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편집 파일: base.cpython-38.pyc
U 0?�f9� � @ s0 d dl mZ d dlmZ d dlZd dlZd dlZd dlZd dlZd dl m Z d dl m Z d dl m Z d dl mZ d dl mZ d d l mZ d d l mZ d d l mZ d d l mZ d d l mZ d dl mZ d dl mZ ddlmZ ddlmZ ddlmZ ddlm Z ddlm Z ddlm Z e�rrddlm Z ddlm Z ddlm!Z! ddl"m#Z# dd l"m$Z$ dd l%m&Z& dd l%m'Z' z>e j(�r�d d l)m*Z* d d l)m+Z+ nd d l,m*Z* d d l,m+Z+ W n e-k �r� dZ*Y nX e�.d!�Z/e�.d"�Z0e�.d#�Z1e�.d$�Z2d%Z3e�.d&�Z4e�.d'�Z5G d(d)� d)�Z6G d*d+� d+ej!�Z7dS ),� )� annotations)�contextmanagerN)� ModuleType)�Any)�cast)�Iterator)�List)�Mapping)�Optional)�Sequence)�Set)�Tuple)� TYPE_CHECKING)�Union� ��revision)� write_hooks� )�util)� migration)�compat)�not_none)� _GetRevArg)� _RevIdType)�Revision)�Config)�MessagingOptions)� RevisionStep)� StampStep)�ZoneInfo)�ZoneInfoNotFoundErrorz (?!\.\#|__init__)(.*\.py)(c|o)?$z(?!\.\#|__init__)(.*\.py)$z([a-f0-9]+)\.py$z\w+z%(rev)s_%(slug)sz , *|(?: +)z , *|(?: +)|\:c @ s$ e Zd ZdZedddddddedej�f dddd d dd d d dd d� dd�Ze dd�dd��Z ej dd�dd��Z dd�dd�Z edd d�d d ��Zedhd d d d d d d �d d!��Zdidddd$�d%d&�Zd'd(d)�d*d+�Zd,d-d)�d.d/�Zdd0d)�d1d2�Zd d3d)�d4d5�Zd6d6d7dd8�d9d:�Zd d�d;d<�Zd=d�d>d?�Zd d�d@dA�Zd=d�dBdC�ZdddDdE�dFdG�Z dd dDdE�dHdI�Z dJdJdKdL�dMdN�Z d d�dOdP�Z e dd�dQdR��Z ddd7d dS�dTdU�Z!ddd dV�dWdX�Z"dd dY�dZd[�Z#d\d�d]d^�Z$djdd d_d`d_d d_d7dadb� dcdd�Z%ddd d\dde�dfdg�Z&dS )k�ScriptDirectoryaH Provides operations upon an Alembic script directory. This object is useful to get information as to current revisions, most notably being able to get at the "head" revision, for schemes that want to test if the current revision in the database is the most recent:: from alembic.script import ScriptDirectory from alembic.config import Config config = Config() config.set_main_option("script_location", "myapp:migrations") script = ScriptDirectory.from_config(config) head_revision = script.get_current_head() �( NF�utf-8r �strz Optional[int]zOptional[List[str]]�boolz Optional[str]zOptional[Mapping[str, str]]�None) �dir� file_template�truncate_slug_length�version_locations� sourceless�output_encoding�timezone� hook_config�recursive_version_locations�messaging_opts�returnc C sv || _ || _|| _|pd| _|| _|| _t�| j�| _ || _ || _ | | _ | | _ t�|tj�srt�dtj�|� ��d S )Nr# zVPath doesn't exist: %r. Please use the 'init' command to create a new scripts folder.)r( r) r+ r* r, r- r Z RevisionMap�_load_revisions� revision_mapr. r/ r0 r1 �os�access�F_OKr � CommandError�path�abspath) �selfr( r) r* r+ r, r- r. r/ r0 r1 � r< �A/opt/hc_python/lib/python3.8/site-packages/alembic/script/base.py�__init__N s" ��zScriptDirectory.__init__�r2 c C s* | j }t|�dkr t�d��n|d S d S )Nr z"Multiple version_locations presentr )�_version_locations�lenr r8 )r; �locr< r< r= �versionsp s zScriptDirectory.versionsz Sequence[str]c C s4 | j rdd� | j D �S tj�tj�| jd��fS d S )Nc S s g | ]}t j�t�|���qS r< )r5 r9 r: r �coerce_resource_to_filename)�.0�locationr< r< r= � <listcomp>{ s �z6ScriptDirectory._version_locations.<locals>.<listcomp>rC )r+ r5 r9 r: �joinr( �r; r< r< r= r@ x s �z"ScriptDirectory._version_locationszIterator[Script]c c s� | j rdd� | jD �}n| jg}t� }|D ]z}t�| |�D ]h}tj�|�}||krbt � d| � q:|� |� tj� |�}tj� |�}t�| ||�}|d kr�q:|V q:q*d S )Nc S s g | ]}t j�|�r|�qS r< )r5 r9 �exists)rE �versr< r< r= rG � s �z3ScriptDirectory._load_revisions.<locals>.<listcomp>zJFile %s loaded twice! ignoring. Please ensure version_locations is unique.)r+ r@ rC �set�Script� _list_py_dirr5 r9 �realpathr �warn�add�basename�dirname�_from_filename) r; �pathsZdupesrK � file_path� real_path�filename�dir_name�scriptr< r< r= r3 � s. � �� z ScriptDirectory._load_revisionsr )�configr2 c C sR |� d�}|dkr t�d��|� d�}|dk r8t|�}nd}|� d�}|r�|� d�}ddtjdd d �}z || }W n0 tk r� } ztd | �| �W 5 d} ~ X Y q�X |dkr�t� |�} q�d d � |� |�D �} nd} |� d�} | r�t t � | ��t j dd�< |� d�dk} tt�|�|� dt�||� d�dk|� dd�| |� d�|�di �| |jd� S )z�Produce a new :class:`.ScriptDirectory` given a :class:`.Config` instance. The :class:`.Config` need only have the ``script_location`` key present. �script_locationNz0No 'script_location' key found in configuration.r* r+ �version_path_separator� �:�;)N�spacer5 r_ r` zV'%s' is not a valid value for version_path_separator; expected 'space', 'os', ':', ';'c S s g | ] }|r|�qS r< r< )rE �xr< r< r= rG � s z/ScriptDirectory.from_config.<locals>.<listcomp>�prepend_sys_pathr r0 �truer) r, r- r$ r. �post_write_hooks) r) r* r, r- r+ r. r/ r0 r1 )Zget_main_optionr r8 �intr5 �pathsep�KeyError� ValueError�_split_on_space_comma�split�list�_split_on_space_comma_colon�sysr9 r" rD �_default_file_templateZ get_sectionr1 ) �clsr[ r\ Ztslr* Zversion_locations_strr] Z split_on_pathZ split_charZker+ rc Zrvlr< r< r= � from_config� sz � �������� � � �zScriptDirectory.from_configzIterator[None])�ancestor�multiple_heads�start�end� resolutionr2 c c sJ z d V W �n8 t jk rz } zN|d kr4tt|j�}|d krHtt|j�}|sPd}|||d� }t�|�|�W 5 d }~X Y n� t jk r� } z4|s�d}||p�|j t� |j �d� }t�|�|�W 5 d }~X Y nz t j k �r } z"|d kr�d|j }t�|�|�W 5 d }~X Y n8 t j k �rD } zt�| jd �| �W 5 d } ~ X Y nX d S )NzgRequested range %(start)s:%(end)s does not refer to ancestor/descendant revisions along the same branch�rt ru z�Multiple head revisions are present for given argument '%(head_arg)s'; please specify a specific target revision, '<branchname>@%(head_arg)s' to narrow to a specific head, or 'heads' for all heads)Zhead_arg�headsz(Can't locate revision identified by '%s'r )r ZRangeNotAncestorErrorr r �lower�upperr r8 Z MultipleHeads�argument�format_as_commarx �ResolutionError� RevisionError�args) r; rr rs rt ru rv Zrna�mh�re�errr< r< r= �_catch_revision_errors� s: � � � � z&ScriptDirectory._catch_revision_errors�baserx )r� �headr2 c c sD | j ||d��, | jj||ddd�D ]}tt|�V q$W 5 Q R X dS )a- Iterate through all revisions. :param base: the base revision, or "base" to start from the empty revision. :param head: the head revision; defaults to "heads" to indicate all head revisions. May also be "head" to indicate a single head revision. rw TF)Z inclusiveZassert_relative_lengthN)r� r4 �iterate_revisionsr rM )r; r� r� �revr< r< r= �walk_revisions s � z ScriptDirectory.walk_revisionsr zTuple[Script, ...])�id_r2 c C s: | � � �( tttdf | j�|��W 5 Q R � S Q R X dS )z�Return the :class:`.Script` instance with the given rev identifier, symbolic name, or sequence of identifiers. .N)r� r r rM r4 � get_revisions�r; r� r< r< r= r� 1 s �z ScriptDirectory.get_revisionszTuple[str, ...]z Set[Script]c C s6 | � � �$ ttt | j�|��W 5 Q R � S Q R X d S �N)r� r r rM r4 Z_get_all_currentr� r< r< r= �get_all_current< s z ScriptDirectory.get_all_currentrM c C s2 | � � � tt| j�|��W 5 Q R � S Q R X dS )z�Return the :class:`.Script` instance with the given rev id. .. seealso:: :meth:`.ScriptDirectory.get_revisions` N)r� r rM r4 � get_revisionr� r< r< r= r� @ s z ScriptDirectory.get_revisionz%Optional[Union[str, Tuple[str, ...]]]c C sD | � � � | j�|�\}}W 5 Q R X |s,dS |dkr8|S |d S dS )z[Convert a symbolic revision, i.e. 'head' or 'base', into an actual revision number.Nrx r )r� r4 Z_resolve_revision_number)r; r� r� � branch_namer< r< r= �as_revision_numberL s z"ScriptDirectory.as_revision_numberz!Union[str, Tuple[str, ...], None]r )rz ry �kwr2 c K s t tt | jj||f|��S )a� Iterate through script revisions, starting at the given upper revision identifier and ending at the lower. The traversal uses strictly the `down_revision` marker inside each migration script, so it is a requirement that upper >= lower, else you'll get nothing back. The iterator yields :class:`.Script` objects. .. seealso:: :meth:`.RevisionMap.iterate_revisions` )r r rM r4 r� )r; rz ry r� r< r< r= r� ] s �z!ScriptDirectory.iterate_revisionsc C s. | j dd�� | j�� W 5 Q R � S Q R X dS )aG Return the current head revision. If the script directory has multiple heads due to branching, an error is raised; :meth:`.ScriptDirectory.get_heads` should be preferred. :return: a string revision number. .. seealso:: :meth:`.ScriptDirectory.get_heads` z}The script directory has multiple heads (due to branching).Please use get_heads(), or merge the branches using alembic merge.�rs N)r� r4 �get_current_headrI r< r< r= r� w s �z ScriptDirectory.get_current_head� List[str]c C s t | jj�S )aU Return all "versioned head" revisions as strings. This is normally a list of length one, unless branches are present. The :meth:`.ScriptDirectory.get_current_head()` method can be used normally when a script directory has only one head. :return: a tuple of string revision numbers. )rl r4 rx rI r< r< r= � get_heads� s zScriptDirectory.get_headsc C s4 | � � }t|�dkr t�d��n|r,|d S dS dS )a# Return the "base" revision as a string. This is the revision number of the script that has a ``down_revision`` of None. If the script directory has multiple bases, an error is raised; :meth:`.ScriptDirectory.get_bases` should be preferred. r z@The script directory has multiple bases. Please use get_bases().r N)� get_basesrA r r8 )r; �basesr< r< r= �get_base� s �zScriptDirectory.get_basec C s t | jj�S )z�return all "base" revisions as strings. This is the revision number of all scripts that have a ``down_revision`` of None. )rl r4 r� rI r< r< r= r� � s zScriptDirectory.get_baseszList[RevisionStep])� destination� current_revr2 c sP � j d|d��8 � j||dd�}� fdd�tt|��D �W 5 Q R � S Q R X d S )NzFDestination %(end)s is not a valid upgrade target from current head(s)�rr ru T)Z implicit_basec s g | ]}t j�� j|��qS r< )r � MigrationStepZupgrade_from_scriptr4 �rE rZ rI r< r= rG � s � �z1ScriptDirectory._upgrade_revs.<locals>.<listcomp>)r� r� �reversedrl �r; r� r� �revsr< rI r= � _upgrade_revs� s � � �z ScriptDirectory._upgrade_revsc sH � j d|d��0 � j||dd�}� fdd�|D �W 5 Q R � S Q R X d S )NzHDestination %(end)s is not a valid downgrade target from current head(s)r� T)Zselect_for_downgradec s g | ]}t j�� j|��qS r< )r r� Zdowngrade_from_scriptr4 r� rI r< r= rG � s � �z3ScriptDirectory._downgrade_revs.<locals>.<listcomp>)r� r� r� r< rI r= �_downgrade_revs� s � � �z ScriptDirectory._downgrade_revsr zList[StampStep])r rx r2 c s� � j dd���� � �|�}g }|s&d}g }t�|�D ]*}|r4|�� jjttt |�|dd�� q4t� |�}� �|�pxd g}|D �]}|d kr�|�� fdd�|D �� q~n ||kr�q~t � j� |g��} t � j� |g��} | �|��r"| �|�r�t�dd� |D �} t�| |jd d � j�} |�| � q~q~| �|��r`d d� |D �} t�| |jdd � j�} |�| � q~q~t�d |jdd� j�} |�| � q~q~|W 5 Q R � S Q R X d S ) NzCMultiple heads are present; please specify a single target revisionr� r� T)Zinclude_dependenciesc s" g | ]}t �|jd dd� j��qS )NFT)r r r r4 �rE r� rI r< r= rG s ��z/ScriptDirectory._stamp_revs.<locals>.<listcomp>c S s g | ] }|j �qS r< r r� r< r< r= rG s Fc S s g | ] }|j �qS r< r r� r< r< r= rG ( s r< )r� r� r �to_tuple�extendr4 Zfilter_for_lineager r rM Z unique_listrL Z_get_descendant_nodesZ_get_ancestor_nodes� intersection�AssertionErrorr r r �append) r; r rx Z heads_revsZstepsZfiltered_headsr� Zdests�destZ descendantsZ ancestorsZ todo_heads�stepr< rI r= � _stamp_revs� s� � �� �� � � � � zScriptDirectory._stamp_revsc C s t �| jd� dS )z�Run the script environment. This basically runs the ``env.py`` script present in the migration environment. It is called exclusively by the command functions in :mod:`alembic.command`. �env.pyN)r �load_python_filer( rI r< r< r= �run_env= s zScriptDirectory.run_envc C s t j�t j�| jd��S )Nr� )r5 r9 r: rH r( rI r< r< r= �env_py_locationH s z ScriptDirectory.env_py_location)�srcr� r� r2 c K sB t jdtj�|�� �f| j�� t j||| jf|� W 5 Q R X d S �Nz Generating )r �statusr5 r9 r: r1 Ztemplate_to_filer- )r; r� r� r� r< r< r= �_generate_templateL s ��z"ScriptDirectory._generate_template)r� r� r2 c C s: t jdtj�|�� �f| j�� t�||� W 5 Q R X d S r� )r r� r5 r9 r: r1 �shutil�copy)r; r� r� r< r< r= � _copy_fileR s ��zScriptDirectory._copy_file)r9 r2 c C sH t j�|�}t j�|�sDtjd|� �f| j�� t �|� W 5 Q R X d S )NzCreating directory )r5 r9 r: rJ r r� r1 �makedirs)r; r9 r< r< r= �_ensure_directoryX s ��z!ScriptDirectory._ensure_directoryzdatetime.datetimec C s� | j d k r�td kr t�d��zt| j �}W n tk rB d }Y nX |d kr�zt| j �� �}W n& tk r� t�d| j �d �Y nX tj�� jtj j d�� |�}n tj� � }|S )NzePython >= 3.9 is required for timezone support or the 'backports.zoneinfo' package must be installed.zCan't locate timezone: %s)�tzinfo) r. r r r8 r! rz �datetime�utcnow�replace�utc� astimezone�now)r; r� � create_dater< r< r= �_generate_create_date` s4 � �� ��� z%ScriptDirectory._generate_create_datezOptional[_RevIdType]�Optional[bool]�Optional[Script]) �revid�messager� �splice� branch_labels� version_path� depends_onr� r2 c s |dkr d}zt �|� W n6 tjk rP } zt�| jd �| �W 5 d} ~ X Y nX � jdd��: tt t d df � j � |��} | D ]} | dks�t �q�W 5 Q R X tt| ��t| �kr�t�d ��� �� } |dk�r$t� j�d k�r | D ].} | dk r�t| t �s�t �tj�| j�} �q$q�t�d ��n� j}tj�tj�|��}� jD ] }tj�|�|k�r> �ql�q>t�d | ��� j�r~� �|� � �|||| �}|�s�| D ](} | dk �r�| j �s�t�d | j ���q�|�r � �� �( dd� � fdd�t� |�D �D �}W 5 Q R X nd}� j tj� � j d�|ft!|�t�"t#dd� | D ���t�$|�t�"|�| tj%|dk �rZ|ndd�|�� � j&}|�r�t'�(||� zt �)� |�}W n8 tjk �r� } zt�| jd �| �W 5 d} ~ X Y nX |dk�r�dS |�r�|j*�s�t�d|j||jf ��� j �+|� |S )a� Generate a new revision file. This runs the ``script.py.mako`` template, given template arguments, and creates a new file. :param revid: String revision id. Typically this comes from ``alembic.util.rev_id()``. :param message: the revision message, the one passed by the -m argument to the ``revision`` command. :param head: the head revision to generate against. Defaults to the current "head" if no branches are present, else raises an exception. :param splice: if True, allow the "head" version to not be an actual head; otherwise, the selected head must be a head (e.g. endpoint) revision. Nr� r z{Multiple heads are present; please specify the head revision on which the new revision should be based, or perform a merge.r� r .r� z"Duplicate head revisions specifiedr zAMultiple version locations present, please specify --version-pathz7Path %s is not represented in current version locationszeRevision %s is not a head revision; please specify --splice to create a new branch from this revisionc S s$ g | ] \}}||j kr|n|j�qS r< )r� r )rE r� �depr< r< r= rG � s ��z5ScriptDirectory.generate_revision.<locals>.<listcomp>c s g | ]}t � j�|��|f�qS r< )r r4 r� )rE r� rI r< r= rG � s �zscript.py.makoc s s | ]}|d k r|j nd V qd S r� r )rE �hr< r< r= � <genexpr>� s z4ScriptDirectory.generate_revision.<locals>.<genexpr>z empty message)Z up_revision� down_revisionr� r� r� �commar� z�Version %s specified branch_labels %s, however the migration file %s does not have them; have you upgraded your script.py.mako to include the 'branch_labels' section?),rM Z verify_rev_idr r~ r r8 r r� r r r r4 r� r� rA rL r� r@ � isinstancer5 r9 rS rC �normpathr: r+ r� � _rev_path�is_headZto_listr� rH r( r% Ztuple_rev_as_scalar�tupler� r| r/ r Z _run_hooks� _from_pathr� Z add_revision)r; r� r� r� r� r� r� r� r� r� rx r� r� Zhead_Z norm_pathZ vers_pathr9 Zresolved_depends_onre rZ r< rI r= �generate_revision| s� $� � � �� �� �� ��� � $ �� z!ScriptDirectory.generate_revision)r9 �rev_idr� r� r2 c C s� t |�� �}d�t�|pd���� }t|�| jkrP|d | j� �dd�d d }d| j ||||j |j |j |j |j|jd� }tj�||�S )N�_� r r z%s.py) r� �slug�epoch�year�month�day�hour�minute�second)rf � timestamprH �_slug_re�findallry rA r* �rsplitr) r� r� r� r� r� r� r5 r9 )r; r9 r� r� r� r� r� rX r< r< r= r� s& ���zScriptDirectory._rev_path)NNNNN)r� rx )NFNNN)'�__name__� __module__� __qualname__�__doc__ro r r � EMPTY_DICTr> �propertyrC Zmemoized_propertyr@ r3 � classmethodrq r r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r< r< r< r= r" : st ��$" P � . � ^ � r" c s e Zd ZU dZdddd�� fdd� Zded< ded< d Zd ed < edd �d d��Zedd �dd��Z edd �dd��Z dd �dd�Z d+ddddddd�dd�Z d,ddddddd�d d �Z dd �d d �Zed dd!d"�d#d$��Zed dd%d"�d&d'��Zed ddd!d(�d)d*��Z� ZS )-rM z�Represent a single revision file in a ``versions/`` directory. 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