1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
|
/*
*
* Copyright 2017 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 <grpc/support/log.h>
#include "src/core/lib/compression/stream_compression.h"
#include "src/core/lib/compression/stream_compression_gzip.h"
extern "C" const grpc_stream_compression_vtable
grpc_stream_compression_identity_vtable;
bool grpc_stream_compress(grpc_stream_compression_context *ctx,
grpc_slice_buffer *in, grpc_slice_buffer *out,
size_t *output_size, size_t max_output_size,
grpc_stream_compression_flush flush) {
return ctx->vtable->compress(ctx, in, out, output_size, max_output_size,
flush);
}
bool grpc_stream_decompress(grpc_stream_compression_context *ctx,
grpc_slice_buffer *in, grpc_slice_buffer *out,
size_t *output_size, size_t max_output_size,
bool *end_of_context) {
return ctx->vtable->decompress(ctx, in, out, output_size, max_output_size,
end_of_context);
}
grpc_stream_compression_context *grpc_stream_compression_context_create(
grpc_stream_compression_method method) {
switch (method) {
case GRPC_STREAM_COMPRESSION_IDENTITY_COMPRESS:
case GRPC_STREAM_COMPRESSION_IDENTITY_DECOMPRESS:
return grpc_stream_compression_identity_vtable.context_create(method);
case GRPC_STREAM_COMPRESSION_GZIP_COMPRESS:
case GRPC_STREAM_COMPRESSION_GZIP_DECOMPRESS:
return grpc_stream_compression_gzip_vtable.context_create(method);
default:
gpr_log(GPR_ERROR, "Unknown stream compression method: %d", method);
return NULL;
}
}
void grpc_stream_compression_context_destroy(
grpc_stream_compression_context *ctx) {
ctx->vtable->context_destroy(ctx);
}
int grpc_stream_compression_method_parse(
grpc_slice value, bool is_compress,
grpc_stream_compression_method *method) {
if (grpc_slice_eq(value, GRPC_MDSTR_IDENTITY)) {
*method = is_compress ? GRPC_STREAM_COMPRESSION_IDENTITY_COMPRESS
: GRPC_STREAM_COMPRESSION_IDENTITY_DECOMPRESS;
return 1;
} else if (grpc_slice_eq(value, GRPC_MDSTR_GZIP)) {
*method = is_compress ? GRPC_STREAM_COMPRESSION_GZIP_COMPRESS
: GRPC_STREAM_COMPRESSION_GZIP_DECOMPRESS;
return 1;
} else {
return 0;
}
}
|
