For performance tuning we wanted use appstats and since ours is a java based application, we used the steps as mentioned
As soon as we hit http://localhost:8080/appstats We get the following error java.lang.NullPointerException at java.io.Reader.<init>(Reader.java:61) at java.io.InputStreamReader.<init>(InputStreamReader.java:80) at com.google.appengine.tools.appstats.TemplateTool.loadTemplateSource(TemplateTool.java: 115) at com.google.appengine.tools.appstats.Renderer $1.loadTemplateSource(Renderer.java:49) at com.google.appengine.tools.appstats.TemplateTool.getTemplate(TemplateTool.java: 142) at com.google.appengine.tools.appstats.TemplateTool.format(TemplateTool.java: 100) at com.google.appengine.tools.appstats.Renderer $1.format(Renderer.java:59) at com.google.appengine.tools.appstats.Renderer.renderSummaries(Renderer.java: 74) at com.google.appengine.tools.appstats.AppstatsServlet.doGet(AppstatsServlet.java: 140) at javax.servlet.http.HttpServlet.service(HttpServlet.java:693) If you notice, this is not a ClassNotFoundException, so AppstatsServlet is found and it encounters an issue somewhere. After spending a good couple of hours we included the labs jar as a part of the the application lib. (Notice the commented out scope) <dependency> <groupId>com.google.appengine</groupId> <artifactId>appengine-api-labs</artifactId> <version>${gae.version}</version> <!-- <scope>test</scope> --> </dependency> After this change the appstats started working. Looking at the labs jar, it also has the TaskQueue classes. Is Appstats also an experimental feature like TaskQueue? When we uploaded our application to the App Engine platform, we got the ClassNotFoundException for com.google.appengine.tools.appstats.AppstatsFilter, which shows that the class needs to be bundled with the application. On the local environment, with 1.3.5, 1.3.6 and 1.3.7 we get the NPE as mentioned above. What is the right strategy? Do we need to bundle the labs with the jars with the project? Why doesn't the local environment fail with CNFE? -- You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
