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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 "src/core/lib/channel/channel_stack_builder.h"
#include <limits.h>
#include <string.h>
#include <algorithm>
#include "absl/status/status.h"
#include "gtest/gtest.h"
#include <grpc/grpc.h>
#include <grpc/grpc_security.h>
#include <grpc/support/log.h>
#include "src/core/lib/channel/channel_stack.h"
#include "src/core/lib/channel/channel_stack_builder_impl.h"
#include "src/core/lib/config/core_configuration.h"
#include "src/core/lib/iomgr/closure.h"
#include "src/core/lib/iomgr/error.h"
#include "test/core/util/test_config.h"
namespace grpc_core {
namespace testing {
namespace {
grpc_error_handle ChannelInitFunc(grpc_channel_element* /*elem*/,
grpc_channel_element_args* /*args*/) {
return absl::OkStatus();
}
grpc_error_handle CallInitFunc(grpc_call_element* /*elem*/,
const grpc_call_element_args* /*args*/) {
return absl::OkStatus();
}
void ChannelDestroyFunc(grpc_channel_element* /*elem*/) {}
void CallDestroyFunc(grpc_call_element* /*elem*/,
const grpc_call_final_info* /*final_info*/,
grpc_closure* /*ignored*/) {}
bool g_replacement_fn_called = false;
bool g_original_fn_called = false;
void SetReplacementFnCalled(grpc_channel_stack*, grpc_channel_element*) {
g_replacement_fn_called = true;
}
void SetOriginalFnCalled(grpc_channel_stack*, grpc_channel_element*) {
g_original_fn_called = true;
}
TEST(ChannelStackBuilderTest, ReplaceFilter) {
grpc_channel_credentials* creds = grpc_insecure_credentials_create();
grpc_channel* channel =
grpc_channel_create("target name isn't used", creds, nullptr);
grpc_channel_credentials_release(creds);
GPR_ASSERT(channel != nullptr);
// Make sure the high priority filter has been created.
GPR_ASSERT(g_replacement_fn_called);
// ... and that the low priority one hasn't.
GPR_ASSERT(!g_original_fn_called);
grpc_channel_destroy(channel);
}
const grpc_channel_filter replacement_filter = {
grpc_call_next_op, nullptr,
grpc_channel_next_op, 0,
CallInitFunc, grpc_call_stack_ignore_set_pollset_or_pollset_set,
CallDestroyFunc, 0,
ChannelInitFunc, SetReplacementFnCalled,
ChannelDestroyFunc, grpc_channel_next_get_info,
"filter_name"};
const grpc_channel_filter original_filter = {
grpc_call_next_op, nullptr,
grpc_channel_next_op, 0,
CallInitFunc, grpc_call_stack_ignore_set_pollset_or_pollset_set,
CallDestroyFunc, 0,
ChannelInitFunc, SetOriginalFnCalled,
ChannelDestroyFunc, grpc_channel_next_get_info,
"filter_name"};
bool AddReplacementFilter(ChannelStackBuilder* builder) {
// Get rid of any other version of the filter, as determined by having the
// same name.
auto* stk = builder->mutable_stack();
stk->erase(std::remove_if(stk->begin(), stk->end(),
[](const grpc_channel_filter* entry) {
return strcmp(entry->name, "filter_name") == 0;
}),
stk->end());
builder->PrependFilter(&replacement_filter);
return true;
}
bool AddOriginalFilter(ChannelStackBuilder* builder) {
builder->PrependFilter(&original_filter);
return true;
}
TEST(ChannelStackBuilder, UnknownTarget) {
ChannelStackBuilderImpl builder("alpha-beta-gamma", GRPC_CLIENT_CHANNEL,
ChannelArgs());
EXPECT_EQ(builder.target(), "unknown");
}
} // namespace
} // namespace testing
} // namespace grpc_core
int main(int argc, char** argv) {
::testing::InitGoogleTest(&argc, argv);
grpc::testing::TestEnvironment env(&argc, argv);
grpc_core::CoreConfiguration::RegisterBuilder(
[](grpc_core::CoreConfiguration::Builder* builder) {
builder->channel_init()->RegisterStage(
GRPC_CLIENT_CHANNEL, INT_MAX,
grpc_core::testing::AddOriginalFilter);
builder->channel_init()->RegisterStage(
GRPC_CLIENT_CHANNEL, INT_MAX,
grpc_core::testing::AddReplacementFilter);
});
grpc_init();
int ret = RUN_ALL_TESTS();
grpc_shutdown();
return ret;
}
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