Current File : //proc/25810/root/lib/python3.6/site-packages/compose/progress_stream.py
from __future__ import absolute_import
from __future__ import unicode_literals
from compose import utils
class StreamOutputError(Exception):
pass
def stream_output(output, stream):
is_terminal = hasattr(stream, 'isatty') and stream.isatty()
stream = utils.get_output_stream(stream)
all_events = []
lines = {}
diff = 0
for event in utils.json_stream(output):
all_events.append(event)
is_progress_event = 'progress' in event or 'progressDetail' in event
if not is_progress_event:
print_output_event(event, stream, is_terminal)
stream.flush()
continue
if not is_terminal:
continue
# if it's a progress event and we have a terminal, then display the progress bars
image_id = event.get('id')
if not image_id:
continue
if image_id not in lines:
lines[image_id] = len(lines)
stream.write("\n")
diff = len(lines) - lines[image_id]
# move cursor up `diff` rows
stream.write("%c[%dA" % (27, diff))
print_output_event(event, stream, is_terminal)
if 'id' in event:
# move cursor back down
stream.write("%c[%dB" % (27, diff))
stream.flush()
return all_events
def print_output_event(event, stream, is_terminal):
if 'errorDetail' in event:
raise StreamOutputError(event['errorDetail']['message'])
terminator = ''
if is_terminal and 'stream' not in event:
# erase current line
stream.write("%c[2K\r" % 27)
terminator = "\r"
elif 'progressDetail' in event:
return
if 'time' in event:
stream.write("[%s] " % event['time'])
if 'id' in event:
stream.write("%s: " % event['id'])
if 'from' in event:
stream.write("(from %s) " % event['from'])
status = event.get('status', '')
if 'progress' in event:
stream.write("%s %s%s" % (status, event['progress'], terminator))
elif 'progressDetail' in event:
detail = event['progressDetail']
total = detail.get('total')
if 'current' in detail and total:
percentage = float(detail['current']) / float(total) * 100
stream.write('%s (%.1f%%)%s' % (status, percentage, terminator))
else:
stream.write('%s%s' % (status, terminator))
elif 'stream' in event:
stream.write("%s%s" % (event['stream'], terminator))
else:
stream.write("%s%s\n" % (status, terminator))
def get_digest_from_pull(events):
for event in events:
status = event.get('status')
if not status or 'Digest' not in status:
continue
_, digest = status.split(':', 1)
return digest.strip()
return None
def get_digest_from_push(events):
for event in events:
digest = event.get('aux', {}).get('Digest')
if digest:
return digest
return None
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