Module: Sinlog::LogLambdaExt

Defined in:
lib/lambda.rb

Overview

Module to simplify logger calls using lambda expressions.

The following methods define lambda expressions for different log levels. These lambdas can be used to log messages at the corresponding log level.

Constant Summary collapse

@@_sinlog_lambda_ext_logger_ = 
Sinlog.instance.logger

Instance Method Summary collapse

Instance Method Details

#log_dbg ⇒ Object

Debug Logging

Example:

require 'sinlog'
include Sinlog::LogLambdaExt

'Debug Message'.then(&log_dbg)

cmd = %w[ls -l -h]
"cmd_arr: #{cmd}".tap(&log_dbg)



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# File 'lib/lambda.rb', line 24

def log_dbg
  ->(msg) { @@_sinlog_lambda_ext_logger_.debug(msg) }
end

#log_err ⇒ Object

Error Logging

Example:

'CLI error: You should pass the --url'.then(&log_err)



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# File 'lib/lambda.rb', line 71

def log_err
  ->(msg) { @@_sinlog_lambda_ext_logger_.error(msg) }
end

#log_fatal ⇒ Object

Fatal error logging

Example:

'Failed to open xxx'.then(&log_fatal)



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# File 'lib/lambda.rb', line 80

def log_fatal
  ->(msg) { @@_sinlog_lambda_ext_logger_.fatal(msg) }
end

#log_info ⇒ Object

Info(a.k.a. Information) Logging

Example:

require 'pathname'

Pathname('lib/lambda.rb').tap {
    "Filename: #{it}".then(&log_info)
    "size: #{it.size}".then(&log_info)
}



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# File 'lib/lambda.rb', line 38

def log_info
  ->(msg) { @@_sinlog_lambda_ext_logger_.info(msg) }
end

#log_unk ⇒ Object

Example:

'Unknown'.then(&log_unk)



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# File 'lib/lambda.rb', line 87

def log_unk
  ->(msg) { @@_sinlog_lambda_ext_logger_.unknown(msg) }
end

#log_warn ⇒ Object

Warning Logging

Example:

arr = (0..256).to_a
'This array is too large'.then(&log_warn) if arr.length > 128



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# File 'lib/lambda.rb', line 48

def log_warn
  ->(msg) { @@_sinlog_lambda_ext_logger_.warn(msg) }
end

#log_warning ⇒ Object

Warning Logging

Same as ‘log_warn`



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# File 'lib/lambda.rb', line 55

def log_warning
  ->(msg) { @@_sinlog_lambda_ext_logger_.warn(msg) }
end

#log_wng ⇒ Object

Warning Logging

Same as ‘log_warn`



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# File 'lib/lambda.rb', line 62

def log_wng
  ->(msg) { @@_sinlog_lambda_ext_logger_.warn(msg) }
end