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These may be redefined to customize log rotation path prefixes, including use of a directory. File extensions are still up to individual log writers to add themselves during the actual rotation. These new also allow for some simplication to the default ASCII postprocessor function: it eliminates the need for it doing an extra/awkward rename() operation that only changes the timestamp format. This also teaches the supervisor framework to use these new options to rotate ascii logs into a log-queue/ directory with a specific file name format (intended for an external archiver process to monitor separately).
88 lines
3.3 KiB
Text
88 lines
3.3 KiB
Text
##! Interface for the ASCII log writer. Redefinable options are available
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##! to tweak the output format of ASCII logs.
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##!
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##! The ASCII writer currently supports one writer-specific per-filter config
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##! option: setting ``tsv`` to the string ``T`` turns the output into
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##! "tab-separated-value" mode where only a single header row with the column
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##! names is printed out as meta information, with no "# fields" prepended; no
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##! other meta data gets included in that mode. Example filter using this::
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##!
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##! local f: Log::Filter = [$name = "my-filter",
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##! $writer = Log::WRITER_ASCII,
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##! $config = table(["tsv"] = "T")];
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##!
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module LogAscii;
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export {
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## If true, output everything to stdout rather than
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## into files. This is primarily for debugging purposes.
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##
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## This option is also available as a per-filter ``$config`` option.
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const output_to_stdout = F &redef;
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## If true, the default will be to write logs in a JSON format.
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##
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## This option is also available as a per-filter ``$config`` option.
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const use_json = F &redef;
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## If true, valid UTF-8 sequences will pass through unescaped and be
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## written into logs.
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##
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## This option is also available as a per-filter ``$config`` option.
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const enable_utf_8 = F &redef;
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## Define the gzip level to compress the logs. If 0, then no gzip
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## compression is performed. Enabling compression also changes
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## the log file name extension to include the value of
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## :zeek:see:`LogAscii::gzip_file_extension`.
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##
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## This option is also available as a per-filter ``$config`` option.
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const gzip_level = 0 &redef;
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## Define the file extension used when compressing log files when
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## they are created with the :zeek:see:`LogAscii::gzip_level` option.
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##
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## This option is also available as a per-filter ``$config`` option.
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const gzip_file_extension = "gz" &redef;
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## Format of timestamps when writing out JSON. By default, the JSON
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## formatter will use double values for timestamps which represent the
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## number of seconds from the UNIX epoch.
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##
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## This option is also available as a per-filter ``$config`` option.
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const json_timestamps: JSON::TimestampFormat = JSON::TS_EPOCH &redef;
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## If true, include lines with log meta information such as column names
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## with types, the values of ASCII logging options that are in use, and
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## the time when the file was opened and closed (the latter at the end).
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##
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## If writing in JSON format, this is implicitly disabled.
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const include_meta = T &redef;
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## Prefix for lines with meta information.
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##
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## This option is also available as a per-filter ``$config`` option.
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const meta_prefix = "#" &redef;
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## Separator between fields.
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##
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## This option is also available as a per-filter ``$config`` option.
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const separator = Log::separator &redef;
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## Separator between set elements.
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##
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## This option is also available as a per-filter ``$config`` option.
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const set_separator = Log::set_separator &redef;
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## String to use for empty fields. This should be different from
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## *unset_field* to make the output unambiguous.
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##
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## This option is also available as a per-filter ``$config`` option.
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const empty_field = Log::empty_field &redef;
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## String to use for an unset &optional field.
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##
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## This option is also available as a per-filter ``$config`` option.
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const unset_field = Log::unset_field &redef;
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}
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