class cast exception when running command line

Description

running liquibase with

./gradlew dropAll update

I get this error:

FAILURE: Build failed with an exception.
 
 * What went wrong:
 Execution failed for task ':dropAll'.
 > org.gradle.internal.logging.slf4j.OutputEventListenerBackedLogger cannot be cast to ch.qos.logback.classic.Logger
 
 * Try:
  Run with --scan to get full insights.
 
 * Exception is:
 org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':dropAll'.
   at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:100)
   at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:70)
   at org.gradle.api.internal.tasks.execution.OutputDirectoryCreatingTaskExecuter.execute(OutputDirectoryCreatingTaskExecuter.java:51)
   at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:62)
   at org.gradle.api.internal.tasks.execution.ResolveTaskOutputCachingStateExecuter.execute(ResolveTaskOutputCachingStateExecuter.java:54)
   at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:60)
   at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:97)
   at org.gradle.api.internal.tasks.execution.CleanupStaleOutputsExecuter.execute(CleanupStaleOutputsExecuter.java:87)
   at org.gradle.api.internal.tasks.execution.ResolveTaskArtifactStateTaskExecuter.execute(ResolveTaskArtifactStateTaskExecuter.java:52)
   at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:52)
   at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:54)
   at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:43)
   at org.gradle.api.internal.tasks.execution.CatchExceptionTaskExecuter.execute(CatchExceptionTaskExecuter.java:34)
   at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker$1.run(DefaultTaskGraphExecuter.java:248)
   at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:336)
   at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:328)
   at org.gradle.internal.progress.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:199)
   at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:110)
   at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:241)
   at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:230)
   at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.processTask(DefaultTaskPlanExecutor.java:123)
   at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.access$200(DefaultTaskPlanExecutor.java:79)
   at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker$1.execute(DefaultTaskPlanExecutor.java:104)
   at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker$1.execute(DefaultTaskPlanExecutor.java:98)
   at org.gradle.execution.taskgraph.DefaultTaskExecutionPlan.execute(DefaultTaskExecutionPlan.java:626)
   at org.gradle.execution.taskgraph.DefaultTaskExecutionPlan.executeWithTask(DefaultTaskExecutionPlan.java:581)
   at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.run(DefaultTaskPlanExecutor.java:98)
   at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:63)
   at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:46)
   at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55)
 Caused by: java.lang.ClassCastException: org.gradle.internal.logging.slf4j.OutputEventListenerBackedLogger cannot be cast to ch.qos.logback.classic.Logger
   at liquibase.integration.commandline.Main.setupLogging(Main.java:212)
   at liquibase.integration.commandline.Main.run(Main.java:130)
   at org.liquibase.gradle.LiquibaseTask.runLiquibase(LiquibaseTask.groovy:113)
   at org.liquibase.gradle.LiquibaseTask$_liquibaseAction_closure1.doCall(LiquibaseTask.groovy:52)
   at org.liquibase.gradle.LiquibaseTask.liquibaseAction(LiquibaseTask.groovy:46)
   at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:73)
   at org.gradle.api.internal.project.taskfactory.StandardTaskAction.doExecute(StandardTaskAction.java:46)
   at org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute(StandardTaskAction.java:39)
   at org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute(StandardTaskAction.java:26)
   at org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:780)
   at org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:747)
   at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter$1.run(ExecuteActionsTaskExecuter.java:121)
   at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:336)
   at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:328)
   at org.gradle.internal.progress.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:199)
   at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:110)
   at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:110)
   at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:92)
   ... 29 more

Environment

linux 16.04
java 8
gradle 4.4
postgre 9.6
liquibase I took last version from master branch

Attachments

22 Jan 2018, 05:00 PM

Linked issues

is caused by

CORE-2389

Replace liquibase logging with slf4j

Activity

Show:

Nathan Voxland July 16, 2019 at 7:16 PM

Moving to 3.7.0 release

Steve Saliman July 14, 2018 at 8:31 PM

Version 2.0.0 of the Liquibase Gradle Plugn has been released. It now has its own classpath and should work much better when using Liquibase in Gradle projects.

Note that there are still issues with logging and console output, as discussed in https://liquibase.jira.com/browse/CORE-3220 - The --logLevel parameter appears to be completely ignored, and console output doesn't work either. There is a workaround to the console output, as described in the Gradle Plugin's README to at least get INFO output to the console as the plugin runs.

Steve Saliman June 16, 2018 at 10:49 PM

The Liquibase Gradle plugin has been updated to (hopefully) provide more classpath isolation between projects, liquibase, and Gradle itself. Builds now run with Liquibase 3.6, though logging doesn't seem to be working right - change sets are not shown in the console as Liquiabse runs as they used to be.

But for users who need Liquibase 3.6, this may be a workable solution.

There is still some clean up work that needs to be done, but the 2.0.0-SNAPSHOT release of the plugin is available for people who need to update their Liquibase version now.

Nathan Niesen May 18, 2018 at 7:16 PM

We have to exclude logback because we use log4j and you can only have one implementation on the classpath. These lines will still throw class not found exceptions if logback is not on the classpath:

org.slf4j.Logger rootLogger =
		        LoggerFactory.getLogger(ch.qos.logback.classic.Logger.ROOT_LOGGER_NAME);

        if ( ch.qos.logback.classic.Logger.class.isAssignableFrom(rootLogger.getClass()) ) {

The ch.qos.logback.classic.Logger.ROOT_LOGGER_NAME is inherited from org.slf4j.Logger..ROOT_LOGGER_NAME so you could replace that.

Instead of Logger.class.isAssignableFrom you probably want something like:

try {
            Class.forName("ch.qos.logback.classic.Logger");
        } catch (ClassNotFoundException e) {
            System.out.println("Logging cannot be configured; Logback is not on the classpath.");
            return;
        }

As it stands now, 3.6 is completely unusable in gradle projects. I think the priority should be changed to Blocker.

Andrea Vencato March 13, 2018 at 8:00 AM

Well, I think yours is a good solution, maybe temporary.
If the logger isn't Logback, it throws an exception it means that Liquibase doesn't work at all in this case.

This solution is better than none imho.

Fixed

Details

Reporter

Andrea Vencato

Priority

Major

Created January 22, 2018 at 4:57 PM

Updated July 16, 2019 at 7:17 PM

Resolved July 16, 2019 at 7:17 PM

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