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- /*
- Copyright (c) 2020 Sogou, Inc.
- 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.
- */
- #ifndef __RPC_MESSAGE_BRPC_H__
- #define __RPC_MESSAGE_BRPC_H__
- #ifdef _WIN32
- #include <workflow/PlatformSocket.h>
- #else
- #include <arpa/inet.h>
- #endif
- #include "rpc_message.h"
- #include "rpc_basic.h"
- namespace srpc
- {
- static constexpr int BRPC_HEADER_SIZE = 12;
- class BRPCMessage : public RPCMessage
- {
- public:
- BRPCMessage();
- virtual ~BRPCMessage();
- int encode(struct iovec vectors[], int max, size_t size_limit);
- int append(const void *buf, size_t *size, size_t size_limit);
- int get_compress_type() const override;
- void set_compress_type(int type) override;
- bool get_attachment_nocopy(const char **attachment, size_t *len) const;
- void set_attachment_nocopy(const char *attachment, size_t len);
- int get_data_type() const override { return RPCDataProtobuf; }
- void set_data_type(int type) override { }
- //Different data type is not supported in BrpcMeta.
- bool get_meta_module_data(RPCModuleData& data) const override { return false; }
- bool set_meta_module_data(const RPCModuleData& data) override { return false; }
- public:
- using RPCMessage::serialize;
- using RPCMessage::deserialize;
- int serialize(const ProtobufIDLMessage *pb_msg) override;
- int deserialize(ProtobufIDLMessage *pb_msg) override;
- int compress() override;
- int decompress() override;
- protected:
- // "PRPC" + PAYLOAD_SIZE + META_SIZE
- char header[BRPC_HEADER_SIZE];
- size_t nreceived;
- size_t meta_len;
- size_t message_len;
- size_t attachment_len;
- char *meta_buf;
- RPCBuffer *message;
- RPCBuffer *attachment;
- ProtobufIDLMessage *meta;
- protected:
- int error_code_srpc_brpc(int srpc_status_code) const;
- int error_code_brpc_srpc(int brpc_error_code) const;
- };
- class BRPCRequest : public BRPCMessage
- {
- public:
- bool serialize_meta();
- bool deserialize_meta();
- const std::string& get_service_name() const;
- const std::string& get_method_name() const;
- void set_service_name(const std::string& service_name);
- void set_method_name(const std::string& method_name);
- int64_t get_correlation_id() const;
- };
- class BRPCResponse : public BRPCMessage
- {
- public:
- bool serialize_meta();
- bool deserialize_meta();
- int get_status_code() const;
- int get_error() const;
- const char *get_errmsg() const;
- void set_status_code(int code);
- void set_error(int error);
- void set_correlation_id(int64_t cid);
- protected:
- int srpc_status_code = RPCStatusOK;
- std::string srpc_error_msg;
- };
- class BRPCStdRequest : public protocol::ProtocolMessage, public RPCRequest, public BRPCRequest
- {
- public:
- int encode(struct iovec vectors[], int max) override
- {
- return this->BRPCRequest::encode(vectors, max, this->size_limit);
- }
- int append(const void *buf, size_t *size) override
- {
- return this->BRPCRequest::append(buf, size, this->size_limit);
- }
- public:
- bool serialize_meta() override
- {
- return this->BRPCRequest::serialize_meta();
- }
- bool deserialize_meta() override
- {
- return this->BRPCRequest::deserialize_meta();
- }
- public:
- const std::string& get_service_name() const override
- {
- return this->BRPCRequest::get_service_name();
- }
- const std::string& get_method_name() const override
- {
- return this->BRPCRequest::get_method_name();
- }
- void set_service_name(const std::string& service_name) override
- {
- return this->BRPCRequest::set_service_name(service_name);
- }
- void set_method_name(const std::string& method_name) override
- {
- return this->BRPCRequest::set_method_name(method_name);
- }
- bool set_meta_module_data(const RPCModuleData& data) override
- {
- return this->BRPCMessage::set_meta_module_data(data);
- }
- bool get_meta_module_data(RPCModuleData& data) const override
- {
- return this->BRPCMessage::get_meta_module_data(data);
- }
- public:
- BRPCStdRequest() { this->size_limit = RPC_BODY_SIZE_LIMIT; }
- };
- class BRPCStdResponse : public protocol::ProtocolMessage, public RPCResponse, public BRPCResponse
- {
- public:
- int encode(struct iovec vectors[], int max) override
- {
- return this->BRPCResponse::encode(vectors, max, this->size_limit);
- }
- int append(const void *buf, size_t *size) override
- {
- return this->BRPCResponse::append(buf, size, this->size_limit);
- }
- public:
- bool serialize_meta() override
- {
- return this->BRPCResponse::serialize_meta();
- }
- bool deserialize_meta() override
- {
- return this->BRPCResponse::deserialize_meta();
- }
- public:
- int get_status_code() const override
- {
- return this->BRPCResponse::get_status_code();
- }
- int get_error() const override
- {
- return this->BRPCResponse::get_error();
- }
- const char *get_errmsg() const override
- {
- return this->BRPCResponse::get_errmsg();
- }
- void set_status_code(int code) override
- {
- return this->BRPCResponse::set_status_code(code);
- }
- void set_error(int error) override
- {
- return this->BRPCResponse::set_error(error);
- }
- bool set_meta_module_data(const RPCModuleData& data) override
- {
- return this->BRPCMessage::set_meta_module_data(data);
- }
- bool get_meta_module_data(RPCModuleData& data) const override
- {
- return this->BRPCMessage::get_meta_module_data(data);
- }
- public:
- BRPCStdResponse() { this->size_limit = RPC_BODY_SIZE_LIMIT; }
- };
- ////////
- // inl
- inline BRPCMessage::~BRPCMessage()
- {
- delete this->message;
- delete this->attachment;
- delete []this->meta_buf;
- delete this->meta;
- }
- inline int BRPCMessage::encode(struct iovec vectors[], int max, size_t size_limit)
- {
- size_t sz = this->meta_len + this->message_len + this->attachment_len;
- if (sz > 0x7FFFFFFF)
- {
- errno = EOVERFLOW;
- return -1;
- }
- int ret;
- int total;
- char *p = this->header;
- memcpy(p, "PRPC", 4);
- p += 4;
- *(uint32_t *)(p) = htonl((uint32_t)sz);
- p += 4;
- *(uint32_t *)(p) = htonl((uint32_t)this->meta_len);
- vectors[0].iov_base = this->header;
- vectors[0].iov_len = BRPC_HEADER_SIZE;
- vectors[1].iov_base = this->meta_buf;
- vectors[1].iov_len = this->meta_len;
- ret = this->message->encode(vectors + 2, max - 2);
- if (ret < 0)
- return ret;
- total = ret;
- if (this->attachment_len)
- {
- ret = this->attachment->encode(vectors + 2 + ret, max - 2 - ret);
- if (ret < 0)
- return ret;
- total += ret;
- }
- return 2 + total;
- }
- } // namespace srpc
- #endif
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