1 files changed, 0 insertions, 148 deletions
diff --git a/gerrit-gwtexpui/src/main/java/com/google/gwtexpui/server/CacheHeaders.java b/gerrit-gwtexpui/src/main/java/com/google/gwtexpui/server/CacheHeaders.java
deleted file mode 100644
index 0e5e425cfd..0000000000
--- a/gerrit-gwtexpui/src/main/java/com/google/gwtexpui/server/CacheHeaders.java
+++ /dev/null
@@ -1,148 +0,0 @@
-// Copyright (C) 2013 The Android Open Source Project
-//
-// Licensed 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 com.google.gwtexpui.server;
-
-import static java.util.concurrent.TimeUnit.DAYS;
-import static java.util.concurrent.TimeUnit.SECONDS;
-
-import java.util.concurrent.TimeUnit;
-import javax.servlet.http.HttpServletRequest;
-import javax.servlet.http.HttpServletResponse;
-
-/** Utilities to manage HTTP caching directives in responses. */
-public class CacheHeaders {
-  private static final long MAX_CACHE_DURATION = DAYS.toSeconds(365);
-
-  /**
-   * Do not cache the response, anywhere.
-   *
-   * @param res response being returned.
-   */
-  public static void setNotCacheable(HttpServletResponse res) {
-    String cc = "no-cache, no-store, max-age=0, must-revalidate";
-    res.setHeader("Cache-Control", cc);
-    res.setHeader("Pragma", "no-cache");
-    res.setHeader("Expires", "Mon, 01 Jan 1990 00:00:00 GMT");
-    res.setDateHeader("Date", System.currentTimeMillis());
-  }
-
-  /**
-   * Permit caching the response for up to the age specified.
-   *
-   * <p>If the request is on a secure connection (e.g. SSL) private caching is used. This allows the
-   * user-agent to cache the response, but requests intermediate proxies to not cache. This may
-   * offer better protection for Set-Cookie headers.
-   *
-   * <p>If the request is on plaintext (insecure), public caching is used. This may allow an
-   * intermediate proxy to cache the response, including any Set-Cookie header that may have also
-   * been included.
-   *
-   * @param req current request.
-   * @param res response being returned.
-   * @param age how long the response can be cached.
-   * @param unit time unit for age, usually {@link TimeUnit#SECONDS}.
-   */
-  public static void setCacheable(
-      HttpServletRequest req, HttpServletResponse res, long age, TimeUnit unit) {
-    setCacheable(req, res, age, unit, false);
-  }
-
-  /**
-   * Permit caching the response for up to the age specified.
-   *
-   * <p>If the request is on a secure connection (e.g. SSL) private caching is used. This allows the
-   * user-agent to cache the response, but requests intermediate proxies to not cache. This may
-   * offer better protection for Set-Cookie headers.
-   *
-   * <p>If the request is on plaintext (insecure), public caching is used. This may allow an
-   * intermediate proxy to cache the response, including any Set-Cookie header that may have also
-   * been included.
-   *
-   * @param req current request.
-   * @param res response being returned.
-   * @param age how long the response can be cached.
-   * @param unit time unit for age, usually {@link TimeUnit#SECONDS}.
-   * @param mustRevalidate true if the client must validate the cached entity.
-   */
-  public static void setCacheable(
-      HttpServletRequest req,
-      HttpServletResponse res,
-      long age,
-      TimeUnit unit,
-      boolean mustRevalidate) {
-    if (req.isSecure()) {
-      setCacheablePrivate(res, age, unit, mustRevalidate);
-    } else {
-      setCacheablePublic(res, age, unit, mustRevalidate);
-    }
-  }
-
-  /**
-   * Allow the response to be cached by proxies and user-agents.
-   *
-   * <p>If the response includes a Set-Cookie header the cookie may be cached by a proxy and
-   * returned to multiple browsers behind the same proxy. This is insecure for authenticated
-   * connections.
-   *
-   * @param res response being returned.
-   * @param age how long the response can be cached.
-   * @param unit time unit for age, usually {@link TimeUnit#SECONDS}.
-   * @param mustRevalidate true if the client must validate the cached entity.
-   */
-  public static void setCacheablePublic(
-      HttpServletResponse res, long age, TimeUnit unit, boolean mustRevalidate) {
-    long now = System.currentTimeMillis();
-    long sec = maxAgeSeconds(age, unit);
-
-    res.setDateHeader("Expires", now + SECONDS.toMillis(sec));
-    res.setDateHeader("Date", now);
-    cache(res, "public", age, unit, mustRevalidate);
-  }
-
-  /**
-   * Allow the response to be cached only by the user-agent.
-   *
-   * @param res response being returned.
-   * @param age how long the response can be cached.
-   * @param unit time unit for age, usually {@link TimeUnit#SECONDS}.
-   * @param mustRevalidate true if the client must validate the cached entity.
-   */
-  public static void setCacheablePrivate(
-      HttpServletResponse res, long age, TimeUnit unit, boolean mustRevalidate) {
-    long now = System.currentTimeMillis();
-    res.setDateHeader("Expires", now);
-    res.setDateHeader("Date", now);
-    cache(res, "private", age, unit, mustRevalidate);
-  }
-
-  public static boolean hasCacheHeader(HttpServletResponse res) {
-    return res.containsHeader("Cache-Control") || res.containsHeader("Expires");
-  }
-
-  private static void cache(
-      HttpServletResponse res, String type, long age, TimeUnit unit, boolean revalidate) {
-    res.setHeader(
-        "Cache-Control",
-        String.format(
-            "%s, max-age=%d%s",
-            type, maxAgeSeconds(age, unit), revalidate ? ", must-revalidate" : ""));
-  }
-
-  private static long maxAgeSeconds(long age, TimeUnit unit) {
-    return Math.min(unit.toSeconds(age), MAX_CACHE_DURATION);
-  }
-
-  private CacheHeaders() {}
-}