/**
* 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 demo.jaxrs.server;
import java.io.IOException;
import java.io.OutputStream;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import javax.ws.rs.DELETE;
import javax.ws.rs.GET;
import javax.ws.rs.POST;
import javax.ws.rs.PUT;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.StreamingOutput;
@Path("/customerservice/")
@Produces("text/xml")
public class CustomerService {
private static ExecutorService executor = Executors.newSingleThreadExecutor();
long currentId = 123;
Map<Long, Customer> customers = new HashMap<Long, Customer>();
Map<Long, Order> orders = new HashMap<Long, Order>();
Set<OutputStream> monitors = new HashSet<OutputStream>();
public CustomerService() {
init();
}
@GET
@Path("/customers/{id}/")
public Customer getCustomer(@PathParam("id") String id) {
System.out.println("----invoking getCustomer, Customer id is: " + id);
long idNumber = Long.parseLong(id);
Customer customer = customers.get(idNumber);
sendCustomerEvent("retrieved", customer);
return customer;
}
@PUT
@Path("/customers/")
public Response updateCustomer(Customer customer) {
System.out.println("----invoking updateCustomer, Customer name is: " + customer.getName());
Customer c = customers.get(customer.getId());
Response r;
if (c != null) {
customers.put(customer.getId(), customer);
r = Response.ok().build();
sendCustomerEvent("updated", customer);
} else {
r = Response.notModified().build();
}
return r;
}
@POST
@Path("/customers/")
public Response addCustomer(Customer customer) {
System.out.println("----invoking addCustomer, Customer name is: " + customer.getName());
customer.setId(++currentId);
customers.put(customer.getId(), customer);
sendCustomerEvent("added", customer);
return Response.ok(customer).build();
}
@DELETE
@Path("/customers/{id}/")
public Response deleteCustomer(@PathParam("id") String id) {
System.out.println("----invoking deleteCustomer, Customer id is: " + id);
long idNumber = Long.parseLong(id);
Customer c = customers.get(idNumber);
Response r;
if (c != null) {
r = Response.ok().build();
Customer customer = customers.remove(idNumber);
if (customer != null) {
sendCustomerEvent("deleted", customer);
}
} else {
r = Response.notModified().build();
}
return r;
}
@Path("/orders/{orderId}/")
public Order getOrder(@PathParam("orderId") String orderId) {
System.out.println("----invoking getOrder, Order id is: " + orderId);
long idNumber = Long.parseLong(orderId);
Order c = orders.get(idNumber);
return c;
}
@GET
@Path("/monitor")
@Produces("text/*")
public StreamingOutput getBookBought() {
return new StreamingOutput() {
public void write(final OutputStream out) throws IOException, WebApplicationException {
monitors.add(out);
out.write(("Subscribed at " + new java.util.Date()).getBytes());
}
};
}
private void sendCustomerEvent(final String msg, final Customer customer) {
executor.execute(new Runnable() {
public void run() {
try {
String t = msg + ": " + customer.getId() + "/" + customer.getName();
for (Iterator<OutputStream> it = monitors.iterator(); it.hasNext();) {
OutputStream out = it.next();
try {
out.write(t.getBytes());
} catch (IOException e) {
try {
out.close();
} catch (IOException e2) {
// ignore;
}
it.remove();
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
final void init() {
Customer c = new Customer();
c.setName("John");
c.setId(123);
customers.put(c.getId(), c);
c = new Customer();
c.setName("Homer");
c.setId(235);
customers.put(c.getId(), c);
Order o = new Order();
o.setDescription("order 223");
o.setId(223);
orders.put(o.getId(), o);
}
}