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/*
*
* Copyright 2018 gRPC 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.
*
*/
#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_CLIENT_CHANNEL_CHANNELZ_H
#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_CLIENT_CHANNEL_CHANNELZ_H
#include <grpc/support/port_platform.h>
#include "src/core/lib/channel/channel_args.h"
#include "src/core/lib/channel/channel_stack.h"
#include "src/core/lib/channel/channel_trace.h"
#include "src/core/lib/channel/channelz.h"
typedef struct grpc_subchannel grpc_subchannel;
namespace grpc_core {
namespace channelz {
// Subtype of ChannelNode that overrides and provides client_channel specific
// functionality like querying for connectivity_state and subchannel data.
class ClientChannelNode : public ChannelNode {
public:
static RefCountedPtr<ChannelNode> MakeClientChannelNode(
grpc_channel* channel, size_t channel_tracer_max_nodes,
bool is_top_level_channel);
ClientChannelNode(grpc_channel* channel, size_t channel_tracer_max_nodes,
bool is_top_level_channel);
virtual ~ClientChannelNode() {}
// Overriding template methods from ChannelNode to render information that
// only ClientChannelNode knows about.
void PopulateConnectivityState(grpc_json* json) override;
void PopulateChildRefs(grpc_json* json) override;
// Helper to create a channel arg to ensure this type of ChannelNode is
// created.
static grpc_arg CreateChannelArg();
private:
grpc_channel_element* client_channel_;
};
// Handles channelz bookkeeping for sockets
class SubchannelNode : public BaseNode {
public:
SubchannelNode(grpc_subchannel* subchannel, size_t channel_tracer_max_nodes);
~SubchannelNode() override;
void MarkSubchannelDestroyed() {
GPR_ASSERT(subchannel_ != nullptr);
subchannel_ = nullptr;
}
grpc_json* RenderJson() override;
// proxy methods to composed classes.
void AddTraceEvent(ChannelTrace::Severity severity, grpc_slice data) {
trace_.AddTraceEvent(severity, data);
}
void AddTraceEventWithReference(ChannelTrace::Severity severity,
grpc_slice data,
RefCountedPtr<BaseNode> referenced_channel) {
trace_.AddTraceEventWithReference(severity, data,
std::move(referenced_channel));
}
void RecordCallStarted() { call_counter_.RecordCallStarted(); }
void RecordCallFailed() { call_counter_.RecordCallFailed(); }
void RecordCallSucceeded() { call_counter_.RecordCallSucceeded(); }
private:
grpc_subchannel* subchannel_;
UniquePtr<char> target_;
CallCountingHelper call_counter_;
ChannelTrace trace_;
void PopulateConnectivityState(grpc_json* json);
};
} // namespace channelz
} // namespace grpc_core
#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_CLIENT_CHANNEL_CHANNELZ_H */
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