Class: Gitlab::Ci::Trace::Stream

Inherits:
Object
  • Object
show all
Defined in:
lib/gitlab/ci/trace/stream.rb

Overview

This was inspired from: stackoverflow.com/a/10219411/1520132

Constant Summary collapse

BUFFER_SIZE = 
4096
LIMIT_SIZE = 
500.kilobytes

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Stream

Returns a new instance of Stream.


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# File 'lib/gitlab/ci/trace/stream.rb', line 19

def initialize
  @stream = yield
  @stream&.binmode
end

Instance Attribute Details

#stream ⇒ Object (readonly)

Returns the value of attribute stream


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# File 'lib/gitlab/ci/trace/stream.rb', line 11

def stream
  @stream
end

Instance Method Details

#append(data, offset) ⇒ Object 


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# File 'lib/gitlab/ci/trace/stream.rb', line 43

def append(data, offset)
  data = data.force_encoding(Encoding::BINARY)

  stream.seek(offset, IO::SEEK_SET)
  stream.write(data)
  stream.truncate(offset + data.bytesize)
  stream.flush
end

#extract_coverage(regex) ⇒ Object 


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# File 'lib/gitlab/ci/trace/stream.rb', line 72

def extract_coverage(regex)
  return unless valid?
  return unless regex.present?

  regex = Gitlab::UntrustedRegexp.new(regex)

  match = ""

  reverse_line do |line|
    line.chomp!
    matches = regex.scan(line)
    next unless matches.is_a?(Array)
    next if matches.empty?

    match = matches.flatten.last
    coverage = match.gsub(/\d+(\.\d+)?/).first
    return coverage if coverage.present? # rubocop:disable Cop/AvoidReturnFromBlocks
  end

  nil
rescue
  # if bad regex or something goes wrong we dont want to interrupt transition
  # so we just silently ignore error for now
end

#extract_sections ⇒ Object 


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# File 'lib/gitlab/ci/trace/stream.rb', line 97

def extract_sections
  return [] unless valid?

  lines = to_enum(:each_line_with_pos)
  parser = SectionParser.new(lines)

  parser.parse!
  parser.sections
end

#file? ⇒ Boolean

Returns:

  • (Boolean) 

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# File 'lib/gitlab/ci/trace/stream.rb', line 28

def file?
  self.path.present?
end

#html(last_lines: nil) ⇒ Object 


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# File 'lib/gitlab/ci/trace/stream.rb', line 66

def html(last_lines: nil)
  text = raw(last_lines: last_lines)
  buffer = StringIO.new(text)
  ::Gitlab::Ci::Ansi2html.convert(buffer).html
end

#limit(last_bytes = LIMIT_SIZE) ⇒ Object 


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# File 'lib/gitlab/ci/trace/stream.rb', line 36

def limit(last_bytes = LIMIT_SIZE)
  if last_bytes < size
    stream.seek(-last_bytes, IO::SEEK_END)
    stream.readline
  end
end

#path ⇒ Object 


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# File 'lib/gitlab/ci/trace/stream.rb', line 32

def path
  self.stream.path if self.stream.respond_to?(:path)
end

#present? ⇒ Object 


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# File 'lib/gitlab/ci/trace/stream.rb', line 17

alias_method :present?, :valid?

#raw(last_lines: nil) ⇒ Object 


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# File 'lib/gitlab/ci/trace/stream.rb', line 56

def raw(last_lines: nil)
  return unless valid?

  if last_lines.to_i > 0
    read_last_lines(last_lines)
  else
    stream.read
  end.force_encoding(Encoding.default_external)
end

#set(data) ⇒ Object 


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# File 'lib/gitlab/ci/trace/stream.rb', line 52

def set(data)
  append(data, 0)
end

#valid? ⇒ Boolean

Returns:

  • (Boolean) 

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# File 'lib/gitlab/ci/trace/stream.rb', line 24

def valid?
  self.stream.present?
end