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/*
*
* Copyright 2015-2016, 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 <grpc++/client_context.h>
#include <grpc/grpc.h>
#include <grpc/support/alloc.h>
#include <grpc/support/string_util.h>
#include <grpc++/security/credentials.h>
#include <grpc++/server_context.h>
#include <grpc++/support/time.h>
#include "src/core/channel/compress_filter.h"
#include "src/cpp/common/create_auth_context.h"
namespace grpc {
class DefaultGlobalClientCallbacks GRPC_FINAL
: public ClientContext::GlobalCallbacks {
public:
~DefaultGlobalClientCallbacks() GRPC_OVERRIDE {}
void DefaultConstructor(ClientContext* context) GRPC_OVERRIDE {}
void Destructor(ClientContext* context) GRPC_OVERRIDE {}
};
static DefaultGlobalClientCallbacks g_default_client_callbacks;
static ClientContext::GlobalCallbacks* g_client_callbacks =
&g_default_client_callbacks;
ClientContext::ClientContext()
: initial_metadata_received_(false),
call_(nullptr),
call_canceled_(false),
deadline_(gpr_inf_future(GPR_CLOCK_REALTIME)),
propagate_from_call_(nullptr) {
g_client_callbacks->DefaultConstructor(this);
}
ClientContext::~ClientContext() {
if (call_) {
grpc_call_destroy(call_);
}
g_client_callbacks->Destructor(this);
}
std::unique_ptr<ClientContext> ClientContext::FromServerContext(
const ServerContext& context, PropagationOptions options) {
std::unique_ptr<ClientContext> ctx(new ClientContext);
ctx->propagate_from_call_ = context.call_;
ctx->propagation_options_ = options;
return ctx;
}
void ClientContext::AddMetadata(const grpc::string& meta_key,
const grpc::string& meta_value) {
send_initial_metadata_.insert(std::make_pair(meta_key, meta_value));
}
void ClientContext::set_call(grpc_call* call,
const std::shared_ptr<Channel>& channel) {
grpc::unique_lock<grpc::mutex> lock(mu_);
GPR_ASSERT(call_ == nullptr);
call_ = call;
channel_ = channel;
if (creds_ && !creds_->ApplyToCall(call_)) {
grpc_call_cancel_with_status(call, GRPC_STATUS_CANCELLED,
"Failed to set credentials to rpc.", nullptr);
}
if (call_canceled_) {
grpc_call_cancel(call_, nullptr);
}
}
void ClientContext::set_compression_algorithm(
grpc_compression_algorithm algorithm) {
char* algorithm_name = nullptr;
if (!grpc_compression_algorithm_name(algorithm, &algorithm_name)) {
gpr_log(GPR_ERROR, "Name for compression algorithm '%d' unknown.",
algorithm);
abort();
}
GPR_ASSERT(algorithm_name != nullptr);
AddMetadata(GRPC_COMPRESS_REQUEST_ALGORITHM_KEY, algorithm_name);
}
std::shared_ptr<const AuthContext> ClientContext::auth_context() const {
if (auth_context_.get() == nullptr) {
auth_context_ = CreateAuthContext(call_);
}
return auth_context_;
}
void ClientContext::TryCancel() {
grpc::unique_lock<grpc::mutex> lock(mu_);
if (call_) {
grpc_call_cancel(call_, nullptr);
} else {
call_canceled_ = true;
}
}
grpc::string ClientContext::peer() const {
grpc::string peer;
if (call_) {
char* c_peer = grpc_call_get_peer(call_);
peer = c_peer;
gpr_free(c_peer);
}
return peer;
}
void ClientContext::SetGlobalCallbacks(GlobalCallbacks* client_callbacks) {
GPR_ASSERT(g_client_callbacks == &g_default_client_callbacks);
GPR_ASSERT(client_callbacks != NULL);
GPR_ASSERT(client_callbacks != &g_default_client_callbacks);
g_client_callbacks = client_callbacks;
}
} // namespace grpc
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