2 * Copyright (c) 2014, 2015 Brocade Communications Systems, Inc. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
8 package org.opendaylight.controller.sample.kitchen.impl;
10 import com.google.common.collect.ImmutableList;
11 import com.google.common.collect.ImmutableList.Builder;
12 import com.google.common.util.concurrent.Futures;
13 import com.google.common.util.concurrent.ListenableFuture;
14 import com.google.common.util.concurrent.ListeningExecutorService;
15 import com.google.common.util.concurrent.MoreExecutors;
16 import java.util.List;
17 import java.util.concurrent.ExecutionException;
18 import java.util.concurrent.Executors;
19 import javax.annotation.PreDestroy;
20 import javax.inject.Inject;
21 import javax.inject.Singleton;
22 import org.opendaylight.controller.md.sal.common.util.jmx.AbstractMXBean;
23 import org.opendaylight.controller.sample.kitchen.api.EggsType;
24 import org.opendaylight.controller.sample.kitchen.api.KitchenService;
25 import org.opendaylight.controller.sample.kitchen.api.KitchenServiceRuntimeMXBean;
26 import org.opendaylight.mdsal.binding.api.NotificationService;
27 import org.opendaylight.mdsal.binding.api.RpcConsumerRegistry;
28 import org.opendaylight.yang.gen.v1.http.netconfcentral.org.ns.toaster.rev091120.MakeToastInput;
29 import org.opendaylight.yang.gen.v1.http.netconfcentral.org.ns.toaster.rev091120.MakeToastInputBuilder;
30 import org.opendaylight.yang.gen.v1.http.netconfcentral.org.ns.toaster.rev091120.MakeToastOutput;
31 import org.opendaylight.yang.gen.v1.http.netconfcentral.org.ns.toaster.rev091120.MakeToastOutputBuilder;
32 import org.opendaylight.yang.gen.v1.http.netconfcentral.org.ns.toaster.rev091120.ToastType;
33 import org.opendaylight.yang.gen.v1.http.netconfcentral.org.ns.toaster.rev091120.ToasterListener;
34 import org.opendaylight.yang.gen.v1.http.netconfcentral.org.ns.toaster.rev091120.ToasterOutOfBread;
35 import org.opendaylight.yang.gen.v1.http.netconfcentral.org.ns.toaster.rev091120.ToasterRestocked;
36 import org.opendaylight.yang.gen.v1.http.netconfcentral.org.ns.toaster.rev091120.ToasterService;
37 import org.opendaylight.yang.gen.v1.http.netconfcentral.org.ns.toaster.rev091120.WheatBread;
38 import org.opendaylight.yangtools.concepts.Registration;
39 import org.opendaylight.yangtools.yang.common.ErrorTag;
40 import org.opendaylight.yangtools.yang.common.ErrorType;
41 import org.opendaylight.yangtools.yang.common.RpcError;
42 import org.opendaylight.yangtools.yang.common.RpcResult;
43 import org.opendaylight.yangtools.yang.common.RpcResultBuilder;
44 import org.opendaylight.yangtools.yang.common.Uint32;
45 import org.osgi.service.component.annotations.Activate;
46 import org.osgi.service.component.annotations.Component;
47 import org.osgi.service.component.annotations.Deactivate;
48 import org.osgi.service.component.annotations.Reference;
49 import org.slf4j.Logger;
50 import org.slf4j.LoggerFactory;
53 @Component(service = KitchenService.class, immediate = true)
54 public final class KitchenServiceImpl extends AbstractMXBean
55 implements KitchenService, KitchenServiceRuntimeMXBean, ToasterListener {
57 private static final Logger LOG = LoggerFactory.getLogger(KitchenServiceImpl.class);
58 private static final MakeToastOutput EMPTY_MAKE_OUTPUT = new MakeToastOutputBuilder().build();
60 private final ListeningExecutorService executor = MoreExecutors.listeningDecorator(Executors.newCachedThreadPool());
61 private final ToasterService toaster;
62 private final Registration reg;
64 private volatile boolean toasterOutOfBread;
68 public KitchenServiceImpl(@Reference final RpcConsumerRegistry rpcRegistry,
69 @Reference final NotificationService notifService) {
70 super("KitchenService", "toaster-consumer", null);
71 toaster = rpcRegistry.getRpcService(ToasterService.class);
72 reg = notifService.registerNotificationListener(this);
84 public ListenableFuture<RpcResult<Void>> makeBreakfast(final EggsType eggsType, final ToastType toastType,
85 final int toastDoneness) {
86 // Call makeToast, The OpendaylightToaster impl already returns a ListenableFuture so the conversion is
89 ListenableFuture<RpcResult<MakeToastOutput>> makeToastFuture = makeToast(toastType, toastDoneness);
91 ListenableFuture<RpcResult<Void>> makeEggsFuture = makeEggs(eggsType);
93 // Combine the 2 ListenableFutures into 1 containing a list RpcResults.
95 ListenableFuture<List<RpcResult<? extends Object>>> combinedFutures = Futures
96 .allAsList(ImmutableList.of(makeToastFuture, makeEggsFuture));
98 // Then transform the RpcResults into 1.
100 return Futures.transformAsync(combinedFutures, results -> {
101 boolean atLeastOneSucceeded = false;
102 Builder<RpcError> errorList = ImmutableList.builder();
103 for (RpcResult<? extends Object> result : results) {
104 if (result.isSuccessful()) {
105 atLeastOneSucceeded = true;
108 if (result.getErrors() != null) {
109 errorList.addAll(result.getErrors());
113 return RpcResultBuilder.<Void>status(atLeastOneSucceeded).withRpcErrors(errorList.build()).buildFuture();
114 }, MoreExecutors.directExecutor());
117 private ListenableFuture<RpcResult<Void>> makeEggs(final EggsType eggsType) {
118 return executor.submit(() -> RpcResultBuilder.<Void>success().build());
121 private ListenableFuture<RpcResult<MakeToastOutput>> makeToast(final ToastType toastType, final int toastDoneness) {
122 if (toasterOutOfBread) {
123 LOG.info("We're out of toast but we can make eggs");
124 return RpcResultBuilder.success(EMPTY_MAKE_OUTPUT)
125 .withWarning(ErrorType.APPLICATION, ErrorTag.PARTIAL_OPERATION,
126 "Toaster is out of bread but we can make you eggs")
130 // Access the ToasterService to make the toast.
132 MakeToastInput toastInput = new MakeToastInputBuilder().setToasterDoneness(Uint32.valueOf(toastDoneness))
133 .setToasterToastType(toastType).build();
135 return toaster.makeToast(toastInput);
139 public Boolean makeScrambledWithWheat() {
141 // This call has to block since we must return a result to the JMX client.
142 RpcResult<Void> result = makeBreakfast(EggsType.SCRAMBLED, WheatBread.VALUE, 2).get();
143 if (result.isSuccessful()) {
144 LOG.info("makeBreakfast succeeded");
146 LOG.warn("makeBreakfast failed: {}", result.getErrors());
149 return result.isSuccessful();
150 } catch (InterruptedException | ExecutionException e) {
151 LOG.warn("An error occurred while maing breakfast", e);
154 return Boolean.FALSE;
158 * Implemented from the ToasterListener interface.
161 public void onToasterOutOfBread(final ToasterOutOfBread notification) {
162 LOG.info("ToasterOutOfBread notification");
163 toasterOutOfBread = true;
167 * Implemented from the ToasterListener interface.
170 public void onToasterRestocked(final ToasterRestocked notification) {
171 LOG.info("ToasterRestocked notification - amountOfBread: {}", notification.getAmountOfBread());
172 toasterOutOfBread = false;