Introduces ces-build-lib for maven and deployment to nexus

Jenkinsfile

@@ -1,14 +1,19 @@
 #!groovy
-node {
+@Library('github.com/cloudogu/ces-build-lib@caa9632')
+import com.cloudogu.ces.cesbuildlib.*
 
 properties([
         // Don't run concurrent builds, because the ITs use the same port causing random failures on concurrent builds.
         disableConcurrentBuilds()
 ])
 
+node {
+
     cesFqdn = findHostName()
     cesUrl = "https://${cesFqdn}"
-    credentials = usernamePassword(credentialsId: 'scmCredentials', passwordVariable: 'PASSWORD', usernameVariable: 'USERNAME')
+    String credentialsId = 'scmCredentials'
+
+    Maven mvn = new MavenWrapper(this)
 
     catchError {
 
@@ -39,7 +44,8 @@ node {
         )
 
         stage('SonarQube Analysis') {
-            withCredentials([credentials]) {
+            withCredentials([usernamePassword(credentialsId: credentialsId,
+                    passwordVariable: 'PASSWORD', usernameVariable: 'USERNAME')]) {
                 //noinspection GroovyAssignabilityCheck
                 mvn "org.codehaus.mojo:sonar-maven-plugin:3.2:sonar -Dsonar.host.url=${cesUrl}/sonar " +
                         "-Dsonar.login=${USERNAME} -Dsonar.password=${PASSWORD} -Dsonar.exclusions=target/**"
@@ -47,9 +53,9 @@ node {
         }
 
         stage('Deploy Artifacts') {
-            String releaseProp = "-DaltReleaseDeploymentRepository=${cesFqdn}::default::${cesUrl}/nexus/content/repositories/releases/";
-            String snapshotProp = "-DaltSnapshotDeploymentRepository=${cesFqdn}::default::${cesUrl}/nexus/content/repositories/snapshots/";
-            mvn "-DskipTests deploy ${releaseProp} ${snapshotProp}"
+            mvn.setDeploymentRepository(cesFqdn, "${cesUrl}/nexus", credentialsId)
+
+            mvn.deployToNexusRepository('-Dmaven.javadoc.failOnError=false')
         }
     }
 
@@ -60,44 +66,3 @@ node {
 // Init global vars in order to avoid NPE
 String cesFqdn = ''
 String cesUrl = ''
-def credentials= {}
-
-void mvn(String args) {
-    writeSettingsXml()
-    sh "./mvnw -s settings.xml --batch-mode -V -U -e -Dsurefire.useFile=false ${args}"
-    sh 'rm -f settings.xml'
-}
-
-String findHostName() {
-    String regexMatchesHostName = 'https?://([^:/]*)'
-
-    // Storing matcher in a variable might lead to java.io.NotSerializableException: java.util.regex.Matcher
-    if (!(env.JENKINS_URL =~ regexMatchesHostName)) {
-        script.error 'Unable to determine hostname from env.JENKINS_URL. Expecting http(s)://server:port/jenkins'
-    }
-    return (env.JENKINS_URL =~ regexMatchesHostName)[0][1]
-}
-
-void writeSettingsXml() {
-    withCredentials([credentials]) {
-        writeFile file: "settings.xml", text: """
-            <settings>
-                <localRepository>${env.HOME}/.m2/repository</localRepository>
-                <servers>
-                    <server>
-                      <id>${cesFqdn}</id>
-                      <username>${USERNAME}</username>
-                      <password>${PASSWORD}</password>
-                    </server>
-                </servers>
-                <mirrors>
-                    <mirror>
-                      <id>${cesFqdn}</id>
-                      <name>${cesFqdn} Central Mirror</name>
-                      <url>${cesUrl}/nexus/content/groups/public</url>
-                      <mirrorOf>central</mirrorOf>
-                    </mirror>
-                </mirrors>
-            </settings>"""
-    }
-}