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72 changes: 72 additions & 0 deletions
72
...-clustering/src/main/java/org/neo4j/causalclustering/discovery/DnsResolutionResolver.java
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/* | |||
* Copyright (c) 2002-2017 "Neo Technology," | |||
* Network Engine for Objects in Lund AB [http://neotechnology.com] | |||
* | |||
* This file is part of Neo4j. | |||
* | |||
* Neo4j is free software: you can redistribute it and/or modify | |||
* it under the terms of the GNU Affero General Public License as | |||
* published by the Free Software Foundation, either version 3 of the | |||
* License, or (at your option) any later version. | |||
* | |||
* This program is distributed in the hope that it will be useful, | |||
* but WITHOUT ANY WARRANTY; without even the implied warranty of | |||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |||
* GNU Affero General Public License for more details. | |||
* | |||
* You should have received a copy of the GNU Affero General Public License | |||
* along with this program. If not, see <http://www.gnu.org/licenses/>. | |||
*/ | |||
package org.neo4j.causalclustering.discovery; | |||
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import java.net.InetAddress; | |||
import java.net.UnknownHostException; | |||
import java.util.Collection; | |||
import java.util.HashSet; | |||
import java.util.Set; | |||
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import org.neo4j.helpers.AdvertisedSocketAddress; | |||
import org.neo4j.logging.Log; | |||
import org.neo4j.logging.LogProvider; | |||
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import static java.lang.String.format; | |||
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public class DnsResolutionResolver implements ResolutionResolver | |||
{ | |||
private final Log userLog; | |||
private final Log log; | |||
private final DomainNameResolver domainNameResolver; | |||
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public DnsResolutionResolver( LogProvider logProvider, LogProvider userLogProvider, | |||
DomainNameResolver domainNameResolver ) | |||
{ | |||
log = logProvider.getLog( getClass() ); | |||
userLog = userLogProvider.getLog( getClass() ); | |||
this.domainNameResolver = domainNameResolver; | |||
} | |||
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@Override | |||
public Collection<AdvertisedSocketAddress> resolve( AdvertisedSocketAddress initialAddress ) | |||
{ | |||
Set<AdvertisedSocketAddress> addresses = new HashSet<>(); | |||
try | |||
{ | |||
InetAddress[] ipAddresses = domainNameResolver.resolveDomainName( initialAddress.getHostname() ); | |||
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for ( InetAddress ipAddress : ipAddresses ) | |||
{ | |||
addresses.add( new AdvertisedSocketAddress( ipAddress.getHostAddress(), initialAddress.getPort() ) ); | |||
} | |||
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userLog.info( "Resolved initial host '%s' to %s", initialAddress, addresses ); | |||
return addresses; | |||
} | |||
catch ( UnknownHostException e ) | |||
{ | |||
log.error( format( "Failed to resolve host `%s` to IPs due to error: %s", initialAddress, e.getMessage() ), e ); | |||
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addresses.add( initialAddress ); | |||
return addresses; | |||
} | |||
} | |||
} |
28 changes: 28 additions & 0 deletions
28
...sal-clustering/src/main/java/org/neo4j/causalclustering/discovery/DomainNameResolver.java
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/* | |||
* Copyright (c) 2002-2017 "Neo Technology," | |||
* Network Engine for Objects in Lund AB [http://neotechnology.com] | |||
* | |||
* This file is part of Neo4j. | |||
* | |||
* Neo4j is free software: you can redistribute it and/or modify | |||
* it under the terms of the GNU Affero General Public License as | |||
* published by the Free Software Foundation, either version 3 of the | |||
* License, or (at your option) any later version. | |||
* | |||
* This program is distributed in the hope that it will be useful, | |||
* but WITHOUT ANY WARRANTY; without even the implied warranty of | |||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |||
* GNU Affero General Public License for more details. | |||
* | |||
* You should have received a copy of the GNU Affero General Public License | |||
* along with this program. If not, see <http://www.gnu.org/licenses/>. | |||
*/ | |||
package org.neo4j.causalclustering.discovery; | |||
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import java.net.InetAddress; | |||
import java.net.UnknownHostException; | |||
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public interface DomainNameResolver | |||
{ | |||
InetAddress[] resolveDomainName(String hostname) throws UnknownHostException; | |||
} |
31 changes: 31 additions & 0 deletions
31
...clustering/src/main/java/org/neo4j/causalclustering/discovery/DomainNameResolverImpl.java
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/* | |||
* Copyright (c) 2002-2017 "Neo Technology," | |||
* Network Engine for Objects in Lund AB [http://neotechnology.com] | |||
* | |||
* This file is part of Neo4j. | |||
* | |||
* Neo4j is free software: you can redistribute it and/or modify | |||
* it under the terms of the GNU Affero General Public License as | |||
* published by the Free Software Foundation, either version 3 of the | |||
* License, or (at your option) any later version. | |||
* | |||
* This program is distributed in the hope that it will be useful, | |||
* but WITHOUT ANY WARRANTY; without even the implied warranty of | |||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |||
* GNU Affero General Public License for more details. | |||
* | |||
* You should have received a copy of the GNU Affero General Public License | |||
* along with this program. If not, see <http://www.gnu.org/licenses/>. | |||
*/ | |||
package org.neo4j.causalclustering.discovery; | |||
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import java.net.InetAddress; | |||
import java.net.UnknownHostException; | |||
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public class DomainNameResolverImpl implements DomainNameResolver | |||
{ | |||
public InetAddress[] resolveDomainName(String hostname) throws UnknownHostException | |||
{ | |||
return InetAddress.getAllByName( hostname ); | |||
} | |||
} |
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