Volt - A Variant of Bolt OCaml Logging Tool

Overview

This package provides a variant of Bolt OCaml logging tool called Volt. Volt offers the following features in addition to the original:

Pass filter concept. Each logger has an associated pass filter, which ensures that events will never be propagated to the ancestor loggers when the events do not satisfy the filter.
Extended implicit logging syntax.
log_expr ::= ...
| FATAL_MSG (string|ident) arguments attributes
| ERROR_MSG (string|ident) arguments attributes
| WARN_MSG (string|ident) arguments attributes
| INFO_MSG (string|ident) arguments attributes
| DEBUG_MSG (string|ident) arguments attributes
| TRACE_MSG (string|ident) arguments attributes
block_expr ::=
| BEGIN_FATAL expr_seq END_FATAL
| BEGIN_ERROR expr_seq END_ERROR
| BEGIN_WARN expr_seq END_WARN
| BEGIN_INFO expr_seq END_INFO
| BEGIN_DEBUG expr_seq END_DEBUG
| BEGIN_TRACE expr_seq END_TRACE
More informative default logger name. In addition to a capitalized source file name without suffix, surrounding module names, class names, or function names are used to compute a logger name when no NAME attribute is provided.
Suppression of unwanted evaluation of arguments. Arguments in the LOG and *_MSG expressions are not evaluated when the defined logger does not record events.
Additional keys for use by the pattern and csv layouts.
monthname - name of month e.g. January, February, ...
monthnm - abbreviated name of month e.g. Jan, Feb, ...

The development sources are available from GitHub.

As in the original version, this tool is free software released under the LGPL v3.

See INSTALL.