Added Design Authentication Manager.java

varunu28 · web-flow · commit e656aca54698 · 2021-03-22T18:19:36.000-07:00
diff --git a/Medium/Design Authentication Manager.java b/Medium/Design Authentication Manager.java
@@ -0,0 +1,33 @@
+class AuthenticationManager {
+
+  Map<String, Integer> map;
+  int timeToLive;
+
+  public AuthenticationManager(int timeToLive) {
+    map = new HashMap<>();
+    this.timeToLive = timeToLive;
+  }
+
+  public void generate(String tokenId, int currentTime) {
+    map.put(tokenId, currentTime);
+  }
+
+  public void renew(String tokenId, int currentTime) {
+    if (map.containsKey(tokenId) && map.get(tokenId) + timeToLive > currentTime) {
+      map.put(tokenId, currentTime);
+    }
+  }
+
+  public int countUnexpiredTokens(int currentTime) {
+    return (int) map.entrySet().stream()
+        .filter(entry -> entry.getValue() + timeToLive > currentTime).count();
+  }
+}
+
+/**
+ * Your AuthenticationManager object will be instantiated and called as such:
+ * AuthenticationManager obj = new AuthenticationManager(timeToLive);
+ * obj.generate(tokenId,currentTime);
+ * obj.renew(tokenId,currentTime);
+ * int param_3 = obj.countUnexpiredTokens(currentTime);
+ */
