Implement GeneratorService data masking & generation execution logic

[Copilot]

JobService fetched column generators from the DB but never applied them — no GeneratorService existed to transform data. MASK and GENERATE table modes were effectively no-ops.

Changes

• GeneratorService — new Spring service implementing all 11 GeneratorType variants via datafaker 2.1.0:

  • NAME, EMAIL, PHONE, ADDRESS, SSN, CREDIT_CARD, DATE, UUID — realistic synthetic values from faker
  • CONSTANT — returns params["value"] (JSON-configured)
  • NULL — returns null
  • CUSTOM — returns params["value"] with fallback to original source value
  • applyGenerators(row, generators) — masks an existing row in-place per column config
  • generateRows(generators, count) — produces fully synthetic rows with no source dependency

• JobService.processTable() — wired GeneratorService into both active modes:

  • MASK: fetch source rows → applyGenerators() per row → write to destination
  • GENERATE: generateRows(generators, rowLimit ?: 100) → write to destination (no source read)

• GeneratorServiceTest — adds 3 tests for previously uncovered generateRows path: correct row count, zero-count edge case, and CUSTOM originalValue fallback.

// MASK: each source row is transformed
val maskedData = data.map { row -> generatorService.applyGenerators(row, generators) }
destConnector.writeData(tableConfig.tableName, maskedData)

// GENERATE: no source read, pure synthetic output
val generatedData = generatorService.generateRows(generators, rowCount)
destConnector.writeData(tableConfig.tableName, generatedData)

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• example.com
  • Triggering command: /usr/lib/jvm/temurin-17-jdk-amd64/bin/java /usr/lib/jvm/temurin-17-jdk-amd64/bin/java -Dorg.gradle.internal.worker.tmpdir=/home/REDACTED/work/OpenDataMask/OpenDataMask/backend/build/tmp/test/work -Dorg.gradle.native=false -javaagent:/home/REDACTED/work/OpenDataMask/OpenDataMask/backend/build/tmp/.cache/expanded/zip_0bd0851504e6286cb5fc6f37a81e25cc/jacocoagent.jar=destfile=build/jacoco/test.exec,append=true,inclnolocationclasses=false,dumponexit=true,output=file,jmx=false @/home/REDACTED/.gradle/.tmp/gradle-worker-classpath9555417616528680429txt -Xmx512m -Dfile.encoding=UTF-8 -Duser.country -Duser.language=en -Duser.variant -ea worker.org.gradle.process.internal.worker.GradleWorkerMain 'Gradle Test Executor 1' (dns block)
  • Triggering command: /usr/lib/jvm/temurin-17-jdk-amd64/bin/java /usr/lib/jvm/temurin-17-jdk-amd64/bin/java -Dorg.gradle.internal.worker.tmpdir=/home/REDACTED/work/OpenDataMask/OpenDataMask/backend/build/tmp/test/work -Dorg.gradle.native=false -javaagent:/home/REDACTED/work/OpenDataMask/OpenDataMask/backend/build/tmp/.cache/expanded/zip_0bd0851504e6286cb5fc6f37a81e25cc/jacocoagent.jar=destfile=build/jacoco/test.exec,append=true,inclnolocationclasses=false,dumponexit=true,output=file,jmx=false @/home/REDACTED/.gradle/.tmp/gradle-worker-classpath11343826022672846332txt -Xmx512m -Dfile.encoding=UTF-8 -Duser.country -Duser.language=en -Duser.variant -ea worker.org.gradle.process.internal.worker.GradleWorkerMain 'Gradle Test Executor 3' (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

[Copilot]

Pull request overview

Adds unit tests to validate row generation behavior in GeneratorService, ensuring correct row counts and expected fallback behavior for CUSTOM generators.

Changes:

• Added tests verifying generateRows returns the requested number of rows and produces non-empty generated values.
• Added test verifying generateRows returns an empty list when count is zero.
• Added test verifying GeneratorType.CUSTOM falls back to originalValue when params are not provided.

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