Added job for executing groovy scripts

pkg/controller/jenkins/groovy/doc.go

@@ -0,0 +1,2 @@
+// Package groovy implements groovy scripts execution via Jenkins Job
+package groovy

pkg/controller/jenkins/groovy/groovy.go

@@ -0,0 +1,96 @@
+package groovy
+
+import (
+	"crypto/sha256"
+	"encoding/base64"
+
+	virtuslabv1alpha1 "github.com/VirtusLab/jenkins-operator/pkg/apis/virtuslab/v1alpha1"
+	jenkinsclient "github.com/VirtusLab/jenkins-operator/pkg/controller/jenkins/client"
+	"github.com/VirtusLab/jenkins-operator/pkg/controller/jenkins/jobs"
+
+	"github.com/go-logr/logr"
+	k8s "sigs.k8s.io/controller-runtime/pkg/client"
+)
+
+const (
+	// ExecuteGroovyJobName this is the fixed execute groovy job name
+	ExecuteGroovyJobName = "Execute Groovy Scripts"
+
+	groovyScriptParameterName = "GROOVY_SCRIPT"
+)
+
+// Groovy defines API for groovy scripts execution via jenkins job
+type Groovy struct {
+	jenkinsClient jenkinsclient.Jenkins
+	k8sClient     k8s.Client
+	logger        logr.Logger
+}
+
+// New creates new instance of Groovy
+func New(jenkinsClient jenkinsclient.Jenkins, k8sClient k8s.Client, logger logr.Logger) *Groovy {
+	return &Groovy{
+		jenkinsClient: jenkinsClient,
+		k8sClient:     k8sClient,
+		logger:        logger,
+	}
+}
+
+// ConfigureGroovyJob configures jenkins job for executing groovy scripts
+func (g *Groovy) ConfigureGroovyJob() error {
+	_, err := g.jenkinsClient.CreateOrUpdateJob(groovyJobConfigXML, ExecuteGroovyJobName)
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+// EnsureGroovyJob executes groovy script and verifies jenkins job status according to reconciliation loop lifecycle
+// see https://wiki.jenkins.io/display/JENKINS/Jenkins+Script+Console
+func (g *Groovy) EnsureGroovyJob(groovyScript string, jenkins *virtuslabv1alpha1.Jenkins) (bool, error) {
+	jobsClient := jobs.New(g.jenkinsClient, g.k8sClient, g.logger)
+
+	hash := sha256.New()
+	hash.Write([]byte(groovyScript))
+	encodedHash := base64.URLEncoding.EncodeToString(hash.Sum(nil))
+
+	parameters := map[string]string{
+		groovyScriptParameterName: groovyScript,
+	}
+
+	done, err := jobsClient.EnsureBuildJob(ExecuteGroovyJobName, encodedHash, parameters, jenkins, true)
+	if err != nil {
+		return false, err
+	}
+	return done, nil
+}
+
+var groovyJobConfigXML = `
+<flow-definition plugin="workflow-job@2.30">
+  <actions/>
+  <description></description>
+  <keepDependencies>false</keepDependencies>
+  <properties>
+    <hudson.model.ParametersDefinitionProperty>
+      <parameterDefinitions>
+        <hudson.model.TextParameterDefinition>
+          <name>GROOVY_SCRIPT</name>
+          <description></description>
+          <defaultValue></defaultValue>
+          <trim>false</trim>
+        </hudson.model.TextParameterDefinition>
+      </parameterDefinitions>
+    </hudson.model.ParametersDefinitionProperty>
+  </properties>
+  <definition class="org.jenkinsci.plugins.workflow.cps.CpsFlowDefinition" plugin="workflow-cps@2.61">
+    <script>import hudson.util.RemotingDiagnostics
+import jenkins.model.Jenkins.MasterComputer
+
+println RemotingDiagnostics.executeGroovy(&quot;&quot;&quot;
+${params.GROOVY_SCRIPT}
+&quot;&quot;&quot;, MasterComputer.localChannel)</script>
+    <sandbox>false</sandbox>
+  </definition>
+  <triggers/>
+  <disabled>false</disabled>
+</flow-definition>
+`