diff options
Diffstat (limited to 'roles/lib_openshift_api/library/oc_service.py')
| -rw-r--r-- | roles/lib_openshift_api/library/oc_service.py | 356 |
1 files changed, 356 insertions, 0 deletions
diff --git a/roles/lib_openshift_api/library/oc_service.py b/roles/lib_openshift_api/library/oc_service.py new file mode 100644 index 000000000..48281f254 --- /dev/null +++ b/roles/lib_openshift_api/library/oc_service.py @@ -0,0 +1,356 @@ +#!/usr/bin/env python +''' + OpenShiftCLI class that wraps the oc commands in a subprocess +''' +import atexit +import json +import os +import shutil +import subprocess +import yaml + +# The base class is here to share methods. +# Currently there is only 1 but will grow in the future. +# pylint: disable=too-few-public-methods +class OpenShiftCLI(object): + ''' Class to wrap the oc command line tools ''' + def __init__(self, + namespace, + kubeconfig='/etc/origin/master/admin.kubeconfig', + verbose=False): + ''' Constructor for OpenshiftOC ''' + self.namespace = namespace + self.verbose = verbose + self.kubeconfig = kubeconfig + + def oc_cmd(self, cmd, output=False): + '''Base command for oc ''' + #cmds = ['/usr/bin/oc', '--config', self.kubeconfig] + cmds = ['/usr/bin/oc'] + cmds.extend(cmd) + + results = '' + + if self.verbose: + print ' '.join(cmds) + + proc = subprocess.Popen(cmds, + stdout=subprocess.PIPE, + stderr=subprocess.PIPE, + env={'KUBECONFIG': self.kubeconfig}) + proc.wait() + if proc.returncode == 0: + if output: + try: + results = json.loads(proc.stdout.read()) + except ValueError as err: + if "No JSON object could be decoded" in err.message: + results = err.message + + if self.verbose: + print proc.stderr.read() + print results + print + + return {"returncode": proc.returncode, "results": results} + + return {"returncode": proc.returncode, + "stderr": proc.stderr.read(), + "stdout": proc.stdout.read(), + "results": {} + } + +class Utils(object): + ''' utilities for openshiftcli modules ''' + @staticmethod + def create_files_from_contents(data): + '''Turn an array of dict: filename, content into a files array''' + files = [] + + for sfile in data: + path = os.path.join('/tmp', sfile['path']) + with open(path, 'w') as fds: + fds.write(sfile['content']) + files.append(path) + + # Register cleanup when module is done + atexit.register(Utils.cleanup, files) + return files + + + @staticmethod + def cleanup(files): + '''Clean up on exit ''' + for sfile in files: + if os.path.exists(sfile): + if os.path.isdir(sfile): + shutil.rmtree(sfile) + elif os.path.isfile(sfile): + os.remove(sfile) + + + @staticmethod + def exists(results, _name): + ''' Check to see if the results include the name ''' + if not results: + return False + + + if Utils.find_result(results, _name): + return True + + return False + + @staticmethod + def find_result(results, _name): + ''' Find the specified result by name''' + rval = None + for result in results: + #print "%s == %s" % (result['metadata']['name'], name) + if result.has_key('metadata') and result['metadata']['name'] == _name: + rval = result + break + + return rval + + @staticmethod + def get_resource_file(sfile, sfile_type='yaml'): + ''' return the service file ''' + contents = None + with open(sfile) as sfd: + contents = sfd.read() + + if sfile_type == 'yaml': + contents = yaml.load(contents) + elif sfile_type == 'json': + contents = json.loads(contents) + + return contents + + # Disabling too-many-branches. This is a yaml dictionary comparison function + # pylint: disable=too-many-branches,too-many-return-statements + @staticmethod + def check_def_equal(user_def, result_def, debug=False): + ''' Given a user defined definition, compare it with the results given back by our query. ''' + + # Currently these values are autogenerated and we do not need to check them + skip = ['creationTimestamp', 'selfLink', 'resourceVersion', 'uid', 'namespace'] + + for key, value in result_def.items(): + if key in skip: + continue + + # Both are lists + if isinstance(value, list): + if not isinstance(user_def[key], list): + return False + + # lists should be identical + if value != user_def[key]: + return False + + # recurse on a dictionary + elif isinstance(value, dict): + if not isinstance(user_def[key], dict): + if debug: + print "dict returned false not instance of dict" + return False + + # before passing ensure keys match + api_values = set(value.keys()) - set(skip) + user_values = set(user_def[key].keys()) - set(skip) + if api_values != user_values: + if debug: + print api_values + print user_values + print "keys are not equal in dict" + return False + + result = Utils.check_def_equal(user_def[key], value) + if not result: + if debug: + print "dict returned false" + return False + + # Verify each key, value pair is the same + else: + if not user_def.has_key(key) or value != user_def[key]: + if debug: + print "value not equal; user_def does not have key" + print value + print user_def[key] + return False + + return True + +class Service(OpenShiftCLI): + ''' Class to wrap the oc command line tools + ''' + def __init__(self, + namespace, + service_name=None, + kubeconfig='/etc/origin/master/admin.kubeconfig', + verbose=False): + ''' Constructor for OpenshiftOC ''' + super(Service, OpenShiftCLI).__init__(namespace, kubeconfig) + self.namespace = namespace + self.name = service_name + self.verbose = verbose + self.kubeconfig = kubeconfig + + def create_service(self, sfile): + ''' create the service ''' + return self.oc_cmd(['create', '-f', sfile]) + + def get_services(self): + '''return a secret by name ''' + cmd = ['get', 'services', '-o', 'json', '-n', self.namespace] + if self.name: + cmd.append(self.name) + + rval = self.oc_cmd(cmd, output=True) + + # Ensure results are retuned in an array + if rval.has_key('items'): + rval['results'] = rval['items'] + elif not isinstance(rval['results'], list): + rval['results'] = [rval['results']] + + return rval + + def delete_service(self): + '''return all pods ''' + return self.oc_cmd(['delete', 'service', self.name, '-n', self.namespace]) + + def update_service(self, sfile, force=False): + '''run update service + + This receives a list of file names and converts it into a secret. + The secret is then written to disk and passed into the `oc replace` command. + ''' + + cmd = ['replace', '-f', sfile] + if force: + cmd = ['replace', '--force', '-f', sfile] + + atexit.register(Utils.cleanup, [sfile]) + + return self.oc_cmd(cmd) + + +# pylint: disable=too-many-branches +def main(): + ''' + ansible oc module for services + ''' + + module = AnsibleModule( + argument_spec=dict( + kubeconfig=dict(default='/etc/origin/master/admin.kubeconfig', type='str'), + state=dict(default='present', type='str', + choices=['present', 'absent', 'list']), + debug=dict(default=False, type='bool'), + namespace=dict(default='default', type='str'), + name=dict(default=None, type='str'), + service_file=dict(default=None, type='str'), + service_file_type=dict(default=None, type='str'), + delete_after=dict(default=False, type='bool'), + contents=dict(default=None, type='list'), + force=dict(default=False, type='bool'), + ), + mutually_exclusive=[["contents", "service_file"]], + + supports_check_mode=True, + ) + occmd = Service(module.params['namespace'], + module.params['name'], + kubeconfig=module.params['kubeconfig'], + verbose=module.params['debug']) + + state = module.params['state'] + + api_rval = occmd.get_services() + + ##### + # Get + ##### + if state == 'list': + module.exit_json(changed=False, results=api_rval['results'], state="list") + + if not module.params['name']: + module.fail_json(msg='Please specify a name when state is absent|present.') + ######## + # Delete + ######## + if state == 'absent': + if not Utils.exists(api_rval['results'], module.params['name']): + module.exit_json(changed=False, state="absent") + + if module.check_mode: + module.exit_json(change=False, msg='Would have performed a delete.') + + api_rval = occmd.delete_service() + module.exit_json(changed=True, results=api_rval, state="absent") + + + if state == 'present': + if module.params['service_file']: + sfile = module.params['service_file'] + elif module.params['contents']: + sfile = Utils.create_files_from_contents(module.params['contents']) + else: + module.fail_json(msg='Either specify files or contents.') + + ######## + # Create + ######## + if not Utils.exists(api_rval['results'], module.params['name']): + + if module.check_mode: + module.exit_json(change=False, msg='Would have performed a create.') + + api_rval = occmd.create_service(sfile) + + # Remove files + if sfile and module.params['delete_after']: + Utils.cleanup([sfile]) + + module.exit_json(changed=True, results=api_rval, state="present") + + ######## + # Update + ######## + sfile_contents = Utils.get_resource_file(sfile, module.params['service_file_type']) + if Utils.check_def_equal(sfile_contents, api_rval['results'][0]): + + # Remove files + if module.params['service_file'] and module.params['delete_after']: + Utils.cleanup([sfile]) + + module.exit_json(changed=False, results=api_rval['results'][0], state="present") + + if module.check_mode: + module.exit_json(change=False, msg='Would have performed an update.') + + api_rval = occmd.update_service(sfile, force=module.params['force']) + + # Remove files + if sfile and module.params['delete_after']: + Utils.cleanup([sfile]) + + if api_rval['returncode'] != 0: + module.fail_json(msg=api_rval) + + + module.exit_json(changed=True, results=api_rval, state="present") + + module.exit_json(failed=True, + changed=False, + results='Unknown state passed. %s' % state, + state="unknown") + +# pylint: disable=redefined-builtin, unused-wildcard-import, wildcard-import, locally-disabled +# import module snippets. This are required +from ansible.module_utils.basic import * + +main() |