Reading the entire tar file into memory can result in out-of-memory
conditions such as this traceback:
Traceback (most recent call last):
File "/tmp/ansible_YELTSu/ansible_module_docker_image.py", line 486, in load_image
self.client.load_image(image_data)
File "/usr/local/lib/python2.7/dist-packages/docker/api/image.py", line 147, in load_image
res = self._post(self._url("/images/load"), data=data)
...
File "/usr/lib/python2.7/httplib.py", line 997, in endheaders
self._send_output(message_body)
File "/usr/lib/python2.7/httplib.py", line 848, in _send_output
msg += message_body
MemoryError
Luckily docker-py's load_image(), which calls requests post(), accepts a
file-like object instead of a string. Pass in the file object to avoid
reading the full file into memory. This allows larger tar files to load
succesfully.
Signed-off-by: Stefan Hajnoczi <stefanha@gmail.com>
* This moves the lines in the code that parse the `env` and `env_file` options for docker to the end of the `__init__()` function.
This is needed because the `_check_capabilites` function needs both a working `self.client` and a proper `self.docker_py_versioninfo`.
`_check_capabilities` is used by `ensure_capabilities` which is, in turn, used by `get_environment`
This means that before this commit, the environment variables could not be loaded because both `self.client` and `self.docker_py_versioninfo` were not set at that time.
This commit fixes that by putting the environment variable parsing after those two.
* This moves the lines in the code that parse the `env` and `env_file` options for docker to the end of the `__init__()` function.
This is needed because the `_check_capabilites` function needs both a working `self.client` and a proper `self.docker_py_versioninfo`.
`_check_capabilities` is used by `ensure_capabilities` which is, in turn, used by `get_environment`
This means that before this commit, the environment variables could not be loaded because both `self.client` and `self.docker_py_versioninfo` were not set at that time.
This commit fixes that by putting the environment variable parsing after those two.
