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technoddy 2024-03-17 20:58:11 -04:00
parent 3563a3e35a
commit 329a01ec93
10 changed files with 5 additions and 233 deletions
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1
logging-modules/loki-logback/README.md
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### Relevant Articles:

65
logging-modules/loki-logback/pom.xml
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<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<artifactId>logback</artifactId>
<version>0.1-SNAPSHOT</version>
<name>logback</name>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>3.2.0</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<dependencies>
<dependency>
<groupId>com.github.loki4j</groupId>
<artifactId>loki-logback-appender</artifactId>
<version>${loki-logback.version}</version>
</dependency>
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-core</artifactId>
<version>${mockito.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.junit</groupId>
<artifactId>junit-bom</artifactId>
<version>${junit-jupiter.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>${slf4j.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
</dependencies>
<properties>
<logback.contrib.version>0.1.5</logback.contrib.version>
<loki-logback.version>1.4.2</loki-logback.version>
<slf4j.version>2.0.4</slf4j.version>
<lombok.version>1.18.22</lombok.version>
<mockito.version>5.6.0</mockito.version>
</properties>
</project>

15
logging-modules/loki-logback/src/main/java/com/baeldung/loki/DemoService.java
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package com.baeldung.loki;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Service;
@Service
public class DemoService {
private final Logger LOG = LoggerFactory.getLogger(DemoService.class);
public void log() {
LOG.info("DemoService.log invoked");
}
}

55
logging-modules/loki-logback/src/main/resources/logback-spring.xml
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<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<springProperty name="name" source="spring.application.name"/>
<appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<pattern>
{
"level":"%level",
"class":"%logger{36}",
"thread":"%thread",
"message": "%message",
"requestId": "%X{X-Request-ID}"
}
</pattern>
<!-- <pattern>-->
<!-- %d{HH:mm:ss.SSS} %-5level %logger{36} %X{X-Request-ID} - %msg%n-->
<!-- </pattern>-->
</encoder>
</appender>
<appender name="LOKI" class="com.github.loki4j.logback.Loki4jAppender">
<!-- (1) -->
<http>
<url>http://localhost:3100/loki/api/v1/push</url>
</http>
<format>
<!-- (2) -->
<label>
<pattern>app=${name},host=${HOSTNAME},level=%level</pattern>
<!-- (3) -->
<readMarkers>true</readMarkers>
</label>
<message>
<!-- (4) -->
<pattern>
{
"level":"%level",
"class":"%logger{36}",
"thread":"%thread",
"message": "%message",
"requestId": "%X{X-Request-ID}"
}
</pattern>
</message>
</format>
</appender>
<root level="INFO">
<appender-ref ref="CONSOLE"/>
<appender-ref ref="LOKI"/>
</root>
</configuration>

49
logging-modules/loki-logback/src/test/java/com/baeldung/loki/DemoServiceTest.java
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package com.baeldung.loki;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;
import java.text.ParseException;
import java.util.List;
import org.junit.jupiter.api.Test;
import org.mockito.ArgumentCaptor;
import org.mockito.Captor;
import org.mockito.Mock;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import ch.qos.logback.classic.Level;
import ch.qos.logback.classic.spi.ILoggingEvent;
import ch.qos.logback.core.Appender;
import org.springframework.boot.test.context.SpringBootTest;
@SpringBootTest(classes = DemoService.class)
public class DemoServiceTest {
@Mock
Appender<ILoggingEvent> appender;
@Captor
ArgumentCaptor<ILoggingEvent> captor;
@Test
public void givenLokiAppender_whenSampleServiceInvoked_ThenCaptureInfoLog() throws ParseException {
ch.qos.logback.classic.Logger logger = (ch.qos.logback.classic.Logger) LoggerFactory.getLogger(Logger.ROOT_LOGGER_NAME);
when(appender.getName()).thenReturn("loki-logback-appender");
logger.addAppender(appender);
DemoService service = new DemoService();
service.log();
verify(appender, times(1)).doAppend(captor.capture());
List<ILoggingEvent> allValues = captor.getAllValues();
assertEquals(1, allValues.size());
ILoggingEvent event = allValues.get(0);
assertEquals(event.getLevel(), Level.INFO);
assertEquals("DemoService.log invoked", event.getFormattedMessage());
}
}

6
spring-boot-modules/spring-boot-logging-loki/pom.xml
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<groupId>org.springframework.boot</groupId> <groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId> <artifactId>spring-boot-starter-web</artifactId>
</dependency> </dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
</dependencies> </dependencies>
<properties> <properties>

2
spring-boot-modules/spring-boot-logging-loki/src/main/java/com/baeldung/loki/DemoService.java
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@ -10,6 +10,6 @@ public class DemoService {
private final Logger LOG = LoggerFactory.getLogger(DemoService.class); private final Logger LOG = LoggerFactory.getLogger(DemoService.class);
public void log() { public void log() {
LOG.info("DemoService.log invoked!!!"); LOG.info("DemoService.log invoked");
} }
} }

22
spring-boot-modules/spring-boot-logging-loki/src/main/java/com/baeldung/loki/SpringBootLogbackExtensionsApplication.java
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package com.baeldung.extensions;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class SpringBootLogbackExtensionsApplication {
private static final Logger logger = LoggerFactory.getLogger(SpringBootLogbackExtensionsApplication.class);
public static void main(String[] args) {
SpringApplication.run(SpringBootLogbackExtensionsApplication.class, args);
logger.debug("Debug log message");
logger.info("Info log message");
logger.error("Error log message");
logger.warn("Warn log message");
logger.trace("Trace log message");
}
}

16
spring-boot-modules/spring-boot-logging-loki/src/main/resources/logback-spring.xml
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@ -2,21 +2,6 @@
<configuration> <configuration>
<springProperty name="name" source="spring.application.name"/> <springProperty name="name" source="spring.application.name"/>
<appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<pattern>
{
"level":"%level",
"class":"%logger{36}",
"thread":"%thread",
"message": "%message",
"requestId": "%X{X-Request-ID}"
}
</pattern>
</encoder>
</appender>
<appender name="LOKI" class="com.github.loki4j.logback.Loki4jAppender"> <appender name="LOKI" class="com.github.loki4j.logback.Loki4jAppender">
<http> <http>
<url>http://localhost:3100/loki/api/v1/push</url> <url>http://localhost:3100/loki/api/v1/push</url>
@ -41,7 +26,6 @@
</appender> </appender>
<root level="INFO"> <root level="INFO">
<appender-ref ref="CONSOLE"/>
<appender-ref ref="LOKI"/> <appender-ref ref="LOKI"/>
</root> </root>

7
spring-boot-modules/spring-boot-logging-loki/src/test/java/com/baeldung/loki/DemoServiceLiveTest.java
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@ -37,17 +37,18 @@ public class DemoServiceLiveTest {
service.log(); service.log();
Thread.sleep(2000); Thread.sleep(2000);
String baseUrl = "http://localhost:3100/loki/api/v1/query_range"; String baseUrl = "http://localhost:3100/loki/api/v1/query_range";
// Set up query parameters // Set up query parameters
HttpHeaders headers = new HttpHeaders(); HttpHeaders headers = new HttpHeaders();
headers.setContentType(MediaType.APPLICATION_JSON); headers.setContentType(MediaType.APPLICATION_JSON);
String query = "{level=\"INFO\"} |= `DemoService.log invoked!!!`"; String query = "{level=\"INFO\"} |= `DemoService.log invoked`";
// Get current time in UTC // Get current time in UTC
LocalDateTime currentDateTime = LocalDateTime.now(ZoneOffset.UTC); LocalDateTime currentDateTime = LocalDateTime.now(ZoneOffset.UTC);
String current_time_est = currentDateTime.format(DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss'Z'")); String current_time_est = currentDateTime.format(DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss'Z'"));
LocalDateTime tenMinsAgo = currentDateTime.minusMinutes(10); LocalDateTime tenMinsAgo = currentDateTime.minusMinutes(10);
String start_time_est = tenMinsAgo.format(DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss'Z'")); String start_time_est = tenMinsAgo.format(DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss'Z'"));
System.out.println(start_time_est);
URI uri = UriComponentsBuilder.fromUriString(baseUrl) URI uri = UriComponentsBuilder.fromUriString(baseUrl)
.queryParam("query", query) .queryParam("query", query)
@ -80,7 +81,7 @@ public class DemoServiceLiveTest {
System.out.println("Error: " + response.getStatusCodeValue()); System.out.println("Error: " + response.getStatusCodeValue());
} }
String expected = "DemoService.log invoked!!!"; String expected = "DemoService.log invoked";
assertTrue(messages.stream().anyMatch(e -> e.contains(expected))); assertTrue(messages.stream().anyMatch(e -> e.contains(expected)));
} }
} }