[feature] Default CI log level for slf4j-simple to error to prevent noise (#5118)

* [feature] Log "debounce" filter to remove spam.

* [log] slf4j-simple should be optional

This also sets the default log level to ERROR during CI builds for many
mvn invocations. This should reduce noise in the logs.

* [log] Rely only on mvn loglevel=error for now

* [cli] Clean up unused dependency

* [log] Change level to error/warn in more CI

.travis.yml

@@ -133,13 +133,13 @@ script:
   - /bin/bash ./bin/utils/detect_tab_in_java_class.sh
   # run integration tests defined in maven pom.xml
   # WARN: Travis will timeout after 10 minutes of no stdout/stderr activity, which is problematic with mvn --quiet.
-  - mvn --quiet --batch-mode --show-version clean install
-  - mvn --quiet --batch-mode --show-version verify -Psamples
+  - mvn --quiet --batch-mode --show-version clean install -Dorg.slf4j.simpleLogger.defaultLogLevel=error
+  - mvn --quiet --batch-mode --show-version verify -Psamples -Dorg.slf4j.simpleLogger.defaultLogLevel=error
   # test maven plugin
-  - mvn --quiet clean compile -f modules/openapi-generator-maven-plugin/examples/java-client.xml
-  - mvn --quiet clean compile -f modules/openapi-generator-maven-plugin/examples/multi-module/pom.xml
-  - mvn --quiet clean compile -f modules/openapi-generator-maven-plugin/examples/kotlin.xml
-  - mvn --quiet clean compile -f modules/openapi-generator-maven-plugin/examples/spring.xml
+  - mvn --quiet clean compile -f modules/openapi-generator-maven-plugin/examples/java-client.xml -Dorg.slf4j.simpleLogger.defaultLogLevel=error
+  - mvn --quiet clean compile -f modules/openapi-generator-maven-plugin/examples/multi-module/pom.xml -Dorg.slf4j.simpleLogger.defaultLogLevel=error
+  - mvn --quiet clean compile -f modules/openapi-generator-maven-plugin/examples/kotlin.xml -Dorg.slf4j.simpleLogger.defaultLogLevel=error
+  - mvn --quiet clean compile -f modules/openapi-generator-maven-plugin/examples/spring.xml -Dorg.slf4j.simpleLogger.defaultLogLevel=error
   # test gradle plugin
   - (cd modules/openapi-generator-gradle-plugin/samples/local-spec && ./gradlew buildGoSdk)
   - (cd modules/openapi-generator-gradle-plugin/samples/local-spec && ./gradlew openApiGenerate)

CI/.drone.yml

@@ -29,8 +29,8 @@ steps:
 - name: java11-test
   image: openjdk:11.0
   commands:
-  - ./mvnw clean install
-  - ./mvnw --quiet verify -Psamples.droneio
+  - ./mvnw -quiet clean install -Dorg.slf4j.simpleLogger.defaultLogLevel=error
+  - ./mvnw --quiet verify -Psamples.droneio -Dorg.slf4j.simpleLogger.defaultLogLevel=error
   # test all generators with fake petstore spec (2.0, 3.0)
   - /bin/bash bin/utils/test-fake-petstore-for-all.sh
   # generate test scripts

CI/bitrise.yml

@@ -28,7 +28,7 @@ workflows:
 
             set -e
 
-            mvn package
+            mvn package -Dorg.slf4j.simpleLogger.defaultLogLevel=error
         title: Build openapi-generator
     - script@1.1.5:
         title: Update Swift4 samples

CI/circle_parallel.sh

@@ -11,8 +11,8 @@ if [ "$NODE_INDEX" = "1" ]; then
   echo "Running node $NODE_INDEX to test 'samples.circleci' defined in pom.xml ..."
   #cp CI/pom.xml.circleci pom.xml
   java -version
-  mvn --quiet verify -Psamples.circleci
-  mvn --quiet javadoc:javadoc -Psamples.circleci
+  mvn --quiet verify -Psamples.circleci -Dorg.slf4j.simpleLogger.defaultLogLevel=error
+  mvn --quiet javadoc:javadoc -Psamples.circleci -Dorg.slf4j.simpleLogger.defaultLogLevel=error
 
 elif [ "$NODE_INDEX" = "2" ]; then
   # run ensure-up-to-date sample script on SNAPSHOT version only
@@ -47,13 +47,13 @@ elif [ "$NODE_INDEX" = "2" ]; then
   sudo apt-get -y build-dep libcurl4-gnutls-dev
   sudo apt-get -y install libcurl4-gnutls-dev
   # run integration tests
-  mvn --quiet verify -Psamples.misc
+  mvn --quiet verify -Psamples.misc -Dorg.slf4j.simpleLogger.defaultLogLevel=error
 else
   echo "Running node $NODE_INDEX to test 'samples.circleci.jdk7' defined in pom.xml ..."
   sudo update-java-alternatives -s java-1.7.0-openjdk-amd64
   java -version
   #cp CI/pom.xml.circleci.java7 pom.xml
-  mvn --quiet verify -Psamples.circleci.jdk7
+  mvn --quiet verify -Psamples.circleci.jdk7 -Dorg.slf4j.simpleLogger.defaultLogLevel=error
 fi
 
 

appveyor.yml

@@ -48,7 +48,7 @@ build_script:
   - nuget restore samples\client\petstore\csharp\OpenAPIClientNetStandard\Org.OpenAPITools.sln
   - msbuild samples\client\petstore\csharp\OpenAPIClientNetStandard\Org.OpenAPITools.sln /logger:"C:\Program Files\AppVeyor\BuildAgent\Appveyor.MSBuildLogger.dll"
   # install openapi-generator locally
-  - mvn clean install --quiet
+  - mvn clean install --quiet -Dorg.slf4j.simpleLogger.defaultLogLevel=error
   # run the locally installed openapi-generator-gradle-plugin
   - gradle -b modules\openapi-generator-gradle-plugin\samples\local-spec\build.gradle buildGoSdk --info
 test_script:

bin/openapi3/run-all-petstore

@@ -10,6 +10,7 @@ sleep 10
 
 successes=0
 failures=0
+export JAVA_OPTS="${JAVA_OPTS} -Djava.awt.headless=true -Dorg.slf4j.simpleLogger.defaultLogLevel=warn"
 for SCRIPT in $(ls -l ./bin/openapi3/*.sh | grep -v all)
 do
     if [ -f ${SCRIPT} -a -x ${SCRIPT} ]; then

bin/utils/ensure-up-to-date

@@ -93,8 +93,7 @@ declare -a always_iterate=(
 "${root}/bin/utils/export_generators_readme.sh"
 )
 
-export JAVA_OPTS="${JAVA_OPTS} -Djava.awt.headless=true"
-
+export JAVA_OPTS="${JAVA_OPTS} -Djava.awt.headless=true -Dorg.slf4j.simpleLogger.defaultLogLevel=warn"
 if [ "true" = "$batch_mode" ]; then
   if [ ! -f "$executable" ]; then
     (cd "${root}" && mvn -B clean package -DskipTests=true -Dmaven.javadoc.skip=true)

circle.yml

@@ -66,7 +66,7 @@ jobs:
     - run: sleep 30
     - run: cat /etc/hosts
     # Test
-    - run: mvn --quiet clean install
+    - run: mvn --quiet clean install -Dorg.slf4j.simpleLogger.defaultLogLevel=error
     - run: ./CI/circle_parallel.sh 
     # Save dependency cache
     - save_cache: