1 /*
2 *
3 * Copyright 2017 gRPC authors.
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 *
17 */
18
19 #include <stdlib.h>
20 #include <string.h>
21
22 #include <grpc/grpc.h>
23 #include <gtest/gtest.h>
24
25 #include <grpc/support/alloc.h>
26 #include <grpc/support/log.h>
27
28 #include "src/core/lib/channel/channel_trace.h"
29 #include "src/core/lib/channel/channelz.h"
30 #include "src/core/lib/channel/channelz_registry.h"
31 #include "src/core/lib/gpr/useful.h"
32 #include "src/core/lib/gprpp/memory.h"
33 #include "src/core/lib/iomgr/exec_ctx.h"
34 #include "src/core/lib/json/json.h"
35 #include "src/core/lib/surface/channel.h"
36
37 #include "test/core/util/test_config.h"
38
39 #include <stdlib.h>
40 #include <string.h>
41
42 namespace grpc_core {
43 namespace channelz {
44 namespace testing {
45
TEST(ChannelzRegistryTest,UuidStartsAboveZeroTest)46 TEST(ChannelzRegistryTest, UuidStartsAboveZeroTest) {
47 BaseNode* channelz_channel = nullptr;
48 intptr_t uuid = ChannelzRegistry::Register(channelz_channel);
49 EXPECT_GT(uuid, 0) << "First uuid chose must be greater than zero. Zero if "
50 "reserved according to "
51 "https://github.com/grpc/proposal/blob/master/"
52 "A14-channelz.md";
53 ChannelzRegistry::Unregister(uuid);
54 }
55
TEST(ChannelzRegistryTest,UuidsAreIncreasing)56 TEST(ChannelzRegistryTest, UuidsAreIncreasing) {
57 BaseNode* channelz_channel = nullptr;
58 std::vector<intptr_t> uuids;
59 uuids.reserve(10);
60 for (int i = 0; i < 10; ++i) {
61 // reregister the same object. It's ok since we are just testing uuids
62 uuids.push_back(ChannelzRegistry::Register(channelz_channel));
63 }
64 for (size_t i = 1; i < uuids.size(); ++i) {
65 EXPECT_LT(uuids[i - 1], uuids[i]) << "Uuids must always be increasing";
66 }
67 }
68
TEST(ChannelzRegistryTest,RegisterGetTest)69 TEST(ChannelzRegistryTest, RegisterGetTest) {
70 // we hackily jam an intptr_t into this pointer to check for equality later
71 BaseNode* channelz_channel = (BaseNode*)42;
72 intptr_t uuid = ChannelzRegistry::Register(channelz_channel);
73 BaseNode* retrieved = ChannelzRegistry::Get(uuid);
74 EXPECT_EQ(channelz_channel, retrieved);
75 }
76
TEST(ChannelzRegistryTest,RegisterManyItems)77 TEST(ChannelzRegistryTest, RegisterManyItems) {
78 // we hackily jam an intptr_t into this pointer to check for equality later
79 BaseNode* channelz_channel = (BaseNode*)42;
80 for (int i = 0; i < 100; i++) {
81 intptr_t uuid = ChannelzRegistry::Register(channelz_channel);
82 BaseNode* retrieved = ChannelzRegistry::Get(uuid);
83 EXPECT_EQ(channelz_channel, retrieved);
84 }
85 }
86
TEST(ChannelzRegistryTest,NullIfNotPresentTest)87 TEST(ChannelzRegistryTest, NullIfNotPresentTest) {
88 // we hackily jam an intptr_t into this pointer to check for equality later
89 BaseNode* channelz_channel = (BaseNode*)42;
90 intptr_t uuid = ChannelzRegistry::Register(channelz_channel);
91 // try to pull out a uuid that does not exist.
92 BaseNode* nonexistant = ChannelzRegistry::Get(uuid + 1);
93 EXPECT_EQ(nonexistant, nullptr);
94 BaseNode* retrieved = ChannelzRegistry::Get(uuid);
95 EXPECT_EQ(channelz_channel, retrieved);
96 }
97
98 } // namespace testing
99 } // namespace channelz
100 } // namespace grpc_core
101
main(int argc,char ** argv)102 int main(int argc, char** argv) {
103 grpc_test_init(argc, argv);
104 grpc_init();
105 ::testing::InitGoogleTest(&argc, argv);
106 int ret = RUN_ALL_TESTS();
107 grpc_shutdown();
108 return ret;
109 }
110