Examples with FileReader java.io.FileReader used on opensource projects

Example 1 with FileReader

use of java.io.FileReader in project camel by apache.

the class FileDataSet method readSourceFile.

// Implementation methods
//-------------------------------------------------------------------------
private void readSourceFile() throws IOException {
    List<Object> bodies = new LinkedList<>();
    try (BufferedReader br = new BufferedReader(new FileReader(sourceFile))) {
        Scanner scanner = new Scanner(br);
        scanner.useDelimiter(delimiter);
        while (scanner.hasNext()) {
            String nextPayload = scanner.next();
            if ((nextPayload != null) && (nextPayload.length() > 0)) {
                bodies.add(nextPayload);
            }
        }
        setDefaultBodies(bodies);
    }
}

Example 2 with FileReader

use of java.io.FileReader in project flink by apache.

the class MassiveStringSorting method testStringSorting.

public void testStringSorting() {
    File input = null;
    File sorted = null;
    try {
        // the source file
        input = generateFileWithStrings(300000, "http://some-uri.com/that/is/a/common/prefix/to/all");
        // the sorted file
        sorted = File.createTempFile("sorted_strings", "txt");
        String[] command = { "/bin/bash", "-c", "export LC_ALL=\"C\" && cat \"" + input.getAbsolutePath() + "\" | sort > \"" + sorted.getAbsolutePath() + "\"" };
        Process p = null;
        try {
            p = Runtime.getRuntime().exec(command);
            int retCode = p.waitFor();
            if (retCode != 0) {
                throw new Exception("Command failed with return code " + retCode);
            }
            p = null;
        } finally {
            if (p != null) {
                p.destroy();
            }
        }
        // sort the data
        UnilateralSortMerger<String> sorter = null;
        BufferedReader reader = null;
        BufferedReader verifyReader = null;
        try {
            MemoryManager mm = new MemoryManager(1024 * 1024, 1);
            IOManager ioMan = new IOManagerAsync();
            TypeSerializer<String> serializer = StringSerializer.INSTANCE;
            TypeComparator<String> comparator = new StringComparator(true);
            reader = new BufferedReader(new FileReader(input));
            MutableObjectIterator<String> inputIterator = new StringReaderMutableObjectIterator(reader);
            sorter = new UnilateralSortMerger<String>(mm, ioMan, inputIterator, new DummyInvokable(), new RuntimeSerializerFactory<String>(serializer, String.class), comparator, 1.0, 4, 0.8f, true, /* use large record handler */
            false);
            MutableObjectIterator<String> sortedData = sorter.getIterator();
            reader.close();
            // verify
            verifyReader = new BufferedReader(new FileReader(sorted));
            String next;
            while ((next = verifyReader.readLine()) != null) {
                String nextFromStratoSort = sortedData.next("");
                Assert.assertNotNull(nextFromStratoSort);
                Assert.assertEquals(next, nextFromStratoSort);
            }
        } finally {
            if (reader != null) {
                reader.close();
            }
            if (verifyReader != null) {
                verifyReader.close();
            }
            if (sorter != null) {
                sorter.close();
            }
        }
    } catch (Exception e) {
        System.err.println(e.getMessage());
        e.printStackTrace();
        Assert.fail(e.getMessage());
    } finally {
        if (input != null) {
            input.delete();
        }
        if (sorted != null) {
            sorted.delete();
        }
    }
}

Example 3 with FileReader

use of java.io.FileReader in project flink by apache.

the class MassiveStringSorting method testStringTuplesSorting.

@SuppressWarnings("unchecked")
public void testStringTuplesSorting() {
    final int NUM_STRINGS = 300000;
    File input = null;
    File sorted = null;
    try {
        // the source file
        input = generateFileWithStringTuples(NUM_STRINGS, "http://some-uri.com/that/is/a/common/prefix/to/all");
        // the sorted file
        sorted = File.createTempFile("sorted_strings", "txt");
        String[] command = { "/bin/bash", "-c", "export LC_ALL=\"C\" && cat \"" + input.getAbsolutePath() + "\" | sort > \"" + sorted.getAbsolutePath() + "\"" };
        Process p = null;
        try {
            p = Runtime.getRuntime().exec(command);
            int retCode = p.waitFor();
            if (retCode != 0) {
                throw new Exception("Command failed with return code " + retCode);
            }
            p = null;
        } finally {
            if (p != null) {
                p.destroy();
            }
        }
        // sort the data
        UnilateralSortMerger<Tuple2<String, String[]>> sorter = null;
        BufferedReader reader = null;
        BufferedReader verifyReader = null;
        try {
            MemoryManager mm = new MemoryManager(1024 * 1024, 1);
            IOManager ioMan = new IOManagerAsync();
            TupleTypeInfo<Tuple2<String, String[]>> typeInfo = (TupleTypeInfo<Tuple2<String, String[]>>) TypeInfoParser.<Tuple2<String, String[]>>parse("Tuple2<String, String[]>");
            TypeSerializer<Tuple2<String, String[]>> serializer = typeInfo.createSerializer(new ExecutionConfig());
            TypeComparator<Tuple2<String, String[]>> comparator = typeInfo.createComparator(new int[] { 0 }, new boolean[] { true }, 0, new ExecutionConfig());
            reader = new BufferedReader(new FileReader(input));
            MutableObjectIterator<Tuple2<String, String[]>> inputIterator = new StringTupleReaderMutableObjectIterator(reader);
            sorter = new UnilateralSortMerger<Tuple2<String, String[]>>(mm, ioMan, inputIterator, new DummyInvokable(), new RuntimeSerializerFactory<Tuple2<String, String[]>>(serializer, (Class<Tuple2<String, String[]>>) (Class<?>) Tuple2.class), comparator, 1.0, 4, 0.8f, true, /* use large record handler */
            false);
            // use this part to verify that all if good when sorting in memory
            //				List<MemorySegment> memory = mm.allocatePages(new DummyInvokable(), mm.computeNumberOfPages(1024*1024*1024));
            //				NormalizedKeySorter<Tuple2<String, String[]>> nks = new NormalizedKeySorter<Tuple2<String,String[]>>(serializer, comparator, memory);
            //
            //				{
            //					Tuple2<String, String[]> wi = new Tuple2<String, String[]>("", new String[0]);
            //					while ((wi = inputIterator.next(wi)) != null) {
            //						Assert.assertTrue(nks.write(wi));
            //					}
            //					
            //					new QuickSort().sort(nks);
            //				}
            //				
            //				MutableObjectIterator<Tuple2<String, String[]>> sortedData = nks.getIterator();
            MutableObjectIterator<Tuple2<String, String[]>> sortedData = sorter.getIterator();
            reader.close();
            // verify
            verifyReader = new BufferedReader(new FileReader(sorted));
            MutableObjectIterator<Tuple2<String, String[]>> verifyIterator = new StringTupleReaderMutableObjectIterator(verifyReader);
            Tuple2<String, String[]> next = new Tuple2<String, String[]>("", new String[0]);
            Tuple2<String, String[]> nextFromStratoSort = new Tuple2<String, String[]>("", new String[0]);
            int num = 0;
            while ((next = verifyIterator.next(next)) != null) {
                num++;
                nextFromStratoSort = sortedData.next(nextFromStratoSort);
                Assert.assertNotNull(nextFromStratoSort);
                Assert.assertEquals(next.f0, nextFromStratoSort.f0);
                Assert.assertArrayEquals(next.f1, nextFromStratoSort.f1);
            }
            Assert.assertNull(sortedData.next(nextFromStratoSort));
            Assert.assertEquals(NUM_STRINGS, num);
        } finally {
            if (reader != null) {
                reader.close();
            }
            if (verifyReader != null) {
                verifyReader.close();
            }
            if (sorter != null) {
                sorter.close();
            }
        }
    } catch (Exception e) {
        System.err.println(e.getMessage());
        e.printStackTrace();
        Assert.fail(e.getMessage());
    } finally {
        if (input != null) {
            input.delete();
        }
        if (sorted != null) {
            sorted.delete();
        }
    }
}

Example 4 with FileReader

use of java.io.FileReader in project flink by apache.

the class MassiveStringValueSorting method testStringValueTuplesSorting.

@SuppressWarnings("unchecked")
public void testStringValueTuplesSorting() {
    final int NUM_STRINGS = 300000;
    File input = null;
    File sorted = null;
    try {
        // the source file
        input = generateFileWithStringTuples(NUM_STRINGS, "http://some-uri.com/that/is/a/common/prefix/to/all");
        // the sorted file
        sorted = File.createTempFile("sorted_strings", "txt");
        String[] command = { "/bin/bash", "-c", "export LC_ALL=\"C\" && cat \"" + input.getAbsolutePath() + "\" | sort > \"" + sorted.getAbsolutePath() + "\"" };
        Process p = null;
        try {
            p = Runtime.getRuntime().exec(command);
            int retCode = p.waitFor();
            if (retCode != 0) {
                throw new Exception("Command failed with return code " + retCode);
            }
            p = null;
        } finally {
            if (p != null) {
                p.destroy();
            }
        }
        // sort the data
        UnilateralSortMerger<Tuple2<StringValue, StringValue[]>> sorter = null;
        BufferedReader reader = null;
        BufferedReader verifyReader = null;
        try {
            MemoryManager mm = new MemoryManager(1024 * 1024, 1);
            IOManager ioMan = new IOManagerAsync();
            TupleTypeInfo<Tuple2<StringValue, StringValue[]>> typeInfo = (TupleTypeInfo<Tuple2<StringValue, StringValue[]>>) TypeInfoParser.<Tuple2<StringValue, StringValue[]>>parse("Tuple2<org.apache.flink.types.StringValue, org.apache.flink.types.StringValue[]>");
            TypeSerializer<Tuple2<StringValue, StringValue[]>> serializer = typeInfo.createSerializer(new ExecutionConfig());
            TypeComparator<Tuple2<StringValue, StringValue[]>> comparator = typeInfo.createComparator(new int[] { 0 }, new boolean[] { true }, 0, new ExecutionConfig());
            reader = new BufferedReader(new FileReader(input));
            MutableObjectIterator<Tuple2<StringValue, StringValue[]>> inputIterator = new StringValueTupleReaderMutableObjectIterator(reader);
            sorter = new UnilateralSortMerger<Tuple2<StringValue, StringValue[]>>(mm, ioMan, inputIterator, new DummyInvokable(), new RuntimeSerializerFactory<Tuple2<StringValue, StringValue[]>>(serializer, (Class<Tuple2<StringValue, StringValue[]>>) (Class<?>) Tuple2.class), comparator, 1.0, 4, 0.8f, true, /* use large record handler */
            false);
            // use this part to verify that all if good when sorting in memory
            //				List<MemorySegment> memory = mm.allocatePages(new DummyInvokable(), mm.computeNumberOfPages(1024*1024*1024));
            //				NormalizedKeySorter<Tuple2<String, String[]>> nks = new NormalizedKeySorter<Tuple2<String,String[]>>(serializer, comparator, memory);
            //
            //				{
            //					Tuple2<String, String[]> wi = new Tuple2<String, String[]>("", new String[0]);
            //					while ((wi = inputIterator.next(wi)) != null) {
            //						Assert.assertTrue(nks.write(wi));
            //					}
            //					
            //					new QuickSort().sort(nks);
            //				}
            //				
            //				MutableObjectIterator<Tuple2<String, String[]>> sortedData = nks.getIterator();
            MutableObjectIterator<Tuple2<StringValue, StringValue[]>> sortedData = sorter.getIterator();
            reader.close();
            // verify
            verifyReader = new BufferedReader(new FileReader(sorted));
            MutableObjectIterator<Tuple2<StringValue, StringValue[]>> verifyIterator = new StringValueTupleReaderMutableObjectIterator(verifyReader);
            Tuple2<StringValue, StringValue[]> nextVerify = new Tuple2<StringValue, StringValue[]>(new StringValue(), new StringValue[0]);
            Tuple2<StringValue, StringValue[]> nextFromFlinkSort = new Tuple2<StringValue, StringValue[]>(new StringValue(), new StringValue[0]);
            int num = 0;
            while ((nextVerify = verifyIterator.next(nextVerify)) != null) {
                num++;
                nextFromFlinkSort = sortedData.next(nextFromFlinkSort);
                Assert.assertNotNull(nextFromFlinkSort);
                Assert.assertEquals(nextVerify.f0, nextFromFlinkSort.f0);
                Assert.assertArrayEquals(nextVerify.f1, nextFromFlinkSort.f1);
            }
            Assert.assertNull(sortedData.next(nextFromFlinkSort));
            Assert.assertEquals(NUM_STRINGS, num);
        } finally {
            if (reader != null) {
                reader.close();
            }
            if (verifyReader != null) {
                verifyReader.close();
            }
            if (sorter != null) {
                sorter.close();
            }
        }
    } catch (Exception e) {
        System.err.println(e.getMessage());
        e.printStackTrace();
        Assert.fail(e.getMessage());
    } finally {
        if (input != null) {
            //noinspection ResultOfMethodCallIgnored
            input.delete();
        }
        if (sorted != null) {
            //noinspection ResultOfMethodCallIgnored
            sorted.delete();
        }
    }
}

Example 5 with FileReader

use of java.io.FileReader in project flink by apache.

the class DataSinkTaskTest method testDataSinkTask.

@Test
public void testDataSinkTask() {
    FileReader fr = null;
    BufferedReader br = null;
    try {
        int keyCnt = 100;
        int valCnt = 20;
        super.initEnvironment(MEMORY_MANAGER_SIZE, NETWORK_BUFFER_SIZE);
        super.addInput(new UniformRecordGenerator(keyCnt, valCnt, false), 0);
        DataSinkTask<Record> testTask = new DataSinkTask<>();
        super.registerFileOutputTask(testTask, MockOutputFormat.class, new File(tempTestPath).toURI().toString());
        testTask.invoke();
        File tempTestFile = new File(this.tempTestPath);
        Assert.assertTrue("Temp output file does not exist", tempTestFile.exists());
        fr = new FileReader(tempTestFile);
        br = new BufferedReader(fr);
        HashMap<Integer, HashSet<Integer>> keyValueCountMap = new HashMap<>(keyCnt);
        while (br.ready()) {
            String line = br.readLine();
            Integer key = Integer.parseInt(line.substring(0, line.indexOf("_")));
            Integer val = Integer.parseInt(line.substring(line.indexOf("_") + 1, line.length()));
            if (!keyValueCountMap.containsKey(key)) {
                keyValueCountMap.put(key, new HashSet<Integer>());
            }
            keyValueCountMap.get(key).add(val);
        }
        Assert.assertTrue("Invalid key count in out file. Expected: " + keyCnt + " Actual: " + keyValueCountMap.keySet().size(), keyValueCountMap.keySet().size() == keyCnt);
        for (Integer key : keyValueCountMap.keySet()) {
            Assert.assertTrue("Invalid value count for key: " + key + ". Expected: " + valCnt + " Actual: " + keyValueCountMap.get(key).size(), keyValueCountMap.get(key).size() == valCnt);
        }
    } catch (Exception e) {
        e.printStackTrace();
        Assert.fail(e.getMessage());
    } finally {
        if (br != null) {
            try {
                br.close();
            } catch (Throwable t) {
            }
        }
        if (fr != null) {
            try {
                fr.close();
            } catch (Throwable t) {
            }
        }
    }
}