08.02 PasswordLockout RQ3

PasswordLockoutRequirement.java

@@ -0,0 +1,66 @@
+import java.util.HashMap;
+import java.util.Map;
+
+public class PasswordLockoutRequirement extends Requirement {
+    private final String user;
+    private final Map<String, UserStatus> users = new HashMap<>();
+
+    private static final long LOCK_TIME = 12 * 1 * 1000; // 12 minutes
+    private static final int MAX_ATTEMPTS = 5;
+
+    public PasswordLockoutRequirement(String user) {
+        this.user = user;
+        users.putIfAbsent(user, new UserStatus());
+    }
+
+    public void recordFailedAttempt() {
+        users.get(user).increaseFailedAttempts();
+    }
+
+    public void resetFailedAttempts() {
+        users.get(user).clearAttempts();
+    }
+
+    @Override
+    public Checkable.CheckStatus check() {
+        UserStatus status = users.get(user);
+        if (status.isLocked()) {
+            if (System.currentTimeMillis() - status.getLockoutStartTime() > LOCK_TIME) {
+                status.clearLock();
+                return Checkable.CheckStatus.PASS;
+            } else {
+                return Checkable.CheckStatus.FAIL;
+            }
+        }
+        return Checkable.CheckStatus.INCOMPLETE;
+    }
+
+    private static class UserStatus {
+        private int failedAttempts = 0;
+        private long lockStart = 0;
+
+        public long getLockoutStartTime() {
+            return lockStart;
+        }
+
+        public void increaseFailedAttempts() {
+            failedAttempts++;
+            if (failedAttempts >= MAX_ATTEMPTS) {
+                lockStart = System.currentTimeMillis();
+            }
+        }
+
+        public void clearAttempts() {
+            failedAttempts = 0;
+            lockStart = 0;
+        }
+
+        public boolean isLocked() {
+            return lockStart > 0;
+        }
+
+        public void clearLock() {
+            lockStart = 0;
+        }
+    }
+}

PasswordMinimumLength.java

@@ -1,5 +1,5 @@
 
-import rqcode.concepts.Requirement;
+
 
 public class PasswordMinimumLength extends Requirement {
     private static final int MIN_LENGTH = 8;

PasswordPolicy.java

@@ -1,6 +1,4 @@
-package rqcode.tutorial.tutorial_new;
-import rqcode.concepts.CombinedRequirements;
-import rqcode.concepts.Requirement;
+
 import java.util.Arrays;
 import java.util.List;