src/test/java/org/apache/flume/http/source/TestBLOBHandler.java

/*
 * 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.flume.http.source;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.apache.flume.Context;
import org.apache.flume.Event;
import org.junit.Before;
import org.junit.Test;

import jakarta.servlet.ReadListener;
import jakarta.servlet.ServletInputStream;
import jakarta.servlet.http.HttpServletRequest;
import static org.junit.Assert.assertEquals;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;

/**
 *
 */
public class TestBLOBHandler {

    HTTPSourceHandler handler;

    @Before
    public void setUp() {
        handler = new BLOBHandler();
    }

    @SuppressWarnings({"unchecked", "rawtypes"})
    @Test
    public void testCSVData() throws Exception {
        Map requestParameterMap = new HashMap();
        requestParameterMap.put("param1", new String[] {"value1"});
        requestParameterMap.put("param2", new String[] {"value2"});

        HttpServletRequest req = mock(HttpServletRequest.class);
        final String csvData = "a,b,c";

        ServletInputStream servletInputStream =
                new DelegatingServletInputStream(new ByteArrayInputStream(csvData.getBytes()));

        when(req.getInputStream()).thenReturn(servletInputStream);
        when(req.getParameterMap()).thenReturn(requestParameterMap);

        Context context = mock(Context.class);
        when(context.getString(BLOBHandler.MANDATORY_PARAMETERS, BLOBHandler.DEFAULT_MANDATORY_PARAMETERS))
                .thenReturn("param1,param2");

        handler.configure(context);
        List<Event> deserialized = handler.getEvents(req);
        assertEquals(1, deserialized.size());
        Event e = deserialized.get(0);

        assertEquals(new String(e.getBody()), csvData);
        assertEquals(e.getHeaders().get("param1"), "value1");
        assertEquals(e.getHeaders().get("param2"), "value2");
    }

    @SuppressWarnings({"unchecked", "rawtypes"})
    @Test
    public void testTabData() throws Exception {
        Map requestParameterMap = new HashMap();
        requestParameterMap.put("param1", new String[] {"value1"});

        HttpServletRequest req = mock(HttpServletRequest.class);
        final String tabData = "a\tb\tc";

        ServletInputStream servletInputStream =
                new DelegatingServletInputStream(new ByteArrayInputStream(tabData.getBytes()));

        when(req.getInputStream()).thenReturn(servletInputStream);
        when(req.getParameterMap()).thenReturn(requestParameterMap);

        Context context = mock(Context.class);
        when(context.getString(BLOBHandler.MANDATORY_PARAMETERS, BLOBHandler.DEFAULT_MANDATORY_PARAMETERS))
                .thenReturn("param1");

        handler.configure(context);

        List<Event> deserialized = handler.getEvents(req);
        assertEquals(1, deserialized.size());
        Event e = deserialized.get(0);

        assertEquals(new String(e.getBody()), tabData);
        assertEquals(e.getHeaders().get("param1"), "value1");
    }

    @SuppressWarnings({"rawtypes"})
    @Test(expected = IllegalArgumentException.class)
    public void testMissingParameters() throws Exception {
        Map requestParameterMap = new HashMap();

        HttpServletRequest req = mock(HttpServletRequest.class);
        final String tabData = "a\tb\tc";

        ServletInputStream servletInputStream =
                new DelegatingServletInputStream(new ByteArrayInputStream(tabData.getBytes()));

        when(req.getInputStream()).thenReturn(servletInputStream);
        when(req.getParameterMap()).thenReturn(requestParameterMap);

        Context context = mock(Context.class);
        when(context.getString(BLOBHandler.MANDATORY_PARAMETERS, BLOBHandler.DEFAULT_MANDATORY_PARAMETERS))
                .thenReturn("param1");

        handler.configure(context);

        handler.getEvents(req);
    }

    class DelegatingServletInputStream extends ServletInputStream {

        private final InputStream sourceStream;

        /**
         * Create a DelegatingServletInputStream for the given source stream.
         *
         * @param sourceStream
         *          the source stream (never <code>null</code>)
         */
        public DelegatingServletInputStream(InputStream sourceStream) {
            this.sourceStream = sourceStream;
        }

        /**
         * Return the underlying source stream (never <code>null</code>).
         */
        public final InputStream getSourceStream() {
            return this.sourceStream;
        }

        public int read() throws IOException {
            return this.sourceStream.read();
        }

        public void close() throws IOException {
            super.close();
            this.sourceStream.close();
        }

        public boolean isFinished() {
            throw new UnsupportedOperationException("Not supported yet.");
        }

        public boolean isReady() {
            throw new UnsupportedOperationException("Not supported yet.");
        }

        public void setReadListener(ReadListener arg0) {
            throw new UnsupportedOperationException("Not supported yet.");
        }
    }
}