diff options
| -rw-r--r-- | core/loggingmanager.lua | 157 |
1 files changed, 136 insertions, 21 deletions
diff --git a/core/loggingmanager.lua b/core/loggingmanager.lua index 973edbf4..bf800020 100644 --- a/core/loggingmanager.lua +++ b/core/loggingmanager.lua @@ -9,41 +9,156 @@ local math_max = math.max; local logger = require "util.logger"; -- Global log function, because some people are too --- lazy to get their own +-- lazy to get their own... _G.log = logger.init("general"); --- Disable log output, needs to read from config --- logger.setwriter(function () end); +local log_sink_types = {}; +local get_levels; -local getstyle, getstring = require "util.termcolours".getstyle, require "util.termcolours".getstring; -local do_pretty_printing = not os.getenv("WINDIR"); +--- Main function to read config, create the appropriate sinks and tell logger module +function setup_logging(log) + log = log or config.get("*", "core", "log") or default_logging; + -- Set default logger + if type(log) == "string" then + if not log:match("^%*") then + end + elseif type(log) == "table" then + -- Advanced configuration chosen + for i, sink_config in ipairs(log) do + local sink_maker = log_sink_types[sink_config.to]; + if sink_maker then + if sink_config.levels and not sink_config.source then + -- Create sink + local sink = sink_maker(sink_config); + + -- Set sink for all chosen levels + for level in pairs(get_levels(sink_config.levels)) do + logger.add_level_sink(level, sink); + end + elseif sink_config.source and not sink_config.levels then + logger.add_name_sink(sink_config.source, sink_maker(sink_config)); + elseif sink_config.source and sink_config.levels then + local levels = get_levels(sink_config.levels); + local sink = sink_maker(sink_config); + logger.add_name_sink(sink_config.source, + function (name, level, ...) + if levels[level] then + return sink(name, level, ...); + end + end); + else + -- All sources + end + else + -- No such sink type + end + end + end +end -local logstyles = {}; +--- Definition of built-in logging sinks --- +local math_max, rep = math.max, string.rep; + +-- Column width for "source" (used by stdout and console) ---TODO: This should be done in config, but we don't have proper config yet -if do_pretty_printing then - logstyles["info"] = getstyle("bold"); - logstyles["warn"] = getstyle("bold", "yellow"); - logstyles["error"] = getstyle("bold", "red"); +function log_sink_types.nowhere() + return function () return false; end; end local sourcewidth = 20; -local math_max, rep = math.max, string.rep; -local function make_default_log_sink(level) - return function (name, _level, message, ...) + +function log_sink_types.stdout() + return function (name, level, message, ...) sourcewidth = math_max(#name+2, sourcewidth); local namelen = #name; if ... then - io_write(name, rep(" ", sourcewidth-namelen), getstring(logstyles[level], level), "\t", format(message, ...), "\n"); + io_write(name, rep(" ", sourcewidth-namelen), level, "\t", format(message, ...), "\n"); else - io_write(name, rep(" ", sourcewidth-namelen), getstring(logstyles[level], level), "\t", message, "\n"); + io_write(name, rep(" ", sourcewidth-namelen), level, "\t", message, "\n"); end + end +end + +do + local getstyle, getstring = require "util.termcolours".getstyle, require "util.termcolours".getstring; + local do_pretty_printing = not os.getenv("WINDIR"); + + local logstyles = {}; + if do_pretty_printing then + logstyles["info"] = getstyle("bold"); + logstyles["warn"] = getstyle("bold", "yellow"); + logstyles["error"] = getstyle("bold", "red"); + end + function log_sink_types.console(config) + -- Really if we don't want pretty colours then just use plain stdout + if not do_pretty_printing then + return log_sink_types.stdout(config); + end + + return function (name, level, message, ...) + sourcewidth = math_max(#name+2, sourcewidth); + local namelen = #name; + if ... then + io_write(name, rep(" ", sourcewidth-namelen), getstring(logstyles[level], level), "\t", format(message, ...), "\n"); + else + io_write(name, rep(" ", sourcewidth-namelen), getstring(logstyles[level], level), "\t", message, "\n"); + end + end + end +end + +function log_sink_types.file(config) + local log = config.filename; + local logfile = io.open(log, "a+"); + if not logfile then + return function () end + end + + local write, format, flush = logfile.write, string.format, logfile.flush; + return function (name, level, message, ...) + if ... then + write(logfile, name, "\t", level, "\t", format(message, ...), "\n"); + else + write(logfile, name, "\t" , level, "\t", message, "\n"); + end + flush(logfile); + end; +end + +function log_sink_types.syslog() +end + +--- Helper function to get a set of levels given a "criteria" table +local logging_levels = { "debug", "info", "warn", "error", "critical" } + +function get_levels(criteria, set) + set = set or {}; + if type(criteria) == "string" then + set[criteria] = true; + return set; + end + local min, max = criteria.min, criteria.max; + if min or max then + local in_range; + for _, level in ipairs(logging_levels) do + if min == level then + set[level] = true; + in_range = true; + elseif max == level then + set[level] = true; + return set; + elseif in_range then + set[level] = true; + end + end + end + + for _, level in ipairs(criteria) do + set[level] = true; end + return set; end --- Set default sinks -logger.add_level_sink("debug", make_default_log_sink("debug")); -logger.add_level_sink("info", make_default_log_sink("info")); -logger.add_level_sink("warn", make_default_log_sink("warn")); -logger.add_level_sink("error", make_default_log_sink("error")); +--- Set up logging +setup_logging(); |