[0] = "ChatRoom";
/* Create a Subscriber for the UserLoad application. */
ISubscriber chatSubscriber = participant.CreateSubscriber(subQos);
ErrorHandler.checkHandle(
chatSubscriber, "DDS.DomainParticipant.CreateSubscriber");
/* Create a DataReader for the NameService Topic
(using the appropriate QoS). */
DataReaderQos nsQos = null;
status = chatSubscriber.GetDefaultDataReaderQos(ref nsQos);
ErrorHandler.checkStatus(
status, "DDS.Subscriber.GetDefaultDataReaderQos");
status = chatSubscriber.CopyFromTopicQos(ref nsQos, settingTopicQos);
ErrorHandler.checkStatus(
status, "DDS.Subscriber.CopyFromTopicQos");
IDataReader parentReader = chatSubscriber.CreateDataReader(
nameServiceTopic,
nsQos,
null,
StatusKind.Any);
ErrorHandler.checkHandle(
parentReader, "DDS.Subscriber.CreateDatareader (NameService)");
NameServiceDataReader nameServer = parentReader as NameServiceDataReader;
/* Adapt the DataReaderQos for the ChatMessageDataReader to
keep track of all messages. */
DataReaderQos messageQos = new DataReaderQos();
status = chatSubscriber.GetDefaultDataReaderQos(ref messageQos);
ErrorHandler.checkStatus(
status, "DDS.Subscriber.GetDefaultDataReaderQos");
status = chatSubscriber.CopyFromTopicQos(
ref messageQos, reliableTopicQos);
ErrorHandler.checkStatus(
status, "DDS.Subscriber.CopyFromTopicQos");
messageQos.History.Kind = HistoryQosPolicyKind.KeepAllHistoryQos;
/* Create a DataReader for the ChatMessage Topic
(using the appropriate QoS). */
parentReader = chatSubscriber.CreateDataReader(
chatMessageTopic,
messageQos);
ErrorHandler.checkHandle(
parentReader, "DDS.Subscriber.CreateDataReader (ChatMessage)");
/* Narrow the abstract parent into its typed representative. */
ChatMessageDataReader loadAdmin = parentReader as ChatMessageDataReader;
/* Initialize the Query Arguments. */
string[] parameters = { "0" };
/* Create a QueryCondition that will contain all messages
with userID=ownID */
IQueryCondition singleUser = loadAdmin.CreateQueryCondition("userID=%0", parameters);
ErrorHandler.checkHandle(singleUser, "DDS.DataReader.CreateQuerycondition");
/* Create a ReadCondition that will contain new users only */
IReadCondition newUser = nameServer.CreateReadCondition(SampleStateKind.NotRead, ViewStateKind.New, InstanceStateKind.Alive);
ErrorHandler.checkHandle(newUser, "DDS.DataReader.create_readcondition");
/* Obtain a StatusCondition that triggers only when a Writer
changes Liveliness */
IStatusCondition leftUser = loadAdmin.StatusCondition;
ErrorHandler.checkHandle(leftUser, "DDS.DataReader.GetStatusCondition");
status = leftUser.SetEnabledStatuses(StatusKind.LivelinessChanged);
ErrorHandler.checkStatus(status, "DDS.StatusCondition.SetEnabledStatuses");
/* Create a bare guard which will be used to close the room */
escape = new GuardCondition();
/* Create a waitset and add the ReadConditions */
WaitSet userLoadWS = new WaitSet();
status = userLoadWS.AttachCondition(newUser);
ErrorHandler.checkStatus(status, "DDS.WaitSet.AttachCondition (newUser)");
status = userLoadWS.AttachCondition(leftUser);
ErrorHandler.checkStatus(status, "DDS.WaitSet.AttachCondition (leftUser)");
status = userLoadWS.AttachCondition(escape);
ErrorHandler.checkStatus(status, "DDS.WaitSet.AttachCondition (escape)");
/* Initialize and pre-allocate the GuardList used to obtain
the triggered Conditions. */
ICondition[] guardList = new ICondition[3];
/* Remove all known Users that are not currently active. */
NameService[] nsMsgs = null;
SampleInfo[] nsInfos = null;
status = nameServer.Take(ref nsMsgs,
ref nsInfos,
Length.Unlimited,
SampleStateKind.Any,
ViewStateKind.Any,
InstanceStateKind.NotAlive);
ErrorHandler.checkStatus(
status, "Chat.NameServiceDataReader.Take");
status = nameServer.ReturnLoan(ref nsMsgs, ref nsInfos);
ErrorHandler.checkStatus(
status, "Chat.NameServiceDataReader.ReturnLoan");
/* Start the sleeper thread. */
new Thread(new UserLoad().doWait).Start();
bool closed = false;
int prevCount = 0;
ChatMessage[] msgs = null;
SampleInfo[] msgInfos = null;
while (!closed)
{
/* Wait until at least one of the Conditions in the
waitset triggers. */
status = userLoadWS.Wait(ref guardList, Duration.Infinite);
ErrorHandler.checkStatus(status, "DDS.WaitSet.Wait");
/* Walk over all guards to display information */
foreach (ICondition guard in guardList)
{
if (guard == newUser)
{
/* The newUser ReadCondition contains data */
status = nameServer.ReadWithCondition(ref nsMsgs, ref nsInfos, newUser);
ErrorHandler.checkStatus(status, "Chat.NameServiceDataReader.read_w_condition");
foreach (NameService ns in nsMsgs)
{
Console.WriteLine("New user: "******"Chat.NameServiceDataReader.ReturnLoan");
}
else if (guard == leftUser)
{
// Some liveliness has changed (either a DataWriter
// joined or a DataWriter left)
LivelinessChangedStatus livelinessStatus = new LivelinessChangedStatus() ;
status = loadAdmin.GetLivelinessChangedStatus(ref livelinessStatus);
ErrorHandler.checkStatus(status, "DDS.DataReader.getLivelinessChangedStatus");
if (livelinessStatus.AliveCount < prevCount)
{
/* A user has left the ChatRoom, since a DataWriter
lost its liveliness. Take the effected users
so they will not appear in the list later on. */
status = nameServer.Take(
ref nsMsgs,
ref nsInfos,
Length.Unlimited,
SampleStateKind.Any,
ViewStateKind.Any,
InstanceStateKind.NotAliveNoWriters);
ErrorHandler.checkStatus(status, "Chat.NameServiceDataReader.Take");
foreach (NameService nsMsg in nsMsgs)
{
/* re-apply query arguments */
parameters[0] = nsMsg.userID.ToString();
status = singleUser.SetQueryParameters(parameters);
ErrorHandler.checkStatus(status, "DDS.QueryCondition.SetQueryParameters");
/* Read this user's history */
status = loadAdmin.TakeWithCondition(
ref msgs,
ref msgInfos,
singleUser);
ErrorHandler.checkStatus(
status,
"Chat.ChatMessageDataReader.TakeWithCondition");
/* Display the user and his history */
Console.WriteLine("Departed user {0} has sent {1} messages ", nsMsg.name, msgs.Length);
status = loadAdmin.ReturnLoan(ref msgs, ref msgInfos);
ErrorHandler.checkStatus(status, "Chat.ChatMessageDataReader.ReturnLoan");
}
status = nameServer.ReturnLoan(ref nsMsgs, ref nsInfos);
ErrorHandler.checkStatus(status, "Chat.NameServiceDataReader.ReturnLoan");
}
prevCount = livelinessStatus.AliveCount;
}
else if (guard == escape)
{
Console.WriteLine("UserLoad has terminated.");
closed = true;
}
else
{
//System.Diagnostics.Debug.Fail("Unknown Condition");
}
} /* for */
} /* while (!closed) */
/* Remove all Conditions from the WaitSet. */
status = userLoadWS.DetachCondition(escape);
ErrorHandler.checkStatus(status, "DDS.WaitSet.DetachCondition (escape)");
status = userLoadWS.DetachCondition(leftUser);
ErrorHandler.checkStatus(status, "DDS.WaitSet.DetachCondition (leftUser)");
status = userLoadWS.DetachCondition(newUser);
ErrorHandler.checkStatus(status, "DDS.WaitSet.DetachCondition (newUser)");
/* Free all resources */
status = participant.DeleteContainedEntities();
ErrorHandler.checkStatus(status, "DDS.DomainParticipant.DeleteContainedEntities");
status = dpf.DeleteParticipant(participant);
ErrorHandler.checkStatus(status, "DDS.DomainParticipantFactory.DeleteParticipant");
}
static void Main(string[] args)
{
if (args.Length != 1)
{
Console.WriteLine("*** [ContentFilteredTopicDataSubscriber] Subscription string not specified");
Console.WriteLine("*** usage : ContentFilteredTopicDataSubscriber <subscription_string>");
Environment.Exit(-1);
}
ITopic topic;
DDSEntityManager mgr = new DDSEntityManager();
String partitionName = "ContentFilteredTopic example";
// Create DomainParticipant
mgr.createParticipant(partitionName);
// Create Type
StockTypeSupport msgTS = new StockTypeSupport();
mgr.registerType(msgTS);
// Create Topic
topic = mgr.createTopic("StockTrackerExclusive", "ContentFilteredTopic");
// ContentFilteredTopic
mgr.createContentFilter("MyStockTopic", topic, args[0]);
Console.WriteLine("=== [ContentFilteredTopicDataSubscriber] Subscription filter : ticker = '{0}'",args[0]);
// create Subscriber
mgr.createSubscriber();
// create DataReader
mgr.createReader("ContentFilteredTopic", true);
// Read Events
IDataReader dreader = mgr.getReader();
StockDataReader WaitSetReader = dreader as StockDataReader;
// Create WaitSet
IWaitSet w = new WaitSet();
// Status Condition
IStatusCondition status;
status = dreader.StatusCondition;
status.SetEnabledStatuses(StatusKind.DataAvailable);
ReturnCode result = ReturnCode.Error;
result = w.AttachCondition(status);
ErrorHandler.checkHandle(status, "DataReader.StatusCondition");
ErrorHandler.checkStatus(result, "WaitSet.AttachCondition");
DDS.ICondition[] conditionList;
DDS.SampleInfo[] infoSeq;
Stock[] stockSeq;
Console.WriteLine("=== [ContentFilteredTopicDataSubscriber] Ready ...");
bool terminate = false;
int count = 0;
while (!terminate && count < 1500)
{
/**
* Wait until data will be available
*/
Duration wait_timeout = new Duration(Duration.InfiniteSec, Duration.InfiniteNanoSec);
conditionList = null;
result = w.Wait(ref conditionList, wait_timeout);
ErrorHandler.checkStatus(result, "WaitSet.Wait");
stockSeq = null;
infoSeq = null;
/**
* Read Data
*/
result = WaitSetReader.Take(ref stockSeq, ref infoSeq, Length.Unlimited, SampleStateKind.Any, ViewStateKind.Any, InstanceStateKind.Any);
ErrorHandler.checkStatus(result, "StockDataReader.Take");
/**
* Display Data
*/
for (int i=0; i < stockSeq.Length; i++)
{
if (infoSeq[i].ValidData)
{
if (stockSeq[i].price == -1)
{
// We read the last expected sample => exit
terminate = true;
break;
}
Console.WriteLine("=== [ContentFilteredTopicDataSubscriber] receives stockQuote : ( {0} , {1} )",
stockSeq[i].ticker, stockSeq[i].price);
}
}
result = WaitSetReader.ReturnLoan(ref stockSeq, ref infoSeq);
ErrorHandler.checkStatus(result, "StockDataReader.ReturnLoan");
Thread.Sleep(200);
++count;
}
Console.WriteLine("=== [ContentFilteredTopicDataSubscriber] Market Closed");
// clean up
mgr.getSubscriber().DeleteDataReader(WaitSetReader);
mgr.deleteSubscriber();
mgr.deleteContentFilteredTopic();
mgr.deleteTopic();
mgr.deleteParticipant();
}
static void subscribe(int domain_id, int sample_count)
{
/* Auxiliary variables */
String odd_string = "'ODD'";
String even_string = "'EVEN'";
// --- Create participant --- //
/* To customize the participant QoS, use
the configuration file USER_QOS_PROFILES.xml */
DDS.DomainParticipant participant =
DDS.DomainParticipantFactory.get_instance().create_participant(
domain_id,
DDS.DomainParticipantFactory.PARTICIPANT_QOS_DEFAULT,
null /* listener */,
DDS.StatusMask.STATUS_MASK_NONE);
if (participant == null) {
shutdown(participant);
throw new ApplicationException("create_participant error");
}
// --- Create subscriber --- //
/* To customize the subscriber QoS, use
the configuration file USER_QOS_PROFILES.xml */
DDS.Subscriber subscriber = participant.create_subscriber(
DDS.DomainParticipant.SUBSCRIBER_QOS_DEFAULT,
null /* listener */,
DDS.StatusMask.STATUS_MASK_NONE);
if (subscriber == null) {
shutdown(participant);
throw new ApplicationException("create_subscriber error");
}
// --- Create topic --- //
/* Register the type before creating the topic */
System.String type_name = waitset_query_condTypeSupport.get_type_name();
try {
waitset_query_condTypeSupport.register_type(
participant, type_name);
}
catch(DDS.Exception e) {
Console.WriteLine("register_type error {0}", e);
shutdown(participant);
throw e;
}
/* To customize the topic QoS, use
the configuration file USER_QOS_PROFILES.xml */
DDS.Topic topic = participant.create_topic(
"Example waitset_query_cond",
type_name,
DDS.DomainParticipant.TOPIC_QOS_DEFAULT,
null /* listener */,
DDS.StatusMask.STATUS_MASK_NONE);
if (topic == null) {
shutdown(participant);
throw new ApplicationException("create_topic error");
}
// --- Create reader --- //
/* To customize the data reader QoS, use
the configuration file USER_QOS_PROFILES.xml */
DDS.DataReader reader = subscriber.create_datareader(
topic,
DDS.Subscriber.DATAREADER_QOS_DEFAULT,
null,
DDS.StatusMask.STATUS_MASK_NONE);
if (reader == null) {
shutdown(participant);
throw new ApplicationException("create_datareader error");
}
waitset_query_condDataReader waitset_query_cond_reader =
(waitset_query_condDataReader)reader;
/* Create query condition */
DDS.StringSeq query_parameters = new DDS.StringSeq(1);
query_parameters.ensure_length(1, 1);
/* The initial value of the parameters is EVEN string */
query_parameters.set_at(0, even_string);
String query_expression = "name MATCH %0";
DDS.QueryCondition query_condition =
waitset_query_cond_reader.create_querycondition(
DDS.SampleStateKind.NOT_READ_SAMPLE_STATE,
DDS.ViewStateKind.ANY_VIEW_STATE,
DDS.InstanceStateKind.ANY_INSTANCE_STATE,
query_expression,
query_parameters);
if (query_condition == null) {
shutdown(participant);
throw new ApplicationException("create_querycondition error");
}
DDS.WaitSet waitset = new DDS.WaitSet();
if (waitset == null) {
shutdown(participant);
throw new ApplicationException("create waitset error");
}
/* Attach Query Conditions */
try {
waitset.attach_condition((DDS.Condition)query_condition);
} catch (DDS.Exception e) {
Console.WriteLine("attach_condition error {0}", e);
shutdown(participant);
throw e;
}
DDS.Duration_t wait_timeout;
wait_timeout.nanosec = (uint)500000000;
wait_timeout.sec = 1;
Console.WriteLine("\n>>>Timeout: {0} sec",
wait_timeout.sec, wait_timeout.nanosec);
Console.WriteLine(">>> Query conditions: name MATCH %0");
Console.WriteLine("\t%0 = {0}", query_parameters.get_at(0));
Console.WriteLine("---------------------------------\n");
// --- Wait for data --- //
/* Main loop */
for (int count=0;
(sample_count == 0) || (count < sample_count);
++count) {
DDS.ConditionSeq active_conditions_seq = new DDS.ConditionSeq();
/* We set a new parameter in the Query Condition after 7 secs */
if (count == 7) {
query_parameters.set_at(0,odd_string);
Console.WriteLine("CHANGING THE QUERY CONDITION");
Console.WriteLine("\n>>> Query conditions: name MATCH %0");
Console.WriteLine("\t%0 = {0}", query_parameters.get_at(0));
Console.WriteLine(">>> We keep one sample in the history");
Console.WriteLine("-------------------------------------\n");
query_condition.set_query_parameters(query_parameters);
}
/* wait() blocks execution of the thread until one or more attached
* Conditions become true, or until a user-specified timeout
* expires.
*/
try {
waitset.wait(active_conditions_seq, wait_timeout);
} catch (DDS.Retcode_Timeout) {
Console.WriteLine("Wait timed out!! No conditions were " +
"triggered.");
continue;
} catch (DDS.Exception e) {
Console.WriteLine("wait error {0}", e);
break;
}
waitset_query_condSeq data_seq = new waitset_query_condSeq();
DDS.SampleInfoSeq info_seq = new DDS.SampleInfoSeq();
bool follow = true;
while (follow) {
try {
waitset_query_cond_reader.take_w_condition(
data_seq, info_seq,
DDS.ResourceLimitsQosPolicy.LENGTH_UNLIMITED,
query_condition);
for (int i = 0; i < data_seq.length; ++i) {
if (!info_seq.get_at(i).valid_data) {
Console.WriteLine("Got metadata");
continue;
}
waitset_query_condTypeSupport.print_data(
data_seq.get_at(i));
}
} catch (DDS.Retcode_NoData) {
/* When there isn't data, the subscriber stop to
* take samples
*/
follow = false;
} finally {
waitset_query_cond_reader.return_loan(data_seq, info_seq);
}
}
}
// --- Shutdown --- //
/* Delete all entities */
shutdown(participant);
}