Examples with RefreshHandler org.apache.hadoop.ipc.RefreshHandler used on opensource projects

Example 1 with RefreshHandler

use of org.apache.hadoop.ipc.RefreshHandler in project hadoop by apache.

the class TestGenericRefresh method testExceptionResultsInNormalError.

@Test
public void testExceptionResultsInNormalError() throws Exception {
    // In this test, we ensure that all handlers are called even if we throw an exception in one
    RefreshHandler exceptionalHandler = Mockito.mock(RefreshHandler.class);
    Mockito.stub(exceptionalHandler.handleRefresh(Mockito.anyString(), Mockito.any(String[].class))).toThrow(new RuntimeException("Exceptional Handler Throws Exception"));
    RefreshHandler otherExceptionalHandler = Mockito.mock(RefreshHandler.class);
    Mockito.stub(otherExceptionalHandler.handleRefresh(Mockito.anyString(), Mockito.any(String[].class))).toThrow(new RuntimeException("More Exceptions"));
    RefreshRegistry.defaultRegistry().register("exceptional", exceptionalHandler);
    RefreshRegistry.defaultRegistry().register("exceptional", otherExceptionalHandler);
    DFSAdmin admin = new DFSAdmin(config);
    String[] args = new String[] { "-refresh", "localhost:" + cluster.getNameNodePort(), "exceptional" };
    int exitCode = admin.run(args);
    // Exceptions result in a -1
    assertEquals(-1, exitCode);
    Mockito.verify(exceptionalHandler).handleRefresh("exceptional", new String[] {});
    Mockito.verify(otherExceptionalHandler).handleRefresh("exceptional", new String[] {});
    RefreshRegistry.defaultRegistry().unregisterAll("exceptional");
}

Example 2 with RefreshHandler

use of org.apache.hadoop.ipc.RefreshHandler in project hadoop by apache.

the class TestGenericRefresh method testUnregistrationReturnValue.

@Test
public void testUnregistrationReturnValue() {
    RefreshHandler mockHandler = Mockito.mock(RefreshHandler.class);
    RefreshRegistry.defaultRegistry().register("test", mockHandler);
    boolean ret = RefreshRegistry.defaultRegistry().unregister("test", mockHandler);
    assertTrue(ret);
}

Example 3 with RefreshHandler

use of org.apache.hadoop.ipc.RefreshHandler in project hadoop by apache.

the class TestGenericRefresh method testMultipleReturnCodeMerging.

@Test
public void testMultipleReturnCodeMerging() throws Exception {
    // Two handlers which return two non-zero values
    RefreshHandler handlerOne = Mockito.mock(RefreshHandler.class);
    Mockito.stub(handlerOne.handleRefresh(Mockito.anyString(), Mockito.any(String[].class))).toReturn(new RefreshResponse(23, "Twenty Three"));
    RefreshHandler handlerTwo = Mockito.mock(RefreshHandler.class);
    Mockito.stub(handlerTwo.handleRefresh(Mockito.anyString(), Mockito.any(String[].class))).toReturn(new RefreshResponse(10, "Ten"));
    // Then registered to the same ID
    RefreshRegistry.defaultRegistry().register("shared", handlerOne);
    RefreshRegistry.defaultRegistry().register("shared", handlerTwo);
    // We refresh both
    DFSAdmin admin = new DFSAdmin(config);
    String[] args = new String[] { "-refresh", "localhost:" + cluster.getNameNodePort(), "shared" };
    int exitCode = admin.run(args);
    // We get -1 because of our logic for melding non-zero return codes
    assertEquals(-1, exitCode);
    // Verify we called both
    Mockito.verify(handlerOne).handleRefresh("shared", new String[] {});
    Mockito.verify(handlerTwo).handleRefresh("shared", new String[] {});
    RefreshRegistry.defaultRegistry().unregisterAll("shared");
}