KaiOS OTA APN 方案

需求和实现逻辑

OMADM 机制根据节点信息修改对应的APN，因此代码也通过Node消息管控实现。

1. _listenOpApnSettings
2. opCheckIsInProgressAndSaveNodeValue
3. saveAndUpdateApnValue
   1. this.operatorVariantHandlers[simslot.index].applySettings(mcc, mnc/*, false*/, apnEnabledStateChange)
4. applySettings(mcc, mnc, updateAPN)
5. applyOperatorVariantSettings(result)
6. buildApnSettings(allApnList)
   1. 初始化APN数组 var apnSettings = [] 和tmpApnSettings
   2. 根据APN_TYPES.length长度遍历赋值tmpApnSettings，
   3. 再将数组拷贝给apnSettings 保存 apnSettings = this.convertApnSettings(tmpApnSettings); this.buildPreferredApnSettings(apnSettings);
7. buildPreferredApnSettings(apnSettings) 
8. navigator.b2g.engmodeManager.setDataProfileByType(JSON.stringify(apnSettings[index]), 1);

接口表

Interface	Module	Comment
_listenOpApnSettings(simslot)	operator_variant_manager.js
opCheckIsInProgressAndSaveNodeValue(node, value, simslot)	operator_variant_manager.js
saveAndUpdateApnValue(node, value, simslot)	operator_variant_manager.js
applySettings(mcc, mnc, updateAPN)	operator_variant_handler.js	updateAPN是OMADM对应的APN class 类型
applyOperatorVariantSettings(result)	operator_variant_handler.js
buildApnSettings(allApnList)	operator_variant_handler.js
buildPreferredApnSettings(apnSettings)	operator_variant_handler.js	此接口只会被调用一次，因此在manager里面循环传参updateAPN调用applySettings()执行卡的时候，不能下发全部类型的全部APN。（存疑）
setDataProfileByType	EngmodeManager.jsm	Manager通过发消息触发服务执行： 1.Services.cpmm.sendAsyncMessage("Engmode:setDataProfileByType", 2.内部收到消息在receiveMessage(aMessage)匹配case 执行 case "Engmode:setDataProfileByType:Return":     request = this.requestMsgHdl(msg); 3.
_setDataProfileByType	EngmodeService.jsm	在 buildPreferredApnSettings定制的类型会触发dataprofile下发MD，在engmode中实现。

相关工具模块

/gecko/koost/engmode/EngmodeService.jsm

在engmode实现同步APN到MD的接口

js module	Interface	Comment
EngmodeManager.jsm	setDataProfileByType(strApnSetting, type)	管理通过消息调起服务。
EngmodeService.jsm	_setDataProfileByType(networkType, profileId, apn, protocol, roamingProtocol, authType, user, password, type, maxConnsTime, maxConns, waitTime, enabled, inactivityTimer, callback)	定义服务