On 18/05/21 2:24 am, Brian Coca wrote:
For data manipulation you want to create a filter plugin, you still
need to be explicit about the data you feed it.
Thanks for that - this is what I've ended up with. There's probably some
copy/paste boilerplate that's not needed in my case.
Does it look reasonable?
I've had a suggestion that I should avoid lineinfile, but I'm not sure
what a good substitute is (other than rearranging my setup so I can
template out individual files, rather than editing the existing one).
Cheers,
Richard
------task----------------
- name: update dirvish-forced-command list
lineinfile:
dest: "/usr/local/etc/dirvish-forced-command/default.list"
regexp: "^{{ item }}$"
line: "{{ item }}"
insertafter: EOF
delegate_to: "{{ container_host }}"
with_items: "{{ backup_paths | gen_dfc_lines(inventory_hostname,
filesystems) }}"
tags:
- backup
------plugin------------
from __future__ import (absolute_import, division, print_function)
__metaclass__ = type
from ansible.errors import AnsibleError, AnsibleFilterError,
AnsibleFilterTypeError
from ansible.module_utils.six import string_types, integer_types,
reraise, text_type
def gen_dfc_lines(backup_paths, container_name, filesystems):
'''Generate a list of lines for dirvish_forced_command'''
if not isinstance(filesystems, list):
raise AnsibleFilterTypeError('filesystems should be a list')
if not isinstance(backup_paths, list):
raise AnsibleFilterTypeError('backup_paths should be a list')
fixed_backup_paths = []
for path_entry in backup_paths:
found = False
for fs_entry in filesystems:
path = path_entry['path']
fs = fs_entry['container_mountpoint']
if path.startswith(fs):
# remove prefix from path
path = '/' + path[len(fs):]
# use guestfs path
fixed_path = "/guestfs/{cname}-{suffix}{bpath}".format(
cname = container_name,
suffix = fs_entry['suffix'],
bpath = path
)
found = True
if not found:
# use rootfs path
fixed_path = "/var/lib/lxc/{cname}/rootfs{bpath}".format(
cname = container_name,
bpath = path
)
fixed_backup_paths.append(fixed_path)
return fixed_backup_paths
class FilterModule(object):
''' backup helper filters '''
def filters(self):
return {
'gen_dfc_lines': gen_dfc_lines
}
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