/*******************************************************************************
* Copyright (c) 2012-2017 Codenvy, S.A.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Codenvy, S.A. - initial API and implementation
*******************************************************************************/
package org.eclipse.che.api.git;
import org.eclipse.che.api.git.shared.MergeResult;
import javax.inject.Singleton;
import javax.ws.rs.Produces;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.ext.MessageBodyWriter;
import javax.ws.rs.ext.Provider;
import java.io.IOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.Writer;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
/**
* @author andrew00x
*/
@Singleton
@Provider
@Produces(MediaType.TEXT_PLAIN)
public final class MergeResultWriter implements MessageBodyWriter<MergeResult> {
/**
* @see MessageBodyWriter#isWriteable(Class, java.lang.reflect.Type, java.lang.annotation.Annotation[], javax.ws.rs.core.MediaType)
*/
@Override
public boolean isWriteable(Class< ? > type, Type genericType, Annotation[] annotations, MediaType mediaType) {
return MergeResult.class.isAssignableFrom(type);
}
/**
* @see MessageBodyWriter#getSize(Object, Class, java.lang.reflect.Type, java.lang.annotation.Annotation[], javax.ws.rs.core.MediaType)
*/
@Override
public long getSize(MergeResult mergeResult,
Class< ? > type,
Type genericType,
Annotation[] annotations,
MediaType mediaType) {
return -1;
}
/**
* @see MessageBodyWriter#writeTo(Object, Class, java.lang.reflect.Type, java.lang.annotation.Annotation[], javax.ws.rs.core.MediaType,
* javax.ws.rs.core.MultivaluedMap, java.io.OutputStream)
*/
@Override
public void writeTo(MergeResult mergeResult,
Class< ? > type,
Type genericType,
Annotation[] annotations,
MediaType mediaType,
MultivaluedMap<String, Object> httpHeaders,
OutputStream entityStream) throws IOException, WebApplicationException {
Writer writer = new OutputStreamWriter(entityStream);
MergeResult.MergeStatus status = mergeResult.getMergeStatus();
switch (mergeResult.getMergeStatus()) {
case FAST_FORWARD:
case ALREADY_UP_TO_DATE:
case MERGED:
writer.write(status.toString());
writer.write('\n');
break;
case FAILED:
writer.write("error: Failed to merge:");
for (String failed : mergeResult.getFailed()) {
writer.write(" ");
writer.write(failed);
writer.write('\n');
}
break;
case CONFLICTING:
for (String conflict : mergeResult.getConflicts()) {
writer.write("CONFLICT(content): Merge conflict in: " + conflict);
writer.write('\n');
}
writer.write("Automatic merge failed; fix conflicts and then commit the result");
writer.write('\n');
break;
case NOT_SUPPORTED:
writer.write("Operation not supported");
writer.write('\n');
break;
default:
break;
}
writer.flush();
}
}