66 lines
2.8 KiB
Java
66 lines
2.8 KiB
Java
package com.baiyue.eventbridge.trace;
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import com.baiyue.common.web.CorrelationContext;
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import com.baiyue.eventbridge.domain.BridgeInbox;
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import org.junit.jupiter.api.AfterEach;
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import org.junit.jupiter.api.Test;
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import org.slf4j.MDC;
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import java.net.URI;
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import java.net.http.HttpRequest;
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import static org.assertj.core.api.Assertions.assertThat;
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class EventBridgeTracePropagationTest {
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@AfterEach
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void clearMdc() {
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MDC.clear();
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}
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@Test
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void envelopeUuidFlowsThroughMdcAndRawHttpAsAChildSpan() {
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BridgeInbox event = new BridgeInbox();
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event.setTraceId("550e8400-e29b-41d4-a716-446655440000");
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event.setCorrelationId("ORDER:customer-99:booking-123");
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event.setEventId("event-business-id");
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try (EventBridgeTraceScope ignored = EventBridgeTraceScope.open(event)) {
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String localSpan = MDC.get(CorrelationContext.SPAN_ID);
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HttpRequest.Builder builder = HttpRequest.newBuilder(URI.create("http://127.0.0.1/internal"))
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.header(CorrelationContext.REQUEST_ID_HEADER, event.getEventId())
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.header(CorrelationContext.TRACE_ID_HEADER, event.getCorrelationId())
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.header(CorrelationContext.TRACE_PARENT_HEADER,
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"00-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa-bbbbbbbbbbbbbbbb-00");
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HttpRequest request = new EventBridgeHttpTracePropagation().apply(builder).GET().build();
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assertThat(MDC.get(CorrelationContext.TRACE_ID))
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.isEqualTo("550e8400e29b41d4a716446655440000");
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assertThat(request.headers().firstValue(CorrelationContext.TRACE_ID_HEADER))
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.contains("550e8400e29b41d4a716446655440000");
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assertThat(request.headers().firstValue(CorrelationContext.REQUEST_ID_HEADER).orElseThrow())
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.matches("[0-9a-f-]{36}").isNotEqualTo(event.getEventId());
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assertThat(request.headers().firstValue(CorrelationContext.TRACE_PARENT_HEADER).orElseThrow())
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.matches("00-550e8400e29b41d4a716446655440000-[0-9a-f]{16}-01")
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.doesNotContain(localSpan);
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}
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assertThat(MDC.get(CorrelationContext.TRACE_ID)).isNull();
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}
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@Test
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void invalidLegacyEnvelopeTraceIsSafelyRebuiltAndPreviousMdcIsRestored() {
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MDC.put("existing", "preserved");
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BridgeInbox event = new BridgeInbox();
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event.setTraceId("JWT-or-business-id-value");
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try (EventBridgeTraceScope ignored = EventBridgeTraceScope.open(event)) {
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assertThat(MDC.get(CorrelationContext.TRACE_ID)).matches("[0-9a-f]{32}")
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.isNotEqualTo(event.getTraceId());
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}
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assertThat(MDC.get("existing")).isEqualTo("preserved");
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assertThat(MDC.get(CorrelationContext.TRACE_ID)).isNull();
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}
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}
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