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32 lines
1.1 KiB
32 lines
1.1 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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set -e
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label=launch-$SERVICE_NAME
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DST=$CONFIGSTORE/$TARGET_SERVICE_NAME/etc/cron/$label
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schedule=$(relation-get schedule) || true
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## It should really stay at midnight as most logs are dated
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schedule=${schedule:-0 0 * * *}
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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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$schedule root lock $label -D -p 10 -c "\
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dc run --rm $SERVICE_NAME" 2>&1 | ts '\%F \%T \%Z' >> /var/log/cron/${label}_script.log
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EOF
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chmod +x "$DST"
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