To configure SLF4J in Gradle project:
Add a log4j-test.properties under the directory of the java test.
build.gradle
file.test { systemProperty "log4j.configuration", "log4j-test.properties" } dependencies { shadow library.java.slf4j_api shadow library.java.slf4j_log4j14 // or shadow library.java.slf4j_jdk12 } |
Note: as of Beam 2.53.0, Beam does not support slf4j 2.x. Make sure your slf4j dependencies are of version 1.x
shadow library.java.slf4j_log4j14
is not necessary if another library already provides this dependency.Check the dependency included in the dependency tree, execute:
./gradlew dependencies. |
Check If you encounter an error message like the following.
SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder". |
library.java.slf4j_log4j12
or
library.java.slf4j_jdk14
in the build.gradle
file.To configure SLF4J in Maven project
Configure the dependency in pom.xml:
<properties> <slf4j.version>1.7.30</slf4j.version> </properties> <dependencies> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-api</artifactId> <version>${slf4j.version}</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-jdk14</artifactId> <version>${slf4j.version}</version> <!-- When loaded at runtime this will wire up slf4j to the JUL backend --> <scope>runtime</scope> </dependency> <dependencies> |
.git/hooks/pre-commit.
--no-verify.
chmod u-x.
Example command (run from beam
root):
./gradlew :examples:java:test --tests org.apache.beam.examples.subprocess.ExampleEchoPipelineTest --info |
To break that line down a bit:
./gradlew
beam
root, so wherever you run your command from, this path needs to point there.:examples:java:test
build.gradle
file)test
because it isn't a directory name, but the name of the Gradle task you're asking the wrapper to perform--tests
src/test/java
folder of the subproject--info
(optional)Hello World
pipeline with compiled Dataflow Java worker.You can dump multiple definitions for a gcp project
name and temp
folder. They are present since different targets use different names.
GOOGLE_APPLICATION_CREDENTIALS
to your env
variables../gradlew :runners:google-cloud-dataflow-java:examples:preCommitLegacyWorker -PdataflowProject=<GcpProjectName> -Pproject=<GcpProjectName> -PgcpProject=<GcpProjectName> -PgcsTempRoot=<Gcs location in format: gs://..., no trailing slash> -PdataflowTempRoot=<Gcs location in format: gs://...> |
./gradlew :runners:google-cloud-dataflow-java:examples:preCommitFnApiWorker -PdataflowProject=<GcpProjectName> -Pproject=<GcpProjectName> -PgcpProject=<GcpProjectName> -PgcsTempRoot=<Gcs location in format: gs://..., no trailing slash> -PdataflowTempRoot=<Gcs location in format: gs://..., no trailing slash> -PdockerImageRoot=<docker image store location in format gcr.io/...> |
If you want to run your own pipeline, and in the meanwhile change beam repo code for dev/testing purposes. Here is an example for a simple runner like directRunner:
example
folder.Add the following build target to the related build.gradle
:
task execute(type:JavaExec) { main = "org.apache.beam.examples.SideInputWordCount" classpath = configurations."directRunnerPreCommit" } |
There are also alternative choices, with a slight difference:
Option 1
Create a maven project.
Use the following command to publish changed code to the local repository.
./gradlew -Ppublishing -PnoSigning publishMavenJavaPublicationToMavenLocal |
Option 2
To use snapshot BEAM new features prior to the next Beam release, you need to;
apache.snapshots
repository to your pom.xml.
Check this example .beam.version
to a snapshot version, e.g. "2.24.0-SNAPSHOT" or later ( listed here ).Continue on error
Use the --continue
flag makes to compileJava task and to dump all found errors, not stop on first.
This can happen when you start IntelliJ or (in my case) after modifying protos
.
This is not a solved problem yet. But here are some current approaches:
build
from consoleindex
is not updated with 3 or 4 steps. For more information, go to Rebuild IntelliJ project indexes.A workaround that did the trick. Since many things were tried in the process and no clear way to reproduce the error, this might not be the correct or best step. Update steps if you find a shorter or cleaner way to do the trick.
Refresh gradle
project in IntelliJ.
Clean build project from the console. Execute>
./gradlew clean cleanTest build -x testWebsite -x :rat -x test |
Sometimes build fails even for the main (master) branch either using IntelliJ or command line. If it worked before but now consistently failing, most likely this is due to inconsistent Gradle cache. It could happen when switching branches back and forth. Run the build Gradle command line with "--rerun-tasks" would do the trick.
We recommend running this command, in order to catch common style issues, potential bugs (using code analysis), and Javadoc issues before creating a pull request. Running this takes 5 to 10 minutes.
./gradlew spotlessApply && ./gradlew -PenableCheckerFramework=true checkstyleMain checkstyleTest javadoc spotbugsMain compileJava compileTestJava |
If you don't run this locally Jenkins will run them during pre-submit. However, if these fail during pre-submit, you may not see the output of test failures. So doing this first is recommended to make your development process a bit smoother and iterate on your PR until it passes the pre-submit.