+-- The log config used if none specified in the config file (see reload_logging for initialization)
+local default_logging;
+local default_file_logging;
+local default_timestamp = "%b %d %H:%M:%S ";
+-- The actual config loggingmanager is using
+local logging_config;
+
+local apply_sink_rules;
+local log_sink_types = setmetatable({}, { __newindex = function (t, k, v) rawset(t, k, v); apply_sink_rules(k); end; });
+local get_levels;
+local logging_levels = { "debug", "info", "warn", "error" }
+
+-- Put a rule into action. Requires that the sink type has already been registered.
+-- This function is called automatically when a new sink type is added [see apply_sink_rules()]
+local function add_rule(sink_config)
+ local sink_maker = log_sink_types[sink_config.to];
+ if not sink_maker then
+ return; -- No such sink type
+ end
+
+ -- Create sink
+ local sink = sink_maker(sink_config);
+
+ -- Set sink for all chosen levels
+ for level in pairs(get_levels(sink_config.levels or logging_levels)) do
+ logger.add_level_sink(level, sink);
+ end
+end
+
+-- Search for all rules using a particular sink type, and apply
+-- them. Called automatically when a new sink type is added to
+-- the log_sink_types table.
+function apply_sink_rules(sink_type)
+ if type(logging_config) == "table" then
+
+ for _, level in ipairs(logging_levels) do
+ if type(logging_config[level]) == "string" then
+ local value = logging_config[level];
+ if sink_type == "file" and not value:match("^%*") then
+ add_rule({
+ to = sink_type;
+ filename = value;
+ timestamps = true;
+ levels = { min = level };
+ });
+ elseif value == "*"..sink_type then
+ add_rule({
+ to = sink_type;
+ levels = { min = level };
+ });
+ end
+ end
+ end
+
+ for _, sink_config in ipairs(logging_config) do
+ if (type(sink_config) == "table" and sink_config.to == sink_type) then
+ add_rule(sink_config);
+ elseif (type(sink_config) == "string" and sink_config:match("^%*(.+)") == sink_type) then
+ add_rule({ levels = { min = "debug" }, to = sink_type });
+ end
+ end
+ elseif type(logging_config) == "string" and (not logging_config:match("^%*")) and sink_type == "file" then
+ -- User specified simply a filename, and the "file" sink type
+ -- was just added
+ for _, sink_config in pairs(default_file_logging) do
+ sink_config.filename = logging_config;
+ add_rule(sink_config);
+ sink_config.filename = nil;
+ end
+ elseif type(logging_config) == "string" and logging_config:match("^%*(.+)") == sink_type then
+ -- Log all levels (debug+) to this sink
+ add_rule({ levels = { min = "debug" }, to = sink_type });
+ end
+end
+
+
+
+--- Helper function to get a set of levels given a "criteria" table
+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
+
+-- Initialize config, etc. --
+local function reload_logging()
+ local old_sink_types = {};
+
+ for name, sink_maker in pairs(log_sink_types) do
+ old_sink_types[name] = sink_maker;
+ log_sink_types[name] = nil;
+ end
+
+ logger.reset();
+
+ local debug_mode = config.get("*", "debug");