Merge pull request #1261 from ctiller/registered_calls

Registered calls
pull/1303/head
Yang Gao 10 years ago
commit b12dc6b5bc
  1. 253
      Makefile
  2. 1
      include/grpc++/channel_interface.h
  3. 9
      include/grpc++/impl/internal_stub.h
  4. 10
      include/grpc++/impl/rpc_method.h
  5. 2
      include/grpc++/impl/rpc_service_method.h
  6. 12
      include/grpc/grpc.h
  7. 131
      src/compiler/cpp_generator.cc
  8. 87
      src/core/surface/channel.c
  9. 13
      src/cpp/client/channel.cc
  10. 1
      src/cpp/client/channel.h
  11. 10
      src/cpp/client/generic_stub.cc
  12. 1
      test/core/end2end/gen_build_json.py
  13. 222
      test/core/end2end/tests/registered_call.c
  14. 63
      tools/run_tests/tests.json

File diff suppressed because one or more lines are too long

@ -51,6 +51,7 @@ class ChannelInterface : public CallHook {
public: public:
virtual ~ChannelInterface() {} virtual ~ChannelInterface() {}
virtual void *RegisterMethod(const char *method_name) = 0;
virtual Call CreateCall(const RpcMethod& method, ClientContext* context, virtual Call CreateCall(const RpcMethod& method, ClientContext* context,
CompletionQueue* cq) = 0; CompletionQueue* cq) = 0;
}; };

@ -42,17 +42,14 @@ namespace grpc {
class InternalStub { class InternalStub {
public: public:
InternalStub() {} InternalStub(const std::shared_ptr<ChannelInterface>& channel)
: channel_(channel) {}
virtual ~InternalStub() {} virtual ~InternalStub() {}
void set_channel(const std::shared_ptr<ChannelInterface>& channel) {
channel_ = channel;
}
ChannelInterface* channel() { return channel_.get(); } ChannelInterface* channel() { return channel_.get(); }
private: private:
std::shared_ptr<ChannelInterface> channel_; const std::shared_ptr<ChannelInterface> channel_;
}; };
} // namespace grpc } // namespace grpc

@ -45,17 +45,17 @@ class RpcMethod {
BIDI_STREAMING BIDI_STREAMING
}; };
explicit RpcMethod(const char* name) RpcMethod(const char* name, RpcType type, void* channel_tag)
: name_(name), method_type_(NORMAL_RPC) {} : name_(name), method_type_(type), channel_tag_(channel_tag) {}
RpcMethod(const char* name, RpcType type) : name_(name), method_type_(type) {}
const char* name() const { return name_; } const char* name() const { return name_; }
RpcType method_type() const { return method_type_; } RpcType method_type() const { return method_type_; }
void* channel_tag() const { return channel_tag_; }
private: private:
const char* name_; const char* const name_;
const RpcType method_type_; const RpcType method_type_;
void* const channel_tag_;
}; };
} // namespace grpc } // namespace grpc

@ -167,7 +167,7 @@ class RpcServiceMethod : public RpcMethod {
MethodHandler* handler, MethodHandler* handler,
grpc::protobuf::Message* request_prototype, grpc::protobuf::Message* request_prototype,
grpc::protobuf::Message* response_prototype) grpc::protobuf::Message* response_prototype)
: RpcMethod(name, type), : RpcMethod(name, type, nullptr),
handler_(handler), handler_(handler),
request_prototype_(request_prototype), request_prototype_(request_prototype),
response_prototype_(response_prototype) {} response_prototype_(response_prototype) {}

@ -421,6 +421,15 @@ grpc_call *grpc_channel_create_call(grpc_channel *channel,
const char *method, const char *host, const char *method, const char *host,
gpr_timespec deadline); gpr_timespec deadline);
/* Pre-register a method/host pair on a channel. */
void *grpc_channel_register_call(grpc_channel *channel, const char *method,
const char *host);
/* Create a call given a handle returned from grpc_channel_register_call */
grpc_call *grpc_channel_create_registered_call(
grpc_channel *channel, grpc_completion_queue *completion_queue,
void *registered_call_handle, gpr_timespec deadline);
/* Start a batch of operations defined in the array ops; when complete, post a /* Start a batch of operations defined in the array ops; when complete, post a
completion of type 'tag' to the completion queue bound to the call. completion of type 'tag' to the completion queue bound to the call.
The order of ops specified in the batch has no significance. The order of ops specified in the batch has no significance.
@ -579,8 +588,7 @@ grpc_call_error grpc_server_request_call_old(grpc_server *server,
grpc_call_error grpc_server_request_call( grpc_call_error grpc_server_request_call(
grpc_server *server, grpc_call **call, grpc_call_details *details, grpc_server *server, grpc_call **call, grpc_call_details *details,
grpc_metadata_array *request_metadata, grpc_metadata_array *request_metadata,
grpc_completion_queue *cq_bound_to_call, grpc_completion_queue *cq_bound_to_call, void *tag_new);
void *tag_new);
/* Registers a method in the server. /* Registers a method in the server.
Methods to this (host, method) pair will not be reported by Methods to this (host, method) pair will not be reported by

@ -110,7 +110,7 @@ bool HasBidiStreaming(const grpc::protobuf::FileDescriptor *file) {
return false; return false;
} }
grpc::string FilenameIdentifier(const grpc::string& filename) { grpc::string FilenameIdentifier(const grpc::string &filename) {
grpc::string result; grpc::string result;
for (unsigned i = 0; i < filename.size(); i++) { for (unsigned i = 0; i < filename.size(); i++) {
char c = filename[i]; char c = filename[i];
@ -154,6 +154,7 @@ grpc::string GetHeaderIncludes(const grpc::protobuf::FileDescriptor *file,
const Parameters &params) { const Parameters &params) {
grpc::string temp = grpc::string temp =
"#include <grpc++/impl/internal_stub.h>\n" "#include <grpc++/impl/internal_stub.h>\n"
"#include <grpc++/impl/rpc_method.h>\n"
"#include <grpc++/impl/service_type.h>\n" "#include <grpc++/impl/service_type.h>\n"
"#include <grpc++/status.h>\n" "#include <grpc++/status.h>\n"
"\n" "\n"
@ -172,7 +173,9 @@ grpc::string GetHeaderIncludes(const grpc::protobuf::FileDescriptor *file,
temp.append("template <class OutMessage> class ClientWriter;\n"); temp.append("template <class OutMessage> class ClientWriter;\n");
temp.append("template <class InMessage> class ServerReader;\n"); temp.append("template <class InMessage> class ServerReader;\n");
temp.append("template <class OutMessage> class ClientAsyncWriter;\n"); temp.append("template <class OutMessage> class ClientAsyncWriter;\n");
temp.append("template <class OutMessage, class InMessage> class ServerAsyncReader;\n"); temp.append(
"template <class OutMessage, class InMessage> class "
"ServerAsyncReader;\n");
} }
if (HasServerOnlyStreaming(file)) { if (HasServerOnlyStreaming(file)) {
temp.append("template <class InMessage> class ClientReader;\n"); temp.append("template <class InMessage> class ClientReader;\n");
@ -246,9 +249,9 @@ void PrintHeaderClientMethod(grpc::protobuf::io::Printer *printer,
*vars, *vars,
"std::unique_ptr< ::grpc::ClientReader< $Response$>> $Method$(" "std::unique_ptr< ::grpc::ClientReader< $Response$>> $Method$("
"::grpc::ClientContext* context, const $Request$& request);\n"); "::grpc::ClientContext* context, const $Request$& request);\n");
printer->Print( printer->Print(*vars,
*vars, "std::unique_ptr< ::grpc::ClientAsyncReader< $Response$>> "
"std::unique_ptr< ::grpc::ClientAsyncReader< $Response$>> Async$Method$(" "Async$Method$("
"::grpc::ClientContext* context, const $Request$& request, " "::grpc::ClientContext* context, const $Request$& request, "
"::grpc::CompletionQueue* cq, void* tag);\n"); "::grpc::CompletionQueue* cq, void* tag);\n");
} else if (BidiStreaming(method)) { } else if (BidiStreaming(method)) {
@ -264,8 +267,14 @@ void PrintHeaderClientMethod(grpc::protobuf::io::Printer *printer,
} }
} }
void PrintHeaderServerMethodSync( void PrintHeaderClientMethodData(grpc::protobuf::io::Printer *printer,
grpc::protobuf::io::Printer *printer, const grpc::protobuf::MethodDescriptor *method,
std::map<grpc::string, grpc::string> *vars) {
(*vars)["Method"] = method->name();
printer->Print(*vars, "const ::grpc::RpcMethod rpcmethod_$Method$_;\n");
}
void PrintHeaderServerMethodSync(grpc::protobuf::io::Printer *printer,
const grpc::protobuf::MethodDescriptor *method, const grpc::protobuf::MethodDescriptor *method,
std::map<grpc::string, grpc::string> *vars) { std::map<grpc::string, grpc::string> *vars) {
(*vars)["Method"] = method->name(); (*vars)["Method"] = method->name();
@ -351,10 +360,18 @@ void PrintHeaderService(grpc::protobuf::io::Printer *printer,
"class Stub GRPC_FINAL : public ::grpc::InternalStub {\n" "class Stub GRPC_FINAL : public ::grpc::InternalStub {\n"
" public:\n"); " public:\n");
printer->Indent(); printer->Indent();
printer->Print(
"Stub(const std::shared_ptr< ::grpc::ChannelInterface>& channel);\n");
for (int i = 0; i < service->method_count(); ++i) { for (int i = 0; i < service->method_count(); ++i) {
PrintHeaderClientMethod(printer, service->method(i), vars); PrintHeaderClientMethod(printer, service->method(i), vars);
} }
printer->Outdent(); printer->Outdent();
printer->Print(" private:\n");
printer->Indent();
for (int i = 0; i < service->method_count(); ++i) {
PrintHeaderClientMethodData(printer, service->method(i), vars);
}
printer->Outdent();
printer->Print("};\n"); printer->Print("};\n");
printer->Print( printer->Print(
"static std::unique_ptr<Stub> NewStub(const std::shared_ptr< " "static std::unique_ptr<Stub> NewStub(const std::shared_ptr< "
@ -479,7 +496,6 @@ grpc::string GetSourceIncludes(const grpc::protobuf::FileDescriptor *file,
printer.Print(vars, "#include <grpc++/async_unary_call.h>\n"); printer.Print(vars, "#include <grpc++/async_unary_call.h>\n");
printer.Print(vars, "#include <grpc++/channel_interface.h>\n"); printer.Print(vars, "#include <grpc++/channel_interface.h>\n");
printer.Print(vars, "#include <grpc++/impl/client_unary_call.h>\n"); printer.Print(vars, "#include <grpc++/impl/client_unary_call.h>\n");
printer.Print(vars, "#include <grpc++/impl/rpc_method.h>\n");
printer.Print(vars, "#include <grpc++/impl/rpc_service_method.h>\n"); printer.Print(vars, "#include <grpc++/impl/rpc_service_method.h>\n");
printer.Print(vars, "#include <grpc++/impl/service_type.h>\n"); printer.Print(vars, "#include <grpc++/impl/service_type.h>\n");
printer.Print(vars, "#include <grpc++/stream.h>\n"); printer.Print(vars, "#include <grpc++/stream.h>\n");
@ -513,8 +529,8 @@ void PrintSourceClientMethod(grpc::protobuf::io::Printer *printer,
"::grpc::ClientContext* context, " "::grpc::ClientContext* context, "
"const $Request$& request, $Response$* response) {\n"); "const $Request$& request, $Response$* response) {\n");
printer->Print(*vars, printer->Print(*vars,
" return ::grpc::BlockingUnaryCall(channel()," " return ::grpc::BlockingUnaryCall(channel(), "
"::grpc::RpcMethod($prefix$$Service$_method_names[$Idx$]), " "rpcmethod_$Method$_, "
"context, request, response);\n" "context, request, response);\n"
"}\n\n"); "}\n\n");
printer->Print( printer->Print(
@ -528,7 +544,7 @@ void PrintSourceClientMethod(grpc::protobuf::io::Printer *printer,
"::grpc::ClientAsyncResponseReader< $Response$>>(new " "::grpc::ClientAsyncResponseReader< $Response$>>(new "
"::grpc::ClientAsyncResponseReader< $Response$>(" "::grpc::ClientAsyncResponseReader< $Response$>("
"channel(), cq, " "channel(), cq, "
"::grpc::RpcMethod($prefix$$Service$_method_names[$Idx$]), " "rpcmethod_$Method$_, "
"context, request, tag));\n" "context, request, tag));\n"
"}\n\n"); "}\n\n");
} else if (ClientOnlyStreaming(method)) { } else if (ClientOnlyStreaming(method)) {
@ -540,8 +556,7 @@ void PrintSourceClientMethod(grpc::protobuf::io::Printer *printer,
" return std::unique_ptr< ::grpc::ClientWriter< " " return std::unique_ptr< ::grpc::ClientWriter< "
"$Request$>>(new ::grpc::ClientWriter< $Request$>(" "$Request$>>(new ::grpc::ClientWriter< $Request$>("
"channel()," "channel(),"
"::grpc::RpcMethod($prefix$$Service$_method_names[$Idx$], " "rpcmethod_$Method$_, "
"::grpc::RpcMethod::RpcType::CLIENT_STREAMING), "
"context, response));\n" "context, response));\n"
"}\n\n"); "}\n\n");
printer->Print(*vars, printer->Print(*vars,
@ -553,8 +568,7 @@ void PrintSourceClientMethod(grpc::protobuf::io::Printer *printer,
" return std::unique_ptr< ::grpc::ClientAsyncWriter< " " return std::unique_ptr< ::grpc::ClientAsyncWriter< "
"$Request$>>(new ::grpc::ClientAsyncWriter< $Request$>(" "$Request$>>(new ::grpc::ClientAsyncWriter< $Request$>("
"channel(), cq, " "channel(), cq, "
"::grpc::RpcMethod($prefix$$Service$_method_names[$Idx$], " "rpcmethod_$Method$_, "
"::grpc::RpcMethod::RpcType::CLIENT_STREAMING), "
"context, response, tag));\n" "context, response, tag));\n"
"}\n\n"); "}\n\n");
} else if (ServerOnlyStreaming(method)) { } else if (ServerOnlyStreaming(method)) {
@ -567,8 +581,7 @@ void PrintSourceClientMethod(grpc::protobuf::io::Printer *printer,
" return std::unique_ptr< ::grpc::ClientReader< " " return std::unique_ptr< ::grpc::ClientReader< "
"$Response$>>(new ::grpc::ClientReader< $Response$>(" "$Response$>>(new ::grpc::ClientReader< $Response$>("
"channel()," "channel(),"
"::grpc::RpcMethod($prefix$$Service$_method_names[$Idx$], " "rpcmethod_$Method$_, "
"::grpc::RpcMethod::RpcType::SERVER_STREAMING), "
"context, request));\n" "context, request));\n"
"}\n\n"); "}\n\n");
printer->Print(*vars, printer->Print(*vars,
@ -580,8 +593,7 @@ void PrintSourceClientMethod(grpc::protobuf::io::Printer *printer,
" return std::unique_ptr< ::grpc::ClientAsyncReader< " " return std::unique_ptr< ::grpc::ClientAsyncReader< "
"$Response$>>(new ::grpc::ClientAsyncReader< $Response$>(" "$Response$>>(new ::grpc::ClientAsyncReader< $Response$>("
"channel(), cq, " "channel(), cq, "
"::grpc::RpcMethod($prefix$$Service$_method_names[$Idx$], " "rpcmethod_$Method$_, "
"::grpc::RpcMethod::RpcType::SERVER_STREAMING), "
"context, request, tag));\n" "context, request, tag));\n"
"}\n\n"); "}\n\n");
} else if (BidiStreaming(method)) { } else if (BidiStreaming(method)) {
@ -594,11 +606,11 @@ void PrintSourceClientMethod(grpc::protobuf::io::Printer *printer,
"$Request$, $Response$>>(new ::grpc::ClientReaderWriter< " "$Request$, $Response$>>(new ::grpc::ClientReaderWriter< "
"$Request$, $Response$>(" "$Request$, $Response$>("
"channel()," "channel(),"
"::grpc::RpcMethod($prefix$$Service$_method_names[$Idx$], " "rpcmethod_$Method$_, "
"::grpc::RpcMethod::RpcType::BIDI_STREAMING), "
"context));\n" "context));\n"
"}\n\n"); "}\n\n");
printer->Print(*vars, printer->Print(
*vars,
"std::unique_ptr< ::grpc::ClientAsyncReaderWriter< " "std::unique_ptr< ::grpc::ClientAsyncReaderWriter< "
"$Request$, $Response$>> " "$Request$, $Response$>> "
"$ns$$Service$::Stub::Async$Method$(::grpc::ClientContext* context, " "$ns$$Service$::Stub::Async$Method$(::grpc::ClientContext* context, "
@ -608,8 +620,7 @@ void PrintSourceClientMethod(grpc::protobuf::io::Printer *printer,
"$Request$, $Response$>>(new " "$Request$, $Response$>>(new "
"::grpc::ClientAsyncReaderWriter< $Request$, $Response$>(" "::grpc::ClientAsyncReaderWriter< $Request$, $Response$>("
"channel(), cq, " "channel(), cq, "
"::grpc::RpcMethod($prefix$$Service$_method_names[$Idx$], " "rpcmethod_$Method$_, "
"::grpc::RpcMethod::RpcType::BIDI_STREAMING), "
"context, tag));\n" "context, tag));\n"
"}\n\n"); "}\n\n");
} }
@ -681,9 +692,9 @@ void PrintSourceServerAsyncMethod(
"$Request$* request, " "$Request$* request, "
"::grpc::ServerAsyncResponseWriter< $Response$>* response, " "::grpc::ServerAsyncResponseWriter< $Response$>* response, "
"::grpc::CompletionQueue* cq, void* tag) {\n"); "::grpc::CompletionQueue* cq, void* tag) {\n");
printer->Print( printer->Print(*vars,
*vars, " AsynchronousService::RequestAsyncUnary($Idx$, context, "
" AsynchronousService::RequestAsyncUnary($Idx$, context, request, response, cq, tag);\n"); "request, response, cq, tag);\n");
printer->Print("}\n\n"); printer->Print("}\n\n");
} else if (ClientOnlyStreaming(method)) { } else if (ClientOnlyStreaming(method)) {
printer->Print(*vars, printer->Print(*vars,
@ -691,9 +702,9 @@ void PrintSourceServerAsyncMethod(
"::grpc::ServerContext* context, " "::grpc::ServerContext* context, "
"::grpc::ServerAsyncReader< $Response$, $Request$>* reader, " "::grpc::ServerAsyncReader< $Response$, $Request$>* reader, "
"::grpc::CompletionQueue* cq, void* tag) {\n"); "::grpc::CompletionQueue* cq, void* tag) {\n");
printer->Print( printer->Print(*vars,
*vars, " AsynchronousService::RequestClientStreaming($Idx$, "
" AsynchronousService::RequestClientStreaming($Idx$, context, reader, cq, tag);\n"); "context, reader, cq, tag);\n");
printer->Print("}\n\n"); printer->Print("}\n\n");
} else if (ServerOnlyStreaming(method)) { } else if (ServerOnlyStreaming(method)) {
printer->Print(*vars, printer->Print(*vars,
@ -702,9 +713,9 @@ void PrintSourceServerAsyncMethod(
"$Request$* request, " "$Request$* request, "
"::grpc::ServerAsyncWriter< $Response$>* writer, " "::grpc::ServerAsyncWriter< $Response$>* writer, "
"::grpc::CompletionQueue* cq, void* tag) {\n"); "::grpc::CompletionQueue* cq, void* tag) {\n");
printer->Print( printer->Print(*vars,
*vars, " AsynchronousService::RequestServerStreaming($Idx$, "
" AsynchronousService::RequestServerStreaming($Idx$, context, request, writer, cq, tag);\n"); "context, request, writer, cq, tag);\n");
printer->Print("}\n\n"); printer->Print("}\n\n");
} else if (BidiStreaming(method)) { } else if (BidiStreaming(method)) {
printer->Print( printer->Print(
@ -713,9 +724,9 @@ void PrintSourceServerAsyncMethod(
"::grpc::ServerContext* context, " "::grpc::ServerContext* context, "
"::grpc::ServerAsyncReaderWriter< $Response$, $Request$>* stream, " "::grpc::ServerAsyncReaderWriter< $Response$, $Request$>* stream, "
"::grpc::CompletionQueue* cq, void *tag) {\n"); "::grpc::CompletionQueue* cq, void *tag) {\n");
printer->Print( printer->Print(*vars,
*vars, " AsynchronousService::RequestBidiStreaming($Idx$, "
" AsynchronousService::RequestBidiStreaming($Idx$, context, stream, cq, tag);\n"); "context, stream, cq, tag);\n");
printer->Print("}\n\n"); printer->Print("}\n\n");
} }
} }
@ -725,7 +736,8 @@ void PrintSourceService(grpc::protobuf::io::Printer *printer,
std::map<grpc::string, grpc::string> *vars) { std::map<grpc::string, grpc::string> *vars) {
(*vars)["Service"] = service->name(); (*vars)["Service"] = service->name();
printer->Print(*vars, "static const char* $prefix$$Service$_method_names[] = {\n"); printer->Print(*vars,
"static const char* $prefix$$Service$_method_names[] = {\n");
for (int i = 0; i < service->method_count(); ++i) { for (int i = 0; i < service->method_count(); ++i) {
(*vars)["Method"] = service->method(i)->name(); (*vars)["Method"] = service->method(i)->name();
printer->Print(*vars, " \"/$Package$$Service$/$Method$\",\n"); printer->Print(*vars, " \"/$Package$$Service$/$Method$\",\n");
@ -736,20 +748,50 @@ void PrintSourceService(grpc::protobuf::io::Printer *printer,
*vars, *vars,
"std::unique_ptr< $ns$$Service$::Stub> $ns$$Service$::NewStub(" "std::unique_ptr< $ns$$Service$::Stub> $ns$$Service$::NewStub("
"const std::shared_ptr< ::grpc::ChannelInterface>& channel) {\n" "const std::shared_ptr< ::grpc::ChannelInterface>& channel) {\n"
" std::unique_ptr< $ns$$Service$::Stub> stub(new $ns$$Service$::Stub());\n" " std::unique_ptr< $ns$$Service$::Stub> stub(new "
" stub->set_channel(channel);\n" "$ns$$Service$::Stub(channel));\n"
" return stub;\n" " return stub;\n"
"}\n\n"); "}\n\n");
printer->Print(*vars,
"$ns$$Service$::Stub::Stub(const std::shared_ptr< "
"::grpc::ChannelInterface>& channel)\n");
printer->Indent();
printer->Print(": ::grpc::InternalStub(channel)");
for (int i = 0; i < service->method_count(); ++i) {
const grpc::protobuf::MethodDescriptor *method = service->method(i);
(*vars)["Method"] = method->name();
(*vars)["Idx"] = as_string(i);
if (NoStreaming(method)) {
(*vars)["StreamingType"] = "NORMAL_RPC";
} else if (ClientOnlyStreaming(method)) {
(*vars)["StreamingType"] = "CLIENT_STREAMING";
} else if (ServerOnlyStreaming(method)) {
(*vars)["StreamingType"] = "SERVER_STREAMING";
} else {
(*vars)["StreamingType"] = "BIDI_STREAMING";
}
printer->Print(
*vars,
", rpcmethod_$Method$_("
"$prefix$$Service$_method_names[$Idx$], "
"::grpc::RpcMethod::$StreamingType$, "
"channel->RegisterMethod($prefix$$Service$_method_names[$Idx$])"
")\n");
}
printer->Print("{}\n\n");
printer->Outdent();
for (int i = 0; i < service->method_count(); ++i) { for (int i = 0; i < service->method_count(); ++i) {
(*vars)["Idx"] = as_string(i); (*vars)["Idx"] = as_string(i);
PrintSourceClientMethod(printer, service->method(i), vars); PrintSourceClientMethod(printer, service->method(i), vars);
} }
(*vars)["MethodCount"] = as_string(service->method_count()); (*vars)["MethodCount"] = as_string(service->method_count());
printer->Print( printer->Print(*vars,
*vars, "$ns$$Service$::AsyncService::AsyncService(::grpc::"
"$ns$$Service$::AsyncService::AsyncService(::grpc::CompletionQueue* cq) : " "CompletionQueue* cq) : "
"::grpc::AsynchronousService(cq, $prefix$$Service$_method_names, $MethodCount$) " "::grpc::AsynchronousService(cq, "
"$prefix$$Service$_method_names, $MethodCount$) "
"{}\n\n"); "{}\n\n");
printer->Print(*vars, printer->Print(*vars,
@ -783,7 +825,8 @@ void PrintSourceService(grpc::protobuf::io::Printer *printer,
"service_->AddMethod(new ::grpc::RpcServiceMethod(\n" "service_->AddMethod(new ::grpc::RpcServiceMethod(\n"
" $prefix$$Service$_method_names[$Idx$],\n" " $prefix$$Service$_method_names[$Idx$],\n"
" ::grpc::RpcMethod::NORMAL_RPC,\n" " ::grpc::RpcMethod::NORMAL_RPC,\n"
" new ::grpc::RpcMethodHandler< $ns$$Service$::Service, $Request$, " " new ::grpc::RpcMethodHandler< $ns$$Service$::Service, "
"$Request$, "
"$Response$>(\n" "$Response$>(\n"
" std::function< ::grpc::Status($ns$$Service$::Service*, " " std::function< ::grpc::Status($ns$$Service$::Service*, "
"::grpc::ServerContext*, const $Request$*, $Response$*)>(" "::grpc::ServerContext*, const $Request$*, $Response$*)>("

@ -43,6 +43,12 @@
#include <grpc/support/alloc.h> #include <grpc/support/alloc.h>
#include <grpc/support/log.h> #include <grpc/support/log.h>
typedef struct registered_call {
grpc_mdelem *path;
grpc_mdelem *authority;
struct registered_call *next;
} registered_call;
struct grpc_channel { struct grpc_channel {
int is_client; int is_client;
gpr_refcount refs; gpr_refcount refs;
@ -51,10 +57,14 @@ struct grpc_channel {
grpc_mdstr *grpc_message_string; grpc_mdstr *grpc_message_string;
grpc_mdstr *path_string; grpc_mdstr *path_string;
grpc_mdstr *authority_string; grpc_mdstr *authority_string;
gpr_mu registered_call_mu;
registered_call *registered_calls;
}; };
#define CHANNEL_STACK_FROM_CHANNEL(c) ((grpc_channel_stack *)((c)+1)) #define CHANNEL_STACK_FROM_CHANNEL(c) ((grpc_channel_stack *)((c)+1))
#define CHANNEL_FROM_CHANNEL_STACK(channel_stack) (((grpc_channel *)(channel_stack)) - 1) #define CHANNEL_FROM_CHANNEL_STACK(channel_stack) \
(((grpc_channel *)(channel_stack)) - 1)
#define CHANNEL_FROM_TOP_ELEM(top_elem) \ #define CHANNEL_FROM_TOP_ELEM(top_elem) \
CHANNEL_FROM_CHANNEL_STACK(grpc_channel_stack_from_top_element(top_elem)) CHANNEL_FROM_CHANNEL_STACK(grpc_channel_stack_from_top_element(top_elem))
@ -66,7 +76,8 @@ grpc_channel *grpc_channel_create_from_filters(
grpc_channel *channel = gpr_malloc(size); grpc_channel *channel = gpr_malloc(size);
GPR_ASSERT(grpc_is_initialized() && "call grpc_init()"); GPR_ASSERT(grpc_is_initialized() && "call grpc_init()");
channel->is_client = is_client; channel->is_client = is_client;
/* decremented by grpc_channel_destroy, and grpc_client_channel_closed if is_client */ /* decremented by grpc_channel_destroy, and grpc_client_channel_closed if
* is_client */
gpr_ref_init(&channel->refs, 1 + is_client); gpr_ref_init(&channel->refs, 1 + is_client);
channel->metadata_context = mdctx; channel->metadata_context = mdctx;
channel->grpc_status_string = grpc_mdstr_from_string(mdctx, "grpc-status"); channel->grpc_status_string = grpc_mdstr_from_string(mdctx, "grpc-status");
@ -75,18 +86,17 @@ grpc_channel *grpc_channel_create_from_filters(
channel->authority_string = grpc_mdstr_from_string(mdctx, ":authority"); channel->authority_string = grpc_mdstr_from_string(mdctx, ":authority");
grpc_channel_stack_init(filters, num_filters, args, channel->metadata_context, grpc_channel_stack_init(filters, num_filters, args, channel->metadata_context,
CHANNEL_STACK_FROM_CHANNEL(channel)); CHANNEL_STACK_FROM_CHANNEL(channel));
gpr_mu_init(&channel->registered_call_mu);
channel->registered_calls = NULL;
return channel; return channel;
} }
static void do_nothing(void *ignored, grpc_op_error error) {} static void do_nothing(void *ignored, grpc_op_error error) {}
grpc_call *grpc_channel_create_call(grpc_channel *channel, static grpc_call *grpc_channel_create_call_internal(
grpc_completion_queue *cq, grpc_channel *channel, grpc_completion_queue *cq, grpc_mdelem *path_mdelem,
const char *method, const char *host, grpc_mdelem *authority_mdelem, gpr_timespec deadline) {
gpr_timespec absolute_deadline) {
grpc_call *call; grpc_call *call;
grpc_mdelem *path_mdelem;
grpc_mdelem *authority_mdelem;
grpc_call_op op; grpc_call_op op;
if (!channel->is_client) { if (!channel->is_client) {
@ -97,11 +107,6 @@ grpc_call *grpc_channel_create_call(grpc_channel *channel,
call = grpc_call_create(channel, cq, NULL); call = grpc_call_create(channel, cq, NULL);
/* Add :path and :authority headers. */ /* Add :path and :authority headers. */
/* TODO(klempner): Consider optimizing this by stashing mdelems for common
values of method and host. */
path_mdelem = grpc_mdelem_from_metadata_strings(
channel->metadata_context, grpc_mdstr_ref(channel->path_string),
grpc_mdstr_from_string(channel->metadata_context, method));
op.type = GRPC_SEND_METADATA; op.type = GRPC_SEND_METADATA;
op.dir = GRPC_CALL_DOWN; op.dir = GRPC_CALL_DOWN;
op.flags = 0; op.flags = 0;
@ -110,18 +115,14 @@ grpc_call *grpc_channel_create_call(grpc_channel *channel,
op.user_data = NULL; op.user_data = NULL;
grpc_call_execute_op(call, &op); grpc_call_execute_op(call, &op);
grpc_mdstr_ref(channel->authority_string);
authority_mdelem = grpc_mdelem_from_metadata_strings(
channel->metadata_context, channel->authority_string,
grpc_mdstr_from_string(channel->metadata_context, host));
op.data.metadata = authority_mdelem; op.data.metadata = authority_mdelem;
grpc_call_execute_op(call, &op); grpc_call_execute_op(call, &op);
if (0 != gpr_time_cmp(absolute_deadline, gpr_inf_future)) { if (0 != gpr_time_cmp(deadline, gpr_inf_future)) {
op.type = GRPC_SEND_DEADLINE; op.type = GRPC_SEND_DEADLINE;
op.dir = GRPC_CALL_DOWN; op.dir = GRPC_CALL_DOWN;
op.flags = 0; op.flags = 0;
op.data.deadline = absolute_deadline; op.data.deadline = deadline;
op.done_cb = do_nothing; op.done_cb = do_nothing;
op.user_data = NULL; op.user_data = NULL;
grpc_call_execute_op(call, &op); grpc_call_execute_op(call, &op);
@ -130,6 +131,21 @@ grpc_call *grpc_channel_create_call(grpc_channel *channel,
return call; return call;
} }
grpc_call *grpc_channel_create_call(grpc_channel *channel,
grpc_completion_queue *cq,
const char *method, const char *host,
gpr_timespec deadline) {
return grpc_channel_create_call_internal(
channel, cq,
grpc_mdelem_from_metadata_strings(
channel->metadata_context, grpc_mdstr_ref(channel->path_string),
grpc_mdstr_from_string(channel->metadata_context, method)),
grpc_mdelem_from_metadata_strings(
channel->metadata_context, grpc_mdstr_ref(channel->authority_string),
grpc_mdstr_from_string(channel->metadata_context, host)),
deadline);
}
grpc_call *grpc_channel_create_call_old(grpc_channel *channel, grpc_call *grpc_channel_create_call_old(grpc_channel *channel,
const char *method, const char *host, const char *method, const char *host,
gpr_timespec absolute_deadline) { gpr_timespec absolute_deadline) {
@ -137,6 +153,31 @@ grpc_call *grpc_channel_create_call_old(grpc_channel *channel,
absolute_deadline); absolute_deadline);
} }
void *grpc_channel_register_call(grpc_channel *channel, const char *method,
const char *host) {
registered_call *rc = gpr_malloc(sizeof(registered_call));
rc->path = grpc_mdelem_from_metadata_strings(
channel->metadata_context, grpc_mdstr_ref(channel->path_string),
grpc_mdstr_from_string(channel->metadata_context, method));
rc->authority = grpc_mdelem_from_metadata_strings(
channel->metadata_context, grpc_mdstr_ref(channel->authority_string),
grpc_mdstr_from_string(channel->metadata_context, host));
gpr_mu_lock(&channel->registered_call_mu);
rc->next = channel->registered_calls;
channel->registered_calls = rc;
gpr_mu_unlock(&channel->registered_call_mu);
return rc;
}
grpc_call *grpc_channel_create_registered_call(
grpc_channel *channel, grpc_completion_queue *completion_queue,
void *registered_call_handle, gpr_timespec deadline) {
registered_call *rc = registered_call_handle;
return grpc_channel_create_call_internal(
channel, completion_queue, grpc_mdelem_ref(rc->path),
grpc_mdelem_ref(rc->authority), deadline);
}
void grpc_channel_internal_ref(grpc_channel *channel) { void grpc_channel_internal_ref(grpc_channel *channel) {
gpr_ref(&channel->refs); gpr_ref(&channel->refs);
} }
@ -148,7 +189,15 @@ static void destroy_channel(void *p, int ok) {
grpc_mdstr_unref(channel->grpc_message_string); grpc_mdstr_unref(channel->grpc_message_string);
grpc_mdstr_unref(channel->path_string); grpc_mdstr_unref(channel->path_string);
grpc_mdstr_unref(channel->authority_string); grpc_mdstr_unref(channel->authority_string);
while (channel->registered_calls) {
registered_call *rc = channel->registered_calls;
channel->registered_calls = rc->next;
grpc_mdelem_unref(rc->path);
grpc_mdelem_unref(rc->authority);
gpr_free(rc);
}
grpc_mdctx_unref(channel->metadata_context); grpc_mdctx_unref(channel->metadata_context);
gpr_mu_destroy(&channel->registered_call_mu);
gpr_free(channel); gpr_free(channel);
} }

@ -61,12 +61,17 @@ Channel::~Channel() { grpc_channel_destroy(c_channel_); }
Call Channel::CreateCall(const RpcMethod& method, ClientContext* context, Call Channel::CreateCall(const RpcMethod& method, ClientContext* context,
CompletionQueue* cq) { CompletionQueue* cq) {
auto c_call = grpc_channel_create_call(c_channel_, cq->cq(), method.name(), auto c_call =
method.channel_tag()
? grpc_channel_create_registered_call(c_channel_, cq->cq(),
method.channel_tag(),
context->RawDeadline())
: grpc_channel_create_call(c_channel_, cq->cq(), method.name(),
context->authority().empty() context->authority().empty()
? target_.c_str() ? target_.c_str()
: context->authority().c_str(), : context->authority().c_str(),
context->RawDeadline()); context->RawDeadline());
GRPC_TIMER_MARK(CALL_CREATED,c_call); GRPC_TIMER_MARK(CALL_CREATED, c_call);
context->set_call(c_call); context->set_call(c_call);
return Call(c_call, this, cq); return Call(c_call, this, cq);
} }
@ -82,4 +87,8 @@ void Channel::PerformOpsOnCall(CallOpBuffer* buf, Call* call) {
GRPC_TIMER_MARK(PERFORM_OPS_END, call->call()); GRPC_TIMER_MARK(PERFORM_OPS_END, call->call());
} }
void* Channel::RegisterMethod(const char* method) {
return grpc_channel_register_call(c_channel_, method, target_.c_str());
}
} // namespace grpc } // namespace grpc

@ -54,6 +54,7 @@ class Channel GRPC_FINAL : public ChannelInterface {
Channel(const grpc::string& target, grpc_channel* c_channel); Channel(const grpc::string& target, grpc_channel* c_channel);
~Channel() GRPC_OVERRIDE; ~Channel() GRPC_OVERRIDE;
virtual void *RegisterMethod(const char *method) GRPC_OVERRIDE;
virtual Call CreateCall(const RpcMethod& method, ClientContext* context, virtual Call CreateCall(const RpcMethod& method, ClientContext* context,
CompletionQueue* cq) GRPC_OVERRIDE; CompletionQueue* cq) GRPC_OVERRIDE;
virtual void PerformOpsOnCall(CallOpBuffer* ops, Call* call) GRPC_OVERRIDE; virtual void PerformOpsOnCall(CallOpBuffer* ops, Call* call) GRPC_OVERRIDE;

@ -39,13 +39,13 @@ namespace grpc {
// begin a call to a named method // begin a call to a named method
std::unique_ptr<GenericClientAsyncReaderWriter> GenericStub::Call( std::unique_ptr<GenericClientAsyncReaderWriter> GenericStub::Call(
ClientContext* context, const grpc::string& method, ClientContext* context, const grpc::string& method, CompletionQueue* cq,
CompletionQueue* cq, void* tag) { void* tag) {
return std::unique_ptr<GenericClientAsyncReaderWriter>( return std::unique_ptr<GenericClientAsyncReaderWriter>(
new GenericClientAsyncReaderWriter( new GenericClientAsyncReaderWriter(
channel_.get(), cq, RpcMethod(method.c_str()), context, tag)); channel_.get(), cq,
RpcMethod(method.c_str(), RpcMethod::BIDI_STREAMING, nullptr),
context, tag));
} }
} // namespace grpc } // namespace grpc

@ -69,6 +69,7 @@ END2END_TESTS = [
'request_with_payload', 'request_with_payload',
'simple_delayed_request', 'simple_delayed_request',
'simple_request', 'simple_request',
'registered_call',
'thread_stress', 'thread_stress',
'writes_done_hangs_with_pending_read', 'writes_done_hangs_with_pending_read',

@ -0,0 +1,222 @@
/*
*
* Copyright 2015, 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 "test/core/end2end/end2end_tests.h"
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include "src/core/support/string.h"
#include <grpc/byte_buffer.h>
#include <grpc/grpc.h>
#include <grpc/support/alloc.h>
#include <grpc/support/log.h>
#include <grpc/support/time.h>
#include <grpc/support/useful.h>
#include "test/core/end2end/cq_verifier.h"
enum { TIMEOUT = 200000 };
static void *tag(gpr_intptr t) { return (void *)t; }
static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
const char *test_name,
grpc_channel_args *client_args,
grpc_channel_args *server_args) {
grpc_end2end_test_fixture f;
gpr_log(GPR_INFO, "%s/%s", test_name, config.name);
f = config.create_fixture(client_args, server_args);
config.init_client(&f, client_args);
config.init_server(&f, server_args);
return f;
}
static gpr_timespec n_seconds_time(int n) {
return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
}
static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
static void drain_cq(grpc_completion_queue *cq) {
grpc_event *ev;
grpc_completion_type type;
do {
ev = grpc_completion_queue_next(cq, five_seconds_time());
GPR_ASSERT(ev);
type = ev->type;
grpc_event_finish(ev);
} while (type != GRPC_QUEUE_SHUTDOWN);
}
static void shutdown_server(grpc_end2end_test_fixture *f) {
if (!f->server) return;
grpc_server_shutdown(f->server);
grpc_server_destroy(f->server);
f->server = NULL;
}
static void shutdown_client(grpc_end2end_test_fixture *f) {
if (!f->client) return;
grpc_channel_destroy(f->client);
f->client = NULL;
}
static void end_test(grpc_end2end_test_fixture *f) {
shutdown_server(f);
shutdown_client(f);
grpc_completion_queue_shutdown(f->server_cq);
drain_cq(f->server_cq);
grpc_completion_queue_destroy(f->server_cq);
grpc_completion_queue_shutdown(f->client_cq);
drain_cq(f->client_cq);
grpc_completion_queue_destroy(f->client_cq);
}
static void simple_request_body(grpc_end2end_test_fixture f, void *rc) {
grpc_call *c;
grpc_call *s;
gpr_timespec deadline = five_seconds_time();
cq_verifier *v_client = cq_verifier_create(f.client_cq);
cq_verifier *v_server = cq_verifier_create(f.server_cq);
grpc_op ops[6];
grpc_op *op;
grpc_metadata_array initial_metadata_recv;
grpc_metadata_array trailing_metadata_recv;
grpc_metadata_array request_metadata_recv;
grpc_call_details call_details;
grpc_status_code status;
char *details = NULL;
size_t details_capacity = 0;
int was_cancelled = 2;
c = grpc_channel_create_registered_call(f.client, f.client_cq, rc, deadline);
GPR_ASSERT(c);
grpc_metadata_array_init(&initial_metadata_recv);
grpc_metadata_array_init(&trailing_metadata_recv);
grpc_metadata_array_init(&request_metadata_recv);
grpc_call_details_init(&call_details);
op = ops;
op->op = GRPC_OP_SEND_INITIAL_METADATA;
op->data.send_initial_metadata.count = 0;
op++;
op->op = GRPC_OP_SEND_CLOSE_FROM_CLIENT;
op++;
op->op = GRPC_OP_RECV_INITIAL_METADATA;
op->data.recv_initial_metadata = &initial_metadata_recv;
op++;
op->op = GRPC_OP_RECV_STATUS_ON_CLIENT;
op->data.recv_status_on_client.trailing_metadata = &trailing_metadata_recv;
op->data.recv_status_on_client.status = &status;
op->data.recv_status_on_client.status_details = &details;
op->data.recv_status_on_client.status_details_capacity = &details_capacity;
op++;
GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(c, ops, op - ops, tag(1)));
GPR_ASSERT(GRPC_CALL_OK == grpc_server_request_call(f.server, &s,
&call_details,
&request_metadata_recv,
f.server_cq, tag(101)));
cq_expect_completion(v_server, tag(101), GRPC_OP_OK);
cq_verify(v_server);
op = ops;
op->op = GRPC_OP_SEND_INITIAL_METADATA;
op->data.send_initial_metadata.count = 0;
op++;
op->op = GRPC_OP_SEND_STATUS_FROM_SERVER;
op->data.send_status_from_server.trailing_metadata_count = 0;
op->data.send_status_from_server.status = GRPC_STATUS_UNIMPLEMENTED;
op->data.send_status_from_server.status_details = "xyz";
op++;
op->op = GRPC_OP_RECV_CLOSE_ON_SERVER;
op->data.recv_close_on_server.cancelled = &was_cancelled;
op++;
GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(s, ops, op - ops, tag(102)));
cq_expect_completion(v_server, tag(102), GRPC_OP_OK);
cq_verify(v_server);
cq_expect_completion(v_client, tag(1), GRPC_OP_OK);
cq_verify(v_client);
GPR_ASSERT(status == GRPC_STATUS_UNIMPLEMENTED);
GPR_ASSERT(0 == strcmp(details, "xyz"));
GPR_ASSERT(0 == strcmp(call_details.method, "/foo"));
GPR_ASSERT(0 == strcmp(call_details.host, "foo.test.google.fr:1234"));
GPR_ASSERT(was_cancelled == 0);
gpr_free(details);
grpc_metadata_array_destroy(&initial_metadata_recv);
grpc_metadata_array_destroy(&trailing_metadata_recv);
grpc_metadata_array_destroy(&request_metadata_recv);
grpc_call_details_destroy(&call_details);
grpc_call_destroy(c);
grpc_call_destroy(s);
cq_verifier_destroy(v_client);
cq_verifier_destroy(v_server);
}
static void test_invoke_simple_request(grpc_end2end_test_config config) {
grpc_end2end_test_fixture f = begin_test(config, __FUNCTION__, NULL, NULL);
void *rc =
grpc_channel_register_call(f.client, "/foo", "foo.test.google.fr:1234");
simple_request_body(f, rc);
end_test(&f);
config.tear_down_data(&f);
}
static void test_invoke_10_simple_requests(grpc_end2end_test_config config) {
int i;
grpc_end2end_test_fixture f = begin_test(config, __FUNCTION__, NULL, NULL);
void *rc =
grpc_channel_register_call(f.client, "/foo", "foo.test.google.fr:1234");
for (i = 0; i < 10; i++) {
simple_request_body(f, rc);
gpr_log(GPR_INFO, "Passed simple request %d", i);
}
end_test(&f);
config.tear_down_data(&f);
}
void grpc_end2end_tests(grpc_end2end_test_config config) {
test_invoke_simple_request(config);
test_invoke_10_simple_requests(config);
}

@ -918,6 +918,15 @@
"posix" "posix"
] ]
}, },
{
"flaky": false,
"language": "c",
"name": "chttp2_fake_security_registered_call_test",
"platforms": [
"windows",
"posix"
]
},
{ {
"flaky": false, "flaky": false,
"language": "c", "language": "c",
@ -1359,6 +1368,15 @@
"posix" "posix"
] ]
}, },
{
"flaky": false,
"language": "c",
"name": "chttp2_fullstack_registered_call_test",
"platforms": [
"windows",
"posix"
]
},
{ {
"flaky": false, "flaky": false,
"language": "c", "language": "c",
@ -1800,6 +1818,15 @@
"posix" "posix"
] ]
}, },
{
"flaky": false,
"language": "c",
"name": "chttp2_fullstack_uds_registered_call_test",
"platforms": [
"windows",
"posix"
]
},
{ {
"flaky": false, "flaky": false,
"language": "c", "language": "c",
@ -2241,6 +2268,15 @@
"posix" "posix"
] ]
}, },
{
"flaky": false,
"language": "c",
"name": "chttp2_simple_ssl_fullstack_registered_call_test",
"platforms": [
"windows",
"posix"
]
},
{ {
"flaky": false, "flaky": false,
"language": "c", "language": "c",
@ -2682,6 +2718,15 @@
"posix" "posix"
] ]
}, },
{
"flaky": false,
"language": "c",
"name": "chttp2_simple_ssl_with_oauth2_fullstack_registered_call_test",
"platforms": [
"windows",
"posix"
]
},
{ {
"flaky": false, "flaky": false,
"language": "c", "language": "c",
@ -3123,6 +3168,15 @@
"posix" "posix"
] ]
}, },
{
"flaky": false,
"language": "c",
"name": "chttp2_socket_pair_registered_call_test",
"platforms": [
"windows",
"posix"
]
},
{ {
"flaky": false, "flaky": false,
"language": "c", "language": "c",
@ -3564,6 +3618,15 @@
"posix" "posix"
] ]
}, },
{
"flaky": false,
"language": "c",
"name": "chttp2_socket_pair_one_byte_at_a_time_registered_call_test",
"platforms": [
"windows",
"posix"
]
},
{ {
"flaky": false, "flaky": false,
"language": "c", "language": "c",

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