Add support for config changed param

pom.xml

@@ -24,6 +24,7 @@
     <dd-trace-java.version>0.71.0</dd-trace-java.version>
     <!-- byte-buddy is needed until we bump to java 11: https://stackoverflow.com/questions/69929229/mockito-shipped-within-spring-boot-fails-to-attach-to-jvm-openjdk-11/72912290#72912290 -->
     <byte-buddy.version>1.12.14</byte-buddy.version>
+    <configuration-as-code.version>1462.v069a_b_57ff5c8</configuration-as-code.version>
     <useBeta>true</useBeta>
   </properties>
 
@@ -87,6 +88,19 @@
       <version>2.9.0</version>
     </dependency>
 
+    <dependency>
+      <groupId>io.jenkins</groupId>
+      <artifactId>configuration-as-code</artifactId>
+      <version>${configuration-as-code.version}</version>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+        <groupId>io.jenkins.configuration-as-code</groupId>
+        <artifactId>test-harness</artifactId>
+        <version>${configuration-as-code.version}</version>
+        <scope>test</scope>
+    </dependency>
+
     <!-- https://mvnrepository.com/artifact/org.mockito/mockito-core -->
     <dependency>
       <groupId>org.mockito</groupId>

src/main/java/org/datadog/jenkins/plugins/datadog/DatadogGlobalConfiguration.java

@@ -118,6 +118,7 @@ public class DatadogGlobalConfiguration extends GlobalConfiguration {
     private static final String GLOBAL_JOB_TAGS_PROPERTY = "DATADOG_JENKINS_PLUGIN_GLOBAL_JOB_TAGS";
     private static final String EMIT_SECURITY_EVENTS_PROPERTY = "DATADOG_JENKINS_PLUGIN_EMIT_SECURITY_EVENTS";
     private static final String EMIT_SYSTEM_EVENTS_PROPERTY = "DATADOG_JENKINS_PLUGIN_EMIT_SYSTEM_EVENTS";
+    private static final String EMIT_CONFIG_CHANGE_EVENTS_PROPERTY = "DATADOG_JENKINS_PLUGIN_EMIT_CONFIG_CHANGE_EVENTS";
     private static final String INCLUDE_EVENTS_PROPERTY = "DATADOG_JENKINS_PLUGIN_INCLUDE_EVENTS";
     private static final String EXCLUDE_EVENTS_PROPERTY = "DATADOG_JENKINS_PLUGIN_EXCLUDE_EVENTS";
     private static final String COLLECT_BUILD_LOGS_PROPERTY = "DATADOG_JENKINS_PLUGIN_COLLECT_BUILD_LOGS";
@@ -141,6 +142,7 @@ public class DatadogGlobalConfiguration extends GlobalConfiguration {
     private static final Integer DEFAULT_TARGET_LOG_COLLECTION_PORT_VALUE = null;
     private static final boolean DEFAULT_EMIT_SECURITY_EVENTS_VALUE = true;
     private static final boolean DEFAULT_EMIT_SYSTEM_EVENTS_VALUE = true;
+    private static final boolean DEFAULT_EMIT_CONFIG_CHANGE_EVENTS_VALUE = false;
     private static final boolean DEFAULT_COLLECT_BUILD_LOGS_VALUE = false;
     private static final boolean DEFAULT_COLLECT_BUILD_TRACES_VALUE = false;
     private static final boolean DEFAULT_RETRY_LOGS_VALUE = true;
@@ -170,6 +172,7 @@ public class DatadogGlobalConfiguration extends GlobalConfiguration {
     private String excludeEvents = null;
     private boolean emitSecurityEvents = DEFAULT_EMIT_SECURITY_EVENTS_VALUE;
     private boolean emitSystemEvents = DEFAULT_EMIT_SYSTEM_EVENTS_VALUE;
+    private boolean emitConfigChangeEvents = DEFAULT_EMIT_CONFIG_CHANGE_EVENTS_VALUE;
     private boolean collectBuildLogs = DEFAULT_COLLECT_BUILD_LOGS_VALUE;
     private boolean collectBuildTraces = DEFAULT_COLLECT_BUILD_TRACES_VALUE;
     private boolean retryLogs = DEFAULT_RETRY_LOGS_VALUE;
@@ -266,6 +269,11 @@ public void loadEnvVariables() {
             this.globalTagFile = globalTagFileEnvVar;
         }
 
+        String emitConfigChangeEventsEnvVar = System.getenv(EMIT_CONFIG_CHANGE_EVENTS_PROPERTY);
+        if(StringUtils.isNotBlank(emitConfigChangeEventsEnvVar)){
+            this.emitConfigChangeEvents = Boolean.valueOf(emitConfigChangeEventsEnvVar);
+        }
+
         String globalTagsEnvVar = System.getenv(GLOBAL_TAGS_PROPERTY);
         if(StringUtils.isNotBlank(globalTagsEnvVar)){
             this.globalTags = globalTagsEnvVar;
@@ -1203,6 +1211,23 @@ public void setIncluded(final String jobs) {
         this.whitelist = jobs;
     }
 
+    /**
+     * @return - A {@link Boolean} indicating if the user has configured Datadog to emit Config Change events.
+    */
+    public boolean isEmitConfigChangeEvents() {
+        return emitConfigChangeEvents;
+    }
+
+     /**
+     * Used for CasC
+     * accepting a comma-separated string of events.
+     *
+     * @param emitConfigChangeEvents - The checkbox status (checked/unchecked)
+     */
+    @DataBoundSetter
+    public void setEmitConfigChangeEvents(boolean emitConfigChangeEvents) {
+        this.emitConfigChangeEvents = emitConfigChangeEvents;
+    }
     /**
      * Gets the globalTagFile set in the job configuration.
      *

src/test/java/org/datadog/jenkins/plugins/datadog/DatadogGlobalConfigurationTest.java

@@ -3,7 +3,9 @@
 import org.junit.Assert;
 import org.junit.Before;
 import org.junit.ClassRule;
+import org.junit.Rule;
 import org.junit.Test;
+
 import org.jvnet.hudson.test.JenkinsRule;
 
 import hudson.util.Secret;
@@ -14,13 +16,26 @@
 import com.cloudbees.plugins.credentials.CredentialsScope;
 import com.cloudbees.plugins.credentials.CredentialsStore;
 import com.cloudbees.plugins.credentials.domains.Domain;
+
+import io.jenkins.plugins.casc.misc.ConfiguredWithCode;
+import io.jenkins.plugins.casc.misc.JenkinsConfiguredWithCodeRule;
+
 import java.io.IOException;
 
 public class DatadogGlobalConfigurationTest {
 
     @ClassRule
     public static JenkinsRule jenkinsRule = new JenkinsRule();
 
+    @Rule public JenkinsConfiguredWithCodeRule r = new JenkinsConfiguredWithCodeRule();
+
+    @Test
+    @ConfiguredWithCode("test-config.yml")
+    public void TestConfigurationAsCodeCompatibility() throws Exception {
+        DatadogGlobalConfiguration cfg = DatadogUtilities.getDatadogGlobalDescriptor();
+        Assert.assertTrue(cfg.isEmitConfigChangeEvents());
+    }
+
     @Test
     public void testCanGetCredentialFromId() throws IOException {
         CredentialsStore credentialsStore = CredentialsProvider.lookupStores(jenkinsRule).iterator().next();

src/test/resources/org/datadog/jenkins/plugins/datadog/test-config.yml

@@ -0,0 +1,8 @@
+jenkins:
+  systemMessage: "Example of configuring datadog in Jenkins"
+
+unclassified:
+    datadogGlobalConfiguration:
+      reportWith: 'http'
+      targetApiKey: 'test'
+      emitConfigChangeEvents: true