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baiyue-firstleg/common-web/src/test/java/com/baiyue/common/web/EventDeliveryMetricsTest.java
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2026-09-29 18:47:37 +08:00
package com.baiyue.common.web;
import io.micrometer.core.instrument.simple.SimpleMeterRegistry;
import org.junit.jupiter.api.Test;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.datasource.DriverManagerDataSource;
import java.time.LocalDateTime;
import java.sql.Timestamp;
import java.util.Map;
import java.util.List;
import static org.mockito.ArgumentMatchers.*;
import java.util.UUID;
import static org.assertj.core.api.Assertions.*;
import static org.mockito.Mockito.*;
class EventDeliveryMetricsTest {
@Test void samplesBoundedTypesAndPreservesPriorValuesWhenDatabaseFailsWithoutQueryingDuringScrapes() {
var jdbc = spy(new JdbcTemplate(new DriverManagerDataSource("jdbc:h2:mem:" + UUID.randomUUID() + ";MODE=MySQL;DB_CLOSE_DELAY=-1", "sa", "")));
jdbc.execute("CREATE TABLE ll_event_outbox(event_type VARCHAR(200),status VARCHAR(32),created_at TIMESTAMP)");
var now = LocalDateTime.now();
jdbc.update("INSERT INTO ll_event_outbox VALUES('BusinessFeeSourceChanged','PENDING',?)", now.minusSeconds(60));
jdbc.update("INSERT INTO ll_event_outbox VALUES('BusinessFeeSourceChanged','PROCESSING',?)", now.minusSeconds(30));
jdbc.update("INSERT INTO ll_event_outbox VALUES('BusinessFeeSourceChanged','DEAD',?)", now.minusSeconds(120));
jdbc.update("INSERT INTO ll_event_outbox VALUES('user-controlled-unknown-type','PENDING',?)", now.minusYears(1));
var registry = new SimpleMeterRegistry();
var metrics = new EventDeliveryMetrics(jdbc, registry);
metrics.sample(EventDeliveryMetrics.Stream.FEE, now);
assertThat(registry.get("baiyue.event.delivery.pending").gauge().value()).isEqualTo(2);
assertThat(registry.get("baiyue.event.delivery.dead").gauge().value()).isEqualTo(1);
assertThat(registry.get("baiyue.event.delivery.oldest.pending.seconds").gauge().value()).isBetween(59.99, 60.01);
double sampledAt = registry.get("baiyue.event.delivery.sample.timestamp").gauge().value();
jdbc.execute("DROP TABLE ll_event_outbox");
metrics.sample(EventDeliveryMetrics.Stream.FEE, now.plusMinutes(1));
clearInvocations(jdbc);
assertThat(registry.get("baiyue.event.delivery.pending").gauge().value()).isEqualTo(2);
assertThat(registry.get("baiyue.event.delivery.sample.timestamp").gauge().value()).isEqualTo(sampledAt);
assertThat(registry.get("baiyue.event.delivery.sample.success").gauge().value()).isZero();
registry.getMeters().forEach(meter -> {
assertThat(meter.getId().getTag("event_type")).isEqualTo("BusinessFeeSourceChanged");
meter.measure().forEach(measurement -> measurement.getValue());
});
verifyNoInteractions(jdbc);
}
@Test void supportsBothMysqlLocalDateTimeAndJdbcTimestampAndRejectsUnknownTypes() {
var jdbc = mock(JdbcTemplate.class);
var now = LocalDateTime.of(2026, 9, 29, 12, 0);
var registry = new SimpleMeterRegistry();
var metrics = new EventDeliveryMetrics(jdbc, registry);
for (Object oldest : List.of(now.minusSeconds(45), Timestamp.valueOf(now.minusSeconds(45)))) {
Map<String, Object> row = Map.of("pending_count", 1L, "dead_count", 0L, "oldest", oldest);
when(jdbc.queryForMap(anyString(), eq("BusinessFeeSourceChanged"))).thenReturn(row);
metrics.sample(EventDeliveryMetrics.Stream.FEE, now);
assertThat(registry.get("baiyue.event.delivery.oldest.pending.seconds").gauge().value()).isEqualTo(45);
assertThat(registry.get("baiyue.event.delivery.sample.success").gauge().value()).isEqualTo(1);
}
when(jdbc.queryForMap(anyString(), eq("BusinessFeeSourceChanged")))
.thenReturn(Map.of("pending_count", 0L, "dead_count", 0L, "oldest", "not a JDBC time"));
metrics.sample(EventDeliveryMetrics.Stream.FEE, now);
assertThat(registry.get("baiyue.event.delivery.pending").gauge().value()).isEqualTo(1);
assertThat(registry.get("baiyue.event.delivery.oldest.pending.seconds").gauge().value()).isEqualTo(45);
assertThat(registry.get("baiyue.event.delivery.sample.success").gauge().value()).isZero();
}
@Test void initialFailureIsUnknownRatherThanFalseZero() {
var jdbc = new JdbcTemplate(new DriverManagerDataSource("jdbc:h2:mem:" + UUID.randomUUID(), "sa", ""));
var registry = new SimpleMeterRegistry();
new EventDeliveryMetrics(jdbc, registry).sample(EventDeliveryMetrics.Stream.FINANCE, LocalDateTime.now());
assertThat(registry.get("baiyue.event.delivery.pending").gauge().value()).isNaN();
assertThat(registry.get("baiyue.event.delivery.sample.timestamp").gauge().value()).isZero();
assertThat(registry.get("baiyue.event.delivery.sample.success").gauge().value()).isZero();
}
}