REST API not working

[George Kozak]

Hi...

I wrote about this back on January 8th, but didn't get any replies...so I am trying again :-)

In our DSpace 6.2 installation, if I try to access the REST API, the system responds with "Page Not Found" as if I had typed in an inaccurate URL.  It does this even when I try:

curl https://<my dspace install>/rest/test

In the tomcat server.xml, I have:

<Context path="/rest" docBase="/[path to my tomcat]/webapps/rest" />  

Does anyone have any ideas why the code would not recognize the REST API?

(PS: it worked fine in DSpace 5.5)

Thanks!

--

***************************
George Kozak
Digital Library Specialist
Cornell University Library - IT
218 Olin Library
Cornell University
Ithaca, NY 14853
607-255-8924

gs...@cornell.edu

[Hardy Pottinger]

Hi, George, by any chance are you putting your Tomcat server behind a reverse proxy? If so, you'll probably want to drop the security constraint for the REST-API, since you don't need to encrypt traffic between the reverse proxy and Tomcat. Here's an example of what I mean:

https://github.com/UCLALibrary/DSpace/pull/18/files

Now, be careful, do *not* drop that constraint if you're exposing Tomcat to the world. :-)

--Hardy

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[George Kozak]

Hi, Hardy:

Thanks for the suggestion.  Yes, our tomcat sits behind a reverse proxy.  However, after removing the Security constraint from the web.xml for the Rest API, and restarting tomcat, I still get the same "Page Not Found" error.  I'm definitely stumped.

George

   

[George Kozak]

Hi, Hardy:

I think I found the problem in the catalina.out log.

I see:

SEVERE: Error listenerStart

SEVERE: Context [/rest] startup failed due to previous errors

SEVERE: Exception sending context destroyed event to listener instance of class org.dspace.app.util.DSpaceWebappListener

So, for some reason the Rest API is failing.  Still not sure why, but I will continue to dig.

George 

On Mon, Jan 22, 2018 at 2:11 PM, Hardy Pottinger <hardy.p...@gmail.com> wrote:

[Mark H. Wood]

On Monday, January 22, 2018 at 4:13:24 PM UTC-5, George Kozak wrote:

Hi, Hardy:

I think I found the problem in the catalina.out log.

I see:

SEVERE: Error listenerStart

SEVERE: Context [/rest] startup failed due to previous errors

SEVERE: Exception sending context destroyed event to listener instance of class org.dspace.app.util.DSpaceWebappListener

So, for some reason the Rest API is failing.  Still not sure why, but I will continue to dig.

There may be more clues in the Tomcat log for the specific <Host>, such as localhost.2018-01-18.log

[Paul Warner]

Hi,

It sounds like you are having other problems, George, but I just struggled with Dspace's Rest interface, and I can confirm the Apache Proxy/ReverseProxy problem.  That stumped me for a while, because we are running https through Apache, and I thought I should leave the https in.  But we are not using https for Tomcat, of course (duh!), since it is running behind Apache - so I had to comment out the https segment in the Rest config before I could get it to work.  I have tomcat configured to listen only on localhost, so I can now access the Rest interface only on that machine.  I use curl on the command line.  Everything works.  But I have not included rest in the Proxy/ReverseProxy list for Apache, so it is not available in the browser.  I get a 404 just like you do, George.  I do not want everyone to be able to use it online, so this suits me.  

I post this because these kinds of fine points can be overlooked.  I hope it helps someone.

Best regards,

Paul

[George Kozak]

Thanks, Paul:

I will try and see if I can get things working following your directions.

George

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[George Kozak]

Thanks, Mark...I will keep digging.

George

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