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/*
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*
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* Copyright 2016 gRPC authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*/
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#include <grpc++/impl/codegen/config.h>
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#include <grpc/grpc.h>
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#include <gtest/gtest.h>
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#include "src/core/ext/filters/client_channel/lb_policy/grpclb/load_balancer_api.h"
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#include "src/core/lib/iomgr/sockaddr.h"
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#include "src/core/lib/iomgr/sockaddr_utils.h"
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#include "src/proto/grpc/lb/v1/load_balancer.pb.h" // C++ version
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namespace grpc {
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namespace {
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using grpc::lb::v1::LoadBalanceRequest;
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using grpc::lb::v1::LoadBalanceResponse;
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class GrpclbTest : public ::testing::Test {};
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grpc::string Ip4ToPackedString(const char* ip_str) {
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struct in_addr ip4;
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GPR_ASSERT(inet_pton(AF_INET, ip_str, &ip4) == 1);
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return grpc::string(reinterpret_cast<const char*>(&ip4), sizeof(ip4));
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}
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grpc::string PackedStringToIp(const grpc_grpclb_ip_address& pb_ip) {
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char ip_str[46] = {0};
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int af = -1;
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if (pb_ip.size == 4) {
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af = AF_INET;
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} else if (pb_ip.size == 16) {
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af = AF_INET6;
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} else {
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abort();
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}
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GPR_ASSERT(inet_ntop(af, (void*)pb_ip.bytes, ip_str, 46) != nullptr);
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return ip_str;
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}
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TEST_F(GrpclbTest, CreateRequest) {
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const grpc::string service_name = "AServiceName";
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LoadBalanceRequest request;
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grpc_grpclb_request* c_req = grpc_grpclb_request_create(service_name.c_str());
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grpc_slice slice = grpc_grpclb_request_encode(c_req);
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const int num_bytes_written = GRPC_SLICE_LENGTH(slice);
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EXPECT_GT(num_bytes_written, 0);
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request.ParseFromArray(GRPC_SLICE_START_PTR(slice), num_bytes_written);
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EXPECT_EQ(request.initial_request().name(), service_name);
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grpc_slice_unref(slice);
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grpc_grpclb_request_destroy(c_req);
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}
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TEST_F(GrpclbTest, ParseInitialResponse) {
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LoadBalanceResponse response;
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auto* initial_response = response.mutable_initial_response();
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auto* client_stats_report_interval =
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initial_response->mutable_client_stats_report_interval();
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client_stats_report_interval->set_seconds(123);
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client_stats_report_interval->set_nanos(456);
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const grpc::string encoded_response = response.SerializeAsString();
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grpc_slice encoded_slice =
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grpc_slice_from_copied_string(encoded_response.c_str());
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grpc_grpclb_initial_response* c_initial_response =
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grpc_grpclb_initial_response_parse(encoded_slice);
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EXPECT_FALSE(c_initial_response->has_load_balancer_delegate);
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EXPECT_EQ(c_initial_response->client_stats_report_interval.seconds, 123);
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EXPECT_EQ(c_initial_response->client_stats_report_interval.nanos, 456);
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grpc_slice_unref(encoded_slice);
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grpc_grpclb_initial_response_destroy(c_initial_response);
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}
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TEST_F(GrpclbTest, ParseResponseServerList) {
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LoadBalanceResponse response;
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auto* serverlist = response.mutable_server_list();
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auto* server = serverlist->add_servers();
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server->set_ip_address(Ip4ToPackedString("127.0.0.1"));
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server->set_port(12345);
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server->set_load_balance_token("rate_limting");
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server->set_drop(true);
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server = response.mutable_server_list()->add_servers();
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server->set_ip_address(Ip4ToPackedString("10.0.0.1"));
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server->set_port(54321);
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server->set_load_balance_token("load_balancing");
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server->set_drop(true);
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const grpc::string encoded_response = response.SerializeAsString();
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const grpc_slice encoded_slice = grpc_slice_from_copied_buffer(
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encoded_response.data(), encoded_response.size());
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grpc_grpclb_serverlist* c_serverlist =
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grpc_grpclb_response_parse_serverlist(encoded_slice);
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ASSERT_EQ(c_serverlist->num_servers, 2ul);
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EXPECT_TRUE(c_serverlist->servers[0]->has_ip_address);
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EXPECT_EQ(PackedStringToIp(c_serverlist->servers[0]->ip_address),
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"127.0.0.1");
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EXPECT_EQ(c_serverlist->servers[0]->port, 12345);
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EXPECT_STREQ(c_serverlist->servers[0]->load_balance_token, "rate_limting");
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EXPECT_TRUE(c_serverlist->servers[0]->drop);
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EXPECT_TRUE(c_serverlist->servers[1]->has_ip_address);
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EXPECT_EQ(PackedStringToIp(c_serverlist->servers[1]->ip_address), "10.0.0.1");
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EXPECT_EQ(c_serverlist->servers[1]->port, 54321);
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EXPECT_STREQ(c_serverlist->servers[1]->load_balance_token, "load_balancing");
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EXPECT_TRUE(c_serverlist->servers[1]->drop);
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grpc_slice_unref(encoded_slice);
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grpc_grpclb_destroy_serverlist(c_serverlist);
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}
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} // namespace
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} // namespace grpc
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int main(int argc, char** argv) {
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::testing::InitGoogleTest(&argc, argv);
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grpc_init();
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int ret = RUN_ALL_TESTS();
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grpc_shutdown();
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return ret;
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}
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