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Subject: Re: How to make a custom connection source available in log4j 2
 config?
From: Ralph Goers <ralph.goers@dslextreme.com>
In-Reply-To: 
 <CAGuY4YVdZ8b=GHwDwOsDXPF_fQMXAafEVE7usfyKoBPS6sJ6Jw@mail.gmail.com>
Date: Wed, 16 Apr 2014 14:58:09 -0700
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Message-Id: <508D5C8E-330A-4317-847F-D1559C879366@dslextreme.com>
References: 
 <CAGuY4YVdZ8b=GHwDwOsDXPF_fQMXAafEVE7usfyKoBPS6sJ6Jw@mail.gmail.com>
To: Log4J Users List <log4j-user@logging.apache.org>

If you are using 2.0-rc1 then you need to make sure that you either:
a) have the packages attribute specified on the configuration element =
with the correct package name of your plugin.
b) have run the PluginManager against your plugin and included the file =
it generated in your jar.

An enhancement was recently added to trunk that cause the plugin file to =
be generated by an annotation processor that is invoked during the =
compile, making it easier for plugins to be located automatically.

Ralph

On Apr 16, 2014, at 12:55 PM, Jeff Shaw <jeff@bitgladiator.com> wrote:

> Hello,
> I made a custom connection source that I want to use. (Source follows
> this message.) However, when I attempt to use my BoneCP connection
> source in my config, I get the error, "ERROR JDBC contains an invalid
> element or attribute "BoneCP"". What else do I need to do to make my
> custom connection source available in the configuration?
>=20
> I'm hoping the answer will also apply to a custom appender and manager
> I've written, neither of which work because they also cannot be
> instantiated from the configuration, however the error is a class not
> found error.
>=20
> Thanks,
> Jeff
>=20
> Source:
>=20
> /**
> * Copyright (c) Bit Gladiator on 2014.
> */
>=20
> @Plugin(name =3D "BoneCP", category=3D"Core", elementType =3D
> "connectionSource", printObject =3D true)
> public class BoneCPConnectionSource implements ConnectionSource {
>  private static final Logger LOGGER =3D StatusLogger.getLogger();
>=20
>  private final BoneCP pool;
>=20
>  private BoneCPConnectionSource(final BoneCP pool) {
>    this.pool =3D pool;
>  }
>=20
>  @PluginFactory
>  public static BoneCPConnectionSource createConnectionSource(
>    @PluginAttribute("url") final String url,
>    @PluginAttribute("username") final String username,
>    @PluginAttribute("password") final String password,
>    @PluginAttribute("partitionCount") final String partitionCount,
>    @PluginAttribute("connectionsPerPartition") final String
> connectionsPerPartition
>  ) {
>    BoneCPConfig config =3D new BoneCPConfig();
>    config.setJdbcUrl(url);
>    config.setUsername(username);
>    config.setPassword(password);
>    config.setPartitionCount(Integer.parseInt(partitionCount));
>    =
config.setMaxConnectionsPerPartition(Integer.parseInt(connectionsPerPartit=
ion));
>    try {
>      BoneCP pool =3D new BoneCP(config);
>      return new BoneCPConnectionSource(pool);
>    } catch (SQLException e) {
>      LOGGER.error("Failed to create the connection pool.");
>      return null;
>    }
>  }
>=20
>  @Override
>  public Connection getConnection() throws SQLException {
>    return pool.getConnection();
>  }
>=20
>  @Override
>  public String toString() {
>    return pool.getConfig().toString();
>  }
> }
>=20
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> For additional commands, e-mail: log4j-user-help@logging.apache.org
>=20


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