Datasets:

cjc0013
/

aws-carddemo-no-cost-modernization-proof

The original AWS CardDemo source clone is preserved at ../source.
Seed data is loaded from the original ASCII/EBCDIC files under ../source/app/data.
Fixed-width layouts are derived from CardDemo copybooks for customer, account, card, card xref, transaction, transaction type, transaction category, and user security records.
The old system remains the behavioral oracle where it can be exercised. This lab does not require human approval; unresolved behavior becomes an assumption or gap receipt.

Modern Target

Standard-library Python 3 application.
SQLite persistence.
JSON API plus browser UI.
No external package install required.
Batch/report parity surfaces for TRANREPT, CREASTMT, INTCALC, and COMBTRAN.
Batch resource setup/control parity metadata for DEFGDGB, DEFGDGD, ESDSRRDS, TRANIDX, CLOSEFIL, and OPENFIL.
Signon, regular/admin menu routing, and SQLite-backed user security maintenance for CC00, CM00, CA00, CU01, CU02, and CU03.
Transaction type maintenance for CTTU, including type-code validation, update/insert, no-change rejection, and guarded delete.
MQ request/reply parity surfaces for CDRD and CDRA, including source-shaped 1000-byte message metadata, system date/time reply formatting, and account inquiry over ACCTDAT.
Pending authorization IMS/DB2/MQ parity surfaces for CPVS, CPVD, CP00, and CBPAUP0J, seeded from the original DBPAUTP0 IMS unload.

Run

cd D:\scraper_storage\modernization_labs\aws-carddemo-modernization-20260523T073000Z\modern_carddemo
python -m carddemo.cli init-db --source-root ..\source --db-path .\carddemo.sqlite
python -m carddemo.cli serve --source-root ..\source --db-path .\carddemo.sqlite --port 8087

Open http://127.0.0.1:8087.

Test And Receipts

python -m unittest discover -s tests
python tools\generate_receipts.py --source-root ..\source --db-path .\carddemo.sqlite --out-dir .\reports
python tools\replay_static_oracles.py --source-root ..\source --out-dir .\reports

Receipt and replay generation write the capability-parity proof pack:

reports/capability_ledger.json: every discovered AWS CardDemo online and batch capability with source refs and proof grade.
reports/golden_traces.json: deterministic service traces backed by legacy seed files or explicit inferred rules.
reports/edge_cases.json: data- and copybook-derived edge cases to drive future parity closure.
reports/next_gap_ranking.json: autonomous next-work queue, sorted by gap severity and capability priority.
reports/static_oracle_replay.json: executable modern-service replay over the static/source-oracle trace pack, using a scratch SQLite database.

Proof grades are A for actual legacy runtime trace match, B for static legacy data/copybook oracle match, C for implemented or inferred without strict parity proof, and F for discovered capability gaps.

Added Batch/API Surfaces

GET /api/reports/transactions: seed-data transaction detail report following the legacy TRANREPT joins and date filter shape.
GET /api/statements/{account_id}: account statement text/HTML payload following the CREASTMT account, customer, card, transaction source sort, 80-byte statement line, and total-expense flow.
GET /api/interest-projection: INTCALC formula preview using TCATBALF and DISCGRP seed files.
GET /api/batch/combined-transactions: COMBTRAN-style concatenation of TRANSACT.BKUP(0) and SYSTRAN(0), ascending TRAN-ID sort, TRANSACT.COMBINED(+1) output metadata, and transaction KSDS REPRO target metadata.
GET /api/batch/transaction-master-backup: TRANBKP-style transaction master backup/redefine metadata, including REPROC source/backup datasets, IDCAMS delete targets, 350-byte KSDS record size, and 16-byte transaction-id key contract.
GET /api/batch/transaction-type-extract: TRANEXTR-style DSNTIAUL extract for transaction type/category reference files, including backup/output datasets, ordered 60-byte records, and zero-fill suffixes.
GET /api/batch/db2-reference-setup: CREADB21-style Db2 transaction reference setup, including free-plan/create/load step order, database/tablespace/table/index/grant metadata, load counts, and category-to-type restrict-delete foreign key.
GET /api/batch/resource-setup: setup/control metadata for DEFGDGB, DEFGDGD, ESDSRRDS, TRANIDX, CLOSEFIL, and OPENFIL; pass job=<name> for one source job.
GET/POST /api/mq/system-date: CDRD/CODATE01 MQ request/reply model that returns SYSTEM DATE : MM-DD-YYYY and SYSTEM TIME : HH:MM:SS using the source reply labels.
GET/POST /api/mq/account-inquiry: CDRA/COACCT01 MQ request/reply model for INQA plus an 11-digit account key, returning labeled ACCTDAT account fields or the source-shaped invalid-parameters reply.
GET /api/pending-authorizations/summary: CPVS pending authorization summary and five-row page flow over decoded PAUTSUM0/PAUTDTL1 IMS unload records.
GET /api/pending-authorizations/detail: CPVD pending authorization detail lookup by source-shaped authorization key or transaction id.
POST /api/pending-authorizations/process: CP00 authorization request processing with comma-delimited MQ request shape, available-credit decision, response CSV, summary update/insert, and detail insert.
POST /api/pending-authorizations/fraud: CPVD/COPAUS2C fraud mark/remove flow with AUTHFRDS shadow-table write.
POST /api/batch/purge-authorizations: CBPAUP0J/CBPAUP0C expired authorization purge using the reverse-date PA-AUTH-DATE-9C calculation and summary counter adjustment.
PATCH /api/accounts/{account_id}: CAUP account update flow with account/xref lookup, Y/N status validation, signed money/date validation, no-change rejection, and account/customer SQLite rewrites.
GET /api/cards/{card_number} and PATCH /api/cards/{card_number}: CCDL/CCUP card detail and update flow with account/card key validation, alphabetic embossed names, Y/N status, expiry month/year validation, no-change rejection, hidden-field preservation, and card SQLite rewrites.
POST /api/transactions: CT02 transaction-add flow with account/card xref lookup, confirmation, signed amount/date/merchant validation, transaction-id increment, and TRANSACT write without account-balance mutation.
GET /api/transaction-types: CTLI transaction type list view with source-shaped seven-row cursor paging, forward/backward navigation, exact type-code filtering, and LIKE description filtering.
POST /api/transaction-types, PATCH /api/transaction-types/{type_code}, and DELETE /api/transaction-types/{type_code}: CTTU transaction type maintenance with two-digit numeric nonzero type codes, required alphanumeric descriptions, no-change rejection, update-or-insert behavior, and child-record delete protection.
POST /api/batch/transaction-types: MNTTRDB2/COBTUPDT batch transaction type maintenance over fixed INPFILE records, including A add, U update, D delete, * comment handling, return-code 4 error reporting, duplicate/missing-row SQL outcomes, and Db2 restrict-delete behavior.
POST /api/post-transactions: POSTTRAN-style batch posting with card/account lookup, overlimit rejection, expiration rejection, category-balance update, and account cycle update.
POST /api/signon: CC00 signon over decoded USRSEC, including uppercase credential normalization and admin/user menu routing.
GET /api/menu/main and GET /api/menu/admin: CM00 and CA00 menu option surfaces transcribed from the legacy menu copybooks/source.
POST /api/users, PATCH /api/users/{user_id}, and DELETE /api/users/{user_id}: CU01, CU02, and CU03 user maintenance flows over the modern SQLite user table, including source-shaped blank-field, duplicate, no-change, not-found, and non-admin user-type behavior.

Current Claim Limit

This is not claimed to be a proven production-equivalent replacement. It is a runnable modern target with seed-data parity checks, source fingerprints, tests, capability proof grades, gap ranking, and executable modern-service replay over static/source-oracle traces. Runtime parity against the original COBOL/CICS execution remains a gap unless a compatible mainframe or emulator harness is attached.