Examples with NoSuchFileException java.nio.file.NoSuchFileException used on opensource projects

Example 26 with NoSuchFileException

use of java.nio.file.NoSuchFileException in project lucene-solr by apache.

the class MockDirectoryWrapper method maybeThrowIOExceptionOnOpen.

void maybeThrowIOExceptionOnOpen(String name) throws IOException {
    if (randomState.nextDouble() < randomIOExceptionRateOnOpen) {
        if (LuceneTestCase.VERBOSE) {
            System.out.println(Thread.currentThread().getName() + ": MockDirectoryWrapper: now throw random exception during open file=" + name);
            new Throwable().printStackTrace(System.out);
        }
        if (allowRandomFileNotFoundException == false || randomState.nextBoolean()) {
            throw new IOException("a random IOException (" + name + ")");
        } else {
            throw randomState.nextBoolean() ? new FileNotFoundException("a random IOException (" + name + ")") : new NoSuchFileException("a random IOException (" + name + ")");
        }
    }
}

Example 27 with NoSuchFileException

use of java.nio.file.NoSuchFileException in project lucene-solr by apache.

the class TestMockDirectoryWrapper method testCorruptOnCloseIsWorking.

private void testCorruptOnCloseIsWorking(Directory dir) throws Exception {
    dir = new PreventCloseDirectoryWrapper(dir);
    try (MockDirectoryWrapper wrapped = new MockDirectoryWrapper(random(), dir)) {
        // otherwise MDW sometimes randomly leaves the file intact and we'll see false test failures:
        wrapped.alwaysCorrupt = true;
        // MDW will only try to corrupt things if it sees an index:
        RandomIndexWriter iw = new RandomIndexWriter(random(), dir);
        iw.addDocument(new Document());
        iw.close();
        // not sync'd!
        try (IndexOutput out = wrapped.createOutput("foo", IOContext.DEFAULT)) {
            for (int i = 0; i < 100; i++) {
                out.writeInt(i);
            }
        }
    // MDW.close now corrupts our unsync'd file (foo):
    }
    boolean changed = false;
    IndexInput in = null;
    try {
        in = dir.openInput("foo", IOContext.DEFAULT);
    } catch (NoSuchFileException | FileNotFoundException fnfe) {
        // ok
        changed = true;
    }
    if (in != null) {
        for (int i = 0; i < 100; i++) {
            int x;
            try {
                x = in.readInt();
            } catch (EOFException eofe) {
                changed = true;
                break;
            }
            if (x != i) {
                changed = true;
                break;
            }
        }
        in.close();
    }
    assertTrue("MockDirectoryWrapper on dir=" + dir + " failed to corrupt an unsync'd file", changed);
}

Example 28 with NoSuchFileException

use of java.nio.file.NoSuchFileException in project lucene-solr by apache.

the class Node method readLocalFileMetaData.

/** Opens the specified file, reads its identifying information, including file length, full index header (includes the unique segment
   *  ID) and the full footer (includes checksum), and returns the resulting {@link FileMetaData}.
   *
   *  <p>This returns null, logging a message, if there are any problems (the file does not exist, is corrupt, truncated, etc.).</p> */
public FileMetaData readLocalFileMetaData(String fileName) throws IOException {
    Map<String, FileMetaData> cache = lastFileMetaData;
    FileMetaData result;
    if (cache != null) {
        // We may already have this file cached from the last NRT point:
        result = cache.get(fileName);
    } else {
        result = null;
    }
    if (result == null) {
        // Pull from the filesystem
        long checksum;
        long length;
        byte[] header;
        byte[] footer;
        try (IndexInput in = dir.openInput(fileName, IOContext.DEFAULT)) {
            try {
                length = in.length();
                header = CodecUtil.readIndexHeader(in);
                footer = CodecUtil.readFooter(in);
                checksum = CodecUtil.retrieveChecksum(in);
            } catch (EOFException | CorruptIndexException cie) {
                // to delete such unreferenced files, but virus checker can block that, leaving this bad file.
                if (VERBOSE_FILES) {
                    message("file " + fileName + ": will copy [existing file is corrupt]");
                }
                return null;
            }
            if (VERBOSE_FILES) {
                message("file " + fileName + " has length=" + bytesToString(length));
            }
        } catch (FileNotFoundException | NoSuchFileException e) {
            if (VERBOSE_FILES) {
                message("file " + fileName + ": will copy [file does not exist]");
            }
            return null;
        }
        // NOTE: checksum is redundant w/ footer, but we break it out separately because when the bits cross the wire we need direct access to
        // checksum when copying to catch bit flips:
        result = new FileMetaData(header, footer, length, checksum);
    }
    return result;
}

Example 29 with NoSuchFileException

use of java.nio.file.NoSuchFileException in project lucene-solr by apache.

the class FileSwitchDirectory method listAll.

@Override
public String[] listAll() throws IOException {
    Set<String> files = new HashSet<>();
    // LUCENE-3380: either or both of our dirs could be FSDirs,
    // but if one underlying delegate is an FSDir and mkdirs() has not
    // yet been called, because so far everything is written to the other,
    // in this case, we don't want to throw a NoSuchFileException
    NoSuchFileException exc = null;
    try {
        for (String f : primaryDir.listAll()) {
            files.add(f);
        }
    } catch (NoSuchFileException e) {
        exc = e;
    }
    try {
        for (String f : secondaryDir.listAll()) {
            files.add(f);
        }
    } catch (NoSuchFileException e) {
        // rethrow the first.
        if (exc != null) {
            throw exc;
        }
        // and the primary is empty.
        if (files.isEmpty()) {
            throw e;
        }
    }
    // and the secondary is empty.
    if (exc != null && files.isEmpty()) {
        throw exc;
    }
    String[] result = files.toArray(new String[files.size()]);
    Arrays.sort(result);
    return result;
}

Example 30 with NoSuchFileException

use of java.nio.file.NoSuchFileException in project lucene-solr by apache.

the class TestIndexWriter method testLeftoverTempFiles.

public void testLeftoverTempFiles() throws Exception {
    Directory dir = newDirectory();
    IndexWriterConfig iwc = new IndexWriterConfig(new MockAnalyzer(random()));
    IndexWriter w = new IndexWriter(dir, iwc);
    w.close();
    IndexOutput out = dir.createTempOutput("_0", "bkd", IOContext.DEFAULT);
    String tempName = out.getName();
    out.close();
    iwc = new IndexWriterConfig(new MockAnalyzer(random()));
    w = new IndexWriter(dir, iwc);
    // Make sure IW deleted the unref'd file:
    try {
        dir.openInput(tempName, IOContext.DEFAULT);
        fail("did not hit exception");
    } catch (FileNotFoundException | NoSuchFileException e) {
    // expected
    }
    w.close();
    dir.close();
}