Print Scanner

2026-01-06 | 📑 0 words | ⏱ 0 mins | 🧾 History | ✍ Tom D'Roza | 🔑 Ross Buggins

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Known Issues / Todo

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Events Consumed

• ItemDequeued - queue-item-dequeued - uk.nhs.notify.digital.letters.queue.item.dequeued.v1
  • Produced By: code: Dequeuer

Events Produced

• FileSafe - file-safe - uk.nhs.notify.digital.letters.print.file.safe.v1
  • Consumed By: code: Print Analyser
• FileQuarantined - file-quarantined - uk.nhs.notify.digital.letters.print.file.quarantined.v1

Diagrams

c4code-file-scanner

C4:

Link to this diagram directly: /nhs-notify-digital-letters/diagrams/c4code-file-scanner.html

architecture-beta
    group fileScanner(cloud)[FileScanner]
    service itemDequeued(aws:res-amazon-eventbridge-event)[ItemDequeued Event]
    service scannerQueue(logos:aws-sqs)[Scanner Queue] in fileScanner
    service scannerLambda(logos:aws-lambda)[File Scanner] in fileScanner
    service moveQueue(logos:aws-sqs)[MoveFiles Queue] in fileScanner
    service moveLambda(logos:aws-lambda)[Move Scanned Files] in fileScanner
    service docRefBucket(logos:aws-s3)[DocumentReference] in fileScanner
    service unscannedBucket(logos:aws-s3)[UnscannedFiles] in fileScanner
    service quarantineBucket(logos:aws-s3)[QuarantinedFiles] in fileScanner
    service safeBucket(logos:aws-s3)[SafeFiles] in fileScanner
    service guardDuty(aws:arch-amazon-guardduty)[GuardDuty] in fileScanner
    service scanComplete(aws:res-amazon-eventbridge-event)[ScanResult Event]
    service safeFile(aws:res-amazon-eventbridge-event)[FileSafe Event]
    service quarantinedFile(aws:res-amazon-eventbridge-event)[FileQuarantined Event]
    junction j1 in fileScanner
    junction j2 in fileScanner
    junction j3 in fileScanner
    junction j4 in fileScanner
    junction j5 in fileScanner
    junction j6 in fileScanner
    junction j7 in fileScanner
    junction j8 in fileScanner
    junction j9 in fileScanner

    itemDequeued:R --> L:scannerQueue
    docRefBucket:B --> T:scannerLambda
    scannerQueue:R --> L:scannerLambda
    scannerLambda:B --> T:unscannedBucket
    unscannedBucket:R --> L:guardDuty
    j1:T -- B:unscannedBucket
    guardDuty:R --> L:scanComplete
    scanComplete:R --> L:moveQueue
    moveQueue:R --> L:moveLambda
    j2:T --> B:moveLambda
    j1:R -- R:j2

    moveLambda:R -- L:j3
    j3:T -- B:j4
    j4:R -- L:j5
    j5:R --> L:quarantineBucket
    j5:T -- L:j6
    j6:R --> L:quarantinedFile

    j3:B -- T:j7
    j7:R -- L:j8
    j8:R --> L:safeBucket
    j8:B -- L:j9
    j9:R --> L:safeFile