日終支付結算

osop_version: "1.0"
id: "payment-settlement"
name:"日終支付結算"
description:"批次交易彙整，經由清算、帳本更新到對帳的完整流程。"

nodes:
  - id: "eod_batch"
    type: "event"
    name: "日終批次處理"
    description: "市場收盤時排程觸發，啟動結算週期。"

  - id: "txn_aggregate"
    type: "db"
    name: "交易彙整"
    description: "依交易對手、幣別及結算日期分組交易。"
    timeout_sec: 120

  - id: "clearing_submit"
    type: "api"
    subtype: "rest"
    name: "提交至清算所"
    description: "將軋差後的部位提交至 ACH/SWIFT/FedWire 清算網路。"
    security:
      risk_level: "critical"
    retry_policy:
      max_attempts: 3
      backoff: "exponential"

  - id: "response_process"
    type: "system"
    name: "回應處理"
    description: "解析清算所回應，標記拒絕及例外情形。"

  - id: "ledger_update"
    type: "db"
    name: "帳本更新"
    description: "以複式記帳方式將已結算金額過帳至總帳。"
    security:
      risk_level: "high"

  - id: "reconciliation"
    type: "system"
    name: "對帳"
    description: "將內部記錄與清算確認書進行比對，標記差異。"

edges:
  - from: "eod_batch"
    to: "txn_aggregate"
    mode: "sequential"
  - from: "txn_aggregate"
    to: "clearing_submit"
    mode: "sequential"
  - from: "clearing_submit"
    to: "response_process"
    mode: "sequential"
  - from: "response_process"
    to: "ledger_update"
    mode: "conditional"
    when: "response.status == 'accepted'"
  - from: "ledger_update"
    to: "reconciliation"
    mode: "sequential"
  - from: "response_process"
    to: "clearing_submit"
    mode: "fallback"
    label: "Resubmit rejected transactions"