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Improving locking process in get

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Shivam Mathur 2025-02-06 02:33:08 +05:30
parent 260b35cca0
commit 89a5bffb0b
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1 changed files with 36 additions and 10 deletions
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46
src/scripts/unix.sh
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@ -77,6 +77,32 @@ read_env() {
export ts
}
# Function to create a lock.
acquire_lock() {
lock_path="$1"
while true; do
if sudo mkdir "$lock_path" 2>/dev/null; then
echo $$ | sudo tee "$lock_path/pid" >/dev/null
return 0
else
if sudo test -f "$lock_path/pid"; then
lock_pid=$(sudo cat "$lock_path/pid")
if ! ps -p "$lock_pid" >/dev/null 2>&1; then
sudo rm -rf "$lock_path"
continue
fi
fi
sleep 1
fi
done
}
# Function to release the lock.
release_lock() {
lock_path="$1"
sudo rm -rf "$lock_path"
}
# Function to download a file using cURL.
# mode: -s pipe to stdout, -v save file and return status code
# execute: -e save file as executable
@ -89,23 +115,23 @@ get() {
if [ "$mode" = "-s" ]; then
sudo curl "${curl_opts[@]}" "${links[0]}"
else
lock_path="$file_path.lock"
until sudo mkdir "$lock_path" 2>/dev/null; do
sleep 1
done
if [ "$execute" = "-e" ]; then
until [ -z "$(fuser "$file_path" 2>/dev/null)" ]; do
sleep 1
done
if [ "$runner" = "self-hosted" ]; then
lock_path="$file_path.lock"
acquire_lock "$lock_path"
if [ "$execute" = "-e" ]; then
until [ -z "$(fuser "$file_path" 2>/dev/null)" ]; do
sleep 1
done
fi
trap 'release_lock "$lock_path"' EXIT SIGINT SIGTERM
fi
trap 'sudo rm -rf "$lock_path"' EXIT SIGINT SIGTERM
for link in "${links[@]}"; do
status_code=$(sudo curl -w "%{http_code}" -o "$file_path" "${curl_opts[@]}" "$link")
[ "$status_code" = "200" ] && break
done
[ "$execute" = "-e" ] && sudo chmod a+x "$file_path"
[ "$mode" = "-v" ] && echo "$status_code"
sudo rm -rf "$lock_path" >/dev/null 2>&1 || true
[ "$runner" = "self-hosted" ] && release_lock "$lock_path"
fi
}