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Add Http-service to check bookie sanity state #3630
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100 changes: 100 additions & 0 deletions
100
...r-server/src/main/java/org/apache/bookkeeper/server/http/service/BookieSanityService.java
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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 | ||
* "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.apache.bookkeeper.server.http.service; | ||
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import static com.google.common.base.Preconditions.checkNotNull; | ||
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import java.util.concurrent.Semaphore; | ||
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import org.apache.bookkeeper.bookie.StateManager; | ||
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; | ||
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import lombok.Data; | ||
import lombok.NoArgsConstructor; | ||
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/** | ||
* HttpEndpointService that exposes the bookie sanity state. | ||
* | ||
* <p>Get the current bookie sanity response: | ||
* | ||
* <pre> | ||
* <code> | ||
* { | ||
* "passed" : true, | ||
* "readOnly" : false | ||
*} | ||
* </code> | ||
* </pre> | ||
*/ | ||
public class BookieSanityService implements HttpEndpointService { | ||
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private final ServerConfiguration config; | ||
private Semaphore lock = new Semaphore(1); | ||
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public BookieSanityService(ServerConfiguration config) { | ||
this.config = checkNotNull(config); | ||
} | ||
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/** | ||
* POJO definition for the bookie sanity response. | ||
*/ | ||
@Data | ||
@NoArgsConstructor | ||
public static class BookieSanity { | ||
private boolean passed; | ||
private boolean readOnly; | ||
} | ||
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@Override | ||
public HttpServiceResponse handle(HttpServiceRequest request) throws Exception { | ||
HttpServiceResponse response = new HttpServiceResponse(); | ||
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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; | ||
} | ||
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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 | ||
lock.acquire(); | ||
SanityTestCommand sanity = new SanityTestCommand(); | ||
bs.passed = sanity.apply(config, new SanityTestCommand.SanityFlags()); | ||
} finally { | ||
lock.release(); | ||
} | ||
} | ||
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String jsonResponse = JsonUtil.toJson(bs); | ||
response.setBody(jsonResponse); | ||
response.setCode(HttpServer.StatusCode.OK); | ||
return response; | ||
} | ||
} |
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Please wait at most for X seconds (5?) and if the semaphore cannot be acquired fail the request. We don't want many requests piling up.
Please also fix formatting
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done