feat(helm): fail on contradictory storage dsn + passwordSecretRef - #3319
feat(helm): fail on contradictory storage dsn + passwordSecretRef#3319renuka-fernando wants to merge 2 commits into
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A full storage dsn is used verbatim by the controller (buildPostgresDSN / buildSQLServerDSN); the separately-injected passwordSecretRef password is never merged into it. Setting both silently dropped the secret, leaving the controller to connect with no password and crashloop on an opaque DB auth error. - Add a render-time guard to gateway-config.yaml (postgres and sqlserver blocks) that fails when a dsn is set alongside its passwordSecretRef unless the dsn references the injected password env token. - Rewrite the misleading values.yaml comments that implied a password-less dsn plus a separate secret works. Refs wso2#3318 Signed-off-by: Renuka Fernando <renukapiyumal@gmail.com>
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📝 WalkthroughWalkthroughThe Gateway Helm chart now rejects contradictory DSN and ChangesGateway Helm storage validation
Estimated code review effort: 2 (Simple) | ~10 minutes Merge Risk: 🔵 Low · up to The chart validation can still accept some contradictory DSN and password-secret configurations when the password token appears in the wrong part of the DSN, allowing a deployment-time connection failure instead of a clear render error. This is a bounded follow-up item for the chart owner. Suggested reviewers: 🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
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Inline comments:
In `@kubernetes/helm/gateway-helm-chart/templates/gateway/gateway-config.yaml`:
- Around line 87-89: Update both DSN guards in
kubernetes/helm/gateway-helm-chart/templates/gateway/gateway-config.yaml at
lines 87-89 and 118-120 to validate the complete env interpolation token within
the respective password component, not merely the environment-variable name
anywhere in the DSN; use the PostgreSQL token for the PostgreSQL guard and the
SQL Server token for the SQL Server guard, preserving the existing fail
behavior.
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kubernetes/helm/gateway-helm-chart/templates/gateway/gateway-config.yamlkubernetes/helm/gateway-helm-chart/values.yaml
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Address CodeRabbit review on wso2#3319: the guard used a substring match on the bare env-var name, so a DSN mentioning the name outside a real interpolation token (e.g. in the dbname) wrongly passed while the passwordSecretRef stayed ignored. Match the full {{ env "VAR" }} token via regexMatch instead, tolerating the {{- trim marker, spacing, and the "" default arg so legitimate token forms still render. Refs wso2#3318 Signed-off-by: Renuka Fernando <renukapiyumal@gmail.com>
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Purpose
The
gateway-helm-chartlets an operator configure the controller's external database (postgres/sqlserver) either via a fulldsnor via individualhost/port/database/userfields with the password injected separately from a Secret (passwordSecretRef). These two modes are mutually exclusive, but the chart neither enforced nor clearly documented that, so a common misconfiguration passed silently.The controller's
buildPostgresDSN(gateway/gateway-controller/pkg/storage/postgres.go:140) andbuildSQLServerDSN(pkg/storage/sqlserver.go) return thedsnverbatim when set and never merge the separately-configured password. At the chart level thepassword = '{{ env ... }}'line is only rendered in the non-DSN branch, so when adsnis set the injectedAPIP_GW_CONTROLLER_STORAGE_POSTGRES_PASSWORDenv var has nothing to consume it. An operator who set a password-lessdsnalongside apasswordSecretRefgot a controller that connected with no password and crashlooped on an opaque Postgrespassword authentication failederror that pointed at the database, not at the contradictory Helm values. Thevalues.yamlcomments made it worse by stating both "Full DSN takes precedence over individual fields when set" and "Password is injected separately via passwordSecretRef", which read as if a password-less DSN plus a separate secret works.Resolves #3318.
Goals
{{ env ... }}token inside the DSN so the password stays in a Secret rather than the ConfigMap.Approach
templates/gateway/gateway-config.yamlfor both thepostgresandsqlserver/databaseblocks:failwhen adsnis set and the matchingpasswordSecretRef.nameis set and thedsndoes not reference the injected password env token. The error message tells the operator to either embed the token in the DSN or drop the secret ref. This is consistent with the chart's existingfail/requiredvalidation (removedsqlserverkey, missing host/db/user,encryptenum).contains "APIP_GW_CONTROLLER_STORAGE_POSTGRES_PASSWORD"/..._DATABASE_PASSWORD) intentionally allows the secure "token inside the DSN" pattern to keep working.values.yamlcomments in thepostgres,database, and bothpasswordSecretRefblocks to state that the two modes are mutually exclusive, that the DSN is used verbatim, that a literal password in the DSN lands in the ConfigMap in plaintext, and to show a copy-pasteable token example.User stories
As an operator deploying the gateway against an external database, when I misconfigure the connection by setting a
dsnalongside apasswordSecretRefthat the DSN does not use, I get an immediate, actionable Helm render error instead of a controller crashloop with a misleading database error.Documentation
N/A. The change is limited to in-chart
values.yamlcomments and a render-time error message; there is no external product documentation impacted.Automation tests
Security checks
Samples
N/A
Related PRs
N/A
Test environment
Helm v3.18.3, macOS (Darwin 25.5.0). Chart rendered and linted locally; no live database connection required for these tests.