117 lines
3.2 KiB
Python
117 lines
3.2 KiB
Python
from __future__ import absolute_import
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from __future__ import unicode_literals
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from compose import utils
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class StreamOutputError(Exception):
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pass
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def write_to_stream(s, stream):
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try:
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stream.write(s)
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except UnicodeEncodeError:
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encoding = getattr(stream, 'encoding', 'ascii')
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stream.write(s.encode(encoding, errors='replace').decode(encoding))
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def stream_output(output, stream):
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is_terminal = hasattr(stream, 'isatty') and stream.isatty()
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stream = utils.get_output_stream(stream)
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lines = {}
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diff = 0
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for event in utils.json_stream(output):
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yield event
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is_progress_event = 'progress' in event or 'progressDetail' in event
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if not is_progress_event:
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print_output_event(event, stream, is_terminal)
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stream.flush()
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continue
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if not is_terminal:
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continue
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# if it's a progress event and we have a terminal, then display the progress bars
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image_id = event.get('id')
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if not image_id:
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continue
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if image_id not in lines:
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lines[image_id] = len(lines)
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write_to_stream("\n", stream)
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diff = len(lines) - lines[image_id]
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# move cursor up `diff` rows
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write_to_stream("%c[%dA" % (27, diff), stream)
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print_output_event(event, stream, is_terminal)
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if 'id' in event:
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# move cursor back down
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write_to_stream("%c[%dB" % (27, diff), stream)
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stream.flush()
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def print_output_event(event, stream, is_terminal):
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if 'errorDetail' in event:
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raise StreamOutputError(event['errorDetail']['message'])
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terminator = ''
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if is_terminal and 'stream' not in event:
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# erase current line
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write_to_stream("%c[2K\r" % 27, stream)
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terminator = "\r"
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elif 'progressDetail' in event:
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return
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if 'time' in event:
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write_to_stream("[%s] " % event['time'], stream)
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if 'id' in event:
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write_to_stream("%s: " % event['id'], stream)
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if 'from' in event:
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write_to_stream("(from %s) " % event['from'], stream)
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status = event.get('status', '')
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if 'progress' in event:
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write_to_stream("%s %s%s" % (status, event['progress'], terminator), stream)
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elif 'progressDetail' in event:
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detail = event['progressDetail']
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total = detail.get('total')
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if 'current' in detail and total:
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percentage = float(detail['current']) / float(total) * 100
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write_to_stream('%s (%.1f%%)%s' % (status, percentage, terminator), stream)
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else:
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write_to_stream('%s%s' % (status, terminator), stream)
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elif 'stream' in event:
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write_to_stream("%s%s" % (event['stream'], terminator), stream)
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else:
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write_to_stream("%s%s\n" % (status, terminator), stream)
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def get_digest_from_pull(events):
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digest = None
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for event in events:
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status = event.get('status')
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if not status or 'Digest' not in status:
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continue
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else:
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digest = status.split(':', 1)[1].strip()
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return digest
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def get_digest_from_push(events):
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for event in events:
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digest = event.get('aux', {}).get('Digest')
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if digest:
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return digest
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return None
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