function init(queue)
	-- ast_verbose("**** QUEUE " .. queue.name)
end

function cleanup()
	-- ast_verbose("**** Cleanup ")
end

function enter_queue(entry,vars)
	-- ast_verbose("**** Enter queue")
	for key,value in pairs(vars) do
		_, _, skill_id = string.find(key, "^_*MDC_SKILL%-(%d+)$")
		if skill_id ~= nil then
			-- ast_verbose("Found skill " .. skill_id)
			ast_queue_log(entry.queuename,entry.uniqueid,"NONE","INFO","REQSKILL" .. "|" .. key .. "|".. value)
		end
	end
end

function calc_metric(member,entry,vars)

    -- lookup the skills table for this agent
    skillset = agent_skills[member.membername]

    score=0

    -- traverse required skills
    for key,value in pairs(vars) do
		_, _, skill_id = string.find(key, "^_*MDC_SKILL%-(%d+)$")
		if skill_id ~= nil then
			requiredlevel = tonumber(value)
			-- we can skip skills with a level of zero
			if requiredlevel > 0 then
				if skillset == nil then
					-- we require a skill but the agent does not have ANY skills,
					-- so skip this agent
					-- ast_verbose("Agent " .. member.membername .." has no skills")
					return -1
				end
				-- lookup required skill
				level = tonumber(skillset[key])
				if level == nil then
					-- Agent does not have the required skill
					-- so skip this agent
					-- ast_verbose("Agent " .. member.membername .." misses skill " .. key)
					return -1
				end
				if level<requiredlevel then
					-- Agents skill level is to low
					-- so skip this agent
					-- ast_verbose("Agent " .. member.membername .." skill " .. key .." level to low: " .. level .."<" ..requiredlevel)
					return -1
				end
				-- sum up score (if using score )
				score = score + level
			end
        end
	end
ast_verbose("Agent " .. member.membername .." has score " .. score)
    -- example for score calculation: negate score because lower value wins
	-- return 10000 - score

	-- zero means: consider this agent but use standard asterisk strategy for calling
end