NanoSparqlServer startup problem / only listing directory contents

[Jan]

I want to embed NanoSparqlServer into an existing application.
I did this according to https://wiki.blazegraph.com/wiki/index.php/NanoSparqlServer#Embedded_.28using_Jetty.29

I used NSSEmbeddedExample.java located here: https://sourceforge.net/p/bigdata/git/ci/master/tree/bigdata-sails/src/samples/com/bigdata/samples/NSSEmbeddedExample.java

The output from the application is:

BlazeGraph(TM) Graph Engine

                   Flexible
                   Reliable
                  Affordable
      Web-Scale Computing for the Enterprise

Copyright SYSTAP, LLC DBA Blazegraph 2006-2016.  All rights reserved.

localhost
Fri Apr 01 15:36:09 CEST 2016
Linux/3.13.0-83-generic amd64
Intel(R) Core(TM) i5 CPU         750  @ 2.67GHz Family 6 Model 30 Stepping 5, GenuineIntel #CPU=4
Oracle Corporation 1.7.0_95
freeMemory=116669432
buildVersion=2.0.1
gitCommit=217ec27fea39d458d275bd8a809eeaa5e9772982

Dependency         License                                                        
ICU                http://source.icu-project.org/repos/icu/icu/trunk/license.html 
bigdata-ganglia    http://www.apache.org/licenses/LICENSE-2.0.html                
blueprints-core    https://github.com/tinkerpop/blueprints/blob/master/LICENSE.txt
colt               http://acs.lbl.gov/software/colt/license.html                  
commons-codec      http://www.apache.org/licenses/LICENSE-2.0.html                
commons-fileupload http://www.apache.org/licenses/LICENSE-2.0.html                
commons-io         http://www.apache.org/licenses/LICENSE-2.0.html                
commons-logging    http://www.apache.org/licenses/LICENSE-2.0.html                
dsiutils           http://www.gnu.org/licenses/lgpl-2.1.html                      
fastutil           http://www.apache.org/licenses/LICENSE-2.0.html                
flot               http://www.opensource.org/licenses/mit-license.php             
high-scale-lib     http://creativecommons.org/licenses/publicdomain               
httpclient         http://www.apache.org/licenses/LICENSE-2.0.html                
httpclient-cache   http://www.apache.org/licenses/LICENSE-2.0.html                
httpcore           http://www.apache.org/licenses/LICENSE-2.0.html                
httpmime           http://www.apache.org/licenses/LICENSE-2.0.html                
jackson-core       http://www.apache.org/licenses/LICENSE-2.0.html                
jetty              http://www.apache.org/licenses/LICENSE-2.0.html                
jquery             https://github.com/jquery/jquery/blob/master/MIT-LICENSE.txt   
log4j              http://www.apache.org/licenses/LICENSE-2.0.html                
lucene             http://www.apache.org/licenses/LICENSE-2.0.html                
nanohttp           http://elonen.iki.fi/code/nanohttpd/#license                   
rexster-core       https://github.com/tinkerpop/rexster/blob/master/LICENSE.txt   
river              http://www.apache.org/licenses/LICENSE-2.0.html                
semargl            https://github.com/levkhomich/semargl/blob/master/LICENSE      
servlet-api        http://www.apache.org/licenses/LICENSE-2.0.html                
sesame             http://www.openrdf.org/download.jsp                            
slf4j              http://www.slf4j.org/license.html                              
zookeeper          http://www.apache.org/licenses/LICENSE-2.0.html                

WARN : ServiceProviderHook.java:171: Running.
WARN : NanoSparqlServer.java:514: Starting NSS
serviceURL: http://localhost:8888

The service seems to be running normally. Although when accessing localhost:8888 the server only lists the directory contents.

/bigdata/sparql is not found.

Any ideas?

[Brad Bebee]

The issue here is that the jetty.xml used needs to specify the path to the war file (or at least the skeleton). How are you including blazegraph? The StandaloneNanoSparqlServer in the executable jar is a pretty good example: https://github.com/blazegraph/database/blob/master/blazegraph-jar/src/main/java/com/bigdata/rdf/sail/webapp/StandaloneNanoSparqlServer.java.

The jetty.xml (https://github.com/blazegraph/database/blob/master/blazegraph-jar/src/main/resources/jetty.xml) in that case assumes that the WAR is at the root of the classpath.

It may work if you include the blazegraph.jar (bundled artifact) in your dependencies.

If you can provide more details on the artifacts you're including, we can make a more specific recommendation.

I created a ticket to update the documentation: https://jira.blazegraph.com/browse/BLZG-1858

[Brad Bebee]

Jan,

Just wanted to follow-up on this one. Were you able to track it down?

Thanks, --Brad

[Jan]

Thank you for your response, Brad.

I needed to work on something else, which is why I can't tell right now.
But I will continue to work on this in the forseeable future :)
I did not knew about the StandaloneNanoSparqlServer.java file and will have a look at it.

I will tell you when I have something to report on this issue.

[Brad Bebee]

OK -- sounds good. Just let us know.

[Jan]

Providing jettyXml as in StandaloneNanoSparqlServer.java did the trick!
After adding two lines of code it worked:

String jettyXml = System.getProperty(SystemProperties.JETTY_XML, "jetty.xml");
System.setProperty("jetty.home", jettyXml.getClass().getResource("/war").toExternalForm());

Thank you very much for your help!