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byte_buffer.h
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1 /*
2 *
3 * Copyright 2015, Google Inc.
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are
8 * met:
9 *
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11 * notice, this list of conditions and the following disclaimer.
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13 * copyright notice, this list of conditions and the following disclaimer
14 * in the documentation and/or other materials provided with the
15 * distribution.
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17 * contributors may be used to endorse or promote products derived from
18 * this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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32 */
33
34 #ifndef GRPCXX_BYTE_BUFFER_H
35 #define GRPCXX_BYTE_BUFFER_H
36
37 #include <grpc/grpc.h>
38 #include <grpc/byte_buffer.h>
39 #include <grpc/support/log.h>
40 #include <grpc++/config.h>
41 #include <grpc++/slice.h>
42 #include <grpc++/status.h>
43 #include <grpc++/impl/serialization_traits.h>
44
45 #include <vector>
46
47 namespace grpc {
48
49 class ByteBuffer GRPC_FINAL {
50 public:
51 ByteBuffer() : buffer_(nullptr) {}
52
53 ByteBuffer(const Slice* slices, size_t nslices);
54
55 ~ByteBuffer() {
56 if (buffer_) {
57 grpc_byte_buffer_destroy(buffer_);
58 }
59 }
60
61 void Dump(std::vector<Slice>* slices) const;
62
63 void Clear();
64 size_t Length() const;
65
66 private:
67 friend class SerializationTraits<ByteBuffer, void>;
68
69 ByteBuffer(const ByteBuffer&);
70 ByteBuffer& operator=(const ByteBuffer&);
71
72 // takes ownership
73 void set_buffer(grpc_byte_buffer* buf) {
74 if (buffer_) {
75 gpr_log(GPR_ERROR, "Overriding existing buffer");
76 Clear();
77 }
78 buffer_ = buf;
79 }
80
81 grpc_byte_buffer* buffer() const { return buffer_; }
82
83 grpc_byte_buffer* buffer_;
84 };
85
86 template <>
87 class SerializationTraits<ByteBuffer, void> {
88 public:
89 static Status Deserialize(grpc_byte_buffer* byte_buffer, ByteBuffer* dest,
90 int max_message_size) {
91 dest->set_buffer(byte_buffer);
92 return Status::OK;
93 }
94 static Status Serialize(const ByteBuffer& source, grpc_byte_buffer** buffer,
95 bool* own_buffer) {
96 *buffer = source.buffer();
97 *own_buffer = false;
98 return Status::OK;
99 }
100 };
101
102 } // namespace grpc
103
104 #endif // GRPCXX_BYTE_BUFFER_H
grpc::ByteBuffer::Clear
void Clear()
grpc::Slice
Definition: slice.h:42
config.h
serialization_traits.h
GRPC_FINAL
#define GRPC_FINAL
Definition: config.h:71
grpc::SerializationTraits< ByteBuffer, void >::Deserialize
static Status Deserialize(grpc_byte_buffer *byte_buffer, ByteBuffer *dest, int max_message_size)
Definition: byte_buffer.h:89
grpc::SerializationTraits
Defines how to serialize and deserialize some type.
Definition: serialization_traits.h:64
grpc::ByteBuffer::Length
size_t Length() const
grpc::ByteBuffer::Dump
void Dump(std::vector< Slice > *slices) const
status.h
slice.h
grpc::Status
Definition: status.h:42
grpc::ByteBuffer::~ByteBuffer
~ByteBuffer()
Definition: byte_buffer.h:55
grpc::SerializationTraits< ByteBuffer, void >::Serialize
static Status Serialize(const ByteBuffer &source, grpc_byte_buffer **buffer, bool *own_buffer)
Definition: byte_buffer.h:94
grpc::Status::OK
static const Status & OK
Definition: status.h:49
grpc::ByteBuffer::ByteBuffer
ByteBuffer()
Definition: byte_buffer.h:51
grpc::ByteBuffer
Definition: byte_buffer.h:49