To reproduce:

1. Create two build configurations called "A" and "B".
2. Create a new promotion in "A" that promotes into "B". Set condition to "If specified script evaluates to true", and use this script:

groovy:

def foo = "a"
def bar = "${foo}"

return true


Run "A". The Overview page for "A" reports the error message:

Failed to evaluate below expression:
mvel:foo

Clicking on the build for "A" reports the error message:

Message: Failed to evaluate below expression:
mvel:foo

Root cause:

[Error: could not access: foo; in class: null]
[Near : {... Unknown ....}]
^
[Line: 1, Column: 0]
at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.getBeanProperty(ReflectiveAccessorOptimizer.java:611)
at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(ReflectiveAccessorOptimizer.java:323)
at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.optimizeAccessor(ReflectiveAccessorOptimizer.java:135)
at org.mvel2.optimizers.dynamic.DynamicOptimizer.optimizeAccessor(DynamicOptimizer.java:66)
at org.mvel2.ast.ASTNode.getReducedValueAccelerated(ASTNode.java:139)
at org.mvel2.compiler.ExecutableAccessor.getValue(ExecutableAccessor.java:42)
at org.mvel2.MVEL.executeExpression(MVEL.java:1057)
at com.pmease.quickbuild.plugin.basis.BasisPlugin$26.evaluate(BasisPlugin.java:280)
at com.pmease.quickbuild.DefaultScriptEngine.evaluate(DefaultScriptEngine.java:88)
at com.pmease.quickbuild.DefaultScriptEngine.interpolate(DefaultScriptEngine.java:105)
at com.pmease.quickbuild.setting.configuration.promotion.ScriptPromoteCondition.satisfied(ScriptPromoteCondition.java:38)
at com.pmease.quickbuild.web.page.build.BuildPage.addPromotionButtons(BuildPage.java:822)
at com.pmease.quickbuild.web.page.build.BuildPage.onInitialize(BuildPage.java:453)
at org.apache.wicket.Component.fireInitialize(Component.java:924)
at org.apache.wicket.MarkupContainer.internalInitialize(MarkupContainer.java:1002)
at org.apache.wicket.Page.internalPrepareForRender(Page.java:278)
at org.apache.wicket.Component.render(Component.java:2280)
at org.apache.wicket.Page.renderPage(Page.java:1035)
at org.apache.wicket.request.handler.render.WebPageRenderer.renderPage(WebPageRenderer.java:105)
at org.apache.wicket.request.handler.render.WebPageRenderer.respond(WebPageRenderer.java:182)
at org.apache.wicket.request.handler.RenderPageRequestHandler.respond(RenderPageRequestHandler.java:147)
at org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:719)
at org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:63)
at org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:210)
at org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:253)
at org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:162)
at org.apache.wicket.protocol.http.WicketServlet.doGet(WicketServlet.java:137)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:734)
at com.pmease.quickbuild.web.MainServlet.service(MainServlet.java:124)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
at org.eclipse.equinox.http.helper.FilterServletAdaptor$FilterChainImpl.doFilter(FilterServletAdaptor.java:56)
at org.eclipse.jetty.servlets.UserAgentFilter.doFilter(UserAgentFilter.java:82)
at org.eclipse.jetty.servlets.GzipFilter.doFilter(GzipFilter.java:243)
at org.eclipse.equinox.http.helper.FilterServletAdaptor.service(FilterServletAdaptor.java:37)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:669)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1336)
at com.pmease.quickbuild.Quickbuild$DisableTraceFilter.doFilter(Quickbuild.java:1048)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1307)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:453)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:229)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1072)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:382)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1006)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:154)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
at org.eclipse.jetty.server.Server.handle(Server.java:365)
at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:485)
at org.eclipse.jetty.server.BlockingHttpConnection.handleRequest(BlockingHttpConnection.java:53)
at org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:926)
at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:988)
at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:635)
at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235)
at org.eclipse.jetty.server.BlockingHttpConnection.handle(BlockingHttpConnection.java:72)
at org.eclipse.jetty.server.bio.SocketConnector$ConnectorEndPoint.run(SocketConnector.java:264)
at org.eclipse.jetty.server.ssl.SslSocketConnector$SslConnectorEndPoint.run(SslSocketConnector.java:670)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)
at java.lang.Thread.run(Thread.java:701)


Complete stack:

com.pmease.quickbuild.QuickbuildException: Failed to evaluate below expression:
mvel:foo
at com.pmease.quickbuild.util.ExceptionUtils.wrapException(ExceptionUtils.java:89)
at com.pmease.quickbuild.DefaultScriptEngine.evaluate(DefaultScriptEngine.java:94)
at com.pmease.quickbuild.DefaultScriptEngine.interpolate(DefaultScriptEngine.java:105)
at com.pmease.quickbuild.setting.configuration.promotion.ScriptPromoteCondition.satisfied(ScriptPromoteCondition.java:38)
at com.pmease.quickbuild.web.page.build.BuildPage.addPromotionButtons(BuildPage.java:822)
at com.pmease.quickbuild.web.page.build.BuildPage.onInitialize(BuildPage.java:453)
at org.apache.wicket.Component.fireInitialize(Component.java:924)
at org.apache.wicket.MarkupContainer.internalInitialize(MarkupContainer.java:1002)
at org.apache.wicket.Page.internalPrepareForRender(Page.java:278)
at org.apache.wicket.Component.render(Component.java:2280)
at org.apache.wicket.Page.renderPage(Page.java:1035)
at org.apache.wicket.request.handler.render.WebPageRenderer.renderPage(WebPageRenderer.java:105)
at org.apache.wicket.request.handler.render.WebPageRenderer.respond(WebPageRenderer.java:182)
at org.apache.wicket.request.handler.RenderPageRequestHandler.respond(RenderPageRequestHandler.java:147)
at org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:719)
at org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:63)
at org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:210)
at org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:253)
at org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:162)


It seems like the script is incorrectly being evaluated as an MVEL string before being used.

A workaround is to avoid use of string interpolation in the groovy script. For example, replacing "${foo}" with foo + "" fixes the issue.