Covid19Radarのシーケンス図

Covid19Radar_Sequence.md

Covid19Radarのシーケンス図

ソースコードから書き起こしたシーケンス図です。間違っている可能性があります。

Covid19Radar_Sequence.puml

@startuml

participant ユーザー as user
participant アプリ as app
participant 接触確認プラグイン as plugin
participant OS as os
participant サーバー as server
participant DB as db

==== 起動時 ====

user   -> app: 起動
app    -> plugin: Init
plugin -> plugin: ScheduleFetchAsync
plugin  -> os
plugin <-- os
note over plugin: バックグラウンド処理開始\n後で説明

app     -> server: AppCenter

app     -> plugin: IsEnabledAsync
app    <-- plugin: bool
app     -> plugin: ScheduleFetchAsync
note over plugin
    trueだったらスケジュール
    なんで2度も？
end note

app -> app: ユーザーデータを確認
group ユーザーデータが存在しなければ
    app -> app: チュートリアル開始
end
group ユーザーデータが存在すれば
    app -> app: ホームページ表示
end

==== チュートリアル ====

user <-- app: チュートリアル1表示
user  -> app: 次へボタン押下
user <-- app: チュートリアル2表示
user  -> app: 次へボタン押下
user <-- app: チュートリアル3表示
user  -> app: 次へボタン押下
app   -> server: RegisterUserAsync\nPOST /register\ncontentは空
note over server
    ユーザー登録
    UserUuidを生成
    UserUuidをseedに乱数文字列を生成: Secret
    SecretをAES暗号化: ProtectSecret
end note
server -> db: ユーザーレコードを登録\nUserUuid\nProtectSecret
app <-- server: JSON応答\nSecret,UserUuid,JumpConsistentSeed

app   -> os: ユーザーデータを生成し永続化

user <-- app: プライバシーポリシー表示
note over app
    うーん
end note
user  -> app: 次へボタン押下
user <-- app: チュートリアル4表示
group 非同意ルート
    user -> app: 非同意
    app -> os: 接触通知は無効とユーザーデータに書き込んで保存
end
group 同意ルート
    user  -> app: 同意
    group iOS
        user <- app : Loading画面表示
        app  -> plugin: StartAsync\n接触確認APIを開始
        plugin -> os: iOS: SetExposureNotificationEnabledAsync(true)
        note over os
            TEKから10~20分ごとにRPIを生成してアドバタイズ
            OS側でずっと広告処理を行う
        end note
        group while
            app  -> app: 1秒待機
            app  -> plugin: StartAsync\n接触確認APIを開始
            plugin -> os: iOS: SetExposureNotificationEnabledAsync(true)
            note over app: 重要なことなので2度（略
            app  -> plugin: GetStatusAsync\n状態取得
            plugin  -> os: iOS: ExposureNotificationStatus
            plugin <-- os: Status\nenum: Active,BluetoothOff,Disabled,Restricted
            app <-- plugin: Status
            group Status == Active
                app -> os: 接触通知は有効とユーザーデータに書き込んで保存
            end
            group Status == BluetoothOff
                user <-- app: Bluetoothオフやで？
                app -> app: 同意前に戻る
            end
            group 2回リトライしてダメだったら
                user <-- app: Exposure Notificationを起動できませんでした\nOh! i18nされないハードコーディング!!
                user  -> app: OK
                app -> app: アプリを落とす
            end
        end
    end
    group Android
        note over app
            ほぼiOSと同等だが
            Bluetoothオフの場合に同意前に戻らない
        end note
        group 2回リトライしてダメだったら
            app -> os: 接触通知は無効とユーザーデータに書き込んで保存
            app -> app: アプリは落とさずにチュートリアル5に進む
        end
    end
end
user <-- app: チュートリアル5表示
user  -> app: 通知（あり/なし）を選択\nIsNotificationEnabled = bool
app -> os: 通知有無をユーザーデータに保存
user <-- app: チュートリアル6表示
user  -> app: ホーム/ヘルプページの表示を選択

==== バックグラウンド処理 iOS ====

app     -> plugin: Init
plugin  -> plugin: ScheduleFetchAsync
plugin  -> os: BGTaskScheduler.Shared.Register\nコールバック登録\nUpdateKeysFromServer
plugin  -> plugin: scheduleBgTask
plugin  -> os: ENManager.AuthorizationStatus取得
plugin <-- os: ENAuthorizationStatus
note over plugin: ENManager.AuthorizationStatus != ENAuthorizationStatus.Authorized\nならreturn
plugin  -> os: BGTaskScheduler.Shared.Submit
note over os: バックグラウンド処理を依頼
...
plugin <-  os: UpdateKeysFromServer\nサーバーのキー情報を更新しよう
app    <-  plugin: FetchExposureKeyBatchFilesFromServerAsync\nサーバーからキー情報の回収よろー
group foreach (var serverRegion in SupportedRegions)
    app  -> app: DownloadBatchAsync
    app  -> app: GetTemporaryExposureKeyList
    app  -> server: GetCdnAsync\nGET /{container}/{region}/list.json
    app <-- server: JSON応答\nTekList
    group foreach tekItem in tekList
        app  -> os: LastProcessTekTimestamp取得
        app <-- os: LastProcessTekTimestamp
        group LastProcessTekTimestampより新しいtekだったら
            app  -> server: GetTemporaryExposureKey\nGetCdnStreamAsync\nGET {tekItem.Url}
            app <-- server: uuid生成および名前{uuid}.zipで\nファイル保存
        end
        app  -> os: LastProcessTekTimestamp更新
    end
    app  -> plugin: submitBatches
    plugin -> plugin: PlatformDetectExposuresAsync
    plugin -> plugin: GetConfigurationAsync
    note over plugin: zip展開 -> .binファイルと.sigファイル
    plugin  -> os: iOS: DetectExposuresAsync
    note over os
        TEKからRPIを生成して突合
    end note
    note over os
        RPIの一致があればサマリ生成
    end note
    plugin <-- os: detectionSummary:\nDaysSinceLastExposure\nMatchedKeyCount\nriskScoreSumFullRange\nmaximumRiskScoreFullRange
    note over plugin: zip展開したファイルを削除
    app     <- plugin: ExposureDetectedAsync
    app     -> plugin: getExposureInfo(GetInfo)
    plugin  -> os: iOS: GetExposureInfoAsync
    plugin <-- os: Date\ntotalRiskScoreFullRange\nAttenuationValue\nTransmissionRiskLevel\nDuration
    app    <-- plugin: 同上
    app     -> os: ユーザーデータのExposureInformationにExposureSummaryを追加
    group IsNotificationEnabled == true
        user <-- app: 新型コロナウイルス陽性登録者との接触の可能性\n新型コロナウイルス陽性登録者と\n接触した可能性があります。詳細はこちら。
        user  -> app: アプリ起動\nバックグラウンド動作なので
    end

    app  -> app: zipファイル削除
end

== 感染確認 ==

user  -> app: ホームページより感染確認ボタンを押下
app   -> app: ユーザーデータのExposureInformationより\n感染情報を確認

group 感染情報が存在しない
    user <-- app: 陽性者との接触は確認されませんでした
end
group 感染情報が存在する
    user <-- app: 陽性者との接触確認
    note over app
        以下メッセージ？
        陽性者との接触一覧
        症状を入力して相談
        電話で症状を伝えて相談

        現在の症状などを、入力フォームまたはお電話にて、ご連絡ください。内容に応じて、帰国者・接触者外来等への受診を案内します。
        受診の際などに必要となる場合があるため、本画面のスクリーンショットの保存をお願いいたします。
    end note
end

== 陽性情報の登録 ==

user  -> app: ホームページより陽性情報の登録ボタンを押下
user <-- app: 陽性情報の登録ページを表示
note over app
    以下メッセージ？
    新型コロナウイルス感染症者等情報把握・管理支援システム（HER-SYS）から発行された処理番号を入力してください。
    過去14日間に本アプリであなたと接触した履歴のある人に通知が行きます。
    登録は匿名で行われ、氏名や連絡先など個人が特定される情報を登録する必要はありません。
    また、接触した場所の位置情報が記録や通知されることもありません。
end note
user  -> app: DiagnosisUidを入力\n処理番号
app -> os: ユーザーデータのPendingDiagnosisにDiagnosisUidを追加
app -> plugin: SubmitSelfDiagnosisAsync
plugin  -> plugin: GetSelfTemporaryExposureKeysAsync\nPlatformGetTemporaryExposureKeys
plugin  -> os: iOS: GetDiagnosisKeysAsync
plugin <-- os: TEK[]\nKeyData\nRollingStartNumber\RollingPeriod\nTransmissionRiskLevel
app <- plugin: UploadSelfExposureKeysToServerAsync(selfKeys)
app  -> app: DiagnosisUidとTEK[]を関連付けして\nSubmissionを作成
app  -> server: PutSelfExposureKeysAsync\nPUT /diagnosis\nSelfDiagnosisSubmission
note over server
    SubmissionNumber: DiagnosisUid
    AppPackageName: AppInfo.PackageName
    UserUuid
    Platform
    Regions: AppSettings.Instance.SupportedRegions
    Keys: keys
    VerificationPayload: DiagnosisUid
end note
note over server
    diagnosisの正しさを検証
    UserUuidとAuthorizationヘッダーを検証
      AuthorizationヘッダーはUserUuidから生成されたもの
end note
server  -> db: IDでユーザーを問い合わせ
server <-- db: 該当ユーザー
note over server
    AuthorizationヘッダーとProtectSecretが等しいことを検証
end note
server  -> db: Diagnosisテーブルにdiagnosisを追加\ntimestamp\nUserUuid\nkeys
server <-- db
server  -> db: Tekテーブルにkeyを追加
server <-- db

app <-- server: JSON応答

user <-- app: 診断結果の提出\n完了しました
user  -> app: OK

user <-- app: ホームページに戻る

== バッチ - 追加 ==

server  -> db: Tekテーブルから14日前までのTEKかつexport前を取得
server <-- db: TEK[]
note over server
TEKをGroupBy
  GetRollingStartUnixTimeSecondsおよび
  GetRollingPeriodSeconds
Regionsごとに処理
TEKの順番を並べ替え
  Security considerations: Random Order TemporaryExposureKey
zipの作成
  binとsigのJSON
  bin: TEKのリスト
    Keys
    BatchNum
    BatchSize
    Region
    StartTimestamp
    EndTimestamp
    SignatureInfos
  sig: signature
    binの署名
sigの実装がおそらく秘密情報?
end note
server  -> db: TEKのExport情報を追加

== バッチ - 削除 ==

server  -> db: GetOutOfTimeKeysAsync
server <-- db: 14日前のTEKを応答
server  -> server: zipファイルを削除
server  -> db: TEKのExport情報を更新\n削除済みとして
server  -> db: TEKリストから該当TEKを削除

@enduml

Covid19Radar_Sequence.svg

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stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="150" x="343" y="1813.4951">重要なことなので2度（略</text><polygon fill="#A80036" points="729,1865.0547,739,1869.0547,729,1873.0547,733,1869.0547" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="425" x2="735" y1="1869.0547" y2="1869.0547"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="96" x="432" y="1847.8467">GetStatusAsync</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="52" x="432" y="1864.1982">状態取得</text><polygon fill="#A80036" points="1036,1895.4063,1046,1899.4063,1036,1903.4063,1040,1899.4063" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="741" x2="1042" y1="1899.4063" y2="1899.4063"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="187" x="748" y="1894.5498">iOS: ExposureNotificationStatus</text><polygon fill="#A80036" points="752,1942.1094,742,1946.1094,752,1950.1094,748,1946.1094" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0; stroke-dasharray: 2.0,2.0;" x1="746" x2="1047" y1="1946.1094" y2="1946.1094"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="38" x="758" y="1924.9014">Status</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="267" x="758" y="1941.2529">enum: Active,BluetoothOff,Disabled,Restricted</text><polygon fill="#A80036" points="436,1972.4609,426,1976.4609,436,1980.4609,432,1976.4609" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0; stroke-dasharray: 2.0,2.0;" x1="430" x2="740" y1="1976.4609" y2="1976.4609"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="38" x="442" y="1971.6045">Status</text><path d="M385,1991.4609 L532,1991.4609 L532,1999.4609 L522,2009.4609 L385,2009.4609 L385,1991.4609 " fill="#EEEEEE" style="stroke: #000000; 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stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0; stroke-dasharray: 2.0,2.0;" x1="120" x2="424" y1="2094.8672" y2="2094.8672"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="120" x="132" y="2090.0107">Bluetoothオフやで？</text><line style="stroke: #A80036; stroke-width: 1.0;" x1="425" x2="467" y1="2125.2188" y2="2125.2188"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="467" x2="467" y1="2125.2188" y2="2138.2188"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="426" x2="467" y1="2138.2188" y2="2138.2188"/><polygon fill="#A80036" points="436,2134.2188,426,2138.2188,436,2142.2188,432,2138.2188" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="78" x="432" y="2120.3623">同意前に戻る</text><path d="M68,2160.2188 L302,2160.2188 L302,2168.2188 L292,2178.2188 L68,2178.2188 L68,2160.2188 " fill="#EEEEEE" style="stroke: #000000; 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stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="115" x2="419" y1="2247.625" y2="2247.625"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="19" x="122" y="2242.7686">OK</text><line style="stroke: #A80036; stroke-width: 1.0;" x1="425" x2="467" y1="2277.9766" y2="2277.9766"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="467" x2="467" y1="2277.9766" y2="2290.9766"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="426" x2="467" y1="2290.9766" y2="2290.9766"/><polygon fill="#A80036" points="436,2286.9766,426,2290.9766,436,2294.9766,432,2290.9766" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="91" x="432" y="2273.1201">アプリを落とす</text><path d="M284,2326.9766 L379,2326.9766 L379,2334.9766 L369,2344.9766 L284,2344.9766 L284,2326.9766 " fill="#EEEEEE" style="stroke: #000000; stroke-width: 1.0;"/><rect fill="none" height="181.1094" style="stroke: #000000; stroke-width: 2.0;" width="803" x="284" y="2326.9766"/><text fill="#000000" font-family="sans-serif" font-size="13" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="50" x="299" y="2341.4717">Android</text><path d="M294,2350.3281 L294,2392.3281 L552,2392.3281 L552,2360.3281 L542,2350.3281 L294,2350.3281 " fill="#FBFB77" filter="url(#f1lc1h5im1m9ig)" style="stroke: #A80036; stroke-width: 1.0;"/><path d="M542,2350.3281 L542,2360.3281 L552,2360.3281 L542,2350.3281 " fill="#FBFB77" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="113" x="300" y="2368.8232">ほぼiOSと同等だが</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="237" x="300" y="2385.1748">Bluetoothオフの場合に同意前に戻らない</text><path d="M385,2409.0313 L619,2409.0313 L619,2417.0313 L609,2427.0313 L385,2427.0313 L385,2409.0313 " fill="#EEEEEE" style="stroke: #000000; stroke-width: 1.0;"/><rect fill="none" height="92.0547" style="stroke: #000000; 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stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0; stroke-dasharray: 2.0,2.0;" x1="1119" x2="1454" y1="6263.8984" y2="6263.8984"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="33" x="1131" y="6259.042">TEK[]</text><path d="M912,6276.8984 L912,6596.8984 L1312,6596.8984 L1312,6286.8984 L1302,6276.8984 L912,6276.8984 " fill="#FBFB77" filter="url(#f1lc1h5im1m9ig)" style="stroke: #A80036; stroke-width: 1.0;"/><path d="M1302,6276.8984 L1302,6286.8984 L1312,6286.8984 L1302,6276.8984 " fill="#FBFB77" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="89" x="918" y="6295.3936">TEKをGroupBy</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="232" x="926" y="6311.7451">GetRollingStartUnixTimeSecondsおよび</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="148" x="926" y="6328.0967">GetRollingPeriodSeconds</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="112" x="918" y="6344.4482">Regionsごとに処理</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="129" x="918" y="6360.7998">TEKの順番を並べ替え</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="371" x="926" y="6377.1514">Security considerations: Random Order TemporaryExposureKey</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="56" x="918" y="6393.5029">zipの作成</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="94" x="926" y="6409.8545">binとsigのJSON</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="102" x="926" y="6426.2061">bin: TEKのリスト</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="30" x="934" y="6442.5576">Keys</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="61" x="934" y="6458.9092">BatchNum</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="60" x="934" y="6475.2607">BatchSize</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="40" x="934" y="6491.6123">Region</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="92" x="934" y="6507.9639">StartTimestamp</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="87" x="934" y="6524.3154">EndTimestamp</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="82" x="934" y="6540.667">SignatureInfos</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="78" x="926" y="6557.0186">sig: signature</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="56" x="934" y="6573.3701">binの署名</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="180" x="918" y="6589.7217">sigの実装がおそらく秘密情報?</text><polygon fill="#A80036" points="1443,6624.9297,1453,6628.9297,1443,6632.9297,1447,6628.9297" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="1114" x2="1449" y1="6628.9297" y2="6628.9297"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="141" x="1121" y="6624.0732">TEKのExport情報を追加</text><rect fill="#EEEEEE" filter="url(#f1lc1h5im1m9ig)" height="3" style="stroke: #EEEEEE; stroke-width: 1.0;" width="1475.5" x="3" y="6658.1055"/><line style="stroke: #000000; stroke-width: 1.0;" x1="3" x2="1478.5" y1="6658.1055" y2="6658.1055"/><line style="stroke: #000000; stroke-width: 1.0;" x1="3" x2="1478.5" y1="6661.1055" y2="6661.1055"/><rect fill="#EEEEEE" filter="url(#f1lc1h5im1m9ig)" height="24.3516" style="stroke: #000000; stroke-width: 2.0;" width="100" x="690.75" y="6646.9297"/><text fill="#000000" font-family="sans-serif" font-size="13" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="82" x="696.75" y="6664.4248">バッチ - 削除</text><polygon fill="#A80036" points="1443,6699.6328,1453,6703.6328,1443,6707.6328,1447,6703.6328" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="1114" x2="1449" y1="6703.6328" y2="6703.6328"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="150" x="1121" y="6698.7764">GetOutOfTimeKeysAsync</text><polygon fill="#A80036" points="1125,6729.9844,1115,6733.9844,1125,6737.9844,1121,6733.9844" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0; stroke-dasharray: 2.0,2.0;" x1="1119" x2="1454" y1="6733.9844" y2="6733.9844"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="117" x="1131" y="6729.1279">14日前のTEKを応答</text><line style="stroke: #A80036; stroke-width: 1.0;" x1="1114" x2="1156" y1="6764.3359" y2="6764.3359"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="1156" x2="1156" y1="6764.3359" y2="6777.3359"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="1115" x2="1156" y1="6777.3359" y2="6777.3359"/><polygon fill="#A80036" points="1125,6773.3359,1115,6777.3359,1125,6781.3359,1121,6777.3359" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="108" x="1121" y="6759.4795">zipファイルを削除</text><polygon fill="#A80036" points="1443,6820.0391,1453,6824.0391,1443,6828.0391,1447,6824.0391" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="1114" x2="1449" y1="6824.0391" y2="6824.0391"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="141" x="1121" y="6802.8311">TEKのExport情報を更新</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="91" x="1121" y="6819.1826">削除済みとして</text><polygon fill="#A80036" points="1443,6850.3906,1453,6854.3906,1443,6858.3906,1447,6854.3906" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="1114" x2="1449" y1="6854.3906" y2="6854.3906"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="180" x="1121" y="6849.5342">TEKリストから該当TEKを削除</text><!--MD5=[a3ab28e5f4767293ef4b922a903b1035]
@startuml

participant ユーザー as user
participant アプリ as app
participant 接触確認プラグイン as plugin
participant OS as os
participant サーバー as server
participant DB as db

==== 起動時 ====

user   -> app: 起動
app    -> plugin: Init
plugin -> plugin: ScheduleFetchAsync
plugin  -> os
plugin <- - os
note over plugin: バックグラウンド処理開始\n後で説明

app     -> server: AppCenter

app     -> plugin: IsEnabledAsync
app    <- - plugin: bool
app     -> plugin: ScheduleFetchAsync
note over plugin
    trueだったらスケジュール
    なんで2度も？
end note

app -> app: ユーザーデータを確認
group ユーザーデータが存在しなければ
    app -> app: チュートリアル開始
end
group ユーザーデータが存在すれば
    app -> app: ホームページ表示
end

==== チュートリアル ====

user <- - app: チュートリアル1表示
user  -> app: 次へボタン押下
user <- - app: チュートリアル2表示
user  -> app: 次へボタン押下
user <- - app: チュートリアル3表示
user  -> app: 次へボタン押下
app   -> server: RegisterUserAsync\nPOST /register\ncontentは空
note over server
    ユーザー登録
    UserUuidを生成
    UserUuidをseedに乱数文字列を生成: Secret
    SecretをAES暗号化: ProtectSecret
end note
server -> db: ユーザーレコードを登録\nUserUuid\nProtectSecret
app <- - server: JSON応答\nSecret,UserUuid,JumpConsistentSeed

app   -> os: ユーザーデータを生成し永続化

user <- - app: プライバシーポリシー表示
note over app
    うーん
end note
user  -> app: 次へボタン押下
user <- - app: チュートリアル4表示
group 非同意ルート
    user -> app: 非同意
    app -> os: 接触通知は無効とユーザーデータに書き込んで保存
end
group 同意ルート
    user  -> app: 同意
    group iOS
        user <- app : Loading画面表示
        app  -> plugin: StartAsync\n接触確認APIを開始
        plugin -> os: iOS: SetExposureNotificationEnabledAsync(true)
        note over os
            TEKから10~20分ごとにRPIを生成してアドバタイズ
            OS側でずっと広告処理を行う
        end note
        group while
            app  -> app: 1秒待機
            app  -> plugin: StartAsync\n接触確認APIを開始
            plugin -> os: iOS: SetExposureNotificationEnabledAsync(true)
            note over app: 重要なことなので2度（略
            app  -> plugin: GetStatusAsync\n状態取得
            plugin  -> os: iOS: ExposureNotificationStatus
            plugin <- - os: Status\nenum: Active,BluetoothOff,Disabled,Restricted
            app <- - plugin: Status
            group Status == Active
                app -> os: 接触通知は有効とユーザーデータに書き込んで保存
            end
            group Status == BluetoothOff
                user <- - app: Bluetoothオフやで？
                app -> app: 同意前に戻る
            end
            group 2回リトライしてダメだったら
                user <- - app: Exposure Notificationを起動できませんでした\nOh! i18nされないハードコーディング!!
                user  -> app: OK
                app -> app: アプリを落とす
            end
        end
    end
    group Android
        note over app
            ほぼiOSと同等だが
            Bluetoothオフの場合に同意前に戻らない
        end note
        group 2回リトライしてダメだったら
            app -> os: 接触通知は無効とユーザーデータに書き込んで保存
            app -> app: アプリは落とさずにチュートリアル5に進む
        end
    end
end
user <- - app: チュートリアル5表示
user  -> app: 通知（あり/なし）を選択\nIsNotificationEnabled = bool
app -> os: 通知有無をユーザーデータに保存
user <- - app: チュートリアル6表示
user  -> app: ホーム/ヘルプページの表示を選択

==== バックグラウンド処理 iOS ====

app     -> plugin: Init
plugin  -> plugin: ScheduleFetchAsync
plugin  -> os: BGTaskScheduler.Shared.Register\nコールバック登録\nUpdateKeysFromServer
plugin  -> plugin: scheduleBgTask
plugin  -> os: ENManager.AuthorizationStatus取得
plugin <- - os: ENAuthorizationStatus
note over plugin: ENManager.AuthorizationStatus != ENAuthorizationStatus.Authorized\nならreturn
plugin  -> os: BGTaskScheduler.Shared.Submit
note over os: バックグラウンド処理を依頼
...
plugin <-  os: UpdateKeysFromServer\nサーバーのキー情報を更新しよう
app    <-  plugin: FetchExposureKeyBatchFilesFromServerAsync\nサーバーからキー情報の回収よろー
group foreach (var serverRegion in SupportedRegions)
    app  -> app: DownloadBatchAsync
    app  -> app: GetTemporaryExposureKeyList
    app  -> server: GetCdnAsync\nGET /{container}/{region}/list.json
    app <- - server: JSON応答\nTekList
    group foreach tekItem in tekList
        app  -> os: LastProcessTekTimestamp取得
        app <- - os: LastProcessTekTimestamp
        group LastProcessTekTimestampより新しいtekだったら
            app  -> server: GetTemporaryExposureKey\nGetCdnStreamAsync\nGET {tekItem.Url}
            app <- - server: uuid生成および名前{uuid}.zipで\nファイル保存
        end
        app  -> os: LastProcessTekTimestamp更新
    end
    app  -> plugin: submitBatches
    plugin -> plugin: PlatformDetectExposuresAsync
    plugin -> plugin: GetConfigurationAsync
    note over plugin: zip展開 -> .binファイルと.sigファイル
    plugin  -> os: iOS: DetectExposuresAsync
    note over os
        TEKからRPIを生成して突合
    end note
    note over os
        RPIの一致があればサマリ生成
    end note
    plugin <- - os: detectionSummary:\nDaysSinceLastExposure\nMatchedKeyCount\nriskScoreSumFullRange\nmaximumRiskScoreFullRange
    note over plugin: zip展開したファイルを削除
    app     <- plugin: ExposureDetectedAsync
    app     -> plugin: getExposureInfo(GetInfo)
    plugin  -> os: iOS: GetExposureInfoAsync
    plugin <- - os: Date\ntotalRiskScoreFullRange\nAttenuationValue\nTransmissionRiskLevel\nDuration
    app    <- - plugin: 同上
    app     -> os: ユーザーデータのExposureInformationにExposureSummaryを追加
    group IsNotificationEnabled == true
        user <- - app: 新型コロナウイルス陽性登録者との接触の可能性\n新型コロナウイルス陽性登録者と\n接触した可能性があります。詳細はこちら。
        user  -> app: アプリ起動\nバックグラウンド動作なので
    end

    app  -> app: zipファイル削除
end

== 感染確認 ==

user  -> app: ホームページより感染確認ボタンを押下
app   -> app: ユーザーデータのExposureInformationより\n感染情報を確認

group 感染情報が存在しない
    user <- - app: 陽性者との接触は確認されませんでした
end
group 感染情報が存在する
    user <- - app: 陽性者との接触確認
    note over app
        以下メッセージ？
        陽性者との接触一覧
        症状を入力して相談
        電話で症状を伝えて相談

        現在の症状などを、入力フォームまたはお電話にて、ご連絡ください。内容に応じて、帰国者・接触者外来等への受診を案内します。
        受診の際などに必要となる場合があるため、本画面のスクリーンショットの保存をお願いいたします。
    end note
end

== 陽性情報の登録 ==

user  -> app: ホームページより陽性情報の登録ボタンを押下
user <- - app: 陽性情報の登録ページを表示
note over app
    以下メッセージ？
    新型コロナウイルス感染症者等情報把握・管理支援システム（HER-SYS）から発行された処理番号を入力してください。
    過去14日間に本アプリであなたと接触した履歴のある人に通知が行きます。
    登録は匿名で行われ、氏名や連絡先など個人が特定される情報を登録する必要はありません。
    また、接触した場所の位置情報が記録や通知されることもありません。
end note
user  -> app: DiagnosisUidを入力\n処理番号
app -> os: ユーザーデータのPendingDiagnosisにDiagnosisUidを追加
app -> plugin: SubmitSelfDiagnosisAsync
plugin  -> plugin: GetSelfTemporaryExposureKeysAsync\nPlatformGetTemporaryExposureKeys
plugin  -> os: iOS: GetDiagnosisKeysAsync
plugin <- - os: TEK[]\nKeyData\nRollingStartNumber\RollingPeriod\nTransmissionRiskLevel
app <- plugin: UploadSelfExposureKeysToServerAsync(selfKeys)
app  -> app: DiagnosisUidとTEK[]を関連付けして\nSubmissionを作成
app  -> server: PutSelfExposureKeysAsync\nPUT /diagnosis\nSelfDiagnosisSubmission
note over server
    SubmissionNumber: DiagnosisUid
    AppPackageName: AppInfo.PackageName
    UserUuid
    Platform
    Regions: AppSettings.Instance.SupportedRegions
    Keys: keys
    VerificationPayload: DiagnosisUid
end note
note over server
    diagnosisの正しさを検証
    UserUuidとAuthorizationヘッダーを検証
      AuthorizationヘッダーはUserUuidから生成されたもの
end note
server  -> db: IDでユーザーを問い合わせ
server <- - db: 該当ユーザー
note over server
    AuthorizationヘッダーとProtectSecretが等しいことを検証
end note
server  -> db: Diagnosisテーブルにdiagnosisを追加\ntimestamp\nUserUuid\nkeys
server <- - db
server  -> db: Tekテーブルにkeyを追加
server <- - db

app <- - server: JSON応答

user <- - app: 診断結果の提出\n完了しました
user  -> app: OK

user <- - app: ホームページに戻る

== バッチ - 追加 ==

server  -> db: Tekテーブルから14日前までのTEKかつexport前を取得
server <- - db: TEK[]
note over server
TEKをGroupBy
  GetRollingStartUnixTimeSecondsおよび
  GetRollingPeriodSeconds
Regionsごとに処理
TEKの順番を並べ替え
  Security considerations: Random Order TemporaryExposureKey
zipの作成
  binとsigのJSON
  bin: TEKのリスト
    Keys
    BatchNum
    BatchSize
    Region
    StartTimestamp
    EndTimestamp
    SignatureInfos
  sig: signature
    binの署名
sigの実装がおそらく秘密情報?
end note
server  -> db: TEKのExport情報を追加

== バッチ - 削除 ==

server  -> db: GetOutOfTimeKeysAsync
server <- - db: 14日前のTEKを応答
server  -> server: zipファイルを削除
server  -> db: TEKのExport情報を更新\n削除済みとして
server  -> db: TEKリストから該当TEKを削除

@enduml

PlantUML version 1.2020.10(Sun May 17 18:35:57 JST 2020)
(GPL source distribution)
Java Runtime: Java(TM) SE Runtime Environment
JVM: Java HotSpot(TM) Client VM
Java Version: 1.8.0_231-b11
Operating System: Windows 10
Default Encoding: MS932
Language: ja
Country: JP
--></g></svg>