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Merge pull request #11 from michaelhyatt/distributed-http-tracing-2.0
Distributed http tracing 2.0
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59 changes: 59 additions & 0 deletions
59
mule4-agent/src/main/java/co/elastic/apm/mule4/agent/tracing/HttpTracingUtils.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,59 @@ | ||
| package co.elastic.apm.mule4.agent.tracing; | ||
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| import org.mule.extension.http.api.HttpRequestAttributes; | ||
| import org.mule.runtime.api.component.ComponentIdentifier; | ||
| import org.mule.runtime.api.metadata.TypedValue; | ||
| import org.mule.runtime.api.notification.MessageProcessorNotification; | ||
| import org.mule.runtime.api.notification.PipelineMessageNotification; | ||
| import org.mule.runtime.api.util.MultiMap; | ||
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| import co.elastic.apm.api.Span; | ||
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| public class HttpTracingUtils { | ||
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| private static final String HTTP_REQUEST_NAMESPACE = "http://www.mulesoft.org/schema/mule/http"; | ||
| private static final String HTTP_REQUEST_NAME = "request"; | ||
| public static final String ELASTIC_APM_TRACEPARENT = "elastic-apm-traceparent"; | ||
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| public static boolean isHttpEvent(PipelineMessageNotification notification) { | ||
| return extractAttributes(notification).getDataType().getType() == HttpRequestAttributes.class; | ||
| } | ||
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| public static boolean hasRemoteParent(PipelineMessageNotification notification) { | ||
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| if (!isHttpEvent(notification)) | ||
| return false; | ||
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| return getHttpAttributes(notification).containsKey(ELASTIC_APM_TRACEPARENT); | ||
| } | ||
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| public static String getTracingHeaderValue(String x, PipelineMessageNotification notification) { | ||
| return getHttpAttributes(notification).get(ELASTIC_APM_TRACEPARENT); | ||
| } | ||
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| private static MultiMap<String, String> getHttpAttributes(PipelineMessageNotification notification) { | ||
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| HttpRequestAttributes attributes = (HttpRequestAttributes) extractAttributes(notification).getValue(); | ||
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| return attributes.getHeaders(); | ||
| } | ||
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| private static TypedValue<Object> extractAttributes(PipelineMessageNotification notification) { | ||
| return notification.getEvent().getMessage().getAttributes(); | ||
| } | ||
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| public static boolean isHttpRequester(MessageProcessorNotification notification) { | ||
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| ComponentIdentifier identifier = notification.getInfo().getComponent().getIdentifier(); | ||
| String name = identifier.getName(); | ||
| String namespace = identifier.getNamespaceUri(); | ||
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| return HTTP_REQUEST_NAME.equals(name) && HTTP_REQUEST_NAMESPACE.equals(namespace); | ||
| } | ||
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| public static void propagateTraceIdHeader(Span span, MessageProcessorNotification notification) { | ||
| // TODO Auto-generated method stub | ||
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| } | ||
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| } |
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81 changes: 81 additions & 0 deletions
81
mule4-agent/src/test/java/co/elastic/apm/mule4/agent/DistributedTracingTest.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,81 @@ | ||
| package co.elastic.apm.mule4.agent; | ||
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| import static org.junit.Assert.*; | ||
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| import java.util.List; | ||
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| import org.apache.http.HttpResponse; | ||
| import org.apache.http.client.HttpClient; | ||
| import org.apache.http.client.methods.HttpGet; | ||
| import org.apache.http.impl.client.HttpClientBuilder; | ||
| import org.apache.http.util.EntityUtils; | ||
| import org.junit.Test; | ||
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| import co.elastic.apm.agent.impl.transaction.Transaction; | ||
| import co.elastic.apm.mule4.agent.config.BaseAbstractApmMuleTestCase; | ||
| import co.elastic.apm.mule4.agent.tracing.HttpTracingUtils; | ||
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| public class DistributedTracingTest extends BaseAbstractApmMuleTestCase { | ||
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| private static final String TRACE_ID1 = "0af7651916cd43dd8448eb211c80319c"; | ||
| private static final String TRACE_PARENT1 = "00-" + TRACE_ID1 + "-b9c7c989f97918e1-01"; | ||
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| @Test | ||
| public void testTraceIdPropagation() throws Exception { | ||
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| HttpGet getRequest = new HttpGet("http://localhost:8998/request"); | ||
| getRequest.addHeader(HttpTracingUtils.ELASTIC_APM_TRACEPARENT, TRACE_PARENT1); | ||
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| HttpClient httpClient = HttpClientBuilder.create().build(); | ||
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| HttpResponse response = httpClient.execute(getRequest); | ||
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| assertEquals(200, response.getStatusLine().getStatusCode()); | ||
| assertEquals(TRACE_PARENT1, EntityUtils.toString(response.getEntity())); | ||
| List<Transaction> transactions = getTransactions(); | ||
| assertEquals(1, transactions.size()); | ||
| assertEquals(1, getSpans().size()); | ||
| assertEquals(TRACE_ID1, getTransaction().getTraceContext().getTraceId().toString()); | ||
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| } | ||
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| @Test | ||
| public void testNoTraceIdPropagation() throws Exception { | ||
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| HttpGet getRequest = new HttpGet("http://localhost:8998/request"); | ||
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| HttpClient httpClient = HttpClientBuilder.create().build(); | ||
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| HttpResponse response = httpClient.execute(getRequest); | ||
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| Thread.sleep(1000); | ||
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| assertEquals(200, response.getStatusLine().getStatusCode()); | ||
| assertEquals("", EntityUtils.toString(response.getEntity())); | ||
| List<Transaction> transactions = getTransactions(); | ||
| assertEquals(1, transactions.size()); | ||
| assertEquals(1, getSpans().size()); | ||
| assertNotEquals(TRACE_ID1, getTransaction().getTraceContext().getTraceId().toString()); | ||
| assertNotEquals("", getTransaction().getTraceContext().getTraceId().toString()); | ||
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| } | ||
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| @Test | ||
| public void testTraceIdPropagationThroughHttp() throws Exception { | ||
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| HttpGet getRequest = new HttpGet("http://localhost:8998"); | ||
| getRequest.addHeader(HttpTracingUtils.ELASTIC_APM_TRACEPARENT, TRACE_PARENT1); | ||
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| HttpClient httpClient = HttpClientBuilder.create().build(); | ||
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| HttpResponse response = httpClient.execute(getRequest); | ||
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| } | ||
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| @Override | ||
| protected String getConfigFile() { | ||
| return "DistributedTracingTest.xml"; | ||
| } | ||
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| } |
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