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/*
*
* Copyright 2016 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/grpc.h>
#include <grpcpp/impl/codegen/config.h>
#include <gtest/gtest.h>
#include "src/core/ext/filters/client_channel/lb_policy/grpclb/load_balancer_api.h"
#include "src/core/lib/iomgr/sockaddr.h"
#include "src/core/lib/iomgr/sockaddr_utils.h"
#include "src/proto/grpc/lb/v1/load_balancer.pb.h" // C++ version
namespace grpc {
namespace {
using grpc::lb::v1::LoadBalanceRequest;
using grpc::lb::v1::LoadBalanceResponse;
class GrpclbTest : public ::testing::Test {};
grpc::string Ip4ToPackedString(const char* ip_str) {
struct in_addr ip4;
GPR_ASSERT(inet_pton(AF_INET, ip_str, &ip4) == 1);
return grpc::string(reinterpret_cast<const char*>(&ip4), sizeof(ip4));
}
grpc::string PackedStringToIp(const grpc_grpclb_ip_address& pb_ip) {
char ip_str[46] = {0};
int af = -1;
if (pb_ip.size == 4) {
af = AF_INET;
} else if (pb_ip.size == 16) {
af = AF_INET6;
} else {
abort();
}
GPR_ASSERT(inet_ntop(af, (void*)pb_ip.bytes, ip_str, 46) != nullptr);
return ip_str;
}
TEST_F(GrpclbTest, CreateRequest) {
const grpc::string service_name = "AServiceName";
LoadBalanceRequest request;
grpc_grpclb_request* c_req = grpc_grpclb_request_create(service_name.c_str());
grpc_slice slice = grpc_grpclb_request_encode(c_req);
const int num_bytes_written = GRPC_SLICE_LENGTH(slice);
EXPECT_GT(num_bytes_written, 0);
request.ParseFromArray(GRPC_SLICE_START_PTR(slice), num_bytes_written);
EXPECT_EQ(request.initial_request().name(), service_name);
grpc_slice_unref(slice);
grpc_grpclb_request_destroy(c_req);
}
TEST_F(GrpclbTest, ParseInitialResponse) {
LoadBalanceResponse response;
auto* initial_response = response.mutable_initial_response();
auto* client_stats_report_interval =
initial_response->mutable_client_stats_report_interval();
client_stats_report_interval->set_seconds(123);
client_stats_report_interval->set_nanos(456);
const grpc::string encoded_response = response.SerializeAsString();
grpc_slice encoded_slice =
grpc_slice_from_copied_string(encoded_response.c_str());
grpc_grpclb_initial_response* c_initial_response =
grpc_grpclb_initial_response_parse(encoded_slice);
EXPECT_FALSE(c_initial_response->has_load_balancer_delegate);
EXPECT_EQ(c_initial_response->client_stats_report_interval.seconds, 123);
EXPECT_EQ(c_initial_response->client_stats_report_interval.nanos, 456);
grpc_slice_unref(encoded_slice);
grpc_grpclb_initial_response_destroy(c_initial_response);
}
TEST_F(GrpclbTest, ParseResponseServerList) {
LoadBalanceResponse response;
auto* serverlist = response.mutable_server_list();
auto* server = serverlist->add_servers();
server->set_ip_address(Ip4ToPackedString("127.0.0.1"));
server->set_port(12345);
server->set_load_balance_token("rate_limting");
server->set_drop(true);
server = response.mutable_server_list()->add_servers();
server->set_ip_address(Ip4ToPackedString("10.0.0.1"));
server->set_port(54321);
server->set_load_balance_token("load_balancing");
server->set_drop(true);
const grpc::string encoded_response = response.SerializeAsString();
const grpc_slice encoded_slice = grpc_slice_from_copied_buffer(
encoded_response.data(), encoded_response.size());
grpc_grpclb_serverlist* c_serverlist =
grpc_grpclb_response_parse_serverlist(encoded_slice);
ASSERT_EQ(c_serverlist->num_servers, 2ul);
EXPECT_TRUE(c_serverlist->servers[0]->has_ip_address);
EXPECT_EQ(PackedStringToIp(c_serverlist->servers[0]->ip_address),
"127.0.0.1");
EXPECT_EQ(c_serverlist->servers[0]->port, 12345);
EXPECT_STREQ(c_serverlist->servers[0]->load_balance_token, "rate_limting");
EXPECT_TRUE(c_serverlist->servers[0]->drop);
EXPECT_TRUE(c_serverlist->servers[1]->has_ip_address);
EXPECT_EQ(PackedStringToIp(c_serverlist->servers[1]->ip_address), "10.0.0.1");
EXPECT_EQ(c_serverlist->servers[1]->port, 54321);
EXPECT_STREQ(c_serverlist->servers[1]->load_balance_token, "load_balancing");
EXPECT_TRUE(c_serverlist->servers[1]->drop);
grpc_slice_unref(encoded_slice);
grpc_grpclb_destroy_serverlist(c_serverlist);
}
} // namespace
} // namespace grpc
int main(int argc, char** argv) {
::testing::InitGoogleTest(&argc, argv);
grpc_init();
int ret = RUN_ALL_TESTS();
grpc_shutdown();
return ret;
}
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