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|
jr&|jd„|
jDƒƒq&q&W|ri||d<n|S(s¶Get a list of sets of unique model keys.

    :param model: the ORM model class
    :rtype: list of sets of strings
    :return: unique model keys or None if unable to find them
    tinfotoslodb_unique_keyscSsh|]}|j’qS((tname(t.0tc((sM/home/tvault/.virtenv/lib/python2.7/site-packages/oslo_db/sqlalchemy/utils.pys	<setcomp>is	cSsh|]}|j’qS((R#(R$R%((sM/home/tvault/.virtenv/lib/python2.7/site-packages/oslo_db/sqlalchemy/utils.pys	<setcomp>ps	N(R
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	!
cCsPt|ƒ}|dkrdSt|ƒ}x!|D]}|j|ƒr/tSq/WtS(s‘Check whetever the sorting order is stable.

    :return: True if it is stable, False if it's not, None if it's impossible
    to determine.
    N(R<R'tsettissubsettTruetFalse(R5t	sort_keystkeyst
sort_keys_settunique_keys((sM/home/tvault/.virtenv/lib/python2.7/site-packages/oslo_db/sqlalchemy/utils.pyt_stable_sorting_orderws
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k	rG|j!|ƒ}n|S(s;Returns a query with sorting / pagination criteria added.

    Pagination works by requiring a unique sort_key, specified by sort_keys.
    (If sort_keys is not unique, then we risk looping through values.)
    We use the last row in the previous page as the 'marker' for pagination.
    So we must return values that follow the passed marker in the order.
    With a single-valued sort_key, this would be easy: sort_key > X.
    With a compound-values sort_key, (k1, k2, k3) we must do this to repeat
    the lexicographical ordering:
    (k1 > X1) or (k1 == X1 && k2 > X2) or (k1 == X1 && k2 == X2 && k3 > X3)

    We also have to cope with different sort_directions.

    Typically, the id of the last row is used as the client-facing pagination
    marker, then the actual marker object must be fetched from the db and
    passed in to us as marker.

    :param query: the query object to which we should add paging/sorting
    :param model: the ORM model class
    :param limit: maximum number of items to return
    :param sort_keys: array of attributes by which results should be sorted
    :param marker: the last item of the previous page; we returns the next
                    results after this value.
    :param sort_dir: direction in which results should be sorted (asc, desc)
                     suffix -nullsfirst, -nullslast can be added to defined
                     the ordering of null values
    :param sort_dirs: per-column array of sort_dirs, corresponding to sort_keys

    :rtype: sqlalchemy.orm.query.Query
    :return: The query with sorting/pagination added.
    s@Unique keys not in sort_keys. The sorting order may be unstable.RRRtRRs*Unknown sort direction, must be one of: %ss, N("RER@tLOGtwarningRtAssertionErrorR'tlentzipR
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startswithtsqltand_tor_tfiltertlimit(tqueryR5R]RAtmarkertsort_dirt	sort_dirst	_sort_keytcurrent_sort_keytcurrent_sort_dirt
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cCs]|dkr|St|tjƒs5t|tjƒr<|gSt|tƒrO|St|ƒSdS(N(R'R-tcollectionstIterabletsixtstring_typestlist(txtdefault((sM/home/tvault/.virtenv/lib/python2.7/site-packages/oslo_db/sqlalchemy/utils.pytto_listøscCs€d|jjkr.ttdƒ|jƒ‚n|jjjjj}|rd|j	|j|kƒ}n|j	|j|kƒ}|S(NtdeletedsUThere is no `deleted` column in `%s` table. Project doesn't use soft-deleted feature.(
t	__table__R2RSRt__name__R%R~R|targR\(R^tdb_modelR~tdefault_deleted_value((sM/home/tvault/.virtenv/lib/python2.7/site-packages/oslo_db/sqlalchemy/utils.pyt_read_deleted_filterscCs€d|jjkr.ttdƒ|jƒ‚nt|tttfƒrd|j	|j
j|ƒƒ}n|j	|j
|kƒ}|S(Nt
project_ids.There is no `project_id` column in `%s` table.(RR2RSRR€R-RzttupleR=R\R…tin_(R^R‚R…((sM/home/tvault/.virtenv/lib/python2.7/site-packages/oslo_db/sqlalchemy/utils.pyt_project_filterscKs™t|tjƒs'ttdƒƒ‚n|s<|j|ƒn|j|Œ}d|krpt|||dƒ}nd|kr•t|||dƒ}n|S(s'Query helper for db.sqlalchemy api methods.

    This accounts for `deleted` and `project_id` fields.

    :param model:        Model to query. Must be a subclass of ModelBase.
    :type model:         models.ModelBase

    :param session:      The session to use.
    :type session:       sqlalchemy.orm.session.Session

    :param args:         Arguments to query. If None - model is used.
    :type args:          tuple

    Keyword arguments:

    :keyword project_id: If present, allows filtering by project_id(s).
                         Can be either a project_id value, or an iterable of
                         project_id values, or None. If an iterable is passed,
                         only rows whose project_id column value is on the
                         `project_id` list will be returned. If None is passed,
                         only rows which are not bound to any project, will be
                         returned.
    :type project_id:    iterable,
                         model.__table__.columns.project_id.type,
                         None type

    :keyword deleted:    If present, allows filtering by deleted field.
                         If True is passed, only deleted entries will be
                         returned, if False - only existing entries.
    :type deleted:       bool


    Usage:

    .. code-block:: python

      from oslo_db.sqlalchemy import utils


      def get_instance_by_uuid(uuid):
          session = get_session()
          with session.begin()
              return (utils.model_query(models.Instance, session=session)
                           .filter(models.Instance.uuid == uuid)
                           .first())

      def get_nodes_stat():
          data = (Node.id, Node.cpu, Node.ram, Node.hdd)

          session = get_session()
          with session.begin()
              return utils.model_query(Node, session=session, args=data).all()

    Also you can create your own helper, based on ``utils.model_query()``.
    For example, it can be useful if you plan to use ``project_id`` and
    ``deleted`` parameters from project's ``context``

    .. code-block:: python

      from oslo_db.sqlalchemy import utils


      def _model_query(context, model, session=None, args=None,
                       project_id=None, project_only=False,
                       read_deleted=None):

          # We suppose, that functions ``_get_project_id()`` and
          # ``_get_deleted()`` should handle passed parameters and
          # context object (for example, decide, if we need to restrict a user
          # to query his own entries by project_id or only allow admin to read
          # deleted entries). For return values, we expect to get
          # ``project_id`` and ``deleted``, which are suitable for the
          # ``model_query()`` signature.
          kwargs = {}
          if project_id is not None:
              kwargs['project_id'] = _get_project_id(context, project_id,
                                                     project_only)
          if read_deleted is not None:
              kwargs['deleted'] = _get_deleted_dict(context, read_deleted)
          session = session or get_session()

          with session.begin():
              return utils.model_query(model, session=session,
                                       args=args, **kwargs)

      def get_instance_by_uuid(context, uuid):
          return (_model_query(context, models.Instance, read_deleted='yes')
                        .filter(models.Instance.uuid == uuid)
                        .first())

      def get_nodes_data(context, project_id, project_only='allow_none'):
          data = (Node.id, Node.cpu, Node.ram, Node.hdd)

          return (_model_query(context, Node, args=data, project_id=project_id,
                               project_only=project_only)
                        .all())

    s'model should be a subclass of ModelBaseR~R…(t
issubclassRt	ModelBaset	TypeErrorRR^R„Rˆ(R5tsessiontargstkwargsR^((sM/home/tvault/.virtenv/lib/python2.7/site-packages/oslo_db/sqlalchemy/utils.pytmodel_querysd$cCs%tƒ}||_t||dtƒS(sReturns an sqlalchemy table dynamically from db.

    Needed because the models don't work for us in migrations
    as models will be far out of sync with the current data.

    .. warning::

       Do not use this method when creating ForeignKeys in database migrations
       because sqlalchemy needs the same MetaData object to hold information
       about the parent table and the reference table in the ForeignKey. This
       method uses a unique MetaData object per table object so it won't work
       with ForeignKey creation.
    tautoload(RtbindRR?(tengineR#tmetadata((sM/home/tvault/.virtenv/lib/python2.7/site-packages/oslo_db/sqlalchemy/utils.pyt	get_tables		tInsertFromSelectcBs&eZdZdd„Zdd„ZRS(sˆForm the base for `INSERT INTO table (SELECT ... )` statement.

    DEPRECATED: this class is deprecated and will be removed from oslo_db
    in a few releases. Use default SQLAlchemy insert from select implementation
    instead

    :param table: table to insert records
    :param select: select query
    :param cols: list of columns to specify in insert clause
    :return: SQLAlchemy :class:`Insert` object instance

    Usage:

    .. code-block:: python

      select = sql.select(table_from)
      insert = InsertFromSelect(table_to, select,
                                ['id', 'name', 'insert_date'])
      engine.execute(insert)

    cCsD|s(g|jD]}|j^q}n|jdtƒj||ƒS(Ntinline(R%R#tinsertR?tfrom_select(tclsttabletselecttcolsR%((sM/home/tvault/.virtenv/lib/python2.7/site-packages/oslo_db/sqlalchemy/utils.pyt__new__¼s"cCsdS(N((tselfRšR›Rœ((sM/home/tvault/.virtenv/lib/python2.7/site-packages/oslo_db/sqlalchemy/utils.pyt__init__ÂsN(R€t
__module__t__doc__R'RRŸ(((sM/home/tvault/.virtenv/lib/python2.7/site-packages/oslo_db/sqlalchemy/utils.pyR•¢scCsvy||}Wn0tk
r@tdƒ}tj||ƒ‚nXt|tƒsrtdƒ}tj||ƒ‚n|S(NsvPlease specify column %s in col_name_col_instance param. It is required because column has unsupported type by SQLite.swcol_name_col_instance param has wrong type of column instance for column %s It should be instance of sqlalchemy.Column.(RMRRtColumnErrorR-R(tcol_name_col_instancetcolumn_nametcolumntmsg((sM/home/tvault/.virtenv/lib/python2.7/site-packages/oslo_db/sqlalchemy/utils.pyt_get_not_supported_columnÆs
c	Gsþtƒ}||_t||dtƒ}g|D]}|j|^q.}tj|jjƒg}|j|ƒt	j
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sôDrop all old rows having the same values for columns in uc_columns.

    This method drop (or mark ad `deleted` if use_soft_delete is True) old
    duplicate rows form table with name `table_name`.

    :param migrate_engine:  Sqlalchemy engine
    :param table_name:      Table with duplicates
    :param use_soft_delete: If True - values will be marked as `deleted`,
                            if False - values will be removed from table
    :param uc_column_names: Unique constraint columns
    Rtgroup_bythavingiis=Deleting duplicated row with id: %(id)s from table: %(table)stidRšR~t
updated_att
deleted_atN(RR‘RR?R%RtmaxRªtextendR.RYR›tcounttexecutetfetchallR'R¬twhereRGR!RtdicttupdatetvaluesR
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cCsQt|jjjtƒrdSt|jjjtƒr8dStjtdƒƒ‚dS(NiRFsUnsupported id columns type(	R-R%RªttypeRRRR¢R(Rš((sM/home/tvault/.virtenv/lib/python2.7/site-packages/oslo_db/sqlalchemy/utils.pyt_get_default_deleted_values
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|
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t	localhostcCsLi|d6|d6|d6|d6|d6}|dkr>d}nd}||S(	sdGet database connection

    Try to get a connection with a very specific set of values, if we get
    these then we'll run the tests, otherwise they are skipped

    DEPRECATED: this function is deprecated and will be removed from oslo_db
    in a few releases. Please use the provisioning system for dealing
    with URLs and database provisioning.

    tbackendtusertpasswdthosttdatabaseRÔs%(backend)s:///%(database)ss7%(backend)s://%(user)s:%(passwd)s@%(host)s/%(database)s((RëRïRìRíRîRttemplate((sM/home/tvault/.virtenv/lib/python2.7/site-packages/oslo_db/sqlalchemy/utils.pytget_connect_stringàs

	c	Csqddlm}td|d|d|d|ƒ}y |jj|ƒ}|jƒWntjk
rhtSXt	SdS(sôReturn True if the given backend is available.


    DEPRECATED: this function is deprecated and will be removed from oslo_db
    in a few releases. Please use the provisioning system to access
    databases based on backend availability.

    iÿÿÿÿ(t	provisionRëRïRìRíN(
toslo_db.sqlalchemyRòRñtBackendt_ensure_backend_availabletdisposeRtBackendNotAvailableR@R?(RëRïRìRíRòtconnect_uriteng((sM/home/tvault/.virtenv/lib/python2.7/site-packages/oslo_db/sqlalchemy/utils.pytis_backend_availøs		cCs†|jjdƒ}|jjdƒ}|d}|djdƒ}|d}d}t|ƒdkrv|djƒ}n||||fS(Nt/t@iit:RF(tpathtstriptnetloctsplitRJ(tconn_piecesRït
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cCsHtjj|ƒ}|j|ƒ}g|D]}|d^q(}||kS(s©Check if given index exists.

    :param migrate_engine: sqlalchemy engine
    :param table_name:     name of the table
    :param index_name:     name of the index
    R#(RRÉRÊRË(R¸R¹t
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            def set_sqlite_special_option(engine):
                return engine.execute("sqlite thing")

            @set_special_option.dispatch_for("mysql+mysqldb")
            def set_mysqldb_special_option(engine):
                return engine.execute("mysqldb thing")

        After the above registration, the ``set_special_option()`` function
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        The filter system supports two modes, "multiple" and "single".
        The default is "single", and requires that one and only one function
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        "multiple" mode, on the other hand, does not support return
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            @dispatch_for_dialect("*", multiple=True)
            def set_options(engine):
                # set options that apply to *all* engines

            @set_options.dispatch_for("postgresql")
            def set_postgresql_options(engine):
                # set options that apply to all Postgresql engines

            @set_options.dispatch_for("postgresql+psycopg2")
            def set_postgresql_psycopg2_options(engine):
                # set options that apply only to "postgresql+psycopg2"

            @set_options.dispatch_for("*+pyodbc")
            def set_pyodbc_options(engine):
                # set options that apply to all pyodbc backends

        Note that in both modes, any number of additional arguments can be
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            @dispatch_for_dialect("*", multiple=True)
            def set_engine_options(url, opts):
                pass

            @set_engine_options.dispatch_for("mysql+mysqldb")
            def _mysql_set_default_charset_to_utf8(url, opts):
                opts.setdefault('charset', 'utf-8')

            @set_engine_options.dispatch_for("sqlite")
            def _set_sqlite_in_memory_check_same_thread(url, opts):
                if url.database in (None, 'memory'):
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            opts = {}
            set_engine_options(url, opts)

        The driver specifiers are of the form:
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