com.github.nosan.embedded.cassandra.OutputCollector Maven / Gradle / Ivy
/*
* Copyright 2020-2021 the original author or authors.
*
* 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
*
* https://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.github.nosan.embedded.cassandra;
import java.io.Closeable;
import java.util.Deque;
import java.util.concurrent.ConcurrentLinkedDeque;
import java.util.function.Consumer;
class OutputCollector implements Consumer, Closeable {
private final Deque output = new ConcurrentLinkedDeque<>();
private final CassandraDatabase database;
OutputCollector(CassandraDatabase database) {
this.database = database;
database.getStdOut().attach(this);
}
@Override
public void accept(String line) {
while (this.output.size() >= 30) {
this.output.removeFirst();
}
this.output.addLast(line);
}
@Override
public void close() {
this.database.getStdOut().detach(this);
}
Deque getOutput() {
return this.output;
}
}