view tools/load_tracker.py @ 5525:bb7865241f8a

Make CSV import/export compatible across Python versions (also RDBMS journals) (issue 2550976, issue 2550975). The roundup-admin export and import commands are used for migrating between different database backends. It is desirable that they should be usable also for migrations between Python 2 and Python 3, and in some cases (e.g. with the anydbm backend) this may be required. To be usable for such migrations, the format of the generated CSV files needs to be stable, meaning the same as currently used with Python 2. The export process uses repr() to produce the fields in the CSV files and eval() to convert them back to Python data structures. repr() of strings with non-ASCII characters produces different results for Python 2 and Python 3. This patch adds repr_export and eval_import functions to roundup/anypy/strings.py which provide the required operations that are just repr() and eval() in Python 2, but are more complicated in Python 3 to use data representations compatible with Python 2. These functions are then used in the required places for export and import. repr() and eval() are also used in storing the dict of changed values in the journal for the RDBMS backends. It is similarly desirable that the database be compatible between Python 2 and Python 3, so that export and import do not need to be used for a migration between Python versions for non-anydbm back ends. Thus, this patch changes rdbms_common.py in the places involved in storing journals in the database, not just in those involved in import/export. Given this patch, import/export with non-ASCII characters appear based on some limited testing to work across Python versions, and an instance using the sqlite backend appears to be compatible between Python versions without needing import/export, *if* the sessions/otks databases (which use anydbm) are deleted when changing Python version.
author Joseph Myers <jsm@polyomino.org.uk>
date Sun, 02 Sep 2018 23:48:04 +0000
parents 2120f77554d5
children e1dfd21f2252
line wrap: on
line source

#! /usr/bin/env python
'''
Usage: %s <tracker home> <N>

Load up the indicated tracker with N issues and N/100 users.
'''

from __future__ import print_function
import sys, os, random
from roundup import instance

# open the instance
if len(sys.argv) < 2:
    print("Error: Not enough arguments")
    print(__doc__.strip()%(sys.argv[0]))
    sys.exit(1)
tracker_home = sys.argv[1]
N = int(sys.argv[2])

# open the tracker
tracker = instance.open(tracker_home)
db = tracker.open('admin')
db.tx_Source = "cli"

priorities = db.priority.list()
statuses = db.status.list()
resolved_id = db.status.lookup('resolved')
statuses.remove(resolved_id)

names = ['alpha', 'beta', 'gamma', 'delta', 'epsilon', 'zeta', 'eta', 
'theta', 'iota', 'kappa', 'lambda', 'mu', 'nu', 'xi', 'omicron', 'pi',
'rho']

titles = '''Lorem ipsum dolor sit amet, consectetuer adipiscing elit.
Duis nibh purus, bibendum sed, condimentum ut, bibendum ut, risus.
Fusce pede enim, nonummy sit amet, dapibus a, blandit eget, metus.
Nulla risus.
Vivamus tincidunt.
Donec consequat convallis quam.
Sed convallis vehicula felis.
Aliquam laoreet, dui quis pharetra vehicula, magna justo.
Euismod felis, eu adipiscing eros metus id tortor.
Suspendisse et turpis.
Aenean non felis.
Nam egestas eros.
Integer tellus quam, mattis ac, vestibulum sed, egestas quis, mauris.
Nulla tincidunt diam sit amet dui.
Nam odio mauris, dignissim vitae, eleifend eu, consectetuer id, risus.
Suspendisse potenti.
Donec tincidunt.
Vestibulum gravida.
Fusce luctus, neque id mattis fringilla, purus pede sodales pede.
Quis ultricies urna odio sed orci.'''.splitlines()

try:
    try:
        db.user.lookup('alpha0')
    except:
        # add some users
        M = N//100
        for i in range(M):
            print('\ruser', i, '       ', end=' ')
            sys.stdout.flush()
            if i//17 == 0:
                db.user.create(username=names[i%17])
            else:
                db.user.create(username=names[i%17]+str(i//17))

    # assignable user list
    users = db.user.list()
    users.remove(db.user.lookup('anonymous'))
    print()

    # now create the issues
    for i in range(N):
        print('\rissue', i, '       ', end=' ')
        sys.stdout.flush()
        # in practise, about 90% of issues are resolved
        if random.random() > .9:
            status = random.choice(statuses)
        else:
            status = resolved_id
        db.issue.create(
            title=random.choice(titles),
            priority=random.choice(priorities),
            status=status,
            assignedto=random.choice(users))
        if not i%1000:
            db.commit()
    print()

    db.commit()
finally:
    db.close()

# vim: set filetype=python ts=4 sw=4 et si

Roundup Issue Tracker: http://roundup-tracker.org/