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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.config.server.http;
import com.yahoo.config.provision.ApplicationLockException;
import com.yahoo.config.provision.CertificateNotReadyException;
import com.yahoo.config.provision.NodeAllocationException;
import com.yahoo.config.provision.ParentHostUnavailableException;
import com.yahoo.config.provision.exception.ActivationConflictException;
import com.yahoo.config.provision.exception.LoadBalancerServiceException;
import com.yahoo.container.jdisc.HttpRequest;
import com.yahoo.container.jdisc.HttpResponse;
import com.yahoo.vespa.config.server.application.ConfigNotConvergedException;
import com.yahoo.container.jdisc.ThreadedHttpRequestHandler;
import com.yahoo.yolean.Exceptions;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.time.Duration;
import java.util.logging.Level;
/**
* Super class for http handlers, that takes care of checking valid
* methods for a request. Handlers should subclass this method and
* implement the handleMETHOD methods that it supports.
*
* @author hmusum
*/
public class HttpHandler extends ThreadedHttpRequestHandler {
public HttpHandler(HttpHandler.Context ctx) {
super(ctx);
}
@Override
public HttpResponse handle(HttpRequest request) {
log.log(Level.FINE, () -> request.getMethod() + " " + request.getUri().toString());
try {
return switch (request.getMethod()) {
case POST -> handlePOST(request);
case GET -> handleGET(request);
case PUT -> handlePUT(request);
case DELETE -> handleDELETE(request);
default -> createErrorResponse(request.getMethod());
};
} catch (NotFoundException | com.yahoo.vespa.config.server.NotFoundException e) {
return HttpErrorResponse.notFoundError(getMessage(e, request));
} catch (ActivationConflictException e) {
return HttpErrorResponse.conflictWhenActivating(getMessage(e, request));
} catch (InvalidApplicationException e) {
return HttpErrorResponse.invalidApplicationPackage(getMessage(e, request));
} catch (IllegalArgumentException | UnsupportedOperationException e) {
return HttpErrorResponse.badRequest(getMessage(e, request));
} catch (NodeAllocationException e) {
return HttpErrorResponse.nodeAllocationFailure(getMessage(e, request));
} catch (InternalServerException e) {
return HttpErrorResponse.internalServerError(getMessage(e, request));
} catch (UnknownVespaVersionException e) {
return HttpErrorResponse.unknownVespaVersion(getMessage(e, request));
} catch (RequestTimeoutException e) {
return HttpErrorResponse.requestTimeout(getMessage(e, request));
} catch (ApplicationLockException e) {
return HttpErrorResponse.applicationLockFailure(getMessage(e, request));
} catch (ParentHostUnavailableException e) {
return HttpErrorResponse.parentHostNotReady(getMessage(e, request));
} catch (CertificateNotReadyException e) {
return HttpErrorResponse.certificateNotReady(getMessage(e, request));
} catch (ConfigNotConvergedException e) {
return HttpErrorResponse.configNotConverged(getMessage(e, request));
} catch (LoadBalancerServiceException e) {
return HttpErrorResponse.loadBalancerNotReady(getMessage(e, request));
} catch (Exception e) {
log.log(Level.WARNING, "Unexpected exception handling a config server request", e);
return HttpErrorResponse.internalServerError(getMessage(e, request));
}
}
protected static Duration getRequestTimeout(HttpRequest request, Duration defaultTimeout) {
if ( ! request.hasProperty("timeout")) {
return defaultTimeout;
}
try {
return Duration.ofMillis((long) (Double.parseDouble(request.getProperty("timeout")) * 1000));
} catch (Exception e) {
return defaultTimeout;
}
}
private String getMessage(Exception e, HttpRequest request) {
if (request.getBooleanProperty("debug")) {
StringWriter sw = new StringWriter();
PrintWriter pw = new PrintWriter(sw);
e.printStackTrace(pw);
return sw.toString();
} else {
return Exceptions.toMessageString(e);
}
}
/**
* Default implementation of handler for GET requests. Returns an error response.
* Override this method to handle GET requests.
*
* @param request a {@link HttpRequest}
* @return an error response with response code 405
*/
protected HttpResponse handleGET(HttpRequest request) {
return createErrorResponse(request.getMethod());
}
/**
* Default implementation of handler for POST requests. Returns an error response.
* Override this method to handle POST requests.
*
* @param request a {@link HttpRequest}
* @return an error response with response code 405
*/
protected HttpResponse handlePOST(HttpRequest request) {
return createErrorResponse(request.getMethod());
}
/**
* Default implementation of handler for PUT requests. Returns an error response.
* Override this method to handle POST requests.
*
* @param request a {@link HttpRequest}
* @return an error response with response code 405
*/
protected HttpResponse handlePUT(HttpRequest request) {
return createErrorResponse(request.getMethod());
}
/**
* Default implementation of handler for DELETE requests. Returns an error response.
* Override this method to handle DELETE requests.
*
* @param request a {@link HttpRequest}
* @return an error response with response code 405
*/
protected HttpResponse handleDELETE(HttpRequest request) {
return createErrorResponse(request.getMethod());
}
/**
* Creates error response when method is not handled
*
* @return an error response with response code 405
*/
private HttpResponse createErrorResponse(com.yahoo.jdisc.http.HttpRequest.Method method) {
return HttpErrorResponse.methodNotAllowed("Method '" + method + "' is not supported");
}
}
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