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use locking by mkdir

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Aki Kareha 2025-02-22 13:01:06 +09:00
parent c1ee761a65
commit 56f1986cab
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1 changed files with 11 additions and 0 deletions
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@ -4,6 +4,8 @@
CSV_URL="https://www8.cao.go.jp/chosei/shukujitsu/syukujitsu.csv" CSV_URL="https://www8.cao.go.jp/chosei/shukujitsu/syukujitsu.csv"
# Internal configuration settings # Internal configuration settings
LOCK_DIR="lock"
TMP_CSV_FILE="holidays-jp-tmp.csv" TMP_CSV_FILE="holidays-jp-tmp.csv"
RAW_CSV_FILE="holidays-jp-raw.csv" RAW_CSV_FILE="holidays-jp-raw.csv"
CSV_FILE="holidays-jp.csv" CSV_FILE="holidays-jp.csv"
@ -21,6 +23,12 @@ if ! command -v nkf >/dev/null; then
exit $EXIT_FAILURE exit $EXIT_FAILURE
fi fi
# Acquire the lock or exit
if ! mkdir "$LOCK_DIR" 2>/dev/null; then
echo "Another process is holding the lock. Exiting."
exit $EXIT_FAILURE
fi
# Run # Run
curl -sS -L -o $TMP_CSV_FILE $CSV_URL curl -sS -L -o $TMP_CSV_FILE $CSV_URL
if ! diff -q $RAW_CSV_FILE $TMP_CSV_FILE >/dev/null 2>&1; then if ! diff -q $RAW_CSV_FILE $TMP_CSV_FILE >/dev/null 2>&1; then
@ -30,5 +38,8 @@ else
rm $TMP_CSV_FILE rm $TMP_CSV_FILE
fi fi
# Release the lock
rmdir "$LOCK_DIR"
# Exit # Exit
exit $EXIT_SUCCESS exit $EXIT_SUCCESS