feat(circuit-breaker): extract abort controller renewal logic into se…

…parate function

nodeshift#861

lib/circuit.js

@@ -304,9 +304,7 @@ class CircuitBreaker extends EventEmitter {
     function _halfOpen (circuit) {
       circuit[STATE] = HALF_OPEN;
       circuit[PENDING_CLOSE] = true;
-      if (circuit.options.autoRenewAbortController) {
-        circuit.options.abortController = new AbortController();
-      }
+      circuit._renewAbortControllerIfNeeded();
       /**
        * Emitted after `options.resetTimeout` has elapsed, allowing for
        * a single attempt to call the service again. If that attempt is
@@ -347,6 +345,21 @@ class CircuitBreaker extends EventEmitter {
     }
   }
 
+  /**
+   * Renews the abort controller if needed
+   * @private
+   * @returns {void}
+   */
+  _renewAbortControllerIfNeeded () {
+    if (
+      this.options.autoRenewAbortController &&
+        this.options.abortController &&
+        this.options.abortController.signal.aborted
+    ) {
+      this.options.abortController = new AbortController();
+    }
+  }
+
   /**
    * Closes the breaker, allowing the action to execute again
    * @fires CircuitBreaker#close
@@ -359,13 +372,7 @@ class CircuitBreaker extends EventEmitter {
       }
       this[STATE] = CLOSED;
       this[PENDING_CLOSE] = false;
-      if (
-        this.options.autoRenewAbortController &&
-          this.options.abortController &&
-          this.options.abortController.signal.aborted
-      ) {
-        this.options.abortController = new AbortController();
-      }
+      this._renewAbortControllerIfNeeded();
       /**
        * Emitted when the breaker is reset allowing the action to execute again
        * @event CircuitBreaker#close