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alerting(api): cross-field validation for PER_EXCHANGE + empty-targets guard

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PER_EXCHANGE rules: 400 if reNotifyMinutes != 0 or forDurationSeconds != 0.
Any rule: 400 if webhooks + targets are both empty (never notifies anyone).

Turns green: AlertRuleControllerIT#createPerExchangeRule_with*NonZero_returns400,
AlertRuleControllerIT#createAnyRule_withEmptyWebhooksAndTargets_returns400.
This commit is contained in:
hsiegeln
2026-04-22 17:31:11 +02:00
parent 377968eb53
commit 0f6bafae8e
2 changed files with 38 additions and 2 deletions
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33
cameleer-server-app/src/main/java/com/cameleer/server/app/alerting/controller/AlertRuleController.java
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@@ -22,6 +22,7 @@ import com.cameleer.server.core.alerting.AlertRuleRepository;
import com.cameleer.server.core.alerting.AlertRuleTarget;
import com.cameleer.server.core.alerting.ConditionKind;
import com.cameleer.server.core.alerting.ExchangeMatchCondition;
import com.cameleer.server.core.alerting.FireMode;
import com.cameleer.server.core.alerting.WebhookBinding;
import com.cameleer.server.core.outbound.OutboundConnection;
import com.cameleer.server.core.outbound.OutboundConnectionService;
@@ -126,6 +127,7 @@ public class AlertRuleController {
HttpServletRequest httpRequest) {
validateAttributeKeys(req.condition());
validateBusinessRules(req);
validateWebhooks(req.webhooks(), env.id());
AlertRule draft = buildRule(null, env.id(), req, currentUserId());
@@ -147,6 +149,7 @@ public class AlertRuleController {
AlertRule existing = requireRule(id, env.id());
validateAttributeKeys(req.condition());
validateBusinessRules(req);
validateWebhooks(req.webhooks(), env.id());
AlertRule updated = buildRule(existing, env.id(), req, currentUserId());
@@ -258,6 +261,36 @@ public class AlertRuleController {
// Helpers
// -------------------------------------------------------------------------
/**
* Cross-field business-rule validation for {@link AlertRuleRequest}.
*
* <p>PER_EXCHANGE rules: re-notify and for-duration are nonsensical (each fire is its own
* exchange — there's no "still firing" window and nothing to re-notify about). Reject 400
* if either is non-zero.
*
* <p>All rules: reject 400 if both webhooks and targets are empty — such a rule can never
* notify anyone and is a pure footgun.
*/
private void validateBusinessRules(AlertRuleRequest req) {
if (req.condition() instanceof ExchangeMatchCondition ex
&& ex.fireMode() == FireMode.PER_EXCHANGE) {
if (req.reNotifyMinutes() != null && req.reNotifyMinutes() != 0) {
throw new ResponseStatusException(HttpStatus.BAD_REQUEST,
"reNotifyMinutes must be 0 for PER_EXCHANGE rules (re-notify does not apply)");
}
if (req.forDurationSeconds() != null && req.forDurationSeconds() != 0) {
throw new ResponseStatusException(HttpStatus.BAD_REQUEST,
"forDurationSeconds must be 0 for PER_EXCHANGE rules");
}
}
boolean noWebhooks = req.webhooks() == null || req.webhooks().isEmpty();
boolean noTargets = req.targets() == null || req.targets().isEmpty();
if (noWebhooks && noTargets) {
throw new ResponseStatusException(HttpStatus.BAD_REQUEST,
"rule must have at least one webhook or target — otherwise it never notifies anyone");
}
}
/**
* Validates that all attribute keys in an {@link ExchangeMatchCondition} match
* {@code ^[a-zA-Z0-9._-]+$}. Keys are inlined into ClickHouse SQL, making this