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/*
*
* Copyright 2017 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 <stdlib.h>
#include <string.h>
#include <grpc/grpc.h>
#include <gtest/gtest.h>
#include <grpc/support/alloc.h>
#include <grpc/support/log.h>
#include "src/core/lib/channel/channel_trace.h"
#include "src/core/lib/channel/channelz.h"
#include "src/core/lib/channel/channelz_registry.h"
#include "src/core/lib/gpr/useful.h"
#include "src/core/lib/gprpp/memory.h"
#include "src/core/lib/iomgr/exec_ctx.h"
#include "src/core/lib/json/json.h"
#include "src/core/lib/surface/channel.h"
#include "test/core/util/test_config.h"
#include <stdlib.h>
#include <string.h>
namespace grpc_core {
namespace channelz {
namespace testing {
namespace {
class ChannelFixture {
public:
ChannelFixture() {
grpc_arg client_a[1];
client_a[0].type = GRPC_ARG_INTEGER;
client_a[0].key = const_cast<char*>(GRPC_ARG_ENABLE_CHANNELZ);
client_a[0].value.integer = true;
grpc_channel_args client_args = {GPR_ARRAY_SIZE(client_a), client_a};
channel_ =
grpc_insecure_channel_create("fake_target", &client_args, nullptr);
}
~ChannelFixture() { grpc_channel_destroy(channel_); }
grpc_channel* channel() { return channel_; }
private:
grpc_channel* channel_;
};
} // namespace
// Tests basic ChannelTrace functionality like construction, adding trace, and
// lookups by uuid.
TEST(ChannelzRegistryTest, UuidStartsAboveZeroTest) {
ChannelFixture channel;
ChannelNode* channelz_channel =
grpc_channel_get_channelz_node(channel.channel());
intptr_t uuid = ChannelzRegistry::RegisterChannelNode(channelz_channel);
EXPECT_GT(uuid, 0) << "First uuid chose must be greater than zero. Zero if "
"reserved according to "
"https://github.com/grpc/proposal/blob/master/"
"A14-channelz.md";
ChannelzRegistry::UnregisterChannelNode(uuid);
}
TEST(ChannelzRegistryTest, UuidsAreIncreasing) {
ChannelFixture channel;
ChannelNode* channelz_channel =
grpc_channel_get_channelz_node(channel.channel());
std::vector<intptr_t> uuids;
uuids.reserve(10);
for (int i = 0; i < 10; ++i) {
// reregister the same object. It's ok since we are just testing uuids
uuids.push_back(ChannelzRegistry::RegisterChannelNode(channelz_channel));
}
for (size_t i = 1; i < uuids.size(); ++i) {
EXPECT_LT(uuids[i - 1], uuids[i]) << "Uuids must always be increasing";
}
}
TEST(ChannelzRegistryTest, RegisterGetTest) {
ChannelFixture channel;
ChannelNode* channelz_channel =
grpc_channel_get_channelz_node(channel.channel());
intptr_t uuid = ChannelzRegistry::RegisterChannelNode(channelz_channel);
ChannelNode* retrieved = ChannelzRegistry::GetChannelNode(uuid);
EXPECT_EQ(channelz_channel, retrieved);
}
TEST(ChannelzRegistryTest, RegisterManyItems) {
ChannelFixture channel;
ChannelNode* channelz_channel =
grpc_channel_get_channelz_node(channel.channel());
for (int i = 0; i < 100; i++) {
intptr_t uuid = ChannelzRegistry::RegisterChannelNode(channelz_channel);
ChannelNode* retrieved = ChannelzRegistry::GetChannelNode(uuid);
EXPECT_EQ(channelz_channel, retrieved);
}
}
TEST(ChannelzRegistryTest, NullIfNotPresentTest) {
ChannelFixture channel;
ChannelNode* channelz_channel =
grpc_channel_get_channelz_node(channel.channel());
intptr_t uuid = ChannelzRegistry::RegisterChannelNode(channelz_channel);
// try to pull out a uuid that does not exist.
ChannelNode* nonexistant = ChannelzRegistry::GetChannelNode(uuid + 1);
EXPECT_EQ(nonexistant, nullptr);
ChannelNode* retrieved = ChannelzRegistry::GetChannelNode(uuid);
EXPECT_EQ(channelz_channel, retrieved);
}
} // namespace testing
} // namespace channelz
} // namespace grpc_core
int main(int argc, char** argv) {
grpc_test_init(argc, argv);
grpc_init();
::testing::InitGoogleTest(&argc, argv);
int ret = RUN_ALL_TESTS();
grpc_shutdown();
return ret;
}
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