import hashlib import json import os import shutil 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 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 SSHTunnelManager: def __init__(self, *args, **kwargs): self.gateway_servers = dict() @staticmethod def file_to_json(path): with open(path, 'r') as f: d = json.load(f) return d @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.get('jms_asset'), host.get('gateway') if not jms_gateway: continue try: 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']) ) server.start() except Exception as e: err_msg = 'Gateway is not active: %s' % jms_asset.get('name', '') print(f'\033[31m {err_msg} 原因: {e} \033[0m\n') not_valid.append(k) else: host['ansible_host'] = jms_asset['address'] = host['login_host'] = '127.0.0.1' host['ansible_port'] = jms_asset['port'] = host['login_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 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 self.playbooks = [] 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 = '.' + hashlib.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, task_type=self.__class__.method_type(), ) 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_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(): if not assets: continue if not platform.automation or not platform.automation.ansible_enabled: print(_(" - Platform {} ansible disabled").format(platform.name)) continue 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) if not playbook_path: continue 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): if settings.DEBUG_DEV: 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 json_dumps(data): return json.dumps(data, indent=4, sort_keys=True) def delete_runtime_dir(self): if settings.DEBUG_DEV: return shutil.rmtree(self.runtime_dir) def run(self, *args, **kwargs): print(">>> 任务准备阶段\n") 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)) ssh_tunnel = SSHTunnelManager() ssh_tunnel.local_gateway_prepare(runner) try: cb = runner.run(**kwargs) self.on_runner_success(runner, cb) except Exception as e: self.on_runner_failed(runner, e) finally: ssh_tunnel.local_gateway_clean(runner) print('\n') self.execution.status = 'success' self.execution.date_finished = timezone.now() self.execution.save() self.delete_runtime_dir()