org.apache.calcite.avatica.remote.AvaticaCommonsHttpClientImplTest.java Source code

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Here is the source code for org.apache.calcite.avatica.remote.AvaticaCommonsHttpClientImplTest.java

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to you 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.
 */
package org.apache.calcite.avatica.remote;

import org.apache.http.NoHttpResponseException;
import org.apache.http.StatusLine;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.protocol.HttpClientContext;
import org.apache.http.entity.StringEntity;

import org.junit.Test;
import org.mockito.invocation.InvocationOnMock;
import org.mockito.stubbing.Answer;

import java.net.HttpURLConnection;

import static org.junit.Assert.assertEquals;
import static org.mockito.Mockito.any;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;

import static java.nio.charset.StandardCharsets.UTF_8;

/**
 * Test class for {@link AvaticaCommonsHttpClientImpl}
 */
public class AvaticaCommonsHttpClientImplTest {

    @Test
    public void testRetryOnHttp503() throws Exception {
        final byte[] requestBytes = "fake_request".getBytes(UTF_8);
        final CloseableHttpResponse badResponse = mock(CloseableHttpResponse.class);
        final CloseableHttpResponse goodResponse = mock(CloseableHttpResponse.class);
        final StatusLine badStatusLine = mock(StatusLine.class);
        final StatusLine goodStatusLine = mock(StatusLine.class);
        final StringEntity responseEntity = new StringEntity("success");
        final Answer<CloseableHttpResponse> failThenSucceed = new Answer<CloseableHttpResponse>() {
            private int iteration = 0;

            @Override
            public CloseableHttpResponse answer(InvocationOnMock invocation) throws Throwable {
                iteration++;
                if (1 == iteration) {
                    return badResponse;
                } else {
                    return goodResponse;
                }
            }
        };

        final AvaticaCommonsHttpClientImpl client = mock(AvaticaCommonsHttpClientImpl.class);

        when(client.send(any(byte[].class))).thenCallRealMethod();
        when(client.execute(any(HttpPost.class), any(HttpClientContext.class))).then(failThenSucceed);

        when(badResponse.getStatusLine()).thenReturn(badStatusLine);
        when(badStatusLine.getStatusCode()).thenReturn(HttpURLConnection.HTTP_UNAVAILABLE);

        when(goodResponse.getStatusLine()).thenReturn(goodStatusLine);
        when(goodStatusLine.getStatusCode()).thenReturn(HttpURLConnection.HTTP_OK);
        when(goodResponse.getEntity()).thenReturn(responseEntity);

        byte[] responseBytes = client.send(requestBytes);
        assertEquals("success", new String(responseBytes, UTF_8));
    }

    @Test
    public void testRetryOnMissingHttpResponse() throws Exception {
        final byte[] requestBytes = "fake_request".getBytes(UTF_8);
        final CloseableHttpResponse badResponse = mock(CloseableHttpResponse.class);
        final CloseableHttpResponse goodResponse = mock(CloseableHttpResponse.class);
        final StatusLine badStatusLine = mock(StatusLine.class);
        final StatusLine goodStatusLine = mock(StatusLine.class);
        final StringEntity responseEntity = new StringEntity("success");
        final Answer<CloseableHttpResponse> failThenSucceed = new Answer<CloseableHttpResponse>() {
            private int iteration = 0;

            @Override
            public CloseableHttpResponse answer(InvocationOnMock invocation) throws Throwable {
                iteration++;
                if (1 == iteration) {
                    throw new NoHttpResponseException("The server didn't respond!");
                } else {
                    return goodResponse;
                }
            }
        };

        final AvaticaCommonsHttpClientImpl client = mock(AvaticaCommonsHttpClientImpl.class);

        when(client.send(any(byte[].class))).thenCallRealMethod();
        when(client.execute(any(HttpPost.class), any(HttpClientContext.class))).then(failThenSucceed);

        when(badResponse.getStatusLine()).thenReturn(badStatusLine);
        when(badStatusLine.getStatusCode()).thenReturn(HttpURLConnection.HTTP_UNAVAILABLE);

        when(goodResponse.getStatusLine()).thenReturn(goodStatusLine);
        when(goodStatusLine.getStatusCode()).thenReturn(HttpURLConnection.HTTP_OK);
        when(goodResponse.getEntity()).thenReturn(responseEntity);

        byte[] responseBytes = client.send(requestBytes);
        assertEquals("success", new String(responseBytes, UTF_8));
    }
}

// End AvaticaCommonsHttpClientImplTest.java