| 1 | // License: GPL. For details, see LICENSE file. |
| 2 | package org.openstreetmap.josm.io; |
| 3 | |
| 4 | import static org.junit.Assert.assertNotNull; |
| 5 | |
| 6 | import java.io.ByteArrayInputStream; |
| 7 | import java.io.File; |
| 8 | import java.io.FileInputStream; |
| 9 | import java.io.IOException; |
| 10 | import java.io.InputStream; |
| 11 | |
| 12 | import org.junit.BeforeClass; |
| 13 | import org.junit.Test; |
| 14 | import org.openstreetmap.josm.JOSMFixture; |
| 15 | import org.openstreetmap.josm.PerformanceTestUtils; |
| 16 | import org.openstreetmap.josm.PerformanceTestUtils.PerformanceTestTimer; |
| 17 | import org.openstreetmap.josm.data.osm.DataSet; |
| 18 | |
| 19 | import sun.misc.IOUtils; |
| 20 | |
| 21 | /** |
| 22 | * This test tests how fast we are at reading an OSM file. |
| 23 | * <p> |
| 24 | * For this, we use the neubrandenburg-file, which is a good real world example of an OSM file. We ignore disk access times. |
| 25 | * |
| 26 | * @author Michael Zangl |
| 27 | */ |
| 28 | public class OsmReaderPerformanceTest { |
| 29 | private static final int TIMES = 4; |
| 30 | private static String DATA_FILE = "data_nodist/neubrandenburg.osm.bz2"; |
| 31 | |
| 32 | @BeforeClass |
| 33 | public static void createJOSMFixture() { |
| 34 | JOSMFixture.createPerformanceTestFixture().init(true); |
| 35 | } |
| 36 | |
| 37 | /** |
| 38 | * Simulates a plain read of a .osm.bz2 file (from memory) |
| 39 | * @throws IllegalDataException |
| 40 | * @throws IOException |
| 41 | */ |
| 42 | @Test |
| 43 | public void testCompressed() throws IllegalDataException, IOException { |
| 44 | runTest("compressed (.osm.bz2)", false); |
| 45 | } |
| 46 | |
| 47 | /** |
| 48 | * Simulates a plain read of a .osm file (from memory) |
| 49 | * @throws IllegalDataException |
| 50 | * @throws IOException |
| 51 | */ |
| 52 | @Test |
| 53 | public void test() throws IllegalDataException, IOException { |
| 54 | runTest(".osm-file", true); |
| 55 | } |
| 56 | |
| 57 | private void runTest(String what, boolean decompressBeforeRead) throws IllegalDataException, IOException { |
| 58 | InputStream is = loadFile(decompressBeforeRead); |
| 59 | PerformanceTestTimer timer = PerformanceTestUtils.startTimer("load " + what + " " + TIMES + " times"); |
| 60 | DataSet ds = null; |
| 61 | for (int i = 0; i < TIMES; i++) { |
| 62 | is.reset(); |
| 63 | |
| 64 | ds = OsmReader.parseDataSet(decompressBeforeRead ? is : Compression.byExtension(DATA_FILE) |
| 65 | .getUncompressedInputStream(is), null); |
| 66 | } |
| 67 | timer.done(); |
| 68 | assertNotNull(ds); |
| 69 | } |
| 70 | |
| 71 | private InputStream loadFile(boolean decompressBeforeRead) throws IOException { |
| 72 | File file = new File(DATA_FILE); |
| 73 | InputStream is; |
| 74 | if (decompressBeforeRead) { |
| 75 | is = Compression.getUncompressedFileInputStream(file); |
| 76 | } else { |
| 77 | is = new FileInputStream(file); |
| 78 | } |
| 79 | |
| 80 | byte[] data = IOUtils.readFully(is, -1, false); |
| 81 | is.close(); |
| 82 | ByteArrayInputStream memoryIs = new ByteArrayInputStream(data); |
| 83 | |
| 84 | return memoryIs; |
| 85 | } |
| 86 | |
| 87 | } |