spring SummaryProgressReporter 源码
springboot SummaryProgressReporter 代码
文件路径：/spring-boot-project/spring-boot-cli/src/main/java/org/springframework/boot/cli/compiler/grape/SummaryProgressReporter.java
/*
* Copyright 2012-2019 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 org.springframework.boot.cli.compiler.grape;
import java.io.PrintStream;
import java.util.concurrent.TimeUnit;
import org.eclipse.aether.AbstractRepositoryListener;
import org.eclipse.aether.DefaultRepositorySystemSession;
import org.eclipse.aether.RepositoryEvent;
import org.eclipse.aether.transfer.AbstractTransferListener;
import org.eclipse.aether.transfer.TransferEvent;
/**
* Provide high-level progress feedback for long running resolves.
*
* @author Phillip Webb
* @author Andy Wilkinson
*/
final class SummaryProgressReporter implements ProgressReporter {
private static final long INITIAL_DELAY = TimeUnit.SECONDS.toMillis(3);
private static final long PROGRESS_DELAY = TimeUnit.SECONDS.toMillis(1);
private final long startTime = System.currentTimeMillis();
private final PrintStream out;
private long lastProgressTime = System.currentTimeMillis();
private boolean started;
private boolean finished;
SummaryProgressReporter(DefaultRepositorySystemSession session, PrintStream out) {
this.out = out;
session.setTransferListener(new AbstractTransferListener() {
@Override
public void transferStarted(TransferEvent event) {
reportProgress();
}
@Override
public void transferProgressed(TransferEvent event) {
reportProgress();
}
});
session.setRepositoryListener(new AbstractRepositoryListener() {
@Override
public void artifactResolved(RepositoryEvent event) {
reportProgress();
}
});
}
private void reportProgress() {
if (!this.finished && System.currentTimeMillis() - this.startTime > INITIAL_DELAY) {
if (!this.started) {
this.started = true;
this.out.print("Resolving dependencies..");
this.lastProgressTime = System.currentTimeMillis();
}
else if (System.currentTimeMillis() - this.lastProgressTime > PROGRESS_DELAY) {
this.out.print(".");
this.lastProgressTime = System.currentTimeMillis();
}
}
}
@Override
public void finished() {
if (this.started && !this.finished) {
this.finished = true;
this.out.println();
}
}
}
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- 本文标签： Java Spring Spring Boot
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