/*
* Copyright 2016-present Facebook, Inc.
*
* 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.facebook.buck.util.network;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.LinkedListMultimap;
import com.google.common.collect.Multimap;
import com.google.common.util.concurrent.Futures;
import com.google.common.util.concurrent.ListenableFuture;
import java.io.IOException;
import java.util.Collection;
import javax.annotation.concurrent.GuardedBy;
/** Fake implementation of {@link ScribeLogger} which records logged lines to memory. */
public final class FakeScribeLogger extends ScribeLogger {
// Keep the lines in the order in which they were written.
@GuardedBy("this")
private final Multimap<String, String> loggedCategoryLines = LinkedListMultimap.create();
@Override
public ListenableFuture<Void> log(String category, Iterable<String> lines) {
synchronized (this) {
loggedCategoryLines.putAll(category, lines);
return Futures.immediateFuture(null);
}
}
public ImmutableList<String> getLinesForCategory(String category) {
synchronized (this) {
// This is guaranteed to be non-null even if no lines were logged to category.
Collection<String> lines = loggedCategoryLines.get(category);
// Make a defensive copy to ensure new lines aren't logged to the category after we return.
return ImmutableList.copyOf(lines);
}
}
@Override
public void close() throws IOException {}
}