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Posted to notifications@skywalking.apache.org by wu...@apache.org on 2023/02/09 03:28:29 UTC

[skywalking-java] branch main updated: Enhance kotlin coroutine plugin for stack tracing (#451)

This is an automated email from the ASF dual-hosted git repository.

wusheng pushed a commit to branch main
in repository https://gitbox.apache.org/repos/asf/skywalking-java.git


The following commit(s) were added to refs/heads/main by this push:
     new ad1389347a Enhance kotlin coroutine plugin for stack tracing (#451)
ad1389347a is described below

commit ad1389347a714a6761efd231ea0f15b2a88e92b4
Author: Kanro <hi...@live.cn>
AuthorDate: Thu Feb 9 11:28:23 2023 +0800

    Enhance kotlin coroutine plugin for stack tracing (#451)
---
 CHANGES.md                                         |  1 +
 ...ava => DispatchedTaskExceptionInterceptor.java} | 33 ++++++---
 .../coroutine/DispatchedTaskRunInterceptor.java    | 73 ++++++++++++++++++
 .../kotlin/coroutine/DispatcherInterceptor.java    | 27 +++++--
 .../plugin/kotlin/coroutine/TracingRunnable.java   |  7 +-
 .../apm/plugin/kotlin/coroutine/Utils.java         | 65 ++++++++++++++++
 .../define/DispatchedTaskInstrumentation.java      | 86 ++++++++++++++++++++++
 .../src/main/resources/skywalking-plugin.def       |  3 +-
 .../config/expectedData.yaml                       |  2 +-
 9 files changed, 276 insertions(+), 21 deletions(-)

diff --git a/CHANGES.md b/CHANGES.md
index 0253fb8823..cb56e7f0fd 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -12,6 +12,7 @@ Release Notes.
 * Remove Powermock entirely from the test cases.
 * Fix H2 instrumentation point
 * Refactor pipeline in jedis-plugin.
+* Enhance kotlin coroutine plugin for stack tracing.
 
 #### Documentation
 * Update docs of Tracing APIs, reorganize the API docs into six parts.
diff --git a/apm-sniffer/optional-plugins/kotlin-coroutine-plugin/src/main/java/org/apache/skywalking/apm/plugin/kotlin/coroutine/DispatcherInterceptor.java b/apm-sniffer/optional-plugins/kotlin-coroutine-plugin/src/main/java/org/apache/skywalking/apm/plugin/kotlin/coroutine/DispatchedTaskExceptionInterceptor.java
similarity index 53%
copy from apm-sniffer/optional-plugins/kotlin-coroutine-plugin/src/main/java/org/apache/skywalking/apm/plugin/kotlin/coroutine/DispatcherInterceptor.java
copy to apm-sniffer/optional-plugins/kotlin-coroutine-plugin/src/main/java/org/apache/skywalking/apm/plugin/kotlin/coroutine/DispatchedTaskExceptionInterceptor.java
index 2f9348e25c..54395236c7 100644
--- a/apm-sniffer/optional-plugins/kotlin-coroutine-plugin/src/main/java/org/apache/skywalking/apm/plugin/kotlin/coroutine/DispatcherInterceptor.java
+++ b/apm-sniffer/optional-plugins/kotlin-coroutine-plugin/src/main/java/org/apache/skywalking/apm/plugin/kotlin/coroutine/DispatchedTaskExceptionInterceptor.java
@@ -18,28 +18,43 @@
 
 package org.apache.skywalking.apm.plugin.kotlin.coroutine;
 
+import org.apache.skywalking.apm.agent.core.context.ContextManager;
+import org.apache.skywalking.apm.agent.core.context.trace.AbstractSpan;
 import org.apache.skywalking.apm.agent.core.plugin.interceptor.enhance.EnhancedInstance;
 import org.apache.skywalking.apm.agent.core.plugin.interceptor.enhance.InstanceMethodsAroundInterceptor;
 import org.apache.skywalking.apm.agent.core.plugin.interceptor.enhance.MethodInterceptResult;
 
 import java.lang.reflect.Method;
+import java.util.HashMap;
+import java.util.Map;
+
+public class DispatchedTaskExceptionInterceptor implements InstanceMethodsAroundInterceptor {
 
-public class DispatcherInterceptor implements InstanceMethodsAroundInterceptor {
     @Override
-    public void beforeMethod(EnhancedInstance objInst, Method method, Object[] allArguments, Class<?>[] argumentsTypes,
-        MethodInterceptResult result) {
-        // Wrapping runnable with current context snapshot
-        allArguments[1] = TracingRunnable.wrapOrNot((Runnable) allArguments[1]);
+    public void beforeMethod(EnhancedInstance objInst, Method method, Object[] allArguments, Class<?>[] argumentsTypes, MethodInterceptResult result) {
     }
 
     @Override
-    public Object afterMethod(EnhancedInstance objInst, Method method, Object[] allArguments, Class<?>[] argumentsTypes,
-        Object ret) {
+    public Object afterMethod(EnhancedInstance objInst, Method method, Object[] allArguments, Class<?>[] argumentsTypes, Object ret) {
+        if (!(ret instanceof Throwable)) return ret;
+        Throwable exception = (Throwable) ret;
+
+        if (ContextManager.isActive() && objInst.getSkyWalkingDynamicField() instanceof AbstractSpan) {
+            AbstractSpan span = (AbstractSpan) objInst.getSkyWalkingDynamicField();
+            String[] elements = Utils.getCoroutineStackTraceElements(objInst);
+            if (elements.length > 0) {
+                Map<String, String> eventMap = new HashMap<>();
+                eventMap.put("coroutine.stack", String.join("\n", elements));
+                span.log(System.currentTimeMillis(), eventMap);
+            }
+
+            objInst.setSkyWalkingDynamicField(exception);
+            span.errorOccurred().log(exception);
+        }
         return ret;
     }
 
     @Override
-    public void handleMethodException(EnhancedInstance objInst, Method method, Object[] allArguments,
-        Class<?>[] argumentsTypes, Throwable t) {
+    public void handleMethodException(EnhancedInstance objInst, Method method, Object[] allArguments, Class<?>[] argumentsTypes, Throwable t) {
     }
 }
diff --git a/apm-sniffer/optional-plugins/kotlin-coroutine-plugin/src/main/java/org/apache/skywalking/apm/plugin/kotlin/coroutine/DispatchedTaskRunInterceptor.java b/apm-sniffer/optional-plugins/kotlin-coroutine-plugin/src/main/java/org/apache/skywalking/apm/plugin/kotlin/coroutine/DispatchedTaskRunInterceptor.java
new file mode 100644
index 0000000000..83c4d312c8
--- /dev/null
+++ b/apm-sniffer/optional-plugins/kotlin-coroutine-plugin/src/main/java/org/apache/skywalking/apm/plugin/kotlin/coroutine/DispatchedTaskRunInterceptor.java
@@ -0,0 +1,73 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package org.apache.skywalking.apm.plugin.kotlin.coroutine;
+
+import org.apache.skywalking.apm.agent.core.context.ContextManager;
+import org.apache.skywalking.apm.agent.core.context.ContextSnapshot;
+import org.apache.skywalking.apm.agent.core.context.trace.AbstractSpan;
+import org.apache.skywalking.apm.agent.core.plugin.interceptor.enhance.EnhancedInstance;
+import org.apache.skywalking.apm.agent.core.plugin.interceptor.enhance.InstanceMethodsAroundInterceptor;
+import org.apache.skywalking.apm.agent.core.plugin.interceptor.enhance.MethodInterceptResult;
+import org.apache.skywalking.apm.network.trace.component.ComponentsDefine;
+
+import java.lang.reflect.Method;
+
+public class DispatchedTaskRunInterceptor implements InstanceMethodsAroundInterceptor {
+
+    @Override
+    public void beforeMethod(EnhancedInstance objInst, Method method, Object[] allArguments, Class<?>[] argumentsTypes, MethodInterceptResult result) {
+        if (objInst.getSkyWalkingDynamicField() instanceof ContextSnapshot) {
+            ContextSnapshot snapshot = (ContextSnapshot) objInst.getSkyWalkingDynamicField();
+
+            if (ContextManager.isActive() && snapshot.isFromCurrent()) {
+                // Thread not switched, skip restore snapshot.
+                return;
+            }
+
+            // Create local coroutine span
+            AbstractSpan span = ContextManager.createLocalSpan(TracingRunnable.COROUTINE);
+            span.setComponent(ComponentsDefine.KT_COROUTINE);
+            objInst.setSkyWalkingDynamicField(span);
+
+            // Recover with snapshot
+            ContextManager.continued(snapshot);
+        }
+    }
+
+    @Override
+    public Object afterMethod(EnhancedInstance objInst, Method method, Object[] allArguments, Class<?>[] argumentsTypes, Object ret) {
+        if (ContextManager.isActive() && objInst.getSkyWalkingDynamicField() instanceof AbstractSpan) {
+            AbstractSpan span = (AbstractSpan) objInst.getSkyWalkingDynamicField();
+            if (span != null) {
+                ContextManager.stopSpan(span);
+            }
+        }
+        return ret;
+    }
+
+    @Override
+    public void handleMethodException(EnhancedInstance objInst, Method method, Object[] allArguments, Class<?>[] argumentsTypes, Throwable t) {
+        if (ContextManager.isActive() && objInst.getSkyWalkingDynamicField() instanceof AbstractSpan) {
+            AbstractSpan span = (AbstractSpan) objInst.getSkyWalkingDynamicField();
+            if (span != null) {
+                ContextManager.stopSpan(span.errorOccurred().log(t));
+            }
+        }
+    }
+}
diff --git a/apm-sniffer/optional-plugins/kotlin-coroutine-plugin/src/main/java/org/apache/skywalking/apm/plugin/kotlin/coroutine/DispatcherInterceptor.java b/apm-sniffer/optional-plugins/kotlin-coroutine-plugin/src/main/java/org/apache/skywalking/apm/plugin/kotlin/coroutine/DispatcherInterceptor.java
index 2f9348e25c..cc31f47e89 100644
--- a/apm-sniffer/optional-plugins/kotlin-coroutine-plugin/src/main/java/org/apache/skywalking/apm/plugin/kotlin/coroutine/DispatcherInterceptor.java
+++ b/apm-sniffer/optional-plugins/kotlin-coroutine-plugin/src/main/java/org/apache/skywalking/apm/plugin/kotlin/coroutine/DispatcherInterceptor.java
@@ -18,6 +18,7 @@
 
 package org.apache.skywalking.apm.plugin.kotlin.coroutine;
 
+import org.apache.skywalking.apm.agent.core.context.ContextManager;
 import org.apache.skywalking.apm.agent.core.plugin.interceptor.enhance.EnhancedInstance;
 import org.apache.skywalking.apm.agent.core.plugin.interceptor.enhance.InstanceMethodsAroundInterceptor;
 import org.apache.skywalking.apm.agent.core.plugin.interceptor.enhance.MethodInterceptResult;
@@ -25,21 +26,31 @@ import org.apache.skywalking.apm.agent.core.plugin.interceptor.enhance.MethodInt
 import java.lang.reflect.Method;
 
 public class DispatcherInterceptor implements InstanceMethodsAroundInterceptor {
+
     @Override
-    public void beforeMethod(EnhancedInstance objInst, Method method, Object[] allArguments, Class<?>[] argumentsTypes,
-        MethodInterceptResult result) {
-        // Wrapping runnable with current context snapshot
-        allArguments[1] = TracingRunnable.wrapOrNot((Runnable) allArguments[1]);
+    public void beforeMethod(EnhancedInstance objInst, Method method, Object[] allArguments, Class<?>[] argumentsTypes, MethodInterceptResult result) {
+        if (!ContextManager.isActive()) {
+            return;
+        }
+
+        Runnable runnable = (Runnable) allArguments[1];
+
+        if (Utils.isDispatchedTask(runnable)) {
+            // Using instrumentation for DispatchedContinuation
+            EnhancedInstance enhancedRunnable = (EnhancedInstance) runnable;
+            enhancedRunnable.setSkyWalkingDynamicField(ContextManager.capture());
+        } else {
+            // Wrapping runnable with current context snapshot
+            allArguments[1] = TracingRunnable.wrapOrNot(runnable);
+        }
     }
 
     @Override
-    public Object afterMethod(EnhancedInstance objInst, Method method, Object[] allArguments, Class<?>[] argumentsTypes,
-        Object ret) {
+    public Object afterMethod(EnhancedInstance objInst, Method method, Object[] allArguments, Class<?>[] argumentsTypes, Object ret) {
         return ret;
     }
 
     @Override
-    public void handleMethodException(EnhancedInstance objInst, Method method, Object[] allArguments,
-        Class<?>[] argumentsTypes, Throwable t) {
+    public void handleMethodException(EnhancedInstance objInst, Method method, Object[] allArguments, Class<?>[] argumentsTypes, Throwable t) {
     }
 }
diff --git a/apm-sniffer/optional-plugins/kotlin-coroutine-plugin/src/main/java/org/apache/skywalking/apm/plugin/kotlin/coroutine/TracingRunnable.java b/apm-sniffer/optional-plugins/kotlin-coroutine-plugin/src/main/java/org/apache/skywalking/apm/plugin/kotlin/coroutine/TracingRunnable.java
index 9d23f5e6dc..8fb09e9a16 100644
--- a/apm-sniffer/optional-plugins/kotlin-coroutine-plugin/src/main/java/org/apache/skywalking/apm/plugin/kotlin/coroutine/TracingRunnable.java
+++ b/apm-sniffer/optional-plugins/kotlin-coroutine-plugin/src/main/java/org/apache/skywalking/apm/plugin/kotlin/coroutine/TracingRunnable.java
@@ -30,7 +30,7 @@ import org.apache.skywalking.apm.network.trace.component.ComponentsDefine;
  * A class implementation will be cheaper cost than lambda with captured variables implementation.
  */
 class TracingRunnable implements Runnable {
-    private static final String COROUTINE = "/Kotlin/Coroutine";
+    public static final String COROUTINE = "Kotlin/Coroutine";
 
     private ContextSnapshot snapshot;
     private Runnable delegate;
@@ -48,7 +48,7 @@ class TracingRunnable implements Runnable {
      */
     public static Runnable wrapOrNot(Runnable delegate) {
         // Just wrap continuation with active trace context
-        if (ContextManager.isActive()) {
+        if (ContextManager.isActive() && !(delegate instanceof TracingRunnable)) {
             return new TracingRunnable(ContextManager.capture(), delegate);
         } else {
             return delegate;
@@ -72,6 +72,9 @@ class TracingRunnable implements Runnable {
 
         try {
             delegate.run();
+        } catch (Throwable e) {
+            span.errorOccurred().log(e);
+            throw e;
         } finally {
             ContextManager.stopSpan(span);
         }
diff --git a/apm-sniffer/optional-plugins/kotlin-coroutine-plugin/src/main/java/org/apache/skywalking/apm/plugin/kotlin/coroutine/Utils.java b/apm-sniffer/optional-plugins/kotlin-coroutine-plugin/src/main/java/org/apache/skywalking/apm/plugin/kotlin/coroutine/Utils.java
new file mode 100644
index 0000000000..6698b63ae1
--- /dev/null
+++ b/apm-sniffer/optional-plugins/kotlin-coroutine-plugin/src/main/java/org/apache/skywalking/apm/plugin/kotlin/coroutine/Utils.java
@@ -0,0 +1,65 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package org.apache.skywalking.apm.plugin.kotlin.coroutine;
+
+import kotlin.coroutines.jvm.internal.CoroutineStackFrame;
+import org.apache.skywalking.apm.plugin.kotlin.coroutine.define.DispatchedTaskInstrumentation;
+
+import java.util.ArrayList;
+
+public class Utils {
+    private static Class<?> DISPATCHED_TASK_CLASS = null;
+    private static Boolean IS_DISPATCHED_TASK_CLASS_LOADED = false;
+
+    private static void loadDispatchedTaskClass() {
+        if (IS_DISPATCHED_TASK_CLASS_LOADED) return;
+        try {
+            DISPATCHED_TASK_CLASS = Class.forName(DispatchedTaskInstrumentation.ENHANCE_CLASS);
+        } catch (ClassNotFoundException ignored) {
+        } finally {
+            IS_DISPATCHED_TASK_CLASS_LOADED = true;
+        }
+    }
+
+    public static boolean isDispatchedTask(Runnable runnable) {
+        loadDispatchedTaskClass();
+        if (DISPATCHED_TASK_CLASS == null) return false;
+        return DISPATCHED_TASK_CLASS.isAssignableFrom(runnable.getClass());
+    }
+
+    public static String[] getCoroutineStackTraceElements(Object runnable) {
+        if (!(runnable instanceof CoroutineStackFrame)) {
+            return new String[0];
+        }
+
+        ArrayList<String> elements = new ArrayList<>();
+        CoroutineStackFrame frame = (CoroutineStackFrame) runnable;
+        while (frame != null) {
+            StackTraceElement element = frame.getStackTraceElement();
+            frame = frame.getCallerFrame();
+
+            if (element != null) {
+                elements.add(element.toString());
+            } else {
+                elements.add("Unknown Source");
+            }
+        }
+        return elements.toArray(new String[0]);
+    }
+}
diff --git a/apm-sniffer/optional-plugins/kotlin-coroutine-plugin/src/main/java/org/apache/skywalking/apm/plugin/kotlin/coroutine/define/DispatchedTaskInstrumentation.java b/apm-sniffer/optional-plugins/kotlin-coroutine-plugin/src/main/java/org/apache/skywalking/apm/plugin/kotlin/coroutine/define/DispatchedTaskInstrumentation.java
new file mode 100644
index 0000000000..62177e2c68
--- /dev/null
+++ b/apm-sniffer/optional-plugins/kotlin-coroutine-plugin/src/main/java/org/apache/skywalking/apm/plugin/kotlin/coroutine/define/DispatchedTaskInstrumentation.java
@@ -0,0 +1,86 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package org.apache.skywalking.apm.plugin.kotlin.coroutine.define;
+
+import net.bytebuddy.description.method.MethodDescription;
+import net.bytebuddy.matcher.ElementMatcher;
+import org.apache.skywalking.apm.agent.core.plugin.interceptor.ConstructorInterceptPoint;
+import org.apache.skywalking.apm.agent.core.plugin.interceptor.InstanceMethodsInterceptPoint;
+import org.apache.skywalking.apm.agent.core.plugin.interceptor.enhance.ClassInstanceMethodsEnhancePluginDefine;
+import org.apache.skywalking.apm.agent.core.plugin.match.ClassMatch;
+
+import static net.bytebuddy.matcher.ElementMatchers.named;
+import static net.bytebuddy.matcher.ElementMatchers.takesNoArguments;
+import static org.apache.skywalking.apm.agent.core.plugin.match.NameMatch.byName;
+
+public class DispatchedTaskInstrumentation extends ClassInstanceMethodsEnhancePluginDefine {
+    public static final String ENHANCE_CLASS = "kotlinx.coroutines.DispatchedTask";
+    public static final String RUN_INTERCEPTOR_CLASS = "org.apache.skywalking.apm.plugin.kotlin.coroutine.DispatchedTaskRunInterceptor";
+    public static final String ENHANCE_METHOD_RUN = "run";
+    public static final String EXCEPTION_INTERCEPTOR_CLASS = "org.apache.skywalking.apm.plugin.kotlin.coroutine.DispatchedTaskExceptionInterceptor";
+    public static final String ENHANCE_METHOD_GET_EXCEPTIONAL_RESULT = "getExceptionalResult$kotlinx_coroutines_core";
+
+    @Override
+    protected ClassMatch enhanceClass() {
+        return byName(ENHANCE_CLASS);
+    }
+
+    @Override
+    public ConstructorInterceptPoint[] getConstructorsInterceptPoints() {
+        return new ConstructorInterceptPoint[0];
+    }
+
+    @Override
+    public InstanceMethodsInterceptPoint[] getInstanceMethodsInterceptPoints() {
+        return new InstanceMethodsInterceptPoint[]{
+                new InstanceMethodsInterceptPoint() {
+                    @Override
+                    public ElementMatcher<MethodDescription> getMethodsMatcher() {
+                        return named(ENHANCE_METHOD_RUN).and(takesNoArguments());
+                    }
+
+                    @Override
+                    public String getMethodsInterceptor() {
+                        return RUN_INTERCEPTOR_CLASS;
+                    }
+
+                    @Override
+                    public boolean isOverrideArgs() {
+                        return true;
+                    }
+                },
+                new InstanceMethodsInterceptPoint() {
+                    @Override
+                    public ElementMatcher<MethodDescription> getMethodsMatcher() {
+                        return named(ENHANCE_METHOD_GET_EXCEPTIONAL_RESULT);
+                    }
+
+                    @Override
+                    public String getMethodsInterceptor() {
+                        return EXCEPTION_INTERCEPTOR_CLASS;
+                    }
+
+                    @Override
+                    public boolean isOverrideArgs() {
+                        return false;
+                    }
+                }
+        };
+    }
+}
diff --git a/apm-sniffer/optional-plugins/kotlin-coroutine-plugin/src/main/resources/skywalking-plugin.def b/apm-sniffer/optional-plugins/kotlin-coroutine-plugin/src/main/resources/skywalking-plugin.def
index a9d7b1bc82..1cb46e0789 100644
--- a/apm-sniffer/optional-plugins/kotlin-coroutine-plugin/src/main/resources/skywalking-plugin.def
+++ b/apm-sniffer/optional-plugins/kotlin-coroutine-plugin/src/main/resources/skywalking-plugin.def
@@ -14,4 +14,5 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-kotlin-coroutine=org.apache.skywalking.apm.plugin.kotlin.coroutine.define.DispatcherInstrumentation
\ No newline at end of file
+kotlin-coroutine=org.apache.skywalking.apm.plugin.kotlin.coroutine.define.DispatcherInstrumentation
+kotlin-coroutine=org.apache.skywalking.apm.plugin.kotlin.coroutine.define.DispatchedTaskInstrumentation
\ No newline at end of file
diff --git a/test/plugin/scenarios/kotlin-coroutine-scenario/config/expectedData.yaml b/test/plugin/scenarios/kotlin-coroutine-scenario/config/expectedData.yaml
index d0cb831780..62646ffe08 100644
--- a/test/plugin/scenarios/kotlin-coroutine-scenario/config/expectedData.yaml
+++ b/test/plugin/scenarios/kotlin-coroutine-scenario/config/expectedData.yaml
@@ -49,7 +49,7 @@ segmentItems:
       - {key: db.instance, value: demo}
       - {key: db.statement, value: ''}
       skipAnalysis: 'false'
-    - operationName: /Kotlin/Coroutine
+    - operationName: Kotlin/Coroutine
       parentSpanId: -1
       spanId: 0
       startTime: nq 0