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