org.apache.flink.runtime.rest.handler.job.rescaling.RescalingHandlers Maven / Gradle / Ivy
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* to you under the Apache License, Version 2.0 (the
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* http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.flink.runtime.rest.handler.job.rescaling;
import org.apache.flink.api.common.time.Time;
import org.apache.flink.runtime.messages.Acknowledge;
import org.apache.flink.runtime.rest.handler.HandlerRequest;
import org.apache.flink.runtime.rest.handler.RestHandlerException;
import org.apache.flink.runtime.rest.handler.async.AbstractAsynchronousOperationHandlers;
import org.apache.flink.runtime.rest.handler.async.AsynchronousOperationInfo;
import org.apache.flink.runtime.rest.handler.async.AsynchronousOperationResult;
import org.apache.flink.runtime.rest.handler.async.TriggerResponse;
import org.apache.flink.runtime.rest.handler.job.AsynchronousJobOperationKey;
import org.apache.flink.runtime.rest.messages.EmptyRequestBody;
import org.apache.flink.runtime.webmonitor.RestfulGateway;
import org.apache.flink.runtime.webmonitor.retriever.GatewayRetriever;
import org.apache.flink.shaded.netty4.io.netty.handler.codec.http.HttpResponseStatus;
import javax.annotation.Nonnull;
import java.time.Duration;
import java.util.Map;
import java.util.concurrent.CompletableFuture;
/** Rest handler to trigger and poll the rescaling of a running job. */
public class RescalingHandlers
extends AbstractAsynchronousOperationHandlers {
public RescalingHandlers(Duration cacheDuration) {
super(cacheDuration);
}
private static RestHandlerException featureDisabledException() {
return new RestHandlerException(
"Rescaling is temporarily disabled. See FLINK-12312.",
HttpResponseStatus.SERVICE_UNAVAILABLE);
}
/** Handler which triggers the rescaling of the specified job. */
public class RescalingTriggerHandler
extends TriggerHandler<
RestfulGateway, EmptyRequestBody, RescalingTriggerMessageParameters> {
public RescalingTriggerHandler(
GatewayRetriever leaderRetriever,
Time timeout,
Map responseHeaders) {
super(leaderRetriever, timeout, responseHeaders, RescalingTriggerHeaders.getInstance());
}
@Override
public CompletableFuture handleRequest(
@Nonnull final HandlerRequest request,
@Nonnull final RestfulGateway gateway)
throws RestHandlerException {
throw featureDisabledException();
}
@Override
protected CompletableFuture triggerOperation(
HandlerRequest request, RestfulGateway gateway) {
throw new UnsupportedOperationException();
}
@Override
protected AsynchronousJobOperationKey createOperationKey(
HandlerRequest request) {
throw new UnsupportedOperationException();
}
}
/** Handler which reports the status of the rescaling operation. */
public class RescalingStatusHandler
extends StatusHandler<
RestfulGateway, AsynchronousOperationInfo, RescalingStatusMessageParameters> {
public RescalingStatusHandler(
GatewayRetriever leaderRetriever,
Time timeout,
Map responseHeaders) {
super(leaderRetriever, timeout, responseHeaders, RescalingStatusHeaders.getInstance());
}
@Override
public CompletableFuture>
handleRequest(
@Nonnull final HandlerRequest request,
@Nonnull final RestfulGateway gateway)
throws RestHandlerException {
throw featureDisabledException();
}
@Override
protected AsynchronousJobOperationKey getOperationKey(
HandlerRequest request) {
throw new UnsupportedOperationException();
}
@Override
protected AsynchronousOperationInfo exceptionalOperationResultResponse(
Throwable throwable) {
throw new UnsupportedOperationException();
}
@Override
protected AsynchronousOperationInfo operationResultResponse(Acknowledge operationResult) {
throw new UnsupportedOperationException();
}
}
}