a
    !fQ                     @   s(  d Z ddlZddlmZ ddlZddlmZ ddlmZ ddl	m
Z
 ddlmZ ddlmZ dd	lmZ dd
lmZ dZdZdZeedZeedZdZdZdZdd Zdd Zdd ZG dd deZdd Z d1ddZ!d d! Z"d"d# Z#d$d% Z$d&d' Z%d2d(d)Z&d3d*d+Z'd,d- Z(d4d/d0Z)dS )5zVHelper functions for Cloud Storage utility classes.

These are *not* part of the API.
    N)md5)urlsplit)uuid4)resumable_media)environment_vars)_DEFAULT_TIMEOUT)DEFAULT_RETRY))DEFAULT_RETRY_IF_METAGENERATION_SPECIFIEDZSTORAGE_EMULATOR_HOSTZAPI_ENDPOINT_OVERRIDEZAPI_VERSION_OVERRIDEzhttps://storage.googleapis.comZv1))if_etag_matchzIf-Match)if_etag_not_matchzIf-None-Match))if_generation_matchZifGenerationMatch)if_generation_not_matchZifGenerationNotMatch)if_metageneration_matchZifMetagenerationMatch)if_metageneration_not_matchZifMetagenerationNotMatch)Zif_source_generation_matchZifSourceGenerationMatch)Zif_source_generation_not_matchZifSourceGenerationNotMatch)Zif_source_metageneration_matchZifSourceMetagenerationMatch)Z"if_source_metageneration_not_matchZifSourceMetagenerationNotMatchz`num_retries` has been deprecated and will be removed in a future release. Use the `retry` argument with a Retry or ConditionalRetryPolicy object, or None, instead.c                   C   s   t jttS N)osenvirongetSTORAGE_EMULATOR_ENV_VAR_DEFAULT_STORAGE_HOST r   r   ^/var/www/html/python-backend/venv/lib/python3.9/site-packages/google/cloud/storage/_helpers.py_get_storage_hostK   s    r   c                   C   s   t tjt tjS r   )r   getenvr   ZPROJECTZLEGACY_PROJECTr   r   r   r   _get_environ_projectO   s    
r   c                 C   s4   | du rdS t | d  | d  gs0td| S )zPre-flight ``Bucket`` name validation.

    :type name: str or :data:`NoneType`
    :param name: Proposed bucket name.

    :rtype: str or :data:`NoneType`
    :returns: ``name`` if valid.
    Nr   z8Bucket names must start and end with a number or letter.)allisalnum
ValueError)namer   r   r   _validate_nameV   s
    	r    c                
   @   s   e Zd ZdZdddZedd Zedd Zed	d
 Zdd Z	dd Z
edd Zddddddddeef
ddZdd Zdd ZdddddeefddZdddddeefddZdS )_PropertyMixina1  Abstract mixin for cloud storage classes with associated properties.

    Non-abstract subclasses should implement:
      - path
      - client
      - user_project

    :type name: str
    :param name: The name of the object. Bucket names must start and end with a
                 number or letter.
    Nc                 C   s   || _ i | _t | _d S r   )r   _propertiesset_changes)selfr   r   r   r   __init__u   s    z_PropertyMixin.__init__c                 C   s   t dS )z$Abstract getter for the object path.NNotImplementedErrorr%   r   r   r   pathz   s    z_PropertyMixin.pathc                 C   s   t dS )z&Abstract getter for the object client.Nr'   r)   r   r   r   client   s    z_PropertyMixin.clientc                 C   s   t dS )z,Abstract getter for the object user_project.Nr'   r)   r   r   r   user_project   s    z_PropertyMixin.user_projectc                 C   s   |du r| j }|S )a  Check client or verify over-ride.

        :type client: :class:`~google.cloud.storage.client.Client` or
                      ``NoneType``
        :param client: the client to use.  If not passed, falls back to the
                       ``client`` stored on the current object.

        :rtype: :class:`google.cloud.storage.client.Client`
        :returns: The client passed in or the currently bound client.
        N)r+   )r%   r+   r   r   r   _require_client   s    z_PropertyMixin._require_clientc                 C   s   i S )a@  Return any encryption headers needed to fetch the object.

        .. note::
           Defined here because :meth:`reload` calls it, but this method is
           really only relevant for :class:`~google.cloud.storage.blob.Blob`.

        :rtype: dict
        :returns: a mapping of encryption-related headers.
        r   r)   r   r   r   _encryption_headers   s    
z"_PropertyMixin._encryption_headersc                 C   s   i }| j dur| j |d< |S )zDefault query parameters.NZuserProject)r,   )r%   paramsr   r   r   _query_params   s    

z_PropertyMixin._query_paramsZnoAclc                 C   sf   |  |}| j}||d< t|||||d |  }t|||d |j| j|||	|
| d}| | dS )a<  Reload properties from Cloud Storage.

        If :attr:`user_project` is set, bills the API request to that project.

        :type client: :class:`~google.cloud.storage.client.Client` or
                      ``NoneType``
        :param client: the client to use. If not passed, falls back to the
                       ``client`` stored on the current object.

        :type projection: str
        :param projection: (Optional) If used, must be 'full' or 'noAcl'.
                           Defaults to ``'noAcl'``. Specifies the set of
                           properties to return.

        :type if_etag_match: Union[str, Set[str]]
        :param if_etag_match: (Optional) See :ref:`using-if-etag-match`

        :type if_etag_not_match: Union[str, Set[str]])
        :param if_etag_not_match: (Optional) See :ref:`using-if-etag-not-match`

        :type if_generation_match: long
        :param if_generation_match:
            (Optional) See :ref:`using-if-generation-match`

        :type if_generation_not_match: long
        :param if_generation_not_match:
            (Optional) See :ref:`using-if-generation-not-match`

        :type if_metageneration_match: long
        :param if_metageneration_match:
            (Optional) See :ref:`using-if-metageneration-match`

        :type if_metageneration_not_match: long
        :param if_metageneration_not_match:
            (Optional) See :ref:`using-if-metageneration-not-match`

        :type timeout: float or tuple
        :param timeout:
            (Optional) The amount of time, in seconds, to wait
            for the server response.  See: :ref:`configuring_timeouts`

        :type retry: google.api_core.retry.Retry or google.cloud.storage.retry.ConditionalRetryPolicy
        :param retry:
            (Optional) How to retry the RPC. See: :ref:`configuring_retries`
        
projectionr   r   r   r   )r
   r   )query_paramsheaderstimeoutretry_target_objectN)r-   r0    _add_generation_match_parametersr.   _add_etag_match_headersZ_get_resourcer*   _set_properties)r%   r+   r1   r
   r   r   r   r   r   r5   r6   r3   r4   api_responser   r   r   reload   s.    :
z_PropertyMixin.reloadc                 C   s   | j | || j|< dS )a  Update field of this object's properties.

        This method will only update the field provided and will not
        touch the other fields.

        It **will not** reload the properties from the server. The behavior is
        local only and syncing occurs via :meth:`patch`.

        :type name: str
        :param name: The field name to update.

        :type value: object
        :param value: The value being updated.
        N)r$   addr"   )r%   r   valuer   r   r   _patch_property   s    z_PropertyMixin._patch_propertyc                 C   s   || _ t | _dS )zSet the properties for the current object.

        :type value: dict or :class:`google.cloud.storage.batch._FutureDict`
        :param value: The properties to be set.
        N)r"   r#   r$   r%   r>   r   r   r   r:     s    z_PropertyMixin._set_propertiesc                    sd     |} j}d|d< t|||||d  fdd jD }	|j j|	| ||d}
 |
 dS )a  Sends all changed properties in a PATCH request.

        Updates the ``_properties`` with the response from the backend.

        If :attr:`user_project` is set, bills the API request to that project.

        :type client: :class:`~google.cloud.storage.client.Client` or
                      ``NoneType``
        :param client: the client to use. If not passed, falls back to the
                       ``client`` stored on the current object.

        :type if_generation_match: long
        :param if_generation_match:
            (Optional) See :ref:`using-if-generation-match`

        :type if_generation_not_match: long
        :param if_generation_not_match:
            (Optional) See :ref:`using-if-generation-not-match`

        :type if_metageneration_match: long
        :param if_metageneration_match:
            (Optional) See :ref:`using-if-metageneration-match`

        :type if_metageneration_not_match: long
        :param if_metageneration_not_match:
            (Optional) See :ref:`using-if-metageneration-not-match`

        :type timeout: float or tuple
        :param timeout:
            (Optional) The amount of time, in seconds, to wait
            for the server response.  See: :ref:`configuring_timeouts`

        :type retry: google.api_core.retry.Retry or google.cloud.storage.retry.ConditionalRetryPolicy
        :param retry:
            (Optional) How to retry the RPC. See: :ref:`configuring_retries`
        fullr1   r2   c                    s   i | ]}| j | qS r   )r"   ).0keyr)   r   r   
<dictcomp>V      z(_PropertyMixin.patch.<locals>.<dictcomp>)r3   r7   r5   r6   N)r-   r0   r8   r$   Z_patch_resourcer*   r:   )r%   r+   r   r   r   r   r5   r6   r3   Zupdate_propertiesr;   r   r)   r   patch  s(    .
z_PropertyMixin.patchc           
      C   sR   |  |}| j}d|d< t|||||d |j| j| j|||| d}	| |	 dS )a  Sends all properties in a PUT request.

        Updates the ``_properties`` with the response from the backend.

        If :attr:`user_project` is set, bills the API request to that project.

        :type client: :class:`~google.cloud.storage.client.Client` or
                      ``NoneType``
        :param client: the client to use. If not passed, falls back to the
                       ``client`` stored on the current object.

        :type if_generation_match: long
        :param if_generation_match:
            (Optional) See :ref:`using-if-generation-match`

        :type if_generation_not_match: long
        :param if_generation_not_match:
            (Optional) See :ref:`using-if-generation-not-match`

        :type if_metageneration_match: long
        :param if_metageneration_match:
            (Optional) See :ref:`using-if-metageneration-match`

        :type if_metageneration_not_match: long
        :param if_metageneration_not_match:
            (Optional) See :ref:`using-if-metageneration-not-match`

        :type timeout: float or tuple
        :param timeout:
            (Optional) The amount of time, in seconds, to wait
            for the server response.  See: :ref:`configuring_timeouts`

        :type retry: google.api_core.retry.Retry or google.cloud.storage.retry.ConditionalRetryPolicy
        :param retry:
            (Optional) How to retry the RPC. See: :ref:`configuring_retries`
        rA   r1   r2   )r3   r5   r6   r7   N)r-   r0   r8   Z_put_resourcer*   r"   r:   )
r%   r+   r   r   r   r   r5   r6   r3   r;   r   r   r   updatec  s&    .
z_PropertyMixin.update)N)__name__
__module____qualname____doc__r&   propertyr*   r+   r,   r-   r.   r0   r   r   r<   r?   r:   r	   rF   rG   r   r   r   r   r!   h   sR   




	
T
Ir!   c                    s"    fdd} fdd}t ||S )zHCreate a property descriptor around the :class:`_PropertyMixin` helpers.c                    s   | j  S )zScalar property getter.)r"   r   r)   	fieldnamer   r   _getter  s    z!_scalar_property.<locals>._getterc                    s   |   | dS )zScalar property setter.N)r?   r@   rM   r   r   _setter  s    z!_scalar_property.<locals>._setter)rL   )rN   rO   rP   r   rM   r   _scalar_property  s    rQ       c                 C   s0   |  |}t|dkr,|| |  |}q
dS )a  Read blocks from a buffer and update a hash with them.

    :type buffer_object: bytes buffer
    :param buffer_object: Buffer containing bytes used to update a hash object.

    :type hash_obj: object that implements update
    :param hash_obj: A hash object (MD5 or CRC32-C).

    :type digest_block_size: int
    :param digest_block_size: The block size to write to the hash.
                              Defaults to 8192.
    r   N)readlenrG   )buffer_objecthash_objZdigest_block_sizeblockr   r   r   _write_buffer_to_hash  s    

rX   c                 C   s"   t  }t| | | }t|S )a  Get MD5 hash of bytes (as base64).

    :type buffer_object: bytes buffer
    :param buffer_object: Buffer containing bytes used to compute an MD5
                          hash (as base64).

    :rtype: str
    :returns: A base64 encoded digest of the MD5 hash.
    )r   rX   digestbase64	b64encode)rU   rV   Zdigest_bytesr   r   r   _base64_md5hash  s    

r\   c                 K   sB   t D ]8\}}||}|durt|tr.|g}d|| |< qdS )zAdd generation match parameters into the given parameters list.

    :type headers: dict
    :param headers: Headers dict.

    :type match_parameters: dict
    :param match_parameters: if*etag*match parameters to add.
    N, )_ETAG_MATCH_PARAMETERSr   
isinstancestrjoin)r4   match_parameterssnakecase_nameheader_namer>   r   r   r   r9     s    	

r9   c                 K   sZ   t D ]P\}}||}|durt| tr8| ||f qt| trL|| |< qtdqdS )ab  Add generation match parameters into the given parameters list.

    :type parameters: list or dict
    :param parameters: Parameters list or dict.

    :type match_parameters: dict
    :param match_parameters: if*generation*match parameters to add.

    :raises: :exc:`ValueError` if ``parameters`` is not a ``list()``
             or a ``dict()``.
    Nz5`parameters` argument should be a dict() or a list().)_GENERATION_MATCH_PARAMETERSr   r_   listappenddictr   )
parametersrb   rc   Zcamelcase_namer>   r   r   r   r8     s    



r8   c                  K   sb   t dd |  D dkr^dd |  D }d|dd }|d }d	| d
| }t|dS )zRaise ``ValueError`` exception if more than one parameter was set.

    :type error: :exc:`ValueError`
    :param error: Description of which fields were set

    :raises: :class:`~ValueError` containing the fields that were set
    c                 s   s   | ]}|d uV  qd S r   r   )rB   argr   r   r   	<genexpr>  rE   z._raise_if_more_than_one_set.<locals>.<genexpr>   c                 S   s   g | ]}d | d qS )'r   )rB   r   r   r   r   
<listcomp>  rE   z/_raise_if_more_than_one_set.<locals>.<listcomp>r]   Nr   zPass at most one of z and )sumvalueskeysra   r   )kwargsZescaped_keysZkeys_but_lastlast_keymsgr   r   r   _raise_if_more_than_one_set	  s    ru   c                 C   s&   t | }|jr|jr| S | d|  S )a!  Helper to build bucket bound hostname URL.

    :type host: str
    :param host: Host name.

    :type scheme: str
    :param scheme: (Optional) Web scheme. If passed, use it
                   as a scheme in the result URL.

    :rtype: str
    :returns: A bucket bound hostname URL.
    z://)r   schemenetloc)hostrv   Z	url_partsr   r   r   _bucket_bound_hostname_url  s    ry   c                 C   s`   | dur|durt dnB| dur<tj| j| j| j| jdS |durPtj|dS tjddS dS )a~  Convert google.api.core.Retry to google.resumable_media.RetryStrategy.

    Custom predicates are not translated.

    :type retry: google.api_core.Retry
    :param retry: (Optional) The google.api_core.Retry object to translate.

    :type num_retries: int
    :param num_retries: (Optional) The number of retries desired. This is
        supported for backwards compatibility and is mutually exclusive with
        `retry`.

    :rtype: google.resumable_media.RetryStrategy
    :returns: A RetryStrategy with all applicable attributes copied from input,
              or a RetryStrategy with max_retries set to 0 if None was input.
    Nz6num_retries and retry arguments are mutually exclusive)Z	max_sleepZmax_cumulative_retryZinitial_delay
multiplier)max_retriesr   )r   r   ZRetryStrategyZ_maximumZ	_deadlineZ_initialZ_multiplier)r6   Znum_retriesr   r   r   (_api_core_retry_to_resumable_media_retry0  s    
r|   c                   C   s   dt t  S )Nzgccl-invocation-id/)r`   r   r   r   r   r   _get_invocation_idR  s    r}   application/json; charset=UTF-8c                 C   s"   dd| |  dt   ||p|dS )zGet the headers for a request.

    Args:
        user_agent (str): The user-agent for requests.
    Returns:
        Dict: The headers to be used for the request.
    zapplication/jsonzgzip, deflate )AcceptzAccept-Encodingz
User-AgentzX-Goog-API-Clientzcontent-typezx-upload-content-type)r}   )
user_agentcontent_typeZx_upload_content_typer   r   r   _get_default_headersV  s    r   )rR   )N)N)r~   N)*rK   rZ   hashlibr   r   urllib.parser   uuidr   Zgoogler   Zgoogle.authr   Zgoogle.cloud.storage.constantsr   Zgoogle.cloud.storage.retryr   r	   r   Z_API_ENDPOINT_OVERRIDE_ENV_VARZ_API_VERSION_OVERRIDE_ENV_VARr   r   Z_API_VERSIONr^   re   Z_NUM_RETRIES_MESSAGEr   r   r    objectr!   rQ   rX   r\   r9   r8   ru   ry   r|   r}   r   r   r   r   r   <module>   sN     B


"  