Gradle Goodness: Continue Build Even with Failed Tasks
If we run a Gradle build and one of the tasks fails, the whole build stops immediately. So we have fast feedback of our build status. If we don't want to this and want Gradle to execute all tasks, even though some might have failed, we use the command line option --continue
. When we use the --continue
command line option Gradle will execute every task where the dependent tasks are not failing. This is also useful in a multi-module project where we might want to build all projects even though some may have failing tests, so we get a complete overview of failed tests for all modules.
In the following Gradle build file we have two tasks. The task failTask
throws a TaskExecutionException
to purposely fail the task. The successTask
will not fail:
00.
task failTask << { task ->
01.
println
"Running ${task.name}"
02.
03.
throw
new
TaskExecutionException(
04.
task,
05.
new
Exception(
'Fail task on purpose'
))
06.
}
07.
08.
task successTask << {
09.
println
"Running ${it.name}"
10.
}
Let's run both tasks from the command line and see the output:
$ gradle failTask successTask
:failTask
Running failTask
:failTask FAILED
FAILURE: Build failed with an exception.
* Where:
Build file '/Users/mrhaki/samples/gradle/continue/build.gradle' line: 4
* What went wrong:
Execution failed for task ':failTask'.
> Fail task on purpose
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.
BUILD FAILED
Total time: 4.148 secs
$
We see the build has failed and only the task failTask
is executed. Now we run the same two tasks, but we use the command line option --continue
:
$ gradle --continue failTask successTask
:failTask
Running failTask
:failTask FAILED
:successTask
Running successTask
FAILURE: Build failed with an exception.
* Where:
Build file '/Users/mrhaki/samples/gradle/continue/build.gradle' line: 4
* What went wrong:
Execution failed for task ':failTask'.
> Fail task on purpose
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.
BUILD FAILED
Total time: 6.918 secs
$
This time the successTask
is executed even though the failTask
has failed again. Gradle will keep track of all tasks that have failed and displays a summary with all the tasks that have failed.
Written with Gradle 2.2.1
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