77 lines
1.9 KiB
C
77 lines
1.9 KiB
C
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#ifndef AWS_COMMON_LOG_WRITER_H
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#define AWS_COMMON_LOG_WRITER_H
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/**
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* Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
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* SPDX-License-Identifier: Apache-2.0.
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*/
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#include <aws/common/common.h>
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AWS_PUSH_SANE_WARNING_LEVEL
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struct aws_allocator;
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struct aws_string;
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/*
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* Log writer interface and default implementation(s)
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*
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* A log writer functions as a sink for formatted log lines. We provide
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* default implementations that go to stdout, stderr, and a specified file.
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*/
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struct aws_log_writer;
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typedef int(aws_log_writer_write_fn)(struct aws_log_writer *writer, const struct aws_string *output);
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typedef void(aws_log_writer_clean_up_fn)(struct aws_log_writer *writer);
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struct aws_log_writer_vtable {
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aws_log_writer_write_fn *write;
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aws_log_writer_clean_up_fn *clean_up;
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};
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struct aws_log_writer {
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struct aws_log_writer_vtable *vtable;
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struct aws_allocator *allocator;
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void *impl;
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};
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struct aws_log_writer_file_options {
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const char *filename;
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FILE *file;
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};
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AWS_EXTERN_C_BEGIN
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/*
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* Initialize a log writer that sends log lines to stdout. Uses C library IO.
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*/
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AWS_COMMON_API
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int aws_log_writer_init_stdout(struct aws_log_writer *writer, struct aws_allocator *allocator);
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/*
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* Initialize a log writer that sends log lines to stderr. Uses C library IO.
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*/
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AWS_COMMON_API
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int aws_log_writer_init_stderr(struct aws_log_writer *writer, struct aws_allocator *allocator);
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/*
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* Initialize a log writer that sends log lines to a file. Uses C library IO.
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*/
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AWS_COMMON_API
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int aws_log_writer_init_file(
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struct aws_log_writer *writer,
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struct aws_allocator *allocator,
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struct aws_log_writer_file_options *options);
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/*
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* Frees all resources used by a log writer with the exception of the base structure memory
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*/
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AWS_COMMON_API
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void aws_log_writer_clean_up(struct aws_log_writer *writer);
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AWS_EXTERN_C_END
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AWS_POP_SANE_WARNING_LEVEL
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#endif /* AWS_COMMON_LOG_WRITER_H */
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