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Table of Contents

Overview of Dependencies

Most Islandora Solution Packs and some modules will require that you have one or more of the following dependencies installed so that Islandora Content Models can perform prescribed actions on your data objects. Review Chapter 5 - Islandora Solution Packs to see what dependencies are required for the solution packs you wish to install.

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If you wish to use an iframe with the Islandora Viewer you must configure Apache with  a reverse proxy. Note: These instructions are for configurations with Fedora running on the same server as Drupal.

Configuration Steps:1.

  1. Add the following to Apache's httpd.conf file or desired virtual host, if using Apache virtual hosts:

    Code Block
    languagexml
    ProxyRequests Off

ProxyPreserveHost On
<Proxy \*>

	Order deny,allow

	Allow from all

</Proxy>
ProxyPass /fedora/get http://localhost:8080/fedora/get
ProxyPassReverse /fedora/get http://localhost:8080/fedora/get

ProxyPass /fedora/services http://localhost:8080/fedora/services

ProxyPassReverse /fedora/services http://localhost:8080/fedora/services

ProxyPass /fedora/describe http://localhost:8080/fedora/describe

ProxyPassReverse /fedora/describe http://localhost:8080/fedora/describe
ProxyPass /iiv http://localhost:8080/iiv
ProxyPassReverse /iiv http://localhost:8080/iiv
ProxyPass /fedora/risearch http://localhost:8080/fedora/risearch

ProxyPassReverse /fedora/risearch http://localhost:8080/fedora/risearch
ProxyPass /adore-djatoka http://localhost:8080/adore-djatoka
ProxyPassReverse /adore-djatoka http://localhost:8080/adore-djatoka

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  1. Test your configuration by navigating to http://localhost/fedora/risearch to view the Fedora resource index page.

 

Djatoka

Djatoka is a Java-based open source image server that provides compression and region extraction of JPEG 2000 images, URI-addressability of regions, and support for a rich set of input/output image formats (e.g., BMP, GIF, JPG, PNG, PNM, TIF, JPEG 2000).

Installation Steps:1.

  1. Download and install Djatoka on your Fedora server by following the installation instructions at: http://sourceforge.net/apps/mediawiki/djatoka/index.php?title=Installation.

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  1. For this example, we have installed Djatoka in /opt/adore-djatoka-1.1. Once Djatoka has been verified and installed, you will need to change the environment variables in the $CATALINA_HOME/bin/startup.sh script. At the very end of the file, insert the following:

    Code Block
    . /opt/adore-djatoka-1.1/bin/env.sh

export JAVA_OPTS

echo $JAVA_OPTS

exec "$PRGDIR"/"$EXECUTABLE" start "$@"

...

  1. Then, modify the env.sh file found in /opt/adore-djatoka-1.1/bin/

      a) At the top of the file:

    Change this:

    To this:

    #!/bin/sh
    # setup environment variables for shell script

    # Define DJATOKA_HOME dynamically
    LAUNCHDIR=$PWD
    cd ..

    DJATOKA_HOME=`pwd`
    LIBPATH=$DJATOKA_HOME/lib

    #!/bin/sh
    # setup environment variables for shell script
    CURRENTDIR=$PWD
    # Define DJATOKA_HOME dynamically
    LAUNCHDIR=/opt/adore-djatoka-1.1/bin
    #cd ..

    DJATOKA_HOME=/opt/adore-djatoka-1.1
    LIBPATH=$DJATOKA_HOME/lib

      b) Then, at the bottom of the file:

    Change this:

    To this:

    KAKADU_HOME=$DJATOKA_HOME/bin/$PLATFORM
    export KAKADU_HOME
    cd $LAUNCHDIR

    for line in `ls -1 $LIBPATH | grep '.jar'`
      do
      classpath="$classpath:$LIBPATH/$line"
    done



    #DEBUG="-Xdebug -Xrunjdwp:transport=dt_socket,address=8000,server=y,suspend=n"
    CLASSPATH=.:../build/:$classpath
    JAVA_OPTS="$DEBUG -Djava.awt.headless=true  -Xmx512M -Xms64M -Dkakadu.home=$KAKADU_HOME -Djava.library.path=$LIBPATH/$PLATFORM $KAKADU_LIBRARY_PATH"

    KAKADU_HOME=$DJATOKA_HOME/bin/$PLATFORM
    #cd $LAUNCHDIR


    #for line in `ls -1 $LIBPATH | grep '.jar'`
     # do
     # classpath="$classpath:$LIBPATH/$line"
    #done
    #go back to tomcat dir
    #cd $CURRENTDIR

    #DEBUG="-Xdebug -Xrunjdwp:transport=dt_socket,address=8000,server=y,suspend=n"
    #CLASSPATH=.:../build/:$classpath
    JAVA_OPTS="$JAVA_OPTS -Djava.awt.headless=true -Dkakadu.home=$KAKADU_HOME -Djava.library.path=$LIBPATH/$PLATFORM $KAKADU_LIBRARY_PATH"

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  1. Restart Fedora and test the Djatoka application by going to: http://\[fedora-server\]:8080/adore-djatoka

    To test your installation, click the 'Update Image' button. If you do not see part of an image from the Library of Congress there is a problem with your Djatoka installation. Go back and review the installation instructions to make sure that they were followed correctly.

    Info

    Though not required, it is a good idea to set the path for Djatoka log files. You can do this by adding a line to the log4j.properties file. For example:

    log.dir=/usr/local/fedora/server/logs/

 

Accommodating Viewing Restrictions for Djatoka

The Djatoka image viewer must send authentication credentials to Fedora in order to get titles back. For most set-ups, this communication between Djatoka and Fedora will be direct. However, if you wish to put Djatoka behind an authentication wall to restrict the view of objects to certain users in Fedora, you will need to make some additional configurations.

The islandora-servlet-filter.jar, which is part of the earlier Drupal Server Filter download, is required to facilitate this communication. The islandora-servlet-filter.jar should resides in $CATALINA_HOME/webapps/fedora/WEB-INF/lib

Installation Steps:1.

  1. Make the following change to the web.xml located in $CATALINA_HOME/webapps/fedora/WEB-INF/

    Code Block
    <filter>
<filter-name>DrupalFilter</filter-name>
<filter-class>ca.upei.roblib.fedora.servletfilter.FilterDrupal</filter-class>
</filter>

<filter>
<filter-name>IslandoraAuthFilter</filter-name>
<filter-class>ca.upei.roblib.fedora.servletfilter.FilterIslandoraAuth</filter-class>
</filter>

<filter>
<filter-name>RestApiAuthnFilter</filter-name>
<filter-class>fedora.server.security.servletfilters.FilterRestApiAuthn</filter-class>
</filter>

...

<filter-mapping>
<filter-name>DrupalFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

<filter-mapping>
<filter-name>IslandoraAuthFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

<filter-mapping>
<filter-name>EnforceAuthnFilter</filter-name>
<servlet-name>AxisServlet</servlet-name>
</filter-mapping>

...

  1. Then, modify the $FEDORA_HOME/server/config/filter-drupal.xml file by adding the following the bottom of the file, just before 
</FilterDrupal_Connection>

    Code Block
    <service_requests>
<service name="djatoka">

<\!-\- space-separated list of allowed ips. use 'local' to allow requests from same ip as fedora \-->
<allowed_ips>local</allowed_ips>

<\!-\- request uri must match this regex to be eligible for service access \-->
<allowed_uri_pattern>^.*/(JP2\|TEI)$</allowed_uri_pattern>

<\!-\- <allowed_uri_pattern>^.*$</allowed_uri_pattern> \-->

<\!-\- space-separated list of roles granted to service requests \-->
<roles>administrator fedora_anonymous</roles>

</service>
</service_requests>

...

  1. Restart Fedora to apply the changes.

...

  1. To test the filter, access a Fedora with large image objects that have restricted security policies.

 

ExifTool

ExifTool is a platform-independent Perl library plus a command-line application for reading, writing and editing metadata in a wide variety of formats. ExifTool is used by the Audio Solution Pack to read and write metadata for audio files. Islandora currently uses ExifTool version 3.5.

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