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London JBUG - Connecting Applications Everywhere with JBoss A-MQ
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London JBUG - Connecting Applications Everywhere with JBoss A-MQ


Presentation by Rob Davies (Red Hat) delivered at the London JBoss USer Group event on the 10th of July 2013. …

Presentation by Rob Davies (Red Hat) delivered at the London JBoss USer Group event on the 10th of July 2013.
See the video here: http://youtu.be/VrJyKLAXVTg

As part of the FuseSource acquisition, Red Hat now supports Apache ActiveMQ as the recently released Red Hat JBoss A-MQ product.

ActiveMQ is the most widely used message-oriented middleware that uses messaging to connect remote applications written in Java, C/C++, Python, Perl, Ruby, and many other languages. ActiveMQ is standards based and supports messaging protocols such as AMQP 1.0, WebSockets, Stomp, OpenWire, and MQTT.

In this session, Rob Davies will discuss the product’s features and functionality, and demonstrate connectivity from a microprocessor to web sockets using JBoss A-MQ.

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  • 1. 1   redhatRob Davies Connec(ng  Applica(ons  Everywhere  with   JBoss  A-­‐MQ   Rob Davies, Technical Director, Fuse Engineering, Red Hat July 2013
  • 2. 2   redhatRob Davies 2 Rob Davies Technical Director, Red Hat - h"p://www.redhat.com ■  Software projects: ■  Apache ActiveMQ, ■  Apache Camel ■  Apache ServiceMix ■  On  Expert  Group  for  JSR  343:  JMS  2.0   ■  Co-­‐author  of  AcCveMQ  in  AcCon:  
  • 3. 3   redhatRob Davies History  of  Fuse  open  source  Development   2004   2005   2006   2007   2008   2009   2010   2011   2012   ActiveMQ created May 2004 The CodeHaus ServiceMix created May 2005 Camel created March 2007 IONA acquire April 2007 Karaf created Progress acquire October 2008 FuseSource created October 2010 The Apache Software Foundation LogicBlaze Formed May 2005 CXF August 2006 Fabric created February 2011 Fuse Forge And ASF Red Hat acquire Sept 2012
  • 4. 4   redhatRob Davies Why  use  Message-­‐Oriented  Middleware?   •  Robustness  to  change   •  Time  Independence   •  LocaCon  Independence   •  Hide  Latency   •  Scalability   •  Event  driven   •  Simplicity   •  Configurable  Quality  of   Service   •  PlaRorm  and  Language   IntegraCon   •  Fault  tolerant    
  • 5. 5   redhatRob Davies 5 What is Apache ActiveMQ ? •  Top Level Apache Software Foundation Project •  Wildly popular, high performance, reliable message broker •  Connects to nearly everything •  Native Java, C/C++, .Net, •  AMQP 1.0, MQTT 3.1, STOMP (1.0-1.2) and OpenWire •  STOMP enables Ruby, JS, Perl, Python, PHP,ActionScript … •  Embedded and standalone deployment options •  The key component of JBoss A-MQ!
  • 6. 6   redhatRob Davies Messaging: The Basics
  • 7. 7   redhatRob Davies Message  Channels  and  RouIng   •  Message  Channels   •  Named  communica(on  between  interested  par(es   •  JMS  calls  them  ‘Des(na(ons’   •  Can  “tune-­‐in”  to  mul(ple  channels  using  wildcards   •  Can  fine-­‐tune  message  consump(on  with  selectors     •  Can  route  a  message  based  on  content  
  • 8. 8   redhatRob Davies Message  Channels    =  JMS   DesInaIons   Producer Broker Consumer Consumer Consumer Destinatio n WIDGET Destinatio n ORDER
  • 9. 9   redhatRob Davies Point-­‐to-­‐Point  Channel:  JMS  Queues   Producer Consumer Consumer Consumer Queue
  • 10. 10   redhatRob Davies Publish/Subscribe  Channel:  JMS  Topics   Producer Consumer Consumer Consumer Topic
  • 11. 11   redhatRob Davies Message  RouIng  :  Selectors     DestinationProducer Consumer color='blue' Consumer color='red'
  • 12. 12   redhatRob Davies Message  RouIng  :  DesInaIon   Wildcards   Topic: BAR.BEER Consumer topic:BAR.> Topic: BAR.WINE Producer
  • 13. 13   redhatRob Davies Messaging: Features every Message broker should have But some don’t…
  • 14. 14   redhatRob Davies Exclusive  Consumers   Producer Consumer Consumer Consumer Queue
  • 15. 15   redhatRob Davies Message  Groups   •  Like  Exclusive  Consumers  –  but  in  parallel   •  Guaranteed  ordering  of  related  messages  across  a   Queue   •  But  –  load  balancing  of  messages  across  mul(ple   consumers   •  All  messages  with  the  same  JMSXGroupID  go  to  the   same  consumer     •  How  you  group  messages  is  down  to  the  applica(on’s   producer   •  To  explicitly  close  a  group,  set  the  JMSXGroupSeq  to   -­‐1   15
  • 16. 16   redhatRob Davies JBoss  A-­‐MQ  –  Synchronous  sends   Message Broker Message Producer Consumer Consumer Consumer
  • 17. 17   redhatRob Davies JBoss  A-­‐MQ  –  Synchronous  sends   Set alwaysSyncSend on the ActiveMQConnectionFactory You can set: sendTimeout on the ActiveMQMessageProducer Synchronous send: JMS Client producer.send(session.createTextMessage("Hello"), new AsyncCallback() { public void onSuccess() {} public void onException(JMSException exception) { exception.printStackTrace(); } }); Performance Tip – use callbacks …
  • 18. 18   redhatRob Davies Deploying  JBoss  A-­‐MQ     •  AcIveMQ  Can  run  standalone  or  embedded   •  As  a  standalone,  or  part  of  a  highly  available    message   broker  cluster   •  Embedded  –  easy  to  use  an  en(re  broker  in  JUnit  tests  (no   need  to  Mock)   •  In  Tomcat,  deployed  as  a  war   •  In  JEE  Server  –  either  co-­‐locate  –  or  use  client  with  JCA   •  Ac(veMQ  distribu(ons  contain  a  rar  for  this  purpose   18
  • 19. 19   redhatRob Davies JBoss A-MQ: Message Storage
  • 20. 20   redhatRob Davies Message  Delivery  Mode     Messages  can  be  persisted  –  allowing  for  decoupled   applicaIons     For  Queues,  any  message  delivered  as  PERSISTENT   must  be  stored  on  long  term  storage  before  being   delivered  to  a  consumer     For  Topics,  a  message  delivered  as  PERSISTENT  will   only  be  stored    if  there  exists  a  durable  subscriber     NON-­‐PERSISTENT  messages  may  also  be  stored  on  disk   if  the  memory  limits  of  the  broker  have  been  reached   20
  • 21. 21   redhatRob Davies Message  stores  supported  by  JBoss  A-­‐MQ   ■  SQL  (JDBC)   ■  SQL  (JDBC)  with  journal   ■  AMQ  Message  Store   ■  Kaha   ■  KahaDB   ■  LevelDB   21 Slow but popular Don’t use (deprecated) The “current” default The “best yet”
  • 22. 22   redhatRob Davies LevelDB  Store  vs  KahaDB   •  Fewer  index  entries  per  message  than  KahaDB   •  Faster  recovery  when  a  broker  restarts   •  LevelDB  index  out-­‐perform  Btree  index  at  sequen(al  access  .   •  LevelDB  indexes  support  concurrent  read  access.   •  Pauseless  data  log  file  garbage  collec(on  cycles.   •  Fewer  IOPS  to  load  stored  messages.   •  It  exposes  it's  status  via  JMX  for  monitoring  
  • 23. 23   redhatRob Davies AcIveMQ:  LevelDB  Store  
  • 24. 24   redhatRob Davies JBoss A-MQ: Protocols
  • 25. 25   redhatRob Davies OpenWire       •  Advantages:   •  Fast  –  op(mized  for   Ac(veMQ   •  client  failover   •  automa(c  reconnect   •  Client  load  balancing   •  Flow  control   •  Many  advanced  features   25 Disadvantages: •  Not a recognized standard •  Only Java, C/C++/.Net http://activemq.apache.org/openwire.html
  • 26. 26   redhatRob Davies MQTT        h`p://mq`.org    Advantages:   •  M2M/”Internet  of  Things”   transport   •  Proposed  as  an  OASIS   standard   •  Extremely  light  weight   •  Growing  support  from   vendors  and  OS  products   •  WebSphereMQ   •  Ac(veMQ  +  Apollo   •  Mosquilo   •  RabbitMQ   26 Disadvantages: •  3.1 does not support Queues •  Advanced features not standard •  Flow control •  Failover etc.
  • 27. 27   redhatRob Davies AMQP  –  see  www.amqp.org    Advantages:   •  AMQP  1.0  OASIS  standard   •  Proposed  as  an  OASIS   standard   •  Commodi(zes  the  Broker   27 Disadvantages: •  One size doesn’t really fit all •  Currently no plans for IBM or Tibco to adopt it
  • 28. 28   redhatRob Davies STOMP  –        h`p://stomp.github.com    Advantages:   •  Easy  to  use  text  based   protocol   •  Can  use  telnet  as  a  client   •  Defacto  standard:   •  Ac(veMQ  +  Apollo   •  HornetQ   •  RabbitMQ   •  PocoMQ   •  StompServer   •  OpenMQ   •  Many  more  …   28 Disadvantages: •  Not as fast as binary formats
  • 29. 29   redhatRob Davies But  there’s  more:  WebSockets     STOMP  is  a  natural  wire  protocol  for  WebSockets     And  so  is  MQTT!   29 ActiveMQ Client (Browser) WebSocket Connector Stomp Converter ActiveMQ (Backend) TCP (WebSocket) HTTP(S) Request/Response
  • 30. 30   redhatRob Davies JBoss A-MQ: Enterprise Features – Failover …
  • 31. 31   redhatRob Davies High  Availability   ActiveMQ Cluster ActiveMQ Client Supported by both Java and C++ OpenWire clients
  • 32. 32   redhatRob Davies JBoss A-MQ: Enterprise Features – High Availability …
  • 33. 33   redhatRob Davies •  JDBC  Master/Slave   •  Shared  File  System  Master/Slave   •  Replicated  LevelDB  Master/Slave   Master Slave Configurations
  • 34. 34   redhatRob Davies Broker Slave JDBC  Master/Slave   Broker Master ActiveMQ Client Broker Slave Database
  • 35. 35   redhatRob Davies •  Extreme  reliability  –  but  not  as  fast   •  Recommended  if  already  using  an  enterprise  database   •  No  restric(on  on  number  of  slaves   •  Simple  configura(on   •  Configurable  lockKeepAlivePeriod   JDBC Master Slave
  • 36. 36   redhatRob Davies Broker Slave Shared  File  System  Master/Slave   Broker Master ActiveMQ Client Broker Slave File System Larry’sRemovals
  • 37. 37   redhatRob Davies •  Recommended  if  you  have  a  SAN,  or  DRDB   •  No  restric(on  on  number  of  slaves   •  Simple  configura(on   •  Ensure  file  locking  works  –  and  (mes  out  –  NFSv4  good!     Shared File System M/S
  • 38. 38   redhatRob Davies Local File System Local File SystemLocal File System Broker Slave Broker Master Broker Slave ZooKeeper Cluster Replicated LevelDB Master Slave
  • 39. 39   redhatRob Davies ZooKeeper Cluster Local File SystemLocal File SystemLocal File System Broker Slave Broker Master Client Broker Slave Replicated LevelDB Master Slave Broker Master
  • 40. 40   redhatRob Davies •  Requires  a  HA  ZooKeeper  Cluster   •  No  Single  Point  of  Failure   •  Dynamic  number  of  slaves   •  Simple  configura(on   •  Sync  or  Async  Replica(on   Replicated LevelDB Master Slave
  • 41. 41   redhatRob Davies •  Link  Brokers  together   •  Use  Store  and  Forward     •  Are  uni-­‐direc(onal  by  default   •  All  Des(na(ons  are  global     Network of Brokers
  • 42. 42   redhatRob Davies Apache  AcIveMQ  –  Broker  Topologies   Store and Forward ActiveMQ Local broker ActiveMQ Remote broker
  • 43. 43   redhatRob Davies Apache  AcIveMQ  –  Broker  Topologies   Bi-directional network ActiveMQ Local broker ActiveMQ Remote broker
  • 44. 44   redhatRob Davies <networkConnectors> <networkConnector name="backoffice" uri="static://(tcp://backoffice:61617)" duplex="true"> </networkConnector> </networkConnectors> Bi-directional Config
  • 45. 45   redhatRob Davies <networkConnectors> <networkConnector uri="static:(tcp://remote:61617) "/> <dynamicallyIncludedDestinations> <queue physicalName=”free.food.>"/> <queue physicalName=”free.beer.>"/> <topic physicalName=”cricket.scores.>"/> </dynamicallyIncludedDestinations> </networkConnectors> Reducing Crosstalk
  • 46. 46   redhatRob Davies Broker  Networks  (Store  and  Forward)  
  • 47. 47   redhatRob Davies Network  of  Brokers  :  Geographically   Dispersed  
  • 48. 48   redhatRob Davies Network  of  Brokers  :  Network  with  Master/Slave  
  • 49. 49   redhatRob Davies Scaling  Networks  of  Brokers   •  Brokers  share  rou(ng  informa(on  across  networks   •  All  des(na(ons  are  considered  Global   •  This  is  really  convenient   •  Though  it  starts  to  get  problema(c  with  1000’s  of   brokers   •  However  –  we  can  do  filtering  to  shape  the  traffic   across  networks     •  But  this  involves  a  lot  of  manual  configura(on           49
  • 50. 50   redhatRob Davies •  Brokers  share  rou(ng  informa(on  across  networks   •  All  des(na(ons  are  considered  Global   •  This  is  really  convenient   •  Though  it  starts  to  get  problema(c  with  1000’s  of  brokers   •  However  –  we  can  do  filtering  to  shape  the  traffic  across   networks     •  But  this  involves  a  lot  of  manual  configura(on           50 Time to talk about Apache Camel … Scaling  Networks  of  Brokers  
  • 51. 51   redhatRob Davies AcIveMQ  with  embedded  Camel   Service Consumer Consumer ActiveMQ Broker Flexible and is faster J
  • 52. 52   redhatRob Davies Scaling  Networks  –  use  Apache   Camel   •  Allows  for  non-­‐chaly  networks  to  be  established   •  Rou(ng  informa(on  can  be  externalized  to  the  broker   •  Successfully  used  in  produc(on  for  1000’s  of  brokers  today   52
  • 53. 53   redhatRob Davies More problems with Large Deployments
  • 54. 54   redhatRob Davies Problems  –  Deploying  and  maintenance     Main  problems   •  Installing  brokers  on  mul(ple  hosts   o  ssh,  untar,  set  directories  and  environment   •  Sesng  configura(on  manually  for  every  broker   o  copying  xml  config,  tweaking,  tes(ng   •  Upda(ng  configura(on  across  cluster   •  Upgrading  brokers   It’s a tedious and error-prone process
  • 55. 55   redhatRob Davies Problems  –  TradiIonal  best-­‐pracIce  Ips   •  Keep  XML  as  a  template  and  configure  node-­‐specific   details  through  proper(es   •  Keep  configura(on  in  SVC  system  (git,  svn,  …)   •  Keep  configura(on  separate  from  installa(on  for  easier   upgrades  
  • 56. 56   redhatRob Davies Problems  -­‐  Clients   •  Topology  is  very  “sta(c”   •  Clients  need  to  be  aware  of  topology   •  Clients  need  to  know  broker  loca(ons   •  Changes  are  not  easy  as  clients  need  to  be  updated   •  Adding  new  resources  (brokers)  requires  client  updates   •  Not  suitable  for  “cloud”  deployments   Fuse Fabric makes deployments more “elastic”
  • 57. 57   redhatRob Davies Fuse Fabric to the rescue!
  • 58. 58   redhatRob Davies Fuse  Fabric  –  Key  Features   Fuse  IDE     FMC   JBoss A-MQ Cluster Camel Endpoints JBoss Fuse Runtime Registry •  Supports  Hybrid  deployments   •  Distributed  Configura(on   •  Run(me  registry   •  Centralized  Management  
  • 59. 59   redhatRob Davies FuseMQ  features   •  mq-­‐base  profile   •  Defines  OSGi  features  and  bundles  to  be  installed   •  Defines  basic  broker  sesngs   •  mq-­‐create  command   •  Helper  command  for  crea(ng  brokers   •  Creates  an  new  profile  based  on  mq-­‐base   •  Op(onally  creates  new  containers   •  Assigns  the  profile  to  containers  (essen(ally  starts  the  broker)   FuseMQ = ActiveMQ deployed in Apache Karaf +
  • 60. 60   redhatRob Davies JBoss  A-­‐MQ   A small-footprint, high-performance, open source messaging platform
  • 61. 61   redhatRob Davies JBoss  A-­‐MQ  –  Value  ProposiIon   Value Proposition: –  Easier to configure, monitor, manage and maintain: Small IT footprint –  Multiple deployment options – centralized, distributed, embedded: Small IT footprint –  Proven and robust platform: Based on popular Apache ActiveMQ, Standards-based reliable messaging & High-performance –  Multiple connectivity options: Multi- standards and multi-platform support –  Real-time and reliable integration: Supports messaging paradigms: Pub/Sub, Point-2-Point, Store and forward New in 6.0: AMQP 1.0 support (Tech Preview) JBoss Developer Studio to include Fuse IDE JBoss Operations Network + Fabric Management Console Rebranding, repackaging
  • 62. 62   redhatRob Davies JBoss  A-­‐MQ  -­‐  Benefits    Breadth  of  connecIvity  –  cross-­‐language  client  support  and  mul(-­‐protocol  support  provides  wide   range  of  connec(vity  from  browser-­‐based  clients  to  mobile  devices   Proven  reliability  and  support  –  proven  track  record  of  suppor(ng  mission-­‐cri(cal  applica(ons,   and  backed  by  enterprise-­‐class  services  and  tools   Small  IT  footprint  –  high-­‐performance  and  reliable  messaging  with  small  footprint  and  minimal   maintenance   Multiple deployment options – Flexible configuration allows multiple deployment options No  license  fees  –  try  before  you  buy,  and  deploy  widely  without  incurring  exorbitant  costs  
  • 63. 63   redhatRob Davies So where is JBoss A-MQ used ?
  • 64. 64   redhatRob Davies Smart  Grids  …   6
  • 65. 65   redhatRob Davies Next  GeneraIon  Air  Traffic  Control  …   6 NextGen Applications FTI IP Backbone En Route Controllers Terminal Controllers Non-FAA Users (e.g., Airlines, DoD DHS, etc.) FAA Command Center SWIM Enterprise Infrastructure
  • 66. 66   redhatRob Davies Well  not  exactly  in  space  –  but  close     6
  • 67. 67   redhatRob Davies And  helping  run  the  biggest  science  experiment   –  ever!   6
  • 68. 68   redhatRob Davies Btw  -­‐  Why  is  IntegraIon  and  Messaging   Important  ?   Head Office Enterprises Need to know Everything!
  • 69. 69   redhatRob Davies There  are  more  things  to  Integrate  with!  
  • 70. 70   redhatRob Davies The  Internet  of  Things   •  Uniquely  iden(fiable  objects  and  their  virtual   representa(ons  in  an  internet-­‐like  structure   •  Originally  defined  by  Kevin  Ashton,  co-­‐founder  of  Auto-­‐ID   center  at  MIT   •  Today  its  meaning  has  evolved  to  encompass  a  world   where  physical  objects  are  integrated  into  the  informa(on   network,  and  where  physical  objects  par(cipate  in   business  processes.  
  • 71. 71   redhatRob Davies Machine  to  Machine   •  M2M  involves  collec(on  and  transmission  of  event  level   data  (used  to  be  called  telemetry)  from  intelligent  devices   •   Machines  can  interact  over  the  net  –  and/or  alached   networks  –  by  wired  and  wireless  networks   •  Payloads  are  typically  minimal  (temperature,  pressure,   loca(on,  metering  etc.)  
  • 72. 72   redhatRob Davies Internet  of  Things   Time   Connected  Devices  on  the   internet   2010  2000   2020   1  Billion   50  Billion   10    Billion   Ubiquitous   posiConing  –   locaCng  people  and   everyday  objects     RFID  tags  for   Inventory  control   Advanced  sensors,   Enterprises  fully   connected:  integraCon   of  everything   Geo-­‐located  devices   Microcontrollers   internet  enabled   Vending  machines,  lone   workers,  POS,  vehicles,   planes,  tolls,  power   systems,  transport,   telemedicine,    home   appliances,  power   systems,  etc.  
  • 73. 73   redhatRob Davies M2M  Examples     Smart  Energy  –   •   Smart  Grid  uses  smart  meters  for  monitoring  energy  uses  by  premises  for  billing,   substaCon  and  transmission  line  monitoring,  energy  producCon  (renewables)     Inventory  Control  –   •   smart  labels  and  RFID  tags  –  connected  scanners  pass  informaCon  upstream  to   servers  for  monitoring     In-­‐Vehicle  Systems   • Maintenance  informaCon,  global  posiConing,  ‘black-­‐box’  (speed  and  driving   habits),  wireless  payments  for  tolls/gas     Environmental  Monitoring   •   Weather  sta(ons  (temperature,  air-­‐pressure),  ocean  monitors,  earth  movements,   volcanic  ac(vity  crop  yields  etc.     Livestock  monitoring   • Cow  herds,  monitored  for  opCmum  Cme  for  milking,  sheep  herds  for  locaCon  
  • 74. 74   redhatRob Davies M2M  Topology   Gateway Hadoop Servers Analytics Gateway Internet Mesh Network Mobile wireless
  • 75. 75   redhatRob Davies Power  ConsumpIon!   •  Balery  life  for  mobiles,  power  consump(on  for  smart   devices  is  an  important  considera(on.   •  Facebook  use  MQTT  for  real-­‐(me  updates  –  efficiency  was   one  of  the  things  considered   •  MQTT  is  more  efficient  at  establishing  connec(ons,  sends   informa(on  more  reliably,  and  consumes  less  power  to   transmit  data  than  HTTP.  
  • 76. 76   redhatRob Davies Deluge  of  Data   •  Billions  of  devices  send  informa(on  will  require  storage   and  processing  of  terabytes  or  even  petabytes  of  data.   •  Big  Data  Inges(on:  Processing  of  vast  amounts  of  data   business  generates  to  make  good  decisions  is  only  half  the   problem.  Inges(ng  that  data  from  all  areas  of  the   enterprise  will  require  TBs  of  data  to  be  ingested  in  highly   reliable  and  scalable  way.    
  • 77. 77   redhatRob Davies Need  an  Eco  system  of  technologies     Dev •  Integra(on  is  gesng  harder   •  Tradi(onal  message  brokers  are  key   to  connect  “everything”   •  Mul(ple  protocols  need  to  be   supported   •  Camel  can  provide  integra(on  at   the  edges  –  and  the  data  center   •  Technologies  like  Fuse  Fabric   provide  centralized  provisioning   and  management   •  Need  to  mix  protocols,  brokers   and  “message  routers”  to  scale     FuseMQ Clusters Arrival Airport 1
  • 78. 78   redhatRob Davies Demo Time!
  • 79. 79   redhatRob Davies Messaging  through  the  Internet  of   Things   ActiveMQ AMQP/MQTT routers AMQP/MQTT routers AMQP/MQTT routers MQTT   MQTT-­‐S   AMQP   AMQP   AMQP   MQTT   MQTT   websocket s  
  • 80. 80   redhatRob Davies Simplified  demo   Java MQTT Client AMQP   MQTT   JBoss A-MQ MQTT/AMQP Gateway JBoss A-MQ AMQP/OpenWire Broker JMS OpenWire Client
  • 81. 81   redhatRob Davies What  is  Arduino  ?   •  Open  Source  Hardware  microcontroller   •  Cheap  and  easily  available.   •  Open  Source  Souware.   •  Widespread:  many  projects.   •  Extra  HW  (shields)  available  (e.g.  Ethernet  shield)  
  • 82. 82   redhatRob Davies USB 7-12 v 3 v GRD 5 v Analog Input Pins Digital Input/Output Pins Pins with ~ are PWM [Analog Output] GRD Transmitter/Receiver Serial Connection Microcontroller ATmega328 Operating Voltage 5V Input Voltage (recommended)7-12V Input Voltage (limits)6-20V Digital I/O Pins 14 (of which 6 provide PWM output) Analog Input Pins 6 DC Current per I/O Pin 40 mA DC Current for 3.3V Pin 50 mA
  • 83. 83   redhatRob Davies Arduino  Programming   •  3  types  of  memory  on  Arduino   •  Flash  memory  (program  space)  –  32  Kb   •  SRAM  –  used  by  sketches  –  2  Kb   •  EPROM  –  long  term  memory  –  1  Kb   •  Programming  language  based  on  Wiring:  C/C++  library   designed  to  make  input/output  easier.  Programs  are   called  sketches.   •  Arduino  has  a  simple  IDE,  available  on  Windows,  Linux   and  Mac  
  • 84. 84   redhatRob Davies Arduino  MQTT  to  WebSockets   Arduino AMQP   MQTT   JBoss A-MQ MQTT/AMQP Gateway JBoss A-MQ AMQP/WebSockets Broker HTML 5/WebSockets
  • 85. 85   redhatRob Davies Useful  Resources:     hlp://ac(vemq.apache.org     hlp://camel.apache.org       hlp://fuse.fusesource.org/fabric/docs/overview.html     hlp://fuse.fusesource.org/mq/docs/mq-­‐fabric.html     hlps://github.com/fusesource/fuseide     hlp://hawt.io     hlp://www.arduino.cc/   Messaging and Integration Developer tooling Management Configuration and provisioning Arduino
  • 86. 86   redhatRob Davies Any  Ques-ons  ?