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360 lines
10 KiB
360 lines
10 KiB
#!/usr/bin/python
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ANSIBLE_METADATA = {
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'metadata_version': '1.1',
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'status': ['preview'],
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'supported_by': 'community'
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}
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DOCUMENTATION = '''
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---
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module: jsonconfig
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short_description: Ensure a particular configuration is added to a json-formatted configuration file
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version_added: "2.4"
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description:
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- This module will add configuration to a json-formatted configuration file.
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options:
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dest:
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description:
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- The file to modify.
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required: true
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aliases: [ name, destfile ]
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json:
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description:
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- The configuration in json format to apply.
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required: false
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default: '{}'
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merge:
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description:
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- Used with C(state=present). If specified, it will merge the configuration. Othwerwise
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the configuration will be overwritten.
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required: false
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choices: [ "yes", "no" ]
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default: "yes"
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state:
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description:
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- Whether the configuration should be there or not.
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required: false
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choices: [ present, absent ]
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default: "present"
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create:
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description:
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- Used with C(state=present). If specified, the file will be created
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if it does not already exist. By default it will fail if the file
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is missing.
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required: false
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choices: [ "yes", "no" ]
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default: "no"
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backup:
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description:
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- Create a backup file including the timestamp information so you can
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get the original file back if you somehow clobbered it incorrectly.
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required: false
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choices: [ "yes", "no" ]
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default: "no"
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others:
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description:
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- All arguments accepted by the M(file) module also work here.
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required: false
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extends_documentation_fragment:
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- files
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- validate
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author:
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- "Greg Szabo (@greg-szabo)"
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'''
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EXAMPLES = '''
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# Add a new section to a json file
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- name: Add comment section
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jsonconfig:
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dest: /etc/something.json
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json: '{ "comment": { "comment1": "mycomment" } }'
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# Rewrite a json file with the configuration
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- name: Create or overwrite config.json
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jsonconfig:
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dest: /etc/config.json
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json: '{ "regedit": { "freshfile": true } }'
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merge: no
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create: yes
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'''
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RETURN = '''
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changed:
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description: True if the configuration changed.
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type: bool
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msg:
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description: Description of the change
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type: str
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'''
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from ansible.module_utils.basic import AnsibleModule
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from ansible.module_utils.six import b
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from ansible.module_utils._text import to_bytes, to_native
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import tempfile
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import json
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import copy
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import os
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def write_changes(module, b_lines, dest):
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tmpfd, tmpfile = tempfile.mkstemp()
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f = os.fdopen(tmpfd, 'wb')
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f.writelines(b_lines)
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f.close()
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validate = module.params.get('validate', None)
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valid = not validate
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if validate:
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if "%s" not in validate:
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module.fail_json(msg="validate must contain %%s: %s" % (validate))
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(rc, out, err) = module.run_command(to_bytes(validate % tmpfile, errors='surrogate_or_strict'))
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valid = rc == 0
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if rc != 0:
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module.fail_json(msg='failed to validate: '
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'rc:%s error:%s' % (rc, err))
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if valid:
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module.atomic_move(tmpfile,
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to_native(os.path.realpath(to_bytes(dest, errors='surrogate_or_strict')), errors='surrogate_or_strict'),
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unsafe_writes=module.params['unsafe_writes'])
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def check_file_attrs(module, changed, message, diff):
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file_args = module.load_file_common_arguments(module.params)
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if module.set_fs_attributes_if_different(file_args, False, diff=diff):
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if changed:
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message += " and "
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changed = True
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message += "ownership, perms or SE linux context changed"
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return message, changed
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#Merge dict d2 into dict d1 and return a new object
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def deepmerge(d1, d2):
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if d1 is None:
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return copy.deepcopy(d2)
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if d2 is None:
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return copy.deepcopy(d1)
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if d1 == d2:
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return copy.deepcopy(d1)
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if isinstance(d1, dict) and isinstance(d2, dict):
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result={}
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for key in set(d1.keys()+d2.keys()):
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da = db = None
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if key in d1:
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da = d1[key]
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if key in d2:
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db = d2[key]
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result[key] = deepmerge(da, db)
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return result
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else:
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return copy.deepcopy(d2)
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#Remove dict d2 from dict d1 and return a new object
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def deepdiff(d1, d2):
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if d1 is None or d2 is None:
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return None
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if d1 == d2:
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return None
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if isinstance(d1, dict) and isinstance(d2, dict):
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result = {}
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for key in d1.keys():
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if key in d2:
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dd = deepdiff(d1[key],d2[key])
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if dd is not None:
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result[key] = dd
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else:
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result[key] = d1[key]
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return result
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else:
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return None
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def present(module, dest, conf, merge, create, backup):
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diff = {'before': '',
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'after': '',
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'before_header': '%s (content)' % dest,
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'after_header': '%s (content)' % dest}
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b_dest = to_bytes(dest, errors='surrogate_or_strict')
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if not os.path.exists(b_dest):
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if not create:
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module.fail_json(rc=257, msg='Destination %s does not exist !' % dest)
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b_destpath = os.path.dirname(b_dest)
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if not os.path.exists(b_destpath) and not module.check_mode:
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os.makedirs(b_destpath)
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b_lines = []
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else:
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f = open(b_dest, 'rb')
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b_lines = f.readlines()
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f.close()
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lines = to_native(b('').join(b_lines))
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if module._diff:
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diff['before'] = lines
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b_conf = to_bytes(conf, errors='surrogate_or_strict')
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jsonconfig = json.loads(lines)
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config = eval(b_conf)
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if not isinstance(config, dict):
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module.fail_json(msg="Invalid value in json parameter: {0}".format(config))
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b_lines_new = b_lines
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msg = ''
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changed = False
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if not merge:
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if jsonconfig != config:
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b_lines_new = to_bytes(json.dumps(config, sort_keys=True, indent=4, separators=(',', ': ')))
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msg = 'config overwritten'
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changed = True
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else:
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mergedconfig = deepmerge(jsonconfig,config)
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if jsonconfig != mergedconfig:
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b_lines_new = to_bytes(json.dumps(mergedconfig, sort_keys=True, indent=4, separators=(',', ': ')))
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msg = 'config merged'
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changed = True
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if module._diff:
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diff['after'] = to_native(b('').join(b_lines_new))
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backupdest = ""
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if changed and not module.check_mode:
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if backup and os.path.exists(b_dest):
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backupdest = module.backup_local(dest)
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write_changes(module, b_lines_new, dest)
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if module.check_mode and not os.path.exists(b_dest):
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module.exit_json(changed=changed, msg=msg, backup=backupdest, diff=diff)
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attr_diff = {}
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msg, changed = check_file_attrs(module, changed, msg, attr_diff)
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attr_diff['before_header'] = '%s (file attributes)' % dest
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attr_diff['after_header'] = '%s (file attributes)' % dest
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difflist = [diff, attr_diff]
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module.exit_json(changed=changed, msg=msg, backup=backupdest, diff=difflist)
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def absent(module, dest, conf, backup):
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b_dest = to_bytes(dest, errors='surrogate_or_strict')
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if not os.path.exists(b_dest):
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module.exit_json(changed=False, msg="file not present")
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msg = ''
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diff = {'before': '',
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'after': '',
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'before_header': '%s (content)' % dest,
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'after_header': '%s (content)' % dest}
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f = open(b_dest, 'rb')
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b_lines = f.readlines()
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f.close()
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lines = to_native(b('').join(b_lines))
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b_conf = to_bytes(conf, errors='surrogate_or_strict')
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lines = to_native(b('').join(b_lines))
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jsonconfig = json.loads(lines)
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config = eval(b_conf)
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if not isinstance(config, dict):
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module.fail_json(msg="Invalid value in json parameter: {0}".format(config))
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if module._diff:
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diff['before'] = to_native(b('').join(b_lines))
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b_lines_new = b_lines
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msg = ''
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changed = False
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diffconfig = deepdiff(jsonconfig,config)
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if diffconfig is None:
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diffconfig = {}
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if jsonconfig != diffconfig:
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b_lines_new = to_bytes(json.dumps(diffconfig, sort_keys=True, indent=4, separators=(',', ': ')))
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msg = 'config removed'
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changed = True
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if module._diff:
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diff['after'] = to_native(b('').join(b_lines_new))
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backupdest = ""
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if changed and not module.check_mode:
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if backup:
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backupdest = module.backup_local(dest)
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write_changes(module, b_lines_new, dest)
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attr_diff = {}
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msg, changed = check_file_attrs(module, changed, msg, attr_diff)
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attr_diff['before_header'] = '%s (file attributes)' % dest
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attr_diff['after_header'] = '%s (file attributes)' % dest
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difflist = [diff, attr_diff]
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module.exit_json(changed=changed, msg=msg, backup=backupdest, diff=difflist)
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def main():
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# define the available arguments/parameters that a user can pass to
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# the module
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module_args = dict(
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dest=dict(type='str', required=True),
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json=dict(default=None, required=True),
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merge=dict(type='bool', default=True),
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state=dict(default='present', choices=['absent', 'present']),
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create=dict(type='bool', default=False),
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backup=dict(type='bool', default=False),
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validate=dict(default=None, type='str')
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)
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# the AnsibleModule object will be our abstraction working with Ansible
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# this includes instantiation, a couple of common attr would be the
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# args/params passed to the execution, as well as if the module
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# supports check mode
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module = AnsibleModule(
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argument_spec=module_args,
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add_file_common_args=True,
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supports_check_mode=True
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)
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params = module.params
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create = params['create']
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merge = params['merge']
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backup = params['backup']
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dest = params['dest']
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b_dest = to_bytes(dest, errors='surrogate_or_strict')
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if os.path.isdir(b_dest):
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module.fail_json(rc=256, msg='Destination %s is a directory !' % dest)
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conf = params['json']
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if params['state'] == 'present':
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present(module, dest, conf, merge, create, backup)
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else:
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absent(module, dest, conf, backup)
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if __name__ == '__main__':
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main()
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