org.apache.bookkeeper.server.http.service.BookieSanityService Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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
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* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.bookkeeper.server.http.service;
import static com.google.common.base.Preconditions.checkNotNull;
import java.util.concurrent.Semaphore;
import java.util.concurrent.TimeUnit;
import lombok.Data;
import lombok.NoArgsConstructor;
import org.apache.bookkeeper.common.util.JsonUtil;
import org.apache.bookkeeper.conf.ServerConfiguration;
import org.apache.bookkeeper.http.HttpServer;
import org.apache.bookkeeper.http.service.HttpEndpointService;
import org.apache.bookkeeper.http.service.HttpServiceRequest;
import org.apache.bookkeeper.http.service.HttpServiceResponse;
import org.apache.bookkeeper.tools.cli.commands.bookie.SanityTestCommand;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* HttpEndpointService that exposes the bookie sanity state.
*
*
* Get the current bookie sanity response:
*
*
*
* {
* "passed" : true,
* "readOnly" : false
*}
*
*
*/
public class BookieSanityService implements HttpEndpointService {
static final Logger LOG = LoggerFactory.getLogger(BookieSanityService.class);
private final ServerConfiguration config;
private Semaphore lock = new Semaphore(1);
private static final int TIMEOUT_MS = 5000;
private static final int MAX_CONCURRENT_REQUESTS = 1;
public BookieSanityService(ServerConfiguration config) {
this.config = checkNotNull(config);
}
/**
* POJO definition for the bookie sanity response.
*/
@Data
@NoArgsConstructor
public static class BookieSanity {
private boolean passed;
private boolean readOnly;
}
@Override
public HttpServiceResponse handle(HttpServiceRequest request) throws Exception {
HttpServiceResponse response = new HttpServiceResponse();
if (HttpServer.Method.GET != request.getMethod()) {
response.setCode(HttpServer.StatusCode.NOT_FOUND);
response.setBody("Only support GET method to retrieve bookie sanity state.");
return response;
}
BookieSanity bs = new BookieSanity();
if (config.isForceReadOnlyBookie()) {
bs.readOnly = true;
} else {
try {
// allow max concurrent request as sanity-test check relatively
// longer time to complete
try {
lock.tryAcquire(MAX_CONCURRENT_REQUESTS, TIMEOUT_MS, TimeUnit.MILLISECONDS);
} catch (InterruptedException e) {
LOG.error("Timing out due to max {} of sanity request are running concurrently",
MAX_CONCURRENT_REQUESTS);
response.setCode(HttpServer.StatusCode.INTERNAL_ERROR);
response.setBody("Timing out due to max number of sanity request are running concurrently");
return response;
}
SanityTestCommand sanity = new SanityTestCommand();
bs.passed = sanity.apply(config, new SanityTestCommand.SanityFlags());
} finally {
lock.release();
}
}
String jsonResponse = JsonUtil.toJson(bs);
response.setBody(jsonResponse);
response.setCode(HttpServer.StatusCode.OK);
return response;
}
}