def push_file(self, source: str, destination: str):
cmd = [
"lxc",
"file",
"push",
source,
"{}{}".format(self._instance_name, destination),
]
try:
_run(cmd)
except subprocess.CalledProcessError as process_error:
raise _provider_errors.ProviderFileCopyError(
provider_name="lxd",
exit_code=process_error.returncode) from process_error
def copy_files(self, *, source: str, destination: str) -> None:
"""Passthrough for running multipass copy-files.
:param str source: the source file to copy, using syntax expected
by multipass.
:param str destination: the destination of the copied file, using
syntax expected by multipass.
"""
cmd = [self.provider_cmd, "copy-files", source, destination]
try:
_run(cmd)
except subprocess.CalledProcessError as process_error:
raise errors.ProviderFileCopyError(
provider_name=self.provider_name, exit_code=process_error.returncode
) from process_error
def pull_file(self,
*,
source: str,
destination: IO,
bufsize: int = 1024) -> None:
"""Passthrough for pulling a file through `multipass transfer`
:param str or IO source: the source file to copy, using syntax expected
by multipass
:param str or IO destination: a file-like object to write to
"""
assert isinstance(destination, io.IOBase)
# can't use std{in,out}=open(...) due to LP#1849753
p = _popen(
[self.provider_cmd, "transfer", source, "-"],
stdin=subprocess.DEVNULL,
stdout=subprocess.PIPE,
)
while True:
written = p.stdout.read(bufsize)
if written:
destination.write(written)
if len(written) < bufsize:
logger.debug("Finished streaming standard output")
break
while True:
try:
out, err = p.communicate(timeout=1)
except subprocess.TimeoutExpired:
pass
else:
if out:
destination.write(out)
if p.returncode == 0:
logger.debug("Process completed")
break
elif p.returncode is not None:
raise errors.ProviderFileCopyError(
provider_name=self.provider_name,
exit_code=p.returncode)
def push_file(self,
*,
source: IO,
destination: str,
bufsize: int = 1024) -> None:
"""Passthrough for pushing a file through `multipass transfer`.
:param IO source: a file-like object to read from
:param str destination: the destination of the copied file, using syntax
expected by multipass
"""
assert isinstance(source, io.IOBase)
# can't use std{in,out}=open(...) due to LP#1849753
p = _popen([self.provider_cmd, "transfer", "-", destination],
stdin=subprocess.PIPE)
while True:
read = source.read(bufsize)
if read:
p.stdin.write(read)
if len(read) < bufsize:
logger.debug("Finished streaming source file")
break
while True:
try:
out, err = p.communicate(timeout=1)
except subprocess.TimeoutExpired:
pass
else:
if p.returncode == 0:
logger.debug("Process completed")
break
elif p.returncode is not None:
raise errors.ProviderFileCopyError(
provider_name=self.provider_name,
exit_code=p.returncode)
