Add new type __docker_stack

This commit is contained in:
lubo 2018-03-13 11:26:25 +01:00
parent e4f263ecb7
commit 7184228536
6 changed files with 145 additions and 0 deletions
cdist/conf/type/__docker_stack

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#!/bin/sh -e
#
# 2018 Ľubomír Kučera <lubomir.kucera.jr at gmail.com>
#
# This file is part of cdist.
#
# cdist is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# cdist is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with cdist. If not, see <http://www.gnu.org/licenses/>.
#
if docker stack ls | grep -q "^${__object_id:?} "; then
echo 1
else
echo 0
fi

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#!/bin/sh -e
#
# 2018 Ľubomír Kučera <lubomir.kucera.jr at gmail.com>
#
# This file is part of cdist.
#
# cdist is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# cdist is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with cdist. If not, see <http://www.gnu.org/licenses/>.
#
stack="${__object_id:?}"
state=$(cat "${__object:?}/parameter/state")
case "${state}" in
absent)
stack_exists=$(cat "${__object:?}/explorer/stack-exists")
if [ "${stack_exists}" -ne 1 ]; then
exit 0
fi
echo "docker stack rm ${stack}"
;;
present)
compose_file=$(cat "${__object}/parameter/compose-file")
if [ -z "${compose_file}" ]; then
exit 0
fi
if [ "${compose_file}" = "-" ]; then
compose_file="${__object}/stdin"
fi
cat <<-EOF
compose_file="\$(mktemp cdist.XXXXXXXXXX)"
base64 -d > "\${compose_file}" << eof
$(base64 "${compose_file}")
eof
docker stack deploy --compose-file "\${compose_file}" \
--prune ${stack}
rm "\${compose_file}"
EOF
;;
*)
echo "Unsupported state: ${state}" >&2
exit 1
;;
esac

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cdist-type__docker_stack(7)
===========================
NAME
----
cdist-type__docker_stack - Manage Docker stacks
DESCRIPTION
-----------
This type manages service stacks.
.. note::
Since there is no easy way to tell whether a stack needs to be updated,
`docker stack deploy` is being run every time this type is invoked.
However, it does not mean this type is not idempotent. If Docker does not
detect changes, the existing stack will not be updated.
OPTIONAL PARAMETERS
-------------------
compose-file
Path to the compose file. If it is '-' (dash), read standard input.
state
'present' or 'absent', defaults to 'present' where:
present
the stack is deployed
absent
the stack is removed
EXAMPLES
--------
.. code-block:: sh
# Deploys 'foo' stack defined in 'docker-compose.yml' compose file
__docker_stack foo --compose-file docker-compose.yml
AUTHORS
-------
Ľubomír Kučera <lubomir.kucera.jr at gmail.com>
COPYING
-------
Copyright \(C) 2018 Ľubomír Kučera. You can redistribute it
and/or modify it under the terms of the GNU General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.

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present

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compose-file
state