strided logging
@@ -28,8 +28,9 @@ def _get_url_size(fname, **open_kwargs):
def _copy_btw_filesystems(input_opener, output_opener, BLOCK_SIZE=10_000_000):
with input_opener as source:
with output_opener as target:
+ count = summed_bytes = 0
while True:
- logger.debug("_copy_btw_filesystems reading data")
+ logger.debug("_copy_btw_filesystems reading") if source.block_size != 0 else None
try:
data = source.read(BLOCK_SIZE)
except BlockSizeError as e:
@@ -39,6 +40,17 @@ def _copy_btw_filesystems(input_opener, output_opener, BLOCK_SIZE=10_000_000):
) from e
if not data:
break
+ # strided logging pattern for streaming transfers to avoid excessive logs
+ if source.block_size == 0:
+ summed_bytes += len(data)
+ if summed_bytes // BLOCK_SIZE >= count:
+ logger.debug(
+ f"_copy_btw_filesystems copying block {count} of ~{BLOCK_SIZE} bytes"
+ )
+ count += 1
+ else:
+ pass
+ else:
logger.debug(f"_copy_btw_filesystems copying block of {len(data)} bytes")
target.write(data)
logger.debug("_copy_btw_filesystems done")
