U Cv f4@sBUddlmZddlZddlZddlZddlZddlmZmZm Z m Z ddl Z ddl mZddlmZddlmZddlmZmZmZerddlmZeeZd Zd d Zd d ZddZddZ e!ddfddZ"Gdddeej#Z$GdddZ%GdddZ&Gddde%Z'Gddde'Z(Gd d!d!Z)iZ*d"e+d#<dS)$) annotationsN) TYPE_CHECKINGAnyClassVarIterable) cf_encoder)indexing)is_duck_dask_array) FrozenDictNdimSizeLenMixin is_remote_uri)BufferedIOBaseZ __values__cCs@t|tjrt|}t|trsz)AbstractDataStore.load..)r rKitemsrJr? variables attributesrrrloadjs   zAbstractDataStore.loadcCsdSrrrHrrrcloseszAbstractDataStore.closecCs|SrrrHrrr __enter__szAbstractDataStore.__enter__cCs |dSr)rW)r?Zexception_typeZexception_valuer/rrr__exit__szAbstractDataStore.__exit__N) rArBrCrDrIrJrKrLrVrWrXrYrrrrrE[srEc@s.eZdZdZd ddZd ddZd dd ZdS) ArrayWritersourcestargetsregionslockNcCsg|_g|_g|_||_dSrr[)r?r_rrr__init__szArrayWriter.__init__cCsHt|r.|j||j||j|n|r<|||<n||d<dS)N.)r r\appendr]r^)r?sourcetargetZregionrrradds   zArrayWriter.addTcCsJ|jrFddlm}|j|j|j|j|d|jd}g|_g|_g|_|SdS)NrT)r_computeflushr^)r\Z dask.arrayr5storer]r_r^)r?redaZ delayed_storerrrsyncs zArrayWriter.sync)N)N)T)rArBrCrDr`rdrirrrrrZs  rZc@sveZdZdZddZddZddZdd Zd d Zd d Z ddZ e ddfddZ ddZ dddZdddZdS)AbstractWritableDataStorercs4fdd|D}fdd|D}||fS)a Encode the variables and attributes in this store Parameters ---------- variables : dict-like Dictionary of key/value (variable name / xr.Variable) pairs attributes : dict-like Dictionary of key/value (attribute name / attribute) pairs Returns ------- variables : dict-like attributes : dict-like csi|]\}}||qSrencode_variablerMrHrr sz4AbstractWritableDataStore.encode..csi|]\}}||qSrencode_attributerMrHrrrms)rRrSrrHrencodesz AbstractWritableDataStore.encodecCs|S)zencode one variabler)r?rPrrrrlsz)AbstractWritableDataStore.encode_variablecCs|S)zencode one attributer)r?arrrrosz*AbstractWritableDataStore.encode_attributecCs tdSrrF)r?dimlengthrrr set_dimensionsz'AbstractWritableDataStore.set_dimensioncCs tdSrrFr?rOrPrrr set_attributesz'AbstractWritableDataStore.set_attributecCs tdSrrFrurrr set_variablesz&AbstractWritableDataStore.set_variablecCs|||jdS)z in stores, variables are all variables AND coordinates in xarray.Dataset variables are variables NOT coordinates, so here we pass the whole dataset in instead of doing dataset.variables N)rgattrs)r?Zdatasetrrr store_datasetsz'AbstractWritableDataStore.store_datasetNcCsL|dkrt}|||\}}|||j||d|j||||ddS)a Top level method for putting data on this store, this method: - encodes variables/attributes - sets dimensions - sets variables Parameters ---------- variables : dict-like Dictionary of key/value (variable name / xr.Variable) pairs attributes : dict-like Dictionary of key/value (attribute name / attribute) pairs check_encoding_set : list-like List of variables that should be checked for invalid encoding values writer : ArrayWriter unlimited_dims : list-like List of dimension names that should be treated as unlimited dimensions. Nunlimited_dims)rZrpset_attributesset_dimensions set_variables)r?rTrUcheck_encoding_setwriterr{rrrrgs zAbstractWritableDataStore.storecCs"|D]\}}|||qdS)z This provides a centralized method to set the dataset attributes on the data store. Parameters ---------- attributes : dict-like Dictionary of key/value (attribute name / attribute) pairs N)rRrv)r?rUrOrPrrrr|s z(AbstractWritableDataStore.set_attributesc CsH|D]:\}}t|}||k}|j||||d\} } || | qdS)a This provides a centralized method to set the variables on the data store. Parameters ---------- variables : dict-like Dictionary of key/value (variable name / xr.Variable) pairs check_encoding_set : list-like List of variables that should be checked for invalid encoding values writer : ArrayWriter unlimited_dims : list-like List of dimension names that should be treated as unlimited dimensions. rzN)rRrZprepare_variablerd) r?rTrrr{ZvnrPrcheckrcrbrrrr~s z'AbstractWritableDataStore.set_variablesc Cs|dkrt}|}i}|D] }d||<q|D]}|tt|j|jq4|D]\\}}||kr|||krt d|d|d||dqZ||krZ||k}| |||qZdS)au This provides a centralized method to set the dimensions on the data store. Parameters ---------- variables : dict-like Dictionary of key/value (variable name / xr.Variable) pairs unlimited_dims : list-like List of dimension names that should be treated as unlimited dimensions. Nz,Unable to update size for existing dimensionz (z != )) setrIvaluesupdatedictzipdimsshaperR ValueErrorrt) r?rTr{Z existing_dimsrrPrrrsZ is_unlimitedrrrr}:s   z(AbstractWritableDataStore.set_dimensions)N)N)rArBrCrDrprlrortrvrwry frozensetrgr|r~r}rrrrrjs  ' rjc@seZdZdZddZdS)WritableCFDataStorercsBt||\}}fdd|D}fdd|D}||fS)Ncsi|]\}}||qSrrkrMrHrrrmdsz.WritableCFDataStore.encode..csi|]\}}||qSrrnrMrHrrrmes)rrRrSrrHrrp`szWritableCFDataStore.encodeN)rArBrCrDrprrrrr]src@sreZdZUdZdZded<dZded<dZd ed <dZd ed <d d ddZ dddddddZ ddddZ dS)BackendEntrypointa3 ``BackendEntrypoint`` is a class container and it is the main interface for the backend plugins, see :ref:`RST backend_entrypoint`. It shall implement: - ``open_dataset`` method: it shall implement reading from file, variables decoding and it returns an instance of :py:class:`~xarray.Dataset`. It shall take in input at least ``filename_or_obj`` argument and ``drop_variables`` keyword argument. For more details see :ref:`RST open_dataset`. - ``guess_can_open`` method: it shall return ``True`` if the backend is able to open ``filename_or_obj``, ``False`` otherwise. The implementation of this method is not mandatory. Attributes ---------- available : bool, default: True Indicate wether this backend is available given the installed packages. The setting of this attribute is not mandatory. open_dataset_parameters : tuple, default: None A list of ``open_dataset`` method parameters. The setting of this attribute is not mandatory. description : str, default: "" A short string describing the engine. The setting of this attribute is not mandatory. url : str, default: "" A string with the URL to the backend's documentation. The setting of this attribute is not mandatory. 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