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//
// Copyright (c) ZeroC, Inc. All rights reserved.
//
#include <Ice/Ice.h>
#include <IceGrid/LocatorRegistryI.h>
#include <IceGrid/ReplicaSessionManager.h>
#include <IceGrid/Database.h>
#include <IceGrid/Util.h>
#include <IceGrid/Internal.h>
using namespace std;
using namespace IceGrid;
namespace IceGrid
{
tuple<function<void()>, function<void(exception_ptr)>>
newSetDirectProxyCB(function<void()> responseCb,
function<void(exception_ptr)> exceptionCb,
const shared_ptr<TraceLevels>& traceLevels, const string& id,
const shared_ptr<Ice::ObjectPrx>& proxy)
{
auto response = [traceLevels, id, proxy, responseCb = move(responseCb)] ()
{
if(traceLevels->locator > 1)
{
Ice::Trace out(traceLevels->logger, traceLevels->locatorCat);
out << "registered adapter `" << id << "' endpoints: `";
out << (proxy ? proxy->ice_toString() : string("")) << "'";
}
responseCb();
};
auto exception = [traceLevels, id, exceptionCb = move(exceptionCb)](auto exptr)
{
if(traceLevels->locator > 1)
{
try
{
rethrow_exception(exptr);
}
catch(const std::exception& ex)
{
Ice::Trace out(traceLevels->logger, traceLevels->locatorCat);
out << "failed to register adapter `" << id << "' endpoints:\n" << ex;
}
}
try
{
rethrow_exception(exptr);
}
catch(const AdapterActiveException&)
{
exceptionCb(make_exception_ptr(Ice::AdapterAlreadyActiveException()));
return;
}
catch(const Ice::ObjectNotExistException&)
{
exceptionCb(make_exception_ptr(Ice::AdapterNotFoundException())); // Expected if the adapter was destroyed).
return;
}
catch(const Ice::Exception&)
{
exceptionCb(make_exception_ptr(Ice::AdapterNotFoundException()));
return;
}
};
return { move(response), move(exception) };
}
class SetAdapterDirectProxyCallback final : public SynchronizationCallback
{
public:
SetAdapterDirectProxyCallback(const shared_ptr<LocatorRegistryI>& registry,
function<void()> response,
function<void(exception_ptr)> exception,
const string& adapterId,
const string& replicaGroupId,
const shared_ptr<Ice::ObjectPrx>& proxy) :
_registry(registry),
_response(move(response)),
_exception(move(exception)),
_adapterId(adapterId),
_replicaGroupId(replicaGroupId),
_proxy(proxy)
{
}
void
synchronized() override
{
try
{
_registry->setAdapterDirectProxy(_adapterId, _replicaGroupId, _proxy, _response, _exception);
}
catch(const Ice::Exception&)
{
_exception(current_exception());
}
}
void
synchronized(exception_ptr ex) override
{
_exception(ex);
}
private:
const shared_ptr<LocatorRegistryI> _registry;
const function<void()> _response;
const function<void(exception_ptr)> _exception;
const string _adapterId;
const string _replicaGroupId;
const shared_ptr<Ice::ObjectPrx> _proxy;
};
class SetServerProcessProxyCallback final : public SynchronizationCallback
{
public:
SetServerProcessProxyCallback(const shared_ptr<LocatorRegistryI>& registry,
const function<void()> response,
const function<void(exception_ptr)> exception,
const string& id,
const shared_ptr<Ice::ProcessPrx>& proxy) :
_registry(registry),
_response(move(response)),
_exception(move(exception)),
_id(id),
_proxy(proxy)
{
}
void
synchronized() override
{
try
{
_registry->setServerProcessProxyAsync(_id, _proxy, _response, _exception, Ice::Current());
}
catch(const Ice::Exception&)
{
_exception(current_exception());
}
}
void
synchronized(exception_ptr exptr) override
{
try
{
rethrow_exception(exptr);
}
catch(const ServerNotExistException&)
{
_exception(make_exception_ptr(Ice::ServerNotFoundException()));
}
catch(const Ice::Exception&)
{
auto traceLevels = _registry->getTraceLevels();
if(traceLevels->locator > 0)
{
Ice::Trace out(traceLevels->logger, traceLevels->locatorCat);
out << "couldn't register server `" << _id << "' process proxy:\n" << toString(current_exception());
}
_exception(make_exception_ptr(Ice::ServerNotFoundException()));
}
}
private:
const shared_ptr<LocatorRegistryI> _registry;
const function<void()> _response;
const function<void(exception_ptr)> _exception;
const string _id;
const shared_ptr<Ice::ProcessPrx> _proxy;
};
};
LocatorRegistryI::LocatorRegistryI(const shared_ptr<Database>& database,
bool dynamicRegistration,
bool master,
ReplicaSessionManager& session) :
_database(database),
_dynamicRegistration(dynamicRegistration),
_master(master),
_session(session)
{
}
void
LocatorRegistryI::setAdapterDirectProxyAsync(string adapterId, shared_ptr<Ice::ObjectPrx> proxy,
function<void()> response,
function<void(exception_ptr)> exception,
const Ice::Current&)
{
auto [responseCb, exceptionCb] = newSetDirectProxyCB(move(response), move(exception), _database->getTraceLevels(),
adapterId, proxy);
setAdapterDirectProxy(adapterId,
"",
proxy,
move(responseCb),
move(exceptionCb));
}
void
LocatorRegistryI::setReplicatedAdapterDirectProxyAsync(string adapterId, string replicaGroupId,
shared_ptr<Ice::ObjectPrx> proxy,
function<void()> response,
function<void(exception_ptr)> exception,
const Ice::Current&)
{
auto [responseCb, exceptionCb] = newSetDirectProxyCB(move(response), move(exception), _database->getTraceLevels(),
adapterId, proxy);
setAdapterDirectProxy(adapterId,
replicaGroupId,
proxy,
move(responseCb),
move(exceptionCb));
}
void
LocatorRegistryI::setServerProcessProxyAsync(string id, shared_ptr<Ice::ProcessPrx> proxy,
function<void()> response,
function<void(exception_ptr)> exception,
const Ice::Current&)
{
try
{
//
// Get the server from the registry and set its process proxy.
//
// NOTE: We pass false to the getServer call to indicate that
// we don't necessarily want an up-to-date adapter proxy. This
// is needed for the session activation mode for cases where
// the server is released during the server startup.
//
shared_ptr<ServerPrx> server;
while(true)
{
try
{
server = _database->getServer(id)->getProxy(false);
break;
}
catch(const SynchronizationException&)
{
auto cb = make_shared<SetServerProcessProxyCallback>(shared_from_this(), response,
exception, id, proxy);
if(_database->getServer(id)->addSyncCallback(move(cb)))
{
return;
}
}
}
server->setProcessAsync(proxy,
[id, proxy, response, traceLevels = _database->getTraceLevels()]
{
if(traceLevels->locator > 1)
{
Ice::Trace out(traceLevels->logger, traceLevels->locatorCat);
out << "registered server `" << id << "' process proxy: `";
out << (proxy ? proxy->ice_toString() : string("")) << "'";
}
response();
},
[id, exception, traceLevels = _database->getTraceLevels()] (exception_ptr exptr)
{
if(traceLevels->locator > 1)
{
try
{
rethrow_exception(exptr);
}
catch(const std::exception& ex)
{
Ice::Trace out(traceLevels->logger, traceLevels->locatorCat);
out << "failed to register server process proxy `" << id << "':\n" << ex;
}
}
try
{
rethrow_exception(exptr);
}
catch(const Ice::ObjectNotExistException&)
{
// Expected if the server was destroyed.
exception(make_exception_ptr(Ice::ServerNotFoundException()));
return;
}
catch(const Ice::LocalException&)
{
exception(make_exception_ptr(Ice::ServerNotFoundException()));
return;
}
});
}
catch(const ServerNotExistException&)
{
exception(make_exception_ptr(Ice::ServerNotFoundException()));
}
catch(const Ice::Exception&)
{
auto traceLevels = _database->getTraceLevels();
if(traceLevels->locator > 0)
{
Ice::Trace out(traceLevels->logger, traceLevels->locatorCat);
out << "couldn't register server `" << id << "' process proxy:\n" << toString(current_exception());
}
exception(make_exception_ptr(Ice::ServerNotFoundException()));
}
}
void
LocatorRegistryI::setAdapterDirectProxy(string adapterId, string replicaGroupId,
shared_ptr<Ice::ObjectPrx> proxy,
function<void()> response,
function<void(exception_ptr)> exception)
{
//
// Ignore request with empty adapter id.
//
if(adapterId.empty())
{
response();
return;
}
int nRetry = 5;
do
{
try
{
//
// Get the adapter from the registry and set its direct proxy.
//
shared_ptr<AdapterPrx> adapter;
while(true)
{
try
{
adapter = _database->getAdapterProxy(adapterId, replicaGroupId, false);
if(!adapter)
{
throw Ice::AdapterNotFoundException();
}
break;
}
catch(const SynchronizationException&)
{
if(_database->addAdapterSyncCallback(adapterId,
make_shared<SetAdapterDirectProxyCallback>(shared_from_this(),
response, exception,
adapterId,
replicaGroupId,
proxy)))
{
return;
}
}
}
adapter->setDirectProxyAsync(proxy, response, exception);
return;
}
catch(const AdapterNotExistException&)
{
if(!_dynamicRegistration)
{
throw Ice::AdapterNotFoundException();
}
}
catch(const Ice::Exception&)
{
auto traceLevels = _database->getTraceLevels();
if(traceLevels->locator > 0)
{
Ice::Trace out(traceLevels->logger, traceLevels->locatorCat);
out << "couldn't register adapter `" << adapterId << "' endpoints:\n" << toString(current_exception());
}
throw Ice::AdapterNotFoundException();
}
assert(_dynamicRegistration);
if(_master)
{
try
{
_database->setAdapterDirectProxy(adapterId, replicaGroupId, proxy);
response();
return;
}
catch(const AdapterExistsException&)
{
// Continue
}
catch(const DeploymentException& ex)
{
auto traceLevels = _database->getTraceLevels();
if(traceLevels->locator > 0)
{
Ice::Trace out(traceLevels->logger, traceLevels->locatorCat);
out << "couldn't register adapter `" << adapterId << "' endpoints with master:\n" << ex.reason;
}
throw Ice::AdapterNotFoundException();
}
}
else
{
auto session = _session.getSession();
if(!session)
{
auto traceLevels = _database->getTraceLevels();
if(traceLevels->locator > 0)
{
Ice::Trace out(traceLevels->logger, traceLevels->locatorCat);
out << "couldn't register adapter `" << adapterId << "' endpoints with master:\n";
out << "no session established with the master";
}
throw Ice::AdapterNotFoundException();
}
try
{
session->setAdapterDirectProxy(adapterId, replicaGroupId, proxy);
response();
return;
}
catch(const AdapterExistsException&)
{
// Continue
}
catch(const AdapterNotExistException&)
{
throw Ice::AdapterNotFoundException(); // Dynamic registration not allowed on the master.
}
catch(const Ice::LocalException&)
{
auto traceLevels = _database->getTraceLevels();
if(traceLevels->locator > 0)
{
Ice::Trace out(traceLevels->logger, traceLevels->locatorCat);
out << "couldn't register adapter `" << adapterId << "' endpoints with master:\n"
<< toString(current_exception());
}
throw Ice::AdapterNotFoundException();
}
}
}
while(nRetry-- > 0);
throw Ice::AdapterNotFoundException();
}
const shared_ptr<TraceLevels>&
LocatorRegistryI::getTraceLevels() const
{
return _database->getTraceLevels();
}
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