def get_container_data_volumes(container, volumes_option, tmpfs_option):
"""Find the container data volumes that are in `volumes_option`, and return
a mapping of volume bindings for those volumes.
"""
volumes = []
volumes_option = volumes_option or []
container_mounts = dict(
(mount['Destination'], mount)
for mount in container.get('Mounts') or {}
)
image_volumes = [
VolumeSpec.parse(volume)
for volume in
container.image_config['ContainerConfig'].get('Volumes') or {}
]
for volume in set(volumes_option + image_volumes):
# No need to preserve host volumes
if volume.external:
continue
# Attempting to rebind tmpfs volumes breaks: https://github.com/docker/compose/issues/4751
if volume.internal in convert_tmpfs_mounts(tmpfs_option).keys():
continue
mount = container_mounts.get(volume.internal)
# New volume, doesn't exist in the old container
if not mount:
continue
# Volume was previously a host volume, now it's a container volume
if not mount.get('Name'):
continue
# Copy existing volume from old container
volume = volume._replace(external=mount['Name'])
volumes.append(volume)
return volumes
def get_container_data_volumes(container, volumes_option, tmpfs_option):
"""Find the container data volumes that are in `volumes_option`, and return
a mapping of volume bindings for those volumes.
"""
volumes = []
volumes_option = volumes_option or []
container_mounts = dict(
(mount['Destination'], mount)
for mount in container.get('Mounts') or {}
)
image_volumes = [
VolumeSpec.parse(volume)
for volume in
container.image_config['ContainerConfig'].get('Volumes') or {}
]
for volume in set(volumes_option + image_volumes):
# No need to preserve host volumes
if volume.external:
continue
# Attempting to rebind tmpfs volumes breaks: https://github.com/docker/compose/issues/4751
if volume.internal in convert_tmpfs_mounts(tmpfs_option).keys():
continue
mount = container_mounts.get(volume.internal)
# New volume, doesn't exist in the old container
if not mount:
continue
# Volume was previously a host volume, now it's a container volume
if not mount.get('Name'):
continue
# Copy existing volume from old container
volume = volume._replace(external=mount['Name'])
volumes.append(volume)
return volumes
