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487882dbff727bb1d5bb72fa8552aefc8124c1b5
pvAccess/testApp/remote/testRemoteClientImpl.cpp
miha_vitorovic 6db84be16e - Connecting to invalid server (port) now generates an error. 
- Removed usage 'ipAddrToA' from the code. Replaced with 'ipAddrToDottedIP'.
2011-01-10 15:51:35 +01:00

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/* testRemoteClientImpl.cpp */
/* Author: Matej Sekoranja Date: 2011.1.1 */
#include <pvAccess.h>
#include <iostream>
#include <sstream>
#include <showConstructDestruct.h>
#include <lock.h>
#include <standardPVField.h>
#include <memory>
#include <caConstants.h>
#include <timer.h>
#include <blockingUDP.h>
#include <blockingTCP.h>
#include <namedLockPattern.h>
#include <inetAddressUtil.h>
#include <hexDump.h>
#include <remote.h>
#include <channelSearchManager.h>
#include <configuration.h>
using namespace epics::pvData;
using namespace epics::pvAccess;
PVDATA_REFCOUNT_MONITOR_DEFINE(mockChannelProcess);
class ChannelImplProcess : public ChannelProcess
{
private:
ChannelProcessRequester* m_channelProcessRequester;
PVStructure* m_pvStructure;
PVScalar* m_valueField;
private:
~ChannelImplProcess()
{
PVDATA_REFCOUNT_MONITOR_DESTRUCT(mockChannelProcess);
}
public:
ChannelImplProcess(ChannelProcessRequester* channelProcessRequester, PVStructure *pvStructure, PVStructure *pvRequest) :
m_channelProcessRequester(channelProcessRequester), m_pvStructure(pvStructure)
{
PVDATA_REFCOUNT_MONITOR_CONSTRUCT(mockChannelProcess);
PVField* field = pvStructure->getSubField(String("value"));
if (field == 0)
{
Status* noValueFieldStatus = getStatusCreate()->createStatus(STATUSTYPE_ERROR, "no 'value' field");
m_channelProcessRequester->channelProcessConnect(noValueFieldStatus, this);
delete noValueFieldStatus;
// NOTE client must destroy this instance...
// do not access any fields and return ASAP
return;
}
if (field->getField()->getType() != scalar)
{
Status* notAScalarStatus = getStatusCreate()->createStatus(STATUSTYPE_ERROR, "'value' field not scalar type");
m_channelProcessRequester->channelProcessConnect(notAScalarStatus, this);
delete notAScalarStatus;
// NOTE client must destroy this instance….
// do not access any fields and return ASAP
return;
}
m_valueField = static_cast<PVScalar*>(field);
// TODO pvRequest
m_channelProcessRequester->channelProcessConnect(getStatusCreate()->getStatusOK(), this);
}
virtual void process(bool lastRequest)
{
switch (m_valueField->getScalar()->getScalarType())
{
case pvBoolean:
{
// negate
PVBoolean *pvBoolean = static_cast<PVBoolean*>(m_valueField);
pvBoolean->put(!pvBoolean->get());
break;
}
case pvByte:
{
// increment by one
PVByte *pvByte = static_cast<PVByte*>(m_valueField);
pvByte->put(pvByte->get() + 1);
break;
}
case pvShort:
{
// increment by one
PVShort *pvShort = static_cast<PVShort*>(m_valueField);
pvShort->put(pvShort->get() + 1);
break;
}
case pvInt:
{
// increment by one
PVInt *pvInt = static_cast<PVInt*>(m_valueField);
pvInt->put(pvInt->get() + 1);
break;
}
case pvLong:
{
// increment by one
PVLong *pvLong = static_cast<PVLong*>(m_valueField);
pvLong->put(pvLong->get() + 1);
break;
}
case pvFloat:
{
// increment by one
PVFloat *pvFloat = static_cast<PVFloat*>(m_valueField);
pvFloat->put(pvFloat->get() + 1.0f);
break;
}
case pvDouble:
{
// increment by one
PVDouble *pvDouble = static_cast<PVDouble*>(m_valueField);
pvDouble->put(pvDouble->get() + 1.0);
break;
}
case pvString:
{
// increment by one
PVString *pvString = static_cast<PVString*>(m_valueField);
String val = pvString->get();
if (val.empty())
pvString->put("gen0");
else
{
char c = val[0];
c++;
pvString->put("gen" + c);
}
break;
}
default:
// noop
break;
}
m_channelProcessRequester->processDone(getStatusCreate()->getStatusOK());
if (lastRequest)
destroy();
}
virtual void destroy()
{
delete this;
}
};
PVDATA_REFCOUNT_MONITOR_DEFINE(mockChannelGet);
class ChannelImplGet : public ChannelGet
{
private:
ChannelGetRequester* m_channelGetRequester;
PVStructure* m_pvStructure;
BitSet* m_bitSet;
volatile bool m_first;
private:
~ChannelImplGet()
{
PVDATA_REFCOUNT_MONITOR_DESTRUCT(mockChannelGet);
}
public:
ChannelImplGet(ChannelGetRequester* channelGetRequester, PVStructure *pvStructure, PVStructure *pvRequest) :
m_channelGetRequester(channelGetRequester), m_pvStructure(pvStructure),
m_bitSet(new BitSet(pvStructure->getNumberFields())), m_first(true)
{
PVDATA_REFCOUNT_MONITOR_CONSTRUCT(mockChannelGet);
// TODO pvRequest
m_channelGetRequester->channelGetConnect(getStatusCreate()->getStatusOK(), this, m_pvStructure, m_bitSet);
}
virtual void get(bool lastRequest)
{
m_channelGetRequester->getDone(getStatusCreate()->getStatusOK());
if (m_first)
{
m_first = false;
m_bitSet->set(0); // TODO
}
if (lastRequest)
destroy();
}
virtual void destroy()
{
delete m_bitSet;
delete this;
}
};
PVDATA_REFCOUNT_MONITOR_DEFINE(mockChannelPut);
class ChannelImplPut : public ChannelPut
{
private:
ChannelPutRequester* m_channelPutRequester;
PVStructure* m_pvStructure;
BitSet* m_bitSet;
volatile bool m_first;
private:
~ChannelImplPut()
{
PVDATA_REFCOUNT_MONITOR_DESTRUCT(mockChannelPut);
}
public:
ChannelImplPut(ChannelPutRequester* channelPutRequester, PVStructure *pvStructure, PVStructure *pvRequest) :
m_channelPutRequester(channelPutRequester), m_pvStructure(pvStructure),
m_bitSet(new BitSet(pvStructure->getNumberFields())), m_first(true)
{
PVDATA_REFCOUNT_MONITOR_CONSTRUCT(mockChannelPut);
// TODO pvRequest
m_channelPutRequester->channelPutConnect(getStatusCreate()->getStatusOK(), this, m_pvStructure, m_bitSet);
}
virtual void put(bool lastRequest)
{
m_channelPutRequester->putDone(getStatusCreate()->getStatusOK());
if (lastRequest)
destroy();
}
virtual void get()
{
m_channelPutRequester->getDone(getStatusCreate()->getStatusOK());
}
virtual void destroy()
{
delete m_bitSet;
delete this;
}
};
PVDATA_REFCOUNT_MONITOR_DEFINE(mockMonitor);
class MockMonitor : public Monitor, public MonitorElement
{
private:
MonitorRequester* m_monitorRequester;
PVStructure* m_pvStructure;
BitSet* m_changedBitSet;
BitSet* m_overrunBitSet;
volatile bool m_first;
Mutex* m_lock;
volatile int m_count;
private:
~MockMonitor()
{
PVDATA_REFCOUNT_MONITOR_DESTRUCT(mockMonitor);
}
public:
MockMonitor(MonitorRequester* monitorRequester, PVStructure *pvStructure, PVStructure *pvRequest) :
m_monitorRequester(monitorRequester), m_pvStructure(pvStructure),
m_changedBitSet(new BitSet(pvStructure->getNumberFields())),
m_overrunBitSet(new BitSet(pvStructure->getNumberFields())),
m_first(true),
m_lock(new Mutex()),
m_count(0)
{
PVDATA_REFCOUNT_MONITOR_CONSTRUCT(mockMonitor);
m_changedBitSet->set(0);
// TODO pvRequest
m_monitorRequester->monitorConnect(getStatusCreate()->getStatusOK(), this, const_cast<Structure*>(m_pvStructure->getStructure()));
}
virtual Status* start()
{
// fist monitor
m_monitorRequester->monitorEvent(this);
// client needs to delete status, so passing shared OK instance is not right thing to do
return getStatusCreate()->createStatus(STATUSTYPE_OK, "Monitor started.");
}
virtual Status* stop()
{
// client needs to delete status, so passing shared OK instance is not right thing to do
return getStatusCreate()->createStatus(STATUSTYPE_OK, "Monitor stopped.");
}
virtual MonitorElement* poll()
{
Lock xx(m_lock);
if (m_count)
{
return 0;
}
else
{
m_count++;
return this;
}
}
virtual void release(MonitorElement* monitorElement)
{
Lock xx(m_lock);
if (m_count)
m_count--;
}
virtual void destroy()
{
delete stop();
delete m_lock;
delete m_overrunBitSet;
delete m_changedBitSet;
delete this;
}
// ============ MonitorElement ============
virtual PVStructure* getPVStructure()
{
return m_pvStructure;
}
virtual BitSet* getChangedBitSet()
{
return m_changedBitSet;
}
virtual BitSet* getOverrunBitSet()
{
return m_overrunBitSet;
}
};
// TODO consider std::unordered_map
typedef std::map<pvAccessID, ResponseRequest*> IOIDResponseRequestMap;
// TODO log
#define CALLBACK_GUARD(code) try { code } catch(...) { }
class ClientContextImpl;
class DebugResponse : public ResponseHandler, private epics::pvData::NoDefaultMethods {
public:
/**
* @param context
*/
DebugResponse(Context* ctx) :
ResponseHandler(ctx)
{
}
virtual ~DebugResponse() {
}
virtual void handleResponse(osiSockAddr* responseFrom,
Transport* transport, int8 version, int8 command,
int payloadSize, epics::pvData::ByteBuffer* payloadBuffer)
{
char ipAddrStr[48];
std::cout << "ole" << std::endl;
ipAddrToDottedIP(&responseFrom->ia, ipAddrStr,
sizeof(ipAddrStr));
std::cout << "ole2" << std::endl;
ostringstream prologue;
prologue<<"Message [0x"<<hex<<(int)command<<", v0x"<<hex;
prologue<<(int)version<<"] received from "<<ipAddrStr;
std::cout << "ole / " << prologue.str() << std::endl;
hexDump(prologue.str(), "received",
(const int8*)payloadBuffer->getArray(),
payloadBuffer->getPosition(), payloadSize);
}
};
/**
* CA response handler - main handler which dispatches responses to appripriate handlers.
* @author <a href="mailto:matej.sekoranjaATcosylab.com">Matej Sekoranja</a>
* @version $Id: ClientResponseHandler.java,v 1.1 2010/05/03 14:45:40 mrkraimer Exp $
*/
class ClientResponseHandler : public ResponseHandler, private epics::pvData::NoDefaultMethods {
private:
/**
* Table of response handlers for each command ID.
*/
ResponseHandler** m_handlerTable;
/*
* Context instance is part of the response handler now
*/
//ClientContextImpl* m_context;
public:
~ClientResponseHandler() {
delete[] m_handlerTable;
}
/**
* @param context
*/
ClientResponseHandler(ClientContextImpl* context) : ResponseHandler((Context*)context) {
static ResponseHandler* badResponse = new DebugResponse((Context*)context);
static ResponseHandler* dataResponse = 0; //new DataResponseHandler(context);
#define HANDLER_COUNT 28
m_handlerTable = new ResponseHandler*[HANDLER_COUNT];
m_handlerTable[ 0] = badResponse; // TODO new BeaconHandler(context), /* 0 */
m_handlerTable[ 1] = badResponse; // TODO new ConnectionValidationHandler(context), /* 1 */
m_handlerTable[ 2] = badResponse; // TODO new NoopResponse(context, "Echo"), /* 2 */
m_handlerTable[ 3] = badResponse; // TODO new NoopResponse(context, "Search"), /* 3 */
m_handlerTable[ 4] = badResponse; // TODO new SearchResponseHandler(context), /* 4 */
m_handlerTable[ 5] = badResponse; // TODO new NoopResponse(context, "Introspection search"), /* 5 */
m_handlerTable[ 6] = dataResponse; /* 6 - introspection search */
m_handlerTable[ 7] = badResponse; // TODO new CreateChannelHandler(context), /* 7 */
m_handlerTable[ 8] = badResponse; // TODO new NoopResponse(context, "Destroy channel"), /* 8 */ // TODO it might be useful to implement this...
m_handlerTable[ 9] = badResponse; /* 9 */
m_handlerTable[10] = dataResponse; /* 10 - get response */
m_handlerTable[11] = dataResponse; /* 11 - put response */
m_handlerTable[12] = dataResponse; /* 12 - put-get response */
m_handlerTable[13] = dataResponse; /* 13 - monitor response */
m_handlerTable[14] = dataResponse; /* 14 - array response */
m_handlerTable[15] = badResponse; /* 15 - cancel request */
m_handlerTable[16] = dataResponse; /* 16 - process response */
m_handlerTable[17] = dataResponse; /* 17 - get field response */
m_handlerTable[18] = badResponse; // TODO new MessageHandler(context), /* 18 - message to Requester */
m_handlerTable[19] = badResponse; // TODO new MultipleDataResponseHandler(context), /* 19 - grouped monitors */
m_handlerTable[20] = dataResponse; /* 20 - RPC response */
m_handlerTable[21] = badResponse; /* 21 */
m_handlerTable[22] = badResponse; /* 22 */
m_handlerTable[23] = badResponse; /* 23 */
m_handlerTable[24] = badResponse; /* 24 */
m_handlerTable[25] = badResponse; /* 25 */
m_handlerTable[26] = badResponse; /* 26 */
m_handlerTable[27] = badResponse; /* 27 */
}
virtual void handleResponse(osiSockAddr* responseFrom,
Transport* transport, int8 version, int8 command,
int payloadSize, ByteBuffer* payloadBuffer)
{
int c = command+0;
std::cout << "received " << c << std::endl;
if (command < 0 || command >= HANDLER_COUNT)
{
// TODO context.getLogger().fine("Invalid (or unsupported) command: " + command + ".");
std::cout << "Invalid (or unsupported) command: " << command << "." << std::endl;
// TODO remove debug output
char buf[100];
sprintf(buf, "Invalid CA header %d its payload buffer", command);
hexDump(buf, (const int8*)(payloadBuffer->getArray()), payloadBuffer->getPosition(), payloadSize);
return;
}
// delegate
m_handlerTable[c]->handleResponse(responseFrom, transport, version, command, payloadSize, payloadBuffer);
}
};
class TCI : public TransportSendControl {
public:
virtual void flushSerializeBuffer() {
}
virtual void ensureBuffer(int size) {
}
virtual void startMessage(int8 command, int ensureCapacity){}
virtual void endMessage() {}
virtual void flush(bool lastMessageCompleted) {}
virtual void setRecipient(const osiSockAddr& sendTo) {}
};
class BeaconHandlerImpl;
PVDATA_REFCOUNT_MONITOR_DEFINE(channel);
/**
* Context state enum.
*/
enum ContextState {
/**
* State value of non-initialized context.
*/
CONTEXT_NOT_INITIALIZED,
/**
* State value of initialized context.
*/
CONTEXT_INITIALIZED,
/**
* State value of destroyed context.
*/
CONTEXT_DESTROYED
};
class ClientContextImpl : public ClientContext,
public Context /* TODO */
{
/**
* Implementation of CAJ JCA <code>Channel</code>.
* @author <a href="mailto:matej.sekoranjaATcosylab.com">Matej Sekoranja</a>
*/
class ChannelImpl :
public Channel ,
public TransportClient,
public TransportSender,
public BaseSearchInstance {
private:
/**
* Context.
*/
ClientContextImpl* m_context;
/**
* Client channel ID.
*/
pvAccessID m_channelID;
/**
* Channel name.
*/
String m_name;
/**
* Channel requester.
*/
ChannelRequester* m_requester;
/**
* Process priority.
*/
short m_priority;
/**
* List of fixed addresses, if <code<0</code> name resolution will be used.
*/
InetAddrVector* m_addresses;
/**
* Connection status.
*/
ConnectionState m_connectionState;
/**
* List of all channel's pending requests (keys are subscription IDs).
*/
IOIDResponseRequestMap m_responseRequests;
/**
* Allow reconnection flag.
*/
bool m_allowCreation;
/**
* Reference counting.
* NOTE: synced on <code>m_channelMutex</code>.
*/
int m_references;
/* ****************** */
/* CA protocol fields */
/* ****************** */
/**
* Server transport.
*/
Transport* m_transport;
/**
* Server channel ID.
*/
pvAccessID m_serverChannelID;
/**
* Context sync. mutex.
*/
Mutex m_channelMutex;
/**
* Flag indicting what message to send.
*/
bool m_issueCreateMessage;
// TODO mock
PVStructure* m_pvStructure;
private:
~ChannelImpl()
{
PVDATA_REFCOUNT_MONITOR_DESTRUCT(channel);
}
public:
/**
* Constructor.
* @param context
* @param name
* @param listener
* @throws CAException
*/
ChannelImpl(
ClientContextImpl* context,
pvAccessID channelID,
String name,
ChannelRequester* requester,
short priority,
InetAddrVector* addresses) :
m_context(context),
m_channelID(channelID),
m_name(name),
m_requester(requester),
m_priority(priority),
m_addresses(addresses),
m_connectionState(NEVER_CONNECTED),
m_allowCreation(true),
m_references(1),
m_transport(0),
m_serverChannelID(0xFFFFFFFF),
m_issueCreateMessage(true)
{
PVDATA_REFCOUNT_MONITOR_CONSTRUCT(channel);
// register before issuing search request
m_context->registerChannel(this);
// connect
connect();
//
// mock
//
ScalarType stype = pvDouble;
String allProperties("alarm,timeStamp,display,control,valueAlarm");
m_pvStructure = getStandardPVField()->scalar(
0,name,stype,allProperties);
PVDouble *pvField = m_pvStructure->getDoubleField(String("value"));
pvField->put(1.123);
// already connected, report state
m_requester->channelStateChange(this, CONNECTED);
}
virtual void destroy()
{
if (m_addresses) delete m_addresses;
delete m_pvStructure;
delete this;
};
virtual String getRequesterName()
{
return getChannelName();
};
virtual void message(String message,MessageType messageType)
{
std::cout << "[" << getRequesterName() << "] message(" << message << ", " << messageTypeName[messageType] << ")" << std::endl;
}
virtual ChannelProvider* getProvider()
{
return m_context->getProvider();
}
// NOTE: synchronization guarantees that <code>transport</code> is non-<code>null</code> and <code>state == CONNECTED</code>.
virtual epics::pvData::String getRemoteAddress()
{
Lock guard(&m_channelMutex);
if (m_connectionState != CONNECTED) {
static String emptyString;
return emptyString;
}
else
{
return inetAddressToString(m_transport->getRemoteAddress());
}
}
virtual epics::pvData::String getChannelName()
{
return m_name;
}
virtual ChannelRequester* getChannelRequester()
{
return m_requester;
}
virtual ConnectionState getConnectionState()
{
Lock guard(&m_channelMutex);
return m_connectionState;
}
virtual bool isConnected()
{
return getConnectionState() == CONNECTED;
}
virtual AccessRights getAccessRights(epics::pvData::PVField *pvField)
{
return readWrite;
}
/**
* Get client channel ID.
* @return client channel ID.
*/
pvAccessID getChannelID() {
return m_channelID;
}
void connect() {
Lock guard(&m_channelMutex);
// if not destroyed...
if (m_connectionState == DESTROYED)
throw std::runtime_error("Channel destroyed.");
else if (m_connectionState != CONNECTED)
initiateSearch();
}
void disconnect() {
Lock guard(&m_channelMutex);
// if not destroyed...
if (m_connectionState == DESTROYED)
throw std::runtime_error("Channel destroyed.");
else if (m_connectionState == CONNECTED)
disconnect(false, true);
}
/**
* Create a channel, i.e. submit create channel request to the server.
* This method is called after search is complete.
* @param transport
*/
void createChannel(Transport* transport)
{
Lock guard(&m_channelMutex);
// do not allow duplicate creation to the same transport
if (!m_allowCreation)
return;
m_allowCreation = false;
// check existing transport
if (m_transport && m_transport != transport)
{
disconnectPendingIO(false);
ReferenceCountingTransport* rct = dynamic_cast<ReferenceCountingTransport*>(m_transport);
if (rct) rct->release(this);
}
else if (m_transport == transport)
{
// request to sent create request to same transport, ignore
// this happens when server is slower (processing search requests) than client generating it
return;
}
m_transport = transport;
m_transport->enqueueSendRequest(this);
}
virtual void cancel() {
// noop
}
virtual void timeout() {
createChannelFailed();
}
/**
* Create channel failed.
*/
virtual void createChannelFailed()
{
Lock guard(&m_channelMutex);
cancel();
// ... and search again
initiateSearch();
}
/**
* Called when channel created succeeded on the server.
* <code>sid</code> might not be valid, this depends on protocol revision.
* @param sid
*/
void connectionCompleted(pvAccessID sid/*, rights*/)
{
Lock guard(&m_channelMutex);
bool allOK = false;
try
{
// do this silently
if (m_connectionState == DESTROYED)
return;
// store data
m_serverChannelID = sid;
//setAccessRights(rights);
// user might create monitors in listeners, so this has to be done before this can happen
// however, it would not be nice if events would come before connection event is fired
// but this cannot happen since transport (TCP) is serving in this thread
resubscribeSubscriptions();
setConnectionState(CONNECTED);
allOK = true;
}
catch (...) {
// noop
// TODO at least log something??
}
if (!allOK)
{
// end connection request
cancel();
}
}
/**
* @param force force destruction regardless of reference count
*/
void destroy(bool force) {
Lock guard(&m_channelMutex);
if (m_connectionState == DESTROYED)
throw std::runtime_error("Channel already destroyed.");
// do destruction via context
m_context->destroyChannel(this, force);
}
/**
* Increment reference.
*/
void acquire() {
Lock guard(&m_channelMutex);
m_references++;
}
/**
* Actual destroy method, to be called <code>CAJContext</code>.
* @param force force destruction regardless of reference count
* @throws CAException
* @throws IllegalStateException
* @throws IOException
*/
void destroyChannel(bool force) {
Lock guard(&m_channelMutex);
if (m_connectionState == DESTROYED)
throw std::runtime_error("Channel already destroyed.");
m_references--;
if (m_references > 0 && !force)
return;
// stop searching...
m_context->getChannelSearchManager()->unregisterChannel(this);
cancel();
disconnectPendingIO(true);
if (m_connectionState == CONNECTED)
{
disconnect(false, true);
}
else if (m_transport)
{
// unresponsive state, do not forget to release transport
ReferenceCountingTransport* rct = dynamic_cast<ReferenceCountingTransport*>(m_transport);
if (rct) rct->release(this);
m_transport = 0;
}
setConnectionState(DESTROYED);
// unregister
m_context->unregisterChannel(this);
}
/**
* Disconnected notification.
* @param initiateSearch flag to indicate if searching (connect) procedure should be initiated
* @param remoteDestroy issue channel destroy request.
*/
void disconnect(bool initiateSearch, bool remoteDestroy) {
Lock guard(&m_channelMutex);
if (m_connectionState != CONNECTED && !m_transport)
return;
if (!initiateSearch) {
// stop searching...
m_context->getChannelSearchManager()->unregisterChannel(this);
cancel();
}
setConnectionState(DISCONNECTED);
disconnectPendingIO(false);
// release transport
if (m_transport)
{
if (remoteDestroy) {
m_issueCreateMessage = false;
m_transport->enqueueSendRequest(this);
}
ReferenceCountingTransport* rct = dynamic_cast<ReferenceCountingTransport*>(m_transport);
if (rct) rct->release(this);
m_transport = 0;
}
if (initiateSearch)
this->initiateSearch();
}
/**
* Initiate search (connect) procedure.
*/
void initiateSearch()
{
Lock guard(&m_channelMutex);
m_allowCreation = true;
if (!m_addresses)
m_context->getChannelSearchManager()->registerChannel(this);
/* TODO
else
// TODO not only first
// TODO minor version
// TODO what to do if there is no channel, do not search in a loop!!! do this in other thread...!
searchResponse(CAConstants.CA_MINOR_PROTOCOL_REVISION, addresses[0]);
*/
}
virtual void searchResponse(int8 minorRevision, osiSockAddr* serverAddress) {
Lock guard(&m_channelMutex);
Transport* transport = m_transport;
if (transport)
{
// multiple defined PV or reconnect request (same server address)
// TOD !!!! if (!(*(transport->getRemoteAddress()) == *serverAddress))
if (false)
{
m_requester->message("More than one channel with name '" + m_name +
"' detected, additional response from: " + inetAddressToString(serverAddress), warningMessage);
return;
}
}
transport = m_context->getTransport(this, serverAddress, minorRevision, m_priority);
if (!transport)
{
createChannelFailed();
return;
}
// create channel
createChannel(transport);
}
virtual void transportClosed() {
disconnect(true, false);
}
virtual void transportChanged() {
initiateSearch();
}
virtual void transportResponsive(Transport* transport) {
Lock guard(&m_channelMutex);
if (m_connectionState == DISCONNECTED)
{
updateSubscriptions();
// reconnect using existing IDs, data
connectionCompleted(m_serverChannelID/*, accessRights*/);
}
}
void transportUnresponsive() {
Lock guard(&m_channelMutex);
if (m_connectionState == CONNECTED)
{
// NOTE: 2 types of disconnected state - distinguish them
setConnectionState(DISCONNECTED);
// ... CA notifies also w/ no access rights callback, although access right are not changed
}
}
/**
* Set connection state and if changed, notifies listeners.
* @param newState state to set.
*/
void setConnectionState(ConnectionState connectionState)
{
Lock guard(&m_channelMutex);
if (m_connectionState != connectionState)
{
m_connectionState = connectionState;
//bool connectionStatusToReport = (connectionState == CONNECTED);
//if (connectionStatusToReport != lastReportedConnectionState)
{
//lastReportedConnectionState = connectionStatusToReport;
// TODO via dispatcher ?!!!
m_requester->channelStateChange(this, connectionState);
}
}
}
virtual void lock() {
// noop
}
virtual void send(ByteBuffer* buffer, TransportSendControl* control) {
m_channelMutex.lock();
bool issueCreateMessage = m_issueCreateMessage;
m_channelMutex.unlock();
if (issueCreateMessage)
{
control->startMessage((int8)7, 2+4);
// count
buffer->putShort((int16)1);
// array of CIDs and names
buffer->putInt(m_channelID);
SerializeHelper::serializeString(m_name, buffer, control);
// send immediately
// TODO
control->flush(true);
}
else
{
control->startMessage((int8)8, 4+4);
// SID
m_channelMutex.lock();
pvAccessID sid = m_serverChannelID;
m_channelMutex.unlock();
buffer->putInt(sid);
// CID
buffer->putInt(m_channelID);
// send immediately
// TODO
control->flush(true);
}
}
virtual void unlock() {
// noop
}
/**
* Disconnects (destroys) all channels pending IO.
* @param destroy <code>true</code> if channel is being destroyed.
*/
void disconnectPendingIO(bool destroy)
{
// TODO
}
/**
* Resubscribe subscriptions.
*/
// TODO to be called from non-transport thread !!!!!!
void resubscribeSubscriptions()
{
// TODO
}
/**
* Update subscriptions.
*/
// TODO to be called from non-transport thread !!!!!!
void updateSubscriptions()
{
// TODO
}
virtual void getField(GetFieldRequester *requester,epics::pvData::String subField)
{
requester->getDone(getStatusCreate()->getStatusOK(),m_pvStructure->getSubField(subField)->getField());
}
virtual ChannelProcess* createChannelProcess(
ChannelProcessRequester *channelProcessRequester,
epics::pvData::PVStructure *pvRequest)
{
return new ChannelImplProcess(channelProcessRequester, m_pvStructure, pvRequest);
}
virtual ChannelGet* createChannelGet(
ChannelGetRequester *channelGetRequester,
epics::pvData::PVStructure *pvRequest)
{
return new ChannelImplGet(channelGetRequester, m_pvStructure, pvRequest);
}
virtual ChannelPut* createChannelPut(
ChannelPutRequester *channelPutRequester,
epics::pvData::PVStructure *pvRequest)
{
return new ChannelImplPut(channelPutRequester, m_pvStructure, pvRequest);
}
virtual ChannelPutGet* createChannelPutGet(
ChannelPutGetRequester *channelPutGetRequester,
epics::pvData::PVStructure *pvRequest)
{
// TODO
return 0;
}
virtual ChannelRPC* createChannelRPC(ChannelRPCRequester *channelRPCRequester,
epics::pvData::PVStructure *pvRequest)
{
// TODO
return 0;
}
virtual epics::pvData::Monitor* createMonitor(
epics::pvData::MonitorRequester *monitorRequester,
epics::pvData::PVStructure *pvRequest)
{
return new MockMonitor(monitorRequester, m_pvStructure, pvRequest);
}
virtual ChannelArray* createChannelArray(
ChannelArrayRequester *channelArrayRequester,
epics::pvData::PVStructure *pvRequest)
{
// TODO
return 0;
}
virtual void printInfo() {
String info;
printInfo(&info);
std::cout << info.c_str() << std::endl;
}
virtual void printInfo(epics::pvData::StringBuilder out) {
//Lock lock(&m_channelMutex);
//std::ostringstream ostr;
//static String emptyString;
out->append( "CHANNEL : "); out->append(m_name);
out->append("\nSTATE : "); out->append(ConnectionStateNames[m_connectionState]);
if (m_connectionState == CONNECTED)
{
out->append("\nADDRESS : "); out->append(getRemoteAddress());
//out->append("\nRIGHTS : "); out->append(getAccessRights());
}
out->append("\n");
}
};
class ChannelProviderImpl;
class ChannelImplFind : public ChannelFind
{
public:
ChannelImplFind(ChannelProvider* provider) : m_provider(provider)
{
}
virtual void destroy()
{
// one instance for all, do not delete at all
}
virtual ChannelProvider* getChannelProvider()
{
return m_provider;
};
virtual void cancelChannelFind()
{
throw std::runtime_error("not supported");
}
private:
// only to be destroyed by it
friend class ChannelProviderImpl;
virtual ~ChannelImplFind() {}
ChannelProvider* m_provider;
};
class ChannelProviderImpl : public ChannelProvider {
public:
ChannelProviderImpl(ClientContextImpl* context) :
m_context(context) {
}
virtual epics::pvData::String getProviderName()
{
return "ChannelProviderImpl";
}
virtual void destroy()
{
delete this;
}
virtual ChannelFind* channelFind(
epics::pvData::String channelName,
ChannelFindRequester *channelFindRequester)
{
m_context->checkChannelName(channelName);
if (!channelFindRequester)
throw std::runtime_error("null requester");
std::auto_ptr<Status> errorStatus(getStatusCreate()->createStatus(STATUSTYPE_ERROR, "not implemented", 0));
channelFindRequester->channelFindResult(errorStatus.get(), 0, false);
return 0;
}
virtual Channel* createChannel(
epics::pvData::String channelName,
ChannelRequester *channelRequester,
short priority)
{
return createChannel(channelName, channelRequester, priority, emptyString);
}
virtual Channel* createChannel(
epics::pvData::String channelName,
ChannelRequester *channelRequester,
short priority,
epics::pvData::String address)
{
// TODO support addressList
Channel* channel = m_context->createChannelInternal(channelName, channelRequester, priority, 0);
if (channel)
channelRequester->channelCreated(getStatusCreate()->getStatusOK(), channel);
return channel;
// NOTE it's up to internal code to respond w/ error to requester and return 0 in case of errors
}
private:
~ChannelProviderImpl() {};
/* TODO static*/ String emptyString;
ClientContextImpl* m_context;
};
public:
ClientContextImpl() :
m_addressList(""), m_autoAddressList(true), m_connectionTimeout(30.0f), m_beaconPeriod(15.0f),
m_broadcastPort(CA_BROADCAST_PORT), m_receiveBufferSize(MAX_TCP_RECV), m_timer(0),
m_broadcastTransport(0), m_searchTransport(0), m_connector(0), m_transportRegistry(0),
m_namedLocker(0), m_lastCID(0), m_lastIOID(0), m_channelSearchManager(0),
m_version(new Version("CA Client", "cpp", 0, 0, 0, 1)),
m_provider(new ChannelProviderImpl(this)),
m_contextState(CONTEXT_NOT_INITIALIZED), m_configuration(new SystemConfigurationImpl())
{
loadConfiguration();
}
virtual Configuration* getConfiguration() {
return m_configuration;
}
virtual Version* getVersion() {
return m_version;
}
virtual ChannelProvider* getProvider() {
Lock lock(&m_contextMutex);
return m_provider;
}
virtual Timer* getTimer()
{
Lock lock(&m_contextMutex);
return m_timer;
}
virtual TransportRegistry* getTransportRegistry()
{
Lock lock(&m_contextMutex);
return m_transportRegistry;
}
virtual BlockingUDPTransport* getSearchTransport()
{
Lock lock(&m_contextMutex);
return m_searchTransport;
}
virtual void initialize() {
Lock lock(&m_contextMutex);
if (m_contextState == CONTEXT_DESTROYED)
throw std::runtime_error("Context destroyed.");
else if (m_contextState == CONTEXT_INITIALIZED)
throw std::runtime_error("Context already initialized.");
internalInitialize();
m_contextState = CONTEXT_INITIALIZED;
}
virtual void printInfo() {
String info;
printInfo(&info);
std::cout << info.c_str() << std::endl;
}
virtual void printInfo(epics::pvData::StringBuilder out) {
Lock lock(&m_contextMutex);
std::ostringstream ostr;
static String emptyString;
out->append( "CLASS : ::epics::pvAccess::ClientContextImpl");
out->append("\nVERSION : "); out->append(m_version->getVersionString());
out->append("\nADDR_LIST : "); ostr << m_addressList; out->append(ostr.str()); ostr.str(emptyString);
out->append("\nAUTO_ADDR_LIST : "); out->append(m_autoAddressList ? "true" : "false");
out->append("\nCONNECTION_TIMEOUT : "); ostr << m_connectionTimeout; out->append(ostr.str()); ostr.str(emptyString);
out->append("\nBEACON_PERIOD : "); ostr << m_beaconPeriod; out->append(ostr.str()); ostr.str(emptyString);
out->append("\nBROADCAST_PORT : "); ostr << m_broadcastPort; out->append(ostr.str()); ostr.str(emptyString);
out->append("\nRCV_BUFFER_SIZE : "); ostr << m_receiveBufferSize; out->append(ostr.str()); ostr.str(emptyString);
out->append("\nSTATE : ");
switch (m_contextState)
{
case CONTEXT_NOT_INITIALIZED:
out->append("CONTEXT_NOT_INITIALIZED");
break;
case CONTEXT_INITIALIZED:
out->append("CONTEXT_INITIALIZED");
break;
case CONTEXT_DESTROYED:
out->append("CONTEXT_DESTROYED");
break;
default:
out->append("UNKNOWN");
}
out->append("\n");
}
virtual void destroy()
{
m_contextMutex.lock();
if (m_contextState == CONTEXT_DESTROYED)
{
m_contextMutex.unlock();
throw std::runtime_error("Context already destroyed.");
}
// go into destroyed state ASAP
m_contextState = CONTEXT_DESTROYED;
internalDestroy();
}
virtual void dispose()
{
destroy();
}
private:
~ClientContextImpl() {};
void loadConfiguration() {
// TODO
/*
m_addressList = config->getPropertyAsString("EPICS4_CA_ADDR_LIST", m_addressList);
m_autoAddressList = config->getPropertyAsBoolean("EPICS4_CA_AUTO_ADDR_LIST", m_autoAddressList);
m_connectionTimeout = config->getPropertyAsFloat("EPICS4_CA_CONN_TMO", m_connectionTimeout);
m_beaconPeriod = config->getPropertyAsFloat("EPICS4_CA_BEACON_PERIOD", m_beaconPeriod);
m_broadcastPort = config->getPropertyAsInteger("EPICS4_CA_BROADCAST_PORT", m_broadcastPort);
m_receiveBufferSize = config->getPropertyAsInteger("EPICS4_CA_MAX_ARRAY_BYTES", m_receiveBufferSize);
*/
}
void internalInitialize() {
m_timer = new Timer("pvAccess-client timer", lowPriority);
m_connector = new BlockingTCPConnector(this, m_receiveBufferSize, m_beaconPeriod);
m_transportRegistry = new TransportRegistry();
m_namedLocker = new NamedLockPattern<String>();
// setup UDP transport
initializeUDPTransport();
// setup search manager
m_channelSearchManager = new ChannelSearchManager(this);
}
/**
* Initialized UDP transport (broadcast socket and repeater connection).
*/
void initializeUDPTransport() {
// setup UDP transport
try
{
// where to bind (listen) address
osiSockAddr listenLocalAddress;
listenLocalAddress.ia.sin_family = AF_INET;
listenLocalAddress.ia.sin_port = htons(m_broadcastPort);
listenLocalAddress.ia.sin_addr.s_addr = htonl(INADDR_ANY);
// where to send address
InetAddrVector* broadcastAddresses = getSocketAddressList("192.168.1.255", m_broadcastPort);
// TODO getBroadcastAddresses(broadcastPort)
/// TOD !!!! addresses !!!!! by pointer and not copied
BlockingUDPConnector* broadcastConnector = new BlockingUDPConnector(true, broadcastAddresses, true);
m_broadcastTransport = (BlockingUDPTransport*)broadcastConnector->connect(
0, new ClientResponseHandler(this),
listenLocalAddress, CA_MINOR_PROTOCOL_REVISION,
CA_DEFAULT_PRIORITY);
BlockingUDPConnector* searchConnector = new BlockingUDPConnector(false, broadcastAddresses, true);
// undefined address
osiSockAddr undefinedAddress;
undefinedAddress.ia.sin_family = AF_INET;
undefinedAddress.ia.sin_port = htons(0);
undefinedAddress.ia.sin_addr.s_addr = htonl(INADDR_ANY);
m_searchTransport = (BlockingUDPTransport*)searchConnector->connect(
0, new ClientResponseHandler(this),
undefinedAddress, CA_MINOR_PROTOCOL_REVISION,
CA_DEFAULT_PRIORITY);
// set broadcast address list
if (!m_addressList.empty())
{
// if auto is true, add it to specified list
InetAddrVector* appendList = 0;
if (m_autoAddressList)
appendList = m_broadcastTransport->getSendAddresses();
InetAddrVector* list = getSocketAddressList(m_addressList, m_broadcastPort, appendList);
// TODO delete !!!!
if (list && list->size()) {
m_broadcastTransport->setBroadcastAddresses(list);
m_searchTransport->setBroadcastAddresses(list);
}
}
m_broadcastTransport->start();
m_searchTransport->start();
}
catch (...)
{
// TODO
}
}
void internalDestroy() {
// stop searching
if (m_channelSearchManager)
delete m_channelSearchManager; //->destroy();
// stop timer
if (m_timer)
delete m_timer;
//
// cleanup
//
// this will also close all CA transports
destroyAllChannels();
// TODO destroy !!!
if (m_broadcastTransport)
delete m_broadcastTransport; //->destroy(true);
if (m_searchTransport)
delete m_searchTransport; //->destroy(true);
if (m_namedLocker) delete m_namedLocker;
if (m_transportRegistry) delete m_transportRegistry;
if (m_connector) delete m_connector;
if (m_configuration) delete m_configuration;
m_provider->destroy();
delete m_version;
m_contextMutex.unlock();
delete this;
}
void destroyAllChannels() {
// TODO
}
/**
* Check channel name.
*/
void checkChannelName(String& name) {
if (name.empty())
throw std::runtime_error("null or empty channel name");
else if (name.length() > UNREASONABLE_CHANNEL_NAME_LENGTH)
throw std::runtime_error("name too long");
}
/**
* Check context state and tries to establish necessary state.
*/
void checkState() {
Lock lock(&m_contextMutex); // TODO check double-lock?!!!
if (m_contextState == CONTEXT_DESTROYED)
throw std::runtime_error("Context destroyed.");
else if (m_contextState == CONTEXT_NOT_INITIALIZED)
initialize();
}
/**
* Register channel.
* @param channel
*/
void registerChannel(ChannelImpl* channel)
{
Lock guard(&m_cidMapMutex);
m_channelsByCID[channel->getChannelID()] = channel;
}
/**
* Unregister channel.
* @param channel
*/
void unregisterChannel(ChannelImpl* channel)
{
Lock guard(&m_cidMapMutex);
m_channelsByCID.erase(channel->getChannelID());
}
/**
* Searches for a channel with given channel ID.
* @param channelID CID.
* @return channel with given CID, <code>0</code> if non-existent.
*/
ChannelImpl* getChannel(pvAccessID channelID)
{
Lock guard(&m_cidMapMutex);
CIDChannelMap::iterator it = m_channelsByCID.find(channelID);
return (it == m_channelsByCID.end() ? 0 : it->second);
}
/**
* Generate Client channel ID (CID).
* @return Client channel ID (CID).
*/
pvAccessID generateCID()
{
Lock guard(&m_cidMapMutex);
// search first free (theoretically possible loop of death)
while (m_channelsByCID.find(++m_lastCID) != m_channelsByCID.end());
// reserve CID
m_channelsByCID[m_lastCID] = 0;
return m_lastCID;
}
/**
* Free generated channel ID (CID).
*/
void freeCID(int cid)
{
Lock guard(&m_cidMapMutex);
m_channelsByCID.erase(cid);
}
/**
* Get, or create if necessary, transport of given server address.
* @param serverAddress required transport address
* @param priority process priority.
* @return transport for given address
*/
Transport* getTransport(TransportClient* client, osiSockAddr* serverAddress, int16 minorRevision, int16 priority)
{
// TODO !!!
/*
try
{
return connector->connect(client, new ClientResponseHandler(this), serverAddress, minorRevision, priority);
}
catch (ConnectionException cex)
{
logger.log(Level.SEVERE, "Failed to create transport for: " + serverAddress, cex);
}
*/
return 0;
}
/**
* Internal create channel.
*/
// TODO no minor version with the addresses
// TODO what if there is an channel with the same name, but on different host!
Channel* createChannelInternal(String name, ChannelRequester* requester, short priority,
InetAddrVector* addresses) { // TODO addresses
checkState();
checkChannelName(name);
if (requester == 0)
throw std::runtime_error("null requester");
if (priority < ChannelProvider::PRIORITY_MIN || priority > ChannelProvider::PRIORITY_MAX)
throw std::range_error("priority out of bounds");
bool lockAcquired = true; // TODO namedLocker->acquireSynchronizationObject(name, LOCK_TIMEOUT);
if (lockAcquired)
{
try
{
pvAccessID cid = generateCID();
return new ChannelImpl(this, cid, name, requester, priority, addresses);
}
catch(...) {
// TODO
return 0;
}
// TODO namedLocker.releaseSynchronizationObject(name);
}
else
{
// TODO is this OK?
throw std::runtime_error("Failed to obtain synchronization lock for '" + name + "', possible deadlock.");
}
}
/**
* Destroy channel.
* @param channel
* @param force
* @throws CAException
* @throws IllegalStateException
*/
void destroyChannel(ChannelImpl* channel, bool force) {
String name = channel->getChannelName();
bool lockAcquired = true; //namedLocker->acquireSynchronizationObject(name, LOCK_TIMEOUT);
if (lockAcquired)
{
try
{
channel->destroyChannel(force);
}
catch(...) {
// TODO
}
// TODO namedLocker->releaseSynchronizationObject(channel.getChannelName());
}
else
{
// TODO is this OK?
throw std::runtime_error("Failed to obtain synchronization lock for '" + name + "', possible deadlock.");
}
}
/**
* Get channel search manager.
* @return channel search manager.
*/
ChannelSearchManager* getChannelSearchManager() {
return m_channelSearchManager;
}
/**
* A space-separated list of broadcast address for process variable name resolution.
* Each address must be of the form: ip.number:port or host.name:port
*/
String m_addressList;
/**
* Define whether or not the network interfaces should be discovered at runtime.
*/
bool m_autoAddressList;
/**
* If the context doesn't see a beacon from a server that it is connected to for
* connectionTimeout seconds then a state-of-health message is sent to the server over TCP/IP.
* If this state-of-health message isn't promptly replied to then the context will assume that
* the server is no longer present on the network and disconnect.
*/
float m_connectionTimeout;
/**
* Period in second between two beacon signals.
*/
float m_beaconPeriod;
/**
* Broadcast (beacon, search) port number to listen to.
*/
int m_broadcastPort;
/**
* Receive buffer size (max size of payload).
*/
int m_receiveBufferSize;
/**
* Timer.
*/
Timer* m_timer;
/**
* Broadcast transport needed to listen for broadcasts.
*/
BlockingUDPTransport* m_broadcastTransport;
/**
* UDP transport needed for channel searches.
*/
BlockingUDPTransport* m_searchTransport;
/**
* CA connector (creates CA virtual circuit).
*/
BlockingTCPConnector* m_connector;
/**
* CA transport (virtual circuit) registry.
* This registry contains all active transports - connections to CA servers.
*/
TransportRegistry* m_transportRegistry;
/**
* Context instance.
*/
NamedLockPattern<String>* m_namedLocker;
/**
* Context instance.
*/
static const int LOCK_TIMEOUT = 20 * 1000; // 20s
/**
* Map of channels (keys are CIDs).
*/
// TODO consider std::unordered_map
typedef std::map<pvAccessID, ChannelImpl*> CIDChannelMap;
CIDChannelMap m_channelsByCID;
/**
* CIDChannelMap mutex.
*/
Mutex m_cidMapMutex;
/**
* Last CID cache.
*/
pvAccessID m_lastCID;
/**
* Map of pending response requests (keys are IOID).
*/
// TODO consider std::unordered_map
typedef std::map<pvAccessID, ResponseRequest*> IOIDResponseRequestMap;
IOIDResponseRequestMap m_pendingResponseRequests;
/**
* Last IOID cache.
*/
pvAccessID m_lastIOID;
/**
* Channel search manager.
* Manages UDP search requests.
*/
ChannelSearchManager* m_channelSearchManager;
/**
* Beacon handler map.
*/
// TODO consider std::unordered_map
typedef std::map<osiSockAddr, BeaconHandlerImpl*> AddressBeaconHandlerMap;
AddressBeaconHandlerMap m_beaconHandlers;
/**
* Version.
*/
Version* m_version;
/**
* Provider implementation.
*/
ChannelProviderImpl* m_provider;
/**
* Context state.
*/
ContextState m_contextState;
/**
* Context sync. mutex.
*/
Mutex m_contextMutex;
friend class ChannelProviderImpl;
Configuration* m_configuration;
};
class ChannelFindRequesterImpl : public ChannelFindRequester
{
virtual void channelFindResult(epics::pvData::Status *status,ChannelFind *channelFind,bool wasFound)
{
std::cout << "[ChannelFindRequesterImpl] channelFindResult("
<< status->toString() << ", ..., " << wasFound << ")" << std::endl;
}
};
class ChannelRequesterImpl : public ChannelRequester
{
virtual String getRequesterName()
{
return "ChannelRequesterImpl";
};
virtual void message(String message,MessageType messageType)
{
std::cout << "[" << getRequesterName() << "] message(" << message << ", " << messageTypeName[messageType] << ")" << std::endl;
}
virtual void channelCreated(epics::pvData::Status* status, Channel *channel)
{
std::cout << "channelCreated(" << status->toString() << ", "
<< (channel ? channel->getChannelName() : "(null)") << ")" << std::endl;
}
virtual void channelStateChange(Channel *c, ConnectionState connectionState)
{
std::cout << "channelStateChange(" << c->getChannelName() << ", " << ConnectionStateNames[connectionState] << ")" << std::endl;
}
};
class GetFieldRequesterImpl : public GetFieldRequester
{
virtual String getRequesterName()
{
return "GetFieldRequesterImpl";
};
virtual void message(String message,MessageType messageType)
{
std::cout << "[" << getRequesterName() << "] message(" << message << ", " << messageTypeName[messageType] << ")" << std::endl;
}
virtual void getDone(epics::pvData::Status *status,epics::pvData::FieldConstPtr field)
{
std::cout << "getDone(" << status->toString() << ", ";
if (field)
{
String str;
field->toString(&str);
std::cout << str;
}
else
std::cout << "(null)";
std::cout << ")" << std::endl;
}
};
class ChannelGetRequesterImpl : public ChannelGetRequester
{
ChannelGet *m_channelGet;
epics::pvData::PVStructure *m_pvStructure;
epics::pvData::BitSet *m_bitSet;
virtual String getRequesterName()
{
return "ChannelGetRequesterImpl";
};
virtual void message(String message,MessageType messageType)
{
std::cout << "[" << getRequesterName() << "] message(" << message << ", " << messageTypeName[messageType] << ")" << std::endl;
}
virtual void channelGetConnect(epics::pvData::Status *status,ChannelGet *channelGet,
epics::pvData::PVStructure *pvStructure,epics::pvData::BitSet *bitSet)
{
std::cout << "channelGetConnect(" << status->toString() << ")" << std::endl;
// TODO sync
m_channelGet = channelGet;
m_pvStructure = pvStructure;
m_bitSet = bitSet;
}
virtual void getDone(epics::pvData::Status *status)
{
std::cout << "getDone(" << status->toString() << ")" << std::endl;
String str;
m_pvStructure->toString(&str);
std::cout << str;
std::cout << std::endl;
}
};
class ChannelPutRequesterImpl : public ChannelPutRequester
{
ChannelPut *m_channelPut;
epics::pvData::PVStructure *m_pvStructure;
epics::pvData::BitSet *m_bitSet;
virtual String getRequesterName()
{
return "ChannelPutRequesterImpl";
};
virtual void message(String message,MessageType messageType)
{
std::cout << "[" << getRequesterName() << "] message(" << message << ", " << messageTypeName[messageType] << ")" << std::endl;
}
virtual void channelPutConnect(epics::pvData::Status *status,ChannelPut *channelPut,
epics::pvData::PVStructure *pvStructure,epics::pvData::BitSet *bitSet)
{
std::cout << "channelPutConnect(" << status->toString() << ")" << std::endl;
// TODO sync
m_channelPut = channelPut;
m_pvStructure = pvStructure;
m_bitSet = bitSet;
}
virtual void getDone(epics::pvData::Status *status)
{
std::cout << "getDone(" << status->toString() << ")" << std::endl;
String str;
m_pvStructure->toString(&str);
std::cout << str;
std::cout << std::endl;
}
virtual void putDone(epics::pvData::Status *status)
{
std::cout << "putDone(" << status->toString() << ")" << std::endl;
String str;
m_pvStructure->toString(&str);
std::cout << str;
std::cout << std::endl;
}
};
class MonitorRequesterImpl : public MonitorRequester
{
virtual String getRequesterName()
{
return "MonitorRequesterImpl";
};
virtual void message(String message,MessageType messageType)
{
std::cout << "[" << getRequesterName() << "] message(" << message << ", " << messageTypeName[messageType] << ")" << std::endl;
}
virtual void monitorConnect(Status* status, Monitor* monitor, Structure* structure)
{
std::cout << "monitorConnect(" << status->toString() << ")" << std::endl;
if (structure)
{
String str;
structure->toString(&str);
std::cout << str << std::endl;
}
}
virtual void monitorEvent(Monitor* monitor)
{
std::cout << "monitorEvent" << std::endl;
MonitorElement* element = monitor->poll();
String str("changed/overrun ");
element->getChangedBitSet()->toString(&str);
str += '/';
element->getOverrunBitSet()->toString(&str);
str += '\n';
element->getPVStructure()->toString(&str);
std::cout << str << std::endl;
monitor->release(element);
}
virtual void unlisten(Monitor* monitor)
{
std::cout << "unlisten" << std::endl;
}
};
class ChannelProcessRequesterImpl : public ChannelProcessRequester
{
ChannelProcess *m_channelProcess;
virtual String getRequesterName()
{
return "ProcessRequesterImpl";
};
virtual void message(String message,MessageType messageType)
{
std::cout << "[" << getRequesterName() << "] message(" << message << ", " << messageTypeName[messageType] << ")" << std::endl;
}
virtual void channelProcessConnect(epics::pvData::Status *status,ChannelProcess *channelProcess)
{
std::cout << "channelProcessConnect(" << status->toString() << ")" << std::endl;
// TODO sync
m_channelProcess = channelProcess;
}
virtual void processDone(epics::pvData::Status *status)
{
std::cout << "processDone(" << status->toString() << ")" << std::endl;
}
};
int main(int argc,char *argv[])
{
ClientContextImpl* context = new ClientContextImpl();
context->printInfo();
context->initialize();
context->printInfo();
epicsThreadSleep ( 1.0 );
//ChannelFindRequesterImpl findRequester;
//context->getProvider()->channelFind("something", &findRequester);
ChannelRequesterImpl channelRequester;
Channel* channel = context->getProvider()->createChannel("structureArrayTest", &channelRequester);
channel->printInfo();
/*
GetFieldRequesterImpl getFieldRequesterImpl;
channel->getField(&getFieldRequesterImpl, "timeStamp.secondsPastEpoch");
ChannelGetRequesterImpl channelGetRequesterImpl;
ChannelGet* channelGet = channel->createChannelGet(&channelGetRequesterImpl, 0);
channelGet->get(false);
channelGet->destroy();
ChannelPutRequesterImpl channelPutRequesterImpl;
ChannelPut* channelPut = channel->createChannelPut(&channelPutRequesterImpl, 0);
channelPut->get();
channelPut->put(false);
channelPut->destroy();
MonitorRequesterImpl monitorRequesterImpl;
Monitor* monitor = channel->createMonitor(&monitorRequesterImpl, 0);
Status* status = monitor->start();
std::cout << "monitor->start() = " << status->toString() << std::endl;
delete status;
ChannelProcessRequesterImpl channelProcessRequester;
ChannelProcess* channelProcess = channel->createChannelProcess(&channelProcessRequester, 0);
channelProcess->process(false);
channelProcess->destroy();
status = monitor->stop();
std::cout << "monitor->stop() = " << status->toString() << std::endl;
delete status;
monitor->destroy();
*/
epicsThreadSleep ( 10.0 );
channel->destroy();
context->destroy();
std::cout << "-----------------------------------------------------------------------" << std::endl;
getShowConstructDestruct()->constuctDestructTotals(stdout);
return(0);
}
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