Projektstart

backend/node_modules/bullmq/dist/cjs/classes/backoffs.js

@@ -0,0 +1,61 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Backoffs = void 0;
+class Backoffs {
+    static normalize(backoff) {
+        if (Number.isFinite(backoff)) {
+            return {
+                type: 'fixed',
+                delay: backoff,
+            };
+        }
+        else if (backoff) {
+            return backoff;
+        }
+    }
+    static calculate(backoff, attemptsMade, err, job, customStrategy) {
+        if (backoff) {
+            const strategy = lookupStrategy(backoff, customStrategy);
+            return strategy(attemptsMade, backoff.type, err, job);
+        }
+    }
+}
+exports.Backoffs = Backoffs;
+Backoffs.builtinStrategies = {
+    fixed: function (delay, jitter = 0) {
+        return function () {
+            if (jitter > 0) {
+                const minDelay = delay * (1 - jitter);
+                return Math.floor(Math.random() * delay * jitter + minDelay);
+            }
+            else {
+                return delay;
+            }
+        };
+    },
+    exponential: function (delay, jitter = 0) {
+        return function (attemptsMade) {
+            if (jitter > 0) {
+                const maxDelay = Math.round(Math.pow(2, attemptsMade - 1) * delay);
+                const minDelay = maxDelay * (1 - jitter);
+                return Math.floor(Math.random() * maxDelay * jitter + minDelay);
+            }
+            else {
+                return Math.round(Math.pow(2, attemptsMade - 1) * delay);
+            }
+        };
+    },
+};
+function lookupStrategy(backoff, customStrategy) {
+    if (backoff.type in Backoffs.builtinStrategies) {
+        return Backoffs.builtinStrategies[backoff.type](backoff.delay, backoff.jitter);
+    }
+    else if (customStrategy) {
+        return customStrategy;
+    }
+    else {
+        throw new Error(`Unknown backoff strategy ${backoff.type}.
+      If a custom backoff strategy is used, specify it when the queue is created.`);
+    }
+}
+//# sourceMappingURL=backoffs.js.map