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44 lines
1.5 KiB
44 lines
1.5 KiB
#!/bin/bash
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## When writing relation script, remember:
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## - they should be idempotents
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## - they can be launched while the dockers is already up
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## - they are launched from the host
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## - the target of the link is launched first, and get a chance to ``relation-set``
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## - both side of the scripts get to use ``relation-get``.
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. lib/common
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set -e
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## XXXvlab: should use container name here so that it could support
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## multiple mysql
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label=${SERVICE_NAME}-mysql-backup
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DST=$CONFIGSTORE/$TARGET_SERVICE_NAME/etc/cron/$label
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schedule=$(relation-get schedule)
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if ! echo "$schedule" | egrep '^\s*(([0-9/,*-]+\s+){4,4}[0-9/,*-]+|@[a-z]+)\s*$' >/dev/null 2>&1; then
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err "Unrecognized schedule '$schedule'."
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exit 1
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fi
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## Warning: using '\' in heredoc will be removed in the final cron file, which
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## is totally wanted: cron does not support multilines.
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## Warning: 'docker -v' will use HOST directory even if launched from
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## 'cron' container.
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file_put "$DST" <<EOF
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COMPOSE_LAUNCHER_OPTS=$COMPOSE_LAUNCHER_OPTS
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$schedule root lock $label -D -p 10 -c "\
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docker run --rm \
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-e MYSQLHOST="${SERVICE_NAME}" \
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--network ${PROJECT_NAME}_default \
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-v \"$LOCAL_DB_PASSFILE\":/root/.my.cnf \
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-v \"$HOST_CHARM_STORE/${CHARM_REL_PATH#${CHARM_STORE}/}/resources/bin/mysql-backup:/usr/sbin/mysql-backup\" \
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-v \"$SERVICE_DATASTORE/var/backups/mysql:/var/backups/mysql\" \
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--entrypoint mysql-backup \
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\"$DOCKER_BASE_IMAGE\"" 2>&1 | ts '\%F \%T \%Z' >> /var/log/cron/${label}_script.log
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EOF
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chmod +x "$DST"
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