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// Copyright (C) 2012 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.gerrit.server.util;
import com.google.gerrit.common.Nullable;
import com.google.gerrit.server.RemotePeer;
import com.google.gerrit.server.config.CanonicalWebUrl;
import com.google.inject.Inject;
import com.google.inject.Key;
import com.google.inject.Provider;
import com.google.inject.servlet.ServletScopes;
import com.google.inject.util.Providers;
import com.google.inject.util.Types;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.net.SocketAddress;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.Callable;
/** Propagator for Guice's built-in servlet scope. */
public class GuiceRequestScopePropagator extends RequestScopePropagator {
private final String url;
private final SocketAddress peer;
@Inject
GuiceRequestScopePropagator(
@CanonicalWebUrl @Nullable Provider<String> urlProvider,
@RemotePeer Provider<SocketAddress> remotePeerProvider,
ThreadLocalRequestContext local) {
super(ServletScopes.REQUEST, local);
this.url = urlProvider != null ? urlProvider.get() : null;
this.peer = remotePeerProvider.get();
}
/** @see RequestScopePropagator#wrap(Callable) */
// ServletScopes#continueRequest is deprecated, but it's not obvious their
// recommended replacement is an appropriate drop-in solution; see
// https://gerrit-review.googlesource.com/83971
@SuppressWarnings("deprecation")
@Override
protected <T> Callable<T> wrapImpl(Callable<T> callable) {
Map<Key<?>, Object> seedMap = new HashMap<>();
// Request scopes appear to use specific keys in their map, instead of only
// providers. Add bindings for both the key to the instance directly and the
// provider to the instance to be safe.
seedMap.put(Key.get(typeOfProvider(String.class), CanonicalWebUrl.class), Providers.of(url));
seedMap.put(Key.get(String.class, CanonicalWebUrl.class), url);
seedMap.put(Key.get(typeOfProvider(SocketAddress.class), RemotePeer.class), Providers.of(peer));
seedMap.put(Key.get(SocketAddress.class, RemotePeer.class), peer);
return ServletScopes.continueRequest(callable, seedMap);
}
private ParameterizedType typeOfProvider(Type type) {
return Types.newParameterizedType(Provider.class, type);
}
}
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