class Bricolage::LogLocator

Attributes

path[R]

Public Class Methods

empty() click to toggle source
# File lib/bricolage/loglocator.rb, line 3
def LogLocator.empty
  new(nil, nil)
end
new(path, s3_writer) click to toggle source
# File lib/bricolage/loglocator.rb, line 7
def initialize(path, s3_writer)
  @path = path
  @s3_writer = s3_writer
end
slice_last_stderr(re, nth = 0) click to toggle source

CLUDGE: FIXME: We redirect stderr to the file, we can find error messages from there. Using a temporary file or Ruby SQL driver is MUCH better.

# File lib/bricolage/loglocator.rb, line 41
def self.slice_last_stderr(re, nth = 0)
  return unless $stderr.stat.file?
  $stderr.flush
  f = $stderr.dup
  matched = nil
  begin
    f.seek(0)
    f.each do |line|
      m = line.slice(re, nth)
      matched = m if m
    end
  ensure
    f.close
  end
  matched = matched.to_s.strip
  matched.empty? ? nil : matched
end

Public Instance Methods

redirect_stdouts() { || ... } click to toggle source
# File lib/bricolage/loglocator.rb, line 19
def redirect_stdouts
  return yield unless @path
  FileUtils.mkdir_p File.dirname(@path)
  @original_stdout = $stdout.dup
  @original_stderr = $stderr.dup
  begin
    # Use 'w+' to make readable for retrieve_last_match_from_stderr
    File.open(@path, 'w+') {|f|
      f.sync = true
      $stdout.reopen f
      $stderr.reopen f
    }
    return yield
  ensure
    $stdout.reopen @original_stdout; @original_stdout.close
    $stderr.reopen @original_stderr; @original_stderr.close
    upload
  end
end
s3_url() click to toggle source
# File lib/bricolage/loglocator.rb, line 14
def s3_url
  return nil unless @s3_writer
  @s3_writer.url
end
upload() click to toggle source
# File lib/bricolage/loglocator.rb, line 59
def upload
  return unless @path
  return unless @s3_writer
  # FIXME: Shows HTTP URL?
  puts "bricolage: S3 log: #{s3_url}"
  begin
    @s3_writer.upload(path)
  rescue => ex
    puts "warning: S3 upload failed: #{s3_url}"
  end
end