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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.
*
*/
#include <grpc/support/port_platform.h>
#include "src/core/ext/filters/client_channel/client_channel.h"
#include "src/core/ext/filters/client_channel/client_channel_channelz.h"
#include "src/core/lib/gpr/useful.h"
#include "src/core/lib/surface/channel.h"
#include "src/core/lib/transport/connectivity_state.h"
namespace grpc_core {
namespace channelz {
namespace {
void* client_channel_channelz_copy(void* p) { return p; }
void client_channel_channelz_destroy(void* p) {}
int client_channel_channelz_cmp(void* a, void* b) { return GPR_ICMP(a, b); }
} // namespace
static const grpc_arg_pointer_vtable client_channel_channelz_vtable = {
client_channel_channelz_copy, client_channel_channelz_destroy,
client_channel_channelz_cmp};
ClientChannelNode::ClientChannelNode(grpc_channel* channel,
size_t channel_tracer_max_nodes)
: ChannelNode(channel, channel_tracer_max_nodes) {
client_channel_ =
grpc_channel_stack_last_element(grpc_channel_get_channel_stack(channel));
GPR_ASSERT(client_channel_->filter == &grpc_client_channel_filter);
}
void ClientChannelNode::PopulateConnectivityState(grpc_json* json) {
grpc_connectivity_state state;
if (ChannelIsDestroyed()) {
state = GRPC_CHANNEL_SHUTDOWN;
} else {
state =
grpc_client_channel_check_connectivity_state(client_channel_, false);
}
json = grpc_json_create_child(nullptr, json, "state", nullptr,
GRPC_JSON_OBJECT, false);
grpc_json_create_child(nullptr, json, "state",
grpc_connectivity_state_name(state), GRPC_JSON_STRING,
false);
}
grpc_arg ClientChannelNode::CreateChannelArg() {
return grpc_channel_arg_pointer_create(
const_cast<char*>(GRPC_ARG_CHANNELZ_CHANNEL_NODE_CREATION_FUNC),
reinterpret_cast<void*>(MakeClientChannelNode),
&client_channel_channelz_vtable);
}
RefCountedPtr<ChannelNode> ClientChannelNode::MakeClientChannelNode(
grpc_channel* channel, size_t channel_tracer_max_nodes) {
return MakePolymorphicRefCounted<ChannelNode, ClientChannelNode>(
channel, channel_tracer_max_nodes);
}
} // namespace channelz
} // namespace grpc_core
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