Zone02 (zone02)

Status: Final

Purpose

  • Validate that SOA refresh is at or above the configured minimum threshold.

Preconditions And Inputs

  • Preconditions:
    • A zone.Zone object is available.
  • Required inputs:
    • Child nameserver addresses from methods.Method5.
    • One authoritative SOA response for the child zone apex (if obtainable).
  • Profile/config knobs that affect behavior:
    • test_cases_vars.zone02.soa_refresh_minimum_value (Zone02.SOARefreshMinimumValue in code): minimum accepted refresh.
    • net.ipv4 and net.ipv6 affect transport availability during SOA retrieval.

Algorithm And Decision Flow

  1. Emit TEST_CASE_START.
  2. Retrieve SOA from child nameservers using shared helper logic:
    • iterate Method5 nameservers in order;
    • skip disabled transports;
    • return the first response that has SOA in answer and AA=true.
  3. If no qualifying SOA response is found, emit NO_RESPONSE_SOA_QUERY.
  4. Else read SOA refresh and compare against configured minimum:
    • if refresh < required_refresh, emit REFRESH_MINIMUM_VALUE_LOWER;
    • else emit REFRESH_MINIMUM_VALUE_OK.
  5. Emit TEST_CASE_END.

Emitted Tags (Possible Set)

TagEmitted when
NO_RESPONSE_SOA_QUERYNo authoritative SOA response containing an SOA answer record was received from any queried nameserver.
REFRESH_MINIMUM_VALUE_LOWERSOA refresh is below configured minimum.
REFRESH_MINIMUM_VALUE_OKSOA refresh is at or above configured minimum.
TEST_CASE_ENDTestcase completion marker is emitted.
TEST_CASE_STARTTestcase start marker is emitted.

Tag Arguments

TagArgument keyTypeMeaning
NO_RESPONSE_SOA_QUERY--No arguments.
REFRESH_MINIMUM_VALUE_LOWERrefreshintObserved SOA refresh value.
REFRESH_MINIMUM_VALUE_LOWERrequired_refreshintConfigured minimum refresh threshold.
REFRESH_MINIMUM_VALUE_OKrefreshintObserved SOA refresh value.
REFRESH_MINIMUM_VALUE_OKrequired_refreshintConfigured minimum refresh threshold.
TEST_CASE_ENDtestcasestringTestcase display name (Zone02).
TEST_CASE_STARTtestcasestringTestcase display name (Zone02).

Severity Levels Per Tag

TagLevelNotes
NO_RESPONSE_SOA_QUERYDEBUGDefault from share/profile.json (test_levels.ZONE).
REFRESH_MINIMUM_VALUE_LOWERNOTICEDefault from share/profile.json (test_levels.ZONE).
REFRESH_MINIMUM_VALUE_OKINFODefault from share/profile.json (test_levels.ZONE).
TEST_CASE_ENDDEBUGDefault from share/profile.json (test_levels.ZONE).
TEST_CASE_STARTDEBUGDefault from share/profile.json (test_levels.ZONE).

Differences From Upstream

  • Upstream reference: zone02.md
  • Differences (Upstream vs Gonemaster):
    • Upstream: specifies a fixed minimum of 14400 seconds. Gonemaster: uses profile-configurable minimum (Zone02.SOARefreshMinimumValue).
    • Upstream: describes this condition as testcase failure when below threshold. Gonemaster: emits REFRESH_MINIMUM_VALUE_LOWER with default severity NOTICE (profile-controlled), not a hardcoded fail outcome.
    • Upstream: does not describe testcase boundary debug markers. Gonemaster: emits TEST_CASE_START and TEST_CASE_END.
  • Potential upstream report:
    • yes
  • If yes, include:
    • Upstream expected behavior: Upstream prose defines below-threshold refresh as testcase failure with fixed numeric minimum.
    • Gonemaster observed behavior: Threshold is profile-driven and below-threshold result is a tagged finding (NOTICE by default), not a fixed fail primitive.
    • evidence: docs/specifications/upstream/tests/Zone-TP/zone02.md, engine/test/zone/zone.go, share/profile.json
    • report status: not filed

Edge Cases And Limitations

  • The shared retrieval helper emits IPV4_DISABLED or IPV6_DISABLED when the corresponding transport is disabled; these tags are not declared in this testcase’s Metadata() function.
  • If helper cannot find an authoritative SOA answer, no threshold comparison is attempted.