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Ensure init is idempotent and doesn't overwrite repo list. #524

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merged 1 commit into from
Jan 24, 2024
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Ensure init is idempotent and doesn't overwrite repo list. #524

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8 changes: 8 additions & 0 deletions infra/images/init_collect_signals/init.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -32,6 +32,14 @@ echo "bucket url = $BUCKET_URL"
echo "bucket prefix file = $BUCKET_PREFIX_FILE"
echo "url data file = $OUTPUT_FILE"

# Exit early if $OUTPUT_FILE already exists. This ensures $OUTPUT_FILE remains
# stable across any restart. Since the file is created atomically we can be
# confident that the file won't be corrupt or truncated.
if [ -f "$OUTPUT_FILE" ]; then
echo "Exiting early. $OUTPUT_FILE already exists."
exit 0
fi

LATEST_PREFIX=`gsutil cat "$BUCKET_URL"/"$BUCKET_PREFIX_FILE"`
echo "latest prefix = $LATEST_PREFIX"

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