Deprecated and replaced ServerInfo.version()

Author: injectives

driver/clirr-ignored-differences.xml

@@ -1,3 +1,22 @@
 <differences>
-<!--4.0 drivers is not API compatible with 1.0 drivers, as a result we reset API differences from 4.0.0-->
+    <!--4.0 drivers is not API compatible with 1.0 drivers, as a result we reset API differences from 4.0.0-->
+
+    <difference>
+        <className>org/neo4j/driver/summary/ServerInfo</className>
+        <differenceType>7007</differenceType>
+        <method>java.lang.String version()</method>
+    </difference>
+
+    <difference>
+        <className>org/neo4j/driver/summary/ServerInfo</className>
+        <differenceType>7012</differenceType>
+        <method>java.lang.String protocolVersion()</method>
+    </difference>
+
+    <difference>
+        <className>org/neo4j/driver/summary/ServerInfo</className>
+        <differenceType>7012</differenceType>
+        <method>java.lang.String agent()</method>
+    </difference>
+
 </differences>

driver/src/main/java/org/neo4j/driver/internal/async/NetworkConnection.java

@@ -54,6 +54,7 @@ public class NetworkConnection implements Connection
 {
     private final Channel channel;
     private final InboundMessageDispatcher messageDispatcher;
+    private final String serverAgent;
     private final BoltServerAddress serverAddress;
     private final ServerVersion serverVersion;
     private final BoltProtocol protocol;
@@ -69,6 +70,7 @@ public NetworkConnection( Channel channel, ExtendedChannelPool channelPool, Cloc
     {
         this.channel = channel;
         this.messageDispatcher = ChannelAttributes.messageDispatcher( channel );
+        this.serverAgent = ChannelAttributes.serverAgent( channel );
         this.serverAddress = ChannelAttributes.serverAddress( channel );
         this.serverVersion = ChannelAttributes.serverVersion( channel );
         this.protocol = BoltProtocol.forChannel( channel );
@@ -185,6 +187,12 @@ public void terminateAndRelease( String reason )
         }
     }
 
+    @Override
+    public String serverAgent()
+    {
+        return serverAgent;
+    }
+
     @Override
     public BoltServerAddress serverAddress()
     {

driver/src/main/java/org/neo4j/driver/internal/async/connection/ChannelAttributes.java

@@ -33,6 +33,7 @@ public final class ChannelAttributes
     private static final AttributeKey<String> CONNECTION_ID = newInstance( "connectionId" );
     private static final AttributeKey<String> POOL_ID = newInstance( "poolId" );
     private static final AttributeKey<BoltProtocolVersion> PROTOCOL_VERSION = newInstance( "protocolVersion" );
+    private static final AttributeKey<String> SERVER_AGENT = newInstance( "serverAgent" );
     private static final AttributeKey<BoltServerAddress> ADDRESS = newInstance( "serverAddress" );
     private static final AttributeKey<ServerVersion> SERVER_VERSION = newInstance( "serverVersion" );
     private static final AttributeKey<Long> CREATION_TIMESTAMP = newInstance( "creationTimestamp" );
@@ -74,6 +75,16 @@ public static void setProtocolVersion( Channel channel, BoltProtocolVersion vers
         setOnce( channel, PROTOCOL_VERSION, version );
     }
 
+    public static void setServerAgent( Channel channel, String serverAgent )
+    {
+        setOnce( channel, SERVER_AGENT, serverAgent );
+    }
+
+    public static String serverAgent( Channel channel )
+    {
+        return get( channel, SERVER_AGENT );
+    }
+
     public static BoltServerAddress serverAddress( Channel channel )
     {
         return get( channel, ADDRESS );

driver/src/main/java/org/neo4j/driver/internal/async/connection/DirectConnection.java

@@ -20,6 +20,7 @@
 
 import java.util.concurrent.CompletionStage;
 
+import org.neo4j.driver.AccessMode;
 import org.neo4j.driver.internal.BoltServerAddress;
 import org.neo4j.driver.internal.DatabaseName;
 import org.neo4j.driver.internal.DirectConnectionProvider;
@@ -28,7 +29,6 @@
 import org.neo4j.driver.internal.spi.Connection;
 import org.neo4j.driver.internal.spi.ResponseHandler;
 import org.neo4j.driver.internal.util.ServerVersion;
-import org.neo4j.driver.AccessMode;
 
 /**
  * This is a connection used by {@link DirectConnectionProvider} to connect to a remote database.
@@ -111,6 +111,12 @@ public void terminateAndRelease( String reason )
         delegate.terminateAndRelease( reason );
     }
 
+    @Override
+    public String serverAgent()
+    {
+        return delegate.serverAgent();
+    }
+
     @Override
     public BoltServerAddress serverAddress()
     {

driver/src/main/java/org/neo4j/driver/internal/async/connection/RoutingConnection.java

@@ -20,6 +20,7 @@
 
 import java.util.concurrent.CompletionStage;
 
+import org.neo4j.driver.AccessMode;
 import org.neo4j.driver.internal.BoltServerAddress;
 import org.neo4j.driver.internal.DatabaseName;
 import org.neo4j.driver.internal.RoutingErrorHandler;
@@ -29,7 +30,6 @@
 import org.neo4j.driver.internal.spi.Connection;
 import org.neo4j.driver.internal.spi.ResponseHandler;
 import org.neo4j.driver.internal.util.ServerVersion;
-import org.neo4j.driver.AccessMode;
 
 /**
  * A connection used by the routing driver.
@@ -109,6 +109,12 @@ public void terminateAndRelease( String reason )
         delegate.terminateAndRelease( reason );
     }
 
+    @Override
+    public String serverAgent()
+    {
+        return delegate.serverAgent();
+    }
+
     @Override
     public BoltServerAddress serverAddress()
     {

driver/src/main/java/org/neo4j/driver/internal/handlers/HelloResponseHandler.java

@@ -23,14 +23,16 @@
 
 import java.util.Map;
 
+import org.neo4j.driver.Value;
 import org.neo4j.driver.internal.messaging.BoltProtocolVersion;
 import org.neo4j.driver.internal.messaging.v3.BoltProtocolV3;
 import org.neo4j.driver.internal.spi.ResponseHandler;
-import org.neo4j.driver.Value;
 
 import static org.neo4j.driver.internal.async.connection.ChannelAttributes.setConnectionId;
+import static org.neo4j.driver.internal.async.connection.ChannelAttributes.setServerAgent;
 import static org.neo4j.driver.internal.async.connection.ChannelAttributes.setServerVersion;
 import static org.neo4j.driver.internal.util.MetadataExtractor.extractNeo4jServerVersion;
+import static org.neo4j.driver.internal.util.MetadataExtractor.extractServer;
 import static org.neo4j.driver.internal.util.ServerVersion.fromBoltProtocolVersion;
 
 public class HelloResponseHandler implements ResponseHandler
@@ -53,6 +55,9 @@ public void onSuccess( Map<String,Value> metadata )
     {
         try
         {
+            Value serverValue = extractServer( metadata );
+            setServerAgent( channel, serverValue.asString() );
+
             // From Server V4 extracting server from metadata in the success message is unreliable
             // so we fix the Server version against the Bolt Protocol version for Server V4 and above.
             if ( BoltProtocolV3.VERSION.equals( protocolVersion ) )

driver/src/main/java/org/neo4j/driver/internal/spi/Connection.java

@@ -51,6 +51,8 @@ public interface Connection
 
     void terminateAndRelease( String reason );
 
+    String serverAgent();
+
     BoltServerAddress serverAddress();
 
     ServerVersion serverVersion();

driver/src/main/java/org/neo4j/driver/internal/summary/InternalServerInfo.java

@@ -21,18 +21,29 @@
 import java.util.Objects;
 
 import org.neo4j.driver.internal.BoltServerAddress;
+import org.neo4j.driver.internal.messaging.BoltProtocolVersion;
 import org.neo4j.driver.internal.util.ServerVersion;
 import org.neo4j.driver.summary.ServerInfo;
 
 public class InternalServerInfo implements ServerInfo
 {
+    private final String agent;
     private final String address;
     private final String version;
+    private final String protocolVersion;
 
-    public InternalServerInfo( BoltServerAddress address, ServerVersion version )
+    public InternalServerInfo( String agent, BoltServerAddress address, ServerVersion version, BoltProtocolVersion protocolVersion )
     {
+        this.agent = agent;
         this.address = address.toString();
         this.version = version.toString();
+        this.protocolVersion = protocolVersion.toString();
+    }
+
+    @Override
+    public String agent()
+    {
+        return agent;
     }
 
     @Override
@@ -47,6 +58,12 @@ public String version()
         return version;
     }
 
+    @Override
+    public String protocolVersion()
+    {
+        return protocolVersion;
+    }
+
     @Override
     public boolean equals( Object o )
     {

driver/src/main/java/org/neo4j/driver/internal/util/MetadataExtractor.java

@@ -100,7 +100,8 @@ public long extractResultAvailableAfter( Map<String,Value> metadata )
 
     public ResultSummary extractSummary(Query query, Connection connection, long resultAvailableAfter, Map<String,Value> metadata )
     {
-        ServerInfo serverInfo = new InternalServerInfo( connection.serverAddress(), connection.serverVersion() );
+        ServerInfo serverInfo =
+                new InternalServerInfo( connection.serverAgent(), connection.serverAddress(), connection.serverVersion(), connection.protocol().version() );
         DatabaseInfo dbInfo = extractDatabaseInfo( metadata );
         return new InternalResultSummary(query, serverInfo, dbInfo, extractQueryType( metadata ), extractCounters( metadata ), extractPlan( metadata ),
                 extractProfiledPlan( metadata ), extractNotifications( metadata ), resultAvailableAfter,
@@ -132,26 +133,29 @@ public static Bookmark extractBookmarks( Map<String,Value> metadata )
 
     public static ServerVersion extractNeo4jServerVersion( Map<String,Value> metadata )
     {
-        Value versionValue = metadata.get( "server" );
-        if ( versionValue == null || versionValue.isNull() )
+        Value serverValue = extractServer( metadata );
+        ServerVersion server = ServerVersion.version( serverValue.asString() );
+        if ( ServerVersion.NEO4J_PRODUCT.equalsIgnoreCase( server.product() ) )
         {
-            throw new UntrustedServerException( "Server provides no product identifier" );
+            return server;
         }
         else
         {
-            ServerVersion server = ServerVersion.version( versionValue.asString() );
-            if ( ServerVersion.NEO4J_PRODUCT.equalsIgnoreCase( server.product() ) )
-            {
-                return server;
-            }
-            else
-            {
-                throw new UntrustedServerException( "Server does not identify as a genuine Neo4j instance: '" + server.product() + "'" );
-            }
+            throw new UntrustedServerException( "Server does not identify as a genuine Neo4j instance: '" + server.product() + "'" );
+        }
+    }
+
+    public static Value extractServer( Map<String,Value> metadata )
+    {
+        Value versionValue = metadata.get( "server" );
+        if ( versionValue == null || versionValue.isNull() )
+        {
+            throw new UntrustedServerException( "Server provides no product identifier" );
         }
+        return versionValue;
     }
 
-    private static QueryType extractQueryType(Map<String,Value> metadata )
+    private static QueryType extractQueryType( Map<String,Value> metadata )
     {
         Value typeValue = metadata.get( "type" );
         if ( typeValue != null )

driver/src/main/java/org/neo4j/driver/summary/ServerInfo.java

@@ -31,9 +31,27 @@ public interface ServerInfo
     String address();
 
     /**
-     * Returns a string telling which version of the server the query was executed.
-     * Supported since neo4j 3.1.
+     * Returns a string telling which version of the server the query was executed. Supported since neo4j 3.1.
+     *
      * @return The server version.
+     * @deprecated in 4.3, please use {@link ServerInfo#agent()}, {@link ServerInfo#protocolVersion()}, or call the <i>dbms.components</i> procedure instead.
+     * <b>Method might be removed in the next major release.</b>
      */
+    @Deprecated
     String version();
+
+    /**
+     * Returns Bolt protocol version with which the remote server communicates. This is returned as a string in format X.Y where X is the major version and Y is
+     * the minor version.
+     *
+     * @return The Bolt protocol version.
+     */
+    String protocolVersion();
+
+    /**
+     * Returns server agent string by which the remote server identifies itself.
+     *
+     * @return The agent string.
+     */
+    String agent();
 }