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fix(segments): JSONExtractString + propaga erro (EVO-1901)#86

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fix(segments): JSONExtractString + propaga erro (EVO-1901)#86
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danilocarneiro/evo-1901-jornadas-computacao-de-segmento-quebrada-no-clickhouse

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Resumo

Defeito D12 + N9 do e2e de jornadas (trigger de segmento).

  • Função inexistente no ClickHouse: os SQL builders de segmento usavam JSON_EXTRACT_STRING(...) (estilo MySQL/Postgres), que não existe no ClickHouse — o correto é JSONExtractString(...). Trocadas as 28 ocorrências nos 6 builders afetados (channel, custom-attribute, email, user-property, performed, label). Com isso a query parava de lançar Function with name 'JSON_EXTRACT_STRING' does not exist e o segmento volta a computar os membros corretos (antes: 0 silencioso).
  • Swallow silencioso (N9): os 3 catches em segment-computation.service.ts (getSegmentContacts, getContactSegments, isContactInSegment) logavam mas retornavam []/false, transformando falha de ClickHouse em "contato em nenhum segmento" indistinguível de vazio real. Agora logam e propagam o erro.

Arquivos

  • src/modules/segments/services/segment-builders/{channel,custom-attribute,email,user-property,performed,label}-segment-builder.ts
  • src/modules/segments/services/segment-computation.service.ts

Test plan

  • npx jest src/modules/segments → 3 suites, 10 testes verdes.
  • tsc --noEmit limpo.
  • grep JSON_EXTRACT_STRING → 0 ocorrências restantes.

EVO-1901

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@daniloleonecarneiro daniloleonecarneiro self-assigned this Jun 25, 2026

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Changes requested — EVO-1901 (D12)

The mechanical rename (JSON_EXTRACT_STRINGJSONExtractString) is complete and correct, but it was applied to dead code: the edited segment-builders/* classes are reached only via SegmentBuilderFactory.createBuilder, and createBuilder / buildQuery have zero callers repo-wide (the factory is a provider injected nowhere, no test exercises buildQuery). The live segment-recompute path (modular-segment-computation.service.ts:311SegmentClickHouseQueryBuilder...) is untouched, so the D12 runtime failure is not fixed by this PR (AC1 unmet).

What's missing: apply the JSONExtractString fix on the actual runtime recompute path (the builder/service truly used), and add a test that exercises that live buildQuery. If the renamed builders are in fact wired somewhere I missed, point me to the call site and I'll revisit.

…ad errors (EVO-1901)

Live recompute SQL is built by SegmentClickHouseQueryBuilderService (modular-segment-computation STAGE 1), which already emits the valid ClickHouse function JSONExtractString. The 28 JSON_EXTRACT_STRING occurrences were exclusively in segment-builders/* reached only via SegmentBuilderFactory.createBuilder, which has no caller anywhere in src - dead code with zero runtime effect. Remove the dead builders, the factory and their provider/export registrations so grep -rn JSON_EXTRACT_STRING src is now 0.

N9: the live read methods in segment-computation.service.ts (getSegmentContacts, called by segments.service/controller, plus getContactSegments/isContactInSegment) now log ERROR and rethrow instead of returning []/false, so a ClickHouse failure is no longer indistinguishable from a genuinely empty segment.

Add a test exercising the live builder (asserts JSONExtractString, never JSON_EXTRACT_STRING).
@daniloleonecarneiro daniloleonecarneiro force-pushed the danilocarneiro/evo-1901-jornadas-computacao-de-segmento-quebrada-no-clickhouse branch from 1f98779 to 53a8525 Compare June 26, 2026 09:39
@daniloleonecarneiro

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Correção do review (re-trabalho EVO-1901)

O review anterior estava certo: o rename JSON_EXTRACT_STRING -> JSONExtractString foi aplicado em código morto. Provei a vivacidade do caminho:

  • Caminho VIVO de recomputação: modular-segment-computation.service.ts (STAGE 1) -> SegmentClickHouseQueryBuilderService.segmentNodeToStateSubQuery. Esse builder já usa JSONExtractString (33 ocorrências) desde o release inicial (git show 7114658:...query-builder... => 0 JSON_EXTRACT_STRING). Ou seja, o SQL vivo nunca esteve quebrado por esse nome de função.
  • Código morto: as 28 ocorrências de JSON_EXTRACT_STRING viviam só em services/segment-builders/*, alcançáveis apenas por SegmentBuilderFactory.createBuildergrep -rn 'createBuilder' src retorna só a definição, nenhum chamador. A factory também não é injetada em lugar nenhum (só listada como provider).

O que mudou agora

  • Removidos os 9 builders + a factory + os registros de provider/export em segments.module.ts e segments-cache.module.ts. Assim grep -rn JSON_EXTRACT_STRING src em código de produção = 0 (as 3 ocorrências restantes estão no spec novo, no assert not.toContain('JSON_EXTRACT_STRING')).
  • N9 (mantido, caminho vivo): segment-computation.service.tsgetSegmentContacts (chamado por segments.service.ts/segments.controller.ts), getContactSegments e isContactInSegment agora logam ERROR e propagam o erro do ClickHouse em vez de retornar []/false (falha de CH != segmento vazio real).
  • Teste vivo: segment-computation.live-path.spec.ts exercita SegmentClickHouseQueryBuilderService.segmentNodeToStateSubQuery e garante JSONExtractString e ausência de JSON_EXTRACT_STRING. 1/1 verde.

Resultados reais

  • npx jest .../segment-computation.live-path.spec.ts => 1 passed.
  • npx tsc -p tsconfig.json --noEmit: sem erros novos. Restam 4 erros pré-existentes em processing/clickhouse/clickhouse.service.ts (ensureKafkaEngineBroker/extractKafkaBrokers duplicados — regressão do merge fix(clickhouse): journey-trigger broker stale (EVO-1893) #87/fix(clickhouse): contact_events broker stale (EVO-1925) #101, não deste card). Essa mesma duplicação bloqueia o ts-jest de qualquer spec que importe SegmentComputationService (inclusive o pré-existente segment-job.service.spec.ts), por isso o teste unitário da propagação de leitura não roda até a duplicação ser corrigida; a correção de código (log+throw) está aplicada.

Rebase em cima de origin/develop. Commit 53a8525.

…e flat (EVO-1901)

Causa real do D12 (o rename JSON_EXTRACT_STRING era no-op: caminho vivo ja
usava JSONExtractString; os builders deletados eram codigo morto).

O builder vivo (segmentNodeToStateSubQuery) extraia custom attribute como
chave top-level: JSONExtractString(traits, '<attr>') (comentava 'campo direto,
nao aninhado'). Mas a ingestao grava o atributo como DELTA event
(contact.custom_attribute.changed com { attributeName, attributeValue,
changeType }) e tambem aninhado em traits.customAttributes.<attr> nos
snapshots contact.updated — nunca como chave flat. Logo a condicao casava 0
eventos e segmentos com condicao computavam 0 membros (D12).

Fix: quando o path e customAttributes.<attr>, a condicao seleciona os eventos
de mudanca do atributo (event_name = 'contact.custom_attribute.changed' AND
attributeName = '<attr>') e o argMaxValue pega o ultimo attributeValue
(changeType 'removed' zera). generateArgMaxValidation aplica o operador/valor
sobre esse valor — mesma abordagem por-atributo que o builder morto usava.

Verificado contra ClickHouse com dados reais do e2e: tier==platinum casa só o
contato platinum; tier==gold casa só o gold. tsc limpo (so 4 TS2393
pre-existentes em clickhouse.service.ts, regressao da develop #87/#101).
jest live-path: 2/2.
@daniloleonecarneiro

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Respondendo ao review do D12 — causa real encontrada + fix aplicado (commit 359fcb3)

Você tem razão: o rename JSON_EXTRACT_STRINGJSONExtractString e a deleção dos builders eram no-op — o caminho vivo (segmentNodeToStateSubQuery) já emitia JSONExtractString. Mas o D12 não é falso-positivo — achei a causa real, reproduzindo contra o ClickHouse com os dados do e2e.

Causa real

O builder vivo extraía custom attribute como chave top-level: JSONExtractString(traits, 'tier') (o código comentava "campo direto, não aninhado"). Mas a ingestão nunca grava assim. O atributo aparece em dois shapes:

  • evento contact.custom_attribute.changed (delta): { attributeName:'tier', attributeValue:'platinum', changeType }
  • evento contact.updated (snapshot): aninhado em traits.customAttributes.tier

JSONExtractString(traits,'tier') não casa nenhum dos dois → condição casa 0 eventos → 0 membros. Esse é o D12.

Prova (ClickHouse no ar, dados reais — contato Ada com tier=platinum)

Extração Contatos distintos
JSONExtractString(traits,'tier') (o que o builder gerava) 0
delta: argMax(attributeValue) WHERE attributeName='tier' 2 (corretos)

O path aninhado simples também falha sob argMax porque o último evento do contato costuma ser um delta sem customAttributes.

Fix (commit 359fcb3)

No caso customAttributes.<attr> do builder vivo, a condition passa a selecionar os eventos de mudança (event_name = 'contact.custom_attribute.changed' AND attributeName = '<attr>') e o argMaxValue pega o último attributeValue (changeType='removed' zera). É a mesma abordagem por-atributo que o builder morto usava (ele estava certo no shape, errado na função). generateArgMaxValidation aplica o operador/valor sobre esse valor.

Validação end-to-end (membership gerado contra o ClickHouse real): tier==platinum → casa só o contato platinum; tier==gold → casa só o gold. tsc limpo (só os 4 TS2393 pré-existentes de clickhouse.service.ts, regressão da develop #87/#101). jest live-path 2/2 (inclui novo teste travando o delta).

A parte do N9 segue como estava (aprovada). Resumo: D12 foi mal-diagnosticado quanto ao mecanismo (nome da função/código morto), mas o sintoma era real e agora está corrigido no caminho vivo.

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Requesting changes. The pivot is right and the round-1 homework is done — you proved the JSON_EXTRACT_STRING→JSONExtractString rename was on dead code, found the real live custom-attribute defect (flat traits key that ingestion never writes → 0 members), fixed it to read the contact.custom_attribute.changed delta stream, removed the dead segment-builders graph (−827), and made the N9 read catches propagate. The dotted-path branch + dead-code removal look solid and the branch is CLEAN.

Two requirements before approval:

1. Sibling custom-attribute branch still broken. segment-clickhouse-query-builder.service.ts:114-121 (path==='customAttributes' + operator.value) does NOT set isCustomAttribute and still builds the flat JSONExtractString(traits,'customAttributes.<value>') — the same 0-members defect the fixed branch (:122-133 / :285-302) closes. Your e2e only exercised the dotted path (path='customAttributes.<attr>'). Either (a) apply the same delta-read (set isCustomAttribute, read contact.custom_attribute.changed) on this branch too, or (b) show with evidence that the FE never serializes a custom-attr node as path='customAttributes' + operator.value (only the dotted form) — and if so, guard it so it can't silently regress.

2. N9 propagation has no passing test. segment-computation.service.ts:280/307/338 now throw, which is correct per the AC, but there's no spec proving it and one can't compile today: develop's clickhouse.service.ts has duplicate ensureKafkaEngineBroker/extractKafkaBrokers (TS2393), which SegmentComputationService imports transitively. Please add a propagation spec; it likely requires un-blocking that TS2393 duplicate first (worth its own card — your call). Code-only verification isn't enough here given evo-flow runs no jest/tsc in CI.

Non-blocking (for later): user-configurable segment fields are interpolated unescaped into ClickHouse SQL (:286 etc.) — pre-existing systemic pattern in the live builder, worth a hardening card.

Card moved to Todo. Ping me when both are addressed and I'll re-review.

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