Dropwizard: java.lang.IllegalStateException: Unable to acquire the logger context
Question
I have a project which is having multiple modules within it. One of the module, say "main", is having my service class, "MyService.class". Dropwizard has a jar - dropwizard-core. I want this jar in more than one module, so I was thinking of keeping its dependency in parent POM. By doing that, while running my dropwizard service file, I am encountering an exception as follows:
SLF4J: Class path contains multiple SLF4J bindings.<br>
SLF4J: Found binding in [jar:file:/home/username/.m2/repository/org/slf4j/slf4j-simple/1.7.12/slf4j-simple-1.7.12.jar!/org/slf4j/impl/StaticLoggerBinder.class]<br>
SLF4J: Found binding in [jar:file:/home/username/.m2/repository/ch/qos/logback/logback-classic/1.1.3/logback-classic-1.1.3.jar!/org/slf4j/impl/StaticLoggerBinder.class]<br>
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.<br>
SLF4J: Actual binding is of type [org.slf4j.impl.SimpleLoggerFactory]<br><br>
Exception in thread "main" java.lang.IllegalStateException: Unable to acquire the logger context
at io.dropwizard.logging.LoggingUtil.getLoggerContext(LoggingUtil.java:46)
at io.dropwizard.logging.BootstrapLogging.bootstrap(BootstrapLogging.java:45)
at io.dropwizard.logging.BootstrapLogging.bootstrap(BootstrapLogging.java:34)
at io.dropwizard.Application.<init>(Application.java:24)
at my.project.package.MyService.<init>(MyService.java:31)
at my.project.package.MyService.main(MyService.java:38)
This project runs perfectly fine if I put the dependency in the POM of "main" module.
Dropwizard is binding with wrong logger and that is the reason behind this exception. But this binding happens in the background and I have no control over it.
I am also sharing the dependency tree for both the scenarios.
Case 1 : When dropwizard-core is in child POM (main module) :
my.groupId.myProject:myProject-main:jar:1.0-SNAPSHOT<br>
[INFO] +- io.dropwizard:dropwizard-core:jar:0.9.2:compile<br>
[INFO] | +- io.dropwizard:dropwizard-util:jar:0.9.2:compile<br>
[INFO] | | +- com.fasterxml.jackson.core:jackson-annotations:jar:2.6.0:compile<br>
[INFO] | | +- com.google.guava:guava:jar:18.0:compile<br>
[INFO] | | +- com.google.code.findbugs:jsr305:jar:3.0.1:compile<br>
[INFO] | | \- joda-time:joda-time:jar:2.9:compile<br>
[INFO] | +- io.dropwizard:dropwizard-jackson:jar:0.9.2:compile<br>
[INFO] | | +- com.fasterxml.jackson.core:jackson-core:jar:2.6.3:compile<br>
[INFO] | | +- com.fasterxml.jackson.core:jackson-databind:jar:2.6.3:compile<br>
[INFO] | | +- com.fasterxml.jackson.datatype:jackson-datatype-jdk7:jar:2.6.3:compile<br>
[INFO] | | +- com.fasterxml.jackson.datatype:jackson-datatype-guava:jar:2.6.3:compile<br>
[INFO] | | +- com.fasterxml.jackson.module:jackson-module-afterburner:jar:2.6.3:compile<br>
[INFO] | | +- com.fasterxml.jackson.datatype:jackson-datatype-joda:jar:2.6.3:compile<br>
[INFO] | | +- org.slf4j:slf4j-api:jar:1.7.12:compile<br>
[INFO] | | \- ch.qos.logback:logback-classic:jar:1.1.3:compile<br>
[INFO] | +- io.dropwizard:dropwizard-validation:jar:0.9.2:compile<br>
[INFO] | | +- org.hibernate:hibernate-validator:jar:5.2.2.Final:compile<br>
[INFO] | | | +- javax.validation:validation-api:jar:1.1.0.Final:compile<br>
[INFO] | | | +- org.jboss.logging:jboss-logging:jar:3.2.1.Final:compile<br>
[INFO] | | | \- com.fasterxml:classmate:jar:1.1.0:compile<br>
[INFO] | | \- org.glassfish:javax.el:jar:3.0.0:compile<br>
[INFO] | +- io.dropwizard:dropwizard-configuration:jar:0.9.2:compile<br>
[INFO] | | +- com.fasterxml.jackson.dataformat:jackson-dataformat-yaml:jar:2.6.3:compile<br>
[INFO] | | | \- org.yaml:snakeyaml:jar:1.15:compile<br>
[INFO] | | \- org.apache.commons:commons-lang3:jar:3.4:compile<br>
[INFO] | +- io.dropwizard:dropwizard-logging:jar:0.9.2:compile<br>
[INFO] | | +- io.dropwizard.metrics:metrics-logback:jar:3.1.2:compile<br>
[INFO] | | +- org.slf4j:jul-to-slf4j:jar:1.7.12:compile<br><br>
[INFO] | | +- ch.qos.logback:logback-core:jar:1.1.3:compile<br>
[INFO] | | +- org.slf4j:log4j-over-slf4j:jar:1.7.12:compile<br>
[INFO] | | +- org.slf4j:jcl-over-slf4j:jar:1.7.12:compile<br>
[INFO] | | \- org.eclipse.jetty:jetty-util:jar:9.2.13.v20150730:compile<br>
[INFO] | +- io.dropwizard:dropwizard-metrics:jar:0.9.2:compile<br>
[INFO] | +- io.dropwizard:dropwizard-jersey:jar:0.9.2:compile<br>
[INFO] | | +- org.glassfish.jersey.core:jersey-server:jar:2.22.1:compile<br>
[INFO] | | | +- org.glassfish.jersey.core:jersey-common:jar:2.22.1:compile<br>
[INFO] | | | | +- org.glassfish.jersey.bundles.repackaged:jersey-guava:jar:2.22.1:compile<br>
[INFO] | | | | \- org.glassfish.hk2:osgi-resource-locator:jar:1.0.1:compile<br>
[INFO] | | | +- javax.ws.rs:javax.ws.rs-api:jar:2.0.1:compile<br>
[INFO] | | | +- org.glassfish.jersey.media:jersey-media-jaxb:jar:2.22.1:compile<br>
[INFO] | | | +- javax.annotation:javax.annotation-api:jar:1.2:compile<br>
[INFO] | | | +- org.glassfish.hk2:hk2-api:jar:2.4.0-b31:compile<br>
[INFO] | | | | +- org.glassfish.hk2:hk2-utils:jar:2.4.0-b31:compile<br>
[INFO] | | | | \- org.glassfish.hk2.external:aopalliance-repackaged:jar:2.4.0-b31:compile<br>
[INFO] | | | +- org.glassfish.hk2.external:javax.inject:jar:2.4.0-b31:compile<br>
[INFO] | | | \- org.glassfish.hk2:hk2-locator:jar:2.4.0-b31:compile<br>
[INFO] | | | \- org.javassist:javassist:jar:3.18.1-GA:compile<br>
[INFO] | | +- org.glassfish.jersey.ext:jersey-metainf-services:jar:2.22.1:compile<br>
[INFO] | | +- org.glassfish.jersey.ext:jersey-bean-validation:jar:2.22.1:compile<br>
[INFO] | | +- io.dropwizard.metrics:metrics-jersey2:jar:3.1.2:compile<br>
[INFO] | | +- com.fasterxml.jackson.jaxrs:jackson-jaxrs-json-provider:jar:2.6.3:compile<br>
[INFO] | | | +- com.fasterxml.jackson.jaxrs:jackson-jaxrs-base:jar:2.6.3:compile<br>
[INFO] | | | \- com.fasterxml.jackson.module:jackson-module-jaxb-annotations:jar:2.6.3:compile<br>
[INFO] | | +- org.glassfish.jersey.containers:jersey-container-servlet:jar:2.22.1:compile<br>
[INFO] | | | \- org.glassfish.jersey.containers:jersey-container-servlet-core:jar:2.22.1:compile<br>
[INFO] | | +- org.eclipse.jetty:jetty-server:jar:9.2.13.v20150730:compile<br>
[INFO] | | | +- javax.servlet:javax.servlet-api:jar:3.1.0:compile<br>
[INFO] | | | \- org.eclipse.jetty:jetty-io:jar:9.2.13.v20150730:compile<br>
[INFO] | | +- org.eclipse.jetty:jetty-webapp:jar:9.2.13.v20150730:compile<br>
[INFO] | | | \- org.eclipse.jetty:jetty-xml:jar:9.2.13.v20150730:compile<br>
[INFO] | | \- org.eclipse.jetty:jetty-continuation:jar:9.2.13.v20150730:compile<br>
[INFO] | +- io.dropwizard:dropwizard-servlets:jar:0.9.2:compile<br>
[INFO] | | \- io.dropwizard.metrics:metrics-annotation:jar:3.1.2:compile<br>
[INFO] | +- io.dropwizard:dropwizard-jetty:jar:0.9.2:compile<br>
[INFO] | | +- io.dropwizard.metrics:metrics-jetty9:jar:3.1.2:compile<br>
[INFO] | | +- org.eclipse.jetty:jetty-servlet:jar:9.2.13.v20150730:compile<br>
[INFO] | | | \- org.eclipse.jetty:jetty-security:jar:9.2.13.v20150730:compile<br>
[INFO] | | +- org.eclipse.jetty:jetty-servlets:jar:9.2.13.v20150730:compile<br>
[INFO] | | \- org.eclipse.jetty:jetty-http:jar:9.2.13.v20150730:compile<br>
[INFO] | +- io.dropwizard:dropwizard-lifecycle:jar:0.9.2:compile<br>
[INFO] | +- io.dropwizard.metrics:metrics-core:jar:3.1.2:compile<br>
[INFO] | +- io.dropwizard.metrics:metrics-jvm:jar:3.1.2:compile<br>
[INFO] | +- io.dropwizard.metrics:metrics-servlets:jar:3.1.2:compile<br>
[INFO] | | \- io.dropwizard.metrics:metrics-json:jar:3.1.2:compile<br>
[INFO] | +- io.dropwizard.metrics:metrics-healthchecks:jar:3.1.2:compile<br>
[INFO] | +- net.sourceforge.argparse4j:argparse4j:jar:0.6.0:compile<br>
[INFO] | \- org.eclipse.jetty.toolchain.setuid:jetty-setuid-java:jar:1.0.3:compile<br>
[INFO] +- de.thomaskrille:dropwizard-template-config:jar:1.1.0:compile<br>
[INFO] +- my.groupId.myProject:myProject-module1:jar:1.0-SNAPSHOT:compile<br>
[INFO] +- my.groupId.myProject:myProject-module2:jar:1.0-SNAPSHOT:compile<br>
[INFO] +- my.groupId.myProject:myProject-module3:jar:0.0.1-SNAPSHOT:compile<br>
[INFO] | +- io.dropwizard:dropwizard-auth:jar:0.9.1:compile<br>
[INFO] | \- io.dropwizard:dropwizard-client:jar:0.9.1:compile<br>
[INFO] | +- org.glassfish.jersey.core:jersey-client:jar:2.22.1:compile<br>
[INFO] | +- org.apache.httpcomponents:httpclient:jar:4.5.1:compile<br>
[INFO] | | +- org.apache.httpcomponents:httpcore:jar:4.4.3:compile<br>
[INFO] | | \- commons-codec:commons-codec:jar:1.9:compile<br>
[INFO] | +- io.dropwizard.metrics:metrics-httpclient:jar:3.1.2:compile<br>
[INFO] | \- org.glassfish.jersey.connectors:jersey-apache-connector:jar:2.22.1:compile<br>
[INFO] +- junit:junit:jar:4.12:test<br>
[INFO] | \- org.hamcrest:hamcrest-core:jar:1.3:test<br>
[INFO] +- org.hamcrest:hamcrest-library:jar:1.3:test<br>
[INFO] \- org.mockito:mockito-core:jar:1.10.19:test<br>
[INFO] \- org.objenesis:objenesis:jar:2.1:test<br>
**Case 2 : When dropwizard-core is in parent POM :**
my.groupId.myProject:myProject-main:jar:jar:1.0-SNAPSHOT<br>
[INFO] +- de.thomaskrille:dropwizard-template-config:jar:1.1.0:compile<br>
[INFO] +- my.groupId.myProject:myProject-module1:jar:1.0-SNAPSHOT:compile<br>
[INFO] +- my.groupId.myProject:myProject-module2:jar:1.0-SNAPSHOT:compile<br>
[INFO] +- my.groupId.myProject:myProject-common:jar:0.0.1-SNAPSHOT:compile<br>
[INFO] | +- io.dropwizard:dropwizard-auth:jar:0.9.1:compile<br>
[INFO] | \- io.dropwizard:dropwizard-client:jar:0.9.1:compile<br>
[INFO] | +- org.glassfish.jersey.core:jersey-client:jar:2.22.1:compile<br>
[INFO] | | +- javax.ws.rs:javax.ws.rs-api:jar:2.0.1:compile<br>
[INFO] | | +- org.glassfish.jersey.core:jersey-common:jar:2.22.1:compile<br>
[INFO] | | | +- org.glassfish.jersey.bundles.repackaged:jersey-guava:jar:2.22.1:compile<br>
[INFO] | | | \- org.glassfish.hk2:osgi-resource-locator:jar:1.0.1:compile<br>
[INFO] | | +- org.glassfish.hk2:hk2-api:jar:2.4.0-b31:compile<br>
[INFO] | | | +- org.glassfish.hk2:hk2-utils:jar:2.4.0-b31:compile<br>
[INFO] | | | \- org.glassfish.hk2.external:aopalliance-repackaged:jar:2.4.0-b31:compile<br>
[INFO] | | +- org.glassfish.hk2.external:javax.inject:jar:2.4.0-b31:compile<br>
[INFO] | | \- org.glassfish.hk2:hk2-locator:jar:2.4.0-b31:compile<br>
[INFO] | | \- org.javassist:javassist:jar:3.18.1-GA:compile<br>
[INFO] | +- org.apache.httpcomponents:httpclient:jar:4.5.1:compile<br>
[INFO] | | +- org.apache.httpcomponents:httpcore:jar:4.4.3:compile<br>
[INFO] | | \- commons-codec:commons-codec:jar:1.9:compile<br>
[INFO] | +- io.dropwizard.metrics:metrics-httpclient:jar:3.1.2:compile<br>
[INFO] | \- org.glassfish.jersey.connectors:jersey-apache-connector:jar:2.22.1:compile<br>
[INFO] +- io.dropwizard:dropwizard-core:jar:0.9.2:compile<br>
[INFO] | +- io.dropwizard:dropwizard-util:jar:0.9.2:compile<br>
[INFO] | | +- com.fasterxml.jackson.core:jackson-annotations:jar:2.6.0:compile<br>
[INFO] | | +- com.google.guava:guava:jar:18.0:compile<br>
[INFO] | | +- com.google.code.findbugs:jsr305:jar:3.0.1:compile<br>
[INFO] | | \- joda-time:joda-time:jar:2.9:compile<br>
[INFO] | +- io.dropwizard:dropwizard-jackson:jar:0.9.2:compile<br>
[INFO] | | +- com.fasterxml.jackson.core:jackson-core:jar:2.6.3:compile<br>
[INFO] | | +- com.fasterxml.jackson.core:jackson-databind:jar:2.6.3:compile<br>
[INFO] | | +- com.fasterxml.jackson.datatype:jackson-datatype-jdk7:jar:2.6.3:compile<br>
[INFO] | | +- com.fasterxml.jackson.datatype:jackson-datatype-guava:jar:2.6.3:compile<br>
[INFO] | | +- com.fasterxml.jackson.module:jackson-module-afterburner:jar:2.6.3:compile<br>
[INFO] | | +- com.fasterxml.jackson.datatype:jackson-datatype-joda:jar:2.6.3:compile<br>
[INFO] | | +- org.slf4j:slf4j-api:jar:1.7.12:compile<br>
[INFO] | | \- ch.qos.logback:logback-classic:jar:1.1.3:compile<br>
[INFO] | +- io.dropwizard:dropwizard-validation:jar:0.9.2:compile<br>
[INFO] | | +- org.hibernate:hibernate-validator:jar:5.2.2.Final:compile<br>
[INFO] | | | +- javax.validation:validation-api:jar:1.1.0.Final:compile<br>
[INFO] | | | +- org.jboss.logging:jboss-logging:jar:3.2.1.Final:compile<br>
[INFO] | | | \- com.fasterxml:classmate:jar:1.1.0:compile<br>
[INFO] | | \- org.glassfish:javax.el:jar:3.0.0:compile<br>
[INFO] | +- io.dropwizard:dropwizard-configuration:jar:0.9.2:compile<br>
[INFO] | | +- com.fasterxml.jackson.dataformat:jackson-dataformat-yaml:jar:2.6.3:compile<br>
[INFO] | | | \- org.yaml:snakeyaml:jar:1.15:compile<br>
[INFO] | | \- org.apache.commons:commons-lang3:jar:3.4:compile<br>
[INFO] | +- io.dropwizard:dropwizard-logging:jar:0.9.2:compile<br>
[INFO] | | +- io.dropwizard.metrics:metrics-logback:jar:3.1.2:compile<br>
[INFO] | | +- org.slf4j:jul-to-slf4j:jar:1.7.12:compile<br>
[INFO] | | +- ch.qos.logback:logback-core:jar:1.1.3:compile<br>
[INFO] | | +- org.slf4j:log4j-over-slf4j:jar:1.7.12:compile<br>
[INFO] | | +- org.slf4j:jcl-over-slf4j:jar:1.7.12:compile<br>
[INFO] | | \- org.eclipse.jetty:jetty-util:jar:9.2.13.v20150730:compile<br>
[INFO] | +- io.dropwizard:dropwizard-metrics:jar:0.9.2:compile<br>
[INFO] | +- io.dropwizard:dropwizard-jersey:jar:0.9.2:compile<br>
[INFO] | | +- org.glassfish.jersey.core:jersey-server:jar:2.22.1:compile<br>
[INFO] | | | +- org.glassfish.jersey.media:jersey-media-jaxb:jar:2.22.1:compile<br>
[INFO] | | | \- javax.annotation:javax.annotation-api:jar:1.2:compile<br>
[INFO] | | +- org.glassfish.jersey.ext:jersey-metainf-services:jar:2.22.1:compile<br>
[INFO] | | +- org.glassfish.jersey.ext:jersey-bean-validation:jar:2.22.1:compile<br>
[INFO] | | +- io.dropwizard.metrics:metrics-jersey2:jar:3.1.2:compile<br>
[INFO] | | +- com.fasterxml.jackson.jaxrs:jackson-jaxrs-json-provider:jar:2.6.3:compile<br>
[INFO] | | | +- com.fasterxml.jackson.jaxrs:jackson-jaxrs-base:jar:2.6.3:compile<br>
[INFO] | | | \- com.fasterxml.jackson.module:jackson-module-jaxb-annotations:jar:2.6.3:compile<br>
[INFO] | | +- org.glassfish.jersey.containers:jersey-container-servlet:jar:2.22.1:compile<br>
[INFO] | | | \- org.glassfish.jersey.containers:jersey-container-servlet-core:jar:2.22.1:compile<br>
[INFO] | | +- org.eclipse.jetty:jetty-server:jar:9.2.13.v20150730:compile<br>
[INFO] | | | +- javax.servlet:javax.servlet-api:jar:3.1.0:compile<br>
[INFO] | | | \- org.eclipse.jetty:jetty-io:jar:9.2.13.v20150730:compile<br>
[INFO] | | +- org.eclipse.jetty:jetty-webapp:jar:9.2.13.v20150730:compile<br>
[INFO] | | | \- org.eclipse.jetty:jetty-xml:jar:9.2.13.v20150730:compile<br>
[INFO] | | \- org.eclipse.jetty:jetty-continuation:jar:9.2.13.v20150730:compile<br>
[INFO] | +- io.dropwizard:dropwizard-servlets:jar:0.9.2:compile<br>
[INFO] | | \- io.dropwizard.metrics:metrics-annotation:jar:3.1.2:compile<br>
[INFO] | +- io.dropwizard:dropwizard-jetty:jar:0.9.2:compile<br>
[INFO] | | +- io.dropwizard.metrics:metrics-jetty9:jar:3.1.2:compile<br>
[INFO] | | +- org.eclipse.jetty:jetty-servlet:jar:9.2.13.v20150730:compile<br>
[INFO] | | | \- org.eclipse.jetty:jetty-security:jar:9.2.13.v20150730:compile<br>
[INFO] | | +- org.eclipse.jetty:jetty-servlets:jar:9.2.13.v20150730:compile<br>
[INFO] | | \- org.eclipse.jetty:jetty-http:jar:9.2.13.v20150730:compile<br>
[INFO] | +- io.dropwizard:dropwizard-lifecycle:jar:0.9.2:compile<br>
[INFO] | +- io.dropwizard.metrics:metrics-core:jar:3.1.2:compile<br>
[INFO] | +- io.dropwizard.metrics:metrics-jvm:jar:3.1.2:compile<br>
[INFO] | +- io.dropwizard.metrics:metrics-servlets:jar:3.1.2:compile<br>
[INFO] | | \- io.dropwizard.metrics:metrics-json:jar:3.1.2:compile<br>
[INFO] | +- io.dropwizard.metrics:metrics-healthchecks:jar:3.1.2:compile<br>
[INFO] | +- net.sourceforge.argparse4j:argparse4j:jar:0.6.0:compile<br>
[INFO] | \- org.eclipse.jetty.toolchain.setuid:jetty-setuid-java:jar:1.0.3:compile<br>
[INFO] +- junit:junit:jar:4.12:test<br>
[INFO] | \- org.hamcrest:hamcrest-core:jar:1.3:test<br>
[INFO] +- org.hamcrest:hamcrest-library:jar:1.3:test<br>
[INFO] \- org.mockito:mockito-core:jar:1.10.19:test<br>
[INFO] \- org.objenesis:objenesis:jar:2.1:test<br>
If anyone could come up with a possible reasoning, it would be of great help.
Thanks.
3 answers
solution1
10 2018-05-13 09:37:28
Your problem is that you have two different slf4j implementations (aka bindings) in your classpath and this shouldn't be the case.
When this happens, the first one (in order of appearance in the classpath) is used by slf4j. Then dropwizard LoggingUtil tries to retrieve the actual ILoggerFactory but expects it to be an instance of logback's LoggerContext .
In your case, it is an instance of SimpleLoggerFactory because slf4j-simple appears first in the classpath when you declare the dependency to dropwizard-core in the the parent POM: indeed, the logback-classic dependency is brought by dropwizard-core .
The solution is very simple: you must remove the dependency to slf4j-simple .
This is explained at the very beginning of the slf4j manual .
solution2
1 2018-09-17 09:10:49
The issue is resolved for me after I globally excluded the jar slf4j-log4j12 by adding the below in my build.gradle
configurations.all {
exclude group:"org.slf4j", module: "slf4j-log4j12"
}
solution3
0 2020-11-04 10:39:41
Sometimes you cannot exclude library because it is used by another libraries. So, you need to have two implementations. I had such problem so I in my model of Configuration which extends io.dropwizard.Configuration model I override method
@Override
public synchronized LoggingFactory getLoggingFactory() {
return new ExternalLoggingFactory();
}
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