org.springframework.xd.dirt.rest.DocumentParseResultResourceAssembler.java Source code

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Here is the source code for org.springframework.xd.dirt.rest.DocumentParseResultResourceAssembler.java

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/*
 * Copyright 2015 the original author or authors.
 *
 * Licensed 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.springframework.xd.dirt.rest;

import com.google.common.collect.Lists;

import org.springframework.hateoas.ResourceAssembler;
import org.springframework.xd.dirt.stream.DocumentParseResult;
import org.springframework.xd.dirt.stream.dsl.StreamDefinitionException;
import org.springframework.xd.module.ModuleDescriptor;
import org.springframework.xd.rest.domain.DocumentParseResultResource;
import org.springframework.xd.rest.domain.RESTModuleType;

/**
 * This class is responsible for creating a REST representation of a DocumentParseResult.
 *
 * @author Eric Bottard
 */
public class DocumentParseResultResourceAssembler
        implements ResourceAssembler<DocumentParseResult, DocumentParseResultResource> {

    @Override
    public DocumentParseResultResource toResource(DocumentParseResult entity) {
        DocumentParseResultResource resource = new DocumentParseResultResource();
        for (DocumentParseResult.Line line : entity) {
            DocumentParseResultResource.Line resourceLine = new DocumentParseResultResource.Line();

            // Add any exceptions to the response for this line
            if (line.getExceptions() != null) {

                for (Exception e : line.getExceptions()) {

                    if (e instanceof StreamDefinitionException) {
                        StreamDefinitionException sde = (StreamDefinitionException) e;
                        resourceLine.addError(
                                new DocumentParseResultResource.Error(sde.getMessage(), sde.getPosition()));
                    } else {
                        resourceLine.addError(new DocumentParseResultResource.Error(e.getMessage()));
                    }
                }
            }
            // If any modules were parsed, include that in the response
            if (line.getDescriptors() != null) {
                for (ModuleDescriptor md : Lists.reverse(line.getDescriptors())) {
                    resourceLine.addDescriptor(new DocumentParseResultResource.ModuleDescriptor(md.getGroup(),
                            md.getModuleLabel(), RESTModuleType.valueOf(md.getType().name()), md.getModuleName(),
                            md.getSourceChannelName(), md.getSinkChannelName(), md.getParameters()));
                }
            }
            resource.addLine(resourceLine);
        }
        return resource;
    }
}