org.kie.server.remote.rest.jbpm.search.ProcessInstanceSearchResource.java Source code

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Here is the source code for org.kie.server.remote.rest.jbpm.search.ProcessInstanceSearchResource.java

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/*
 * Copyright 2017 Red Hat, Inc. and/or its affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 *
 *      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.kie.server.remote.rest.jbpm.search;

import static org.kie.server.api.rest.RestURI.PROCESS_INSTANCES_GET_FILTERED_URI;
import static org.kie.server.remote.rest.common.util.RestUtils.badRequest;
import static org.kie.server.remote.rest.common.util.RestUtils.buildConversationIdHeader;
import static org.kie.server.remote.rest.common.util.RestUtils.createCorrectVariant;
import static org.kie.server.remote.rest.common.util.RestUtils.getContentType;
import static org.kie.server.remote.rest.common.util.RestUtils.getVariant;
import static org.kie.server.remote.rest.common.util.RestUtils.internalServerError;
import static org.kie.server.remote.rest.jbpm.resources.Messages.BAD_REQUEST;
import static org.kie.server.remote.rest.jbpm.resources.Messages.UNEXPECTED_ERROR;

import java.text.MessageFormat;

import javax.ws.rs.DefaultValue;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.QueryParam;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.HttpHeaders;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;

import org.apache.commons.lang3.exception.ExceptionUtils;
import org.dashbuilder.dataset.exception.DataSetLookupException;
import org.kie.server.api.model.instance.ProcessInstanceList;
import org.kie.server.common.rest.HttpStatusCodeException;
import org.kie.server.remote.rest.common.Header;
import org.kie.server.services.api.KieServerRegistry;
import org.kie.server.services.jbpm.search.ProcessInstanceSearchServiceBase;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

@Path("server/" + PROCESS_INSTANCES_GET_FILTERED_URI)
public class ProcessInstanceSearchResource {

    private static final Logger logger = LoggerFactory.getLogger(TaskSearchResource.class);

    private ProcessInstanceSearchServiceBase processInstanceQueryServiceBase;
    private KieServerRegistry context;

    public ProcessInstanceSearchResource() {

    }

    public ProcessInstanceSearchResource(ProcessInstanceSearchServiceBase processInstanceQueryServiceBase,
            KieServerRegistry context) {
        this.processInstanceQueryServiceBase = processInstanceQueryServiceBase;
        this.context = context;
    }

    //TODO: We now only support standard QueryFilterSpec configurations ... Do we also need to support builders???
    @POST
    @Produces({ MediaType.APPLICATION_XML, MediaType.APPLICATION_JSON })
    public Response getProcessInstancesWithFilters(@Context HttpHeaders headers,
            @QueryParam("page") @DefaultValue("0") Integer page,
            @QueryParam("pageSize") @DefaultValue("10") Integer pageSize, String payload) {

        String type = getContentType(headers);
        // no container id available so only  used to transfer conversation id if given by client.
        Header conversationIdHeader = buildConversationIdHeader("", context, headers);

        try {
            ProcessInstanceList result = processInstanceQueryServiceBase.getProcessInstancesWithFilters(page,
                    pageSize, payload, type);

            logger.debug("Returning result of process instance search: {}", result);

            return createCorrectVariant(result, headers, Response.Status.OK, conversationIdHeader);
        } catch (Exception e) {
            Throwable root = ExceptionUtils.getRootCause(e);
            if (root == null) {
                root = e;
            }
            if (HttpStatusCodeException.BAD_REQUEST.contains(root.getClass())
                    || e instanceof DataSetLookupException) {

                logger.error("{}", MessageFormat.format(BAD_REQUEST, root.getMessage()), e);
                return badRequest(MessageFormat.format(BAD_REQUEST, root.getMessage()), getVariant(headers),
                        conversationIdHeader);
            } else {

                logger.error("{}", MessageFormat.format(UNEXPECTED_ERROR, e.getMessage()), e);
                return internalServerError(MessageFormat.format(UNEXPECTED_ERROR, e.getMessage()),
                        getVariant(headers), conversationIdHeader);
            }
        }
    }

}