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Diffstat (limited to 'src/core/lib/channel/channel_args.h')
| -rw-r--r-- | src/core/lib/channel/channel_args.h | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/src/core/lib/channel/channel_args.h b/src/core/lib/channel/channel_args.h new file mode 100644 index 0000000000..1ea202c543 --- /dev/null +++ b/src/core/lib/channel/channel_args.h @@ -0,0 +1,94 @@ +/* + * + * Copyright 2015-2016, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#ifndef GRPC_CORE_LIB_CHANNEL_CHANNEL_ARGS_H +#define GRPC_CORE_LIB_CHANNEL_CHANNEL_ARGS_H + +#include <grpc/compression.h> +#include <grpc/grpc.h> + +/** 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); + +/** Concatenate args from \a a and \a b into a new instance */ +grpc_channel_args *grpc_channel_args_merge(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_channel_args *a); + +/** Reads census_enabled settings from channel args. Returns 1 if census_enabled + * is specified in channel args, otherwise returns 0. */ +int grpc_channel_args_is_census_enabled(const 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 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); + +/** 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_channel_args **a, grpc_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. */ +int grpc_channel_args_compression_algorithm_get_states( + const grpc_channel_args *a); + +int grpc_channel_args_compare(const grpc_channel_args *a, + const grpc_channel_args *b); + +#endif /* GRPC_CORE_LIB_CHANNEL_CHANNEL_ARGS_H */ |