Improve jclouds handled instance types synchronization with node candidates retrieval

build.gradle

@@ -46,6 +46,7 @@ dependencies {
     compile group: 'com.fasterxml.jackson.dataformat', name: 'jackson-dataformat-csv', version: '2.12.1'
     compile group: 'org.eclipse.emf', name: 'org.eclipse.emf.common', version: '2.20.0'
     compile group: 'org.apache.commons', name: 'commons-lang3', version: '3.11'
+    compile group: 'org.apache.jclouds.api', name: 'ec2', version: '2.2.1'
     annotationProcessor "org.projectlombok:lombok:1.18.12"
     compile 'org.junit.jupiter:junit-jupiter:5.6.2'
     testImplementation 'org.mockito:mockito-inline:3.7.7'

pom.xml

@@ -101,6 +101,12 @@
       <version>3.11</version>
       <scope>compile</scope>
     </dependency>
+    <dependency>
+      <groupId>org.apache.jclouds.api</groupId>
+      <artifactId>ec2</artifactId>
+      <version>2.2.1</version>
+      <scope>compile</scope>
+    </dependency>
     <dependency>
       <groupId>junit</groupId>
       <artifactId>junit</artifactId>

src/main/java/org/activeeon/morphemic/PAGateway.java

@@ -5,10 +5,7 @@ import org.activeeon.morphemic.application.deployment.PASchedulerGateway;
 import org.activeeon.morphemic.infrastructure.deployment.PAConnectorIaasGateway;
 import org.activeeon.morphemic.infrastructure.deployment.PAResourceManagerGateway;
 import org.activeeon.morphemic.model.*;
-import org.activeeon.morphemic.service.EntityManagerHelper;
-import org.activeeon.morphemic.service.NodeCandidateUtils;
-import org.activeeon.morphemic.service.TemporaryFilesHelper;
-import org.activeeon.morphemic.service.UpdatingNodeCandidatesThread;
+import org.activeeon.morphemic.service.*;
 import org.apache.commons.lang3.Validate;
 import org.apache.log4j.Logger;
 import org.codehaus.jackson.map.ObjectMapper;
@@ -285,11 +282,11 @@ public class PAGateway {
         List<NodeCandidate> allNodeCandidates = EntityManagerHelper.createQuery("SELECT nc FROM NodeCandidate nc",
                 NodeCandidate.class).getResultList();
         allNodeCandidates.forEach(nodeCandidate -> {
-            // Hardware types t3a and t4g are not YET, handled by jclouds.
-            if (NodeCandidateUtils.verifyAllFilters(requirements, nodeCandidate) &&
-                    !nodeCandidate.getHardware().getName().startsWith("t3a") &&
-                    !nodeCandidate.getHardware().getName().startsWith("t4g")) {
-                filteredNodeCandidates.add(nodeCandidate);
+            if (JCloudsInstancesUtils.isHandledHardwareInstanceType(nodeCandidate.getCloud().getApi().getProviderName(),
+                    nodeCandidate.getHardware().getName())) {
+                if (NodeCandidateUtils.verifyAllFilters(requirements, nodeCandidate)) {
+                    filteredNodeCandidates.add(nodeCandidate);
+                }
             }
         });
         return filteredNodeCandidates;

src/main/java/org/activeeon/morphemic/service/JCloudsInstancesUtils.java

+package org.activeeon.morphemic.service;
+
+import org.apache.log4j.Logger;
+import org.jclouds.ec2.domain.InstanceType;
+
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.Set;
+
+public class JCloudsInstancesUtils {
+
+    private static final Set<String> handledAWSInstanceTypes;
+
+    private static final Logger LOGGER = Logger.getLogger(JCloudsInstancesUtils.class);
+
+    static {
+        handledAWSInstanceTypes = new HashSet<>();
+        Arrays.stream(InstanceType.class.getFields()).forEach(field -> {
+            try {
+                handledAWSInstanceTypes.add(field.get(InstanceType.class).toString());
+            } catch (IllegalAccessException e) {
+                LOGGER.warn(e.getStackTrace());
+            }
+        });
+    }
+
+    private JCloudsInstancesUtils() {
+    }
+
+    /**
+     * Some hardware instance types (like t3a and t4g for AWS) are not YET, handled by jclouds.
+     * This method is here to check if the instance type is handled or not.
+     * @param providerName The Cloud provider id
+     * @param instanceType The instance type to be checked
+     * @return true if the instance type is handled by jclouds, false otherwise
+     */
+    public static boolean isHandledHardwareInstanceType(String providerName, String instanceType) {
+        if ("aws-ec2".equals(providerName))
+            return handledAWSInstanceTypes.contains(instanceType);
+        // TODO: To check if for other cloud providers all instance types are handled by JClouds
+        return true;
+    }
+}