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CMSConnection.cpp
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CMSConnection.cpp
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/*
* Copyright 2007-2024 United States Government as represented by the
* Administrator of The National Aeronautics and Space Administration.
* No copyright is claimed in the United States under Title 17, U.S. Code.
* All Rights Reserved.
*/
/**
* @file CMSConnection.cpp
*
* Contains the implementation for the ActiveMQ/Artemis implementation of ConnectionInterface.
*/
#include "CMSConnection.h"
#include "CMSDestination.h"
#include <gmsec5/ConfigOptions.h>
#include <gmsec5/internal/InternalConnection.h>
#include <gmsec5/internal/InternalMessageFactory.h>
#include <gmsec5/internal/MessageBuddy.h>
#include <gmsec5/internal/Middleware.h>
#include <gmsec5/internal/Rawbuf.h>
#include <gmsec5/internal/StringUtil.h>
#include <gmsec5/Connection.h>
#include <gmsec5/GmsecException.h>
#include <gmsec5/util/Log.h>
#include <activemq/commands/BrokerInfo.h>
#include <activemq/core/ActiveMQConnection.h>
#include <activemq/library/ActiveMQCPP.h>
#include <decaf/lang/System.h>
#include <decaf/lang/Long.h>
#include <decaf/util/Random.h>
#include <sstream>
#include <string>
#include <vector>
#define CMS_TYPE_PUBLISH "PUBLISH"
#define CMS_TYPE_REQUEST "REQUEST"
#define CMS_TYPE_REPLY "REPLY"
#define CMS_TYPE_UNSET "UNSET"
/**
* @def GMSEC_PROP_TYPES
* Since CMS does not provide a way to determine property
* types, this property stores the encoding
*/
#define GMSEC_PROP_TYPES "GTYPES"
/**
* @def GMSEC_SUBJECT_PROPERTY
* The CMS message property used for the GMSEC message subject.
*/
#define GMSEC_SUBJECT_PROPERTY "GMSEC-SUBJECT"
using namespace gmsec::api5;
using namespace gmsec::api5::internal;
using namespace gmsec::api5::util;
using namespace gmsec_amqcms;
static Field::Type lookupFieldType(const char* fieldTypeStr)
{
Field::Type type;
bool error = false;
switch (fieldTypeStr[0])
{
case 'B':
if (StringUtil::stringEquals(fieldTypeStr, "BOOL") || StringUtil::stringEquals(fieldTypeStr, "BOOLEAN"))
{
type = Field::Type::BOOL;
}
else if (StringUtil::stringEquals(fieldTypeStr, "BIN"))
{
type = Field::Type::BINARY;
}
else
{
error = true;
}
break;
case 'C':
if (StringUtil::stringEquals(fieldTypeStr, "CHAR"))
{
type = Field::Type::CHAR;
}
else
{
error = true;
}
break;
case 'D':
if (StringUtil::stringEquals(fieldTypeStr, "DOUBLE"))
{
type = Field::Type::F64;
}
else
{
error = true;
}
break;
case 'F':
if (StringUtil::stringEquals(fieldTypeStr, "F32") || StringUtil::stringEquals(fieldTypeStr, "FLOAT"))
{
type = Field::Type::F32;
}
else if (StringUtil::stringEquals(fieldTypeStr, "F64"))
{
type = Field::Type::F64;
}
else
{
error = true;
}
break;
case 'I':
if (StringUtil::stringEquals(fieldTypeStr, "I16"))
{
type = Field::Type::I16;
}
else if (StringUtil::stringEquals(fieldTypeStr, "I32"))
{
type = Field::Type::I32;
}
else if (StringUtil::stringEquals(fieldTypeStr, "I64"))
{
type = Field::Type::I64;
}
else if (StringUtil::stringEquals(fieldTypeStr, "I8"))
{
type = Field::Type::I8;
}
else
{
error = true;
}
break;
case 'L':
if (StringUtil::stringEquals(fieldTypeStr, "LONG"))
{
type = Field::Type::I32;
}
else
{
error = true;
}
break;
case 'S':
if (StringUtil::stringEquals(fieldTypeStr, "STRING"))
{
type = Field::Type::STRING;
}
else if (StringUtil::stringEquals(fieldTypeStr, "SHORT"))
{
type = Field::Type::I16;
}
else
{
error = true;
}
break;
case 'U':
if (StringUtil::stringEquals(fieldTypeStr, "U16") || StringUtil::stringEquals(fieldTypeStr, "USHORT"))
{
type = Field::Type::U16;
}
else if (StringUtil::stringEquals(fieldTypeStr, "U32") || StringUtil::stringEquals(fieldTypeStr, "ULONG"))
{
type = Field::Type::U32;
}
else if (StringUtil::stringEquals(fieldTypeStr, "U64"))
{
type = Field::Type::U64;
}
else if (StringUtil::stringEquals(fieldTypeStr, "U8"))
{
type = Field::Type::U8;
}
else
{
error = true;
}
break;
default:
error = true;
break;
}
if (error)
{
std::ostringstream oss;
oss << "Unknown Field Type: " << fieldTypeStr;
GMSEC_VERBOSE << oss.str().c_str();
throw GmsecException(FIELD_ERROR, UNKNOWN_FIELD_TYPE, oss.str().c_str());
}
return type;
}
static Message::Kind lookupMessageKind(const char* msgTypeStr)
{
Message::Kind kind;
if (StringUtil::stringEqualsIgnoreCase(msgTypeStr, CMS_TYPE_PUBLISH))
{
kind = Message::Kind::PUBLISH;
}
else if (StringUtil::stringEqualsIgnoreCase(msgTypeStr, CMS_TYPE_REQUEST))
{
kind = Message::Kind::REQUEST;
}
else if (StringUtil::stringEqualsIgnoreCase(msgTypeStr, CMS_TYPE_REPLY))
{
kind = Message::Kind::REPLY;
}
else
{
std::ostringstream oss;
oss << "Unknown message kind: " << msgTypeStr;
GMSEC_VERBOSE << oss.str().c_str();
throw GmsecException(MSG_ERROR, UNKNOWN_MSG_TYPE, oss.str().c_str());
}
return kind;
}
/**
* @brief the generic listener for all subscriptions.
* As each message arrives, it is placed on the (synchronized) queue.
*/
class TopicListener : public cms::MessageListener
{
public:
TopicListener(CMSConnection* connection, CMSConnection::MessageQueue& q)
: connection(connection), queue(q), logStackTrace(false) { }
~TopicListener() throw () { }
virtual void onMessage(const cms::Message* cmsMsg) throw ()
{
try
{
Message* tmp;
connection->unload(cmsMsg, tmp);
StdUniquePtr<Message> gmsecMsg;
gmsecMsg.reset(tmp);
if (gmsecMsg.get() != NULL)
{
if (gmsecMsg->getKind() == Message::Kind::REPLY)
{
connection->getExternal().onReply(new Message(*gmsecMsg.get()));
}
queue.put(gmsecMsg.release());
}
}
catch (const GmsecException& e)
{
GMSEC_WARNING << "ActiveMQ TopicListener: " << e.what();
}
catch (const cms::CMSException& e)
{
std::string extra;
if (logStackTrace)
{
extra = "\n" + e.getStackTraceString();
}
GMSEC_WARNING << "ActiveMQ TopicListener: " << e.what() << extra.c_str();
}
catch (const decaf::lang::Exception& e)
{
std::string extra;
if (logStackTrace)
{
extra = "\n" + e.getStackTraceString();
}
GMSEC_WARNING << "ActiveMQ TopicListener: " << e.what() << extra.c_str();
}
}
void setStackTrace (bool state)
{
logStackTrace = state;
}
private:
std::string getInfo(const cms::Message *m)
{
const cms::Destination *destination = m->getCMSDestination();
int type = destination->getDestinationType();
Rawbuf<256> buffer;
if (type == cms::Destination::TOPIC || type == cms::Destination::TEMPORARY_TOPIC)
{
buffer.stream() << (type == cms::Destination::TOPIC ? "topic" : "temporary topic");
const cms::Topic *tmp = dynamic_cast<const cms::Topic*>(destination);
if (tmp)
{
buffer.stream() << ": " << tmp->getTopicName();
}
}
else if (type == cms::Destination::QUEUE || type == cms::Destination::TEMPORARY_QUEUE)
{
const cms::Queue *tmp = dynamic_cast<const cms::Queue*>(destination);
buffer.stream() << (type == cms::Destination::QUEUE ? "queue" : "temporary queue");
if (tmp)
{
buffer.stream() << ": " << tmp->getQueueName();
}
}
else
{
buffer.stream() << "type=" << type;
}
return buffer.str();
}
CMSConnection* connection;
CMSConnection::MessageQueue& queue;
bool logStackTrace;
};
gmsec_amqcms::SubscriptionInfo::SubscriptionInfo(cms::MessageConsumer* c)
: consumer(c),
extra(0)
{
}
gmsec_amqcms::SubscriptionInfo::~SubscriptionInfo()
{
try
{
consumer->stop();
delete consumer->getMessageListener();
delete consumer;
delete extra;
}
catch (const cms::CMSException& e)
{
e.printStackTrace();
}
}
void gmsec_amqcms::SubscriptionInfo::setExtra(SubscriptionInfo *info)
{
extra = info;
}
CMSTransportListener::CMSTransportListener(CMSConnection* conn, bool issueFailoverEvents)
: connection(conn),
failoverEvents(issueFailoverEvents)
{
}
CMSTransportListener::~CMSTransportListener()
{
connection = 0;
}
void CMSTransportListener::onCommand(const decaf::lang::Pointer<activemq::commands::Command> command)
{
if (command->isBrokerInfo())
{
const activemq::commands::BrokerInfo* brokerInfo = dynamic_cast<const activemq::commands::BrokerInfo*>(command.get());
if (brokerInfo != NULL)
{
GMSEC_VERBOSE << "Connected to: " << brokerInfo->getBrokerURL().c_str();
connection->getExternal().setConnectionEndpoint(brokerInfo->getBrokerURL());
}
}
}
void CMSTransportListener::transportInterrupted()
{
if (connection)
{
Status status1(CONNECTION_ERROR, CONNECTION_LOST, "Connection broken");
GMSEC_WARNING << status1.get();
connection->getExternal().dispatchEvent(Connection::Event::CONNECTION_BROKEN_EVENT, status1);
if (failoverEvents)
{
Status status2(CONNECTION_ERROR, CONNECTION_RECONNECT, "Attempting to reconnect");
GMSEC_WARNING << status2.get();
connection->getExternal().dispatchEvent(Connection::Event::CONNECTION_RECONNECT_EVENT, status2);
}
}
}
void CMSTransportListener::transportResumed()
{
if (connection)
{
Status status(NO_ERROR_CLASS, CONNECTION_CONNECTED, "Connection established");
GMSEC_INFO << status.get();
connection->getExternal().dispatchEvent(Connection::Event::CONNECTION_SUCCESSFUL_EVENT, status);
}
}
CMSExceptionListener::CMSExceptionListener(CMSConnection* conn)
: connection(conn)
{
}
CMSExceptionListener::~CMSExceptionListener()
{
connection = 0;
}
void CMSExceptionListener::onException(const cms::CMSException& e)
{
if (connection)
{
Status status(CONNECTION_ERROR, OTHER_ERROR_CODE, e.what());
GMSEC_ERROR << status.get();
connection->getExternal().dispatchEvent(Connection::Event::CONNECTION_EXCEPTION_EVENT, status);
}
}
class CMSMiddleware : public Middleware
{
public:
CMSMiddleware()
{
activemq::library::ActiveMQCPP::initializeLibrary();
}
~CMSMiddleware()
{
try
{
activemq::library::ActiveMQCPP::shutdownLibrary();
}
catch (const decaf::lang::Exception& e)
{
GMSEC_ERROR << "Unable to finalize ActiveMQ CPP library: " << e.what();
}
}
};
static Mutex &getClassMutex()
{
static Mutex mutex;
return mutex;
}
CMSConnection::CMSConnection(const Config& config)
: m_cmsFactory(),
m_connection(),
m_session(),
m_requestReplyDestination(),
m_requestReplyProducer(),
m_replyConsumer(),
m_subscriptions(),
m_queue(MessageQueue::MAX_QUEUE_SIZE),
m_uniqueFilter(),
m_brokerURI(),
m_connClientId(),
m_username(),
m_password(),
m_keystore(),
m_keystorePassword(),
m_truststore(),
m_truststorePassword(),
m_useFilter(true),
m_reportFailoverEvent(false),
m_requestSpecs(),
m_mwinfo(),
m_transportListener(0),
m_exceptionListener(0)
{
static bool initialized = false;
if (!initialized)
{
AutoMutex hold(getClassMutex());
if (!initialized)
{
try
{
Middleware::addMiddleware(ACTIVEMQVERSIONSTRING, new CMSMiddleware());
initialized = true;
}
catch (const decaf::lang::Exception& e)
{
GMSEC_ERROR << "Unable to initialize ActiveMQCPP library : " << e.what();
throw GmsecException(MIDDLEWARE_ERROR, INVALID_CONNECTION, e.what());
}
}
}
// Deduce the URI
const char* defaultURI = "tcp://127.0.0.1:61616";
m_brokerURI = config.getValue(GMSEC_MIDDLEWARE_SERVER, "");
if (m_brokerURI.empty())
{
// URI not provided; check legacy configuration option
m_brokerURI = config.getValue(GMSEC_SERVER, defaultURI);
}
// Check if failover support is being requested
std::string serverValue = StringUtil::stringToLower(m_brokerURI);
size_t pos = serverValue.find("failover");
m_reportFailoverEvent = (pos != std::string::npos);
// Try to get the clientID for the cms::Connection
m_connClientId = config.getValue(AMQ_CONNECTION_CLIENT_ID, m_connClientId.c_str());
m_username = config.getValue(AMQ_USERNAME, m_username.c_str());
m_password = config.getValue(AMQ_PASSWORD, m_password.c_str());
m_keystore = config.getValue(AMQ_SSL_KEYSTORE, m_keystore.c_str());
m_keystorePassword = config.getValue(AMQ_SSL_KEYSTORE_PW, m_keystorePassword.c_str());
m_truststore = config.getValue(AMQ_SSL_TRUSTSTORE, m_truststore.c_str());
m_truststorePassword = config.getValue(AMQ_SSL_TRUSTSTORE_PW, m_truststorePassword.c_str());
// Check if a user is using legacy-style spelling of keystore and truststore password configuration options
if (!m_keystore.empty() && m_keystorePassword.empty())
{
m_keystorePassword = config.getValue("mw-keystorepassword", m_keystorePassword.c_str());
}
if (!m_truststore.empty() && m_truststorePassword.empty())
{
m_truststorePassword = config.getValue("mw-truststorepassword", m_truststorePassword.c_str());
}
std::string filterToggle = config.getValue(AMQ_FILTER_DUPLICATE_MSGS, "");
m_useFilter = filterToggle.empty() || StringUtil::stringEqualsIgnoreCase(filterToggle.c_str(), "yes");
if (!m_keystore.empty() && !m_keystorePassword.empty())
{
decaf::lang::System::setProperty("decaf.net.ssl.keyStore", m_keystore);
decaf::lang::System::setProperty("decaf.net.ssl.keyStorePassword", m_keystorePassword);
}
if (!m_truststore.empty())
{
decaf::lang::System::setProperty("decaf.net.ssl.trustStore", m_truststore);
if (!m_truststorePassword.empty())
{
decaf::lang::System::setProperty("decaf.net.ssl.trustStorePassword", m_truststorePassword);
}
}
}
CMSConnection::~CMSConnection()
{
cleanup();
}
/*
Remove all of the active subscriptions and messages which have been
received. Close Sessions/Connection.
*/
void CMSConnection::cleanup()
{
if (m_connection.get() == NULL)
{
return;
}
try
{
if (m_replyConsumer.get())
{
m_replyConsumer->stop();
delete m_replyConsumer->getMessageListener();
m_replyConsumer.reset();
}
if (m_session.get())
{
m_session->stop();
m_session->close();
m_session.reset();
}
m_requestReplyDestination.reset();
m_requestReplyProducer.reset();
if (m_connection.get())
{
m_connection->stop();
m_connection->close();
m_connection.reset();
}
m_exceptionListener.reset();
m_transportListener.reset();
for (std::map<std::string, gmsec_amqcms::SubscriptionInfo*>::iterator i = m_subscriptions.begin(); i != m_subscriptions.end(); ++i)
{
delete i->second;
}
m_subscriptions.clear();
}
catch (const cms::CMSException& e)
{
e.printStackTrace();
}
// Destroy messages remaining in the queue
while (!m_queue.empty())
{
Message* msg = m_queue.take();
delete msg;
}
m_transportListener.release();
m_exceptionListener.release();
Status tmpStatus(NO_ERROR_CLASS, CONNECTION_LOST, "Connection disconnected");
GMSEC_INFO << tmpStatus.get();
getExternal().dispatchEvent(Connection::Event::CONNECTION_BROKEN_EVENT, tmpStatus);
}
const char* CMSConnection::getLibraryVersion()
{
return ACTIVEMQVERSIONSTRING;
}
const char* CMSConnection::getMWInfo()
{
if (m_mwinfo.empty())
{
std::ostringstream strm;
if (m_connection.get() != NULL)
{
#ifdef WIN32
// The CMS::Connection::getClientID() returns an std::string from the
// ActiveMQ C++ library; the returned string may not be able to be
// deallocated by this middleware wrapper library when operating under
// Windoze, so we avoid calling it, and instead, use m_connClientId (if
// available).
//
strm << getLibraryRootName();
if (!m_connClientId.empty())
{
strm << ": " << m_connClientId.c_str();
}
#else
strm << getLibraryRootName() << ": " << m_connection->getClientID();
#endif
}
else
{
strm << getLibraryRootName() << ": <no client ID... no connection>";
}
m_mwinfo = strm.str();
}
return m_mwinfo.c_str();
}
static void handleCmsException(const cms::CMSException& e)
{
// check if this is an invalid access exception
std::string message = e.what(); // call on method that does NOT return an std::string!!!
size_t p = message.find("Message: User name or password is invalid.");
if (p != std::string::npos)
{
// skip the "Message: "
size_t from = p + 9;
// drop after "Cause: "
size_t to = message.find("Cause: ");
if (to == std::string::npos)
{
to = message.length();
}
message = message.substr(from, to - from);
throw GmsecException(POLICY_ERROR, USER_ACCESS_INVALID, message.c_str());
}
else
{
std::ostringstream oss;
oss << "Error connecting to middleware broker [" << message << "]";
throw GmsecException(MIDDLEWARE_ERROR, CUSTOM_ERROR_CODE, INVALID_CONNECTION, oss.str().c_str());
}
}
void CMSConnection::mwConnect()
{
// Initialize the request specs
m_requestSpecs = getExternal().getRequestSpecs();
try
{
// ensure we are connected to broker
if (!m_cmsFactory.get())
{
m_cmsFactory.reset(cms::ConnectionFactory::createCMSConnectionFactory(m_brokerURI));
}
if (!m_username.empty() && !m_password.empty())
{
m_connection.reset(m_cmsFactory->createConnection(m_username, m_password));
}
else
{
if (!m_reportFailoverEvent)
{
int maxRetries = getExternal().getMaxConnectionRetries();
int retryInterval = getExternal().getConnectionRetryInterval();
int triesRemaining = maxRetries;
bool haveError = false;
do
{
try
{
m_connection.reset(m_cmsFactory->createConnection());
haveError = false;
}
catch (const cms::CMSException& e)
{
haveError = true;
if (maxRetries == -1 || --triesRemaining > 0)
{
GMSEC_WARNING << "Failed to connect; will retry... [tries remaining: " << triesRemaining << "]";
TimeUtil::millisleep(retryInterval);
}
else
{
handleCmsException(e);
}
}
} while (haveError && (maxRetries == -1 || triesRemaining >= 0));
}
else
{
GMSEC_INFO << "Waiting to connect...";
m_connection.reset(m_cmsFactory->createConnection());
}
}
// Set the clientID (Needed for durable subscribers to persist between Connections)
if (!m_connClientId.empty())
{
m_connection->setClientID(m_connClientId);
}
m_exceptionListener.reset(new CMSExceptionListener(this));
m_connection->setExceptionListener(m_exceptionListener.get());
activemq::core::ActiveMQConnection* amqConnection = dynamic_cast<activemq::core::ActiveMQConnection*>(m_connection.get());
if (amqConnection)
{
m_transportListener.reset(new CMSTransportListener(this, m_reportFailoverEvent));
amqConnection->addTransportListener(m_transportListener.get());
}
m_ackMode = getExternal().getConfig().getIntegerValue(AMQ_ACK_MODE, static_cast<int>(cms::Session::AUTO_ACKNOWLEDGE));
if (m_ackMode < static_cast<int>(cms::Session::AUTO_ACKNOWLEDGE) || m_ackMode > static_cast<int>(cms::Session::INDIVIDUAL_ACKNOWLEDGE))
{
GMSEC_WARNING << "Illegal value given for " << AMQ_ACK_MODE << "; defaulting to AUTO_ACKNOWLEDGE (0)";
m_ackMode = static_cast<int>(cms::Session::AUTO_ACKNOWLEDGE);
}
m_session.reset(m_connection->createSession( static_cast<cms::Session::AcknowledgeMode>(m_ackMode) ));
m_connection->start();
if (m_transportListener.get())
{
m_transportListener->transportResumed();
}
}
catch (const cms::CMSException& e)
{
handleCmsException(e);
}
}
void CMSConnection::mwDisconnect()
{
try
{
cleanup();
}
catch (const cms::CMSException& e)
{
GMSEC_ERROR << "Error disconnecting";
}
}
gmsec_amqcms::SubscriptionInfo* CMSConnection::makeSubscriptionInfo(const std::string& subject, const Config& config)
{
GMSEC_VERBOSE << "makeSubscriptionInfo(" << subject.c_str() << ')';
StdUniquePtr<cms::Destination> dest;
StdUniquePtr<cms::MessageConsumer> consumer;
if (config.getBooleanValue(AMQ_DURABLE_SUBSCRIBE, false))
{
dest.reset(m_session->createTopic(subject));
const char* clientId = config.getValue(AMQ_DURABLE_CLIENT_ID);
const char* msgSelector = config.getValue(AMQ_DURABLE_MSG_SELECTOR);
if (!clientId)
{
GMSEC_ERROR << "No client ID specified for durable subscription";
return NULL;
}
// Message selector is not required, if not present, populate with empty string
if (!msgSelector)
{
msgSelector = "";
}
consumer.reset(m_session->createDurableConsumer(dynamic_cast<cms::Topic*>(dest.get()), clientId, msgSelector));
}
#ifdef GMSEC_ARTEMIS
else if (subject.find(ARTEMIS_MQ_TOPIC_DELIMITER) != std::string::npos)
{
// We have a subscription topic w/ a Fully Qualified Queue Name (FQQN)
dest.reset(m_session->createQueue(subject));
consumer.reset(m_session->createConsumer(dest.get()));
}
#endif
else
{
dest.reset(m_session->createTopic(subject));
consumer.reset(m_session->createConsumer(dest.get()));
}
TopicListener* listener = new TopicListener(this, m_queue);
consumer->setMessageListener(listener);
gmsec_amqcms::SubscriptionInfo* info = new gmsec_amqcms::SubscriptionInfo(consumer.release());
return info;
}
void CMSConnection::mwSubscribe(const char *subject0, const Config &config)
{
std::string subject(subject0);
std::map<std::string, gmsec_amqcms::SubscriptionInfo*>::const_iterator i = m_subscriptions.find(subject);
if (i != m_subscriptions.end())
{
GMSEC_VERBOSE << "Duplicate subscription";
throw GmsecException(MIDDLEWARE_ERROR, INVALID_SUBJECT_NAME, "Duplicate subscription");
}
try
{
#ifdef GMSEC_ARTEMIS
size_t p = subject.find(ARTEMIS_MQ_TOPIC_DELIMITER);
if (p == std::string::npos)
{
p = subject.length() - 1;
}
else
{
--p;
}
#else
size_t p = subject.length() - 1;
#endif
if (subject[p] == '>')
{
subject = subject.replace(p, 1, "*.>");
}
else if (subject[p] == '+')
{
subject = subject.replace(p, 1, ">");
}
gmsec_amqcms::SubscriptionInfo* info = makeSubscriptionInfo(subject, config);
if (info != NULL)
{
m_subscriptions[subject0] = info;
}
else
{
GMSEC_VERBOSE << "Invalid subscription configuration arguments";
throw GmsecException(MIDDLEWARE_ERROR, INVALID_CONFIG_VALUE, "Invalid subscription configuration arguments");
}
}
catch (const cms::CMSException& e)
{
std::string message(e.what());
// check if this is an authorization exception
// check if this is an unauthorized exception
size_t p = message.find(" is not authorized to read from:");
if (p != std::string::npos)
{
size_t from = message.find("Message: ");
// skip the "Message: "
if (from == std::string::npos)
{
from = 0;
}
else
{
from += 9;
}
size_t to = message.find("Exception Class");
if (to == std::string::npos)
{
to = message.length();
}
message = message.substr(from, to - from);
GMSEC_VERBOSE << message.c_str();
throw GmsecException(POLICY_ERROR, SUBSCRIBE_NOT_AUTHORIZED, message.c_str());
}
else
{
GMSEC_VERBOSE << message.c_str();
throw GmsecException(MIDDLEWARE_ERROR, INVALID_CONNECTION, message.c_str());
}
}
}
void CMSConnection::mwUnsubscribe(const char* subject)
{
std::map<std::string, SubscriptionInfo*>::iterator it = m_subscriptions.find(subject);
if (it == m_subscriptions.end())
{
GMSEC_VERBOSE << "Not subscribed to subject";
throw GmsecException(CONNECTION_ERROR, INVALID_SUBJECT_NAME, "Not subscribed to subject");
}
try
{
delete it->second;
m_subscriptions.erase(it);
GMSEC_DEBUG << "Unsubscribed from " << subject;
}