examples/camel-example-fhir-osgi/src/main/java/org/apache/camel/example/fhir/osgi/FhirRoute.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.apache.camel.example.fhir.osgi;

import ca.uhn.hl7v2.HL7Exception;
import ca.uhn.hl7v2.model.v24.message.ORU_R01;
import ca.uhn.hl7v2.model.v24.segment.PID;
import org.apache.camel.LoggingLevel;
import org.apache.camel.builder.RouteBuilder;
import org.apache.http.ProtocolException;
import org.hl7.fhir.dstu3.model.Patient;

public class FhirRoute extends RouteBuilder {

    @Override
    public void configure() {
        from("file:{{input}}").routeId("fhir-example-osgi")
            .onException(ProtocolException.class)
                .handled(true)
                .log(LoggingLevel.ERROR, "Error connecting to FHIR server with URL:{{serverUrl}}, "
                        + "please check the org.apache.camel.example.fhir.osgi.configuration.cfg configuration file ${exception.message}")
                .end()
            .onException(HL7Exception.class)
                .handled(true)
                .log(LoggingLevel.ERROR, "Error unmarshalling ${file:name} ${exception.message}")
                .end()
            .log("Converting ${file:name}")
            // unmarshall file to hl7 message
            .unmarshal().hl7()
            // very simple mapping from a HLV2 patient to dstu3 patient
            .process(exchange -> {
                ORU_R01 msg = exchange.getIn().getBody(ORU_R01.class);
                final PID pid = msg.getPATIENT_RESULT().getPATIENT().getPID();
                String surname = pid.getPatientName()[0].getFamilyName().getFn1_Surname().getValue();
                String name = pid.getPatientName()[0].getGivenName().getValue();
                String patientId = msg.getPATIENT_RESULT().getPATIENT().getPID().getPatientID().getCx1_ID().getValue();
                Patient patient = new Patient();
                patient.addName().addGiven(name);
                patient.getNameFirstRep().setFamily(surname);
                patient.setId(patientId);
                exchange.getIn().setBody(patient);
            })
            // marshall to JSON for logging
            .marshal().fhirJson("{{fhirVersion}}")
            .log("Inserting Patient: ${body}")
            // create Patient in our FHIR server
            .to("fhir://create/resource?inBody=resourceAsString&serverUrl={{serverUrl}}&fhirVersion={{fhirVersion}}")
            // log the outcome
            .log("Patient created successfully: ${body.getCreated}");
    }
}