Class: SpiderGazelle::Logger

Inherits:
Object
  • Object
show all
Includes:
Singleton
Defined in:
lib/spider-gazelle/logger.rb

Constant Summary collapse

LEVEL = 
{
    debug: 0,
    info: 1,
    warn: 2,
    error: 3,
    fatal: 4
}.freeze
DEFAULT_LEVEL = 
1
LEVELS = 
LEVEL.keys.freeze

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Logger

Returns a new instance of Logger.



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# File 'lib/spider-gazelle/logger.rb', line 23

def initialize
    @thread = ::Libuv::Reactor.default
    @level = DEFAULT_LEVEL
end

Instance Attribute Details

#formatter ⇒ Object

Returns the value of attribute formatter.



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# File 'lib/spider-gazelle/logger.rb', line 9

def formatter
  @formatter
end

#level ⇒ Object

Returns the value of attribute level.



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# File 'lib/spider-gazelle/logger.rb', line 8

def level
  @level
end

#thread ⇒ Object (readonly)

Returns the value of attribute thread.



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# File 'lib/spider-gazelle/logger.rb', line 8

def thread
  @thread
end

Class Method Details

.log(data) ⇒ Object 



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# File 'lib/spider-gazelle/logger.rb', line 29

def self.log(data)
    STDOUT.write data
end

Instance Method Details

#debug(msg = nil) ⇒ Object 



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# File 'lib/spider-gazelle/logger.rb', line 41

def debug(msg = nil)
    if @level <= 0
        msg = yield if block_given?
        log(:debug, msg)
    end
end

#error(msg = nil) ⇒ Object 



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# File 'lib/spider-gazelle/logger.rb', line 62

def error(msg = nil)
    if @level <= 3
        msg = yield if block_given?
        log(:error, msg)
    end
end

#fatal(msg = nil) ⇒ Object 



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# File 'lib/spider-gazelle/logger.rb', line 69

def fatal(msg = nil)
    if @level <= 4
        msg = yield if block_given?
        log(:fatal, msg)
    end
end

#info(msg = nil) ⇒ Object 



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# File 'lib/spider-gazelle/logger.rb', line 48

def info(msg = nil)
    if @level <= 1
        msg = yield if block_given?
        log(:info, msg)
    end
end

#print_error(e, msg = nil, trace = nil) ⇒ Object 



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# File 'lib/spider-gazelle/logger.rb', line 87

def print_error(e, msg = nil, trace = nil)
    message = String.new(msg || e.message)
    message << "\n#{e.message}" if msg
    message << "\n#{e.backtrace.join("\n")}" if e.respond_to?(:backtrace) && e.backtrace
    message << "\nCaller backtrace:\n#{trace.join("\n")}" if trace
    error(message)
end

#verbose(msg = nil) ⇒ Object 



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# File 'lib/spider-gazelle/logger.rb', line 76

def verbose(msg = nil)
    if @verbose
        msg = yield if block_given?
        STDOUT.write ">> #{msg}\n"
    end
end

#verbose!(enabled = true) ⇒ Object 



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# File 'lib/spider-gazelle/logger.rb', line 37

def verbose!(enabled = true)
    @verbose = enabled
end

#warn(msg = nil) ⇒ Object 



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# File 'lib/spider-gazelle/logger.rb', line 55

def warn(msg = nil)
    if @level <= 2
        msg = yield if block_given?
        log(:warn, msg)
    end
end

#write(msg) ⇒ Object 



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# File 'lib/spider-gazelle/logger.rb', line 83

def write(msg)
    STDOUT.write msg
end