tests: Coap client destroy on processAfterTest at AbstractCoapIntegrationTest

@@ -52,6 +52,16 @@ import static org.junit.Assert.assertNotNull;
 @Slf4j
 public abstract class AbstractCoapIntegrationTest extends AbstractTransportIntegrationTest {
 
+    protected CoapClient client;
+
+    @Override
+    protected void processAfterTest() throws Exception {
+        if (client != null) {
+            client.shutdown();
+        }
+        super.processAfterTest();
+    }
+
     protected void processBeforeTest(String deviceName, CoapDeviceType coapDeviceType, TransportPayloadType payloadType) throws Exception {
         this.processBeforeTest(deviceName, coapDeviceType, payloadType, null, null, null, null, null, null, DeviceProfileProvisionType.DISABLED);
     }

@@ -75,7 +75,7 @@ public abstract class AbstractCoapAttributesRequestIntegrationTest extends Abstr
 
         String keys = "attribute1,attribute2,attribute3,attribute4,attribute5";
         String featureTokenUrl = getFeatureTokenUrl(accessToken, FeatureType.ATTRIBUTES) + "?clientKeys=" + keys + "&sharedKeys=" + keys;
-        CoapClient client = getCoapClient(featureTokenUrl);
+        client = getCoapClient(featureTokenUrl);
 
         CoapResponse getAttributesResponse = client.setTimeout(CLIENT_REQUEST_TIMEOUT).get();
         validateResponse(getAttributesResponse);
@@ -83,7 +83,7 @@ public abstract class AbstractCoapAttributesRequestIntegrationTest extends Abstr
 
     protected void postAttributes() throws Exception {
         doPostAsync("/api/plugins/telemetry/DEVICE/" + savedDevice.getId().getId() + "/attributes/SHARED_SCOPE", POST_ATTRIBUTES_PAYLOAD, String.class, status().isOk());
-        CoapClient client = getCoapClient(FeatureType.ATTRIBUTES);
+        client = getCoapClient(FeatureType.ATTRIBUTES);
         CoapResponse coapResponse = client.setTimeout(CLIENT_REQUEST_TIMEOUT).post(POST_ATTRIBUTES_PAYLOAD.getBytes(), MediaTypeRegistry.APPLICATION_JSON);
         assertEquals(CoAP.ResponseCode.CREATED, coapResponse.getCode());
     }

@@ -21,7 +21,6 @@ import com.google.protobuf.DynamicMessage;
 import com.google.protobuf.InvalidProtocolBufferException;
 import com.squareup.wire.schema.internal.parser.ProtoFileElement;
 import lombok.extern.slf4j.Slf4j;
-import org.eclipse.californium.core.CoapClient;
 import org.eclipse.californium.core.CoapResponse;
 import org.eclipse.californium.core.coap.CoAP;
 import org.eclipse.californium.core.coap.MediaTypeRegistry;
@@ -124,7 +123,7 @@ public abstract class AbstractCoapAttributesRequestProtoIntegrationTest extends
                 .setField(postAttributesMsgDescriptor.findFieldByName("attribute5"), jsonObject)
                 .build();
         byte[] payload = postAttributesMsg.toByteArray();
-        CoapClient client = getCoapClient(FeatureType.ATTRIBUTES);
+        client = getCoapClient(FeatureType.ATTRIBUTES);
         CoapResponse coapResponse = client.setTimeout(CLIENT_REQUEST_TIMEOUT).post(payload, MediaTypeRegistry.APPLICATION_JSON);
         assertEquals(CoAP.ResponseCode.CREATED, coapResponse.getCode());
     }

@@ -71,7 +71,7 @@ public abstract class AbstractCoapAttributesUpdatesIntegrationTest extends Abstr
         if (!emptyCurrentStateNotification) {
             doPostAsync("/api/plugins/telemetry/DEVICE/" + savedDevice.getId().getId() + "/attributes/SHARED_SCOPE", POST_ATTRIBUTES_PAYLOAD_ON_CURRENT_STATE_NOTIFICATION, String.class, status().isOk());
         }
-        CoapClient client = getCoapClient(FeatureType.ATTRIBUTES);
+        client = getCoapClient(FeatureType.ATTRIBUTES);
 
         CountDownLatch latch = new CountDownLatch(1);
         TestCoapCallback callback = new TestCoapCallback(latch);

@@ -90,7 +90,7 @@ public abstract class AbstractCoapClaimDeviceTest extends AbstractCoapIntegratio
 
     protected void processTestClaimingDevice(boolean emptyPayload) throws Exception {
         log.warn("[testClaimingDevice] Device: {}, Transport type: {}", savedDevice.getName(), savedDevice.getType());
-        CoapClient client = getCoapClient(FeatureType.CLAIM);
+        client = getCoapClient(FeatureType.CLAIM);
         byte[] payloadBytes;
         byte[] failurePayloadBytes;
         if (emptyPayload) {

@@ -49,7 +49,7 @@ public abstract class AbstractCoapClaimProtoDeviceTest extends AbstractCoapClaim
 
     @Override
     protected void processTestClaimingDevice(boolean emptyPayload) throws Exception {
-        CoapClient client = getCoapClient(FeatureType.CLAIM);
+        client = getCoapClient(FeatureType.CLAIM);
         byte[] payloadBytes;
         if (emptyPayload) {
             TransportApiProtos.ClaimDevice claimDevice = getClaimDevice(0, emptyPayload);

@@ -180,7 +180,7 @@ public abstract class AbstractCoapProvisionJsonDeviceTest extends AbstractCoapIn
 
     private CoapResponse createCoapClientAndPublish(String deviceCredentials) throws Exception {
         String provisionRequestMsg = createTestProvisionMessage(deviceCredentials);
-        CoapClient client = getCoapClient(FeatureType.PROVISION);
+        client = getCoapClient(FeatureType.PROVISION);
         return postProvision(client, provisionRequestMsg.getBytes());
     }
 

@@ -176,7 +176,7 @@ public abstract class AbstractCoapProvisionProtoDeviceTest extends AbstractCoapI
     }
 
     private CoapResponse createCoapClientAndPublish(byte[] provisionRequestMsg) throws Exception {
-        CoapClient client = getCoapClient(FeatureType.PROVISION);
+        client = getCoapClient(FeatureType.PROVISION);
         return postProvision(client, provisionRequestMsg);
     }
 

@@ -54,7 +54,7 @@ public abstract class AbstractCoapServerSideRpcIntegrationTest extends AbstractC
     }
 
     protected void processOneWayRpcTest() throws Exception {
-        CoapClient client = getCoapClient(FeatureType.RPC);
+        client = getCoapClient(FeatureType.RPC);
         client.useCONs();
 
         CountDownLatch latch = new CountDownLatch(1);
@@ -82,7 +82,7 @@ public abstract class AbstractCoapServerSideRpcIntegrationTest extends AbstractC
     }
 
     protected void processTwoWayRpcTest(String expectedResponseResult) throws Exception {
-        CoapClient client = getCoapClient(FeatureType.RPC);
+        client = getCoapClient(FeatureType.RPC);
         client.useCONs();
 
         CountDownLatch latch = new CountDownLatch(1);

@@ -69,7 +69,7 @@ public abstract class AbstractCoapAttributesIntegrationTest extends AbstractCoap
     }
 
     protected void processAttributesTest(List<String> expectedKeys, byte[] payload, boolean presenceFieldsTest) throws Exception {
-        CoapClient client = getCoapClient(FeatureType.ATTRIBUTES);
+        client = getCoapClient(FeatureType.ATTRIBUTES);
 
         postAttributes(client, payload);
 

@@ -71,8 +71,8 @@ public abstract class AbstractCoapTimeseriesIntegrationTest extends AbstractCoap
     }
 
     protected void processTestPostTelemetry(byte[] payloadBytes, List<String> expectedKeys, boolean withTs, boolean presenceFieldsTest) throws Exception {
-        CoapClient coapClient = getCoapClient(FeatureType.TELEMETRY);
-        postTelemetry(coapClient, payloadBytes);
+        client = getCoapClient(FeatureType.TELEMETRY);
+        postTelemetry(client, payloadBytes);
 
         String deviceId = savedDevice.getId().getId().toString();