mongo-ruby-driver/lib/mongo/util/logging.rb

56 lines
1.7 KiB
Ruby

module Mongo
module Logging
DEBUG_LEVEL = defined?(Logger) ? Logger::DEBUG : 0
def write_logging_startup_message
log(:debug, "Please note that logging negatively impacts client-side performance. " +
"You should set your logging level no lower than :info in production.")
end
# Log a message with the given level.
def log(level, msg)
return unless @logger
case level
when :fatal then
@logger.fatal "MONGODB [FATAL] #{msg}"
when :error then
@logger.error "MONGODB [ERROR] #{msg}"
when :warn then
@logger.warn "MONGODB [WARNING] #{msg}"
when :info then
@logger.info "MONGODB [INFO] #{msg}"
when :debug then
@logger.debug "MONGODB [DEBUG] #{msg}"
else
@logger.debug "MONGODB [DEBUG] #{msg}"
end
end
# Execute the block and log the operation described by name and payload.
def instrument(name, payload = {}, &blk)
start_time = Time.now
res = yield
if @logger && @logger.respond_to?("level") && (@logger.level == DEBUG_LEVEL)
log_operation(name, payload, start_time)
end
res
end
protected
def log_operation(name, payload, start_time)
msg = "MONGODB "
msg << "(#{((Time.now - start_time) * 1000).to_i}ms) "
msg << "#{payload[:database]}['#{payload[:collection]}'].#{name}("
msg << payload.values_at(:selector, :document, :documents, :fields ).compact.map(&:inspect).join(', ') + ")"
msg << ".skip(#{payload[:skip]})" if payload[:skip]
msg << ".limit(#{payload[:limit]})" if payload[:limit]
msg << ".sort(#{payload[:order]})" if payload[:order]
@logger.debug(msg)
end
end
end