MqttEmbeddedBroker IO extension #3910

davidgraeff · 2017-07-30T09:07:24Z

This is an extension to PR #3839 (Mqtt Broker configuration).

Abstract

Mqtt can be seen as an important IoT protocol next to CoAP but with different goals and a different architecture. CoAP is supported within ESH with the Californium library and at the moment bindings just use the raw library without any transport abstraction. Which is fine for CoAP. Mqtt on the other side needs a central additional component, the Mqtt broker. This binding lowers the entry barrier into the Mqtt world and allows to start a secure, correctly configured Mqtt server with a button click.

Features

This bundle contains an embedded broker (Moquette) and will create a MqttBrokerConnection instance shared with the MqttService so that other bindings, especially the MQTT Broker Binding can use the Broker.

Plain tcp and also secure ssl connection (with #4105) are possible for external clients, depending on the configuration.

The service is configured via ConfigAdmin but implements ConfigurableService to be configurable via PaperUI as well.

3rd party licenses

The Moquette server is licensed as EPL 1.0 / Apache 2.0, the required jetty tcp server is licensed as Apache 2.0.

kaikreuzer · 2017-08-03T14:48:34Z

Hi @davidgraeff!

This is a feature I was hoping for since a long while 👍
For all MQTT-enabled devices, it is really nice when ESH comes with an embedded broker instead of requiring a separate instance somewhere.

So regarding your discussion point: I would clearly say that this can go into ESH, especially as Moquette once almost managed to become an Eclipse project as well.

I wouldn't call this a "binding" through (this is where you have currently put it). I'd think the better place would be https://github.com/eclipse/smarthome/tree/master/extensions/io, i.e. calling it "some I/O related extension".

davidgraeff · 2017-09-01T10:06:48Z

@kaikreuzer Just to be on the same side here:

The embedded broker will use ConfigurableServices so that it can be enabled/disabled via the GUI. It will add its connection to the MqttService.
The handler and discovery part are removed.

kaikreuzer · 2017-09-01T10:19:23Z

Sound good 👍

sjsf · 2017-10-04T15:22:20Z

I might be a little late to the party, but hopefully you don't mind asking this question anyway: Why exactly do you all think it makes sense to have an embedded MQTT server within ESH? I mean, there are brilliant, easy-to-setup standalone brokers out there, working nicely as a standalone service. Isn't the approach of embedding it pretty much against the micro service idea of doing one thing (and doing it good) as opposed to the old JEE world of putting everything into the same process?
Don't get me wrong, it certainly makes sense to have good MQTT support within ESH, but ESH becoming also a MQTT server goes a little too far, IMHO. Hence I'm trying to understand the reasoning for this proposal...

davidgraeff · 2017-10-04T16:00:01Z

I agree that an Mqtt server should not be part of the core and nothing should rely on this and it should not run in the same process. This is why this bundle is as independent as possible and the MQTT server runs in its own process.

Because Mqtt is a key protocol and only works with a server, it might be a good idea to provide a out of the box working a good solution here. Mqtt can be used for ESH instance sycronisation for example. I see this bundle as extension. like any other extensions, it is discussable if it should be in the core repository.

kaikreuzer · 2017-10-04T17:01:39Z

there are brilliant, easy-to-setup standalone brokers out there, working nicely as a standalone service.

But that is the problem: These are external services that you need to setup and configure accordingly. You cannot easily build integrations using MQTT as you are always just a client, but not the server. Like supporting sensors that use MQTT and that need to be told where to connect to (=the ESH instance).

Isn't the approach of embedding it pretty much against the micro service idea

Microservices in an OSGi sense are services WITHIN the same JVM - and that's the approach here.
We are definitely not doing micro-services on a process level, otherwise we should also consider moving out the HTTP server, the event admin and having all bindings as separate processes.

Note that the feature discussed here is merely to wrap an existing broker, not to implement any on our own. And as @davidgraeff says, it is a fully optional component that nobody is required to use - but imho it can be tremendously helpful for many.

kaikreuzer

Hi @davidgraeff,

What is the status of this PR? Are you waiting for any discussions/decisions? Imho, this PR should be pretty unrelated to most of the rest and mergable on its own, do you agree?

kaikreuzer · 2017-10-10T12:00:39Z

...rc/main/java/org/eclipse/smarthome/io/mqttembeddedbroker/internal/EmbeddedBrokerService.java

+ *
+ * @author David Graeff - Initial contribution
+ */
+@Component(immediate = true, configurationPid = { "mqttembeddedbroker" }, property = {


pid should always be prefixed by "org.eclipse.smarthome."

kaikreuzer · 2017-10-10T12:01:06Z

extensions/io/org.eclipse.smarthome.io.mqttembeddedbroker/pom.xml

+	<artifactId>org.eclipse.smarthome.io.mqttembeddedbroker</artifactId>
+	<version>0.9.0-SNAPSHOT</version>
+
+	<name>MqttBroker Binding</name>


This is not a binding.
Change to "Embedded MQTT Broker"

kaikreuzer · 2017-10-10T12:01:49Z

...src/main/java/org/eclipse/smarthome/io/mqttembeddedbroker/internal/ServiceConfiguration.java

@@ -0,0 +1,10 @@
+package org.eclipse.smarthome.io.mqttembeddedbroker.internal;


license header missing

kaikreuzer · 2017-10-10T12:01:56Z

...src/main/java/org/eclipse/smarthome/io/mqttembeddedbroker/internal/ServiceConfiguration.java

@@ -0,0 +1,10 @@
+package org.eclipse.smarthome.io.mqttembeddedbroker.internal;
+
+public class ServiceConfiguration {


javadoc missing

kaikreuzer · 2017-10-10T12:02:50Z

extensions/io/org.eclipse.smarthome.io.mqttembeddedbroker/README.md

@@ -0,0 +1,32 @@
+# MqttEmbeddedBroker Binding


This is not a binding.
Change it to "Embedded MQTT Broker"

@davidgraeff ping :-)

kaikreuzer · 2017-10-10T12:04:04Z

extensions/io/org.eclipse.smarthome.io.mqttembeddedbroker/README.md

+* __secure__: If set, hosts a secure SSL connection on port 8883 or otherwise a non secure connection on port 1883 (if not overwritten by the port parameter).
+* __persistence_file__: The file were messages are stored for a persistence feature. Can be empty. Defaults to _moquette.msgs_.
+
+## Channels


kaikreuzer · 2017-10-10T12:04:09Z

extensions/io/org.eclipse.smarthome.io.mqttembeddedbroker/README.md

+
+There are no channels available. The status message and possible reasons for a failed connection can be accessed through thing properties. The broker connection is successful if the thing is ONLINE.
+
+## Full Example


kaikreuzer · 2017-10-10T12:04:52Z

extensions/io/org.eclipse.smarthome.io.mqttembeddedbroker.test/META-INF/MANIFEST.MF

+Fragment-Host: org.eclipse.smarthome.io.mqttembeddedbroker
+Import-Package: org.eclipse.smarthome.core.common.registry,
+ org.eclipse.smarthome.core.events,
+ org.eclipse.smarthome.core.thing,


There should be no dependency on org.eclipse.smarthome.core.thing

kaikreuzer · 2017-10-10T12:05:08Z

extensions/io/org.eclipse.smarthome.io.mqttembeddedbroker/META-INF/MANIFEST.MF

+ org.eclipse.smarthome.config.core,
+ org.eclipse.smarthome.config.discovery,
+ org.eclipse.smarthome.core.library.types,
+ org.eclipse.smarthome.core.thing,


There should be no dependency on org.eclipse.smarthome.core.thing.*

kaikreuzer · 2017-10-10T12:05:22Z

extensions/io/org.eclipse.smarthome.io.mqttembeddedbroker/META-INF/MANIFEST.MF

+ org.eclipse.jdt.annotation;resolution:=optional,
+ org.osgi.service.component.annotations;resolution:=optional,
+ org.eclipse.smarthome.config.core,
+ org.eclipse.smarthome.config.discovery,


There should be no dependency on org.eclipse.smarthome.config.discovery.

davidgraeff · 2017-10-10T12:18:30Z

@kaikreuzer I'm in Japan and cannot contribute code at the moment. All my PRs are on hold.

kaikreuzer · 2017-11-21T10:59:26Z

I assume you are back, at least I have seen you recently ;-)
Any chance to incorporate the feedback? Would be cool to get that merged some day!

kaikreuzer · 2018-01-15T10:27:04Z

@davidgraeff Friendly ping!

kaikreuzer · 2018-02-06T08:44:42Z

@davidgraeff Another friendly ping.
In case you do not plan to finish this, please state so as well, so that we know that somebody else would have to take this over. But as it is almost done and just a few small changes are required for the merge, I very much hope that you can find the time for it.

davidgraeff · 2018-02-07T02:51:45Z

Unfortunate timing that we didn't finish those PRs before I went for another traveling journey but I'm back end of the week.

kaikreuzer · 2018-02-16T08:03:48Z

@davidgraeff Did you find any time for it?

kaikreuzer · 2018-03-06T14:49:44Z

@davidgraeff Another friendly ping!

kaikreuzer · 2018-03-14T20:58:41Z

@davidgraeff As you are active tonight: Any chance to finally address this?

davidgraeff · 2018-03-14T21:02:15Z

It's a 12h/d work week atm, but yes I want this to be included as well. I just first addressed all OpenHab issues and PRs on my todo list.

davidgraeff · 2018-03-17T12:29:41Z

All issues addressed and license headers are updated. PR depends on #4173. Does not depend on any SSL service implementation yet. I have commented out the affected code parts, but I'd like to keep them until #4105 is resolved.

htreu

Some comments inline.

htreu · 2018-03-29T05:08:30Z

extensions/io/org.eclipse.smarthome.io.mqttembeddedbroker/README.md

@@ -0,0 +1,32 @@
+# MqttEmbeddedBroker Binding


@davidgraeff ping :-)

htreu · 2018-03-29T05:09:34Z

extensions/io/org.eclipse.smarthome.io.mqttembeddedbroker/about.html

@@ -0,0 +1,32 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"


drop about.html, replace by NOTICE file.

htreu · 2018-03-29T05:09:43Z

extensions/io/org.eclipse.smarthome.io.mqttembeddedbroker/build.properties

+             OSGI-INF/,\
+             ESH-INF/,\
+             lib/*.jar,\
+             about.html


replace with NOTICE

htreu · 2018-03-29T08:20:10Z

...java/org/eclipse/smarthome/io/mqttembeddedbroker/internal/MqttEmbeddedBrokerDetectStart.java

+     */
+    public void stopBrokerStartDetection() {
+        if (schedule != null) {
+            schedule.cancel(true);


should schedule also be set to null here?

doesn't hurt, I've added that

htreu · 2018-03-29T08:21:30Z

...ain/java/org/eclipse/smarthome/io/mqttembeddedbroker/internal/MqttEmbeddedBrokerMetrics.java

+ * @author David Graeff - Initial contribution
+ */
+public class MqttEmbeddedBrokerMetrics implements InterceptHandler {
+    public interface BrokerMetricsListener {


please JavaDoc the interface and method.

htreu · 2018-03-29T08:21:50Z

...java/org/eclipse/smarthome/io/mqttembeddedbroker/internal/MqttEmbeddedBrokerDetectStart.java

+     *
+     */
+    public interface MqttEmbeddedBrokerStartedListener {
+        public void mqttEmbeddedBrokerStarted(boolean timeout);


please add JavaDoc for the method.

htreu · 2018-03-29T08:25:00Z

...io.mqttembeddedbroker/src/moquette-dummy-deps/java/com/hazelcast/core/HazelcastInstance.java

+    public Cluster getCluster() {
+        return null;
+    }
+}


missing new-line

davidgraeff · 2018-03-29T13:44:08Z

@htreu Done

maggu2810 · 2018-03-29T14:19:59Z

extensions/io/org.eclipse.smarthome.io.mqttembeddedbroker.test/META-INF/MANIFEST.MF

+Bundle-Name:  MqttBroker Binding Tests
+Bundle-SymbolicName: org.eclipse.smarthome.io.mqttembeddedbroker.test;singleton:=true
+Bundle-Vendor: Eclipse.org/SmartHome
+Bundle-Version: 0.9.0.qualifier


nedds to be updated

maggu2810 · 2018-03-29T14:20:06Z

extensions/io/org.eclipse.smarthome.io.mqttembeddedbroker/META-INF/MANIFEST.MF

+Bundle-Name: Embedded Mqtt Broker
+Bundle-SymbolicName: org.eclipse.smarthome.io.mqttembeddedbroker;singleton:=true
+Bundle-Vendor: Eclipse.org/SmartHome
+Bundle-Version: 0.9.0.qualifier


nedds to be updated

maggu2810 · 2018-03-29T14:20:46Z

extensions/io/org.eclipse.smarthome.io.mqttembeddedbroker/META-INF/MANIFEST.MF

+ org.eclipse.smarthome.io.transport.mqtt,
+ org.eclipse.smarthome.io.transport.mqtt.reconnect,
+ org.eclipse.smarthome.io.transport.mqtt.sslcontext,
+ org.osgi.framework;version="1.8.0",


This version constraint needs to be removed.

maggu2810 · 2018-03-29T14:22:48Z

extensions/io/org.eclipse.smarthome.io.mqttembeddedbroker/META-INF/MANIFEST.MF

+ org.eclipse.smarthome.io.transport.mqtt.sslcontext,
+ org.osgi.framework;version="1.8.0",
+ org.osgi.service.component,
+ org.osgi.service.component.annotations;resolution:=optional,


I assume this should be removed: https://github.com/openhab/openhab2-addons/pull/2878#discussion_r152942296

maggu2810 · 2018-03-29T14:23:05Z

extensions/io/org.eclipse.smarthome.io.mqttembeddedbroker/META-INF/MANIFEST.MF

+ org.osgi.service.component,
+ org.osgi.service.component.annotations;resolution:=optional,
+ org.slf4j
+Comment: TODO Add org.eclipse.smarthome.io.net.security.api for secure connections


I don't think this should be placed in the manifest if in production (merged)

htreu · 2018-04-06T09:07:54Z

extensions/io/org.eclipse.smarthome.io.mqttembeddedbroker/META-INF/MANIFEST.MF

@@ -20,6 +20,7 @@ Import-Package:
 org.eclipse.smarthome.io.transport.mqtt.reconnect,
 org.eclipse.smarthome.io.transport.mqtt.sslcontext,
 org.osgi.framework,
+ org.osgi.service.cm;version="1.5.0",


please remove the version restriction.

Can I teach Eclipse not to add these automatically? Would be awesome

htreu

only one last minute missing NOTICE file.
Otherwise this looks good to me. After approval we need to file a CQ since this exceeds 1k lines.
Also moquette and netty need CQs.

htreu · 2018-04-06T11:53:00Z

extensions/io/org.eclipse.smarthome.io.mqttembeddedbroker.test/build.properties

+           src/test/resources/
+output.. = target/test-classes
+bin.includes = META-INF/,\
+               .


sorry, didn't notice before: NOTICE file is missing.

htreu · 2018-04-06T13:53:37Z

Thanks @davidgraeff! I suggest to freeze this now and file the appropriate CQs. I will do so as soon as privileges are granted to my by eclipse.org.

davidgraeff · 2018-04-06T13:58:13Z

All right.
@kaikreuzer need to change his "requested changes" flag to make it all green ^^

htreu · 2018-04-09T07:27:09Z

CQs created for

moquette-broker-0.10: CQ16090
netty-all-4.1.19.Final: CQ16091 (PB CQ15280)

htreu · 2018-04-09T07:30:22Z

@davidgraeff since netty-4.1.19 was the most recent version approved by the eclipse IP team please update the version used here to 4.1.19 (instead of 4.1.13). The netty change log lists a lot of bug fixes for this version bump.
Thanks.

davidgraeff · 2018-04-09T10:54:02Z

Moquette 0.10 has some memory leak issues (https://github.com/andsel/moquette/issues/385). It should be upgraded as well as soon as 0.11 is out.

htreu · 2018-04-09T11:53:17Z

Thanks @davidgraeff. Lets first see what the eclipse IP team can make out of the 0.10 version.

FYI: netty CQ16091 is already approved.

maggu2810 · 2018-04-09T11:56:07Z

Moquette 0.10 has some memory leak issues (https://github.com/andsel/moquette/issues/385). It should be upgraded as well as soon as 0.11 is out.

Thanks for pointing that out. Adding something that is already known to eat memory sounds a little bit weird.
Do you know how much memory is leaked and under which situations (e.g. does it depend on uptime only or on the number of published messages, ...)?
Do we need some documentation that it should not be used in production?

davidgraeff · 2018-04-09T12:00:12Z

@maggu2810 Netty is just used to convert the received/published messages so publishing/receiving causes memory leaks and not concurrent connections.

htreu · 2018-04-20T04:27:52Z

CQ16090 for moquette is still not approved but we have clearance to proceed with the checkin. I will start a last review before issuing a CQ for the actual code.

htreu

Hi @davidgraeff I found some remaining issue. See below and inline. Thanks.

Please remove the lib/moquette-broker-src-0.10.zip since we have a binary-only CQ approved.

When I finally got this to run the following log entries appear:

08:34:17.891 WARN  i.m.s.DefaultMoquetteSslContextCreator[:54] - The keystore path is null or empty. The SSL context won't be initialized.
08:34:17.891 ERROR i.m.server.netty.NettyAcceptor[:164] - Can't initialize SSLHandler layer! Exiting, check your configuration of jks

which leads to a stopped moquette broker.

htreu · 2018-04-20T04:40:15Z

extensions/io/org.eclipse.smarthome.io.mqttembeddedbroker.test/META-INF/MANIFEST.MF

@@ -0,0 +1,20 @@
+Manifest-Version: 1.0
+Bundle-ManifestVersion: 2
+Bundle-Name:  MqttBroker Binding Tests


one obsolete " " here

htreu · 2018-04-20T04:40:45Z

extensions/io/org.eclipse.smarthome.io.mqttembeddedbroker.test/pom.xml

+    <bundle.namespace>org.eclipse.smarthome.io.mqttembeddedbroker</bundle.namespace>
+  </properties>
+
+


htreu · 2018-04-20T04:42:48Z

...java/org/eclipse/smarthome/io/mqttembeddedbroker/internal/MqttEmbeddedBrokerServiceTest.java

@@ -0,0 +1,144 @@
+/**
+ * Copyright (c) 2010-2017 by the respective copyright holders.


please update all license headers to EPL 2
Use the command mvn license:format -pl extensions/io/org.eclipse.smarthome.io.mqttembeddedbroker.test from the project root.

htreu · 2018-04-20T04:44:44Z

...java/org/eclipse/smarthome/io/mqttembeddedbroker/internal/MqttEmbeddedBrokerServiceTest.java

+public class MqttEmbeddedBrokerServiceTest {
+
+    // Create an accept all trust manager for a client SSLContext
+    private static class X509ExtendedTrustManagerEx extends X509ExtendedTrustManager {


this class seems to be unused right now, please add a @SuppressWarnings("unused") so the whole test project is free of warnings.

htreu · 2018-04-20T04:45:06Z

...java/org/eclipse/smarthome/io/mqttembeddedbroker/internal/MqttEmbeddedBrokerServiceTest.java

+        }
+    }
+
+    EmbeddedBrokerService subject;


should be private

htreu · 2018-04-20T06:29:55Z

...rc/main/java/org/eclipse/smarthome/io/mqttembeddedbroker/internal/EmbeddedBrokerService.java

+ *
+ * @author David Graeff - Initial contribution
+ */
+@Component(immediate = true, service = EmbeddedBrokerService.class, configurationPid = {


configurationPid must not be a String[]

htreu · 2018-04-20T06:30:24Z

...rc/main/java/org/eclipse/smarthome/io/mqttembeddedbroker/internal/EmbeddedBrokerService.java

+    public MqttBrokerConnection connection;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
+    public void setMqttService(MqttService service) {


please also add the unbind method

I thought, an unbind method is not required if ReferenceCardinality.MANDATORY is set, because the entire service is teared down if the mandatory referenced service died.

htreu · 2018-04-20T06:32:19Z

extensions/io/org.eclipse.smarthome.io.mqttembeddedbroker/META-INF/MANIFEST.MF

+Bundle-Vendor: Eclipse.org/SmartHome
+Bundle-Version: 0.10.0.qualifier
+Bundle-RequiredExecutionEnvironment: JavaSE-1.8
+Bundle-ClassPath: ., lib/moquette-broker-0.10.jar, lib/netty-all-4.1.13.Final.jar


its netty 4.1.19 now

htreu · 2018-04-20T06:38:17Z

extensions/io/org.eclipse.smarthome.io.mqttembeddedbroker/build.properties

+               .,\
+               OSGI-INF/,\
+               ESH-INF/,\
+               lib/*.jar,\


with the moquette source zip removed this can be changed to lib/

htreu · 2018-04-20T06:38:46Z

extensions/io/org.eclipse.smarthome.io.mqttembeddedbroker/README.md

+
+This bundle allows to configure and start an embedded MQTT Server (based on (Moquette)[https://github.com/andsel/moquette]) for an easy way to have an MQTT Server up and running with a click.
+
+## Supported Things


The bundle now adds a service, please update the docs accordingly.

htreu

Thanks @davidgraeff. I will create the corresponding CQ. Please do not change this PR anymore.

This io/extension can add a Mqtt broker connection and start an embedded broker (Moquette). It allows secure connection via a provided and configured certificate or creates a self-signed certificate and key on the first start otherwise. Signed-off-by: David Graeff <david.graeff@web.de>

htreu · 2018-04-23T13:24:18Z

FTR: all commits squashed and CQ16166 created.

edit: link removed.

htreu · 2018-04-27T05:49:15Z

CQ16166 got approved. Ready to go.

This io/extension can add a Mqtt broker connection and start an embedded broker (Moquette). It allows secure connection via a provided and configured certificate or creates a self-signed certificate and key on the first start otherwise. Signed-off-by: David Graeff <david.graeff@web.de>

davidgraeff changed the title ~~MqttEmbeddedBroker binding~~ [Feedback required] MqttEmbeddedBroker binding Jul 30, 2017

davidgraeff force-pushed the mqtt_embedded branch 2 times, most recently from 259b1d5 to 684644a Compare August 15, 2017 14:36

davidgraeff changed the title ~~[Feedback required] MqttEmbeddedBroker binding~~ MqttEmbeddedBroker IO extension Aug 16, 2017

davidgraeff mentioned this pull request Aug 18, 2017

New service for providing SSL/DTLS configuration #4088

Closed

davidgraeff force-pushed the mqtt_embedded branch from 684644a to 23234ab Compare August 22, 2017 03:54

davidgraeff mentioned this pull request Aug 22, 2017

SSL/DTLS service #4105

Closed

kaikreuzer mentioned this pull request Aug 30, 2017

Mqtt Broker configuration binding #3839

Merged

davidgraeff force-pushed the mqtt_embedded branch from 23234ab to c58126f Compare September 6, 2017 17:10

kaikreuzer suggested changes Oct 10, 2017

View reviewed changes

davidgraeff force-pushed the mqtt_embedded branch 3 times, most recently from 8787bd6 to 17e3fe1 Compare March 17, 2018 12:19

davidgraeff force-pushed the mqtt_embedded branch from 17e3fe1 to 7324c5f Compare March 17, 2018 12:33

davidgraeff force-pushed the mqtt_embedded branch from 7324c5f to c0fc95d Compare March 17, 2018 14:52

htreu reviewed Mar 29, 2018

View reviewed changes

maggu2810 reviewed Mar 29, 2018

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htreu reviewed Apr 6, 2018

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htreu suggested changes Apr 20, 2018

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kaikreuzer approved these changes Apr 23, 2018

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htreu approved these changes Apr 23, 2018

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htreu force-pushed the mqtt_embedded branch from 230831d to cda10d1 Compare April 23, 2018 13:02

htreu added the CQ label Apr 23, 2018

htreu removed the CQ label Apr 27, 2018

htreu merged commit 592b52c into eclipse-archived:master Apr 27, 2018

davidgraeff deleted the mqtt_embedded branch April 27, 2018 08:26

htreu added this to the 0.10.0 milestone Oct 30, 2018

		@@ -0,0 +1,10 @@
		package org.eclipse.smarthome.io.mqttembeddedbroker.internal;

		@@ -0,0 +1,10 @@
		package org.eclipse.smarthome.io.mqttembeddedbroker.internal;

		public class ServiceConfiguration {


		There are no channels available. The status message and possible reasons for a failed connection can be accessed through thing properties. The broker connection is successful if the thing is ONLINE.

		## Full Example

		@@ -0,0 +1,32 @@
		<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"

		<bundle.namespace>org.eclipse.smarthome.io.mqttembeddedbroker</bundle.namespace>
		</properties>

		@@ -0,0 +1,144 @@
		/**
		* Copyright (c) 2010-2017 by the respective copyright holders.


		This bundle allows to configure and start an embedded MQTT Server (based on (Moquette)[https://github.com/andsel/moquette]) for an easy way to have an MQTT Server up and running with a click.

		## Supported Things

MqttEmbeddedBroker IO extension #3910

MqttEmbeddedBroker IO extension #3910

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davidgraeff commented Jul 30, 2017 • edited Loading

Abstract

Features

3rd party licenses

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davidgraeff commented Mar 29, 2018

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htreu commented Apr 6, 2018

davidgraeff commented Apr 6, 2018

htreu commented Apr 9, 2018

htreu commented Apr 9, 2018

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maggu2810 commented Apr 9, 2018

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htreu commented Apr 20, 2018

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davidgraeff commented Jul 30, 2017 •

edited

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davidgraeff commented Mar 17, 2018 •

edited

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htreu commented Apr 23, 2018 •

edited by kaikreuzer

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