blob: 58025bdd14ea7262e8863885958d9f5bc2575632 [file] [log] [blame]
/*
*
* Copyright (c) 2021 Project CHIP Authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include <lib/core/ReferenceCounted.h>
#include <lib/dnssd/Resolver.h>
namespace chip {
namespace Dnssd {
class ResolverDelegateProxy : public ReferenceCounted<ResolverDelegateProxy>,
public OperationalResolveDelegate,
public CommissioningResolveDelegate
{
public:
void SetOperationalDelegate(OperationalResolveDelegate * delegate) { mOperationalDelegate = delegate; }
void SetCommissioningDelegate(CommissioningResolveDelegate * delegate) { mCommissioningDelegate = delegate; }
// OperationalResolveDelegate
void OnOperationalNodeResolved(const ResolvedNodeData & nodeData) override
{
if (mOperationalDelegate != nullptr)
{
mOperationalDelegate->OnOperationalNodeResolved(nodeData);
}
else
{
ChipLogError(Discovery, "Missing operational delegate. Data discarded.");
}
}
void OnOperationalNodeResolutionFailed(const PeerId & peerId, CHIP_ERROR error) override
{
if (mOperationalDelegate != nullptr)
{
mOperationalDelegate->OnOperationalNodeResolutionFailed(peerId, error);
}
else
{
ChipLogError(Discovery, "Missing operational delegate. Failure info discarded.");
}
}
// CommissioningResolveDelegate
void OnNodeDiscovered(const DiscoveredNodeData & nodeData) override
{
if (mCommissioningDelegate != nullptr)
{
mCommissioningDelegate->OnNodeDiscovered(nodeData);
}
else
{
ChipLogError(Discovery, "Missing commissioning delegate. Data discarded.");
}
}
private:
OperationalResolveDelegate * mOperationalDelegate = nullptr;
CommissioningResolveDelegate * mCommissioningDelegate = nullptr;
};
class ResolverProxy : public Resolver
{
public:
ResolverProxy() {}
~ResolverProxy() override;
// Resolver interface.
CHIP_ERROR Init(Inet::EndPointManager<Inet::UDPEndPoint> * udpEndPoint = nullptr) override
{
ReturnErrorOnFailure(chip::Dnssd::Resolver::Instance().Init(udpEndPoint));
VerifyOrReturnError(mDelegate == nullptr, CHIP_ERROR_INCORRECT_STATE);
mDelegate = chip::Platform::New<ResolverDelegateProxy>();
if (mDelegate != nullptr)
{
if (mPreInitOperationalDelegate != nullptr)
{
ChipLogProgress(Discovery, "Setting operational delegate post init");
mDelegate->SetOperationalDelegate(mPreInitOperationalDelegate);
mPreInitOperationalDelegate = nullptr;
}
if (mPreInitCommissioningDelegate != nullptr)
{
ChipLogProgress(Discovery, "Setting commissioning delegate post init");
mDelegate->SetCommissioningDelegate(mPreInitCommissioningDelegate);
mPreInitCommissioningDelegate = nullptr;
}
}
return mDelegate != nullptr ? CHIP_NO_ERROR : CHIP_ERROR_NO_MEMORY;
}
void SetOperationalDelegate(OperationalResolveDelegate * delegate) override
{
if (mDelegate != nullptr)
{
mDelegate->SetOperationalDelegate(delegate);
}
else
{
if (delegate != nullptr)
{
ChipLogProgress(Discovery, "Delaying proxy of operational discovery: missing delegate");
}
mPreInitOperationalDelegate = delegate;
}
}
void SetCommissioningDelegate(CommissioningResolveDelegate * delegate) override
{
if (mDelegate != nullptr)
{
mDelegate->SetCommissioningDelegate(delegate);
}
else
{
if (delegate != nullptr)
{
ChipLogError(Discovery, "Delaying proxy of commissioning discovery: missing delegate");
}
mPreInitCommissioningDelegate = delegate;
}
}
void Shutdown() override
{
VerifyOrReturn(mDelegate != nullptr);
mDelegate->SetOperationalDelegate(nullptr);
mDelegate->SetCommissioningDelegate(nullptr);
mDelegate->Release();
mDelegate = nullptr;
}
CHIP_ERROR ResolveNodeId(const PeerId & peerId) override;
void NodeIdResolutionNoLongerNeeded(const PeerId & peerId) override;
CHIP_ERROR DiscoverCommissionableNodes(DiscoveryFilter filter = DiscoveryFilter()) override;
CHIP_ERROR DiscoverCommissioners(DiscoveryFilter filter = DiscoveryFilter()) override;
CHIP_ERROR StopDiscovery() override;
CHIP_ERROR ReconfirmRecord(const char * hostname, Inet::IPAddress address, Inet::InterfaceId interfaceId) override;
private:
ResolverDelegateProxy * mDelegate = nullptr;
OperationalResolveDelegate * mPreInitOperationalDelegate = nullptr;
CommissioningResolveDelegate * mPreInitCommissioningDelegate = nullptr;
// While discovery (commissionable or commissioner) is ongoing,
// mDiscoveryContext may have a value to allow StopDiscovery to work.
Optional<intptr_t> mDiscoveryContext;
};
} // namespace Dnssd
} // namespace chip