Merge pull request #4038 from dgquintas/grpclb_api

Proto API for LB request/responses

1 files changed, 133 insertions, 0 deletions

diff --git a/test/cpp/grpclb/grpclb_api_test.cc b/test/cpp/grpclb/grpclb_api_test.cc
new file mode 100644
index 0000000000..bd4885fb4c
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+++ b/test/cpp/grpclb/grpclb_api_test.cc
@@ -0,0 +1,133 @@
+/*
+ *
+ * Copyright 2016, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <gtest/gtest.h>
+#include <string>
+
+#include "src/core/client_config/lb_policies/load_balancer_api.h"
+#include "src/proto/grpc/lb/v0/load_balancer.pb.h"  // C++ version
+
+namespace grpc {
+namespace {
+
+using grpc::lb::v0::LoadBalanceRequest;
+using grpc::lb::v0::LoadBalanceResponse;
+
+class GrpclbTest : public ::testing::Test {};
+
+TEST_F(GrpclbTest, CreateRequest) {
+  const std::string service_name = "AServiceName";
+  LoadBalanceRequest request;
+  grpc_grpclb_request* c_req = grpc_grpclb_request_create(service_name.c_str());
+  gpr_slice slice = grpc_grpclb_request_encode(c_req);
+  const int num_bytes_written = GPR_SLICE_LENGTH(slice);
+  EXPECT_GT(num_bytes_written, 0);
+  request.ParseFromArray(GPR_SLICE_START_PTR(slice), num_bytes_written);
+  EXPECT_EQ(request.initial_request().name(), service_name);
+  gpr_slice_unref(slice);
+  grpc_grpclb_request_destroy(c_req);
+}
+
+TEST_F(GrpclbTest, ParseResponse) {
+  LoadBalanceResponse response;
+  const std::string client_config_str = "I'm a client config";
+  auto* initial_response = response.mutable_initial_response();
+  initial_response->set_client_config(client_config_str);
+  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 std::string encoded_response = response.SerializeAsString();
+  gpr_slice encoded_slice =
+      gpr_slice_from_copied_string(encoded_response.c_str());
+  grpc_grpclb_response* c_response = grpc_grpclb_response_parse(encoded_slice);
+  EXPECT_TRUE(c_response->has_initial_response);
+  EXPECT_TRUE(c_response->initial_response.has_client_config);
+  EXPECT_FALSE(c_response->initial_response.has_load_balancer_delegate);
+  EXPECT_TRUE(strcmp(c_response->initial_response.client_config,
+                     client_config_str.c_str()) == 0);
+  EXPECT_EQ(c_response->initial_response.client_stats_report_interval.seconds,
+            123);
+  EXPECT_EQ(c_response->initial_response.client_stats_report_interval.nanos,
+            456);
+  gpr_slice_unref(encoded_slice);
+  grpc_grpclb_response_destroy(c_response);
+}
+
+TEST_F(GrpclbTest, ParseResponseServerList) {
+  LoadBalanceResponse response;
+  auto* serverlist = response.mutable_server_list();
+  auto* server = serverlist->add_servers();
+  server->set_ip_address("127.0.0.1");
+  server->set_port(12345);
+  server->set_drop_request(true);
+  server = response.mutable_server_list()->add_servers();
+  server->set_ip_address("10.0.0.1");
+  server->set_port(54321);
+  server->set_drop_request(false);
+  auto* expiration_interval = serverlist->mutable_expiration_interval();
+  expiration_interval->set_seconds(888);
+  expiration_interval->set_nanos(999);
+
+  const std::string encoded_response = response.SerializeAsString();
+  gpr_slice encoded_slice =
+      gpr_slice_from_copied_string(encoded_response.c_str());
+  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_TRUE(strcmp(c_serverlist->servers[0]->ip_address, "127.0.0.1") == 0);
+  EXPECT_EQ(c_serverlist->servers[0]->port, 12345);
+  EXPECT_TRUE(c_serverlist->servers[0]->drop_request);
+  EXPECT_TRUE(c_serverlist->servers[1]->has_ip_address);
+  EXPECT_TRUE(strcmp(c_serverlist->servers[1]->ip_address, "10.0.0.1") == 0);
+  EXPECT_EQ(c_serverlist->servers[1]->port, 54321);
+  EXPECT_FALSE(c_serverlist->servers[1]->drop_request);
+
+  EXPECT_TRUE(c_serverlist->expiration_interval.has_seconds);
+  EXPECT_EQ(c_serverlist->expiration_interval.seconds, 888);
+  EXPECT_TRUE(c_serverlist->expiration_interval.has_nanos);
+  EXPECT_EQ(c_serverlist->expiration_interval.nanos, 999);
+
+  gpr_slice_unref(encoded_slice);
+  grpc_grpclb_destroy_serverlist(c_serverlist);
+}
+
+}  // namespace
+}  // namespace grpc
+
+int main(int argc, char** argv) {
+  ::testing::InitGoogleTest(&argc, argv);
+  return RUN_ALL_TESTS();
+}