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,WhatsOpengoss?,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:JavaandJEESecondVersion: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,ItsjustData,ITwasnamedasDataProcessinginenterprise.T