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/*******************************************************************************
* ============LICENSE_START==================================================
* * org.onap.dmaap
* * ===========================================================================
* * Copyright © 2017 AT&T Intellectual Property. All rights reserved.
* * ===========================================================================
* * Licensed under the Apache License, Version 2.0 (the "License");
* * you may not use this file except in compliance with the License.
* * You may obtain a copy of the License at
* *
* * http://www.apache.org/licenses/LICENSE-2.0
* *
* * Unless required by applicable law or agreed to in writing, software
* * distributed under the License is distributed on an "AS IS" BASIS,
* * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* * See the License for the specific language governing permissions and
* * limitations under the License.
* * ============LICENSE_END====================================================
* *
* * ECOMP is a trademark and service mark of AT&T Intellectual Property.
* *
******************************************************************************/
package org.onap.dmaap.datarouter.provisioning.utils;
import org.apache.commons.lang3.reflect.FieldUtils;
import org.eclipse.jetty.continuation.Continuation;
import org.eclipse.jetty.continuation.ContinuationSupport;
import org.eclipse.jetty.io.EndPoint;
import org.eclipse.jetty.server.HttpChannel;
import org.eclipse.jetty.server.HttpConnection;
import org.eclipse.jetty.server.Request;
import org.junit.Test;
import org.junit.runner.RunWith;
import static org.junit.Assert.*;
import static org.hamcrest.core.Is.is;
import org.mockito.Mock;
import static org.mockito.Matchers.*;
import static org.mockito.Mockito.*;
import org.onap.dmaap.datarouter.provisioning.beans.Parameters;
import org.powermock.api.mockito.PowerMockito;
import org.powermock.core.classloader.annotations.SuppressStaticInitializationFor;
import org.powermock.modules.junit4.PowerMockRunner;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletInputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.*;
@RunWith(PowerMockRunner.class)
@SuppressStaticInitializationFor({"org.onap.dmaap.datarouter.provisioning.beans.Parameters",
"org.eclipse.jetty.server.Request",
"org.eclipse.jetty.continuation.ContinuationSupport",
"org.eclipse.jetty.server.HttpConnection"})
public class ThrottleFilterTest {
@Mock
private HttpServletRequest request;
@Mock
private HttpServletResponse response;
@Mock
private FilterChain filterchain;
@Mock
private HttpConnection httpconnection;
@Mock
private ContinuationSupport continuationsupport;
@Mock
private Request req;
@Mock
private HttpChannel httpchannel;
@Mock
private Continuation continuation;
@Test
public void Given_Throttle_Filter_Configure_And_Parameter_Is_Not_Null_Then_Enabled_And_Action_Is_True() throws Exception {
mockParametersWithValues("2,5,throttle");
ThrottleFilter.configure();
boolean enabled = (boolean) FieldUtils.readStaticField(ThrottleFilter.class, "enabled", true);
int action = (int) FieldUtils.readStaticField(ThrottleFilter.class, "action", true);
assertThat(enabled, is(true));
assertThat(action, is(0));
}
@Test
public void Given_Do_Filter_run_and_enabled_and_action_is_true_and_rate_is_0_then_continiuation_will_call_setAttribute_and_resume_once() throws Exception {
mockParametersWithValues("100,5,thing");
ThrottleFilter throttlefilter = new ThrottleFilter();
ThrottleFilter.configure();
mockServletInputStream();
FieldUtils.writeDeclaredStaticField(ThrottleFilter.class, "action", 1, true);
Map<String, List<Continuation>> suspended_requests = new HashMap<String, List<Continuation>>();
List<Continuation> continuation_list = new ArrayList<>();
continuation_list.add(continuation);
suspended_requests.put("null/-1", continuation_list);
FieldUtils.writeDeclaredField(throttlefilter, "suspended_requests", suspended_requests, true);
throttlefilter.doFilter(request, response, filterchain);
verify(continuation, times(1)).setAttribute(anyString(), any());
verify(continuation, times(1)).resume();
}
@Test
public void Given_Do_Filter_Run_and_enabled_and_action_is_true_and_rate_is_greater_than_0_then_continuation_will_call_suspend_and_dispatch_once() throws Exception {
mockParametersWithValues("0,5,thing");
mockContinuationSupport();
ThrottleFilter.configure();
mockServletInputStream();
FieldUtils.writeDeclaredStaticField(ThrottleFilter.class, "action", 1, true);
ThrottleFilter throttlefilter = new ThrottleFilter();
throttlefilter.doFilter(request, response, filterchain);
verify(continuation, times(1)).undispatch();
verify(continuation, times(1)).suspend();
}
@Test
public void Given_Do_Filter_Run_and_enabled_and_action_is_true_and_rate_is_greater_than_0_and_getFeedId_returns_id_then_continuation_will_call_suspend_and_dispatch_once() throws Exception {
mockParametersWithValues("0,5,thing");
PowerMockito.mockStatic(ContinuationSupport.class);
PowerMockito.when(continuationsupport.getContinuation(any())).thenReturn(continuation);
ThrottleFilter.configure();
mockServletInputStream();
FieldUtils.writeDeclaredStaticField(ThrottleFilter.class, "action", 1, true);
ThrottleFilter throttlefilter = new ThrottleFilter();
when(request.getPathInfo()).thenReturn("/123/fileName.txt");
throttlefilter.doFilter(request, response, filterchain);
verify(continuation, times(1)).undispatch();
verify(continuation, times(1)).suspend();
}
@Test
public void Given_Do_Filter_and_only_enabled_is_true_and_drop_filter_ran_then_request_will_call_getHttpChannel_and_HttpChannel_will_call_getEndPoint_once() throws Exception {
mockParametersWithValues("0,5,thing");
ServletInputStream serverinputstream = mock(ServletInputStream.class);
mockHttpConnectionHttpChannelAndRequest(serverinputstream);
ThrottleFilter.configure();
FieldUtils.writeDeclaredStaticField(ThrottleFilter.class, "action", 0, true);
ThrottleFilter throttlefilter = new ThrottleFilter();
throttlefilter.doFilter(request, response, filterchain);
verify(req, times(1)).getHttpChannel();
verify(httpchannel, times(1)).getEndPoint();
}
@Test
public void Given_run_is_called_then_continuation_will_call_prune_once() throws Exception {
ThrottleFilter tf = new ThrottleFilter();
Map<String, ThrottleFilter.Counter> map = new HashMap<String, ThrottleFilter.Counter>();
ThrottleFilter.Counter tfc = mock(ThrottleFilter.Counter.class);
map.put("Key", tfc);
when(tfc.prune()).thenReturn(-1);
FieldUtils.writeDeclaredField(tf, "map", map, true);
tf.run();
verify(tfc, times(1)).prune();
}
@Test
public void Given_destroy_is_called_then_map_is_empty() throws Exception
{
ThrottleFilter throttleFilter = new ThrottleFilter();
FilterConfig filterconfig = mock(FilterConfig.class);
mockParametersWithValues("0,5,thing");
PowerMockito.mockStatic(ContinuationSupport.class);
PowerMockito.when(continuationsupport.getContinuation(any())).thenReturn(continuation);
throttleFilter.init(filterconfig);
throttleFilter.destroy();
}
private Parameters getParameters() {
PowerMockito.mockStatic(Parameters.class);
return mock(Parameters.class);
}
private void mockServletInputStream() throws IOException {
ServletInputStream serverinputstream = mock(ServletInputStream.class);
when(serverinputstream.read(any())).thenReturn(2).thenReturn(1).thenReturn(0);
when(request.getInputStream()).thenReturn(serverinputstream);
}
private void mockParametersWithValues(String values) {
Parameters parameters = getParameters();
PowerMockito.when(parameters.getParameter(anyString())).thenReturn(new Parameters("key", values));
}
private void mockContinuationSupport() {
PowerMockito.mockStatic(ContinuationSupport.class);
PowerMockito.when(continuationsupport.getContinuation(any())).thenReturn(continuation);
}
private void mockHttpConnectionHttpChannelAndRequest(ServletInputStream serverinputstream) throws IOException {
PowerMockito.mockStatic(ContinuationSupport.class);
PowerMockito.when(continuationsupport.getContinuation(any())).thenReturn(continuation);
when(serverinputstream.read(any())).thenReturn(2).thenReturn(1).thenReturn(0);
when(request.getInputStream()).thenReturn(serverinputstream);
PowerMockito.mockStatic(HttpConnection.class);
EndPoint endpoint = mock(EndPoint.class);
PowerMockito.when(httpconnection.getCurrentConnection()).thenReturn(httpconnection);
PowerMockito.when(httpconnection.getHttpChannel()).thenReturn(httpchannel);
when(httpchannel.getRequest()).thenReturn(req);
when(req.getHttpChannel()).thenReturn(httpchannel);
when(httpchannel.getEndPoint()).thenReturn(endpoint);
}
}
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