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java/org/apache/tomcat/util/http/ServerCookies.java

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+/*
+ *  Licensed to the Apache Software Foundation (ASF) under one or more
+ *  contributor license agreements.  See the NOTICE file distributed with
+ *  this work for additional information regarding copyright ownership.
+ *  The ASF licenses this file to You under the Apache License, Version 2.0
+ *  (the "License"); you may not use this file except in compliance with
+ *  the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+package org.apache.tomcat.util.http;
+
+import org.apache.tomcat.util.res.StringManager;
+
+/**
+ * This class is not thread-safe.
+ */
+public class ServerCookies {
+
+    private static final StringManager sm = StringManager.getManager(ServerCookies.class);
+
+    private ServerCookie[] serverCookies;
+
+    private int cookieCount = 0;
+    private int limit = 200;
+
+
+    public ServerCookies(int initialSize) {
+        serverCookies = new ServerCookie[initialSize];
+    }
+
+
+    /**
+     * Register a new, initialized cookie. Cookies are recycled, and most of the
+     * time an existing ServerCookie object is returned. The caller can set the
+     * name/value and attributes for the cookie.
+     * @return the new cookie
+     */
+    public ServerCookie addCookie() {
+        if (limit > -1 && cookieCount >= limit) {
+            throw new IllegalArgumentException(
+                    sm.getString("cookies.maxCountFail", Integer.valueOf(limit)));
+        }
+
+        if (cookieCount >= serverCookies.length) {
+            int newSize = limit > -1 ? Math.min(2*cookieCount, limit) : 2*cookieCount;
+            ServerCookie scookiesTmp[] = new ServerCookie[newSize];
+            System.arraycopy(serverCookies, 0, scookiesTmp, 0, cookieCount);
+            serverCookies = scookiesTmp;
+        }
+
+        ServerCookie c = serverCookies[cookieCount];
+        if (c == null) {
+            c = new ServerCookie();
+            serverCookies[cookieCount] = c;
+        }
+        cookieCount++;
+        return c;
+    }
+
+
+    public ServerCookie getCookie(int idx) {
+        return serverCookies[idx];
+    }
+
+
+    public int getCookieCount() {
+        return cookieCount;
+    }
+
+
+    public void setLimit(int limit) {
+        this.limit = limit;
+        if (limit > -1 && serverCookies.length > limit && cookieCount <= limit) {
+            // shrink cookie list array
+            ServerCookie scookiesTmp[] = new ServerCookie[limit];
+            System.arraycopy(serverCookies, 0, scookiesTmp, 0, cookieCount);
+            serverCookies = scookiesTmp;
+        }
+    }
+
+
+    public void recycle() {
+        for (int i = 0; i < cookieCount; i++) {
+            serverCookies[i].recycle();
+        }
+        cookieCount = 0;
+    }
+}