Update HV-VES docs troubleshooting guide

Align troubleshooting guide to recently introduced changes in logging and error handling

Change-Id: Ia80bee6244b147f911c8d3ad89ec5418b06db67f
Signed-off-by: Jakub Dudycz <jakub.dudycz@nokia.com>
Issue-ID: DCAEGEN2-1044

1 files changed, 505 insertions, 222 deletions

diff --git a/docs/sections/services/ves-hv/troubleshooting.rst b/docs/sections/services/ves-hv/troubleshooting.rst
index 722e64c3..3defe7f1 100644
--- a/docs/sections/services/ves-hv/troubleshooting.rst
+++ b/docs/sections/services/ves-hv/troubleshooting.rst
@@ -6,6 +6,34 @@
 Troubleshooting
 ===============
 
+**NOTE**
+
+According to **ONAP** logging policy, **HV-VES** logs contain all required markers as well as service and client specific Mapped Diagnostic Context (later referred as MDC)
+
+Default console log pattern:
+
+::
+
+        | %date{"yyyy-MM-dd'T'HH:mm:ss.SSSXXX", UTC}\t| %thread\t| %highlight(%-5level)\t| %msg\t| %marker\t| %rootException\t| %mdc\t| %thread
+
+A sample, fully qualified message implementing this pattern:
+
+::
+
+        | 2018-12-18T13:12:44.369Z	 | p.dcae.collectors.veshv.impl.socket.NettyTcpServer	 | DEBUG	 | Client connection request received	 | ENTRY	 | 	 | RequestID=d7762b18-854c-4b8c-84aa-95762c6f8e62, InstanceID=9b9799ca-33a5-4f61-ba33-5c7bf7e72d07, InvocationID=b13d34ba-e1cd-4816-acda-706415308107, PartnerName=C=PL, ST=DL, L=Wroclaw, O=Nokia, OU=MANO, CN=dcaegen2-hvves-client, StatusCode=INPROGRESS, ClientIPAddress=192.168.0.9, ServerFQDN=a4ca8f96c7e5	 | reactor-tcp-nio-2
+
+
+For simplicity, all log messages in this section are shortened to contain only:
+    * logger name
+    * log level
+    * message
+
+Error and warning logs contain also:
+    * exception message
+    * stack trace
+
+**Do not rely on exact log messages or their presence, as they are often subject to change.**
+
 Deployment/Installation errors
 ------------------------------
 
@@ -13,37 +41,39 @@ Deployment/Installation errors
 
 ::
 
-  Unexpected error when parsing command line arguments
-  usage: java org.onap.dcae.collectors.veshv.main.MainKt
-  Required parameters: p, c
-  -c,--config-url <arg>              URL of ves configuration on consul
-  -d,--first-request-delay <arg>     Delay of first request to consul in
-                    seconds
-  -H,--health-check-api-port <arg>   Health check rest api listen port
-  -I,--request-interval <arg>        Interval of consul configuration
-                    requests in seconds
-  -i,--idle-timeout-sec <arg>        Idle timeout for remote hosts. After
-                    given time without any data exchange
-                    the
-                    connection might be closed.
-  -k,--key-store <arg>               Key store in PKCS12 format
-  -kp,--key-store-password <arg>     Key store password
-  -l,--ssl-disable                   Disable SSL encryption
-  -m,--max-payload-size <arg>        Maximum supported payload size in
-                    bytes
-  -p,--listen-port <arg>             Listen port
-  -t,--trust-store <arg>             File with trusted certificate bundle
-                    in PKCS12 format
-  -tp,--trust-store-password <arg>   Trust store password
-  -u,--dummy                         If present will start in dummy mode
-                    (dummy external services)
-  All parameters can be specified as environment variables using
-  upper-snake-case full name with prefix `VESHV_`.
+    Unexpected error when parsing command line arguments
+    usage: java org.onap.dcae.collectors.veshv.main.MainKt
+    Required parameters: s, p, c
+     -c,--config-url <arg>                URL of ves configuration on consul
+     -d,--first-request-delay <arg>       Delay of first request to consul in
+                                          seconds
+     -H,--health-check-api-port <arg>     Health check rest api listen port
+     -I,--request-interval <arg>          Interval of consul configuration
+                                          requests in seconds
+     -i,--idle-timeout-sec <arg>          Idle timeout for remote hosts. After
+                                          given time without any data exchange
+                                          the
+                                          connection might be closed.
+     -k,--key-store <arg>                 Key store in PKCS12 format
+     -kp,--key-store-password <arg>       Key store password
+     -l,--ssl-disable                     Disable SSL encryption
+     -m,--max-payload-size <arg>          Maximum supported payload size in
+                                          bytes
+     -p,--listen-port <arg>               Listen port
+     -s,--kafka-bootstrap-servers <arg>   Comma-separated Kafka bootstrap
+                                          servers in <host>:<port> format
+     -t,--trust-store <arg>               File with trusted certificate bundle
+                                          in PKCS12 format
+     -tp,--trust-store-password <arg>     Trust store password
+     -u,--dummy                           If present will start in dummy mode
+                                          (dummy external services)
+    All parameters can be specified as environment variables using
+    upper-snake-case full name with prefix `VESHV_`.
 
 
 This log message is printed when you do not specify the required parameters (via command line, or in environment variables).
 As described in the above log message, there are a few required parameters:
-**listen port**, **config url** and either **trust store password** and **key store password** if you want to use SSL, or only **ssl disable** if not.
+**listen port**, **config url**, **kafka-bootstrap-servers** and either **trust store password** and **key store password** if you want to use SSL, or only **ssl disable** if not.
 
 To get rid of this error, specify the required parameters. For example:
 
@@ -51,7 +81,7 @@ To get rid of this error, specify the required parameters. For example:
 
 ::
 
-    <hv-ves run command> --listen-port 6061 --config-url http://consul-url/key-path --key-store-password password --trust-store-password password
+    <hv-ves run command> --listen-port 6061 --config-url http://consul-url/key-path --kafka-bootstrap-servers message-router-kafka:9092 --key-store-password password --trust-store-password password
 
 - By defining environment variables:
 
@@ -59,6 +89,7 @@ To get rid of this error, specify the required parameters. For example:
 
     export VESHV_LISTEN_PORT=6061
     export VESHV_CONFIG_URL=http://consul-url/key-path
+    export VESHV_KAFKA_BOOTSTRAP_SERVERS=message-router-kafka:9092
     export VESHV_KEY_STORE_PASSWORD=password
     export VESHV_TRUST_STORE_PASSWORD=password
 
@@ -75,39 +106,86 @@ Configuration errors
 
 ::
 
-    ap.dcae.collectors.veshv.impl.adapters.HttpAdapter | 2018-10-16T13:13:01.155Z | ERROR | Failed to get resource on path: http://localhost:8500/v1/hv/veshv-config (Connection refused: localhost/127.0.0.1:8500) |  | reactor-http-client-epoll-8
-    ap.dcae.collectors.veshv.impl.adapters.HttpAdapter | 2018-10-16T13:13:01.155Z | DEBUG | Nested exception: | java.net.ConnectException: Connection refused
-        ... 10 common frames omitted
-    Wrapped by: io.netty.channel.AbstractChannel$AnnotatedConnectException: Connection refused: localhost/127.0.0.1:8500
-        at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
-        at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
-        at io.netty.channel.socket.nio.NioSocketChannel.doFinishConnect(NioSocketChannel.java:327)
-        at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:340)
-        at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:616)
-        at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:563)
-        at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:480)
-        at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:442)
+     | ap.dcae.collectors.veshv.impl.adapters.HttpAdapter	 | ERROR	 | Failed to get resource on path: http://invalid-host:8500/v1/kv/veshv-config?raw=true (consul-server1: Temporary failure in name resolution)
+     | ap.dcae.collectors.veshv.impl.adapters.HttpAdapter	 | DEBUG	 | Nested exception:	 | 	 | java.net.UnknownHostException: consul-server1: Temporary failure in name resolution
+        at java.base/java.net.Inet4AddressImpl.lookupAllHostAddr(Native Method)
+        at java.base/java.net.InetAddress$PlatformNameService.lookupAllHostAddr(InetAddress.java:929)
+        at java.base/java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1515)
+        at java.base/java.net.InetAddress$NameServiceAddresses.get(InetAddress.java:848)
+        at java.base/java.net.InetAddress.getAllByName0(InetAddress.java:1505)
+        at java.base/java.net.InetAddress.getAllByName(InetAddress.java:1364)
+        at java.base/java.net.InetAddress.getAllByName(InetAddress.java:1298)
+        at java.base/java.net.InetAddress.getByName(InetAddress.java:1248)
+        at io.netty.util.internal.SocketUtils$8.run(SocketUtils.java:146)
+        at io.netty.util.internal.SocketUtils$8.run(SocketUtils.java:143)
+        at java.base/java.security.AccessController.doPrivileged(Native Method)
+        at io.netty.util.internal.SocketUtils.addressByName(SocketUtils.java:143)
+        at io.netty.resolver.DefaultNameResolver.doResolve(DefaultNameResolver.java:43)
+        at io.netty.resolver.SimpleNameResolver.resolve(SimpleNameResolver.java:63)
+        at io.netty.resolver.SimpleNameResolver.resolve(SimpleNameResolver.java:55)
+        at io.netty.resolver.InetSocketAddressResolver.doResolve(InetSocketAddressResolver.java:57)
+        at io.netty.resolver.InetSocketAddressResolver.doResolve(InetSocketAddressResolver.java:32)
+        at io.netty.resolver.AbstractAddressResolver.resolve(AbstractAddressResolver.java:108)
+        at io.netty.bootstrap.Bootstrap.doResolveAndConnect0(Bootstrap.java:208)
+        at io.netty.bootstrap.Bootstrap.access$000(Bootstrap.java:49)
+        at io.netty.bootstrap.Bootstrap$1.operationComplete(Bootstrap.java:188)
+        at io.netty.bootstrap.Bootstrap$1.operationComplete(Bootstrap.java:174)
+        at io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:511)
+        at io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:485)
+        at io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:424)
+        at io.netty.util.concurrent.DefaultPromise.trySuccess(DefaultPromise.java:103)
+        at io.netty.channel.DefaultChannelPromise.trySuccess(DefaultChannelPromise.java:84)
+        at io.netty.channel.AbstractChannel$AbstractUnsafe.safeSetSuccess(AbstractChannel.java:978)
+        at io.netty.channel.AbstractChannel$AbstractUnsafe.register0(AbstractChannel.java:512)
+        at io.netty.channel.AbstractChannel$AbstractUnsafe.access$200(AbstractChannel.java:423)
+        at io.netty.channel.AbstractChannel$AbstractUnsafe$1.run(AbstractChannel.java:482)
+        at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:163)
+        at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:404)
+        at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:315)
         at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884)
-        at java.lang.Thread.run(Thread.java:748)
-     | reactor-http-client-epoll-8
-    rs.veshv.impl.adapters.ConsulConfigurationProvider | 2018-10-16T13:13:01.163Z | WARN  | Could not get fresh configuration | java.net.ConnectException: Connection refused
-        ... 10 common frames omitted
-    Wrapped by: io.netty.channel.AbstractChannel$AnnotatedConnectException: Connection refused: localhost/127.0.0.1:8500
-        at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
-        at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
-        at io.netty.channel.socket.nio.NioSocketChannel.doFinishConnect(NioSocketChannel.java:327)
-        at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:340)
-        at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:616)
-        at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:563)
-        at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:480)
-        at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:442)
+        at java.base/java.lang.Thread.run(Thread.java:834)
+     | rs.veshv.impl.adapters.ConsulConfigurationProvider	 | WARN 	 | Could not load fresh configuration	 | java.net.UnknownHostException: consul-server1: Temporary failure in name resolution
+        at java.base/java.net.Inet4AddressImpl.lookupAllHostAddr(Native Method)
+        at java.base/java.net.InetAddress$PlatformNameService.lookupAllHostAddr(InetAddress.java:929)
+        at java.base/java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1515)
+        at java.base/java.net.InetAddress$NameServiceAddresses.get(InetAddress.java:848)
+        at java.base/java.net.InetAddress.getAllByName0(InetAddress.java:1505)
+        at java.base/java.net.InetAddress.getAllByName(InetAddress.java:1364)
+        at java.base/java.net.InetAddress.getAllByName(InetAddress.java:1298)
+        at java.base/java.net.InetAddress.getByName(InetAddress.java:1248)
+        at io.netty.util.internal.SocketUtils$8.run(SocketUtils.java:146)
+        at io.netty.util.internal.SocketUtils$8.run(SocketUtils.java:143)
+        at java.base/java.security.AccessController.doPrivileged(Native Method)
+        at io.netty.util.internal.SocketUtils.addressByName(SocketUtils.java:143)
+        at io.netty.resolver.DefaultNameResolver.doResolve(DefaultNameResolver.java:43)
+        at io.netty.resolver.SimpleNameResolver.resolve(SimpleNameResolver.java:63)
+        at io.netty.resolver.SimpleNameResolver.resolve(SimpleNameResolver.java:55)
+        at io.netty.resolver.InetSocketAddressResolver.doResolve(InetSocketAddressResolver.java:57)
+        at io.netty.resolver.InetSocketAddressResolver.doResolve(InetSocketAddressResolver.java:32)
+        at io.netty.resolver.AbstractAddressResolver.resolve(AbstractAddressResolver.java:108)
+        at io.netty.bootstrap.Bootstrap.doResolveAndConnect0(Bootstrap.java:208)
+        at io.netty.bootstrap.Bootstrap.access$000(Bootstrap.java:49)
+        at io.netty.bootstrap.Bootstrap$1.operationComplete(Bootstrap.java:188)
+        at io.netty.bootstrap.Bootstrap$1.operationComplete(Bootstrap.java:174)
+        at io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:511)
+        at io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:485)
+        at io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:424)
+        at io.netty.util.concurrent.DefaultPromise.trySuccess(DefaultPromise.java:103)
+        at io.netty.channel.DefaultChannelPromise.trySuccess(DefaultChannelPromise.java:84)
+        at io.netty.channel.AbstractChannel$AbstractUnsafe.safeSetSuccess(AbstractChannel.java:978)
+        at io.netty.channel.AbstractChannel$AbstractUnsafe.register0(AbstractChannel.java:512)
+        at io.netty.channel.AbstractChannel$AbstractUnsafe.access$200(AbstractChannel.java:423)
+        at io.netty.channel.AbstractChannel$AbstractUnsafe$1.run(AbstractChannel.java:482)
+        at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:163)
+        at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:404)
+        at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:315)
         at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884)
-        at java.lang.Thread.run(Thread.java:748)
-     | reactor-http-client-epoll-8
+        at java.base/java.lang.Thread.run(Thread.java:834)
+     | ors.veshv.healthcheck.factory.HealthCheckApiServer	 | DEBUG	 | HV-VES status: OUT_OF_SERVICE, Consul configuration not available. Retrying.
 
 
 
-The above three logs indicate that **HV-VES** cannot connect to the Consul service under url given in **--consul-url** parameter.
+The above three logs indicate that **HV-VES** cannot connect to the Consul service under url given in ``--consul-url`` parameter.
 Make sure Consul is up and running and the **ip + port** combination is correct.
 
 ====
@@ -116,17 +194,73 @@ Make sure Consul is up and running and the **ip + port** combination is correct.
 
 ::
 
-    ap.dcae.collectors.veshv.impl.adapters.HttpAdapter | 2018-10-16T13:52:20.585Z | ERROR | Failed to get resource on path: http://consul:8500/v1/kv/veshv-config (HTTP request failed with code: 404.
-    Failing URI: /v1/kv/veshv-config) |  | reactor-http-nio-1
-    ap.dcae.collectors.veshv.impl.adapters.HttpAdapter | 2018-10-16T13:52:20.586Z | DEBUG | Nested exception: | reactor.ipc.netty.http.client.HttpClientException: HTTP request failed with code: 404.
-    Failing URI: /v1/kv/veshv-config
-     | reactor-http-nio-1
-    rs.veshv.impl.adapters.ConsulConfigurationProvider | 2018-10-16T13:52:20.591Z | WARN  | Could not get fresh configuration | reactor.ipc.netty.http.client.HttpClientException: HTTP request failed with code: 404.
-    Failing URI: /v1/kv/veshv-config
-     | reactor-http-nio-1
+     | ap.dcae.collectors.veshv.impl.adapters.HttpAdapter	 | ERROR	 | Failed to get resource on path: http://consul-server:8500/v1/kv/invalid-resource?raw=true (http://consul-server:8500/v1/kv/invalid-resource?raw=true 404 Not Found)
+     | ap.dcae.collectors.veshv.impl.adapters.HttpAdapter	 | DEBUG	 | Nested exception:	 | java.lang.IllegalStateException: http://consul-server:8500/v1/kv/invalid-resource?raw=true 404 Not Found
+        at org.onap.dcae.collectors.veshv.impl.adapters.HttpAdapter$get$2.apply(HttpAdapter.kt:46)
+        at org.onap.dcae.collectors.veshv.impl.adapters.HttpAdapter$get$2.apply(HttpAdapter.kt:34)
+        at reactor.netty.http.client.HttpClientFinalizer.lambda$responseSingle$7(HttpClientFinalizer.java:95)
+        at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:118)
+        at reactor.core.publisher.FluxRetryPredicate$RetryPredicateSubscriber.onNext(FluxRetryPredicate.java:81)
+        at reactor.core.publisher.MonoCreate$DefaultMonoSink.success(MonoCreate.java:147)
+        at reactor.netty.http.client.HttpClientConnect$HttpObserver.onStateChange(HttpClientConnect.java:383)
+        at reactor.netty.resources.PooledConnectionProvider$DisposableAcquire.onStateChange(PooledConnectionProvider.java:501)
+        at reactor.netty.resources.PooledConnectionProvider$PooledConnection.onStateChange(PooledConnectionProvider.java:443)
+        at reactor.netty.http.client.HttpClientOperations.onInboundNext(HttpClientOperations.java:494)
+        at reactor.netty.channel.ChannelOperationsHandler.channelRead(ChannelOperationsHandler.java:141)
+        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
+        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
+        at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340)
+        at io.netty.channel.CombinedChannelDuplexHandler$DelegatingChannelHandlerContext.fireChannelRead(CombinedChannelDuplexHandler.java:438)
+        at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:310)
+        at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:284)
+        at io.netty.channel.CombinedChannelDuplexHandler.channelRead(CombinedChannelDuplexHandler.java:253)
+        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
+        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
+        at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340)
+        at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1434)
+        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
+        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
+        at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:965)
+        at io.netty.channel.epoll.AbstractEpollStreamChannel$EpollStreamUnsafe.epollInReady(AbstractEpollStreamChannel.java:808)
+        at io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:410)
+        at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:310)
+        at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884)
+        at java.base/java.lang.Thread.run(Thread.java:834)
+     | rs.veshv.impl.adapters.ConsulConfigurationProvider	 | WARN 	 | Could not load fresh configuration	 | java.lang.IllegalStateException: http://consul-server:8500/v1/kv/invalid-resource?raw=true 404 Not Found
+        at org.onap.dcae.collectors.veshv.impl.adapters.HttpAdapter$get$2.apply(HttpAdapter.kt:46)
+        at org.onap.dcae.collectors.veshv.impl.adapters.HttpAdapter$get$2.apply(HttpAdapter.kt:34)
+        at reactor.netty.http.client.HttpClientFinalizer.lambda$responseSingle$7(HttpClientFinalizer.java:95)
+        at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:118)
+        at reactor.core.publisher.FluxRetryPredicate$RetryPredicateSubscriber.onNext(FluxRetryPredicate.java:81)
+        at reactor.core.publisher.MonoCreate$DefaultMonoSink.success(MonoCreate.java:147)
+        at reactor.netty.http.client.HttpClientConnect$HttpObserver.onStateChange(HttpClientConnect.java:383)
+        at reactor.netty.resources.PooledConnectionProvider$DisposableAcquire.onStateChange(PooledConnectionProvider.java:501)
+        at reactor.netty.resources.PooledConnectionProvider$PooledConnection.onStateChange(PooledConnectionProvider.java:443)
+        at reactor.netty.http.client.HttpClientOperations.onInboundNext(HttpClientOperations.java:494)
+        at reactor.netty.channel.ChannelOperationsHandler.channelRead(ChannelOperationsHandler.java:141)
+        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
+        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
+        at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340)
+        at io.netty.channel.CombinedChannelDuplexHandler$DelegatingChannelHandlerContext.fireChannelRead(CombinedChannelDuplexHandler.java:438)
+        at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:310)
+        at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:284)
+        at io.netty.channel.CombinedChannelDuplexHandler.channelRead(CombinedChannelDuplexHandler.java:253)
+        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
+        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
+        at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340)
+        at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1434)
+        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
+        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
+        at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:965)
+        at io.netty.channel.epoll.AbstractEpollStreamChannel$EpollStreamUnsafe.epollInReady(AbstractEpollStreamChannel.java:808)
+        at io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:410)
+        at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:310)
+        at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884)
+        at java.base/java.lang.Thread.run(Thread.java:834)
+     | ors.veshv.healthcheck.factory.HealthCheckApiServer	 | DEBUG	 | HV-VES status: OUT_OF_SERVICE, Consul configuration not available. Retrying.
 
 
-**HV-VES** logs this information when connected to Consul, but cannot find any json configuration under given key which in this case is **veshv-config**.
+**HV-VES** logs this information when connected to Consul, but cannot find any JSON configuration under given key which in this case is **invalid-resource**.
 For more information, see :ref:`run_time_configuration`
 
 ====
@@ -135,36 +269,40 @@ For more information, see :ref:`run_time_configuration`
 
 ::
 
-    rs.veshv.impl.adapters.ConsulConfigurationProvider | 2018-10-16T14:06:14.792Z | INFO  | Obtained new configuration from consul:
-    {
-        "invalidKey": "value"
-    } |  | reactor-http-nio-1
-    rs.veshv.impl.adapters.ConsulConfigurationProvider | 2018-10-16T14:06:14.796Z | WARN  | Could not get fresh configuration | java.lang.NullPointerException: null
-        at org.glassfish.json.JsonObjectBuilderImpl$JsonObjectImpl.getString(JsonObjectBuilderImpl.java:257)
-        at org.onap.dcae.collectors.veshv.impl.adapters.ConsulConfigurationProvider.createCollectorConfiguration(ConsulConfigurationProvider.kt:113)
-        at org.onap.dcae.collectors.veshv.impl.adapters.ConsulConfigurationProvider.access$createCollectorConfiguration(ConsulConfigurationProvider.kt:44)
-        at org.onap.dcae.collectors.veshv.impl.adapters.ConsulConfigurationProvider$invoke$6.invoke(ConsulConfigurationProvider.kt:80)
-        at org.onap.dcae.collectors.veshv.impl.adapters.ConsulConfigurationProvider$invoke$6.invoke(ConsulConfigurationProvider.kt:44)
+     | rs.veshv.impl.adapters.ConsulConfigurationProvider	 | INFO 	 | Obtained new configuration from consul:
+        { "invalidKey": "value" }
+     | 2018-12-20T15:38:14.543Z	 | rs.veshv.impl.adapters.ConsulConfigurationProvider	 | WARN 	 | Could not load fresh configuration	| org.onap.dcae.collectors.veshv.impl.adapters.ParsingException: Failed to parse consul configuration
+        at org.onap.dcae.collectors.veshv.impl.adapters.ConsulConfigurationProvider.createCollectorConfiguration(ConsulConfigurationProvider.kt:125)
+        at org.onap.dcae.collectors.veshv.impl.adapters.ConsulConfigurationProvider.access$createCollectorConfiguration(ConsulConfigurationProvider.kt:48)
+        at org.onap.dcae.collectors.veshv.impl.adapters.ConsulConfigurationProvider$invoke$4.invoke(ConsulConfigurationProvider.kt:80)
+        at org.onap.dcae.collectors.veshv.impl.adapters.ConsulConfigurationProvider$invoke$4.invoke(ConsulConfigurationProvider.kt:48)
         at org.onap.dcae.collectors.veshv.impl.adapters.ConsulConfigurationProvider$sam$java_util_function_Function$0.apply(ConsulConfigurationProvider.kt)
         at reactor.core.publisher.FluxMap$MapSubscriber.onNext(FluxMap.java:100)
-        at reactor.core.publisher.FluxMap$MapSubscriber.onNext(FluxMap.java:108)
-        at reactor.core.publisher.FluxFlatMap$FlatMapMain.tryEmitScalar(FluxFlatMap.java:432)
-        at reactor.core.publisher.FluxFlatMap$FlatMapMain.onNext(FluxFlatMap.java:366)
-        at reactor.core.publisher.FluxMap$MapSubscriber.onNext(FluxMap.java:108)
-        at reactor.core.publisher.FluxMap$MapSubscriber.onNext(FluxMap.java:108)
-        at reactor.core.publisher.FluxFlatMap$FlatMapMain.tryEmit(FluxFlatMap.java:484)
-        at reactor.core.publisher.FluxFlatMap$FlatMapInner.onNext(FluxFlatMap.java:916)
-        at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onNext(FluxMapFuseable.java:115)
-        at reactor.core.publisher.Operators$MonoSubscriber.complete(Operators.java:1083)
+        at reactor.core.publisher.FluxMap$MapSubscriber.onNext(FluxMap.java:114)
+        at reactor.core.publisher.FluxFlatMap$FlatMapMain.tryEmitScalar(FluxFlatMap.java:449)
+        at reactor.core.publisher.FluxFlatMap$FlatMapMain.onNext(FluxFlatMap.java:384)
+        at reactor.core.publisher.FluxConcatMap$ConcatMapImmediate.innerNext(FluxConcatMap.java:275)
+        at reactor.core.publisher.FluxConcatMap$ConcatMapInner.onNext(FluxConcatMap.java:849)
+        at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onNext(FluxMapFuseable.java:121)
+        at reactor.core.publisher.FluxPeekFuseable$PeekFuseableSubscriber.onNext(FluxPeekFuseable.java:204)
+        at reactor.core.publisher.Operators$MonoSubscriber.complete(Operators.java:1476)
         at reactor.core.publisher.MonoFlatMap$FlatMapInner.onNext(MonoFlatMap.java:241)
-        at reactor.core.publisher.MonoNext$NextSubscriber.onNext(MonoNext.java:76)
-        at reactor.core.publisher.FluxMap$MapSubscriber.onNext(FluxMap.java:108)
-        at reactor.core.publisher.FluxFilter$FilterSubscriber.onNext(FluxFilter.java:97)
-        at reactor.ipc.netty.channel.FluxReceive.drainReceiver(FluxReceive.java:213)
-        at reactor.ipc.netty.channel.FluxReceive.onInboundNext(FluxReceive.java:329)
-        at reactor.ipc.netty.channel.ChannelOperations.onInboundNext(ChannelOperations.java:311)
-        at reactor.ipc.netty.http.client.HttpClientOperations.onInboundNext(HttpClientOperations.java:605)
-        at reactor.ipc.netty.channel.ChannelOperationsHandler.channelRead(ChannelOperationsHandler.java:138)
+        at reactor.core.publisher.FluxDoFinally$DoFinallySubscriber.onNext(FluxDoFinally.java:123)
+        at reactor.core.publisher.FluxHandle$HandleSubscriber.onNext(FluxHandle.java:113)
+        at reactor.core.publisher.FluxMapFuseable$MapFuseableConditionalSubscriber.onNext(FluxMapFuseable.java:287)
+        at reactor.core.publisher.FluxUsing$UsingFuseableSubscriber.onNext(FluxUsing.java:350)
+        at reactor.core.publisher.FluxFilterFuseable$FilterFuseableSubscriber.onNext(FluxFilterFuseable.java:113)
+        at reactor.core.publisher.FluxPeekFuseable$PeekFuseableConditionalSubscriber.onNext(FluxPeekFuseable.java:486)
+        at reactor.core.publisher.Operators$MonoSubscriber.complete(Operators.java:1476)
+        at reactor.core.publisher.MonoReduceSeed$ReduceSeedSubscriber.onComplete(MonoReduceSeed.java:156)
+        at reactor.core.publisher.FluxMap$MapSubscriber.onComplete(FluxMap.java:136)
+        at reactor.netty.channel.FluxReceive.terminateReceiver(FluxReceive.java:378)
+        at reactor.netty.channel.FluxReceive.drainReceiver(FluxReceive.java:202)
+        at reactor.netty.channel.FluxReceive.onInboundComplete(FluxReceive.java:343)
+        at reactor.netty.channel.ChannelOperations.onInboundComplete(ChannelOperations.java:325)
+        at reactor.netty.channel.ChannelOperations.terminate(ChannelOperations.java:372)
+        at reactor.netty.http.client.HttpClientOperations.onInboundNext(HttpClientOperations.java:522)
+        at reactor.netty.channel.ChannelOperationsHandler.channelRead(ChannelOperationsHandler.java:141)
         at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
         at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
         at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340)
@@ -179,14 +317,12 @@ For more information, see :ref:`run_time_configuration`
         at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
         at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
         at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:965)
-        at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:163)
-        at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:628)
-        at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:563)
-        at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:480)
-        at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:442)
+        at io.netty.channel.epoll.AbstractEpollStreamChannel$EpollStreamUnsafe.epollInReady(AbstractEpollStreamChannel.java:808)
+        at io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:410)
+        at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:310)
         at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884)
-        at java.lang.Thread.run(Thread.java:748)
-     | reactor-http-nio-1
+        at java.base/java.lang.Thread.run(Thread.java:834)
+     | ors.veshv.healthcheck.factory.HealthCheckApiServer	 | DEBUG	 | HV-VES status: OUT_OF_SERVICE, Consul configuration not available. Retrying.
 
 
 This log is printed when you upload a configuration in an invalid format (for example, with missing fields). In the first log you can see that configuration on Consul is:
@@ -204,106 +340,169 @@ For more information on **Consul configuration**, see :ref:`run_time_configurati
 Message handling errors
 -----------------------
 
-**Handling messages when invalid kafka url is specified**
+**Handling messages when invalid Kafka url is specified**
 
 ::
 
-     | reactor-tcp-server-epoll-6
-                  org.apache.kafka.clients.ClientUtils | 2018-10-19T08:29:36.917Z | WARN  | Removing server invalid-kafka:9093 from bootstrap.servers as DNS resolution failed for invalid-kafka |  | reactor-tcp-server-epoll-6
-       org.apache.kafka.clients.producer.KafkaProducer | 2018-10-19T08:29:36.918Z | INFO  | [Producer clientId=producer-1] Closing the Kafka producer with timeoutMillis = 0 ms. |  | reactor-tcp-server-epoll-6
-    org.onap.dcae.collectors.veshv.impl.VesHvCollector | 2018-10-19T08:29:36.962Z | WARN  | Error while handling message stream: org.apache.kafka.common.KafkaException (Failed to construct kafka producer) |  | reactor-tcp-server-epoll-6
-    org.onap.dcae.collectors.veshv.impl.VesHvCollector | 2018-10-19T08:29:36.966Z | DEBUG | Detailed stack trace | org.apache.kafka.common.config.ConfigException: No resolvable bootstrap urls given in bootstrap.servers
-        at org.apache.kafka.clients.ClientUtils.parseAndValidateAddresses(ClientUtils.java:64)
-        at org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:396)
-        ... 24 common frames omitted
-    Wrapped by: org.apache.kafka.common.KafkaException: Failed to construct kafka producer
-        at org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:441)
-        at org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:285)
+     | p.dcae.collectors.veshv.impl.socket.NettyTcpServer	 | DEBUG	 | Client connection request received
+     | p.dcae.collectors.veshv.impl.socket.NettyTcpServer	 | INFO 	 | Handling new connection
+     |               org.apache.kafka.clients.ClientUtils	 | WARN 	 | Removing server invalid-kafka-host:9092 from bootstrap.servers as DNS resolution failed for invalid-kafka-host
+     | org.onap.dcae.collectors.veshv.impl.VesHvCollector	 | WARN 	 | Error while handling message stream: org.apache.kafka.common.KafkaException (Failed to construct kafka producer)
+     | org.onap.dcae.collectors.veshv.impl.VesHvCollector	 | DEBUG	 | Detailed stack trace	| org.apache.kafka.common.config.ConfigException: No resolvable bootstrap urls given in bootstrap.servers
+        at org.apache.kafka.clients.ClientUtils.parseAndValidateAddresses(ClientUtils.java:66)
+        at org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:406)
+        ... 49 common frames omitted
+        Wrapped by: org.apache.kafka.common.KafkaException: Failed to construct kafka producer
+        at org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:457)
+        at org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:289)
         at reactor.kafka.sender.internals.ProducerFactory.createProducer(ProducerFactory.java:33)
-        at reactor.kafka.sender.internals.DefaultKafkaSender.lambda$new$0(DefaultKafkaSender.java:90)
-        at reactor.core.publisher.MonoCallable.subscribe(MonoCallable.java:57)
+        at reactor.kafka.sender.internals.DefaultKafkaSender.lambda$new$0(DefaultKafkaSender.java:96)
+        at reactor.core.publisher.MonoCallable.subscribe(MonoCallable.java:56)
         at reactor.core.publisher.MonoPeekFuseable.subscribe(MonoPeekFuseable.java:74)
-        at reactor.core.publisher.Mono.subscribe(Mono.java:3088)
+        at reactor.core.publisher.Mono.subscribe(Mono.java:3590)
         at reactor.core.publisher.MonoProcessor.add(MonoProcessor.java:531)
         at reactor.core.publisher.MonoProcessor.subscribe(MonoProcessor.java:444)
         at reactor.core.publisher.MonoFlatMapMany.subscribe(MonoFlatMapMany.java:49)
-        at reactor.core.publisher.FluxPeek.subscribe(FluxPeek.java:80)
-        at reactor.core.publisher.FluxFilter.subscribe(FluxFilter.java:52)
+        at reactor.core.publisher.FluxPeek.subscribe(FluxPeek.java:83)
         at reactor.core.publisher.FluxMap.subscribe(FluxMap.java:62)
-        at reactor.core.publisher.FluxDefer.subscribe(FluxDefer.java:55)
         at reactor.core.publisher.FluxPeek.subscribe(FluxPeek.java:83)
-        at reactor.core.publisher.FluxDoFinally.subscribe(FluxDoFinally.java:73)
+        at reactor.core.publisher.FluxDefer.subscribe(FluxDefer.java:54)
+        at reactor.core.publisher.FluxPeek.subscribe(FluxPeek.java:83)
         at reactor.core.publisher.FluxOnErrorResume.subscribe(FluxOnErrorResume.java:47)
+        at reactor.core.publisher.FluxDoFinally.subscribe(FluxDoFinally.java:73)
         at reactor.core.publisher.MonoIgnoreElements.subscribe(MonoIgnoreElements.java:37)
-        at reactor.ipc.netty.channel.ChannelOperations.applyHandler(ChannelOperations.java:381)
-        at reactor.ipc.netty.channel.ChannelOperations.onHandlerStart(ChannelOperations.java:296)
-        at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:163)
-        at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:404)
-        at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:315)
+        at reactor.netty.tcp.TcpServerHandle.onStateChange(TcpServerHandle.java:64)
+        at reactor.netty.tcp.TcpServerBind$ChildObserver.onStateChange(TcpServerBind.java:226)
+        at reactor.netty.channel.ChannelOperationsHandler.channelActive(ChannelOperationsHandler.java:112)
+        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelActive(AbstractChannelHandlerContext.java:213)
+        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelActive(AbstractChannelHandlerContext.java:199)
+        at io.netty.channel.AbstractChannelHandlerContext.fireChannelActive(AbstractChannelHandlerContext.java:192)
+        at reactor.netty.tcp.SslProvider$SslReadHandler.userEventTriggered(SslProvider.java:720)
+        at io.netty.channel.AbstractChannelHandlerContext.invokeUserEventTriggered(AbstractChannelHandlerContext.java:329)
+        at io.netty.channel.AbstractChannelHandlerContext.invokeUserEventTriggered(AbstractChannelHandlerContext.java:315)
+        at io.netty.channel.AbstractChannelHandlerContext.fireUserEventTriggered(AbstractChannelHandlerContext.java:307)
+        at io.netty.handler.ssl.SslHandler.setHandshakeSuccess(SslHandler.java:1530)
+        at io.netty.handler.ssl.SslHandler.wrapNonAppData(SslHandler.java:937)
+        at io.netty.handler.ssl.SslHandler.unwrap(SslHandler.java:1360)
+        at io.netty.handler.ssl.SslHandler.decodeJdkCompatible(SslHandler.java:1199)
+        at io.netty.handler.ssl.SslHandler.decode(SslHandler.java:1243)
+        at io.netty.handler.codec.ByteToMessageDecoder.decodeRemovalReentryProtection(ByteToMessageDecoder.java:489)
+        at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:428)
+        at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:265)
+        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
+        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
+        at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340)
+        at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1434)
+        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
+        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
+        at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:965)
+        at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:163)
+        at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:628)
+        at io.netty.channel.nio.NioEventLoop.processSelectedKeysPlain(NioEventLoop.java:528)
+        at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:482)
+        at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:442)
         at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884)
-        at java.lang.Thread.run(Thread.java:748)
-     | reactor-tcp-server-epoll-6
-    p.dcae.collectors.veshv.impl.socket.NettyTcpServer | 2018-10-19T08:29:36.971Z | INFO  | Connection from /172.26.0.6:55574 has been closed |  | reactor-tcp-server-epoll-6
-
-
-**HV-VES** responds with the above when it handles a message and currently applied configuration has invalid Kafka bootstrap server defined.
-The configuration read from Consul in this case:
+        at java.base/java.lang.Thread.run(Thread.java:834)
+     | org.onap.dcae.collectors.veshv.impl.VesHvCollector	 | DEBUG	 | Released buffer memory after handling message stream
 
-.. code-block:: json
-
-    {
-        "dmaap.kafkaBootstrapServers": "invalid-kafka:9093",
-        "collector.routing": [
-                {
-                    "fromDomain": "perf3gpp",
-                    "toTopic": "HV_VES_PERF3GPP"
-                },
-                {
-                    "fromDomain": "heartbeat",
-                    "toTopic": "HV_VES_HEARTBEAT"
-                }
-        ]
-    }
-
-where **invalid-kafka:9093** is not an existing **ip+port** combination.
 
+**HV-VES** responds with the above when it handles a message and specified DmaaP MR Kafka bootstrap server is invalid.
+Restart with different ``--kafka-bootstrap-servers`` command line option value is required.
+For more information, see: :ref:`deployment`
 
 ====
 
-**First creation of topics on kafka**
+**Kafka service became unavailable after producer has been created**
 
+**HV-VES** lazily creates Kafka consumer after first successfully handled event.
+If Kafka service becomes unreachable after consumer initialization, it is removed from bootstrap.servers list on next connection.
 
-On the first try of creating and publishing to a given kafka topic, **HV-VES** logs the following warnings and creates the requested topics anyway.
+Following information is logged:
 
 ::
 
-    org.apache.kafka.clients.NetworkClient | 2018-10-22T10:11:53.396Z | WARN  | [Producer clientId=producer-1] Error while fetching metadata with correlation id 1 : {HV_VES_PERF3GPP=LEADER_NOT_AVAILABLE} |  | kafka-producer-network-thread | producer-1
-    org.apache.kafka.clients.NetworkClient | 2018-10-22T10:11:53.524Z | WARN  | [Producer clientId=producer-1] Error while fetching metadata with correlation id 3 : {HV_VES_PERF3GPP=LEADER_NOT_AVAILABLE} |  | kafka-producer-network-thread | producer-1
-    org.apache.kafka.clients.NetworkClient | 2018-10-22T10:11:53.636Z | WARN  | [Producer clientId=producer-1] Error while fetching metadata with correlation id 4 : {HV_VES_PERF3GPP=LEADER_NOT_AVAILABLE} |  | kafka-producer-network-thread | producer-1
-    org.apache.kafka.clients.NetworkClient | 2018-10-22T10:11:53.749Z | WARN  | [Producer clientId=producer-1] Error while fetching metadata with correlation id 5 : {HV_VES_PERF3GPP=LEADER_NOT_AVAILABLE} |  | kafka-producer-network-thread | producer-1
-
-====
-
-**Kafka service became unavailable after producer for a given topic was successfully created**
-
-
-After receiving a **Ves Common Event**, **HV-VES** creates a producer for a given topic and keeps it for the whole lifetime of an application.
-If Kafka service becomes unreachable after the producer creation, you will see the following logs when trying to establish another connection with the Kafka server.
-
-::
+     | org.apache.kafka.clients.NetworkClient   | WARN 	 | [Producer clientId=producer-1] Connection to node 1001 could not be established. Broker may not be available.
+     | org.apache.kafka.clients.NetworkClient   | WARN 	 | [Producer clientId=producer-1] Connection to node 1001 could not be established. Broker may not be available.
+     | org.apache.kafka.clients.NetworkClient   | WARN 	 | [Producer clientId=producer-1] Connection to node 1001 could not be established. Broker may not be available.
+     | org.apache.kafka.clients.NetworkClient   | WARN 	 | [Producer clientId=producer-1] Connection to node 1001 could not be established. Broker may not be available.
+     | org.apache.kafka.clients.NetworkClient   | WARN 	 | [Producer clientId=producer-1] Error connecting to node message-router-kafka:9092 (id: 1001 rack: null)	 | 	 | java.nio.channels.UnresolvedAddressException: null
+        at java.base/sun.nio.ch.Net.checkAddress(Net.java:130)
+        at java.base/sun.nio.ch.SocketChannelImpl.connect(SocketChannelImpl.java:675)
+        at org.apache.kafka.common.network.Selector.doConnect(Selector.java:233)
+        ... 9 common frames omitted
+        Wrapped by: java.io.IOException: Can't resolve address: message-router-kafka:9092
+        at org.apache.kafka.common.network.Selector.doConnect(Selector.java:235)
+        at org.apache.kafka.common.network.Selector.connect(Selector.java:214)
+        at org.apache.kafka.clients.NetworkClient.initiateConnect(NetworkClient.java:864)
+        at org.apache.kafka.clients.NetworkClient.access$700(NetworkClient.java:64)
+        at org.apache.kafka.clients.NetworkClient$DefaultMetadataUpdater.maybeUpdate(NetworkClient.java:1035)
+        at org.apache.kafka.clients.NetworkClient$DefaultMetadataUpdater.maybeUpdate(NetworkClient.java:920)
+        at org.apache.kafka.clients.NetworkClient.poll(NetworkClient.java:508)
+        at org.apache.kafka.clients.producer.internals.Sender.run(Sender.java:239)
+        at org.apache.kafka.clients.producer.internals.Sender.run(Sender.java:163)
+        at java.base/java.lang.Thread.run(Thread.java:834)
+         | 	 | kafka-producer-network-thread | producer-1
+    | p.dcae.collectors.veshv.impl.socket.NettyTcpServer	 | INFO 	 | Handling new connection
+    |               org.apache.kafka.clients.ClientUtils	 | WARN 	 | Removing server message-router-kafka:9092 from bootstrap.servers as DNS resolution failed for message-router-kafka
+    | org.onap.dcae.collectors.veshv.impl.VesHvCollector	 | WARN 	 | Error while handling message stream: org.apache.kafka.common.KafkaException (Failed to construct kafka producer)
+    | org.onap.dcae.collectors.veshv.impl.VesHvCollector	 | DEBUG	 | Detailed stack trace
+        at org.apache.kafka.clients.ClientUtils.parseAndValidateAddresses(ClientUtils.java:66)
+        at org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:406)
+        ... 48 common frames omitted
+        Wrapped by: org.apache.kafka.common.KafkaException: Failed to construct kafka producer
+        at org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:457)
+        at org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:289)
+        at reactor.kafka.sender.internals.ProducerFactory.createProducer(ProducerFactory.java:33)
+        at reactor.kafka.sender.internals.DefaultKafkaSender.lambda$new$0(DefaultKafkaSender.java:96)
+        at reactor.core.publisher.MonoCallable.subscribe(MonoCallable.java:56)
+        at reactor.core.publisher.MonoPeekFuseable.subscribe(MonoPeekFuseable.java:74)
+        at reactor.core.publisher.Mono.subscribe(Mono.java:3590)
+        at reactor.core.publisher.MonoProcessor.add(MonoProcessor.java:531)
+        at reactor.core.publisher.MonoProcessor.subscribe(MonoProcessor.java:444)
+        at reactor.core.publisher.MonoFlatMapMany.subscribe(MonoFlatMapMany.java:49)
+        at reactor.core.publisher.FluxPeek.subscribe(FluxPeek.java:83)
+        at reactor.core.publisher.FluxMap.subscribe(FluxMap.java:62)
+        at reactor.core.publisher.FluxPeek.subscribe(FluxPeek.java:83)
+        at reactor.core.publisher.FluxDefer.subscribe(FluxDefer.java:54)
+        at reactor.core.publisher.FluxPeek.subscribe(FluxPeek.java:83)
+        at reactor.core.publisher.FluxOnErrorResume.subscribe(FluxOnErrorResume.java:47)
+        at reactor.core.publisher.FluxDoFinally.subscribe(FluxDoFinally.java:73)
+        at reactor.core.publisher.MonoIgnoreElements.subscribe(MonoIgnoreElements.java:37)
+        at reactor.netty.tcp.TcpServerHandle.onStateChange(TcpServerHandle.java:64)
+        at reactor.netty.tcp.TcpServerBind$ChildObserver.onStateChange(TcpServerBind.java:226)
+        at reactor.netty.channel.ChannelOperationsHandler.channelActive(ChannelOperationsHandler.java:112)
+        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelActive(AbstractChannelHandlerContext.java:213)
+        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelActive(AbstractChannelHandlerContext.java:199)
+        at io.netty.channel.AbstractChannelHandlerContext.fireChannelActive(AbstractChannelHandlerContext.java:192)
+        at reactor.netty.tcp.SslProvider$SslReadHandler.userEventTriggered(SslProvider.java:720)
+        at io.netty.channel.AbstractChannelHandlerContext.invokeUserEventTriggered(AbstractChannelHandlerContext.java:329)
+        at io.netty.channel.AbstractChannelHandlerContext.invokeUserEventTriggered(AbstractChannelHandlerContext.java:315)
+        at io.netty.channel.AbstractChannelHandlerContext.fireUserEventTriggered(AbstractChannelHandlerContext.java:307)
+        at io.netty.handler.ssl.SslHandler.setHandshakeSuccess(SslHandler.java:1530)
+        at io.netty.handler.ssl.SslHandler.unwrap(SslHandler.java:1368)
+        at io.netty.handler.ssl.SslHandler.decodeJdkCompatible(SslHandler.java:1199)
+        at io.netty.handler.ssl.SslHandler.decode(SslHandler.java:1243)
+        at io.netty.handler.codec.ByteToMessageDecoder.decodeRemovalReentryProtection(ByteToMessageDecoder.java:489)
+        at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:428)
+        at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:265)
+        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
+        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
+        at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340)
+        at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1434)
+        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
+        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
+        at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:965)
+        at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:163)
+        at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:628)
+        at io.netty.channel.nio.NioEventLoop.processSelectedKeysPlain(NioEventLoop.java:528)
+        at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:482)
+        at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:442)
+        at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884)
+        at java.base/java.lang.Thread.run(Thread.java:834)
+     | org.onap.dcae.collectors.veshv.impl.VesHvCollector	 | DEBUG	 | Released buffer memory after handling message stream
 
-     org.apache.kafka.clients.NetworkClient | 2018-10-22T10:04:08.604Z | WARN  | [Producer clientId=producer-1] Connection to node 1001 could not be established. Broker may not be available. |  | kafka-producer-network-thread | producer-1
-                org.apache.kafka.clients.NetworkClient | 2018-10-22T10:04:11.896Z | WARN  | [Producer clientId=producer-1] Connection to node 1001 could not be established. Broker may not be available. |  | kafka-producer-network-thread | producer-1
-                org.apache.kafka.clients.NetworkClient | 2018-10-22T10:04:14.968Z | WARN  | [Producer clientId=producer-1] Connection to node 1001 could not be established. Broker may not be available. |  | kafka-producer-network-thread | producer-1
-                org.apache.kafka.clients.NetworkClient | 2018-10-22T10:04:18.040Z | WARN  | [Producer clientId=producer-1] Connection to node 1001 could not be established. Broker may not be available. |  | kafka-producer-network-thread | producer-1
-                org.apache.kafka.clients.NetworkClient | 2018-10-22T10:04:21.111Z | WARN  | [Producer clientId=producer-1] Connection to node 1001 could not be established. Broker may not be available. |  | kafka-producer-network-thread | producer-1
-     reactor.kafka.sender.internals.DefaultKafkaSender | 2018-10-22T10:04:23.519Z | ERROR | error {} | org.apache.kafka.common.errors.TimeoutException: Expiring 1 record(s) for HV_VES_PERF3GPP-0: 30050 ms has passed since batch creation plus linger time
-     | kafka-producer-network-thread | producer-1
-    cae.collectors.veshv.impl.adapters.kafka.KafkaSink | 2018-10-22T10:04:23.522Z | WARN  | Failed to send message to Kafka | org.apache.kafka.common.errors.TimeoutException: Expiring 1 record(s) for HV_VES_PERF3GPP-0: 30050 ms has passed since batch creation plus linger time
-     | single-1
-    org.onap.dcae.collectors.veshv.impl.VesHvCollector | 2018-10-22T10:04:23.528Z | WARN  | Error while handling message stream: org.apache.kafka.common.errors.TimeoutException (Expiring 1 record(s) for HV_VES_PERF3GPP-0: 30050 ms has passed since batch creation plus linger time) |  | single-1
 
-To resolve this issue, **HV-VES** restart is required.
+To resolve this issue, you can either wait for that Kafka service to be available, or just like in previous paragraph, restart **HV-VES** with different value of ``--kafka-bootstrap-servers`` option.
 
 ====
 
@@ -311,37 +510,96 @@ To resolve this issue, **HV-VES** restart is required.
 
 ::
 
-    g.onap.dcae.collectors.veshv.impl.VesHvCollector | 2018-10-19T08:53:18.349Z | WARN  | Error while handling message stream: org.onap.dcae.collectors.veshv.impl.wire.WireFrameException (PayloadSizeExceeded: payload size exceeds the limit (1048576 bytes)) |  | single-1
-    org.onap.dcae.collectors.veshv.impl.VesHvCollector | 2018-10-19T08:53:18.349Z | DEBUG | Detailed stack trace | org.onap.dcae.collectors.veshv.impl.wire.WireFrameException: PayloadSizeExceeded: payload size exceeds the limit (1048576 bytes)
-        at org.onap.dcae.collectors.veshv.impl.wire.WireChunkDecoder$onError$1$1.invoke(WireChunkDecoder.kt:67)
-        at org.onap.dcae.collectors.veshv.impl.wire.WireChunkDecoder$onError$1$1.invoke(WireChunkDecoder.kt:38)
-        at arrow.effects.IO$Companion$invoke$1.invoke(IO.kt:28)
-        at arrow.effects.IO$Companion$invoke$1.invoke(IO.kt:22)
-        at arrow.effects.IORunLoop.step(IORunLoop.kt:50)
-        at arrow.effects.IO.unsafeRunTimed(IO.kt:109)
-        at arrow.effects.IO.unsafeRunSync(IO.kt:106)
-        at org.onap.dcae.collectors.veshv.impl.wire.WireChunkDecoder$generateFrames$1.accept(WireChunkDecoder.kt:61)
-        at org.onap.dcae.collectors.veshv.impl.wire.WireChunkDecoder$generateFrames$1.accept(WireChunkDecoder.kt:38)
+     | p.dcae.collectors.veshv.impl.socket.NettyTcpServer	 | DEBUG	 | Client connection request received
+     | p.dcae.collectors.veshv.impl.socket.NettyTcpServer	 | INFO 	 | Handling new connection
+     | p.dcae.collectors.veshv.impl.wire.WireChunkDecoder	 | TRACE	 | Got message with total size of 16384 B
+     | p.dcae.collectors.veshv.impl.wire.WireChunkDecoder	 | WARN 	 | Error while handling message stream: org.onap.dcae.collectors.veshv.impl.wire.WireFrameException (PayloadSizeExceeded: payload size exceeds the limit (1048576 bytes))
+     | p.dcae.collectors.veshv.impl.wire.WireChunkDecoder	 | DEBUG	 | Detailed stack trace	| org.onap.dcae.collectors.veshv.impl.wire.WireFrameException: PayloadSizeExceeded: payload size exceeds the limit (1048576 bytes)
+        at org.onap.dcae.collectors.veshv.impl.wire.WireChunkDecoder$onError$1$1.invoke(WireChunkDecoder.kt:72)
+        at org.onap.dcae.collectors.veshv.impl.wire.WireChunkDecoder$onError$1$1.invoke(WireChunkDecoder.kt:41)
+        at arrow.effects.IO$Companion$invoke$1.invoke(IO.kt:33)
+        at arrow.effects.IO$Companion$invoke$1.invoke(IO.kt:27)
+        at arrow.effects.IORunLoop.step(IORunLoop.kt:49)
+        at arrow.effects.IO.unsafeRunTimed(IO.kt:115)
+        at arrow.effects.IO.unsafeRunSync(IO.kt:112)
+        at org.onap.dcae.collectors.veshv.impl.wire.WireChunkDecoder$generateFrames$1.accept(WireChunkDecoder.kt:66)
+        at org.onap.dcae.collectors.veshv.impl.wire.WireChunkDecoder$generateFrames$1.accept(WireChunkDecoder.kt:41)
+        at reactor.core.publisher.FluxGenerate.lambda$new$1(FluxGenerate.java:56)
+        at reactor.core.publisher.FluxGenerate$GenerateSubscription.slowPath(FluxGenerate.java:262)
+        at reactor.core.publisher.FluxGenerate$GenerateSubscription.request(FluxGenerate.java:204)
+        at reactor.core.publisher.Operators$MultiSubscriptionSubscriber.set(Operators.java:1849)
+        at reactor.core.publisher.FluxOnErrorResume$ResumeSubscriber.onSubscribe(FluxOnErrorResume.java:68)
+        at reactor.core.publisher.FluxGenerate.subscribe(FluxGenerate.java:83)
+        at reactor.core.publisher.FluxOnErrorResume.subscribe(FluxOnErrorResume.java:47)
+        at reactor.core.publisher.FluxDoFinally.subscribe(FluxDoFinally.java:73)
+        at reactor.core.publisher.FluxDefer.subscribe(FluxDefer.java:54)
+        at reactor.core.publisher.Flux.subscribe(Flux.java:7734)
+        at reactor.core.publisher.FluxConcatMap$ConcatMapImmediate.drain(FluxConcatMap.java:442)
+        at reactor.core.publisher.FluxConcatMap$ConcatMapImmediate.onNext(FluxConcatMap.java:244)
+        at reactor.core.publisher.FluxPeek$PeekSubscriber.onNext(FluxPeek.java:192)
+        at reactor.core.publisher.FluxPeek$PeekSubscriber.onNext(FluxPeek.java:192)
+        at reactor.core.publisher.FluxMap$MapSubscriber.onNext(FluxMap.java:114)
+        at reactor.netty.channel.FluxReceive.drainReceiver(FluxReceive.java:211)
+        at reactor.netty.channel.FluxReceive.onInboundNext(FluxReceive.java:327)
+        at reactor.netty.channel.ChannelOperations.onInboundNext(ChannelOperations.java:310)
+        at reactor.netty.channel.ChannelOperationsHandler.channelRead(ChannelOperationsHandler.java:141)
+        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
+        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
+        at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340)
+        at io.netty.handler.timeout.IdleStateHandler.channelRead(IdleStateHandler.java:286)
+        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
+        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
+        at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340)
+        at io.netty.handler.ssl.SslHandler.unwrap(SslHandler.java:1429)
+        at io.netty.handler.ssl.SslHandler.decodeJdkCompatible(SslHandler.java:1199)
+        at io.netty.handler.ssl.SslHandler.decode(SslHandler.java:1243)
+        at io.netty.handler.codec.ByteToMessageDecoder.decodeRemovalReentryProtection(ByteToMessageDecoder.java:489)
+        at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:428)
+        at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:265)
+        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
+        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
+        at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340)
+        at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1434)
+        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
+        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
+        at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:965)
+        at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:163)
+        at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:628)
+        at io.netty.channel.nio.NioEventLoop.processSelectedKeysPlain(NioEventLoop.java:528)
+        at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:482)
+        at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:442)
+        at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884)
+        at java.base/java.lang.Thread.run(Thread.java:834)
+     | org.onap.dcae.collectors.veshv.impl.VesHvCollector	 | WARN 	 | Error while handling message stream: org.onap.dcae.collectors.veshv.impl.wire.WireFrameException (PayloadSizeExceeded: payload size exceeds the limit (1048576 bytes))
+     | org.onap.dcae.collectors.veshv.impl.VesHvCollector	 | DEBUG	 | Detailed stack trace	| org.onap.dcae.collectors.veshv.impl.wire.WireFrameException: PayloadSizeExceeded: payload size exceeds the limit (1048576 bytes)
+        at org.onap.dcae.collectors.veshv.impl.wire.WireChunkDecoder$onError$1$1.invoke(WireChunkDecoder.kt:72)
+        at org.onap.dcae.collectors.veshv.impl.wire.WireChunkDecoder$onError$1$1.invoke(WireChunkDecoder.kt:41)
+        at arrow.effects.IO$Companion$invoke$1.invoke(IO.kt:33)
+        at arrow.effects.IO$Companion$invoke$1.invoke(IO.kt:27)
+        at arrow.effects.IORunLoop.step(IORunLoop.kt:49)
+        at arrow.effects.IO.unsafeRunTimed(IO.kt:115)
+        at arrow.effects.IO.unsafeRunSync(IO.kt:112)
+        at org.onap.dcae.collectors.veshv.impl.wire.WireChunkDecoder$generateFrames$1.accept(WireChunkDecoder.kt:66)
+        at org.onap.dcae.collectors.veshv.impl.wire.WireChunkDecoder$generateFrames$1.accept(WireChunkDecoder.kt:41)
         at reactor.core.publisher.FluxGenerate.lambda$new$1(FluxGenerate.java:56)
         at reactor.core.publisher.FluxGenerate$GenerateSubscription.slowPath(FluxGenerate.java:262)
         at reactor.core.publisher.FluxGenerate$GenerateSubscription.request(FluxGenerate.java:204)
-        at reactor.core.publisher.FluxPeekFuseable$PeekFuseableSubscriber.request(FluxPeekFuseable.java:138)
-        at reactor.core.publisher.Operators$MultiSubscriptionSubscriber.set(Operators.java:1454)
-        at reactor.core.publisher.Operators$MultiSubscriptionSubscriber.onSubscribe(Operators.java:1328)
-        at reactor.core.publisher.FluxPeekFuseable$PeekFuseableSubscriber.onSubscribe(FluxPeekFuseable.java:172)
+        at reactor.core.publisher.Operators$MultiSubscriptionSubscriber.set(Operators.java:1849)
+        at reactor.core.publisher.FluxOnErrorResume$ResumeSubscriber.onSubscribe(FluxOnErrorResume.java:68)
         at reactor.core.publisher.FluxGenerate.subscribe(FluxGenerate.java:83)
-        at reactor.core.publisher.FluxPeekFuseable.subscribe(FluxPeekFuseable.java:86)
-        at reactor.core.publisher.FluxDefer.subscribe(FluxDefer.java:55)
-        at reactor.core.publisher.Flux.subscribe(Flux.java:6877)
-        at reactor.core.publisher.FluxConcatMap$ConcatMapImmediate.drain(FluxConcatMap.java:418)
-        at reactor.core.publisher.FluxConcatMap$ConcatMapImmediate.onNext(FluxConcatMap.java:241)
-        at reactor.core.publisher.FluxPeek$PeekSubscriber.onNext(FluxPeek.java:185)
-        at reactor.core.publisher.FluxPeek$PeekSubscriber.onNext(FluxPeek.java:185)
-        at reactor.core.publisher.FluxMap$MapSubscriber.onNext(FluxMap.java:108)
-        at reactor.ipc.netty.channel.FluxReceive.drainReceiver(FluxReceive.java:213)
-        at reactor.ipc.netty.channel.FluxReceive.onInboundNext(FluxReceive.java:329)
-        at reactor.ipc.netty.channel.ChannelOperations.onInboundNext(ChannelOperations.java:311)
-        at reactor.ipc.netty.channel.ChannelOperationsHandler.channelRead(ChannelOperationsHandler.java:138)
+        at reactor.core.publisher.FluxOnErrorResume.subscribe(FluxOnErrorResume.java:47)
+        at reactor.core.publisher.FluxDoFinally.subscribe(FluxDoFinally.java:73)
+        at reactor.core.publisher.FluxDefer.subscribe(FluxDefer.java:54)
+        at reactor.core.publisher.Flux.subscribe(Flux.java:7734)
+        at reactor.core.publisher.FluxConcatMap$ConcatMapImmediate.drain(FluxConcatMap.java:442)
+        at reactor.core.publisher.FluxConcatMap$ConcatMapImmediate.onNext(FluxConcatMap.java:244)
+        at reactor.core.publisher.FluxPeek$PeekSubscriber.onNext(FluxPeek.java:192)
+        at reactor.core.publisher.FluxPeek$PeekSubscriber.onNext(FluxPeek.java:192)
+        at reactor.core.publisher.FluxMap$MapSubscriber.onNext(FluxMap.java:114)
+        at reactor.netty.channel.FluxReceive.drainReceiver(FluxReceive.java:211)
+        at reactor.netty.channel.FluxReceive.onInboundNext(FluxReceive.java:327)
+        at reactor.netty.channel.ChannelOperations.onInboundNext(ChannelOperations.java:310)
+        at reactor.netty.channel.ChannelOperationsHandler.channelRead(ChannelOperationsHandler.java:141)
         at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
         at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
         at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340)
@@ -349,41 +607,69 @@ To resolve this issue, **HV-VES** restart is required.
         at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
         at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
         at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340)
+        at io.netty.handler.ssl.SslHandler.unwrap(SslHandler.java:1429)
+        at io.netty.handler.ssl.SslHandler.decodeJdkCompatible(SslHandler.java:1199)
+        at io.netty.handler.ssl.SslHandler.decode(SslHandler.java:1243)
+        at io.netty.handler.codec.ByteToMessageDecoder.decodeRemovalReentryProtection(ByteToMessageDecoder.java:489)
+        at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:428)
+        at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:265)
+        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
+        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
+        at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340)
         at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1434)
         at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
         at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
         at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:965)
-        at io.netty.channel.epoll.AbstractEpollStreamChannel$EpollStreamUnsafe.epollInReady(AbstractEpollStreamChannel.java:808)
-        at io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:410)
-        at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:310)
+        at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:163)
+        at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:628)
+        at io.netty.channel.nio.NioEventLoop.processSelectedKeysPlain(NioEventLoop.java:528)
+        at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:482)
+        at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:442)
         at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884)
-        at java.lang.Thread.run(Thread.java:748)
-     | single-1
-    p.dcae.collectors.veshv.impl.socket.NettyTcpServer | 2018-10-19T08:53:18.351Z | INFO  | Connection from /172.26.0.6:56924 has been closed |  | single-1
-
+        at java.base/java.lang.Thread.run(Thread.java:834)
+     | org.onap.dcae.collectors.veshv.impl.VesHvCollector	 | DEBUG	 | Released buffer memory after handling message stream
 
 
 The above log is printed when the message payload size is too big. **HV-VES** does not handle messages that exceed specified payload size. Default value is **1048576 bytes (1MiB)**, but it can be configured via cmd or by environment variables.
 
+====
 
+**Invalid GPB data**
 
-====
+Messages with invalid Google Protocol Buffers data encoded are omitted. **HV-VES** responds as follows:
+
+::
+
+    | p.dcae.collectors.veshv.impl.socket.NettyTcpServer	 | DEBUG	 | Client connection request received
+    | p.dcae.collectors.veshv.impl.socket.NettyTcpServer	 | INFO 	 | Handling new connection
+    | p.dcae.collectors.veshv.impl.wire.WireChunkDecoder	 | TRACE	 | Got message with total size of 28 B
+    | p.dcae.collectors.veshv.impl.wire.WireChunkDecoder	 | TRACE	 | Wire payload size: 16 B
+    | org.onap.dcae.collectors.veshv.impl.VesHvCollector	 | TRACE	 | Wire frame header is valid
+    | org.onap.dcae.collectors.veshv.impl.VesHvCollector	 | WARN 	 | Failed to decode ves event header, reason: Protocol message tag had invalid wire type.
+    | p.dcae.collectors.veshv.impl.wire.WireChunkDecoder	 | TRACE	 | End of data in current TCP buffer
 
-**Other invalid messages**
+====
 
+**Invalid Wire Frame**
 
-Messages with **invalid wire frame** or **invalid gpb** data are ommitted and **HV-VES** only logs the connection-related logs as follows:
+Messages with invalid Wire Frame, just like those containing invalid GPB data, will be dropped. The exact reason can be found in logs.
 
 ::
 
-    p.dcae.collectors.veshv.impl.socket.NettyTcpServer | 2018-10-19T09:03:03.345Z | INFO  | Handling connection from /172.26.0.6:57432 |  | reactor-tcp-server-epoll-5
-    p.dcae.collectors.veshv.impl.socket.NettyTcpServer | 2018-10-19T09:04:03.351Z | INFO  | Idle timeout of 60 s reached. Closing connection from /172.26.0.6:57432... |  | reactor-tcp-server-epoll-5
-    p.dcae.collectors.veshv.impl.socket.NettyTcpServer | 2018-10-19T09:04:03.353Z | INFO  | Connection from /172.26.0.6:57432 has been closed |  | reactor-tcp-server-epoll-5
-    p.dcae.collectors.veshv.impl.socket.NettyTcpServer | 2018-10-19T09:04:03.354Z | DEBUG | Channel (/172.26.0.6:57432) closed successfully. |  | reactor-tcp-server-epoll-5
+    | p.dcae.collectors.veshv.impl.socket.NettyTcpServer	 | DEBUG	 | Client connection request received
+    | p.dcae.collectors.veshv.impl.socket.NettyTcpServer	 | INFO 	 | Handling new connection
+    | p.dcae.collectors.veshv.impl.wire.WireChunkDecoder	 | TRACE	 | Got message with total size of 322 B
+    | p.dcae.collectors.veshv.impl.wire.WireChunkDecoder	 | TRACE	 | Wire payload size: 310 B
+    | org.onap.dcae.collectors.veshv.impl.VesHvCollector	 | WARN 	 | Invalid wire frame header, reason: Invalid major version in wire frame header. Expected 1 but was 2
+    | p.dcae.collectors.veshv.impl.wire.WireChunkDecoder	 | TRACE	 | End of data in current TCP buffer
+
+
+====
 
 
 For more information, see the :ref:`hv_ves_behaviors` section.
 
+
 Authorization related errors
 ----------------------------
 
@@ -394,7 +680,7 @@ Authorization related errors
 
 ::
 
-    org.onap.dcae.collectors.veshv.main | 2018-10-22T06:51:54.191Z | ERROR | Failed to start a server | java.io.FileNotFoundException: /etc/ves-hv/server.p12 (No such file or directory)
+    | org.onap.dcae.collectors.veshv.main | ERROR | Failed to start a server | java.io.FileNotFoundException: /etc/ves-hv/server.p12 (No such file or directory)
         at java.io.FileInputStream.open0(Native Method)
         at java.io.FileInputStream.open(FileInputStream.java:195)
         at java.io.FileInputStream.<init>(FileInputStream.java:138)
@@ -421,11 +707,10 @@ Authorization related errors
         at arrow.effects.IO.unsafeRunSync(IO.kt:106)
         at org.onap.dcae.collectors.veshv.utils.arrow.EffectsKt.unsafeRunEitherSync(effects.kt:50)
         at org.onap.dcae.collectors.veshv.main.MainKt.main(main.kt:41)
-    | main
 
 
 The above error is logged when key store is not provided. Similarly, when trust store is not provided, **/etc/ves-hv/trust.p12** file missing is logged.
-**server.p12** and **trust.p12** are default names of key and trust stores. They can be changed by specifying **--trust-store** or **--key-store** command line arguments on deployment.
+**server.p12** and **trust.p12** are default names of key and trust stores. They can be changed by specifying ``--trust-store`` or ``--key-store`` command line arguments on deployment.
 
 ====
 
@@ -433,7 +718,7 @@ The above error is logged when key store is not provided. Similarly, when trust
 
 ::
 
-    org.onap.dcae.collectors.veshv.main | 2018-10-22T06:59:24.039Z | ERROR | Failed to start a server | java.security.UnrecoverableKeyException: failed to decrypt safe contents entry: javax.crypto.BadPaddingException: Given final block not properly padded. Such issues can arise if a bad key is used during decryption.
+    | org.onap.dcae.collectors.veshv.main | ERROR | Failed to start a server | java.security.UnrecoverableKeyException: failed to decrypt safe contents entry: javax.crypto.BadPaddingException: Given final block not properly padded. Such issues can arise if a bad key is used during decryption.
         ... 23 common frames omitted
         Wrapped by: java.io.IOException: keystore password was incorrect
         at sun.security.pkcs12.PKCS12KeyStore.engineLoad(PKCS12KeyStore.java:2059)
@@ -459,7 +744,6 @@ The above error is logged when key store is not provided. Similarly, when trust
         at arrow.effects.IO.unsafeRunSync(IO.kt:106)
         at org.onap.dcae.collectors.veshv.utils.arrow.EffectsKt.unsafeRunEitherSync(effects.kt:50)
         at org.onap.dcae.collectors.veshv.main.MainKt.main(main.kt:41)
-    | main
 
 
 Key or trust store password provided in configuration is invalid.
@@ -470,7 +754,7 @@ Key or trust store password provided in configuration is invalid.
 
 ::
 
-    org.onap.dcae.collectors.veshv.main | 2018-10-22T09:11:38.200Z | ERROR | Failed to start a server | java.io.IOException: DerInputStream.getLength(): lengthTag=111, too big.
+    | org.onap.dcae.collectors.veshv.main | ERROR | Failed to start a server | java.io.IOException: DerInputStream.getLength(): lengthTag=111, too big.
         at sun.security.util.DerInputStream.getLength(DerInputStream.java:599)
         at sun.security.util.DerValue.init(DerValue.java:391)
         at sun.security.util.DerValue.<init>(DerValue.java:332)
@@ -498,7 +782,6 @@ Key or trust store password provided in configuration is invalid.
         at arrow.effects.IO.unsafeRunSync(IO.kt:106)
         at org.onap.dcae.collectors.veshv.utils.arrow.EffectsKt.unsafeRunEitherSync(effects.kt:50)
         at org.onap.dcae.collectors.veshv.main.MainKt.main(main.kt:41)
-    | main
 
 The above is logged when provided keystore has invalid or corrupted content.
 This log also appears when you try to use key store/trust store in archive format other than **PKCS12** (the only supported by **HV-VES** store type).