import abc import subprocess from optparse import OptionParser from shutil import copyfile import os import sys import argparse RC_VALIDATE = 101 RC_UP = 102 RC_DOWN = 103 RC_BACKUP = 104 RC_RESTORE = 105 RC_UNNKNOW_TYPE = 106 RC_GEN = 110 class DBMigrator(): def __init__(self, target): self.target = target self.script = "./db/run.sh" def backup(self): return run_cmd(self.script + " backup") == 0 def restore(self): return run_cmd(self.script + " restore") == 0 def up(self): cmd = self.script + " up" if self.target != '': cmd = cmd + " " + self.target return run_cmd(cmd) == 0 def validate(self): return run_cmd(self.script + " test") == 0 class CfgMigrator(): def __init__(self, target, output): self.target = target self.output = output self.cfg_path = "/harbor-migration/harbor-cfg/harbor.cfg" self.backup_path = "/harbor-migration/backup" self.output_path = "/harbor-migration/output" def backup(self): try: copyfile(self.cfg_path, self.backup_path+"/harbor.cfg") print ("Success to backup harbor.cfg.") return True except Exception, e: print ("Back up error: %s" % str(e)) return False def restore(self): if not os.path.exists(self.backup_path+"/harbor.cfg"): print ("Unable to restore as there is no harbor.cfg") return False try: copyfile(self.backup_path+"/harbor.cfg", self.cfg_path) print ("Success to restore harbor.cfg.") return True except Exception, e: print ("Restore error: %s" % str(e)) return False def up(self): if not os.path.exists(self.cfg_path): print ("Skip cfg up as no harbor.cfg in the path.") return True if self.output and os.path.isdir(self.output_path): cmd = "python ./cfg/run.py --input " + self.cfg_path + " --output " + self.output_path + "/harbor.cfg" else: print ("The path of the migrated harbor.cfg is not set, the input file will be overwritten.") cmd = "python ./cfg/run.py --input " + self.cfg_path if self.target != '': cmd = cmd + " --target " + self.target return run_cmd(cmd) == 0 def validate(self): if not os.path.exists(self.cfg_path): print ("Unable to loacte the harbor.cfg, please check.") return False print ("Success to validate harbor.cfg.") return True class Parameters(object): def __init__(self): self.db_user = os.getenv('DB_USR', '') self.db_pwd = os.getenv('DB_PWD', '') self.skip_confirm = os.getenv('SKIP_CONFIRM', 'n') self.output = False self.is_migrate_db = True self.is_migrate_cfg = True self.target_version = '' self.action = '' self.init_from_input() def is_action(self, action): if action == "test" or action == "backup" or action == "restore" or action == "up": return True else: return False def parse_input(self): argv_len = len(sys.argv[1:]) last_argv = sys.argv[argv_len:][0] if not self.is_action(last_argv): print ("Fail to parse input: the last parameter should in test:up:restore:backup") sys.exit(RC_GEN) if last_argv == 'up': if self.skip_confirm != 'y': if not pass_skip_confirm(): sys.exit(RC_GEN) if argv_len == 1: return (True, True, '', False, last_argv) parser = argparse.ArgumentParser(description='migrator of harbor') parser.add_argument('--db', action="store_true", dest='is_migrate_db', required=False, default=False, help='The flag to upgrade db.') parser.add_argument('--cfg', action="store_true", dest='is_migrate_cfg', required=False, default=False, help='The flag to upgrede cfg.') parser.add_argument('--version', action="store", dest='target_version', required=False, default='', help='The target version that the harbor will be migrated to.') parser.add_argument('--output', action="store_true", dest='output', required=False, default=False, help='The path of the migrated harbor.cfg, if not set the input file will be overwritten.') args = parser.parse_args(sys.argv[1:argv_len]) args.action = last_argv return (args.is_migrate_db, args.is_migrate_cfg, args.target_version, args.output, args.action) def init_from_input(self): (self.is_migrate_db, self.is_migrate_cfg, self.target_version, self.output, self.action) = self.parse_input() def run_cmd(cmd): return os.system(cmd) def pass_skip_confirm(): valid = {"yes": True, "y": True, "ye": True, "no": False, "n": False} message = "Please backup before upgrade, \nEnter y to continue updating or n to abort: " while True: sys.stdout.write(message) choice = raw_input().lower() if choice == '': return False elif choice in valid: return valid[choice] else: sys.stdout.write("Please respond with 'yes' or 'no' " "(or 'y' or 'n').\n") def main(): commandline_input = Parameters() db_migrator = DBMigrator(commandline_input.target_version) cfg_migrator = CfgMigrator(commandline_input.target_version, commandline_input.output) try: # test if commandline_input.action == "test": if commandline_input.is_migrate_db: if not db_migrator.validate(): print ("Fail to validate: please make sure your DB auth is correct.") sys.exit(RC_VALIDATE) if commandline_input.is_migrate_cfg: if not cfg_migrator.validate(): print ("Fail to validate: please make sure your cfg path is correct.") sys.exit(RC_VALIDATE) # backup elif commandline_input.action == "backup": if commandline_input.is_migrate_db: if not db_migrator.backup(): sys.exit(RC_BACKUP) if commandline_input.is_migrate_cfg: if not cfg_migrator.backup(): sys.exit(RC_BACKUP) # up elif commandline_input.action == "up": if commandline_input.is_migrate_db: if not db_migrator.up(): sys.exit(RC_UP) if commandline_input.is_migrate_cfg: if not cfg_migrator.up(): sys.exit(RC_UP) # restore elif commandline_input.action == "restore": if commandline_input.is_migrate_db: if not db_migrator.restore(): sys.exit(RC_RESTORE) if commandline_input.is_migrate_cfg: if not cfg_migrator.restore(): sys.exit(RC_RESTORE) else: print ("Unknow action type: " + str(commandline_input.action)) sys.exit(RC_UNNKNOW_TYPE) except Exception as ex: print ("Migrator fail to execute, err: " + ex.message) sys.exit(RC_GEN) if __name__ == '__main__': main()