Development needed for Cantaloupe upgrade from 4.0.3 to 4.1.5

Issue description

I started poking at a potential Cantaloupe upgrade from 4.0.3 to 4.1.5.

Additionally, I was curious if we could implement the XACML / delegates.rb fix outlined here https://groups.google.com/forum/#!msg/islandora/oW_luXn4BNE/bMerf3q_AwAJ

I was able to change the version number in the Dockerfile and got a local build running.

I changed the delegates.rb code to:

  def httpsource_resource_info(options = {})
    logger = Java::edu.illinois.library.cantaloupe.script.Logger
    require 'cgi'
    values = CGI::unescape(context['identifier']).split('~')
    if values.length != 2
      return nil
    end
    token = context['request_headers']['x-islandora-token']
    logger.info("Token #{token}.")
    pid = values[0]
    dsid = values[1]
    return { 'uri' => "http://apache/islandora/object/#{pid}/datastream/#{dsid}/view?token=#{token}"
  end

Within https://isle.localdomain/admin/islandora/islandora_viewers/openseadragon
- I clicked the Add token as header checkbox (changes to green when clicked) which means "Instead of sending the token as a query parameter, it will be sent in the X-ISLANDORA-TOKEN header."
- I changed the IIF Identifier from the original value of [islandora_openseadragon:pid]~[islandora_openseadragon:dsid]~[islandora_openseadragon:token] to the new suggested value of [islandora_openseadragon:pid]~[islandora_openseadragon:dsid]
I setup a demo site and ingested a tiff file as a test.
The problem is that no image displays within the viewer and Cantaloupe throws a 500 error. (see below)
I can confirm I see the X-ISLANDORA-TOKEN: 04170d62759c2e7642db64c37b495544eb399bb72d9e2088a2f6fcafc5d9266f within the request headers but am blocked by the 500 error.

More research will be required for this fix to proceed.

Please also consider Jonthan Green's delegates.rb

Questions:

Is the current version of Java (openjdk 1.8 / Java 8) sufficient?
If the token and header are required will an additional code change to the isle-apache' image be required?
- Add ProxyPassReverseCookiePath /cantaloupe/iiif/2 /iiif/2 to the vhost
- Add ProxyPassReverseCookieDomain cantaloupe/iiif/2 islandora-vagrant to the vhost. please note islandora-vagrant is not the correct setting, use the appropriate ISLE service or domain name instead?

Do we need to compile Cantaloupe instead of using the pre-made war files?

example from Diego's gist above:

cd $home
git clone https://github.com/cantaloupe-project/cantaloupe
cd cantaloupe
git checkout release/4.1
mvn clean package -DskipTests

For an issue, describe steps to reproduce the issue

System setup (OS information, software versions, etc):

Steps:

Edit Line 16 of the ISLE image-services Dockerfile and change the ${CANTALOUPE_VERSION:-4.0.3} to `${CANTALOUPE_VERSION:-4.1.5}

Change the delegates.rb code to

```bash
def httpsource_resource_info(options = {})
logger = Java::edu.illinois.library.cantaloupe.script.Logger
require 'cgi'
values = CGI::unescape(context['identifier']).split('~')
if values.length != 2
  return nil
end
token = context['request_headers']['x-islandora-token']
logger.info("Token #{token}.")
pid = values[0]
dsid = values[1]
return { 'uri' => "http://apache/islandora/object/#{pid}/datastream/#{dsid}/view?token=#{token}"
end

build the image and push to your docker image repo
update the docker-compose.demo.yml and change the image-services image to your newly built image
docker-compose up -d
Run the installer script docker exec -it isle-apache-ld bash /utility-scripts/isle_drupal_build_tools/isle_islandora_installer.sh
Login as the Drupal admin account and within https://isle.localdomain/admin/islandora/islandora_viewers/openseadragon click the Add token as header checkbox (changes to green when clicked) which means "Instead of sending the token as a query parameter, it will be sent in the X-ISLANDORA-TOKEN header."
Change the IIF Identifier from the original value of [islandora_openseadragon:pid]~[islandora_openseadragon:dsid]~[islandora_openseadragon:token] to the new suggested value of [islandora_openseadragon:pid]~[islandora_openseadragon:dsid] and click the Save button at the bottom of the form.
ingest a sample tif file and view results

What's the expected result?

Working Cantaloupe 4.1.5 displaying JP2s through the Openseadragon viewer

What's the actual result?

No JP2s displayed through Openseadragon viewer and 500 errors from Cantaloupe

Additional details / screenshots

Cantaloupe 500 error from logs

receiver is null

java.lang.NullPointerException: receiver is null
    at org.jruby.embed.jsr223.JRubyEngine.invokeMethod(JRubyEngine.java:208)
    at edu.illinois.library.cantaloupe.script.DelegateProxy.invokeUncached(DelegateProxy.java:363)
    at edu.illinois.library.cantaloupe.script.DelegateProxy.invoke(DelegateProxy.java:330)
    at edu.illinois.library.cantaloupe.script.DelegateProxy.invoke(DelegateProxy.java:315)
    at edu.illinois.library.cantaloupe.script.DelegateProxy.authorize(DelegateProxy.java:174)
    at edu.illinois.library.cantaloupe.auth.DelegateAuthorizer.authorize(DelegateAuthorizer.java:30)
    at edu.illinois.library.cantaloupe.resource.AbstractResource.authorize(AbstractResource.java:243)
    at edu.illinois.library.cantaloupe.resource.iiif.v2.InformationResource.doGET(InformationResource.java:62)
    at edu.illinois.library.cantaloupe.resource.HandlerServlet.handle(HandlerServlet.java:98)
    at edu.illinois.library.cantaloupe.resource.HandlerServlet.doGet(HandlerServlet.java:36)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:634)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.apache.catalina.filters.CorsFilter.handleNonCORS(CorsFilter.java:364)
    at org.apache.catalina.filters.CorsFilter.doFilter(CorsFilter.java:170)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:543)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
    at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:678)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:609)
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:810)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1623)
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Thread.java:748)

Islandora-Collaboration-Group / ISLE

Development needed for Cantaloupe upgrade from 4.0.3 to 4.1.5 #376