Erlang开发电信网管项目实践.ppt

Erlang开发电信网管项目实践 Author EryLeeDate December2008Email ery lee Agenda AboutOpengossProjectRoadtoErlangTheArchitectureErlangHighlightsWhatWeGotWhatWeLostAboutErlangSyntaxThinkinginSoftware AboutOpengossProject What sOpengoss NextGenerationNetworkandBusinessManagementSystemOneuniformplatformbasedonLinux Erlang OTPandRORDifferentapplicationsforWIFI EPONandEnterpisenetworks OpengossProductFamily DMIT Monet Evabus Report RRDB WebTopo Platform Linux Unix MySQL Oracle LDAP Erlang OTP RubyandRails Base N A OpengossEnterprise OpengossEPON OpengossWLAN NMS N A N A N A WIMSS OSS Internet Enterprise EPON OSS WIFI OSS FutureofOpengoss TheNetworkManagementCloud RoadtoErlang PureJavaOriginally FirstVersion JavaandJEE SecondVersion Java OSGi Eclipse Model Driven Javacoulddoeverything but Java JSP JSF Struts Webwork Velocity Spring Hibernate iBatis EJB JDO JMS JNDI JDBC JAAS JTA RMI IIOP WebServices SOAP SOA SDO But couldJavadoanythingbest WeHadaBigIdeaOnce PlannedThirdVersion OSGI Component Plugin SOA SDO SCA Butwehavenomoneyandbigteam WearetiredofNEWconceptsandframeworks SDO SCA SOA ESB BPML SOBA EndlessWS Documents IntotheWild Wewanttobefaraway HelloStranger FallinlovewithREST RailsandErlang WhyErlang SimplicityPerformanceConcurrencyDistributionFaultTolerance TheArchitecture Architecture TroubleTicket3rdparty Automations SNMPProbe P SyslogProbe P API P Generic P Evabus SNMPMonitor M PingMonitor M TCPMonitor M OtherMonitor M WebPortal WebTop DMIT RRDB LDAP MIT RDMS Monet UI Data Biz Collect Design Layers PresentLayer AJAX RailsDataCenterLayer MySQL Oracle RRDB LDAPBusinessLayer DMIT DistributedMIT Evabus EventandAlarmBus Monet Distributednetworkmonitor DataCollectionLayer Probe Monitor Mediator DMIT LDAPandSyncrepl Evabus ConcurrentEventandAlarmProcessLine Monet Massivelydistributednetworkmonitoranddatacollection Errd RRDToolErlangport ErlangHighlights Master SlaveandPool Distributionandloadbalance MasterApplications SlaveApplications Samplecode pool handle cast add Dn Attrs State Node pool get node rpc call Node monet agent monitor Dn Attrs ets insert mon entry table Dn Node noreply State OTPBehaviors applicationsupervisorgen servergen eventgen fsmgen monitor Supervisortree gen server opengoss mysql module opengoss mysql behaviour gen server export insert 2 select 1 select 2 select 3 update 2 update 3 delete 2 gen server opengoss mysql cont opengoss mysql select wifi mobile units id mac ap dn Dn opengoss mysql update wifi mobile units last seen datetime Now and ap Dn Dn in id UpdatedIds opengoss mysql delete wifi mobile units and ap Dn Dn in id DeletedIds gen event mit event h handle event present Dn Entry State handle add entry Dn Entry ok State handle event add Dn Entry State handle add entry Dn Entry ok State handle event modify Dn Entry State handle modify entry Dn Entry ok State handle event delete Dn Entry State handle delete entry Dn ok State gen fsm eldap syncrepl module eldap syncrepl behaviour gen fsm include eldap hrl include ELDAPv3 hrl export init 1 connecting 2 wait bind response 2 wait syncrepl response 2 handle event 3 handle sync event 4 handle info 3 terminate 3 code change 4 close 0 Otherlibraries SNMPMochiwebErrdEldapMySQLdriverCron WhatWeGot Productivity SmallteamtodevelopaNMSproduct2Ajax Html 2Rails DB 1Erlang2daystocodingsyncreplprotocol Performance 1HP380 2CPUs 4Gmem 8Cores1Oracle 1Mysql 1OpenLdap 4Mongrel 1Master 4Slaves5minutesinterval10 measureitemsaverageCollect200Switches 1200Aps 8000Interfaces Concurrency 8000 collectprocesses80SNMPclient80PING30RRDTools4ErlangSNMPClient Scalability MassivelyDistributedDataCollectionScalefrom1000 to100 000 ApsTrytoresolveIObottleneckTrytopartitiondata Stability NeverstopmonitorengineFailureRecoverHotcodeloading Distribution TransparentdistributionNoefforttogetmaster slave Happiness Lesscode LessnoisesMoreHappiness Loneliness NoGirls WhatWeLost Java ComprehensivematuredlibrariesandframeworksTheJavacommunity Buzzword NoSOA SCA SDO ESBfinally AboutErlangSyntax Love FunctionProgramming PatternmatchListcomprehension Hate UglyIfStringSupportRecords ThinkinginSoftware FarawayfromSOA SOAPDied WS isdying AndthenSOA OOisoverevaluated TherevolutionisRDBMSandCLanguage It sjustData ITwasnamedas DataProcessing inenterpris