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file_upload demo: yield write() cb in body_producer

This commit is contained in:
Pierce Lopez 2017-09-08 17:49:55 -04:00
parent 34c43f4775
commit ab42d83714
1 changed files with 9 additions and 13 deletions
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22
demos/file_upload/file_uploader.py
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@ -34,28 +34,24 @@ def multipart_producer(boundary, filenames, write):
for filename in filenames:
filename_bytes = filename.encode()
write(b'--%s\r\n' % (boundary_bytes,))
write(b'Content-Disposition: form-data; name="%s"; filename="%s"\r\n' %
(filename_bytes, filename_bytes))
yield write(b'--%s\r\n' % (boundary_bytes,))
yield write(b'Content-Disposition: form-data; name="%s"; filename="%s"\r\n' %
(filename_bytes, filename_bytes))
mtype = mimetypes.guess_type(filename)[0] or 'application/octet-stream'
write(b'Content-Type: %s\r\n' % (mtype.encode(),))
write(b'\r\n')
yield write(b'Content-Type: %s\r\n' % (mtype.encode(),))
yield write(b'\r\n')
with open(filename, 'rb') as f:
while True:
# 16k at a time.
chunk = f.read(16 * 1024)
if not chunk:
break
write(chunk)
yield write(chunk)
# Let the IOLoop process its event queue.
yield gen.moment
yield write(b'\r\n')
write(b'\r\n')
yield gen.moment
write(b'--%s--\r\n' % (boundary_bytes,))
yield write(b'--%s--\r\n' % (boundary_bytes,))
# Using HTTP PUT, upload one raw file. This is preferred for large files since
@ -84,7 +80,7 @@ def raw_producer(filename, write):
# Complete.
break
write(chunk)
yield write(chunk)
@gen.coroutine