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target: Add Target.pull(via_temp=False) parameter

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Allow pulling a file via a temporary location on the target, to
side-step performance issues when pulling big files from sysfs.
This commit is contained in:
Douglas Raillard
2021-08-12 18:13:37 +01:00
committed by Marc Bonnici
parent 477e82c444
commit b719808ef2
2 changed files with 13 additions and 5 deletions
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12
devlib/target.py
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@@ -649,7 +649,7 @@ class Target(object):
return paths
@call_conn
def pull(self, source, dest, as_root=False, timeout=None, globbing=False): # pylint: disable=arguments-differ
def pull(self, source, dest, as_root=False, timeout=None, globbing=False, via_temp=False): # pylint: disable=arguments-differ
source = str(source)
dest = str(dest)
@@ -658,17 +658,21 @@ class Target(object):
else:
sources = [source]
# The SSH server might not have the right permissions to read the file,
# so use a temporary copy instead.
via_temp |= as_root
mapping = self._prepare_xfer('pull', sources, dest, pattern=source if globbing else None, as_root=as_root)
def do_pull(sources, dest):
self.conn.pull(sources, dest, timeout=timeout)
if as_root:
if via_temp:
for sources, dest in mapping.items():
for source in sources:
with self._xfer_cache_path(source) as device_tempfile:
self.execute("cp -r -- {} {}".format(quote(source), quote(device_tempfile)), as_root=True)
self.execute("{} chmod 0644 -- {}".format(self.busybox, quote(device_tempfile)), as_root=True)
self.execute("cp -r -- {} {}".format(quote(source), quote(device_tempfile)), as_root=as_root)
self.execute("{} chmod 0644 -- {}".format(self.busybox, quote(device_tempfile)), as_root=as_root)
do_pull([device_tempfile], dest)
else:
for sources, dest in mapping.items():