Boolean ProviderAgent::_readAndProcessRequest()
{
PEG_METHOD_ENTER(TRC_PROVIDERAGENT,
"ProviderAgent::_readAndProcessRequest");
CIMRequestMessage* request;
//
// Read the request from CIM Server
//
CIMMessage* cimMessage;
AnonymousPipe::Status readStatus = _pipeFromServer->readMessage(cimMessage);
request = dynamic_cast<CIMRequestMessage*>(cimMessage);
// Read operation was interrupted
if (readStatus == AnonymousPipe::STATUS_INTERRUPT)
{
PEG_TRACE_CSTRING(TRC_PROVIDERAGENT, Tracer::LEVEL1,
"Read operation was interrupted.");
PEG_METHOD_EXIT();
return false;
}
if (readStatus == AnonymousPipe::STATUS_CLOSED)
{
// The CIM Server connection is closed
PEG_TRACE_CSTRING(TRC_PROVIDERAGENT, Tracer::LEVEL2,
"CIMServer connection closed. Exiting.");
_terminating = true;
PEG_METHOD_EXIT();
return false;
}
if (readStatus == AnonymousPipe::STATUS_ERROR)
{
PEG_TRACE_CSTRING(TRC_PROVIDERAGENT, Tracer::LEVEL1,
"Error reading from pipe. Exiting.");
Logger::put_l(Logger::ERROR_LOG, System::CIMSERVER, Logger::WARNING,
MessageLoaderParms(
"ProviderManager.ProviderAgent.ProviderAgent."
"CIMSERVER_COMMUNICATION_FAILED",
"cimprovagt \"$0\" communication with CIM Server failed. "
"Exiting.",
_agentId));
_terminating = true;
PEG_METHOD_EXIT();
return false;
}
// The message was not a request message.
if (request == 0)
{
// The message was not empty.
if (0 != cimMessage )
{
// The message was not a "wake up" message.
if (cimMessage->getType() == PROVAGT_GET_SCMOCLASS_RESPONSE_MESSAGE)
{
PEG_TRACE_CSTRING(TRC_PROVIDERAGENT, Tracer::LEVEL3,
"Processing a SCMOClassResponseMessage.");
AutoPtr<ProvAgtGetScmoClassResponseMessage> response(
dynamic_cast<ProvAgtGetScmoClassResponseMessage*>
(cimMessage));
PEGASUS_DEBUG_ASSERT(response.get());
_processGetSCMOClassResponse(response.get());
// The provider agent is still busy.
PEG_METHOD_EXIT();
return true;
}
}
// A "wake up" message means we should unload idle providers
PEG_TRACE_CSTRING(TRC_PROVIDERAGENT, Tracer::LEVEL4,
"Got a wake up message.");
if (!_providerManagerRouter.hasActiveProviders())
{
// No active providers, so do not start an idle unload thread
return false;
}
try
{
_unloadIdleProviders();
}
catch (...)
{
// Ignore exceptions from idle provider unloading
PEG_TRACE_CSTRING(TRC_PROVIDERAGENT, Tracer::LEVEL2,
"Ignoring exception from _unloadIdleProviders()");
}
PEG_METHOD_EXIT();
return false;
}
PEG_TRACE((TRC_PROVIDERAGENT, Tracer::LEVEL3,
"Received request from server with messageId %s",
(const char*)request->messageId.getCString()));
const AcceptLanguageListContainer acceptLang =
request->operationContext.get(AcceptLanguageListContainer::NAME);
Thread::setLanguages(acceptLang.getLanguages());
// Get the ProviderIdContainer to complete the provider module instance
// optimization. If the provider module instance is blank (optimized
// out), fill it in from our cache. If it is not blank, update our
// cache. (See the _providerModuleCache member description.)
if (request->operationContext.contains(ProviderIdContainer::NAME))
{
ProviderIdContainer pidc = request->operationContext.get(
ProviderIdContainer::NAME);
if (pidc.getModule().isUninitialized())
{
// Provider module is optimized out. Fill it in from the cache.
request->operationContext.set(ProviderIdContainer(
_providerModuleCache, pidc.getProvider(),
pidc.isRemoteNameSpace(), pidc.getRemoteInfo()));
}
else
{
// Update the cache with the new provider module instance.
_providerModuleCache = pidc.getModule();
}
}
//
// It never should be possible to receive a request other than "initialise"
// before the provider agent is in state isInitialised
//
// Bail out.
//
if (!_isInitialised &&
(request->getType() != CIM_INITIALIZE_PROVIDER_AGENT_REQUEST_MESSAGE))
{
Logger::put_l(Logger::ERROR_LOG, System::CIMSERVER, Logger::WARNING,
MessageLoaderParms(
"ProviderManager.ProviderAgent.ProviderAgent."
"PROVIDERAGENT_NOT_INITIALIZED",
"cimprovagt \"$0\" was not yet initialized "
"prior to receiving a request message. Exiting.",
_agentId));
_terminating = true;
PEG_METHOD_EXIT();
return false;
}
//
// Check for messages to be handled by the Agent itself.
//
if (request->getType() == CIM_INITIALIZE_PROVIDER_AGENT_REQUEST_MESSAGE)
{
// Process the request in this thread
AutoPtr<CIMInitializeProviderAgentRequestMessage> ipaRequest(
dynamic_cast<CIMInitializeProviderAgentRequestMessage*>(request));
PEGASUS_ASSERT(ipaRequest.get() != 0);
ConfigManager::setPegasusHome(ipaRequest->pegasusHome);
ConfigManager* configManager = ConfigManager::getInstance();
// Initialize the configuration properties
for (Uint32 i = 0; i < ipaRequest->configProperties.size(); i++)
{
configManager->initCurrentValue(
ipaRequest->configProperties[i].first,
ipaRequest->configProperties[i].second);
}
// Set the default resource bundle directory for the MessageLoader
MessageLoader::setPegasusMsgHome(ConfigManager::getHomedPath(
configManager->getCurrentValue("messageDir")));
// Set the log file directory
#if !defined(PEGASUS_USE_SYSLOGS)
Logger::setHomeDirectory(ConfigManager::getHomedPath(
configManager->getCurrentValue("logdir")));
#endif
System::bindVerbose = ipaRequest->bindVerbose;
//
// Set _subscriptionInitComplete from value in
// InitializeProviderAgent request
//
_providerManagerRouter.setSubscriptionInitComplete
(ipaRequest->subscriptionInitComplete);
PEG_TRACE_CSTRING(TRC_PROVIDERAGENT, Tracer::LEVEL2,
"Processed the agent initialization message.");
// Notify the cimserver that the provider agent is initialized.
Uint32 messageLength = 0;
_pipeToServer->writeBuffer((const char*)&messageLength, sizeof(Uint32));
#if defined(PEGASUS_OS_ZOS) && defined(PEGASUS_ZOS_SECURITY)
// prepare and setup the thread-level security environment on z/OS
// if security initialization fails
startupCheckBPXServer(false);
startupCheckMSC();
if (!isZOSSecuritySetup())
{
Logger::put_l(Logger::ERROR_LOG, ZOS_SECURITY_NAME, Logger::FATAL,
MessageLoaderParms(
"ProviderManager.ProviderAgent.ProviderAgent."
"UNINITIALIZED_SECURITY_SETUP.PEGASUS_OS_ZOS",
"Security environment could not be initialised. "
"Assume security fraud. Stopping Provider Agent."));
exit(1);
}
#endif
// provider agent is initialised and ready to go
_isInitialised = true;
}
else if (request->getType() == CIM_NOTIFY_CONFIG_CHANGE_REQUEST_MESSAGE)
{
// Process the request in this thread
AutoPtr<CIMNotifyConfigChangeRequestMessage> notifyRequest(
dynamic_cast<CIMNotifyConfigChangeRequestMessage*>(request));
PEGASUS_ASSERT(notifyRequest.get() != 0);
//
// Update the ConfigManager with the new property value
//
ConfigManager* configManager = ConfigManager::getInstance();
CIMException responseException;
try
{
if (notifyRequest->currentValueModified)
{
String userName = ((IdentityContainer)
request->operationContext.get(
IdentityContainer::NAME)).getUserName();
configManager->updateCurrentValue(
notifyRequest->propertyName,
notifyRequest->newPropertyValue,
userName,
0,
false);
}
else
{
configManager->updatePlannedValue(
notifyRequest->propertyName,
notifyRequest->newPropertyValue,
true);
}
}
catch (Exception& e)
{
responseException = PEGASUS_CIM_EXCEPTION(
CIM_ERR_FAILED, e.getMessage());
}
AutoPtr<CIMResponseMessage> response(notifyRequest->buildResponse());
response->cimException = responseException;
// Return response to CIM Server
_writeResponse(response.get());
}
else if ((request->getType() == CIM_DISABLE_MODULE_REQUEST_MESSAGE) ||
(request->getType() == CIM_STOP_ALL_PROVIDERS_REQUEST_MESSAGE))
{
// Process the request in this thread
AutoPtr<Message> response(_processRequest(request));
_writeResponse(response.get());
CIMResponseMessage * respMsg =
dynamic_cast<CIMResponseMessage*>(response.get());
// If StopAllProviders, terminate the agent process.
// If DisableModule not successful, leave agent process running.
if ((request->getType() == CIM_STOP_ALL_PROVIDERS_REQUEST_MESSAGE) ||
((request->getType() == CIM_DISABLE_MODULE_REQUEST_MESSAGE) &&
(!dynamic_cast<CIMDisableModuleRequestMessage*>(request)->
disableProviderOnly) &&
(respMsg->cimException.getCode() == CIM_ERR_SUCCESS)))
{
// Operation is successful. End the agent process.
_providersStopped = true;
_terminating = true;
}
delete request;
}
else if (request->getType () ==
CIM_SUBSCRIPTION_INIT_COMPLETE_REQUEST_MESSAGE ||
request->getType () ==
CIM_INDICATION_SERVICE_DISABLED_REQUEST_MESSAGE)
{
//
// Process the request in this thread
//
AutoPtr <Message> response (_processRequest (request));
_writeResponse (response.get ());
//
// Note: the response does not contain interesting data
//
delete request;
}
else
{
// Start a new thread to process the request
ProviderAgentRequest* agentRequest =
new ProviderAgentRequest(this, request);
ThreadStatus rtn = PEGASUS_THREAD_OK;
while ((rtn = _threadPool.allocate_and_awaken(agentRequest,
ProviderAgent::_processRequestAndWriteResponse)) !=
PEGASUS_THREAD_OK)
{
if (rtn == PEGASUS_THREAD_INSUFFICIENT_RESOURCES)
{
Threads::yield();
}
else
{
PEG_TRACE_CSTRING(TRC_PROVIDERAGENT, Tracer::LEVEL1,
"Could not allocate thread to process agent request.");
AutoPtr<CIMResponseMessage> response(request->buildResponse());
response->cimException = PEGASUS_CIM_EXCEPTION_L(
CIM_ERR_FAILED,
MessageLoaderParms(
"ProviderManager.ProviderAgent.ProviderAgent."
"THREAD_ALLOCATION_FAILED",
"Failed to allocate a thread in cimprovagt \"$0\".",
_agentId));
// Return response to CIM Server
_writeResponse(response.get());
delete agentRequest;
delete request;
break;
}
}
}
PEG_METHOD_EXIT();
return true;
}
ProviderClassList IndicationOperationAggregate::findProvider(
const String& messageId) const
{
//
// Look in the list of requests for the request with the message ID
// corresponding to the message ID in the response
//
ProviderClassList provider;
Uint32 numberRequests = getNumberRequests();
for (Uint32 i = 0; i < numberRequests; i++)
{
if (getRequest(i)->messageId == messageId )
{
//
// Get the provider and provider module from the matching request
//
switch (getRequest(i)->getType())
{
case CIM_CREATE_SUBSCRIPTION_REQUEST_MESSAGE:
{
CIMCreateSubscriptionRequestMessage* request =
(CIMCreateSubscriptionRequestMessage *) getRequest(i);
ProviderIdContainer pidc = request->operationContext.get
(ProviderIdContainer::NAME);
provider.provider = pidc.getProvider();
provider.providerModule = pidc.getModule();
NamespaceClassList nscl;
nscl.nameSpace = request->nameSpace;
nscl.classList = request->classNames;
provider.classList.append(nscl);
provider.controlProviderName = _controlProviderName;
#ifdef PEGASUS_ENABLE_REMOTE_CMPI
provider.isRemoteNameSpace = pidc.isRemoteNameSpace();
provider.remoteInfo = pidc.getRemoteInfo();
#endif
break;
}
case CIM_DELETE_SUBSCRIPTION_REQUEST_MESSAGE:
{
CIMDeleteSubscriptionRequestMessage* request =
(CIMDeleteSubscriptionRequestMessage *) getRequest(i);
ProviderIdContainer pidc = request->operationContext.get
(ProviderIdContainer::NAME);
provider.provider = pidc.getProvider();
provider.providerModule = pidc.getModule();
NamespaceClassList nscl;
nscl.nameSpace = request->nameSpace;
nscl.classList = request->classNames;
provider.classList.append(nscl);
provider.controlProviderName = _controlProviderName;
#ifdef PEGASUS_ENABLE_REMOTE_CMPI
provider.isRemoteNameSpace = pidc.isRemoteNameSpace();
provider.remoteInfo = pidc.getRemoteInfo();
#endif
break;
}
default:
{
PEGASUS_UNREACHABLE(PEGASUS_ASSERT(false);)
break;
}
}
return provider;
}
}
Message* BasicProviderManagerRouter::processMessage(Message * message)
{
PEG_METHOD_ENTER(TRC_PROVIDERMANAGER,
"BasicProviderManagerRouter::processMessage");
CIMRequestMessage* request = dynamic_cast<CIMRequestMessage *>(message);
PEGASUS_ASSERT(request != 0);
Message* response = 0;
Boolean remoteNameSpaceRequest=false;
//
// Retrieve the ProviderManager routing information
//
CIMInstance providerModule;
if ((dynamic_cast<CIMOperationRequestMessage*>(request) != 0) ||
(request->getType() == CIM_EXPORT_INDICATION_REQUEST_MESSAGE))
{
// Provider information is in OperationContext
ProviderIdContainer pidc = (ProviderIdContainer)
request->operationContext.get(ProviderIdContainer::NAME);
providerModule = pidc.getModule();
remoteNameSpaceRequest=pidc.isRemoteNameSpace();
}
else if (dynamic_cast<CIMIndicationRequestMessage*>(request) != 0)
{
// Provider information is in CIMIndicationRequestMessage
CIMIndicationRequestMessage* indReq =
dynamic_cast<CIMIndicationRequestMessage*>(request);
ProviderIdContainer pidc =
indReq->operationContext.get(ProviderIdContainer::NAME);
providerModule = pidc.getModule();
}
else if (request->getType() == CIM_ENABLE_MODULE_REQUEST_MESSAGE)
{
// Provider information is in CIMEnableModuleRequestMessage
CIMEnableModuleRequestMessage* emReq =
dynamic_cast<CIMEnableModuleRequestMessage*>(request);
providerModule = emReq->providerModule;
}
else if (request->getType() == CIM_DISABLE_MODULE_REQUEST_MESSAGE)
{
// Provider information is in CIMDisableModuleRequestMessage
CIMDisableModuleRequestMessage* dmReq =
dynamic_cast<CIMDisableModuleRequestMessage*>(request);
providerModule = dmReq->providerModule;
}
else if ((request->getType() == CIM_STOP_ALL_PROVIDERS_REQUEST_MESSAGE) ||
(request->getType() ==
CIM_SUBSCRIPTION_INIT_COMPLETE_REQUEST_MESSAGE) ||
(request->getType() ==
CIM_INDICATION_SERVICE_DISABLED_REQUEST_MESSAGE) ||
(request->getType() == CIM_NOTIFY_CONFIG_CHANGE_REQUEST_MESSAGE))
{
// This operation is not provider-specific
}
else
{
// Error: Unrecognized message type.
PEGASUS_ASSERT(0);
CIMResponseMessage* resp = request->buildResponse();
resp->cimException = PEGASUS_CIM_EXCEPTION(CIM_ERR_FAILED,
"Unknown message type.");
response = resp;
}
//
// Forward the request to the appropriate ProviderManager(s)
//
if ((request->getType() == CIM_STOP_ALL_PROVIDERS_REQUEST_MESSAGE) ||
(request->getType() ==
CIM_SUBSCRIPTION_INIT_COMPLETE_REQUEST_MESSAGE) ||
(request->getType() ==
CIM_INDICATION_SERVICE_DISABLED_REQUEST_MESSAGE))
{
if (request->getType() ==
CIM_INDICATION_SERVICE_DISABLED_REQUEST_MESSAGE)
{
_subscriptionInitComplete = false;
}
else
{
_subscriptionInitComplete = true;
}
// Send CIMStopAllProvidersRequestMessage or
// CIMIndicationServiceDisabledRequestMessage or
// CIMSubscriptionInitCompleteRequestMessage to all ProviderManagers
ReadLock tableLock(_providerManagerTableLock);
for (Uint32 i = 0, n = _providerManagerTable.size(); i < n; i++)
{
ProviderManagerContainer* pmc=_providerManagerTable[i];
Message* resp = pmc->getProviderManager()->processMessage(request);
delete resp;
}
response = request->buildResponse();
}
else if (request->getType() == CIM_NOTIFY_CONFIG_CHANGE_REQUEST_MESSAGE)
{
// Do not need to forward this request to in-process provider
// managers
response = request->buildResponse();
}
else
{
// Retrieve the provider interface type
String interfaceType;
CIMValue itValue = providerModule.getProperty(
providerModule.findProperty("InterfaceType")).getValue();
itValue.get(interfaceType);
// Get ProviderModule name.
String providerModuleName;
CIMValue nameValue = providerModule.getProperty(
providerModule.findProperty(PEGASUS_PROPERTYNAME_NAME)).getValue();
nameValue.get(providerModuleName);
// Get providerManager path
String provMgrPath;
if (request->operationContext.contains(ProviderIdContainer::NAME))
{
ProviderIdContainer pidc = (ProviderIdContainer)
request->operationContext.get(ProviderIdContainer::NAME);
provMgrPath = pidc.getProvMgrPath();
}
ProviderManager* pm = 0;
Boolean gotError = false;
try
{
// Look up the appropriate ProviderManager by InterfaceType
pm = _getProviderManager(interfaceType, providerModuleName,
provMgrPath);
}
catch (const CIMException& e)
{
// This is not an error incase of CIMEnableModuleRequestMessage or
// CIMDisableModuleRequestMessage. This means there is no provider
// to enable or disable.
if (request->getType() == CIM_ENABLE_MODULE_REQUEST_MESSAGE)
{
CIMEnableModuleResponseMessage* emResponse =
dynamic_cast<CIMEnableModuleResponseMessage*>(
request->buildResponse());
emResponse->operationalStatus.append(
CIM_MSE_OPSTATUS_VALUE_OK);
response = emResponse;
}
else if (request->getType() == CIM_DISABLE_MODULE_REQUEST_MESSAGE)
{
CIMDisableModuleResponseMessage* dmResponse =
dynamic_cast<CIMDisableModuleResponseMessage*>(
request->buildResponse());
dmResponse->operationalStatus.append(
CIM_MSE_OPSTATUS_VALUE_STOPPED);
response = dmResponse;
}
else
{
CIMResponseMessage *cimResponse = request->buildResponse();
cimResponse->cimException = e;
response = cimResponse;
}
gotError = true;
}
if (!gotError && remoteNameSpaceRequest &&
!pm->supportsRemoteNameSpaces())
{
CIMResponseMessage* resp = request->buildResponse();
resp->cimException = PEGASUS_CIM_EXCEPTION(CIM_ERR_FAILED,
"Remote Namespace operations not supported for interface type "
+ interfaceType);
response = resp;
gotError = true;
}
if (!gotError)
{
response = pm->processMessage(request);
}
}
PEG_METHOD_EXIT();
return response;
}
