::Logging::Appenders::IO
Asserts that the given filename can be used as a log file by ensuring that if the file exists it is a regular file and it is writable. If the file does not exist, then the directory is checked to see if it is writable.
An ArgumentError is raised if any of these assertions fail.
# File lib/logging/appenders/file.rb, line 25 25: def self.assert_valid_logfile( fn ) 26: if ::File.exist?(fn) 27: if not ::File.file?(fn) 28: raise ArgumentError, "#{fn} is not a regular file" 29: elsif not ::File.writable?(fn) 30: raise ArgumentError, "#{fn} is not writeable" 31: end 32: elsif not ::File.writable?(::File.dirname(fn)) 33: raise ArgumentError, "#{::File.dirname(fn)} is not writable" 34: end 35: true 36: end
Creates a new File Appender that will use the given filename as the logging destination. If the file does not already exist it will be created. If the :truncate option is set to true then the file will be truncated before writing begins; otherwise, log messages will be appended to the file.
# File lib/logging/appenders/file.rb, line 49 49: def initialize( name, opts = {} ) 50: @fn = opts.getopt(:filename, name) 51: raise ArgumentError, 'no filename was given' if @fn.nil? 52: 53: @fn = ::File.expand_path(@fn) 54: self.class.assert_valid_logfile(@fn) 55: @mode = opts.getopt(:truncate) ? 'w' : 'a' 56: 57: super(name, ::File.new(@fn, @mode), opts) 58: end
Returns the path to the logfile.
# File lib/logging/appenders/file.rb, line 62 62: def filename() @fn.dup end
Reopen the connection to the underlying logging destination. If the connection is currently closed then it will be opened. If the connection is currently open then it will be closed and immediately opened.
# File lib/logging/appenders/file.rb, line 68 68: def reopen 69: @mutex.synchronize { 70: if defined? @io and @io 71: flush 72: @io.close rescue nil 73: end 74: @io = ::File.new(@fn, @mode) 75: } 76: super 77: self 78: end
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