blob: f896053e4daed6a468a68de0710469dd56f63752 (
plain)
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
|
/*
*
* 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/port_platform.h>
#include "src/core/lib/transport/status_metadata.h"
#include "src/core/lib/slice/slice_string_helpers.h"
#include "src/core/lib/transport/static_metadata.h"
/* we offset status by a small amount when storing it into transport metadata
as metadata cannot store a 0 value (which is used as OK for grpc_status_codes
*/
#define STATUS_OFFSET 1
static void destroy_status(void* ignored) {}
grpc_status_code grpc_get_status_code_from_metadata(grpc_mdelem md) {
if (grpc_mdelem_eq(md, GRPC_MDELEM_GRPC_STATUS_0)) {
return GRPC_STATUS_OK;
}
if (grpc_mdelem_eq(md, GRPC_MDELEM_GRPC_STATUS_1)) {
return GRPC_STATUS_CANCELLED;
}
if (grpc_mdelem_eq(md, GRPC_MDELEM_GRPC_STATUS_2)) {
return GRPC_STATUS_UNKNOWN;
}
void* user_data = grpc_mdelem_get_user_data(md, destroy_status);
if (user_data != nullptr) {
return static_cast<grpc_status_code>((intptr_t)user_data - STATUS_OFFSET);
}
uint32_t status;
if (!grpc_parse_slice_to_uint32(GRPC_MDVALUE(md), &status)) {
status = GRPC_STATUS_UNKNOWN; /* could not parse status code */
}
grpc_mdelem_set_user_data(
md, destroy_status, (void*)static_cast<intptr_t>(status + STATUS_OFFSET));
return static_cast<grpc_status_code>(status);
}
|
