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ansible
Commits
5a64b2e2
Commit
5a64b2e2
authored
Feb 26, 2015
by
Brian Coca
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Merge pull request #10305 from bcoca/cartesian
Cartesian
parents
68a06e54
965680a1
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4 deletions
+113
-4
docsite/rst/playbooks_lookups.rst
+8
-4
lib/ansible/runner/lookup_plugins/cartesian.py
+59
-0
v2/ansible/plugins/lookup/cartesian.py
+46
-0
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docsite/rst/playbooks_lookups.rst
View file @
5a64b2e2
...
...
@@ -97,10 +97,6 @@ To enter comma use two commas ',,' somewhere - preferably at the end. Quotes and
More Lookups
````````````
.. note:: This feature is very infrequently used in Ansible. You may wish to skip this section.
.. versionadded:: 0.8
Various *lookup plugins* allow additional ways to iterate over data. In :doc:`Loops <playbooks_loops>` you will learn
how to use them to walk over collections of numerous types. However, they can also be used to pull in data
from remote sources, such as shell commands or even key value stores. This section will cover lookup
...
...
@@ -131,10 +127,18 @@ Here are some examples::
- debug: msg="{{ lookup('etcd', 'foo') }} is a value from a locally running etcd"
# The following lookups were added in 1.9
- debug: msg="{{item}}"
with_url:
- 'http://github.com/gremlin.keys'
# outputs the cartesian product of the supplied lists
- debug: msg="{{item}}"
with_cartesian:
- list1
- list2
- list3
As an alternative you can also assign lookup plugins to variables or use them
elsewhere. This macros are evaluated each time they are used in a task (or
template)::
...
...
lib/ansible/runner/lookup_plugins/cartesian.py
0 → 100644
View file @
5a64b2e2
# (c) 2013, Bradley Young <young.bradley@gmail.com>
#
# This file is part of Ansible
#
# Ansible 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.
#
# Ansible 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 Ansible. If not, see <http://www.gnu.org/licenses/>.
import
ansible.utils
as
utils
import
ansible.errors
as
errors
from
itertools
import
product
def
flatten
(
terms
):
ret
=
[]
for
term
in
terms
:
if
isinstance
(
term
,
list
):
ret
.
extend
(
term
)
elif
isinstance
(
term
,
tuple
):
ret
.
extend
(
term
)
else
:
ret
.
append
(
term
)
return
ret
class
LookupModule
(
object
):
"""
Create the cartesian product of lists
[1, 2, 3], [a, b] -> [1, a], [1, b], [2, a], [2, b], [3, a], [3, b]
"""
def
__init__
(
self
,
basedir
=
None
,
**
kwargs
):
self
.
basedir
=
basedir
def
__lookup_injects
(
self
,
terms
,
inject
):
results
=
[]
for
x
in
terms
:
intermediate
=
utils
.
listify_lookup_plugin_terms
(
x
,
self
.
basedir
,
inject
)
results
.
append
(
intermediate
)
return
results
def
run
(
self
,
terms
,
inject
=
None
,
**
kwargs
):
terms
=
utils
.
listify_lookup_plugin_terms
(
terms
,
self
.
basedir
,
inject
)
terms
=
self
.
__lookup_injects
(
terms
,
inject
)
my_list
=
terms
[:]
if
len
(
my_list
)
==
0
:
raise
errors
.
AnsibleError
(
"with_cartesian requires at least one element in each list"
)
return
[
flatten
(
x
)
for
x
in
product
(
*
my_list
)]
v2/ansible/plugins/lookup/cartesian.py
0 → 100644
View file @
5a64b2e2
# (c) 2013, Bradley Young <young.bradley@gmail.com>
#
# This file is part of Ansible
#
# Ansible 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.
#
# Ansible 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 Ansible. If not, see <http://www.gnu.org/licenses/>.
from
itertools
import
product
from
ansible.errors
import
*
from
ansible.plugins.lookup
import
LookupBase
from
ansible.utils.listify
import
listify_lookup_plugin_terms
class
LookupModule
(
LookupBase
):
"""
Create the cartesian product of lists
[1, 2, 3], [a, b] -> [1, a], [1, b], [2, a], [2, b], [3, a], [3, b]
"""
def
__lookup_variabless
(
self
,
terms
,
variables
):
results
=
[]
for
x
in
terms
:
intermediate
=
listify_lookup_plugin_terms
(
x
,
variables
,
loader
=
self
.
_loader
)
results
.
append
(
intermediate
)
return
results
def
run
(
self
,
terms
,
variables
=
None
,
**
kwargs
):
terms
=
self
.
__lookup_variabless
(
terms
,
variables
)
my_list
=
terms
[:]
if
len
(
my_list
)
==
0
:
raise
errors
.
AnsibleError
(
"with_cartesian requires at least one element in each list"
)
return
[
self
.
_flatten
(
x
)
for
x
in
product
(
*
my_list
,
fillvalue
=
None
)]
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