diff --git a/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/gui/OpensteckTelemetryUI.java b/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/gui/OpensteckTelemetryUI.java
index bf8ae4b..3f09f6a 100644
--- a/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/gui/OpensteckTelemetryUI.java
+++ b/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/gui/OpensteckTelemetryUI.java
@@ -16,16 +16,15 @@
 package org.onosproject.openstacktelemetry.gui;
 
 import com.google.common.collect.ImmutableList;
-import org.apache.felix.scr.annotations.Activate;
-import org.apache.felix.scr.annotations.Component;
-import org.apache.felix.scr.annotations.Deactivate;
-import org.apache.felix.scr.annotations.Reference;
-import org.apache.felix.scr.annotations.ReferenceCardinality;
-import org.apache.felix.scr.annotations.Service;
 import org.onosproject.ui.UiExtension;
 import org.onosproject.ui.UiExtensionService;
 import org.onosproject.ui.UiMessageHandlerFactory;
 import org.onosproject.ui.UiView;
+import org.osgi.service.component.annotations.Activate;
+import org.osgi.service.component.annotations.Component;
+import org.osgi.service.component.annotations.Deactivate;
+import org.osgi.service.component.annotations.Reference;
+import org.osgi.service.component.annotations.ReferenceCardinality;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -36,8 +35,7 @@
 /**
  * Mechanism to stream data to the GUI.
  */
-@Component(immediate = true, enabled = true)
-@Service(value = OpensteckTelemetryUI.class)
+@Component(immediate = true, enabled = true, service = OpensteckTelemetryUI.class)
 public class OpensteckTelemetryUI {
     private static final String OPENSTACKTELEMETRY_ID = "openstacktelemetry";
     private static final String OPENSTACKTELEMETRY_TEXT = "Openstack Telemetry";
@@ -46,7 +44,7 @@
 
     private final Logger log = LoggerFactory.getLogger(getClass());
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected UiExtensionService uiExtensionService;
 
     // Factory for UI message handlers
diff --git a/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/GrpcTelemetryConfigManager.java b/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/GrpcTelemetryConfigManager.java
index 60e851e..97ddcb1 100644
--- a/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/GrpcTelemetryConfigManager.java
+++ b/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/GrpcTelemetryConfigManager.java
@@ -15,14 +15,6 @@
  */
 package org.onosproject.openstacktelemetry.impl;
 
-import org.apache.felix.scr.annotations.Activate;
-import org.apache.felix.scr.annotations.Component;
-import org.apache.felix.scr.annotations.Deactivate;
-import org.apache.felix.scr.annotations.Modified;
-import org.apache.felix.scr.annotations.Property;
-import org.apache.felix.scr.annotations.Reference;
-import org.apache.felix.scr.annotations.ReferenceCardinality;
-import org.apache.felix.scr.annotations.Service;
 import org.onlab.util.Tools;
 import org.onosproject.cfg.ComponentConfigService;
 import org.onosproject.openstacktelemetry.api.GrpcTelemetryAdminService;
@@ -30,6 +22,12 @@
 import org.onosproject.openstacktelemetry.api.config.TelemetryConfig;
 import org.onosproject.openstacktelemetry.config.DefaultGrpcTelemetryConfig;
 import org.osgi.service.component.ComponentContext;
+import org.osgi.service.component.annotations.Activate;
+import org.osgi.service.component.annotations.Component;
+import org.osgi.service.component.annotations.Deactivate;
+import org.osgi.service.component.annotations.Modified;
+import org.osgi.service.component.annotations.Reference;
+import org.osgi.service.component.annotations.ReferenceCardinality;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -48,8 +46,7 @@
 /**
  * gRPC server configuration manager for publishing openstack telemetry.
  */
-@Component(immediate = true)
-@Service
+@Component(immediate = true, service = GrpcTelemetryConfigService.class)
 public class GrpcTelemetryConfigManager implements GrpcTelemetryConfigService {
 
     private final Logger log = LoggerFactory.getLogger(getClass());
@@ -60,30 +57,30 @@
     private static final String USE_PLAINTEXT = "usePlaintext";
     private static final String MAX_INBOUND_MSG_SIZE = "maxInboundMsgSize";
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected ComponentConfigService componentConfigService;
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected GrpcTelemetryAdminService grpcTelemetryAdminService;
 
-    @Property(name = ADDRESS, value = DEFAULT_GRPC_SERVER_IP,
-            label = "Default IP address to establish initial connection to gRPC server")
+    //@Property(name = ADDRESS, value = DEFAULT_GRPC_SERVER_IP,
+    //        label = "Default IP address to establish initial connection to gRPC server")
     protected String address = DEFAULT_GRPC_SERVER_IP;
 
-    @Property(name = PORT, intValue = DEFAULT_GRPC_SERVER_PORT,
-            label = "Default port number to establish initial connection to gRPC server")
+    //@Property(name = PORT, intValue = DEFAULT_GRPC_SERVER_PORT,
+    //        label = "Default port number to establish initial connection to gRPC server")
     protected Integer port = DEFAULT_GRPC_SERVER_PORT;
 
-    @Property(name = USE_PLAINTEXT, boolValue = DEFAULT_GRPC_USE_PLAINTEXT,
-            label = "UsePlaintext flag value used for connecting to gRPC server")
+    //@Property(name = USE_PLAINTEXT, boolValue = DEFAULT_GRPC_USE_PLAINTEXT,
+    //        label = "UsePlaintext flag value used for connecting to gRPC server")
     protected Boolean usePlaintext = DEFAULT_GRPC_USE_PLAINTEXT;
 
-    @Property(name = MAX_INBOUND_MSG_SIZE, intValue = DEFAULT_GRPC_MAX_INBOUND_MSG_SIZE,
-            label = "Maximum inbound message size used for communicating with gRPC server")
+    //@Property(name = MAX_INBOUND_MSG_SIZE, intValue = DEFAULT_GRPC_MAX_INBOUND_MSG_SIZE,
+    //        label = "Maximum inbound message size used for communicating with gRPC server")
     protected Integer maxInboundMsgSize = DEFAULT_GRPC_MAX_INBOUND_MSG_SIZE;
 
-    @Property(name = ENABLE_SERVICE, boolValue = DEFAULT_DISABLE,
-            label = "Specify the default behavior of telemetry service")
+    //@Property(name = ENABLE_SERVICE, boolValue = DEFAULT_DISABLE,
+    //        label = "Specify the default behavior of telemetry service")
     protected Boolean enableService = DEFAULT_DISABLE;
 
     @Activate
diff --git a/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/GrpcTelemetryManager.java b/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/GrpcTelemetryManager.java
index 3fcf013..391b1d8 100644
--- a/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/GrpcTelemetryManager.java
+++ b/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/GrpcTelemetryManager.java
@@ -17,29 +17,27 @@
 
 import io.grpc.ManagedChannel;
 import io.grpc.ManagedChannelBuilder;
-import org.apache.felix.scr.annotations.Activate;
-import org.apache.felix.scr.annotations.Component;
-import org.apache.felix.scr.annotations.Deactivate;
-import org.apache.felix.scr.annotations.Reference;
-import org.apache.felix.scr.annotations.ReferenceCardinality;
-import org.apache.felix.scr.annotations.Service;
 import org.onosproject.openstacktelemetry.api.GrpcTelemetryAdminService;
 import org.onosproject.openstacktelemetry.api.OpenstackTelemetryService;
 import org.onosproject.openstacktelemetry.api.config.GrpcTelemetryConfig;
 import org.onosproject.openstacktelemetry.api.config.TelemetryConfig;
+import org.osgi.service.component.annotations.Activate;
+import org.osgi.service.component.annotations.Component;
+import org.osgi.service.component.annotations.Deactivate;
+import org.osgi.service.component.annotations.Reference;
+import org.osgi.service.component.annotations.ReferenceCardinality;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 /**
  * gRPC telemetry manager.
  */
-@Component(immediate = true)
-@Service
+@Component(immediate = true, service = GrpcTelemetryAdminService.class)
 public class GrpcTelemetryManager implements GrpcTelemetryAdminService {
 
     private final Logger log = LoggerFactory.getLogger(getClass());
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected OpenstackTelemetryService openstackTelemetryService;
 
     private ManagedChannel channel = null;
diff --git a/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/InfluxDbTelemetryConfigManager.java b/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/InfluxDbTelemetryConfigManager.java
index 52eac35..e3db947 100644
--- a/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/InfluxDbTelemetryConfigManager.java
+++ b/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/InfluxDbTelemetryConfigManager.java
@@ -15,14 +15,6 @@
  */
 package org.onosproject.openstacktelemetry.impl;
 
-import org.apache.felix.scr.annotations.Activate;
-import org.apache.felix.scr.annotations.Component;
-import org.apache.felix.scr.annotations.Deactivate;
-import org.apache.felix.scr.annotations.Modified;
-import org.apache.felix.scr.annotations.Property;
-import org.apache.felix.scr.annotations.Reference;
-import org.apache.felix.scr.annotations.ReferenceCardinality;
-import org.apache.felix.scr.annotations.Service;
 import org.onlab.util.Tools;
 import org.onosproject.cfg.ComponentConfigService;
 import org.onosproject.openstacktelemetry.api.InfluxDbTelemetryAdminService;
@@ -30,6 +22,12 @@
 import org.onosproject.openstacktelemetry.api.config.TelemetryConfig;
 import org.onosproject.openstacktelemetry.config.DefaultInfluxDbTelemetryConfig;
 import org.osgi.service.component.ComponentContext;
+import org.osgi.service.component.annotations.Activate;
+import org.osgi.service.component.annotations.Component;
+import org.osgi.service.component.annotations.Deactivate;
+import org.osgi.service.component.annotations.Modified;
+import org.osgi.service.component.annotations.Reference;
+import org.osgi.service.component.annotations.ReferenceCardinality;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -49,8 +47,7 @@
 /**
  * InfluxDB server configuration manager for publishing openstack telemetry.
  */
-@Component(immediate = true)
-@Service
+@Component(immediate = true, service = InfluxDbTelemetryConfigService.class)
 public class InfluxDbTelemetryConfigManager implements InfluxDbTelemetryConfigService {
 
     private final Logger log = LoggerFactory.getLogger(getClass());
@@ -64,42 +61,42 @@
     private static final String MEASUREMENT = "measurement";
     private static final String ENABLE_BATCH = "enableBatch";
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected ComponentConfigService componentConfigService;
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected InfluxDbTelemetryAdminService influxDbTelemetryAdminService;
 
-    @Property(name = ADDRESS, value = DEFAULT_INFLUXDB_SERVER_IP,
-            label = "Default IP address to establish initial connection to InfluxDB server")
+    //@Property(name = ADDRESS, value = DEFAULT_INFLUXDB_SERVER_IP,
+    //        label = "Default IP address to establish initial connection to InfluxDB server")
     protected String address = DEFAULT_INFLUXDB_SERVER_IP;
 
-    @Property(name = PORT, intValue = DEFAULT_INFLUXDB_SERVER_PORT,
-            label = "Default port number to establish initial connection to InfluxDB server")
+    //@Property(name = PORT, intValue = DEFAULT_INFLUXDB_SERVER_PORT,
+    //        label = "Default port number to establish initial connection to InfluxDB server")
     protected Integer port = DEFAULT_INFLUXDB_SERVER_PORT;
 
-    @Property(name = USERNAME, value = DEFAULT_INFLUXDB_USERNAME,
-            label = "Username used for authenticating against InfluxDB server")
+    //@Property(name = USERNAME, value = DEFAULT_INFLUXDB_USERNAME,
+    //        label = "Username used for authenticating against InfluxDB server")
     protected String username = DEFAULT_INFLUXDB_USERNAME;
 
-    @Property(name = PASSWORD, value = DEFAULT_INFLUXDB_PASSWORD,
-            label = "Password used for authenticating against InfluxDB server")
+    //@Property(name = PASSWORD, value = DEFAULT_INFLUXDB_PASSWORD,
+    //        label = "Password used for authenticating against InfluxDB server")
     protected String password = DEFAULT_INFLUXDB_PASSWORD;
 
-    @Property(name = DATABASE, value = DEFAULT_INFLUXDB_DATABASE,
-            label = "Database of InfluxDB server")
+    //@Property(name = DATABASE, value = DEFAULT_INFLUXDB_DATABASE,
+    //        label = "Database of InfluxDB server")
     protected String database = DEFAULT_INFLUXDB_DATABASE;
 
-    @Property(name = MEASUREMENT, value = DEFAULT_INFLUXDB_MEASUREMENT,
-            label = "Measurement of InfluxDB server")
+    //@Property(name = MEASUREMENT, value = DEFAULT_INFLUXDB_MEASUREMENT,
+    //        label = "Measurement of InfluxDB server")
     protected String measurement = DEFAULT_INFLUXDB_MEASUREMENT;
 
-    @Property(name = ENABLE_BATCH, boolValue = DEFAULT_INFLUXDB_ENABLE_BATCH,
-            label = "Flag value of enabling batch mode of InfluxDB server")
+    //@Property(name = ENABLE_BATCH, boolValue = DEFAULT_INFLUXDB_ENABLE_BATCH,
+    //        label = "Flag value of enabling batch mode of InfluxDB server")
     protected Boolean enableBatch = DEFAULT_INFLUXDB_ENABLE_BATCH;
 
-    @Property(name = ENABLE_SERVICE, boolValue = DEFAULT_DISABLE,
-            label = "Specify the default behavior of telemetry service")
+    //@Property(name = ENABLE_SERVICE, boolValue = DEFAULT_DISABLE,
+    //        label = "Specify the default behavior of telemetry service")
     protected Boolean enableService = DEFAULT_DISABLE;
 
     @Activate
diff --git a/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/InfluxDbTelemetryManager.java b/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/InfluxDbTelemetryManager.java
index e35d662..16db799 100644
--- a/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/InfluxDbTelemetryManager.java
+++ b/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/InfluxDbTelemetryManager.java
@@ -15,12 +15,6 @@
  */
 package org.onosproject.openstacktelemetry.impl;
 
-import org.apache.felix.scr.annotations.Activate;
-import org.apache.felix.scr.annotations.Component;
-import org.apache.felix.scr.annotations.Deactivate;
-import org.apache.felix.scr.annotations.Reference;
-import org.apache.felix.scr.annotations.ReferenceCardinality;
-import org.apache.felix.scr.annotations.Service;
 import org.influxdb.InfluxDB;
 import org.influxdb.InfluxDBFactory;
 import org.influxdb.dto.BatchPoints;
@@ -32,6 +26,11 @@
 import org.onosproject.openstacktelemetry.api.OpenstackTelemetryService;
 import org.onosproject.openstacktelemetry.api.config.InfluxDbTelemetryConfig;
 import org.onosproject.openstacktelemetry.api.config.TelemetryConfig;
+import org.osgi.service.component.annotations.Activate;
+import org.osgi.service.component.annotations.Component;
+import org.osgi.service.component.annotations.Deactivate;
+import org.osgi.service.component.annotations.Reference;
+import org.osgi.service.component.annotations.ReferenceCardinality;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -40,8 +39,7 @@
 /**
  * InfluxDB telemetry manager.
  */
-@Component(immediate = true)
-@Service
+@Component(immediate = true, service = InfluxDbTelemetryAdminService.class)
 public class InfluxDbTelemetryManager implements InfluxDbTelemetryAdminService {
 
     private final Logger log = LoggerFactory.getLogger(getClass());
@@ -71,7 +69,7 @@
     private static final String ERROR_PKTS = "errorPkts";
     private static final String DROP_PKTS = "dropPkts";
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected OpenstackTelemetryService openstackTelemetryService;
 
     private static final String INFLUX_PROTOCOL = "http";
diff --git a/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/KafkaTelemetryConfigManager.java b/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/KafkaTelemetryConfigManager.java
index 956e275..1212b0b 100644
--- a/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/KafkaTelemetryConfigManager.java
+++ b/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/KafkaTelemetryConfigManager.java
@@ -15,14 +15,6 @@
  */
 package org.onosproject.openstacktelemetry.impl;
 
-import org.apache.felix.scr.annotations.Activate;
-import org.apache.felix.scr.annotations.Component;
-import org.apache.felix.scr.annotations.Deactivate;
-import org.apache.felix.scr.annotations.Modified;
-import org.apache.felix.scr.annotations.Property;
-import org.apache.felix.scr.annotations.Reference;
-import org.apache.felix.scr.annotations.ReferenceCardinality;
-import org.apache.felix.scr.annotations.Service;
 import org.onlab.util.Tools;
 import org.onosproject.cfg.ComponentConfigService;
 import org.onosproject.openstacktelemetry.api.KafkaTelemetryAdminService;
@@ -30,6 +22,12 @@
 import org.onosproject.openstacktelemetry.api.config.TelemetryConfig;
 import org.onosproject.openstacktelemetry.config.DefaultKafkaTelemetryConfig;
 import org.osgi.service.component.ComponentContext;
+import org.osgi.service.component.annotations.Activate;
+import org.osgi.service.component.annotations.Component;
+import org.osgi.service.component.annotations.Deactivate;
+import org.osgi.service.component.annotations.Modified;
+import org.osgi.service.component.annotations.Reference;
+import org.osgi.service.component.annotations.ReferenceCardinality;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -51,8 +49,7 @@
 /**
  * Kafka server configuration manager for publishing openstack telemetry.
  */
-@Component(immediate = true)
-@Service
+@Component(immediate = true, service = KafkaTelemetryConfigService.class)
 public class KafkaTelemetryConfigManager implements KafkaTelemetryConfigService {
 
     private final Logger log = LoggerFactory.getLogger(getClass());
@@ -68,51 +65,51 @@
     private static final String KEY_SERIALIZER = "keySerializer";
     private static final String VALUE_SERIALIZER = "valueSerializer";
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected ComponentConfigService componentConfigService;
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected KafkaTelemetryAdminService kafkaTelemetryAdminService;
 
-    @Property(name = ADDRESS, value = DEFAULT_KAFKA_SERVER_IP,
-            label = "Default IP address to establish initial connection to Kafka server")
+    //@Property(name = ADDRESS, value = DEFAULT_KAFKA_SERVER_IP,
+    //        label = "Default IP address to establish initial connection to Kafka server")
     protected String address = DEFAULT_KAFKA_SERVER_IP;
 
-    @Property(name = PORT, intValue = DEFAULT_KAFKA_SERVER_PORT,
-            label = "Default port number to establish initial connection to Kafka server")
+    //@Property(name = PORT, intValue = DEFAULT_KAFKA_SERVER_PORT,
+    //        label = "Default port number to establish initial connection to Kafka server")
     protected Integer port = DEFAULT_KAFKA_SERVER_PORT;
 
-    @Property(name = RETRIES, intValue = DEFAULT_KAFKA_RETRIES,
-            label = "Number of times the producer can retry to send after first failure")
+    //@Property(name = RETRIES, intValue = DEFAULT_KAFKA_RETRIES,
+    //        label = "Number of times the producer can retry to send after first failure")
     protected int retries = DEFAULT_KAFKA_RETRIES;
 
-    @Property(name = REQUIRED_ACKS, value = DEFAULT_KAFKA_REQUIRED_ACKS,
-            label = "Producer will get an acknowledgement after the leader has replicated the data")
+    //@Property(name = REQUIRED_ACKS, value = DEFAULT_KAFKA_REQUIRED_ACKS,
+    //        label = "Producer will get an acknowledgement after the leader has replicated the data")
     protected String requiredAcks = DEFAULT_KAFKA_REQUIRED_ACKS;
 
-    @Property(name = BATCH_SIZE, intValue = DEFAULT_KAFKA_BATCH_SIZE,
-            label = "The largest record batch size allowed by Kafka")
+    //@Property(name = BATCH_SIZE, intValue = DEFAULT_KAFKA_BATCH_SIZE,
+    //        label = "The largest record batch size allowed by Kafka")
     protected Integer batchSize = DEFAULT_KAFKA_BATCH_SIZE;
 
-    @Property(name = LINGER_MS, intValue = DEFAULT_KAFKA_LINGER_MS,
-            label = "The producer groups together any records that arrive in " +
-                    "between request transmissions into a single batched request")
+    //@Property(name = LINGER_MS, intValue = DEFAULT_KAFKA_LINGER_MS,
+    //        label = "The producer groups together any records that arrive in " +
+    //                "between request transmissions into a single batched request")
     protected Integer lingerMs = DEFAULT_KAFKA_LINGER_MS;
 
-    @Property(name = MEMORY_BUFFER, intValue = DEFAULT_KAFKA_MEMORY_BUFFER,
-            label = "The total memory used for log cleaner I/O buffers across all cleaner threads")
+    //@Property(name = MEMORY_BUFFER, intValue = DEFAULT_KAFKA_MEMORY_BUFFER,
+    //        label = "The total memory used for log cleaner I/O buffers across all cleaner threads")
     protected Integer memoryBuffer = DEFAULT_KAFKA_MEMORY_BUFFER;
 
-    @Property(name = KEY_SERIALIZER, value = DEFAULT_KAFKA_KEY_SERIALIZER,
-            label = "Serializer class for key that implements the Serializer interface")
+    //@Property(name = KEY_SERIALIZER, value = DEFAULT_KAFKA_KEY_SERIALIZER,
+    //        label = "Serializer class for key that implements the Serializer interface")
     protected String keySerializer = DEFAULT_KAFKA_KEY_SERIALIZER;
 
-    @Property(name = VALUE_SERIALIZER, value = DEFAULT_KAFKA_VALUE_SERIALIZER,
-            label = "Serializer class for value that implements the Serializer interface")
+    //@Property(name = VALUE_SERIALIZER, value = DEFAULT_KAFKA_VALUE_SERIALIZER,
+    //        label = "Serializer class for value that implements the Serializer interface")
     protected String valueSerializer = DEFAULT_KAFKA_VALUE_SERIALIZER;
 
-    @Property(name = ENABLE_SERVICE, boolValue = DEFAULT_DISABLE,
-            label = "Specify the default behavior of telemetry service")
+    //@Property(name = ENABLE_SERVICE, boolValue = DEFAULT_DISABLE,
+    //        label = "Specify the default behavior of telemetry service")
     protected Boolean enableService = DEFAULT_DISABLE;
 
     @Activate
diff --git a/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/KafkaTelemetryManager.java b/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/KafkaTelemetryManager.java
index 56a0e81..e895e46 100644
--- a/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/KafkaTelemetryManager.java
+++ b/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/KafkaTelemetryManager.java
@@ -15,12 +15,6 @@
  */
 package org.onosproject.openstacktelemetry.impl;
 
-import org.apache.felix.scr.annotations.Activate;
-import org.apache.felix.scr.annotations.Component;
-import org.apache.felix.scr.annotations.Deactivate;
-import org.apache.felix.scr.annotations.Reference;
-import org.apache.felix.scr.annotations.ReferenceCardinality;
-import org.apache.felix.scr.annotations.Service;
 import org.apache.kafka.clients.producer.KafkaProducer;
 import org.apache.kafka.clients.producer.Producer;
 import org.apache.kafka.clients.producer.ProducerRecord;
@@ -29,6 +23,11 @@
 import org.onosproject.openstacktelemetry.api.OpenstackTelemetryService;
 import org.onosproject.openstacktelemetry.api.config.KafkaTelemetryConfig;
 import org.onosproject.openstacktelemetry.api.config.TelemetryConfig;
+import org.osgi.service.component.annotations.Activate;
+import org.osgi.service.component.annotations.Component;
+import org.osgi.service.component.annotations.Deactivate;
+import org.osgi.service.component.annotations.Reference;
+import org.osgi.service.component.annotations.ReferenceCardinality;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -38,8 +37,7 @@
 /**
  * Kafka telemetry manager.
  */
-@Component(immediate = true)
-@Service
+@Component(immediate = true, service = KafkaTelemetryAdminService.class)
 public class KafkaTelemetryManager implements KafkaTelemetryAdminService {
 
     private final Logger log = LoggerFactory.getLogger(getClass());
@@ -53,7 +51,7 @@
     private static final String KEY_SERIALIZER = "key.serializer";
     private static final String VALUE_SERIALIZER = "value.serializer";
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected OpenstackTelemetryService openstackTelemetryService;
 
     private Producer<String, byte[]> producer = null;
diff --git a/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/OpenstackTelemetryManager.java b/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/OpenstackTelemetryManager.java
index 761e01b..891482a 100644
--- a/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/OpenstackTelemetryManager.java
+++ b/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/OpenstackTelemetryManager.java
@@ -17,12 +17,6 @@
 
 import com.google.common.collect.ImmutableSet;
 import com.google.common.collect.Lists;
-import org.apache.felix.scr.annotations.Activate;
-import org.apache.felix.scr.annotations.Component;
-import org.apache.felix.scr.annotations.Deactivate;
-import org.apache.felix.scr.annotations.Reference;
-import org.apache.felix.scr.annotations.ReferenceCardinality;
-import org.apache.felix.scr.annotations.Service;
 import org.apache.kafka.clients.producer.ProducerRecord;
 import org.onosproject.cfg.ComponentConfigService;
 import org.onosproject.openstacktelemetry.api.FlowInfo;
@@ -33,6 +27,11 @@
 import org.onosproject.openstacktelemetry.api.RestTelemetryService;
 import org.onosproject.openstacktelemetry.api.TelemetryService;
 import org.onosproject.openstacktelemetry.codec.TinaMessageByteBufferCodec;
+import org.osgi.service.component.annotations.Activate;
+import org.osgi.service.component.annotations.Component;
+import org.osgi.service.component.annotations.Deactivate;
+import org.osgi.service.component.annotations.Reference;
+import org.osgi.service.component.annotations.ReferenceCardinality;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -48,15 +47,14 @@
 /**
  * Openstack telemetry manager.
  */
-@Component(immediate = true)
-@Service
+@Component(immediate = true, service = OpenstackTelemetryService.class)
 public class OpenstackTelemetryManager implements OpenstackTelemetryService {
 
     private final Logger log = LoggerFactory.getLogger(getClass());
 
     private static final String ENABLE_SERVICE = "enableService";
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected ComponentConfigService componentConfigService;
 
     private List<TelemetryService> telemetryServices = Lists.newArrayList();
diff --git a/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/RestTelemetryConfigManager.java b/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/RestTelemetryConfigManager.java
index 25c7afe..e3b76b6 100644
--- a/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/RestTelemetryConfigManager.java
+++ b/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/RestTelemetryConfigManager.java
@@ -15,14 +15,6 @@
  */
 package org.onosproject.openstacktelemetry.impl;
 
-import org.apache.felix.scr.annotations.Activate;
-import org.apache.felix.scr.annotations.Component;
-import org.apache.felix.scr.annotations.Deactivate;
-import org.apache.felix.scr.annotations.Modified;
-import org.apache.felix.scr.annotations.Property;
-import org.apache.felix.scr.annotations.Reference;
-import org.apache.felix.scr.annotations.ReferenceCardinality;
-import org.apache.felix.scr.annotations.Service;
 import org.onlab.util.Tools;
 import org.onosproject.cfg.ComponentConfigService;
 import org.onosproject.openstacktelemetry.api.RestTelemetryAdminService;
@@ -30,6 +22,12 @@
 import org.onosproject.openstacktelemetry.api.config.TelemetryConfig;
 import org.onosproject.openstacktelemetry.config.DefaultRestTelemetryConfig;
 import org.osgi.service.component.ComponentContext;
+import org.osgi.service.component.annotations.Activate;
+import org.osgi.service.component.annotations.Component;
+import org.osgi.service.component.annotations.Deactivate;
+import org.osgi.service.component.annotations.Modified;
+import org.osgi.service.component.annotations.Reference;
+import org.osgi.service.component.annotations.ReferenceCardinality;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -48,8 +46,7 @@
 /**
  * REST server configuration manager for publishing openstack telemetry.
  */
-@Component(immediate = true)
-@Service
+@Component(immediate = true, service = RestTelemetryConfigService.class)
 public class RestTelemetryConfigManager implements RestTelemetryConfigService {
 
     private final Logger log = LoggerFactory.getLogger(getClass());
@@ -62,38 +59,38 @@
     private static final String REQUEST_MEDIA_TYPE = "requestMediaType";
     private static final String RESPONSE_MEDIA_TYPE = "responseMediaType";
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected ComponentConfigService componentConfigService;
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected RestTelemetryAdminService restTelemetryAdminService;
 
-    @Property(name = ADDRESS, value = DEFAULT_REST_SERVER_IP,
-            label = "Default IP address to establish initial connection to REST server")
+    //@Property(name = ADDRESS, value = DEFAULT_REST_SERVER_IP,
+    //        label = "Default IP address to establish initial connection to REST server")
     protected String address = DEFAULT_REST_SERVER_IP;
 
-    @Property(name = PORT, intValue = DEFAULT_REST_SERVER_PORT,
-            label = "Default port number to establish initial connection to REST server")
+    //@Property(name = PORT, intValue = DEFAULT_REST_SERVER_PORT,
+    //        label = "Default port number to establish initial connection to REST server")
     protected Integer port = DEFAULT_REST_SERVER_PORT;
 
-    @Property(name = ENDPOINT, value = DEFAULT_REST_ENDPOINT,
-            label = "Endpoint of REST server")
+    //@Property(name = ENDPOINT, value = DEFAULT_REST_ENDPOINT,
+    //        label = "Endpoint of REST server")
     protected String endpoint = DEFAULT_REST_ENDPOINT;
 
-    @Property(name = METHOD, value = DEFAULT_REST_METHOD,
-            label = "HTTP method of REST server")
+    //@Property(name = METHOD, value = DEFAULT_REST_METHOD,
+    //        label = "HTTP method of REST server")
     protected String method = DEFAULT_REST_METHOD;
 
-    @Property(name = REQUEST_MEDIA_TYPE, value = DEFAULT_REST_REQUEST_MEDIA_TYPE,
-            label = "Request media type of REST server")
+    //@Property(name = REQUEST_MEDIA_TYPE, value = DEFAULT_REST_REQUEST_MEDIA_TYPE,
+    //        label = "Request media type of REST server")
     protected String requestMediaType = DEFAULT_REST_REQUEST_MEDIA_TYPE;
 
-    @Property(name = RESPONSE_MEDIA_TYPE, value = DEFAULT_REST_RESPONSE_MEDIA_TYPE,
-            label = "Response media type of REST server")
+    //@Property(name = RESPONSE_MEDIA_TYPE, value = DEFAULT_REST_RESPONSE_MEDIA_TYPE,
+    //        label = "Response media type of REST server")
     protected String responseMediaType = DEFAULT_REST_RESPONSE_MEDIA_TYPE;
 
-    @Property(name = ENABLE_SERVICE, boolValue = DEFAULT_DISABLE,
-            label = "Specify the default behavior of telemetry service")
+    //@Property(name = ENABLE_SERVICE, boolValue = DEFAULT_DISABLE,
+    //        label = "Specify the default behavior of telemetry service")
     protected Boolean enableService = DEFAULT_DISABLE;
 
     @Activate
diff --git a/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/RestTelemetryManager.java b/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/RestTelemetryManager.java
index f94748c..9b4aaf9 100644
--- a/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/RestTelemetryManager.java
+++ b/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/RestTelemetryManager.java
@@ -15,16 +15,15 @@
  */
 package org.onosproject.openstacktelemetry.impl;
 
-import org.apache.felix.scr.annotations.Activate;
-import org.apache.felix.scr.annotations.Component;
-import org.apache.felix.scr.annotations.Deactivate;
-import org.apache.felix.scr.annotations.Reference;
-import org.apache.felix.scr.annotations.ReferenceCardinality;
-import org.apache.felix.scr.annotations.Service;
 import org.onosproject.openstacktelemetry.api.OpenstackTelemetryService;
 import org.onosproject.openstacktelemetry.api.RestTelemetryAdminService;
 import org.onosproject.openstacktelemetry.api.config.RestTelemetryConfig;
 import org.onosproject.openstacktelemetry.api.config.TelemetryConfig;
+import org.osgi.service.component.annotations.Activate;
+import org.osgi.service.component.annotations.Component;
+import org.osgi.service.component.annotations.Deactivate;
+import org.osgi.service.component.annotations.Reference;
+import org.osgi.service.component.annotations.ReferenceCardinality;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -37,8 +36,7 @@
 /**
  * REST telemetry manager.
  */
-@Component(immediate = true)
-@Service
+@Component(immediate = true, service = RestTelemetryAdminService.class)
 public class RestTelemetryManager implements RestTelemetryAdminService {
 
     private final Logger log = LoggerFactory.getLogger(getClass());
@@ -47,7 +45,7 @@
     private static final String POST_METHOD = "POST";
     private static final String GET_METHOD  = "GET";
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected OpenstackTelemetryService openstackTelemetryService;
 
     private WebTarget target = null;
diff --git a/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/StatsFlowRuleManager.java b/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/StatsFlowRuleManager.java
index f1318de..5ffd40c 100644
--- a/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/StatsFlowRuleManager.java
+++ b/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/StatsFlowRuleManager.java
@@ -17,14 +17,6 @@
 
 import com.google.common.collect.Maps;
 import com.google.common.collect.Sets;
-import org.apache.felix.scr.annotations.Activate;
-import org.apache.felix.scr.annotations.Component;
-import org.apache.felix.scr.annotations.Deactivate;
-import org.apache.felix.scr.annotations.Modified;
-import org.apache.felix.scr.annotations.Property;
-import org.apache.felix.scr.annotations.Reference;
-import org.apache.felix.scr.annotations.ReferenceCardinality;
-import org.apache.felix.scr.annotations.Service;
 import org.onlab.packet.IpAddress;
 import org.onlab.packet.IpPrefix;
 import org.onlab.packet.MacAddress;
@@ -71,6 +63,12 @@
 import org.onosproject.openstacktelemetry.api.StatsFlowRuleAdminService;
 import org.onosproject.openstacktelemetry.api.StatsInfo;
 import org.osgi.service.component.ComponentContext;
+import org.osgi.service.component.annotations.Activate;
+import org.osgi.service.component.annotations.Component;
+import org.osgi.service.component.annotations.Deactivate;
+import org.osgi.service.component.annotations.Modified;
+import org.osgi.service.component.annotations.Reference;
+import org.osgi.service.component.annotations.ReferenceCardinality;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -115,8 +113,7 @@
 /**
  * Flow rule manager for network statistics of a VM.
  */
-@Component(immediate = true)
-@Service
+@Component(immediate = true, service = StatsFlowRuleAdminService.class)
 public class StatsFlowRuleManager implements StatsFlowRuleAdminService {
 
     private final Logger log = LoggerFactory.getLogger(getClass());
@@ -155,59 +152,59 @@
 
     private static final boolean RECOVER_FROM_FAILURE = true;
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected CoreService coreService;
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected FlowRuleService flowRuleService;
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected HostService hostService;
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected DeviceService deviceService;
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected DriverService driverService;
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected ComponentConfigService componentConfigService;
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected MastershipService mastershipService;
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected OpenstackNetworkService osNetworkService;
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected InstancePortService instPortService;
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected OpenstackNodeService osNodeService;
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected OpenstackTelemetryService telemetryService;
 
-    @Property(name = REVERSE_PATH_STATS, boolValue = DEFAULT_REVERSE_PATH_STATS,
-            label = "A flag which indicates whether to install the rules for " +
-                    "collecting the flow-based stats for reversed path.")
+    //@Property(name = REVERSE_PATH_STATS, boolValue = DEFAULT_REVERSE_PATH_STATS,
+    //        label = "A flag which indicates whether to install the rules for " +
+    //                "collecting the flow-based stats for reversed path.")
     private boolean reversePathStats = DEFAULT_REVERSE_PATH_STATS;
 
-    @Property(name = EGRESS_STATS, boolValue = DEFAULT_EGRESS_STATS,
-            label = "A flag which indicates whether to install the rules for " +
-                    "collecting the flow-based stats for egress port.")
+    //@Property(name = EGRESS_STATS, boolValue = DEFAULT_EGRESS_STATS,
+    //        label = "A flag which indicates whether to install the rules for " +
+    //                "collecting the flow-based stats for egress port.")
     private boolean egressStats = DEFAULT_EGRESS_STATS;
 
-    @Property(name = PORT_STATS, boolValue = DEFAULT_PORT_STATS,
-            label = "A flag which indicates whether to collect port TX & RX stats.")
+    //@Property(name = PORT_STATS, boolValue = DEFAULT_PORT_STATS,
+    //        label = "A flag which indicates whether to collect port TX & RX stats.")
     private boolean portStats = DEFAULT_PORT_STATS;
 
-    @Property(name = MONITOR_OVERLAY, boolValue = DEFAULT_MONITOR_OVERLAY,
-            label = "A flag which indicates whether to monitor overlay network port stats.")
+    //@Property(name = MONITOR_OVERLAY, boolValue = DEFAULT_MONITOR_OVERLAY,
+    //        label = "A flag which indicates whether to monitor overlay network port stats.")
     private boolean monitorOverlay = DEFAULT_MONITOR_OVERLAY;
 
-    @Property(name = MONITOR_UNDERLAY, boolValue = DEFAULT_MONITOR_UNDERLAY,
-            label = "A flag which indicates whether to monitor underlay network port stats.")
+    //@Property(name = MONITOR_UNDERLAY, boolValue = DEFAULT_MONITOR_UNDERLAY,
+    //        label = "A flag which indicates whether to monitor underlay network port stats.")
     private boolean monitorUnderlay = DEFAULT_MONITOR_UNDERLAY;
 
     private ApplicationId telemetryAppId;
diff --git a/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/web/OpenstackTelemetryCodecRegister.java b/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/web/OpenstackTelemetryCodecRegister.java
index 5b3ec7e..c8bfeb5 100644
--- a/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/web/OpenstackTelemetryCodecRegister.java
+++ b/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/web/OpenstackTelemetryCodecRegister.java
@@ -15,11 +15,11 @@
  */
 package org.onosproject.openstacktelemetry.web;
 
-import org.apache.felix.scr.annotations.Activate;
-import org.apache.felix.scr.annotations.Component;
-import org.apache.felix.scr.annotations.Deactivate;
-import org.apache.felix.scr.annotations.Reference;
-import org.apache.felix.scr.annotations.ReferenceCardinality;
+import org.osgi.service.component.annotations.Activate;
+import org.osgi.service.component.annotations.Component;
+import org.osgi.service.component.annotations.Deactivate;
+import org.osgi.service.component.annotations.Reference;
+import org.osgi.service.component.annotations.ReferenceCardinality;
 import org.onosproject.codec.CodecService;
 import org.onosproject.openstacktelemetry.api.FlowInfo;
 import org.onosproject.openstacktelemetry.api.StatsFlowRule;
@@ -38,7 +38,7 @@
 
     private final org.slf4j.Logger log = getLogger(getClass());
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected CodecService codecService;
 
     @Activate