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set root cause as the exception_name in micrometer tags (#1883)
* set root cause as the exception_name in micrometer tags * set root cause as the exception_name in other metrics system * set root cause as the exception_name in other metrics system * Update ExceptionUtilsTest.java * reformat * reformat * add root_cause_name instead of changing exception_name Co-authored-by: Marvin Froeder <velo@users.noreply.github.com>
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/* | ||
* Copyright 2012-2022 The Feign Authors | ||
* | ||
* Licensed 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 feign.utils; | ||
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import java.util.HashSet; | ||
import java.util.Set; | ||
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public class ExceptionUtils { | ||
/** | ||
* Introspects the {@link Throwable} to obtain the root cause. | ||
* | ||
* <p> | ||
* This method walks through the exception chain to the last element, "root" of the tree, using | ||
* {@link Throwable#getCause()}, and returns that exception. | ||
* | ||
* @param throwable the throwable to get the root cause for, may be null | ||
* @return the root cause of the {@link Throwable}, {@code null} if null throwable input | ||
*/ | ||
public static Throwable getRootCause(Throwable throwable) { | ||
if (throwable == null) { | ||
return null; | ||
} | ||
Throwable rootCause = throwable; | ||
// this is to avoid infinite loops for recursive cases | ||
final Set<Throwable> seenThrowables = new HashSet<>(); | ||
seenThrowables.add(rootCause); | ||
while ((rootCause.getCause() != null && !seenThrowables.contains(rootCause.getCause()))) { | ||
seenThrowables.add(rootCause.getCause()); | ||
rootCause = rootCause.getCause(); | ||
} | ||
return rootCause; | ||
} | ||
} |
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/* | ||
* Copyright 2012-2022 The Feign Authors | ||
* | ||
* Licensed 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 feign.utils; | ||
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import org.junit.Test; | ||
import static org.assertj.core.api.Assertions.assertThat; | ||
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public class ExceptionUtilsTest { | ||
@Test | ||
public void rootCauseOfNullIsNull() { | ||
Throwable e = null; | ||
Throwable rootCause = ExceptionUtils.getRootCause(e); | ||
assertThat(rootCause).isNull(); | ||
} | ||
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@Test | ||
public void rootCauseIsSelf() { | ||
Throwable e = new Exception(); | ||
Throwable rootCause = ExceptionUtils.getRootCause(e); | ||
assertThat(rootCause).isSameAs(e); | ||
} | ||
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@Test | ||
public void rootCauseIsDifferent() { | ||
Throwable rootCause = new Exception(); | ||
Throwable e = new Exception(rootCause); | ||
Throwable actualRootCause = ExceptionUtils.getRootCause(e); | ||
assertThat(actualRootCause).isSameAs(rootCause); | ||
} | ||
} |
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