7ab80b554d
Implements Blueprint reddwarf-trove-rename Change-Id: Ia9ee609bbc06a1d8b9d6917642529f30347541fd
161 lines
5.3 KiB
Python
161 lines
5.3 KiB
Python
import pexpect
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import re
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from sqlalchemy import create_engine
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from trove import tests
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from trove.tests.config import CONFIG
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from sqlalchemy.exc import OperationalError
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try:
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from sqlalchemy.exc import ResourceClosedError
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except ImportError:
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ResourceClosedError = Exception
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def create_mysql_connection(host, user, password):
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connection = CONFIG.mysql_connection_method
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if connection['type'] == "direct":
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return SqlAlchemyConnection(host, user, password)
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elif connection['type'] == "tunnel":
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if 'ssh' not in connection:
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raise RuntimeError("If connection type is 'tunnel' then a "
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"property 'ssh' is expected.")
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return PexpectMySqlConnection(connection['ssh'], host, user, password)
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else:
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raise RuntimeError("Unknown Bad test configuration for "
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"mysql_connection_method")
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class MySqlConnectionFailure(RuntimeError):
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def __init__(self, msg):
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super(MySqlConnectionFailure, self).__init__(msg)
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class MySqlPermissionsFailure(RuntimeError):
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def __init__(self, msg):
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super(MySqlPermissionsFailure, self).__init__(msg)
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class SqlAlchemyConnection(object):
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def __init__(self, host, user, password):
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self.host = host
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self.user = user
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self.password = password
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try:
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self.engine = self._init_engine(user, password, host)
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except OperationalError as oe:
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if self._exception_is_permissions_issue(oe.message):
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raise MySqlPermissionsFailure(oe)
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else:
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raise MySqlConnectionFailure(oe)
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@staticmethod
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def _exception_is_permissions_issue(msg):
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"""Assert message cited a permissions issue and not something else."""
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pos_error = re.compile(".*Host '[\w\.]*' is not allowed to connect to "
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"this MySQL server.*")
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pos_error1 = re.compile(".*Access denied for user "
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"'[\w\*\!\@\#\^\&]*'@'[\w\.]*'.*")
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if (pos_error.match(msg) or pos_error1.match(msg)):
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return True
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def __enter__(self):
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try:
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self.conn = self.engine.connect()
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except OperationalError as oe:
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if self._exception_is_permissions_issue(oe.message):
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raise MySqlPermissionsFailure(oe)
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else:
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raise MySqlConnectionFailure(oe)
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self.trans = self.conn.begin()
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return self
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def execute(self, cmd):
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"""Execute some code."""
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cmd = cmd.replace("%", "%%")
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try:
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return self.conn.execute(cmd).fetchall()
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except:
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self.trans.rollback()
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self.trans = None
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try:
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raise
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except ResourceClosedError:
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return []
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def __exit__(self, type, value, traceback):
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if self.trans:
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if type is not None: # An error occurred
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self.trans.rollback()
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else:
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self.trans.commit()
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self.conn.close()
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@staticmethod
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def _init_engine(user, password, host):
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return create_engine("mysql://%s:%s@%s:3306" % (user, password, host),
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pool_recycle=1800, echo=True)
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class PexpectMySqlConnection(object):
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TIME_OUT = 30
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def __init__(self, ssh_args, host, user, password):
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self.host = host
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self.user = user
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self.password = password
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cmd = '%s %s' % (tests.SSH_CMD, ssh_args)
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self.proc = pexpect.spawn(cmd)
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print(cmd)
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self.proc.expect(":~\$", timeout=self.TIME_OUT)
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cmd2 = "mysql --host '%s' -u '%s' '-p%s'\n" % \
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(self.host, self.user, self.password)
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print(cmd2)
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self.proc.send(cmd2)
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result = self.proc.expect([
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'mysql>',
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'Access denied',
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"Can't connect to MySQL server"],
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timeout=self.TIME_OUT)
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if result == 1:
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raise MySqlPermissionsFailure(self.proc.before)
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elif result == 2:
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raise MySqlConnectionFailure(self.proc.before)
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def __enter__(self):
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return self
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def __exit__(self, type, value, traceback):
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self.proc.close()
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def execute(self, cmd):
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self.proc.send(cmd + "\G\n")
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outcome = self.proc.expect(['Empty set', 'mysql>'],
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timeout=self.TIME_OUT)
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if outcome == 0:
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return []
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else:
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# This next line might be invaluable for long test runs.
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print("Interpreting output: %s" % self.proc.before)
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lines = self.proc.before.split("\r\n")
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result = []
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row = None
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for line in lines:
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plural_s = "s" if len(result) != 0 else ""
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end_line = "%d row%s in set" % ((len(result) + 1), plural_s)
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if len(result) == 0:
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end_line = "1 row in set"
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if (line.startswith("***************************") or
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line.startswith(end_line)):
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if row is not None:
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result.append(row)
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row = {}
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elif row is not None:
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colon = line.find(": ")
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field = line[:colon]
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value = line[colon + 2:]
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row[field] = value
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return result
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