Hi I'm using Redbridge to integrate my rails site with the shinidig project to
allow it to act as an open social container. For the most part the code to
retrieve data is working with my models but when I try to do anything that
modifies data I get the following exception (Note the *** bold line in the
exception indicating the line in the script):
NameError: uninitialized constant Arel::Relation::Session
load_missing_constant at /home/mike/Aptana Studio 3
Workspace/shindig/java/server/src/main/webapp/WEB-INF/lib/jruby/1.8/gems/activesupport-3.0.0/lib/active_support/dependencies.rb:506
const_missing at /home/mike/Aptana Studio 3
Workspace/shindig/java/server/src/main/webapp/WEB-INF/lib/jruby/1.8/gems/activesupport-3.0.0/lib/active_support/dependencies.rb:183
each at org/jruby/RubyArray.java:1572
const_missing at /home/mike/Aptana Studio 3
Workspace/shindig/java/server/src/main/webapp/WEB-INF/lib/jruby/1.8/gems/activesupport-3.0.0/lib/active_support/dependencies.rb:181
session at /home/mike/Aptana Studio 3
Workspace/shindig/java/server/src/main/webapp/WEB-INF/lib/jruby/1.8/gems/arel-1.0.1/lib/arel/algebra/relations/relation.rb:10
insert at /home/mike/Aptana Studio 3
Workspace/shindig/java/server/src/main/webapp/WEB-INF/lib/jruby/1.8/gems/arel-1.0.1/lib/arel/algebra/relations/relation.rb:159
send at org/jruby/RubyKernel.java:2042
insert at /home/mike/Aptana Studio 3
Workspace/shindig/java/server/src/main/webapp/WEB-INF/lib/jruby/1.8/gems/activerecord-3.0.0/lib/active_record/relation.rb:14
create at /home/mike/Aptana Studio 3
Workspace/shindig/java/server/src/main/webapp/WEB-INF/lib/jruby/1.8/gems/activerecord-3.0.0/lib/active_record/persistence.rb:271
create at /home/mike/Aptana Studio 3
Workspace/shindig/java/server/src/main/webapp/WEB-INF/lib/jruby/1.8/gems/activerecord-3.0.0/lib/active_record/timestamp.rb:47
create at /home/mike/Aptana Studio 3
Workspace/shindig/java/server/src/main/webapp/WEB-INF/lib/jruby/1.8/gems/activerecord-3.0.0/lib/active_record/callbacks.rb:281
_run_create_callbacks at /home/mike/Aptana Studio 3
Workspace/shindig/java/server/src/main/webapp/WEB-INF/lib/jruby/1.8/gems/activesupport-3.0.0/lib/active_support/callbacks.rb:428
create at /home/mike/Aptana Studio 3
Workspace/shindig/java/server/src/main/webapp/WEB-INF/lib/jruby/1.8/gems/activerecord-3.0.0/lib/active_record/callbacks.rb:281
create_or_update at /home/mike/Aptana Studio 3
Workspace/shindig/java/server/src/main/webapp/WEB-INF/lib/jruby/1.8/gems/activerecord-3.0.0/lib/active_record/persistence.rb:247
create_or_update at /home/mike/Aptana Studio 3
Workspace/shindig/java/server/src/main/webapp/WEB-INF/lib/jruby/1.8/gems/activerecord-3.0.0/lib/active_record/callbacks.rb:277
_run_save_callbacks at /home/mike/Aptana Studio 3
Workspace/shindig/java/server/src/main/webapp/WEB-INF/lib/jruby/1.8/gems/activesupport-3.0.0/lib/active_support/callbacks.rb:438
create_or_update at /home/mike/Aptana Studio 3
Workspace/shindig/java/server/src/main/webapp/WEB-INF/lib/jruby/1.8/gems/activerecord-3.0.0/lib/active_record/callbacks.rb:277
save at /home/mike/Aptana Studio 3
Workspace/shindig/java/server/src/main/webapp/WEB-INF/lib/jruby/1.8/gems/activerecord-3.0.0/lib/active_record/persistence.rb:39
save at /home/mike/Aptana Studio 3
Workspace/shindig/java/server/src/main/webapp/WEB-INF/lib/jruby/1.8/gems/activerecord-3.0.0/lib/active_record/validations.rb:43
save at /home/mike/Aptana Studio 3
Workspace/shindig/java/server/src/main/webapp/WEB-INF/lib/jruby/1.8/gems/activerecord-3.0.0/lib/active_record/attribute_methods/dirty.rb:21
save at /home/mike/Aptana Studio 3
Workspace/shindig/java/server/src/main/webapp/WEB-INF/lib/jruby/1.8/gems/activerecord-3.0.0/lib/active_record/transactions.rb:237
with_transaction_returning_status at /home/mike/Aptana Studio 3
Workspace/shindig/java/server/src/main/webapp/WEB-INF/lib/jruby/1.8/gems/activerecord-3.0.0/lib/active_record/transactions.rb:289
transaction at /home/mike/Aptana Studio 3
Workspace/shindig/java/server/src/main/webapp/WEB-INF/lib/jruby/1.8/gems/activerecord-3.0.0/lib/active_record/connection_adapters/abstract/database_statements.rb:139
transaction at /home/mike/Aptana Studio 3
Workspace/shindig/java/server/src/main/webapp/WEB-INF/lib/jruby/1.8/gems/activerecord-3.0.0/lib/active_record/transactions.rb:204
with_transaction_returning_status at /home/mike/Aptana Studio 3
Workspace/shindig/java/server/src/main/webapp/WEB-INF/lib/jruby/1.8/gems/activerecord-3.0.0/lib/active_record/transactions.rb:287
save at /home/mike/Aptana Studio 3
Workspace/shindig/java/server/src/main/webapp/WEB-INF/lib/jruby/1.8/gems/activerecord-3.0.0/lib/active_record/transactions.rb:237
rollback_active_record_state! at /home/mike/Aptana Studio 3
Workspace/shindig/java/server/src/main/webapp/WEB-INF/lib/jruby/1.8/gems/activerecord-3.0.0/lib/active_record/transactions.rb:248
save at /home/mike/Aptana Studio 3
Workspace/shindig/java/server/src/main/webapp/WEB-INF/lib/jruby/1.8/gems/activerecord-3.0.0/lib/active_record/transactions.rb:236
create at /home/mike/Aptana Studio 3
Workspace/shindig/java/server/src/main/webapp/WEB-INF/lib/jruby/1.8/gems/activerecord-3.0.0/lib/active_record/base.rb:498
*** (root) at <script>:3
May 4, 2011 10:56:24 AM org.apache.shindig.protocol.ApiServlet
responseItemFromException
INFO: Returning a response error as result of a protocol exception.
org.jruby.embed.EvalFailedException: (NameError) uninitialized constant
Arel::Relation::Session
at
org.jruby.embed.internal.EmbedEvalUnitImpl.run(EmbedEvalUnitImpl.java:127)
at org.jruby.embed.ScriptingContainer.runUnit(ScriptingContainer.java:1229)
at
org.jruby.embed.ScriptingContainer.runScriptlet(ScriptingContainer.java:1222)
at
org.apache.shindig.social.sample.spi.zooOpensocialService.createActivity(zooOpensocialService.java:223)
at
org.apache.shindig.social.opensocial.service.ActivityHandler.create(ActivityHandler.java:100)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
org.apache.shindig.protocol.DefaultHandlerRegistry$MethodCaller.call(DefaultHandlerRegistry.java:483)
at
org.apache.shindig.protocol.DefaultHandlerRegistry$RpcInvocationHandler.execute(DefaultHandlerRegistry.java:302)
at
org.apache.shindig.protocol.DefaultHandlerRegistry$RpcInvocationWrapper.execute(DefaultHandlerRegistry.java:326)
at
org.apache.shindig.protocol.JsonRpcServlet.dispatchBatch(JsonRpcServlet.java:186)
at
org.apache.shindig.protocol.JsonRpcServlet.service(JsonRpcServlet.java:131)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at
org.apache.shindig.gadgets.servlet.ETagFilter.doFilter(ETagFilter.java:55)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:242)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at
org.apache.shindig.auth.AuthenticationServletFilter.callChain(AuthenticationServletFilter.java:130)
at
org.apache.shindig.auth.AuthenticationServletFilter.doFilter(AuthenticationServletFilter.java:90)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:242)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:203)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:108)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:558)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:379)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:242)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:259)
at
org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:281)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
Caused by: org.jruby.exceptions.RaiseException: (NameError) uninitialized
constant Arel::Relation::Session
The java code to run the function is (Again the bolded *** to indicate where
the exception occurs) :
public Future<Void> createActivity(UserId userId, GroupId groupId, String
appId, Set<String> fields, Activity activity, SecurityToken token) throws
ProtocolException {
container.put("userId", userId.getUserId(token));
container.put("appId", appId);
container.put("fields", fields);
container.put("activity", activity);
String script = new StringBuilder()
.append("a = userId.split('.')\n")
.append("attribs = {:owner_id=>a[1].to_i, :owner_type=>a[0],
:source_id=>appId.to_i, :title=>activity.getTitle, :body=>activity.getBody}\n")
.append("Activity.create(attribs)\n") //***
.toString();
container.runScriptlet(script);
return ImmediateFuture.newInstance(null);
}
and to initialize jruby and load the rails models I have:
private String basepath;
private ScriptingContainer container;
private List loadPaths;
/**
* The JSON<->Bean converter
*/
private BeanConverter converter;
@Inject
public zooOpensocialService(@Named("shindig.bean.converter.json")
BeanConverter converter) throws ScriptException{
//engine = new ScriptEngineManager().getEngineByName("jruby");
// System.setProperty("org.jruby.embed.class.path", "Zoo");
//engine.eval("puts $:.inspect");
//engine.eval("require 'Zoo/config/environment.rb'");
this.converter = converter;
/********************************************************************************************
* Note basepath is hacked to static location for now. Find a way to
use server context or load
* from configuration file for easier deployment.
*/
basepath = "/usr/local/tomcat/webapps/ROOT/WEB-INF";
container = new ScriptingContainer(LocalContextScope.CONCURRENT,
LocalVariableBehavior.TRANSIENT);
container.setClassLoader(container.getClass().getClassLoader());
container.put("load_path", basepath + "/lib/Zoo");
container.put("gem_path", basepath + "/lib/jruby/1.8");
container.put("gemfile", basepath + "/lib/Zoo/Gemfile");
String script =
"$LOAD_PATH << load_path; ENV['GEM_HOME'] = gem_path;
ENV['BUNDLE_GEMFILE'] = gemfile\n" +
"require 'config/environment'\n" +
"ActionController::Routing::Routes.finalize!";
container.runScriptlet(script);
}
