Ah ... okay. I kind of wondered about that. I'll try that. Thanks. Take care,
Susan > On Sep 28, 2016, at 8:49 AM, Dale LaBossiere <[email protected]> wrote: > > Off the top of my head… > > Seems possible (likely?) that no tuples arrived between enabling the > StreamScope and calling getSamples(). > Samples aren’t captured until the StreamScope is enabled and ultimately the > servlet will have to periodically call getSamples(). > > Note, StreamScope.java has doc that may help clarify things beyond what’s in > StreamScopeMXBean doc. > > Yup, DevelopmentProvider injects StreamScope oplets alongside of the injected > Metric oplets. Both are presented as little grey boxes in a stream and you > can hover on them. > > — Dale > >> On Sep 27, 2016, at 4:50 PM, Susan Cline <[email protected]> wrote: >> >> ... >> Here is the simple code in the servlet: >> >> StreamScopeMXBean sScopeBean = >> StreamScopeUtil.getStreamScope(jobId, opletId, Integer.parseInt(outputPort)); >> if (sScopeBean != null) { >> sScopeBean.setEnabled(true); >> System.out.println("is streamScopeMXBean enabled? " + >> sScopeBean.isEnabled()); >> >> String sampleScope = sScopeBean.getSamples(); >> System.out.println("sampleScope: " + sampleScope); >> Gson gson = new Gson(); >> response.setContentType("application/json"); >> response.setCharacterEncoding("UTF-8"); >> response.getWriter().write(gson.toJson(sampleScope)); >> } >> >> The output to the command line is: >> >> is streamScopeMXBean enabled? true >> sampleScope: [] >
