Added support for displaying Maven logs in JSON

This solves GH issue apache#1783

build/Dockerfile

@@ -24,10 +24,15 @@ RUN mkdir -p /usr/share/maven \
     && echo "${SHA} /tmp/maven.tar.gz" | sha512sum -c - \
     && tar -xzC /usr/share/maven --strip-components=1 -f /tmp/maven.tar.gz \
     && rm -v /tmp/maven.tar.gz \
-    && ln -s /usr/share/maven/bin/mvn /usr/bin/mvn
+    && ln -s /usr/share/maven/bin/mvn /usr/bin/mvn \
+    && rm /usr/share/maven/lib/maven-slf4j-provider*
 
 ADD build/_maven_output /tmp/artifacts/m2
 ADD build/_kamelets /kamelets
+COPY build/_maven_overlay/ /usr/share/maven/lib/
+ADD build/logback.xml /usr/share/maven/conf/
+
+ENV MAVEN_OPTS="${MAVEN_OPTS} -Dlogback.configurationFile=/usr/share/maven/conf/logback.xml"
 
 USER 0
 

build/logback.xml

@@ -0,0 +1,62 @@
+<!--
+    Licensed to the Apache Software Foundation (ASF) under one or more
+    contributor license agreements.  See the NOTICE file distributed with
+    this work for additional information regarding copyright ownership.
+    The ASF licenses this file to You under the Apache License, Version 2.0
+    (the "License"); you may not use this file except in compliance with
+    the License.  You may obtain a copy of the License at
+         http://www.apache.org/licenses/LICENSE-2.0
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+-->
+<configuration>
+    <appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
+        <!--
+        This configuration tries to output the Maven build log in a way that is as close as possible the native k8s
+        log output format.
+        -->
+        <encoder class="net.logstash.logback.encoder.LoggingEventCompositeJsonEncoder">
+            <providers>
+                <logLevel>
+                    <fieldName>level</fieldName>
+                </logLevel>
+                <timestamp>
+                    <fieldName>ts</fieldName>
+                    <timeZone>UTC</timeZone>
+                </timestamp>
+                <loggerName>
+                    <fieldName>logger</fieldName>
+                </loggerName>
+                <message>
+                    <fieldName>msg</fieldName>
+                </message>
+                <callerData>
+                    <classFieldName>class</classFieldName>
+                </callerData>
+                <threadName>
+                    <fieldName>thread</fieldName>
+                </threadName>
+                <mdc/>
+                <arguments>
+                    <includeNonStructuredArguments>false</includeNonStructuredArguments>
+                </arguments>
+                <logstashMarkers/>
+                <stackTrace>
+                    <fieldName>stack</fieldName>
+                    <throwableConverter class="net.logstash.logback.stacktrace.ShortenedThrowableConverter">
+                        <maxLength>4096</maxLength>
+                        <rootCauseFirst>false</rootCauseFirst>
+                    </throwableConverter>
+                </stackTrace>
+            </providers>
+        </encoder>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="CONSOLE"/>
+    </root>
+
+</configuration>

script/Makefile

@@ -219,6 +219,7 @@ clean:
 	rm -f kamel
 	rm -f *.test
 	rm -rf build/_maven_output
+	rm -rf build/_maven_overlay
 	rm -rf build/_output
 	rm -rf camel-k-client-*.tar.gz
 	rm -rf camel-k-examples-*.tar.gz
@@ -237,7 +238,11 @@ lint-fix:
 check-licenses:
 	./script/check_licenses.sh
 
-images: bundle-kamelets test
+maven-overlay:
+	mkdir -p build/_maven_overlay
+	./script/maven_overlay.sh build/_maven_overlay
+
+images: bundle-kamelets test maven-overlay
 	mkdir -p build/_maven_output
 	mkdir -p build/_output/bin
 ifneq ($(shell uname -s 2>/dev/null || echo Unknown),Linux)
@@ -247,7 +252,7 @@ else
 endif
 	docker build -t $(IMAGE_NAME):$(VERSION) -f build/Dockerfile .
 
-images-dev: bundle-kamelets test package-artifacts
+images-dev: bundle-kamelets test package-artifacts maven-overlay
 	mkdir -p build/_maven_output
 	mkdir -p build/_output/bin
 ifneq ($(shell uname -s 2>/dev/null || echo Unknown),Linux)

script/maven_overlay.sh

@@ -0,0 +1,23 @@
+#!/bin/sh
+
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+mvn dependency:get -Dartifact=ch.qos.logback:logback-core:1.2.3 -Ddest=$1
+mvn dependency:get -Dartifact=ch.qos.logback:logback-classic:1.2.3 -Ddest=$1
+mvn dependency:get -Dartifact=net.logstash.logback:logstash-logback-encoder:4.11 -Ddest=$1
+mvn dependency:get -Dartifact=com.fasterxml.jackson.core:jackson-annotations:2.9.10 -Ddest=$1
+mvn dependency:get -Dartifact=com.fasterxml.jackson.core:jackson-core:2.9.10 -Ddest=$1
+mvn dependency:get -Dartifact=com.fasterxml.jackson.core:jackson-databind:2.9.10.8 -Ddest=$1