Class: Bridgetown::LogAdapter

Inherits:
Object
  • Object
show all
Defined in:
lib/bridgetown-core/log_adapter.rb

Constant Summary collapse

LOG_LEVELS = 
{
  debug: ::Logger::DEBUG,
  info: ::Logger::INFO,
  warn: ::Logger::WARN,
  error: ::Logger::ERROR,
}.freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(writer, level = :info) ⇒ LogAdapter

Public: Create a new instance of a log writer

writer - Logger compatible instance log_level - (optional, symbol) the log level

Returns nothing



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# File 'lib/bridgetown-core/log_adapter.rb', line 20

def initialize(writer, level = :info)
  @messages = []
  @writer = writer
  self.log_level = level
end

Instance Attribute Details

#level ⇒ Object (readonly)

Returns the value of attribute level.



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# File 'lib/bridgetown-core/log_adapter.rb', line 5

def level
  @level
end

#messages ⇒ Object (readonly)

Returns the value of attribute messages.



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# File 'lib/bridgetown-core/log_adapter.rb', line 5

def messages
  @messages
end

#writer ⇒ Object (readonly)

Returns the value of attribute writer.



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# File 'lib/bridgetown-core/log_adapter.rb', line 5

def writer
  @writer
end

Instance Method Details

#abort_with(topic, message = nil) ⇒ Object

Public: Print an error message and immediately abort the process

topic - the topic of the message, e.g. "Configuration file", "Deprecation", etc. message - the message detail (can be omitted)

Returns nothing



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# File 'lib/bridgetown-core/log_adapter.rb', line 94

def abort_with(topic, message = nil, &)
  error(topic, message, &)
  abort
end

#adjust_verbosity(options = {}) ⇒ Object 



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# File 'lib/bridgetown-core/log_adapter.rb', line 38

def adjust_verbosity(options = {})
  # Quiet always wins.
  if options[:quiet]
    self.log_level = :error
  elsif options[:verbose]
    self.log_level = :debug
  end
  debug "Logging at level:", LOG_LEVELS.key(writer.level).to_s
end

#debug(topic, message = nil) ⇒ Object

Public: Print a debug message

topic - the topic of the message, e.g. "Configuration file", "Deprecation", etc. message - the message detail

Returns nothing



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# File 'lib/bridgetown-core/log_adapter.rb', line 54

def debug(topic, message = nil, &)
  write(:debug, topic, message, &)
end

#error(topic, message = nil) ⇒ Object

Public: Print an error message

topic - the topic of the message, e.g. "Configuration file", "Deprecation", etc. message - the message detail

Returns nothing



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# File 'lib/bridgetown-core/log_adapter.rb', line 84

def error(topic, message = nil, &)
  write(:error, topic, message, &)
end

#formatted_topic(topic, colon = false) ⇒ Object

Internal: Format the topic

topic - the topic of the message, e.g. "Configuration file", "Deprecation", etc. colon -

Returns the formatted topic statement



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# File 'lib/bridgetown-core/log_adapter.rb', line 122

def formatted_topic(topic, colon = false) # rubocop:disable Style/OptionalBooleanParameter
  "#{topic}#{colon ? ": " : " "}".rjust(20)
end

#info(topic, message = nil) ⇒ Object

Public: Print a message

topic - the topic of the message, e.g. "Configuration file", "Deprecation", etc. message - the message detail

Returns nothing



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# File 'lib/bridgetown-core/log_adapter.rb', line 64

def info(topic, message = nil, &)
  write(:info, topic, message, &)
end

#log_level=(level) ⇒ Object

Public: Set the log level on the writer

level - (symbol) the log level

Returns nothing



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# File 'lib/bridgetown-core/log_adapter.rb', line 31

def log_level=(level)
  writer.level = level if level.is_a?(Integer) && level.between?(0, 3)
  writer.level = LOG_LEVELS[level] ||
    raise(ArgumentError, "unknown log level")
  @level = level
end

#message(topic, message = nil) ⇒ Object

Internal: Build a topic method

topic - the topic of the message, e.g. "Configuration file", "Deprecation", etc. message - the message detail

Returns the formatted message

Raises:

  • (ArgumentError) 


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# File 'lib/bridgetown-core/log_adapter.rb', line 105

def message(topic, message = nil)
  raise ArgumentError, "block or message, not both" if block_given? && message

  message = yield if block_given?
  message = message.to_s.gsub(%r!\s+!, " ")
  topic = formatted_topic(topic, block_given?)
  out = topic + message
  messages << out
  out
end

#warn(topic, message = nil) ⇒ Object

Public: Print a message

topic - the topic of the message, e.g. "Configuration file", "Deprecation", etc. message - the message detail

Returns nothing



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# File 'lib/bridgetown-core/log_adapter.rb', line 74

def warn(topic, message = nil, &)
  write(:warn, topic, message, &)
end

#write(level_of_message, topic, message = nil) ⇒ Object

Internal: Log a message.

level_of_message - the Symbol level of message, one of :debug, :info, :warn, :error topic - the String topic or full message message - the String message (optional) block - a block containing the message (optional)

Returns false if the message was not written, otherwise returns the value of calling the appropriate writer method, e.g. writer.info.



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# File 'lib/bridgetown-core/log_adapter.rb', line 144

def write(level_of_message, topic, message = nil, &)
  return false unless write_message?(level_of_message)

  writer.public_send(level_of_message, message(topic, message, &))
end

#write_message?(level_of_message) ⇒ Boolean

Internal: Check if the message should be written given the log level.

level_of_message - the Symbol level of message, one of :debug, :info, :warn, :error

Returns whether the message should be written.

Returns:

  • (Boolean) 


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# File 'lib/bridgetown-core/log_adapter.rb', line 131

def write_message?(level_of_message)
  LOG_LEVELS.fetch(level) <= LOG_LEVELS.fetch(level_of_message)
end