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fix: wrap updateInventory DB writes in a transaction to prevent concurrent lock errors (#109 #110)

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This commit is contained in:
dadaloop82
2026-05-20 15:38:34 +00:00
parent a37d97dfcd
commit 66f5a03503
1 changed files with 36 additions and 27 deletions
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api/index.php
+36 -27
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@@ -2252,37 +2252,46 @@ function updateInventory(PDO $db): void {
$fields[] = "updated_at = CURRENT_TIMESTAMP";
$params[] = $id;
$stmt = $db->prepare("UPDATE inventory SET " . implode(', ', $fields) . " WHERE id = ?");
$stmt->execute($params);
// Wrap all writes in a single transaction to avoid concurrent lock failures.
$db->beginTransaction();
try {
$stmt = $db->prepare("UPDATE inventory SET " . implode(', ', $fields) . " WHERE id = ?");
$stmt->execute($params);
// Record a compensating transaction so anomaly detection stays accurate
if (isset($input['quantity']) && $prevRow) {
$oldQty = (float)$prevRow['quantity'];
$newQty = (float)$input['quantity'];
$diff = round($newQty - $oldQty, 6);
$loc = $input['location'] ?? $prevRow['location'];
$pid = (int)$prevRow['product_id'];
if (abs($diff) > 0.001) {
$txType = $diff > 0 ? 'in' : 'out';
$txQty = abs($diff);
$db->prepare("INSERT INTO transactions (product_id, type, quantity, location, notes) VALUES (?, ?, ?, ?, '[Manual correction]')")
->execute([$pid, $txType, $txQty, $loc]);
// Record a compensating transaction so anomaly detection stays accurate
if (isset($input['quantity']) && $prevRow) {
$oldQty = (float)$prevRow['quantity'];
$newQty = (float)$input['quantity'];
$diff = round($newQty - $oldQty, 6);
$loc = $input['location'] ?? $prevRow['location'];
$pid = (int)$prevRow['product_id'];
if (abs($diff) > 0.001) {
$txType = $diff > 0 ? 'in' : 'out';
$txQty = abs($diff);
$db->prepare("INSERT INTO transactions (product_id, type, quantity, location, notes) VALUES (?, ?, ?, ?, '[Manual correction]')")
->execute([$pid, $txType, $txQty, $loc]);
}
}
// Update unit on the product if provided
if (isset($input['unit']) && isset($input['product_id'])) {
$stmt = $db->prepare("UPDATE products SET unit = ?, updated_at = CURRENT_TIMESTAMP WHERE id = ?");
$stmt->execute([$input['unit'], $input['product_id']]);
}
// Update package info if provided
if (isset($input['package_unit']) && isset($input['product_id'])) {
$stmt = $db->prepare("UPDATE products SET package_unit = ?, default_quantity = ?, updated_at = CURRENT_TIMESTAMP WHERE id = ?");
$stmt->execute([$input['package_unit'], $input['package_size'] ?? 0, $input['product_id']]);
}
$db->commit();
} catch (Throwable $e) {
if ($db->inTransaction()) $db->rollBack();
throw $e;
}
// Update unit on the product if provided
if (isset($input['unit']) && isset($input['product_id'])) {
$stmt = $db->prepare("UPDATE products SET unit = ?, updated_at = CURRENT_TIMESTAMP WHERE id = ?");
$stmt->execute([$input['unit'], $input['product_id']]);
}
// Update package info if provided
if (isset($input['package_unit']) && isset($input['product_id'])) {
$stmt = $db->prepare("UPDATE products SET package_unit = ?, default_quantity = ?, updated_at = CURRENT_TIMESTAMP WHERE id = ?");
$stmt->execute([$input['package_unit'], $input['package_size'] ?? 0, $input['product_id']]);
}
// Real-time Bring! sync: if quantity changed, keep Bring! in sync immediately
// Real-time Bring! sync: done after commit so DB lock is not held during HTTP call
if (isset($input['quantity']) && $prevRow && abs((float)$input['quantity'] - (float)$prevRow['quantity']) > 0.001) {
try { bringQuickSyncProduct($db, (int)$prevRow['product_id']); } catch (Throwable $e) {}
}