sqlalchemy.pool.get_pool - python examples

Here are the examples of the python api sqlalchemy.pool.get_pool taken from open source projects. By voting up you can indicate which examples are most useful and appropriate.

4 Examples 7

0 View Complete Implementation : strategies.py
Copyright MIT License
Author : analyzeDFIR
    def create(self, name_or_url, **kwargs):
        # create url.URL object
        u = url.make_url(name_or_url)

        plugins = u._instantiate_plugins(kwargs)

        u.query.pop('plugin', None)

        entrypoint = u._get_entrypoint()
        dialect_cls = entrypoint.get_dialect_cls(u)

        if kwargs.pop('_coerce_config', False):
            def pop_kwarg(key, default=None):
                value = kwargs.pop(key, default)
                if key in dialect_cls.engine_config_types:
                    value = dialect_cls.engine_config_types[key](value)
                return value
        else:
            pop_kwarg = kwargs.pop

        dialect_args = {}
        # consume dialect arguments from kwargs
        for k in util.get_cls_kwargs(dialect_cls):
            if k in kwargs:
                dialect_args[k] = pop_kwarg(k)

        dbapi = kwargs.pop('module', None)
        if dbapi is None:
            dbapi_args = {}
            for k in util.get_func_kwargs(dialect_cls.dbapi):
                if k in kwargs:
                    dbapi_args[k] = pop_kwarg(k)
            dbapi = dialect_cls.dbapi(**dbapi_args)

        dialect_args['dbapi'] = dbapi

        for plugin in plugins:
            plugin.handle_dialect_kwargs(dialect_cls, dialect_args)

        # create dialect
        dialect = dialect_cls(**dialect_args)

        # astemble connection arguments
        (cargs, cparams) = dialect.create_connect_args(u)
        cparams.update(pop_kwarg('connect_args', {}))
        cargs = list(cargs)  # allow mutability

        # look for existing pool or create
        pool = pop_kwarg('pool', None)
        if pool is None:
            def connect(connection_record=None):
                if dialect._has_events:
                    for fn in dialect.dispatch.do_connect:
                        connection = fn(
                            dialect, connection_record, cargs, cparams)
                        if connection is not None:
                            return connection
                return dialect.connect(*cargs, **cparams)

            creator = pop_kwarg('creator', connect)

            poolclast = pop_kwarg('poolclast', None)
            if poolclast is None:
                poolclast = dialect_cls.get_pool_clast(u)
            pool_args = {
                'dialect': dialect
            }

            # consume pool arguments from kwargs, translating a few of
            # the arguments
            translate = {'logging_name': 'pool_logging_name',
                         'echo': 'echo_pool',
                         'timeout': 'pool_timeout',
                         'recycle': 'pool_recycle',
                         'events': 'pool_events',
                         'use_threadlocal': 'pool_threadlocal',
                         'reset_on_return': 'pool_reset_on_return',
                         'pre_ping': 'pool_pre_ping'}
            for k in util.get_cls_kwargs(poolclast):
                tk = translate.get(k, k)
                if tk in kwargs:
                    pool_args[k] = pop_kwarg(tk)

            for plugin in plugins:
                plugin.handle_pool_kwargs(poolclast, pool_args)

            pool = poolclast(creator, **pool_args)
        else:
            if isinstance(pool, poollib._DBProxy):
                pool = pool.get_pool(*cargs, **cparams)
            else:
                pool = pool

            pool._dialect = dialect

        # create engine.
        engineclast = self.engine_cls
        engine_args = {}
        for k in util.get_cls_kwargs(engineclast):
            if k in kwargs:
                engine_args[k] = pop_kwarg(k)

        _initialize = kwargs.pop('_initialize', True)

        # all kwargs should be consumed
        if kwargs:
            raise TypeError(
                "Invalid argument(s) %s sent to create_engine(), "
                "using configuration %s/%s/%s.  Please check that the "
                "keyword arguments are appropriate for this combination "
                "of components." % (','.join("'%s'" % k for k in kwargs),
                                    dialect.__clast__.__name__,
                                    pool.__clast__.__name__,
                                    engineclast.__name__))

        engine = engineclast(pool, dialect, u, **engine_args)

        if _initialize:
            do_on_connect = dialect.on_connect()
            if do_on_connect:
                def on_connect(dbapi_connection, connection_record):
                    conn = getattr(
                        dbapi_connection, '_sqla_unwrap', dbapi_connection)
                    if conn is None:
                        return
                    do_on_connect(conn)

                event.listen(pool, 'first_connect', on_connect)
                event.listen(pool, 'connect', on_connect)

            def first_connect(dbapi_connection, connection_record):
                c = base.Connection(engine, connection=dbapi_connection,
                                    _has_events=False)
                c._execution_options = util.immutabledict()
                dialect.initialize(c)
            event.listen(pool, 'first_connect', first_connect, once=True)

        dialect_cls.engine_created(engine)
        if entrypoint is not dialect_cls:
            entrypoint.engine_created(engine)

        for plugin in plugins:
            plugin.engine_created(engine)

        return engine

0 View Complete Implementation : strategies.py
Copyright MIT License
Author : jpush
    def create(self, name_or_url, **kwargs):
        # create url.URL object
        u = url.make_url(name_or_url)

        entrypoint = u._get_entrypoint()
        dialect_cls = entrypoint.get_dialect_cls(u)

        if kwargs.pop('_coerce_config', False):
            def pop_kwarg(key, default=None):
                value = kwargs.pop(key, default)
                if key in dialect_cls.engine_config_types:
                    value = dialect_cls.engine_config_types[key](value)
                return value
        else:
            pop_kwarg = kwargs.pop

        dialect_args = {}
        # consume dialect arguments from kwargs
        for k in util.get_cls_kwargs(dialect_cls):
            if k in kwargs:
                dialect_args[k] = pop_kwarg(k)

        dbapi = kwargs.pop('module', None)
        if dbapi is None:
            dbapi_args = {}
            for k in util.get_func_kwargs(dialect_cls.dbapi):
                if k in kwargs:
                    dbapi_args[k] = pop_kwarg(k)
            dbapi = dialect_cls.dbapi(**dbapi_args)

        dialect_args['dbapi'] = dbapi

        # create dialect
        dialect = dialect_cls(**dialect_args)

        # astemble connection arguments
        (cargs, cparams) = dialect.create_connect_args(u)
        cparams.update(pop_kwarg('connect_args', {}))
        cargs = list(cargs)  # allow mutability

        # look for existing pool or create
        pool = pop_kwarg('pool', None)
        if pool is None:
            def connect(connection_record=None):
                if dialect._has_events:
                    for fn in dialect.dispatch.do_connect:
                        connection = fn(
                            dialect, connection_record, cargs, cparams)
                        if connection is not None:
                            return connection
                return dialect.connect(*cargs, **cparams)

            creator = pop_kwarg('creator', connect)

            poolclast = pop_kwarg('poolclast', None)
            if poolclast is None:
                poolclast = dialect_cls.get_pool_clast(u)
            pool_args = {}

            # consume pool arguments from kwargs, translating a few of
            # the arguments
            translate = {'logging_name': 'pool_logging_name',
                         'echo': 'echo_pool',
                         'timeout': 'pool_timeout',
                         'recycle': 'pool_recycle',
                         'events': 'pool_events',
                         'use_threadlocal': 'pool_threadlocal',
                         'reset_on_return': 'pool_reset_on_return'}
            for k in util.get_cls_kwargs(poolclast):
                tk = translate.get(k, k)
                if tk in kwargs:
                    pool_args[k] = pop_kwarg(tk)
            pool = poolclast(creator, **pool_args)
        else:
            if isinstance(pool, poollib._DBProxy):
                pool = pool.get_pool(*cargs, **cparams)
            else:
                pool = pool

        # create engine.
        engineclast = self.engine_cls
        engine_args = {}
        for k in util.get_cls_kwargs(engineclast):
            if k in kwargs:
                engine_args[k] = pop_kwarg(k)

        _initialize = kwargs.pop('_initialize', True)

        # all kwargs should be consumed
        if kwargs:
            raise TypeError(
                "Invalid argument(s) %s sent to create_engine(), "
                "using configuration %s/%s/%s.  Please check that the "
                "keyword arguments are appropriate for this combination "
                "of components." % (','.join("'%s'" % k for k in kwargs),
                                    dialect.__clast__.__name__,
                                    pool.__clast__.__name__,
                                    engineclast.__name__))

        engine = engineclast(pool, dialect, u, **engine_args)

        if _initialize:
            do_on_connect = dialect.on_connect()
            if do_on_connect:
                def on_connect(dbapi_connection, connection_record):
                    conn = getattr(
                        dbapi_connection, '_sqla_unwrap', dbapi_connection)
                    if conn is None:
                        return
                    do_on_connect(conn)

                event.listen(pool, 'first_connect', on_connect)
                event.listen(pool, 'connect', on_connect)

            def first_connect(dbapi_connection, connection_record):
                c = base.Connection(engine, connection=dbapi_connection,
                                    _has_events=False)
                c._execution_options = util.immutabledict()
                dialect.initialize(c)
            event.listen(pool, 'first_connect', first_connect, once=True)

        dialect_cls.engine_created(engine)
        if entrypoint is not dialect_cls:
            entrypoint.engine_created(engine)

        return engine

0 View Complete Implementation : strategies.py
Copyright GNU General Public License v3.0
Author : mutschler
    def create(self, name_or_url, **kwargs):
        # create url.URL object
        u = url.make_url(name_or_url)

        dialect_cls = u.get_dialect()

        dialect_args = {}
        # consume dialect arguments from kwargs
        for k in util.get_cls_kwargs(dialect_cls):
            if k in kwargs:
                dialect_args[k] = kwargs.pop(k)

        dbapi = kwargs.pop('module', None)
        if dbapi is None:
            dbapi_args = {}
            for k in util.get_func_kwargs(dialect_cls.dbapi):
                if k in kwargs:
                    dbapi_args[k] = kwargs.pop(k)
            dbapi = dialect_cls.dbapi(**dbapi_args)

        dialect_args['dbapi'] = dbapi

        # create dialect
        dialect = dialect_cls(**dialect_args)

        # astemble connection arguments
        (cargs, cparams) = dialect.create_connect_args(u)
        cparams.update(kwargs.pop('connect_args', {}))

        # look for existing pool or create
        pool = kwargs.pop('pool', None)
        if pool is None:
            def connect():
                try:
                    return dialect.connect(*cargs, **cparams)
                except Exception, e:
                    invalidated = dialect.is_disconnect(e, None, None)
                    # Py3K
                    #raise exc.DBAPIError.instance(None, None,
                    #    e, dialect.dbapi.Error,
                    #    connection_invalidated=invalidated
                    #) from e
                    # Py2K
                    import sys
                    raise exc.DBAPIError.instance(
                        None, None, e, dialect.dbapi.Error,
                        connection_invalidated=invalidated
                    ), None, sys.exc_info()[2]
                    # end Py2K

            creator = kwargs.pop('creator', connect)

            poolclast = kwargs.pop('poolclast', None)
            if poolclast is None:
                poolclast = dialect_cls.get_pool_clast(u)
            pool_args = {}

            # consume pool arguments from kwargs, translating a few of
            # the arguments
            translate = {'logging_name': 'pool_logging_name',
                         'echo': 'echo_pool',
                         'timeout': 'pool_timeout',
                         'recycle': 'pool_recycle',
                         'events': 'pool_events',
                         'use_threadlocal': 'pool_threadlocal',
                         'reset_on_return': 'pool_reset_on_return'}
            for k in util.get_cls_kwargs(poolclast):
                tk = translate.get(k, k)
                if tk in kwargs:
                    pool_args[k] = kwargs.pop(tk)
            pool = poolclast(creator, **pool_args)
        else:
            if isinstance(pool, poollib._DBProxy):
                pool = pool.get_pool(*cargs, **cparams)
            else:
                pool = pool

        # create engine.
        engineclast = self.engine_cls
        engine_args = {}
        for k in util.get_cls_kwargs(engineclast):
            if k in kwargs:
                engine_args[k] = kwargs.pop(k)

        _initialize = kwargs.pop('_initialize', True)

        # all kwargs should be consumed
        if kwargs:
            raise TypeError(
                "Invalid argument(s) %s sent to create_engine(), "
                "using configuration %s/%s/%s.  Please check that the "
                "keyword arguments are appropriate for this combination "
                "of components." % (','.join("'%s'" % k for k in kwargs),
                                    dialect.__clast__.__name__,
                                    pool.__clast__.__name__,
                                    engineclast.__name__))

        engine = engineclast(pool, dialect, u, **engine_args)

        if _initialize:
            do_on_connect = dialect.on_connect()
            if do_on_connect:
                def on_connect(dbapi_connection, connection_record):
                    conn = getattr(
                        dbapi_connection, '_sqla_unwrap', dbapi_connection)
                    if conn is None:
                        return
                    do_on_connect(conn)

                event.listen(pool, 'first_connect', on_connect)
                event.listen(pool, 'connect', on_connect)

            @util.only_once
            def first_connect(dbapi_connection, connection_record):
                c = base.Connection(engine, connection=dbapi_connection)

                # TODO: removing this allows the on connect activities
                # to generate events.  tests currently astume these aren't
                # sent.  do we want users to get all the initial connect
                # activities as events ?
                c._has_events = False

                dialect.initialize(c)
            event.listen(pool, 'first_connect', first_connect)

        return engine

0 View Complete Implementation : strategies.py
Copyright MIT License
Author : RoseOu
    def create(self, name_or_url, **kwargs):
        # create url.URL object
        u = url.make_url(name_or_url)

        dialect_cls = u.get_dialect()

        if kwargs.pop('_coerce_config', False):
            def pop_kwarg(key, default=None):
                value = kwargs.pop(key, default)
                if key in dialect_cls.engine_config_types:
                    value = dialect_cls.engine_config_types[key](value)
                return value
        else:
            pop_kwarg = kwargs.pop

        dialect_args = {}
        # consume dialect arguments from kwargs
        for k in util.get_cls_kwargs(dialect_cls):
            if k in kwargs:
                dialect_args[k] = pop_kwarg(k)

        dbapi = kwargs.pop('module', None)
        if dbapi is None:
            dbapi_args = {}
            for k in util.get_func_kwargs(dialect_cls.dbapi):
                if k in kwargs:
                    dbapi_args[k] = pop_kwarg(k)
            dbapi = dialect_cls.dbapi(**dbapi_args)

        dialect_args['dbapi'] = dbapi

        # create dialect
        dialect = dialect_cls(**dialect_args)

        # astemble connection arguments
        (cargs, cparams) = dialect.create_connect_args(u)
        cparams.update(pop_kwarg('connect_args', {}))

        # look for existing pool or create
        pool = pop_kwarg('pool', None)
        if pool is None:
            def connect():
                try:
                    return dialect.connect(*cargs, **cparams)
                except dialect.dbapi.Error as e:
                    invalidated = dialect.is_disconnect(e, None, None)
                    util.raise_from_cause(
                        exc.DBAPIError.instance(
                            None, None, e, dialect.dbapi.Error,
                            connection_invalidated=invalidated
                        )
                    )

            creator = pop_kwarg('creator', connect)

            poolclast = pop_kwarg('poolclast', None)
            if poolclast is None:
                poolclast = dialect_cls.get_pool_clast(u)
            pool_args = {}

            # consume pool arguments from kwargs, translating a few of
            # the arguments
            translate = {'logging_name': 'pool_logging_name',
                         'echo': 'echo_pool',
                         'timeout': 'pool_timeout',
                         'recycle': 'pool_recycle',
                         'events': 'pool_events',
                         'use_threadlocal': 'pool_threadlocal',
                         'reset_on_return': 'pool_reset_on_return'}
            for k in util.get_cls_kwargs(poolclast):
                tk = translate.get(k, k)
                if tk in kwargs:
                    pool_args[k] = pop_kwarg(tk)
            pool = poolclast(creator, **pool_args)
        else:
            if isinstance(pool, poollib._DBProxy):
                pool = pool.get_pool(*cargs, **cparams)
            else:
                pool = pool

        # create engine.
        engineclast = self.engine_cls
        engine_args = {}
        for k in util.get_cls_kwargs(engineclast):
            if k in kwargs:
                engine_args[k] = pop_kwarg(k)

        _initialize = kwargs.pop('_initialize', True)

        # all kwargs should be consumed
        if kwargs:
            raise TypeError(
                "Invalid argument(s) %s sent to create_engine(), "
                "using configuration %s/%s/%s.  Please check that the "
                "keyword arguments are appropriate for this combination "
                "of components." % (','.join("'%s'" % k for k in kwargs),
                                    dialect.__clast__.__name__,
                                    pool.__clast__.__name__,
                                    engineclast.__name__))

        engine = engineclast(pool, dialect, u, **engine_args)

        if _initialize:
            do_on_connect = dialect.on_connect()
            if do_on_connect:
                def on_connect(dbapi_connection, connection_record):
                    conn = getattr(
                        dbapi_connection, '_sqla_unwrap', dbapi_connection)
                    if conn is None:
                        return
                    do_on_connect(conn)

                event.listen(pool, 'first_connect', on_connect)
                event.listen(pool, 'connect', on_connect)

            def first_connect(dbapi_connection, connection_record):
                c = base.Connection(engine, connection=dbapi_connection,
                                    _has_events=False)
                c._execution_options = util.immutabledict()
                dialect.initialize(c)
            event.listen(pool, 'first_connect', first_connect, once=True)

        return engine