hometown/lib/terrapin/multi_pipe_extensions.rb
Eugen Rochko 036556d350
Fix media processing getting stuck on too much stdin/stderr (#16136)
* Fix media processing getting stuck on too much stdin/stderr

See thoughtbot/terrapin#5

* Remove dependency on paperclip-av-transcoder gem

* Remove dependency on streamio-ffmpeg gem

* Disable stdin on ffmpeg process
2021-05-05 19:44:01 +02:00

64 lines
1.3 KiB
Ruby

# frozen_string_literal: false
# Fix adapted from https://github.com/thoughtbot/terrapin/pull/5
module Terrapin
module MultiPipeExtensions
def read
read_streams(@stdout_in, @stderr_in)
end
def close_read
begin
@stdout_in.close
rescue IOError
# Do nothing
end
begin
@stderr_in.close
rescue IOError
# Do nothing
end
end
def read_streams(output, error)
@stdout_output = ''
@stderr_output = ''
read_fds = [output, error]
until read_fds.empty?
to_read, = IO.select(read_fds)
if to_read.include?(output)
@stdout_output << read_stream(output)
read_fds.delete(output) if output.closed?
end
if to_read.include?(error)
@stderr_output << read_stream(error)
read_fds.delete(error) if error.closed?
end
end
end
def read_stream(io)
result = ''
begin
while (partial_result = io.read_nonblock(8192))
result << partial_result
end
rescue EOFError, Errno::EPIPE
io.close
rescue Errno::EINTR, Errno::EWOULDBLOCK, Errno::EAGAIN
# Do nothing
end
result
end
end
end
Terrapin::CommandLine::MultiPipe.prepend(Terrapin::MultiPipeExtensions)