EvgAddlZddlZddlmZmZddlmZddlmZddl m Z ddl m Z ddl mZmZmZmZd ZGd d ZdS) N) import_modulereload)apps)settings)MigrationGraph)MigrationRecorder)AmbiguityErrorBadMigrationErrorInconsistentMigrationHistoryNodeNotFoundError migrationsczeZdZdZ ddZedZdZdZdZ d Z d Z d Z d Z d ZdZddZdZdS)MigrationLoaderal Load migration files from disk and their status from the database. Migration files are expected to live in the "migrations" directory of an app. Their names are entirely unimportant from a code perspective, but will probably follow the 1234_name.py convention. On initialization, this class will scan those directories, and open and read the Python files, looking for a class called Migration, which should inherit from django.db.migrations.Migration. See django.db.migrations.migration for what that looks like. Some migrations will be marked as "replacing" another set of migrations. These are loaded into a separate set of migrations away from the main ones. If all the migrations they replace are either unapplied or missing from disk, then they are injected into the main set, replacing the named migrations. Any dependency pointers to the replaced migrations are re-pointed to the new migration. This does mean that this class MUST also talk to the database as well as to disk, but this is probably fine. We're already not just operating in memory. TFc|||_d|_d|_||_||_|r|dSdSN) connectiondisk_migrationsapplied_migrationsignore_no_migrationsreplace_migrations build_graph)selfrloadrrs X/var/www/pixelcanvas.ch/venv/lib/python3.11/site-packages/django/db/migrations/loader.py__init__zMigrationLoader.__init__-sU%#"&$8!"4            c|tjvrtj|dfStj|j}|dt dfS)z Return the path to the migrations module for the specified app_label and a boolean indicating if the module is specified in settings.MIGRATION_MODULE. T.F)rMIGRATION_MODULESrget_app_confignameMIGRATIONS_MODULE_NAME)cls app_labelapp_package_names rmigrations_modulez!MigrationLoader.migrations_module<sS 2 2 2-i8$> >#29==B ...0F0FGN Nrc i|_t|_t|_t jD]<}||j\}}| |j|jB|tj v} t|}t|ds |j|jt|dd:t|jt s |j|j|rt#|nd#t$$rW}|r|js#|sFt(|jdvr%|j|jYd}~Hd}~wwxYw|j|jdt/j|jD}|D]}|d|} t| } n7#t2$r*}dt5|vrt3d| z|d}~wwxYwt| dst7d |d |jd | ||j|j|j|f<>dS) z6Load the migrations from all INSTALLED_APPS from disk.N__path____file__rc2h|]\}}}|s |ddv|S)rz_~).0_r"is_pkgs r z,MigrationLoader.load_disk..osA#AtV#'q'"5"5"5"5"5rzbad magic numberz9Couldn't import %r as it appears to be a stale .pyc file. Migrationz Migration z in app z has no Migration class)rsetunmigrated_apps migrated_appsrget_app_configsr'labeladdsysmodulesrhasattrgetattr isinstancer)listrModuleNotFoundErrorrr#r"splitpkgutil iter_modules ImportErrorstrr r1) r app_config module_nameexplicit was_loadedmoduleemigration_namesmigration_namemigration_pathmigration_modules r load_diskzMigrationLoader.load_diskIs!"uu UU.00= = J$($:$::;K$L$L !K"$(()9:::$ 3J #&{33vz22(,,Z-=>>>6:t44>>#6NNN-'   !: %;qv||C?P?P%P%P(,,Z-=>>>HHHH  .   " ":#3 4 4 4'.';FO'L'LO #2  ,7KK!H '4^'D'D$$")SVV33))+9: !! /==++)>>:+;+;+;= %..&"($Z%5~%EFF# O= = s7D.. F8A F  F  F G00 H$:%HH$c*|jj||fS)z6Return the named migration or raise NodeNotFoundError.graphnodes)rr% name_prefixs r get_migrationzMigrationLoader.get_migrationsz ; 677rc,g}|jD]7\}}||kr,||r|||f8t|dkrt d|d|d|st d|d|d|j|dS)zZ Return the migration(s) which match the given app label and name_prefix. r z&There is more than one migration for 'z' with the prefix ''zThere is no migration for 'r)r startswithappendlenr KeyError)rr%rSresultsmigration_app_labelrKs rget_migration_by_prefixz'MigrationLoader.get_migration_by_prefixs 373G F F / "i//N4M4M55/ 3^DEEE w<}|d|dkr*|ddkr|j|||d?dS)z Internal dependencies need to be added first to ensure `__first__` dependencies find the correct root node. rr r_Tskip_validationN) dependenciesrQadd_dependency)rre migrationparents radd_internal_dependenciesz)MigrationLoader.add_internal_dependenciessf  , X XFayCF""vayK'?'? )))S&RV)WWW X XrcD|jD]Q}|d|dkr|||d}||j|||dR|jD]>}|||d}||j|||d?dS)NrTri)rkrgrQrl run_before)rrermrnchilds radd_external_dependenciesz)MigrationLoader.add_external_dependenciess, X XF1v""^^FCF33F! )))S&RV)WWW) W WENN5#a&11E  )))UCQU)VVV W Wrc ji_n-tj}|_t _i_jD]1\}}j |||j r |j|<2jD]\}} ||jD]\}} ||j rƉjD]\}}fd|j D}t|r |j|<nj|dt|st!|s!j||j j||j  jn'#t($r}i}jD]D\}}|j D]7}||t-|8E|j|vr||jt-}t!fd|D} | sfdd|D} t)d|j|jd|jd| |j|d}~wwxYwjdS) z Build a migration dependency graph using both the disk and database. You'll need to rebuild the graph if you apply migrations. This isn't usually a problem as generally migration stuff runs in a one-shot process. Nc"g|] }|jv Sr,)r)r-targetrs r z/MigrationLoader.build_graph..s.$$$z.MigrationLoader.build_graph.."s>""6?I!11""""""rz, c3 K|] }d|zV dS)z%s.%sNr,)r-cs rrzz.MigrationLoader.build_graph..&s&%F%Fagk%F%F%F%F%F%FrzMigration {0} depends on nonexistent node ('{1}', '{2}'). Django tried to replace migration {1}.{2} with any of [{3}] but wasn't able to because some of the replaced migrations are already applied.rr )rNrrrrrQ replacementsritemsadd_nodereplacesrorsrallpopanyremove_replaced_nodesremove_replacement_nodevalidate_consistencyr setdefaultr2r7nodegetjoinformatoriginensure_not_cyclic) rrecorderrermapplied_statusesexcreverse_replacementsreplaced candidates is_replacedtriess ` rrzMigrationLoader.build_graphs  ? "&(D # #(99H&.&A&A&C&CD #$%% "288:: 3 3NC J  Y / / /! 3)2!#&"288:: ; ;NC  * *3 : : : :"288:: ; ;NC  * *3 : : : :  " P"&"3"9"9";"; P PY$$$$FOFX$$$ '((;3.Cs8-.ALrzHMigration {}.{} is applied before its dependency {}.{} on database '{}'.rr N) rrrQrRnode_mapparentsr}rrr ralias)rrrrmrnrs @rcheck_consistent_historyz(MigrationLoader.check_consistent_history3s  %Z00--//   I 000*-i8@  ((!222262CF2K2T%%6228&%aL%aL"1I"1I&, 33   )    rcit}|jD]S\}}|vr|||t|Tfd|DS)z Look through the loaded graph and detect any conflicts - apps with more than one leaf migration. Return a dict of the app labels that conflict with the migration names that conflict. c<i|]}|t|Sr,)sorted)r-r% seen_appss r z4MigrationLoader.detect_conflicts..^s5   8AIvi 233   r)r2rQrbr7r)rconflicting_appsr%rKrs @rdetect_conflictsz MigrationLoader.detect_conflictsRs  55)-)>)>)@)@ G G %I~I%% $$Y///  CEE 2 2 6 6~ F F F F    EU    rNcF|j|||jS)z Return a ProjectState object representing the most recent state that the loaded migrations represent. See graph.make_state() for the meaning of "nodes" and "at_end". )rRat_end real_apps)rQ make_stater3)rrRrs r project_statezMigrationLoader.project_statebs-z$$$2F%   rctg}d}|D]\}}|jd|j5}|#||j|jfd}|s|||d}n|||d}dddn #1swxYwY||j |S)z Take a migration plan and return a list of collected SQL statements that represent the best-efforts version of that plan. NT) collect_sqlatomicF)r)r) r schema_editorrrr%r"applyunapplyextend collected_sql)rplan statementsstaterm backwardsrs rrzMigrationLoader.collect_sqlms9  $( ; ; Iy.. )9/ V= ..",in=e/E!V%OOE=dOSSEE%--e]PT-UUE V V V V V V V V V V V V V V V   m9 : : : :sABB B )TFT)NT)__name__ __module__ __qualname____doc__r classmethodr'rNrTr]rgrorsrrrrrr,rrrrs6"     O O[ OBBBH8884440CCC<XXX W W WS'S'S'j>       rr)r@r8 importlibrr django.appsr django.confrdjango.db.migrations.graphrdjango.db.migrations.recorderr exceptionsr r r r r#rr,rrrs ++++++++ 555555;;;;;;&mmmmmmmmmmr