import json import os import shutil from collections import defaultdict from hashlib import md5 from socket import gethostname import yaml from django.conf import settings from django.utils import timezone from django.utils.translation import gettext as _ from sshtunnel import SSHTunnelForwarder, BaseSSHTunnelForwarderError from assets.automations.methods import platform_automation_methods from common.utils import get_logger, lazyproperty, is_openssh_format_key, ssh_pubkey_gen from ops.ansible import JMSInventory, PlaybookRunner, DefaultCallback logger = get_logger(__name__) class PlaybookCallback(DefaultCallback): def playbook_on_stats(self, event_data, **kwargs): super().playbook_on_stats(event_data, **kwargs) class BasePlaybookManager: bulk_size = 100 ansible_account_policy = 'privileged_first' ansible_account_prefer = 'root,Administrator' def __init__(self, execution): self.execution = execution self.method_id_meta_mapper = { method['id']: method for method in self.platform_automation_methods if method['method'] == self.__class__.method_type() } # 根据执行方式就行分组, 不同资产的改密、推送等操作可能会使用不同的执行方式 # 然后根据执行方式分组, 再根据 bulk_size 分组, 生成不同的 playbook # 避免一个 playbook 中包含太多的主机 self.method_hosts_mapper = defaultdict(list) self.playbooks = [] self.gateway_servers = dict() params = self.execution.snapshot.get('params') self.params = params or {} def get_params(self, automation, method_type): method_attr = '{}_method'.format(method_type) method_params = '{}_params'.format(method_type) method_id = getattr(automation, method_attr) automation_params = getattr(automation, method_params) serializer = self.method_id_meta_mapper[method_id]['params_serializer'] if serializer is None: return {} data = self.params.get(method_id) if not data: data = automation_params.get(method_id, {}) params = serializer(data).data return { field_name: automation_params.get(field_name, '') if not params[field_name] else params[field_name] for field_name in params } @property def platform_automation_methods(self): return platform_automation_methods @classmethod def method_type(cls): raise NotImplementedError def get_assets_group_by_platform(self): return self.execution.all_assets_group_by_platform() def prepare_runtime_dir(self): ansible_dir = settings.ANSIBLE_DIR task_name = self.execution.snapshot['name'] dir_name = '{}_{}'.format(task_name.replace(' ', '_'), self.execution.id) path = os.path.join( ansible_dir, 'automations', self.execution.snapshot['type'], dir_name, timezone.now().strftime('%Y%m%d_%H%M%S') ) if not os.path.exists(path): os.makedirs(path, exist_ok=True, mode=0o755) return path @lazyproperty def runtime_dir(self): path = self.prepare_runtime_dir() if settings.DEBUG_DEV: msg = 'Ansible runtime dir: {}'.format(path) print(msg) return path @staticmethod def write_cert_to_file(filename, content): with open(filename, 'w') as f: f.write(content) return filename def convert_cert_to_file(self, host, path_dir): if not path_dir: return host specific = host.get('jms_asset', {}).get('secret_info', {}) cert_fields = ('ca_cert', 'client_key', 'client_cert') filtered = list(filter(lambda x: specific.get(x), cert_fields)) if not filtered: return host cert_dir = os.path.join(path_dir, 'certs') if not os.path.exists(cert_dir): os.makedirs(cert_dir, 0o700, True) for f in filtered: result = self.write_cert_to_file( os.path.join(cert_dir, f), specific.get(f) ) host['jms_asset']['secret_info'][f] = result return host def host_callback(self, host, automation=None, **kwargs): method_type = self.__class__.method_type() enabled_attr = '{}_enabled'.format(method_type) method_attr = '{}_method'.format(method_type) method_enabled = automation and \ getattr(automation, enabled_attr) and \ getattr(automation, method_attr) and \ getattr(automation, method_attr) in self.method_id_meta_mapper if not method_enabled: host['error'] = _('{} disabled'.format(self.__class__.method_type())) return host host = self.convert_cert_to_file(host, kwargs.get('path_dir')) host['params'] = self.get_params(automation, method_type) return host @staticmethod def generate_public_key(private_key): return ssh_pubkey_gen(private_key=private_key, hostname=gethostname()) @staticmethod def generate_private_key_path(secret, path_dir): key_name = '.' + md5(secret.encode('utf-8')).hexdigest() key_path = os.path.join(path_dir, key_name) if not os.path.exists(key_path): # https://github.com/ansible/ansible-runner/issues/544 # ssh requires OpenSSH format keys to have a full ending newline. # It does not require this for old-style PEM keys. with open(key_path, 'w') as f: f.write(secret) if is_openssh_format_key(secret.encode('utf-8')): f.write("\n") os.chmod(key_path, 0o400) return key_path def generate_inventory(self, platformed_assets, inventory_path): inventory = JMSInventory( assets=platformed_assets, account_prefer=self.ansible_account_prefer, account_policy=self.ansible_account_policy, host_callback=self.host_callback, ) inventory.write_to_file(inventory_path) def generate_playbook(self, platformed_assets, platform, sub_playbook_dir): method_id = getattr(platform.automation, '{}_method'.format(self.__class__.method_type())) method = self.method_id_meta_mapper.get(method_id) if not method: logger.error("Method not found: {}".format(method_id)) return method method_playbook_dir_path = method['dir'] sub_playbook_path = os.path.join(sub_playbook_dir, 'project', 'main.yml') shutil.copytree(method_playbook_dir_path, os.path.dirname(sub_playbook_path)) with open(sub_playbook_path, 'r') as f: plays = yaml.safe_load(f) for play in plays: play['hosts'] = 'all' with open(sub_playbook_path, 'w') as f: yaml.safe_dump(plays, f) return sub_playbook_path def get_runners(self): assets_group_by_platform = self.get_assets_group_by_platform() if settings.DEBUG_DEV: msg = 'Assets group by platform: {}'.format(dict(assets_group_by_platform)) print(msg) runners = [] for platform, assets in assets_group_by_platform.items(): assets_bulked = [assets[i:i + self.bulk_size] for i in range(0, len(assets), self.bulk_size)] for i, _assets in enumerate(assets_bulked, start=1): sub_dir = '{}_{}'.format(platform.name, i) playbook_dir = os.path.join(self.runtime_dir, sub_dir) inventory_path = os.path.join(self.runtime_dir, sub_dir, 'hosts.json') self.generate_inventory(_assets, inventory_path) playbook_path = self.generate_playbook(_assets, platform, playbook_dir) runer = PlaybookRunner( inventory_path, playbook_path, self.runtime_dir, callback=PlaybookCallback(), ) with open(inventory_path, 'r') as f: inventory_data = json.load(f) if not inventory_data['all'].get('hosts'): continue runners.append(runer) return runners def on_host_success(self, host, result): pass def on_host_error(self, host, error, result): print('host error: {} -> {}'.format(host, error)) def on_runner_success(self, runner, cb): summary = cb.summary for state, hosts in summary.items(): for host in hosts: result = cb.host_results.get(host) if state == 'ok': self.on_host_success(host, result) elif state == 'skipped': pass else: error = hosts.get(host) self.on_host_error(host, error, result) def on_runner_failed(self, runner, e): print("Runner failed: {} {}".format(e, self)) @staticmethod def file_to_json(path): with open(path, 'r') as f: d = json.load(f) return d @staticmethod def json_dumps(data): return json.dumps(data, indent=4, sort_keys=True) @staticmethod def json_to_file(path, data): with open(path, 'w') as f: json.dump(data, f, indent=4, sort_keys=True) def local_gateway_prepare(self, runner): info = self.file_to_json(runner.inventory) servers, not_valid = [], [] for k, host in info['all']['hosts'].items(): jms_asset, jms_gateway = host['jms_asset'], host.get('gateway') if not jms_gateway: continue server = SSHTunnelForwarder( (jms_gateway['address'], jms_gateway['port']), ssh_username=jms_gateway['username'], ssh_password=jms_gateway['secret'], ssh_pkey=jms_gateway['private_key_path'], remote_bind_address=(jms_asset['address'], jms_asset['port']) ) try: server.start() except BaseSSHTunnelForwarderError: err_msg = 'Gateway is not active: %s' % jms_asset.get('name', '') print('\033[31m %s \033[0m\n' % err_msg) not_valid.append(k) else: host['ansible_host'] = jms_asset['address'] = '127.0.0.1' host['ansible_port'] = jms_asset['port'] = server.local_bind_port servers.append(server) # 网域不可连接的，就不继续执行此资源的后续任务了 for a in set(not_valid): info['all']['hosts'].pop(a) self.json_to_file(runner.inventory, info) self.gateway_servers[runner.id] = servers def local_gateway_clean(self, runner): servers = self.gateway_servers.get(runner.id, []) for s in servers: try: s.stop() except Exception: pass def before_runner_start(self, runner): self.local_gateway_prepare(runner) def after_runner_end(self, runner): self.local_gateway_clean(runner) def delete_runtime_dir(self): if settings.DEBUG_DEV: return shutil.rmtree(self.runtime_dir) def run(self, *args, **kwargs): runners = self.get_runners() if len(runners) > 1: print("### 分次执行任务, 总共 {}\n".format(len(runners))) elif len(runners) == 1: print(">>> 开始执行任务\n") else: print("### 没有需要执行的任务\n") self.execution.date_start = timezone.now() for i, runner in enumerate(runners, start=1): if len(runners) > 1: print(">>> 开始执行第 {} 批任务".format(i)) self.before_runner_start(runner) try: cb = runner.run(**kwargs) self.on_runner_success(runner, cb) except Exception as e: self.on_runner_failed(runner, e) finally: self.after_runner_end(runner) print('\n') self.execution.status = 'success' self.execution.date_finished = timezone.now() self.execution.save() self.delete_runtime_dir()