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
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
|
/*
*
* Copyright 2015 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.
*
*/
#ifndef GRPC_CORE_LIB_CHANNEL_CHANNEL_ARGS_H
#define GRPC_CORE_LIB_CHANNEL_CHANNEL_ARGS_H
#include <grpc/compression.h>
#include <grpc/grpc.h>
#include "src/core/lib/iomgr/socket_mutator.h"
// Channel args are intentionally immutable, to avoid the need for locking.
/** Copy the arguments in \a src into a new instance */
grpc_channel_args *grpc_channel_args_copy(const grpc_channel_args *src);
/** Copy the arguments in \a src into a new instance, stably sorting keys */
grpc_channel_args *grpc_channel_args_normalize(const grpc_channel_args *src);
/** Copy the arguments in \a src and append \a to_add. If \a to_add is NULL, it
* is equivalent to calling \a grpc_channel_args_copy. */
grpc_channel_args *grpc_channel_args_copy_and_add(const grpc_channel_args *src,
const grpc_arg *to_add,
size_t num_to_add);
/** Copies the arguments in \a src except for those whose keys are in
\a to_remove. */
grpc_channel_args *grpc_channel_args_copy_and_remove(
const grpc_channel_args *src, const char **to_remove, size_t num_to_remove);
/** Copies the arguments from \a src except for those whose keys are in
\a to_remove and appends the arguments in \a to_add. */
grpc_channel_args *grpc_channel_args_copy_and_add_and_remove(
const grpc_channel_args *src, const char **to_remove, size_t num_to_remove,
const grpc_arg *to_add, size_t num_to_add);
/** Perform the union of \a a and \a b, prioritizing \a a entries */
grpc_channel_args *grpc_channel_args_union(const grpc_channel_args *a,
const grpc_channel_args *b);
/** Destroy arguments created by \a grpc_channel_args_copy */
void grpc_channel_args_destroy(grpc_exec_ctx *exec_ctx, grpc_channel_args *a);
/** Returns the compression algorithm set in \a a. */
grpc_compression_algorithm grpc_channel_args_get_compression_algorithm(
const grpc_channel_args *a);
/** Returns the stream compression algorithm set in \a a. */
grpc_stream_compression_algorithm
grpc_channel_args_get_stream_compression_algorithm(const grpc_channel_args *a);
/** Returns a channel arg instance with compression enabled. If \a a is
* non-NULL, its args are copied. N.B. GRPC_COMPRESS_NONE disables compression
* for the channel. */
grpc_channel_args *grpc_channel_args_set_compression_algorithm(
grpc_channel_args *a, grpc_compression_algorithm algorithm);
/** Returns a channel arg instance with stream compression enabled. If \a a is
* non-NULL, its args are copied. N.B. GRPC_STREAM_COMPRESS_NONE disables
* stream compression for the channel. If a value other than
* GRPC_STREAM_COMPRESS_NONE is set, it takes precedence over message-wise
* compression algorithms. */
grpc_channel_args *grpc_channel_args_set_stream_compression_algorithm(
grpc_channel_args *a, grpc_stream_compression_algorithm algorithm);
/** Sets the support for the given compression algorithm. By default, all
* compression algorithms are enabled. It's an error to disable an algorithm set
* by grpc_channel_args_set_compression_algorithm.
*
* Returns an instance with the updated algorithm states. The \a a pointer is
* modified to point to the returned instance (which may be different from the
* input value of \a a). */
grpc_channel_args *grpc_channel_args_compression_algorithm_set_state(
grpc_exec_ctx *exec_ctx, grpc_channel_args **a,
grpc_compression_algorithm algorithm, int enabled);
/** Sets the support for the given stream compression algorithm. By default, all
* stream compression algorithms are enabled. It's an error to disable an
* algorithm set by grpc_channel_args_set_stream_compression_algorithm.
*
* Returns an instance with the updated algorithm states. The \a a pointer is
* modified to point to the returned instance (which may be different from the
* input value of \a a). */
grpc_channel_args *grpc_channel_args_stream_compression_algorithm_set_state(
grpc_exec_ctx *exec_ctx, grpc_channel_args **a,
grpc_stream_compression_algorithm algorithm, int enabled);
/** Returns the bitset representing the support state (true for enabled, false
* for disabled) for compression algorithms.
*
* The i-th bit of the returned bitset corresponds to the i-th entry in the
* grpc_compression_algorithm enum. */
uint32_t grpc_channel_args_compression_algorithm_get_states(
const grpc_channel_args *a);
/** Returns the bitset representing the support state (true for enabled, false
* for disabled) for stream compression algorithms.
*
* The i-th bit of the returned bitset corresponds to the i-th entry in the
* grpc_stream_compression_algorithm enum. */
uint32_t grpc_channel_args_stream_compression_algorithm_get_states(
const grpc_channel_args *a);
int grpc_channel_args_compare(const grpc_channel_args *a,
const grpc_channel_args *b);
/** Returns a channel arg instance with socket mutator added. The socket mutator
* will perform its mutate_fd method on all file descriptors used by the
* channel.
* If \a a is non-MULL, its args are copied. */
grpc_channel_args *grpc_channel_args_set_socket_mutator(
grpc_channel_args *a, grpc_socket_mutator *mutator);
/** Returns the value of argument \a name from \a args, or NULL if not found. */
const grpc_arg *grpc_channel_args_find(const grpc_channel_args *args,
const char *name);
bool grpc_channel_args_want_minimal_stack(const grpc_channel_args *args);
typedef struct grpc_integer_options {
int default_value; // Return this if value is outside of expected bounds.
int min_value;
int max_value;
} grpc_integer_options;
/** Returns the value of \a arg, subject to the contraints in \a options. */
int grpc_channel_arg_get_integer(const grpc_arg *arg,
const grpc_integer_options options);
bool grpc_channel_arg_get_bool(const grpc_arg *arg, bool default_value);
// Helpers for creating channel args.
grpc_arg grpc_channel_arg_string_create(char *name, char *value);
grpc_arg grpc_channel_arg_integer_create(char *name, int value);
grpc_arg grpc_channel_arg_pointer_create(char *name, void *value,
const grpc_arg_pointer_vtable *vtable);
#endif /* GRPC_CORE_LIB_CHANNEL_CHANNEL_ARGS_H */
|
