Configuration

This consists of the following steps

1. configure a database
2. set up the application contoller configuration file
3. set up any applications and the application description file

Database setup and JNDI reference

Need to configure a database - hsqldb is the only database that is supported at the moment

• set up the database

• create the tables in the database

• create the JNDI datasource reference

• ensure that tomcat has the database jar and the necessary commons jars in its classpath - put in common/lib

Application Controller Configuration

Create a JNDI reference to the configuration file - this reference should be called AstrogridApplicationsConfigURL Although tomcat 4 does supply a tool to set the JNDI resources, it appears to be buggy and the best way is probably to edit the $CATALINA_HOME/conf/server.xml file directly. You can place the definitions in the <DefaultContext> element (within an <engine> element) or it can be placed in the application specific context

A typical installation looks like this

         <Environment description="properties file" name="AstrogridApplicationsConfigURL" override="true" type="java.lang.String" value="file:///data/work/Test.properties"/>

          <Resource name="jdbc/AstrogridACDatasource" scope="Shareable" type="javax.sql.DataSource"/>

          <ResourceParams name="jdbc/AstrogridACDatasource">

       <parameter>

        <name>factory</name>

        <value>org.apache.commons.dbcp.BasicDataSourceFactory</value>

        </parameter>

            <parameter>

              <name>maxWait</name>

              <value>5000</value>

            </parameter>

            <parameter>

              <name>maxActive</name>

              <value>4</value>

            </parameter>

            <parameter>

              <name>password</name>

              <value>veritas</value>

            </parameter>

            <parameter>

              <name>url</name>

              <value>jdbc:hsqldb:hsql://localhost:9001</value>

            </parameter>

            <parameter>

              <name>driverClassName</name>

              <value>org.hsqldb.jdbcDriver</value>

            </parameter>

            <parameter>

              <name>maxIdle</name>

              <value>2</value>

            </parameter>

            <parameter>

              <name>username</name>

              <value>sa</value>

            </parameter>

          </ResourceParams>

WorkingDirectory=/data/work/astrogrid/src/applications/build/workdir

ApplicationConfigFile=/data/work/astrogrid/src/applications/test/config/TestApplicationConfig.xml

The workingdirectory should point to a directory that the process running the applicationController can write to. It creates subdirectories in this directory to create a runtime environment for each of the application instances that it runs. The ApplicationConfigFile points to the file that contains all of the descriptions of the applications that the application controller can run. The contents of this file are describe in more detail on the Applicatons Setup page