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#ifndef AWS_COMMON_LOG_CHANNEL_H
#define AWS_COMMON_LOG_CHANNEL_H
/**
* Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0.
*/
#include <aws/common/common.h>
#include <aws/common/logging.h>
AWS_PUSH_SANE_WARNING_LEVEL
struct aws_string;
struct aws_log_writer;
/*
* Log channel interface and default implementations
*
* A log channel is an abstraction for the transfer of formatted log data between a source (formatter)
* and a sink (writer).
*/
struct aws_log_channel;
typedef int(aws_log_channel_send_fn)(struct aws_log_channel *channel, struct aws_string *output);
typedef void(aws_log_channel_clean_up_fn)(struct aws_log_channel *channel);
struct aws_log_channel_vtable {
aws_log_channel_send_fn *send;
aws_log_channel_clean_up_fn *clean_up;
};
struct aws_log_channel {
struct aws_log_channel_vtable *vtable;
struct aws_allocator *allocator;
struct aws_log_writer *writer;
void *impl;
};
AWS_EXTERN_C_BEGIN
/*
* Simple channel that results in log lines being written in the same thread they were generated in.
*
* The passed in log writer is not an ownership transfer. The log channel does not clean up the writer.
*/
AWS_COMMON_API
int aws_log_channel_init_foreground(
struct aws_log_channel *channel,
struct aws_allocator *allocator,
struct aws_log_writer *writer);
/*
* Simple channel that sends log lines to a background thread.
*
* The passed in log writer is not an ownership transfer. The log channel does not clean up the writer.
*/
AWS_COMMON_API
int aws_log_channel_init_background(
struct aws_log_channel *channel,
struct aws_allocator *allocator,
struct aws_log_writer *writer);
/*
* Channel cleanup function
*/
AWS_COMMON_API
void aws_log_channel_clean_up(struct aws_log_channel *channel);
AWS_EXTERN_C_END
AWS_POP_SANE_WARNING_LEVEL
#endif /* AWS_COMMON_LOG_CHANNEL_H */
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