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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 <string>
#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"
namespace grpc_core {
namespace channelz {
class SubchannelNode : public BaseNode {
public:
SubchannelNode(std::string target_address, size_t channel_tracer_max_nodes);
~SubchannelNode() override;
// Sets the subchannel's connectivity state without health checking.
void UpdateConnectivityState(grpc_connectivity_state state);
// Used when the subchannel's child socket changes. This should be set when
// the subchannel's transport is created and set to nullptr when the
// subchannel unrefs the transport.
void SetChildSocket(RefCountedPtr<SocketNode> socket);
Json RenderJson() override;
// proxy methods to composed classes.
void AddTraceEvent(ChannelTrace::Severity severity, const grpc_slice& data) {
trace_.AddTraceEvent(severity, data);
}
void AddTraceEventWithReference(ChannelTrace::Severity severity,
const 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:
Atomic<grpc_connectivity_state> connectivity_state_{GRPC_CHANNEL_IDLE};
Mutex socket_mu_;
RefCountedPtr<SocketNode> child_socket_ ABSL_GUARDED_BY(socket_mu_);
std::string target_;
CallCountingHelper call_counter_;
ChannelTrace trace_;
};
} // namespace channelz
} // namespace grpc_core
#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_CLIENT_CHANNEL_CHANNELZ_H */
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