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MySQL backend fixes for Python 3.
With Python 2, text sent to and from MySQL is treated as bytes in
Python. The database may be recorded by MySQL as having some other
encoding (latin1 being the default in some MySQL versions - Roundup
does not set an encoding explicitly, unlike in back_postgresql), but
as long as MySQL's notion of the connection encoding agrees with its
notion of the database encoding, no conversions actually take place
and the bytes are stored and returned as-is.
With Python 3, text sent to and from MySQL is treated as Python
Unicode strings. When the database and connection encoding is latin1,
that means the bytes stored in the database under Python 2 are
interpreted as latin1 and converted from that to Unicode, producing
incorrect results for any non-ASCII characters; furthermore, if trying
to store new non-ASCII data in the database under Python 3, any
non-latin1 characters produce errors.
This patch arranges for both the connection and database character
sets to be UTF-8 when using Python 3, and documents a need to export
and import the database when moving from Python 2 to Python 3 with
this backend.
| author | Joseph Myers <jsm@polyomino.org.uk> |
|---|---|
| date | Sun, 16 Sep 2018 16:19:20 +0000 |
| parents | 851d4306300d |
| children | 7017ea98930f |
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version: 2 jobs: build: docker: - image: circleci/buildpack-deps:18.04 - image: circleci/postgres:9.6-alpine-ram - image: circleci/mysql:5.7-ram environment: MYSQL_ALLOW_EMPTY_PASSWORD=true MYSQL_ROOT_HOST=% working_directory: ~/repo steps: - checkout - run: name: install packages command: | sudo apt-get update sudo apt-get install -y libgpgme-dev mysql-client-core-5.7 postgresql-client python3-gpg python3-mysqldb python3-pip python3-psycopg2 python3-pytest python3-pytest-cov python3-tz python3-venv python3-whoosh python3-xapian swig - run: name: install dependencies command: | python3 -m venv venv . venv/bin/activate pip3 install codecov - run: name: setup databases command: | psql -d postgresql://root@localhost/circle_test -c "CREATE ROLE rounduptest WITH CREATEDB LOGIN PASSWORD 'rounduptest';" mysql -h 127.0.0.1 -u root -e "GRANT ALL ON rounduptest.* TO rounduptest@'127.0.0.1' IDENTIFIED BY \"rounduptest\";" # patch host to 127.0.0.1 to force TCP connection to MySQL sed -i -e 's/\(config[.]RDBMS_HOST =\) "localhost"/\1 "127.0.0.1"/' test/db_test_base.py # HACK: workaround mysql bug: http://bugs.mysql.com/bug.php?id=74901 # needed for test_mysql.mysqlDBTest.testFilteringSpecialChars sed -i -e 's/CREATE DATABASE \%s/CREATE DATABASE \%s COLLATE utf8_general_ci/' roundup/backends/back_mysql.py - run: name: run tests command: | . venv/bin/activate py.test-3 -v test/ --cov=roundup environment: MYSQL_HOST: 127.0.0.1 - run: name: run coverage command: | codecov