Mercurial > p > roundup > code
view roundup/scripts/roundup_demo.py @ 6431:ada1edcc9132
issue2551142 - Import ... unique constraint failure.
Full title: Import of retired node with username after active node
fails with unique constraint failure.
Fix this in two ways:
1) sort export on keyname, retired status so that retired nodes for a
given keyname are before the acive node in the export file.
This stops generating a broken export.
2) handle importing a broken export by deactivating/fixing up/clearing
the active record's unique index entry temporarily. Redo the
import of the retired node and resetting the active record to active.
The fixup changes the unique index (keyvalue, __retired__) from
(keyvalue, 0) to (keyvalue, -1). Then it retries the failed import of
a retired record with keyvalue. I use -1 in case something goes wrong,
It makes the record stand out in the database allowing hand recovery
if needed. Rather than using -1 I could just use the id of the record
like a normal retirement does.
If the retry of the import fails (raises exception), reset the active
record from -1 back to 0 and raise the exception.
If it succeeds, reset the active record from -1 back to 0 and continue
the import process.
Reset __retired__ from -1 to 0 on every import. I don't think the
performance loss from resetting on every exception matters as there
should be very few exceptions. Also this makes the code more
understandable. There is no reason to leave the -1 value in place and
do a bulk rest of -1 to 0 after the class csv file is loaded.
Also if a fixup is needed it is logged at level info with the rest of
the database logging. Also success of the fixup is logged. Fixup
failure generates a propagated exception.
| author | John Rouillard <rouilj@ieee.org> |
|---|---|
| date | Mon, 07 Jun 2021 09:58:39 -0400 |
| parents | d09a1d6a3bd9 |
| children | 062a54eeb0a1 |
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#! /usr/bin/env python # # Copyright 2004 Richard Jones (richard@mechanicalcat.net) # DEFAULT_HOME = './demo' DEFAULT_TEMPLATE = 'classic' import sys # --- patch sys.path to make sure 'import roundup' finds correct version import os.path as osp thisdir = osp.dirname(osp.abspath(__file__)) rootdir = osp.dirname(osp.dirname(thisdir)) if (osp.exists(thisdir + '/__init__.py') and osp.exists(rootdir + '/roundup/__init__.py')): # the script is located inside roundup source code sys.path.insert(0, rootdir) # --/ from roundup import admin, configuration, demo, instance from roundup.i18n import _ from roundup.anypy.my_input import my_input from roundup import version_check def run(): home = DEFAULT_HOME template = DEFAULT_TEMPLATE nuke = sys.argv[-1] == 'nuke' # if there is no tracker in home, force nuke try: instance.open(home) except configuration.NoConfigError: nuke = 1 # if we are to create the tracker, prompt for home if nuke: if len(sys.argv) > 2: backend = sys.argv[-2] else: backend = 'anydbm' # FIXME: i'd like to have an option to abort the tracker creation # say, by entering a single dot. but i cannot think of # appropriate prompt for that. home = my_input( _('Enter directory path to create demo tracker [%s]: ') % home) if not home: home = DEFAULT_HOME templates = admin.AdminTool().listTemplates().keys() template = my_input( _('Enter tracker template to use (one of (%s)) [%s]: ') % (','.join(templates), template)) if not template: template = DEFAULT_TEMPLATE # install demo.install_demo(home, backend, admin.AdminTool().listTemplates()[template]['path']) # run demo.run_demo(home) if __name__ == '__main__': run() # vim: set et sts=4 sw=4 :