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...boot/src/main/java/org/springframework/boot/logging/logback/ApplicationNameConverter.java
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/* | ||
* Copyright 2012-2024 the original author or 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 | ||
* | ||
* https://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. | ||
*/ | ||
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package org.springframework.boot.logging.logback; | ||
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import ch.qos.logback.classic.pattern.ClassicConverter; | ||
import ch.qos.logback.classic.pattern.PropertyConverter; | ||
import ch.qos.logback.classic.spi.ILoggingEvent; | ||
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import org.springframework.boot.logging.LoggingSystemProperty; | ||
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/** | ||
* Logback {@link ClassicConverter} to convert the | ||
* {@link LoggingSystemProperty#APPLICATION_NAME APPLICATION_NAME} into a value suitable | ||
* for logging. Similar to Logback's {@link PropertyConverter} but a non-existent property | ||
* is logged as an empty string rather than {@code null}. | ||
* | ||
* @author Andy Wilkinson | ||
* @since 3.2.4 | ||
*/ | ||
public class ApplicationNameConverter extends ClassicConverter { | ||
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@Override | ||
public String convert(ILoggingEvent event) { | ||
String applicationName = event.getLoggerContextVO() | ||
.getPropertyMap() | ||
.get(LoggingSystemProperty.APPLICATION_NAME.getEnvironmentVariableName()); | ||
if (applicationName == null) { | ||
applicationName = System.getProperty(LoggingSystemProperty.APPLICATION_NAME.getEnvironmentVariableName()); | ||
if (applicationName == null) { | ||
applicationName = ""; | ||
} | ||
} | ||
return applicationName; | ||
} | ||
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} |
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81
...src/test/java/org/springframework/boot/logging/logback/ApplicationNameConverterTests.java
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/* | ||
* Copyright 2012-2024 the original author or 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 | ||
* | ||
* https://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. | ||
*/ | ||
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package org.springframework.boot.logging.logback; | ||
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import java.util.Collections; | ||
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import ch.qos.logback.classic.LoggerContext; | ||
import ch.qos.logback.classic.spi.LoggerContextVO; | ||
import ch.qos.logback.classic.spi.LoggingEvent; | ||
import org.junit.jupiter.api.Test; | ||
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import org.springframework.boot.logging.LoggingSystemProperty; | ||
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import static org.assertj.core.api.Assertions.assertThat; | ||
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/** | ||
* Tests for {@link ApplicationNameConverter}. | ||
* | ||
* @author Andy Wilkinson | ||
*/ | ||
class ApplicationNameConverterTests { | ||
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private final ApplicationNameConverter converter; | ||
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private final LoggingEvent event = new LoggingEvent(); | ||
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ApplicationNameConverterTests() { | ||
this.converter = new ApplicationNameConverter(); | ||
this.converter.setContext(new LoggerContext()); | ||
this.event.setLoggerContextRemoteView( | ||
new LoggerContextVO("test", Collections.emptyMap(), System.currentTimeMillis())); | ||
} | ||
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@Test | ||
void whenNoLoggedApplicationNameConvertReturnsEmptyString() { | ||
withLoggedApplicationName(null, () -> { | ||
this.converter.start(); | ||
String converted = this.converter.convert(this.event); | ||
assertThat(converted).isEqualTo(""); | ||
}); | ||
} | ||
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@Test | ||
void whenLoggedApplicationNameConvertReturnsIt() { | ||
withLoggedApplicationName("my-application", () -> { | ||
this.converter.start(); | ||
String converted = this.converter.convert(this.event); | ||
assertThat(converted).isEqualTo("my-application"); | ||
}); | ||
} | ||
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private void withLoggedApplicationName(String name, Runnable action) { | ||
if (name == null) { | ||
System.clearProperty(LoggingSystemProperty.APPLICATION_NAME.getEnvironmentVariableName()); | ||
} | ||
else { | ||
System.setProperty(LoggingSystemProperty.APPLICATION_NAME.getEnvironmentVariableName(), name); | ||
} | ||
try { | ||
action.run(); | ||
} | ||
finally { | ||
System.clearProperty(LoggingSystemProperty.APPLICATION_NAME.getEnvironmentVariableName()); | ||
} | ||
} | ||
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} |
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