Restore Exceptions needed for external sources

community/common/src/main/java/org/neo4j/kernel/lifecycle/LifecycleAdapter.java

@@ -25,26 +25,22 @@
 public class LifecycleAdapter implements Lifecycle
 {
     @Override
-    public void init()
-        throws Throwable
+    public void init() throws Throwable
     {
     }
 
     @Override
-    public void start()
-        throws Throwable
+    public void start() throws Throwable
     {
     }
 
     @Override
-    public void stop()
-        throws Throwable
+    public void stop() throws Throwable
     {
     }
 
     @Override
-    public void shutdown()
-        throws Throwable
+    public void shutdown() throws Throwable
     {
     }
 }

community/ssl/src/main/java/org/neo4j/ssl/SslPolicy.java

@@ -97,11 +97,13 @@ private io.netty.handler.ssl.ClientAuth forNetty( ClientAuth clientAuth )
         }
     }
 
+    @SuppressWarnings( "unused" )
     public SslHandler nettyServerHandler( Channel channel ) throws SSLException
     {
         return makeNettyHandler( channel, nettyServerContext() );
     }
 
+    @SuppressWarnings( "unused" )
     public SslHandler nettyClientHandler( Channel channel ) throws SSLException
     {
         return makeNettyHandler( channel, nettyClientContext() );
@@ -112,7 +114,7 @@ private SslHandler makeNettyHandler( Channel channel, SslContext sslContext )
         SSLEngine sslEngine = sslContext.newEngine( channel.alloc() );
         if ( tlsVersions != null )
         {
-            sslEngine.setEnabledProtocols( tlsVersions.toArray( new String[tlsVersions.size()] ) );
+            sslEngine.setEnabledProtocols( tlsVersions.toArray( new String[0] ) );
         }
         return new SslHandler( sslEngine );
     }

enterprise/causal-clustering/src/main/java/org/neo4j/causalclustering/catchup/CatchUpClient.java

@@ -108,7 +108,7 @@ private class CatchUpChannel implements CatchUpChannelPool.Channel
             Bootstrap bootstrap = new Bootstrap().group( eventLoopGroup ).channel( NioSocketChannel.class ).handler( new ChannelInitializer<SocketChannel>()
             {
                 @Override
-                protected void initChannel( SocketChannel ch )
+                protected void initChannel( SocketChannel ch ) throws Exception
                 {
                     CatchUpClientChannelPipeline.initChannel( ch, handler, logProvider, monitors, pipelineWrapper );
                 }

enterprise/causal-clustering/src/main/java/org/neo4j/causalclustering/catchup/CatchUpClientChannelPipeline.java

@@ -59,7 +59,7 @@ private CatchUpClientChannelPipeline()
     }
 
     static void initChannel( SocketChannel ch, CatchUpResponseHandler handler, LogProvider logProvider,
-                             Monitors monitors, PipelineWrapper pipelineWrapper )
+                             Monitors monitors, PipelineWrapper pipelineWrapper ) throws Exception
     {
         CatchupClientProtocol protocol = new CatchupClientProtocol();
 

enterprise/causal-clustering/src/main/java/org/neo4j/causalclustering/catchup/CatchupServer.java

@@ -148,7 +148,7 @@ public synchronized void start()
                 .localAddress( listenAddress.socketAddress() ).childHandler( new ChannelInitializer<SocketChannel>()
                 {
                     @Override
-                    protected void initChannel( SocketChannel ch )
+                    protected void initChannel( SocketChannel ch ) throws Exception
                     {
                         CatchupServerProtocol protocol = new CatchupServerProtocol();
 

enterprise/causal-clustering/src/main/java/org/neo4j/causalclustering/core/consensus/RaftProtocolClientInstaller.java

@@ -42,7 +42,7 @@ public RaftProtocolClientInstaller( LogProvider logProvider, NettyPipelineBuilde
     }
 
     @Override
-    public void install( Channel channel )
+    public void install( Channel channel ) throws Exception
     {
         clientPipelineBuilderFactory.create( channel, log )
                 .addFraming()

enterprise/causal-clustering/src/main/java/org/neo4j/causalclustering/core/consensus/RaftProtocolServerInstaller.java

@@ -47,7 +47,7 @@ public RaftProtocolServerInstaller( ChannelInboundHandler raftMessageHandler, Ne
     }
 
     @Override
-    public void install( Channel channel )
+    public void install( Channel channel ) throws Exception
     {
         pipelineBuilderFactory.create( channel, log )
                 .addFraming()

enterprise/causal-clustering/src/main/java/org/neo4j/causalclustering/handlers/PipelineWrapper.java

@@ -32,7 +32,8 @@
  */
 public interface PipelineWrapper
 {
-    default List<ChannelHandler> handlersFor( Channel channel )
+    @SuppressWarnings( "RedundantThrows" )
+    default List<ChannelHandler> handlersFor( Channel channel ) throws Exception
     {
         return emptyList();
     }

enterprise/causal-clustering/src/main/java/org/neo4j/causalclustering/protocol/NettyPipelineBuilderFactory.java

@@ -35,7 +35,7 @@ public NettyPipelineBuilderFactory( PipelineWrapper wrapper )
         this.wrapper = wrapper;
     }
 
-    public NettyPipelineBuilder create( Channel channel, Log log )
+    public NettyPipelineBuilder create( Channel channel, Log log ) throws Exception
     {
         ChannelPipeline pipeline = channel.pipeline();
         NettyPipelineBuilder builder = NettyPipelineBuilder.with( pipeline, log );

enterprise/causal-clustering/src/main/java/org/neo4j/causalclustering/protocol/ProtocolInstaller.java

@@ -30,7 +30,7 @@ protected ProtocolInstaller( Protocol protocol )
         this.protocol = protocol;
     }
 
-    public abstract void install( Channel channel );
+    public abstract void install( Channel channel ) throws Exception;
 
     public final Protocol protocol()
     {

enterprise/causal-clustering/src/main/java/org/neo4j/causalclustering/protocol/handshake/HandshakeClientInitializer.java

@@ -64,7 +64,7 @@ public HandshakeClientInitializer( LogProvider logProvider, ProtocolRepository p
         this.timeoutStrategy = new ExponentialBackoffStrategy( 1, 2000, MILLISECONDS );
     }
 
-    private void installHandlers( Channel channel, HandshakeClient handshakeClient )
+    private void installHandlers( Channel channel, HandshakeClient handshakeClient ) throws Exception
     {
         pipelineBuilderFactory.create( channel, log )
                 .addFraming()
@@ -75,7 +75,7 @@ private void installHandlers( Channel channel, HandshakeClient handshakeClient )
     }
 
     @Override
-    protected void initChannel( SocketChannel channel )
+    protected void initChannel( SocketChannel channel ) throws Exception
     {
         log.info( "Initiating channel: " + channel );
         HandshakeClient handshakeClient = new HandshakeClient();

enterprise/causal-clustering/src/main/java/org/neo4j/causalclustering/protocol/handshake/HandshakeServerInitializer.java

@@ -50,7 +50,7 @@ public HandshakeServerInitializer( LogProvider logProvider, ProtocolRepository p
     }
 
     @Override
-    public void initChannel( SocketChannel ch )
+    public void initChannel( SocketChannel ch ) throws Exception
     {
         pipelineBuilderFactory.create( ch, log )
                 .addFraming()