public void setUp() {
epService =
EPServiceProviderManager.getDefaultProvider(SupportConfigFactory.getConfiguration());
epService.initialize();
epService
.getEPAdministrator()
.getConfiguration()
.addImport(DefaultSupportCaptureOp.class.getName());
MyExceptionHandler.getContexts().clear();
}
public void testExceptionHandler() throws Exception {
epService.getEPAdministrator().getConfiguration().addEventType(SupportBean.class);
// test exception by graph source
EPStatement stmtGraph =
epService
.getEPAdministrator()
.createEPL(
"create dataflow MyDataFlow DefaultSupportSourceOp -> outstream<SupportBean> {}");
DefaultSupportSourceOp op =
new DefaultSupportSourceOp(new Object[] {new RuntimeException("My-Exception-Is-Here")});
EPDataFlowInstantiationOptions options = new EPDataFlowInstantiationOptions();
options.operatorProvider(new DefaultSupportGraphOpProvider(op));
MyExceptionHandler handler = new MyExceptionHandler();
options.exceptionHandler(handler);
EPDataFlowInstance df =
epService.getEPRuntime().getDataFlowRuntime().instantiate("MyDataFlow", options);
df.start();
Thread.sleep(100);
assertEquals(EPDataFlowState.COMPLETE, df.getState());
assertEquals(1, MyExceptionHandler.getContexts().size());
EPDataFlowExceptionContext context = MyExceptionHandler.getContexts().get(0);
assertEquals("MyDataFlow", context.getDataFlowName());
assertEquals("DefaultSupportSourceOp", context.getOperatorName());
assertEquals(0, context.getOperatorNumber());
assertEquals(
"DefaultSupportSourceOp#0() -> outstream<SupportBean>", context.getOperatorPrettyPrint());
assertEquals(
"Support-graph-source generated exception: My-Exception-Is-Here",
context.getThrowable().getMessage());
df.cancel();
stmtGraph.destroy();
MyExceptionHandler.getContexts().clear();
// test exception by operator
epService.getEPAdministrator().getConfiguration().addImport(MyExceptionOp.class);
epService
.getEPAdministrator()
.createEPL(
"create dataflow MyDataFlow DefaultSupportSourceOp -> outstream<SupportBean> {}"
+ "MyExceptionOp(outstream) {}");
DefaultSupportSourceOp opTwo =
new DefaultSupportSourceOp(new Object[] {new SupportBean("E1", 1)});
EPDataFlowInstantiationOptions optionsTwo = new EPDataFlowInstantiationOptions();
optionsTwo.operatorProvider(new DefaultSupportGraphOpProvider(opTwo));
MyExceptionHandler handlerTwo = new MyExceptionHandler();
optionsTwo.exceptionHandler(handlerTwo);
EPDataFlowInstance dfTwo =
epService.getEPRuntime().getDataFlowRuntime().instantiate("MyDataFlow", optionsTwo);
dfTwo.start();
Thread.sleep(100);
assertEquals(1, MyExceptionHandler.getContexts().size());
EPDataFlowExceptionContext contextTwo = MyExceptionHandler.getContexts().get(0);
assertEquals("MyDataFlow", contextTwo.getDataFlowName());
assertEquals("MyExceptionOp", contextTwo.getOperatorName());
assertEquals(1, contextTwo.getOperatorNumber());
assertEquals("MyExceptionOp#1(outstream)", contextTwo.getOperatorPrettyPrint());
assertEquals("Operator-thrown-exception", contextTwo.getThrowable().getMessage());
}