diff options
Diffstat (limited to 'roles/lib_openshift/src/lib/base.py')
| -rw-r--r-- | roles/lib_openshift/src/lib/base.py | 608 |
1 files changed, 608 insertions, 0 deletions
diff --git a/roles/lib_openshift/src/lib/base.py b/roles/lib_openshift/src/lib/base.py new file mode 100644 index 000000000..1fb32164e --- /dev/null +++ b/roles/lib_openshift/src/lib/base.py @@ -0,0 +1,608 @@ +# pylint: skip-file +# flake8: noqa +# pylint: disable=too-many-lines +# noqa: E301,E302,E303,T001 + + +class OpenShiftCLIError(Exception): + '''Exception class for openshiftcli''' + pass + + +ADDITIONAL_PATH_LOOKUPS = ['/usr/local/bin', os.path.expanduser('~/bin')] + + +def locate_oc_binary(): + ''' Find and return oc binary file ''' + # https://github.com/openshift/openshift-ansible/issues/3410 + # oc can be in /usr/local/bin in some cases, but that may not + # be in $PATH due to ansible/sudo + paths = os.environ.get("PATH", os.defpath).split(os.pathsep) + ADDITIONAL_PATH_LOOKUPS + + oc_binary = 'oc' + + # Use shutil.which if it is available, otherwise fallback to a naive path search + try: + which_result = shutil.which(oc_binary, path=os.pathsep.join(paths)) + if which_result is not None: + oc_binary = which_result + except AttributeError: + for path in paths: + if os.path.exists(os.path.join(path, oc_binary)): + oc_binary = os.path.join(path, oc_binary) + break + + return oc_binary + + +# pylint: disable=too-few-public-methods +class OpenShiftCLI(object): + ''' Class to wrap the command line tools ''' + def __init__(self, + namespace, + kubeconfig='/etc/origin/master/admin.kubeconfig', + verbose=False, + all_namespaces=False): + ''' Constructor for OpenshiftCLI ''' + self.namespace = namespace + self.verbose = verbose + self.kubeconfig = Utils.create_tmpfile_copy(kubeconfig) + self.all_namespaces = all_namespaces + self.oc_binary = locate_oc_binary() + + # Pylint allows only 5 arguments to be passed. + # pylint: disable=too-many-arguments + def _replace_content(self, resource, rname, content, force=False, sep='.'): + ''' replace the current object with the content ''' + res = self._get(resource, rname) + if not res['results']: + return res + + fname = Utils.create_tmpfile(rname + '-') + + yed = Yedit(fname, res['results'][0], separator=sep) + changes = [] + for key, value in content.items(): + changes.append(yed.put(key, value)) + + if any([change[0] for change in changes]): + yed.write() + + atexit.register(Utils.cleanup, [fname]) + + return self._replace(fname, force) + + return {'returncode': 0, 'updated': False} + + def _replace(self, fname, force=False): + '''replace the current object with oc replace''' + # We are removing the 'resourceVersion' to handle + # a race condition when modifying oc objects + yed = Yedit(fname) + results = yed.delete('metadata.resourceVersion') + if results[0]: + yed.write() + + cmd = ['replace', '-f', fname] + if force: + cmd.append('--force') + return self.openshift_cmd(cmd) + + def _create_from_content(self, rname, content): + '''create a temporary file and then call oc create on it''' + fname = Utils.create_tmpfile(rname + '-') + yed = Yedit(fname, content=content) + yed.write() + + atexit.register(Utils.cleanup, [fname]) + + return self._create(fname) + + def _create(self, fname): + '''call oc create on a filename''' + return self.openshift_cmd(['create', '-f', fname]) + + def _delete(self, resource, name=None, selector=None): + '''call oc delete on a resource''' + cmd = ['delete', resource] + if selector is not None: + cmd.append('--selector={}'.format(selector)) + elif name is not None: + cmd.append(name) + else: + raise OpenShiftCLIError('Either name or selector is required when calling delete.') + + return self.openshift_cmd(cmd) + + def _process(self, template_name, create=False, params=None, template_data=None): # noqa: E501 + '''process a template + + template_name: the name of the template to process + create: whether to send to oc create after processing + params: the parameters for the template + template_data: the incoming template's data; instead of a file + ''' + cmd = ['process'] + if template_data: + cmd.extend(['-f', '-']) + else: + cmd.append(template_name) + if params: + param_str = ["{}={}".format(key, str(value).replace("'", r'"')) for key, value in params.items()] + cmd.append('-v') + cmd.extend(param_str) + + results = self.openshift_cmd(cmd, output=True, input_data=template_data) + + if results['returncode'] != 0 or not create: + return results + + fname = Utils.create_tmpfile(template_name + '-') + yed = Yedit(fname, results['results']) + yed.write() + + atexit.register(Utils.cleanup, [fname]) + + return self.openshift_cmd(['create', '-f', fname]) + + def _get(self, resource, name=None, selector=None): + '''return a resource by name ''' + cmd = ['get', resource] + if selector is not None: + cmd.append('--selector={}'.format(selector)) + elif name is not None: + cmd.append(name) + + cmd.extend(['-o', 'json']) + + rval = self.openshift_cmd(cmd, output=True) + + # Ensure results are retuned in an array + if 'items' in rval: + rval['results'] = rval['items'] + elif not isinstance(rval['results'], list): + rval['results'] = [rval['results']] + + return rval + + def _schedulable(self, node=None, selector=None, schedulable=True): + ''' perform oadm manage-node scheduable ''' + cmd = ['manage-node'] + if node: + cmd.extend(node) + else: + cmd.append('--selector={}'.format(selector)) + + cmd.append('--schedulable={}'.format(schedulable)) + + return self.openshift_cmd(cmd, oadm=True, output=True, output_type='raw') # noqa: E501 + + def _list_pods(self, node=None, selector=None, pod_selector=None): + ''' perform oadm list pods + + node: the node in which to list pods + selector: the label selector filter if provided + pod_selector: the pod selector filter if provided + ''' + cmd = ['manage-node'] + if node: + cmd.extend(node) + else: + cmd.append('--selector={}'.format(selector)) + + if pod_selector: + cmd.append('--pod-selector={}'.format(pod_selector)) + + cmd.extend(['--list-pods', '-o', 'json']) + + return self.openshift_cmd(cmd, oadm=True, output=True, output_type='raw') + + # pylint: disable=too-many-arguments + def _evacuate(self, node=None, selector=None, pod_selector=None, dry_run=False, grace_period=None, force=False): + ''' perform oadm manage-node evacuate ''' + cmd = ['manage-node'] + if node: + cmd.extend(node) + else: + cmd.append('--selector={}'.format(selector)) + + if dry_run: + cmd.append('--dry-run') + + if pod_selector: + cmd.append('--pod-selector={}'.format(pod_selector)) + + if grace_period: + cmd.append('--grace-period={}'.format(int(grace_period))) + + if force: + cmd.append('--force') + + cmd.append('--evacuate') + + return self.openshift_cmd(cmd, oadm=True, output=True, output_type='raw') + + def _version(self): + ''' return the openshift version''' + return self.openshift_cmd(['version'], output=True, output_type='raw') + + def _import_image(self, url=None, name=None, tag=None): + ''' perform image import ''' + cmd = ['import-image'] + + image = '{0}'.format(name) + if tag: + image += ':{0}'.format(tag) + + cmd.append(image) + + if url: + cmd.append('--from={0}/{1}'.format(url, image)) + + cmd.append('-n{0}'.format(self.namespace)) + + cmd.append('--confirm') + return self.openshift_cmd(cmd) + + def _run(self, cmds, input_data): + ''' Actually executes the command. This makes mocking easier. ''' + curr_env = os.environ.copy() + curr_env.update({'KUBECONFIG': self.kubeconfig}) + proc = subprocess.Popen(cmds, + stdin=subprocess.PIPE, + stdout=subprocess.PIPE, + stderr=subprocess.PIPE, + env=curr_env) + + stdout, stderr = proc.communicate(input_data) + + return proc.returncode, stdout.decode('utf-8'), stderr.decode('utf-8') + + # pylint: disable=too-many-arguments,too-many-branches + def openshift_cmd(self, cmd, oadm=False, output=False, output_type='json', input_data=None): + '''Base command for oc ''' + cmds = [self.oc_binary] + + if oadm: + cmds.append('adm') + + cmds.extend(cmd) + + if self.all_namespaces: + cmds.extend(['--all-namespaces']) + elif self.namespace is not None and self.namespace.lower() not in ['none', 'emtpy']: # E501 + cmds.extend(['-n', self.namespace]) + + if self.verbose: + print(' '.join(cmds)) + + try: + returncode, stdout, stderr = self._run(cmds, input_data) + except OSError as ex: + returncode, stdout, stderr = 1, '', 'Failed to execute {}: {}'.format(subprocess.list2cmdline(cmds), ex) + + rval = {"returncode": returncode, + "cmd": ' '.join(cmds)} + + if output_type == 'json': + rval['results'] = {} + if output and stdout: + try: + rval['results'] = json.loads(stdout) + except ValueError as verr: + if "No JSON object could be decoded" in verr.args: + rval['err'] = verr.args + elif output_type == 'raw': + rval['results'] = stdout if output else '' + + if self.verbose: + print("STDOUT: {0}".format(stdout)) + print("STDERR: {0}".format(stderr)) + + if 'err' in rval or returncode != 0: + rval.update({"stderr": stderr, + "stdout": stdout}) + + return rval + + +class Utils(object): + ''' utilities for openshiftcli modules ''' + + @staticmethod + def _write(filename, contents): + ''' Actually write the file contents to disk. This helps with mocking. ''' + + with open(filename, 'w') as sfd: + sfd.write(contents) + + @staticmethod + def create_tmp_file_from_contents(rname, data, ftype='yaml'): + ''' create a file in tmp with name and contents''' + + tmp = Utils.create_tmpfile(prefix=rname) + + if ftype == 'yaml': + # AUDIT:no-member makes sense here due to ruamel.YAML/PyYAML usage + # pylint: disable=no-member + if hasattr(yaml, 'RoundTripDumper'): + Utils._write(tmp, yaml.dump(data, Dumper=yaml.RoundTripDumper)) + else: + Utils._write(tmp, yaml.safe_dump(data, default_flow_style=False)) + + elif ftype == 'json': + Utils._write(tmp, json.dumps(data)) + else: + Utils._write(tmp, data) + + # Register cleanup when module is done + atexit.register(Utils.cleanup, [tmp]) + return tmp + + @staticmethod + def create_tmpfile_copy(inc_file): + '''create a temporary copy of a file''' + tmpfile = Utils.create_tmpfile('lib_openshift-') + Utils._write(tmpfile, open(inc_file).read()) + + # Cleanup the tmpfile + atexit.register(Utils.cleanup, [tmpfile]) + + return tmpfile + + @staticmethod + def create_tmpfile(prefix='tmp'): + ''' Generates and returns a temporary file name ''' + + with tempfile.NamedTemporaryFile(prefix=prefix, delete=False) as tmp: + return tmp.name + + @staticmethod + def create_tmp_files_from_contents(content, content_type=None): + '''Turn an array of dict: filename, content into a files array''' + if not isinstance(content, list): + content = [content] + files = [] + for item in content: + path = Utils.create_tmp_file_from_contents(item['path'] + '-', + item['data'], + ftype=content_type) + files.append({'name': os.path.basename(item['path']), + 'path': path}) + 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: + if 'metadata' in result 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': + # AUDIT:no-member makes sense here due to ruamel.YAML/PyYAML usage + # pylint: disable=no-member + if hasattr(yaml, 'RoundTripLoader'): + contents = yaml.load(contents, yaml.RoundTripLoader) + else: + contents = yaml.safe_load(contents) + elif sfile_type == 'json': + contents = json.loads(contents) + + return contents + + @staticmethod + def filter_versions(stdout): + ''' filter the oc version output ''' + + version_dict = {} + version_search = ['oc', 'openshift', 'kubernetes'] + + for line in stdout.strip().split('\n'): + for term in version_search: + if not line: + continue + if line.startswith(term): + version_dict[term] = line.split()[-1] + + # horrible hack to get openshift version in Openshift 3.2 + # By default "oc version in 3.2 does not return an "openshift" version + if "openshift" not in version_dict: + version_dict["openshift"] = version_dict["oc"] + + return version_dict + + @staticmethod + def add_custom_versions(versions): + ''' create custom versions strings ''' + + versions_dict = {} + + for tech, version in versions.items(): + # clean up "-" from version + if "-" in version: + version = version.split("-")[0] + + if version.startswith('v'): + versions_dict[tech + '_numeric'] = version[1:].split('+')[0] + # "v3.3.0.33" is what we have, we want "3.3" + versions_dict[tech + '_short'] = version[1:4] + + return versions_dict + + @staticmethod + def openshift_installed(): + ''' check if openshift is installed ''' + import rpm + + transaction_set = rpm.TransactionSet() + rpmquery = transaction_set.dbMatch("name", "atomic-openshift") + + return rpmquery.count() > 0 + + # Disabling too-many-branches. This is a yaml dictionary comparison function + # pylint: disable=too-many-branches,too-many-return-statements,too-many-statements + @staticmethod + def check_def_equal(user_def, result_def, skip_keys=None, 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 = ['metadata', 'status'] + if skip_keys: + skip.extend(skip_keys) + + for key, value in result_def.items(): + if key in skip: + continue + + # Both are lists + if isinstance(value, list): + if key not in user_def: + if debug: + print('User data does not have key [%s]' % key) + print('User data: %s' % user_def) + return False + + if not isinstance(user_def[key], list): + if debug: + print('user_def[key] is not a list key=[%s] user_def[key]=%s' % (key, user_def[key])) + return False + + if len(user_def[key]) != len(value): + if debug: + print("List lengths are not equal.") + print("key=[%s]: user_def[%s] != value[%s]" % (key, len(user_def[key]), len(value))) + print("user_def: %s" % user_def[key]) + print("value: %s" % value) + return False + + for values in zip(user_def[key], value): + if isinstance(values[0], dict) and isinstance(values[1], dict): + if debug: + print('sending list - list') + print(type(values[0])) + print(type(values[1])) + result = Utils.check_def_equal(values[0], values[1], skip_keys=skip_keys, debug=debug) + if not result: + print('list compare returned false') + return False + + elif value != user_def[key]: + if debug: + print('value should be identical') + print(user_def[key]) + print(value) + return False + + # recurse on a dictionary + elif isinstance(value, dict): + if key not in user_def: + if debug: + print("user_def does not have key [%s]" % key) + return False + 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("keys are not equal in dict") + print(user_values) + print(api_values) + return False + + result = Utils.check_def_equal(user_def[key], value, skip_keys=skip_keys, debug=debug) + if not result: + if debug: + print("dict returned false") + print(result) + return False + + # Verify each key, value pair is the same + else: + if key not in user_def or value != user_def[key]: + if debug: + print("value not equal; user_def does not have key") + print(key) + print(value) + if key in user_def: + print(user_def[key]) + return False + + if debug: + print('returning true') + return True + +class OpenShiftCLIConfig(object): + '''Generic Config''' + def __init__(self, rname, namespace, kubeconfig, options): + self.kubeconfig = kubeconfig + self.name = rname + self.namespace = namespace + self._options = options + + @property + def config_options(self): + ''' return config options ''' + return self._options + + def to_option_list(self, ascommalist=''): + '''return all options as a string + if ascommalist is set to the name of a key, and + the value of that key is a dict, format the dict + as a list of comma delimited key=value pairs''' + return self.stringify(ascommalist) + + def stringify(self, ascommalist=''): + ''' return the options hash as cli params in a string + if ascommalist is set to the name of a key, and + the value of that key is a dict, format the dict + as a list of comma delimited key=value pairs ''' + rval = [] + for key in sorted(self.config_options.keys()): + data = self.config_options[key] + if data['include'] \ + and (data['value'] is not None or isinstance(data['value'], int)): + if key == ascommalist: + val = ','.join(['{}={}'.format(kk, vv) for kk, vv in sorted(data['value'].items())]) + else: + val = data['value'] + rval.append('--{}={}'.format(key.replace('_', '-'), val)) + + return rval + |