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node_modules/generic-pool/lib/Queue.js

@@ -0,0 +1,35 @@
+"use strict";
+
+const DoublyLinkedList = require("./DoublyLinkedList");
+const Deque = require("./Deque");
+
+/**
+ * Sort of a internal queue for holding the waiting
+ * resource requets for a given "priority".
+ * Also handles managing timeouts rejections on items (is this the best place for this?)
+ * This is the last point where we know which queue a resourceRequest is in
+ *
+ */
+class Queue extends Deque {
+  /**
+   * Adds the obj to the end of the list for this slot
+   * we completely override the parent method because we need access to the
+   * node for our rejection handler
+   * @param {any} resourceRequest [description]
+   */
+  push(resourceRequest) {
+    const node = DoublyLinkedList.createNode(resourceRequest);
+    resourceRequest.promise.catch(this._createTimeoutRejectionHandler(node));
+    this._list.insertEnd(node);
+  }
+
+  _createTimeoutRejectionHandler(node) {
+    return reason => {
+      if (reason.name === "TimeoutError") {
+        this._list.remove(node);
+      }
+    };
+  }
+}
+
+module.exports = Queue;