AUM是App Usage Metrics的縮寫，用于統計FFOS中一些應用的使用情況，并且在用戶允許的情況下(Settings中設置)，將統計信息上報Telemetry Server。

　　

1. AUM會監控FFOS中的幾種應用。

• ? Apps pre-installed with the phone (certified, or using a gaia origin)
• ? Apps installed from the marketplace

2. Telemetry Server Path

　　http://{host}:{port}/{deviceID}/{reason}/{appName}/{appVersion}/{appUpdateChannel}/{appBuildID}

3. AUM消息格式

　　以下是講flame手機中的AUM功能打開，添加log打印出來的消息格式。

{"ver":1,"info":{"start":1437968681114,"apps":{},"searches":{},"stop":1437968928832,"deviceID":"7a0f9f11-c8de-421d-939b-878b7e89915e","locale":"en-US","screen":{"width":320,"height":569,"devicePixelRatio":1.5},"deviceinfo":{"developer.menu.enabled":true,"deviceinfo.hardware":"qcom","deviceinfo.os":"2.5.0.0-prerelease","deviceinfo.product_model":"flame","deviceinfo.software":"Boot2Gecko 2.5.0.0-prerelease"},"simInfo":{"network":null,"icc":null},"reason":"appusage","appName":"FirefoxOS","appUpdateChannel":"nightly","appBuildID":"20150723141330","appVersion":"42.0a1"} }

?　　info->apps字段是關于per-app的信息，參考代碼，其消息格式是:

{"per-app-manifestURL-1":{"yyyymmdd":{"usageTime":0,"invocations":0,"installs":0,"uninstalls":0,"activities":{}}},"per-app-manifestURL-2":{"yyyymmdd":{"usageTime":0,"invocations":0,"installs":0,"uninstalls":0,"activities":{}}} }

　　info->searches字段是關于per-search的信息，參考代碼，其消息格式是:

{"per-app-provider-1":{"yyyymmdd":{"count":0}},"per-app-provider-2":{"yyyymmdd":{"count":0}} }

?4. AUM upload policy

　　FFOS中預設的是2 weeks upload。

?5. code分析

　　代碼比較簡單，以后有時間再貼出詳細分析(代碼位置:gaia/apps/system/js/app_usage_metrics.js)。

?

轉載于:https://www.cnblogs.com/code-4-fun/p/4680274.html

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