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// **********************************************************************
//
// Copyright (c) 2003-2018 ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************
#include <Ice/Ice.h>
#include <IceGrid/ServerAdapterI.h>
#include <IceGrid/ServerI.h>
#include <IceGrid/TraceLevels.h>
#include <IceGrid/NodeI.h>
using namespace std;
using namespace IceGrid;
ServerAdapterI::ServerAdapterI(const NodeIPtr& node,
ServerI* server,
const string& serverName,
const AdapterPrx& proxy,
const string& id,
bool enabled) :
_node(node),
_this(proxy),
_serverId(serverName),
_id(id),
_server(server),
_enabled(enabled)
{
}
ServerAdapterI::~ServerAdapterI()
{
assert(_activateCB.empty());
}
void
ServerAdapterI::activate_async(const AMD_Adapter_activatePtr& cb, const Ice::Current&)
{
{
Lock sync(*this);
if(_enabled && _proxy)
{
//
// Return the adapter direct proxy.
//
cb->ice_response(_proxy);
return;
}
else if(_activateCB.empty())
{
//
// Nothing else waits for this adapter so we must make sure that this
// adapter if still activatable.
//
if(!_enabled || !_server->isAdapterActivatable(_id))
{
cb->ice_response(0);
return;
}
}
if(_node->getTraceLevels()->adapter > 2)
{
Ice::Trace out(_node->getTraceLevels()->logger, _node->getTraceLevels()->adapterCat);
out << "waiting for activation of server `" + _serverId + "' adapter `" << _id << "'";
}
_activateCB.push_back(cb);
if(_activateCB.size() > 1)
{
return;
}
_activateAfterDeactivating = _server->getState(Ice::emptyCurrent) >= Deactivating &&
_server->getState(Ice::emptyCurrent) < Destroying;
}
//
// Try to start the server. Note that we start the server outside
// the synchronization block since start() can block and callback
// on this adapter (when the server is deactivating for example).
//
try
{
_server->start(ServerI::OnDemand);
return;
}
catch(const ServerStartException& ex)
{
activationFailed(ex.reason);
}
catch(const Ice::ObjectNotExistException&)
{
//
// The server associated to this adapter doesn't exist anymore. Somehow the database is
// inconsistent if this happens. The best thing to do is to destroy the adapter.
//
destroy();
}
catch(const Ice::Exception& ex)
{
ostringstream os;
os << "unexpected exception: " << ex;
activationFailed(os.str());
}
}
Ice::ObjectPrx
ServerAdapterI::getDirectProxy(const Ice::Current&) const
{
Lock sync(*this);
//
// Return the adapter direct proxy if it's set. Otherwise, throw. The caller can eventually
// activate the adapter if it's activatable.
//
if(_proxy && _enabled)
{
return _proxy;
}
else
{
throw AdapterNotActiveException(_enabled && _server->isAdapterActivatable(_id));
}
}
void
ServerAdapterI::setDirectProxy(const Ice::ObjectPrx& prx, const Ice::Current&)
{
Lock sync(*this);
//
// We don't allow to override an existing proxy by another non
// null proxy if the server is not inactive.
//
if(!_node->allowEndpointsOverride())
{
if(prx && _proxy)
{
if(_server->getState(Ice::emptyCurrent) == Active)
{
throw AdapterActiveException();
}
}
}
bool updated = _proxy != prx;
_proxy = prx;
//
// If the server is being deactivated and the activation callback
// was added during the deactivation, we don't send the response
// now. The server is going to be activated again and the adapter
// activated.
//
if(_server->getState(Ice::emptyCurrent) < Deactivating ||
_server->getState(Ice::emptyCurrent) >= Destroying || !_activateAfterDeactivating)
{
for(vector<AMD_Adapter_activatePtr>::const_iterator p = _activateCB.begin(); p != _activateCB.end(); ++p)
{
(*p)->ice_response(_proxy);
}
_activateCB.clear();
}
if(updated)
{
AdapterDynamicInfo info;
info.id = _id;
info.proxy = _proxy;
_node->observerUpdateAdapter(info);
}
if(_proxy)
{
_server->adapterActivated(_id);
}
else
{
_server->adapterDeactivated(_id);
}
if(_node->getTraceLevels()->adapter > 1)
{
Ice::Trace out(_node->getTraceLevels()->logger, _node->getTraceLevels()->adapterCat);
out << "server `" + _serverId + "' adapter `" << _id << "' " << (_proxy ? "activated" : "deactivated");
if(_proxy)
{
out << ": " << _node->getCommunicator()->proxyToString(_proxy);
}
}
}
void
ServerAdapterI::destroy()
{
activationFailed("adapter destroyed");
try
{
_node->getAdapter()->remove(_this->ice_getIdentity());
}
catch(const Ice::LocalException&)
{
// Ignore.
}
}
void
ServerAdapterI::updateEnabled()
{
Lock sync(*this);
_enabled = _server->isEnabled(Ice::emptyCurrent);
}
void
ServerAdapterI::clear()
{
Lock sync(*this);
_proxy = 0;
_activateAfterDeactivating = false;
}
void
ServerAdapterI::activationFailed(const std::string& reason)
{
//
// The server couldn't be activated, trace and return the current adapter proxy.
//
if(_node->getTraceLevels()->adapter > 1)
{
Ice::Trace out(_node->getTraceLevels()->logger, _node->getTraceLevels()->adapterCat);
out << "server `" + _serverId + "' adapter `" << _id << "' activation failed: " << reason;
}
Lock sync(*this);
for(vector<AMD_Adapter_activatePtr>::const_iterator p = _activateCB.begin(); p != _activateCB.end(); ++p)
{
(*p)->ice_response(0);
}
_activateCB.clear();
}
void
ServerAdapterI::activationCompleted()
{
Lock sync(*this);
if(!_proxy)
{
//
// The server activation completed, but the adapter hasn't been activated.
//
if(_node->getTraceLevels()->adapter > 1)
{
Ice::Trace out(_node->getTraceLevels()->logger, _node->getTraceLevels()->adapterCat);
out << "server `" + _serverId + "' adapter `" << _id << "' activation failed: server activation completed";
}
}
for(vector<AMD_Adapter_activatePtr>::const_iterator p = _activateCB.begin(); p != _activateCB.end(); ++p)
{
(*p)->ice_response(_proxy);
}
_activateCB.clear();
}
AdapterPrx
ServerAdapterI::getProxy() const
{
return _this;
}
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