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/*
*
* Copyright 2015-2016 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 "test/cpp/util/create_test_channel.h"
#include <grpc/support/log.h>
#include <grpcpp/create_channel.h>
#include <grpcpp/security/credentials.h>
#include "y_absl/flags/flag.h"
#include "test/cpp/util/test_credentials_provider.h"
Y_ABSL_FLAG(TString, grpc_test_use_grpclb_with_child_policy, "",
"If non-empty, set a static service config on channels created by "
"grpc::CreateTestChannel, that configures the grpclb LB policy "
"with a child policy being the value of this flag (e.g. round_robin "
"or pick_first).");
namespace grpc {
namespace {
const char kProdTlsCredentialsType[] = "prod_ssl";
class SslCredentialProvider : public testing::CredentialTypeProvider {
public:
std::shared_ptr<ChannelCredentials> GetChannelCredentials(
grpc::ChannelArguments* /*args*/) override {
return grpc::SslCredentials(SslCredentialsOptions());
}
std::shared_ptr<ServerCredentials> GetServerCredentials() override {
return nullptr;
}
};
gpr_once g_once_init_add_prod_ssl_provider = GPR_ONCE_INIT;
// Register ssl with non-test roots type to the credentials provider.
void AddProdSslType() {
testing::GetCredentialsProvider()->AddSecureType(
kProdTlsCredentialsType, std::unique_ptr<testing::CredentialTypeProvider>(
new SslCredentialProvider));
}
void MaybeSetCustomChannelArgs(grpc::ChannelArguments* args) {
if (!y_absl::GetFlag(FLAGS_grpc_test_use_grpclb_with_child_policy).empty()) {
args->SetString(
"grpc.service_config",
"{\"loadBalancingConfig\":[{\"grpclb\":{\"childPolicy\":[{"
"\"" +
y_absl::GetFlag(FLAGS_grpc_test_use_grpclb_with_child_policy) +
"\":{}}]}}]}");
}
}
} // namespace
// When cred_type is 'ssl', if server is empty, override_hostname is used to
// create channel. Otherwise, connect to server and override hostname if
// override_hostname is provided.
// When cred_type is not 'ssl', override_hostname is ignored.
// Set use_prod_root to true to use the SSL root for connecting to google.
// In this case, path to the roots pem file must be set via environment variable
// GRPC_DEFAULT_SSL_ROOTS_FILE_PATH.
// Otherwise, root for test SSL cert will be used.
// creds will be used to create a channel when cred_type is 'ssl'.
// Use examples:
// CreateTestChannel(
// "1.1.1.1:12345", "ssl", "override.hostname.com", false, creds);
// CreateTestChannel("test.google.com:443", "ssl", "", true, creds);
// same as above
// CreateTestChannel("", "ssl", "test.google.com:443", true, creds);
std::shared_ptr<Channel> CreateTestChannel(
const TString& server, const TString& cred_type,
const TString& override_hostname, bool use_prod_roots,
const std::shared_ptr<CallCredentials>& creds,
const ChannelArguments& args) {
return CreateTestChannel(server, cred_type, override_hostname, use_prod_roots,
creds, args,
/*interceptor_creators=*/{});
}
std::shared_ptr<Channel> CreateTestChannel(
const TString& server, const TString& override_hostname,
testing::transport_security security_type, bool use_prod_roots,
const std::shared_ptr<CallCredentials>& creds,
const ChannelArguments& args) {
return CreateTestChannel(server, override_hostname, security_type,
use_prod_roots, creds, args,
/*interceptor_creators=*/{});
}
std::shared_ptr<Channel> CreateTestChannel(
const TString& server, const TString& override_hostname,
testing::transport_security security_type, bool use_prod_roots,
const std::shared_ptr<CallCredentials>& creds) {
return CreateTestChannel(server, override_hostname, security_type,
use_prod_roots, creds, ChannelArguments());
}
std::shared_ptr<Channel> CreateTestChannel(
const TString& server, const TString& override_hostname,
testing::transport_security security_type, bool use_prod_roots) {
return CreateTestChannel(server, override_hostname, security_type,
use_prod_roots, std::shared_ptr<CallCredentials>());
}
// Shortcut for end2end and interop tests.
std::shared_ptr<Channel> CreateTestChannel(
const TString& server, testing::transport_security security_type) {
return CreateTestChannel(server, "foo.test.google.fr", security_type, false);
}
std::shared_ptr<Channel> CreateTestChannel(
const TString& server, const TString& credential_type,
const std::shared_ptr<CallCredentials>& creds) {
ChannelArguments channel_args;
MaybeSetCustomChannelArgs(&channel_args);
std::shared_ptr<ChannelCredentials> channel_creds =
testing::GetCredentialsProvider()->GetChannelCredentials(credential_type,
&channel_args);
GPR_ASSERT(channel_creds != nullptr);
if (creds.get()) {
channel_creds = grpc::CompositeChannelCredentials(channel_creds, creds);
}
return ::grpc::CreateCustomChannel(server, channel_creds, channel_args);
}
std::shared_ptr<Channel> CreateTestChannel(
const TString& server, const TString& cred_type,
const TString& override_hostname, bool use_prod_roots,
const std::shared_ptr<CallCredentials>& creds, const ChannelArguments& args,
std::vector<
std::unique_ptr<experimental::ClientInterceptorFactoryInterface>>
interceptor_creators) {
ChannelArguments channel_args(args);
MaybeSetCustomChannelArgs(&channel_args);
std::shared_ptr<ChannelCredentials> channel_creds;
if (cred_type.empty()) {
if (interceptor_creators.empty()) {
return ::grpc::CreateCustomChannel(server, InsecureChannelCredentials(),
channel_args);
} else {
return experimental::CreateCustomChannelWithInterceptors(
server, InsecureChannelCredentials(), channel_args,
std::move(interceptor_creators));
}
} else if (cred_type == testing::kTlsCredentialsType) { // cred_type == "ssl"
if (use_prod_roots) {
gpr_once_init(&g_once_init_add_prod_ssl_provider, &AddProdSslType);
channel_creds = testing::GetCredentialsProvider()->GetChannelCredentials(
kProdTlsCredentialsType, &channel_args);
if (!server.empty() && !override_hostname.empty()) {
channel_args.SetSslTargetNameOverride(override_hostname);
}
} else {
// override_hostname is discarded as the provider handles it.
channel_creds = testing::GetCredentialsProvider()->GetChannelCredentials(
testing::kTlsCredentialsType, &channel_args);
}
GPR_ASSERT(channel_creds != nullptr);
const TString& connect_to = server.empty() ? override_hostname : server;
if (creds.get()) {
channel_creds = grpc::CompositeChannelCredentials(channel_creds, creds);
}
if (interceptor_creators.empty()) {
return ::grpc::CreateCustomChannel(connect_to, channel_creds,
channel_args);
} else {
return experimental::CreateCustomChannelWithInterceptors(
connect_to, channel_creds, channel_args,
std::move(interceptor_creators));
}
} else {
channel_creds = testing::GetCredentialsProvider()->GetChannelCredentials(
cred_type, &channel_args);
GPR_ASSERT(channel_creds != nullptr);
if (interceptor_creators.empty()) {
return ::grpc::CreateCustomChannel(server, channel_creds, channel_args);
} else {
return experimental::CreateCustomChannelWithInterceptors(
server, channel_creds, channel_args, std::move(interceptor_creators));
}
}
}
std::shared_ptr<Channel> CreateTestChannel(
const TString& server, const TString& override_hostname,
testing::transport_security security_type, bool use_prod_roots,
const std::shared_ptr<CallCredentials>& creds, const ChannelArguments& args,
std::vector<
std::unique_ptr<experimental::ClientInterceptorFactoryInterface>>
interceptor_creators) {
TString credential_type =
security_type == testing::ALTS
? testing::kAltsCredentialsType
: (security_type == testing::TLS ? testing::kTlsCredentialsType
: testing::kInsecureCredentialsType);
return CreateTestChannel(server, credential_type, override_hostname,
use_prod_roots, creds, args,
std::move(interceptor_creators));
}
std::shared_ptr<Channel> CreateTestChannel(
const TString& server, const TString& override_hostname,
testing::transport_security security_type, bool use_prod_roots,
const std::shared_ptr<CallCredentials>& creds,
std::vector<
std::unique_ptr<experimental::ClientInterceptorFactoryInterface>>
interceptor_creators) {
return CreateTestChannel(server, override_hostname, security_type,
use_prod_roots, creds, ChannelArguments(),
std::move(interceptor_creators));
}
std::shared_ptr<Channel> CreateTestChannel(
const TString& server, const TString& credential_type,
const std::shared_ptr<CallCredentials>& creds,
std::vector<
std::unique_ptr<experimental::ClientInterceptorFactoryInterface>>
interceptor_creators) {
ChannelArguments channel_args;
MaybeSetCustomChannelArgs(&channel_args);
std::shared_ptr<ChannelCredentials> channel_creds =
testing::GetCredentialsProvider()->GetChannelCredentials(credential_type,
&channel_args);
GPR_ASSERT(channel_creds != nullptr);
if (creds.get()) {
channel_creds = grpc::CompositeChannelCredentials(channel_creds, creds);
}
return experimental::CreateCustomChannelWithInterceptors(
server, channel_creds, channel_args, std::move(interceptor_creators));
}
} // namespace grpc
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