2HoursProject/flic-webhook-webpush
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beter variable names

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cpu
2025-03-28 21:06:41 +01:00
parent 1a241e5355
commit 675c0a2d87
3 changed files with 38 additions and 16 deletions
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31
server.js
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@@ -24,8 +24,9 @@ const allowedOrigins = (process.env.ALLOWED_ORIGINS || "").split(',').map(origin
const allowedMethods = (process.env.ALLOWED_METHODS || "POST,OPTIONS,GET").split(',').map(method => method.trim()).filter(method => method);
const allowedHeaders = (process.env.ALLOWED_HEADERS || "Content-Type,Authorization").split(',').map(header => header.trim()).filter(header => header);
// Retry configuration for DNS resolution issues
const maxRetries = parseInt(process.env.MAX_NOTIFICATION_RETRIES || 3, 10);
const initialRetryDelay = parseInt(process.env.INITIAL_RETRY_DELAY_MS || 1000, 10); // 1 second
const maxRetries = parseInt(process.env.NOTIFICATION_MAX_RETRIES || 3, 10);
const subsequentRetryDelay = parseInt(process.env.NOTIFICATION_SUBSEQUENT_RETRY_DELAY_MS || 1000, 10); // 1 second base delay for subsequent retries
const firstRetryDelay = parseInt(process.env.NOTIFICATION_FIRST_RETRY_DELAY_MS || 10, 10); // 10 milliseconds - minimal delay for first retry
// HTTP request timeout configuration
const httpTimeout = parseInt(process.env.HTTP_TIMEOUT_MS || 10000, 10); // 10 seconds
// Logging level configuration
@@ -98,7 +99,7 @@ dns.setServers(dns.getServers()); // Reset DNS servers (can help in some Docker
// Example: dns.setServers(['8.8.8.8', '1.1.1.1']);
// --- Utility function for retrying web push notifications with exponential backoff ---
async function sendWebPushWithRetry(subscription, payload, retryCount = 0, delay = initialRetryDelay) {
async function sendWebPushWithRetry(subscription, payload, retryCount = 0, delay = subsequentRetryDelay) {
try {
return await webpush.sendNotification(subscription, payload);
} catch (error) {
@@ -108,13 +109,25 @@ async function sendWebPushWithRetry(subscription, payload, retryCount = 0, delay
error.code === 'ETIMEDOUT';
if (isDnsError && retryCount < maxRetries) {
console.log(`DNS resolution failed (${error.code}). Retrying notification in ${delay}ms (attempt ${retryCount + 1}/${maxRetries})...`);
// For first retry (retryCount = 0), use minimal delay or no delay
const actualDelay = retryCount === 0 ? firstRetryDelay : delay;
// Wait for the delay
await new Promise(resolve => setTimeout(resolve, delay));
if (retryCount === 0) {
logger.info(`DNS resolution failed (${error.code}). Retrying notification immediately or with minimal delay of ${firstRetryDelay}ms (attempt ${retryCount + 1}/${maxRetries})...`);
} else {
logger.info(`DNS resolution failed (${error.code}). Retrying notification in ${actualDelay}ms (attempt ${retryCount + 1}/${maxRetries})...`);
}
// Exponential backoff with jitter
const nextDelay = delay * (1.5 + Math.random() * 0.5);
// Wait for the delay (minimal or none for first retry)
if (actualDelay > 0) {
await new Promise(resolve => setTimeout(resolve, actualDelay));
}
// Calculate next delay with exponential backoff + jitter
// First retry uses subsequentRetryDelay, subsequent retries use exponential increase
const nextDelay = retryCount === 0 ?
subsequentRetryDelay :
delay * (1.5 + Math.random() * 0.5);
// Retry recursively with increased count and delay
return sendWebPushWithRetry(subscription, payload, retryCount + 1, nextDelay);
@@ -360,7 +373,7 @@ server.listen(port, () => {
}
logger.info(`Subscription Endpoint Auth: ${basicAuthUsername && basicAuthPassword ? 'Enabled (Basic)' : 'Disabled'}`);
logger.info(`Subscriptions File: ${subscriptionsFilePath}`);
logger.info(`Push Notification Retry Config: ${maxRetries} retries, ${initialRetryDelay}ms initial delay`);
logger.info(`Push Notification Retry Config: ${maxRetries} retries, first retry: ${firstRetryDelay}ms, subsequent retries: ${subsequentRetryDelay}ms base delay`);
logger.info(`DNS Config: IPv4 first, timeout ${dnsTimeout}ms`);
logger.info(`HTTP Timeout: ${httpTimeout}ms`);
logger.info(`Log Level: ${LOG_LEVEL.toUpperCase()}`);