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Exploring XMPP

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    Notes on slide 1

    5 Favorites, 2 Groups & 1 Event

    Exploring XMPP - Presentation Transcript

    1. <exploring:xmpp/> Jack Moffitt
    2. Why XMPP?
    3. HTTP APIs are great
    4. HTTP polling sucks
    5. Real time is different
    6. XMPP is real time
    7. XMPP basics
    8. XMPP network
    9. XMPP addressing
    10. example.com
    11. jack@example.com
    12. jack@example.com/home
    13. jack@example.com/work
    14. jack@example.com/7a29d835f9c
    15. XMPP protocol
    16. XML
    17. XML streams
    18. XML stanzas
    19. <message/>
    20. <presence/>
    21. <iq/>
    22. <message/>
    23. <message from=’juliet@sapo.pt/home’ to=’romeo@sapo.pt’ type=’chat’> <body> Wherefore art thou, Romeo? </body> </message>
    24. <message from=’juliet@sapo.pt/home’ to=’romeo@sapo.pt’ type=’chat’> <body> Wherefore art thou, Romeo? </body> </message>
    25. <message from=’juliet@sapo.pt/home’ to=’romeo@sapo.pt’ type=’chat’> <body> Wherefore art thou, Romeo? </body> </message>
    26. <message from=’juliet@sapo.pt/home’ to=’romeo@sapo.pt’ type=’chat’> <body> Wherefore art thou, Romeo? </body> </message>
    27. <message from=’juliet@sapo.pt/home’ to=’romeo@sapo.pt’ type=’chat’> <body> Wherefore art thou, Romeo? </body> </message>
    28. <presence/>
    29. <presence> <show>away</show> <status>At Codebits</status> </presence>
    30. <presence type=’available’> <show>away</show> <status>At Codebits</status> </presence>
    31. <presence type=’available’> <show>away</show> <status>At Codebits</status> </presence>
    32. <presence type=’available’> <show>away</show> <status>At Codebits</status> </presence>
    33. <iq/>
    34. <iq to=’sapo.pt’ type=’get’ id=’disco:1’> <query xmlns=’disco#info’/> </iq>
    35. <iq to=’sapo.pt’ type=’get’ id=’disco:1’> <query xmlns=’disco#info’/> </iq>
    36. <iq to=’sapo.pt’ type=’get’ id=’disco:1’> <query xmlns=’disco#info’/> </iq>
    37. <iq to=’sapo.pt’ type=’get’ id=’disco:1’> <query xmlns=’disco#info’/> </iq>
    38. <iq to=’sapo.pt’ type=’get’ id=’disco:1’> <query xmlns=’disco#info’/> </iq>
    39. <iq to=’romeo@sapo.pt/home’ from=’sapo.pt’ type=’result’ id=’disco:1’> <query xmlns=’disco#info’> <identity category='server' type='im' name='ejabberd'/> <feature var='vcard-temp'/> </query> </iq>
    40. <iq to=’romeo@sapo.pt/home’ from=’sapo.pt’ type=’result’ id=’disco:1’> <query xmlns=’disco#info’> <identity category='server' type='im' name='ejabberd'/> <feature var='vcard-temp'/> </query> </iq>
    41. <iq to=’romeo@sapo.pt/home’ from=’sapo.pt’ type=’result’ id=’disco:1’> <query xmlns=’disco#info’> <identity category='server' type='im' name='ejabberd'/> <feature var='vcard-temp'/> </query> </iq>
    42. <iq to=’romeo@sapo.pt/home’ from=’sapo.pt’ type=’result’ id=’disco:1’> <query xmlns=’disco#info’> <identity category='server' type='im' name='ejabberd'/> <feature var='vcard-temp'/> </query> </iq>
    43. The application
    44. example
    45. contrived
    46. Server monitoring
    47. Goodbye SNMP
    48. XMPP APIs
    49. Features
    50. Collection hub
    51. Collectors are XMPP bots
    52. Controlled via client
    53. Presence
    54. Discovery
    55. Commands
    56. Notification
    57. No processing
    58. Presence
    59. Communicates status
    60. Subscribing
    61. <presence type=’subscribe’ to=’xmpp@mon.sapo.pt’/>
    62. <presence type=’subscribed’ from=’xmpp@mon...’ to=’client@mon...’/>
    63. Rosters
    64. <iq type=’get’ id=’roster1’> <query xmlns=’jabber:iq:roster’/> </iq>
    65. <iq type=’result’ id=’roster1’> <query xmlns=’jabber:iq:roster’> <item jid=’xmpp@mon...’ subscription=’to’/> </query> </iq>
    66. Initial presence
    67. <presence/>
    68. Starting up
    69. <presence from=’xmpp@mon...’/>
    70. Dead server
    71. <presence type=’unavailable’ from=’xmpp@mon...’/>
    72. Busy server
    73. <presence type=’available’> <show>away</show> <status> Overloaded. Can’t take more jobs. </status> </presence>
    74. Discovery
    75. Meta information
    76. Disco info
    77. <iq id=’disco1’ type=’get’ to=’xmpp@mon...’> <query xmlns=’.../disco#info’/> </iq>
    78. <iq ...> <query xmlns=’.../disco#info’> <identity name=’XMPP Monitor’ category=’monitor’ type=’server’/> </query> </iq>
    79. Statistics available
    80. Disco items
    81. <iq id=’disco2’ type=’get’ to=’xmpp@mon...’> <query xmlns=’.../disco#items’/> </iq>
    82. <iq ...> <query xmlns=’.../disco#items’> <item name=’CPU Load’ jid=’xmpp@mon...’ node=’cpu’/> ... </query> </iq>
    83. <iq ...> <query xmlns=’.../disco#items’> <item name=’CPU Load’ jid=’xmpp@mon...’ node=’cpu’/> ... </query> </iq>
    84. <iq ...> <query xmlns=’.../disco#items’> <item name=’CPU Load’ jid=’xmpp@mon...’ node=’cpu’/> ... </query> </iq>
    85. Gathering statistics
    86. Disco info again
    87. With a node
    88. <iq id=’disco3’ type=’get’ to=’xmpp@mon...’> <query xmlns=’.../disco#info’ node=’cpu’/> </iq>
    89. <iq ...> <query xmlns=’.../disco#info’ node=’cpu’> <statisic xmlns=’codebits’ name=’5-min’ value=’0.4’/> </query> </iq>
    90. <statistic/>
    91. Extended stanza
    92. Create your own
    93. Namespace
    94. <iq ...> <query xmlns=’.../disco#info’ node=’cpu’> <statisic xmlns=’codebits’ name=’5-min’ value=’0.4’/> </query> </iq>
    95. Commands
    96. Ad-hoc commands
    97. RPC
    98. Input and output
    99. Data forms
    100. <x xmlns='jabber:x:data' type='...'> <field type='hidden' var='FORM_TYPE'> <value>jabber:bot</value> </field> <field type='text-single' var='botname'> <value>Awesome Bot</value> </field> </x>
    101. <x xmlns='jabber:x:data' type='...'> <field type='hidden' var='FORM_TYPE'> <value>jabber:bot</value> </field> <field type='text-single' var='botname'> <value>Awesome Bot</value> </field> </x>
    102. <x xmlns='jabber:x:data' type='...'> <field type='hidden' var='FORM_TYPE'> <value>jabber:bot</value> </field> <field type='text-single' var='botname'> <value>Awesome Bot</value> </field> </x>
    103. <x xmlns='jabber:x:data' type='...'> <field type='hidden' var='FORM_TYPE'> <value>jabber:bot</value> </field> <field type='text-single' var='botname'> <value>Awesome Bot</value> </field> </x>
    104. <x xmlns='jabber:x:data' type='...'> <field type='hidden' var='FORM_TYPE'> <value>jabber:bot</value> </field> <field type='text-single' var='botname'> <value>Awesome Bot</value> </field> </x>
    105. Reboot command
    106. <iq ...> <command xmlns=’.../commands’ node=’reboot’ action=’execute’/> </iq>
    107. <iq ...> <command xmlns=’.../commands’ node=’reboot’ action=’execute’/> </iq>
    108. <iq ...> <command xmlns=’.../commands’ node=’reboot’ action=’execute’/> </iq>
    109. <iq ...> <command xmlns=’.../commands’ node=’reboot’ status=’completed’/> </iq>
    110. Stats reset
    111. Shell commands
    112. Notifications
    113. Important events
    114. Limits exceeded
    115. Publish subscribe
    116. Pubsub
    117. Nodes
    118. Node hierarchy
    119. Leaves
    120. Collections
    121. Bots publish
    122. Client subscribes
    123. PEP
    124. Personal eventing protocol
    125. Profile of pubsub
    126. Simple
    127. Presence
    128. Every JID is a pubsub node
    129. Subscriptions are automatic
    130. Publishing
    131. <iq ...> <pubsub xmlns=’.../pubsub’> <publish node=’codebits’> <item> <rebooted xmlns=’codebits’/> </item> </publish> </pubsub> </iq>
    132. <iq ...> <pubsub xmlns=’.../pubsub’> <publish node=’codebits’> <item> <rebooted xmlns=’codebits’/> </item> </publish> </pubsub> </iq>
    133. <iq ...> <pubsub xmlns=’.../pubsub’> <publish node=’codebits’> <item> <rebooted xmlns=’codebits’/> </item> </publish> </pubsub> </iq>
    134. <iq ...> <pubsub xmlns=’.../pubsub’> <publish node=’codebits’> <item> <rebooted xmlns=’codebits’/> </item> </publish> </pubsub> </iq>
    135. <iq ...> <pubsub xmlns=’.../pubsub’> <publish node=’codebits’> <item> <rebooted xmlns=’codebits’/> </item> </publish> </pubsub> </iq>
    136. Subscribing
    137. Automatic
    138. Entity capabilities
    139. Caps
    140. Caps extend presence
    141. <presence> <c xmlns=’.../caps’ node=’codebits’ hash=’sha-1’ ver=’...hash...’/> </presence>
    142. <presence> <c xmlns=’.../caps’ node=’codebits’ hash=’sha-1’ ver=’...hash...’/> </presence>
    143. <presence> <c xmlns=’.../caps’ node=’codebits’ hash=’sha-1’ ver=’...hash...’/> </presence>
    144. Interpreted via disco
    145. <feature var=’codebits’/> <feature var=’codebits+notify’/>
    146. Events
    147. <message ...> <event xmlns=’.../pubsub’> <items node=’codebits’> <item> <rebooted xmlns=’codebits’/> </item> </items> </event> </message>
    148. Just add code
    149. http://www.xmpp.org http://metajack.im jack@metajack.im

    + codebitscodebits, 12 months ago

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