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authorAndrew Butcher <abutcher@redhat.com>2016-02-11 15:23:43 -0500
committerAndrew Butcher <abutcher@redhat.com>2016-02-16 14:21:09 -0500
commit5dd58c31d6e3b9254c8d90c7138a62e1d39e2f5f (patch)
treeaf9a4cf709e07917d1fc95b5fd23178df1d5e339 /playbooks/common/openshift-master
parent16e1f777e1df9371c4570aed149b29bd4cdc1a6f (diff)
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Add modify_yaml module.
Diffstat (limited to 'playbooks/common/openshift-master')
-rwxr-xr-xplaybooks/common/openshift-master/library/modify_yaml.py95
-rw-r--r--playbooks/common/openshift-master/scaleup.yml6
2 files changed, 98 insertions, 3 deletions
diff --git a/playbooks/common/openshift-master/library/modify_yaml.py b/playbooks/common/openshift-master/library/modify_yaml.py
new file mode 100755
index 000000000..a4be10ca3
--- /dev/null
+++ b/playbooks/common/openshift-master/library/modify_yaml.py
@@ -0,0 +1,95 @@
+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+# vim: expandtab:tabstop=4:shiftwidth=4
+
+''' modify_yaml ansible module '''
+
+import yaml
+
+DOCUMENTATION = '''
+---
+module: modify_yaml
+short_description: Modify yaml key value pairs
+author: Andrew Butcher
+requirements: [ ]
+'''
+EXAMPLES = '''
+- modify_yaml:
+ dest: /etc/origin/master/master-config.yaml
+ yaml_key: 'kubernetesMasterConfig.masterCount'
+ yaml_value: 2
+'''
+
+def main():
+ ''' Modify key (supplied in jinja2 dot notation) in yaml file, setting
+ the key to the desired value.
+ '''
+
+ # disabling pylint errors for global-variable-undefined and invalid-name
+ # for 'global module' usage, since it is required to use ansible_facts
+ # pylint: disable=global-variable-undefined, invalid-name,
+ # redefined-outer-name
+ global module
+
+ module = AnsibleModule(
+ argument_spec=dict(
+ dest=dict(required=True),
+ yaml_key=dict(required=True),
+ yaml_value=dict(required=True),
+ backup=dict(required=False, default=True, type='bool'),
+ ),
+ supports_check_mode=True,
+ )
+
+ dest = module.params['dest']
+ yaml_key = module.params['yaml_key']
+ yaml_value = module.safe_eval(module.params['yaml_value'])
+ backup = module.params['backup']
+
+ # Represent null values as an empty string.
+ # pylint: disable=missing-docstring, unused-argument
+ def none_representer(dumper, data):
+ return yaml.ScalarNode(tag=u'tag:yaml.org,2002:null', value=u'')
+ yaml.add_representer(type(None), none_representer)
+
+ try:
+ changes = []
+
+ yaml_file = open(dest)
+ yaml_data = yaml.safe_load(yaml_file.read())
+ yaml_file.close()
+
+ ptr = yaml_data
+ for key in yaml_key.split('.'):
+ if key not in ptr and key != yaml_key.split('.')[-1]:
+ ptr[key] = {}
+ elif key == yaml_key.split('.')[-1]:
+ if (key in ptr and module.safe_eval(ptr[key]) != yaml_value) or (key not in ptr):
+ ptr[key] = yaml_value
+ changes.append((yaml_key, yaml_value))
+ else:
+ ptr = ptr[key]
+
+ if len(changes) > 0:
+ if backup:
+ module.backup_local(dest)
+ yaml_file = open(dest, 'w')
+ yaml_string = yaml.dump(yaml_data, default_flow_style=False)
+ yaml_string = yaml_string.replace('\'\'', '""')
+ yaml_file.write(yaml_string)
+ yaml_file.close()
+
+ return module.exit_json(changed=(len(changes) > 0), changes=changes)
+
+ # ignore broad-except error to avoid stack trace to ansible user
+ # pylint: disable=broad-except
+ except Exception, e:
+ return module.fail_json(msg=str(e))
+
+# ignore pylint errors related to the module_utils import
+# pylint: disable=redefined-builtin, unused-wildcard-import, wildcard-import
+# import module snippets
+from ansible.module_utils.basic import *
+
+if __name__ == '__main__':
+ main()
diff --git a/playbooks/common/openshift-master/scaleup.yml b/playbooks/common/openshift-master/scaleup.yml
index 36b121d1c..52727bc03 100644
--- a/playbooks/common/openshift-master/scaleup.yml
+++ b/playbooks/common/openshift-master/scaleup.yml
@@ -30,10 +30,10 @@
ha: "{{ openshift_master_ha | default(groups.oo_masters | length > 1) }}"
master_count: "{{ openshift_master_count | default(groups.oo_masters | length) }}"
- name: Update master count
- lineinfile:
+ modify_yaml:
dest: "{{ openshift.common.config_base}}/master/master-config.yaml"
- regexp: '^ masterCount:.*$'
- line: " masterCount: {{ openshift.master.master_count }}"
+ yaml_key: 'kubernetesMasterConfig.masterCount'
+ yaml_value: "{{ openshift.master.master_count }}"
notify:
- restart master api
- restart master controllers