Examples of freenet.support.api.LockableRandomAccessBuffer

freenet.support.api.LockableRandomAccessBuffer
A RandomAccessBuffer which allows you to lock it open for a brief period to indicate that you are using it and it would be a bad idea to close the pooled fd. Locking the RAF open does not provide any concurrency guarantees but the implementation must guarantee to do the right thing, either using a mutex or supporting concurrent writes. Also has methods for persisting itself to a DataOutputStream. Implementations must register with BucketTools.restoreRAFFrom(). @author toad

    }
    
    public void testPersistentSmallSplitfileWithLastBlockCompletionAfterResume() throws IOException, InsertException, StorageFormatException, ChecksumFailedException, ResumeFailedException {
        Random r = new Random(12121);
        long size = 65535; // Exact multiple, so no last block
        LockableRandomAccessBuffer data = generateData(r, size, bigRAFFactory);
        HashResult[] hashes = getHashes(data);
        MyCallback cb = new MyCallback();
        KeysFetchingLocally keys = new MyKeysFetchingLocally();
        SplitFileInserterStorage storage = new SplitFileInserterStorage(data, size, cb, null,
                new ClientMetadata(), false, null, smallRAFFactory, true, baseContext.clone(),

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    }
    
    public void testPersistentSmallSplitfileNoLastBlockFailAfterResume() throws IOException, InsertException, StorageFormatException, ChecksumFailedException, ResumeFailedException {
        Random r = new Random(12121);
        long size = 65536; // Exact multiple, so no last block
        LockableRandomAccessBuffer data = generateData(r, size, bigRAFFactory);
        HashResult[] hashes = getHashes(data);
        MyCallback cb = new MyCallback();
        KeysFetchingLocally keys = new MyKeysFetchingLocally();
        InsertContext context = baseContext.clone();
        context.consecutiveRNFsCountAsSuccess = 0;

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    }


    public void testPersistentSmallSplitfileNoLastBlockChooseAfterResume() throws IOException, InsertException, StorageFormatException, ChecksumFailedException, ResumeFailedException {
        Random r = new Random(12121);
        long size = 65536; // Exact multiple, so no last block
        LockableRandomAccessBuffer data = generateData(r, size, bigRAFFactory);
        HashResult[] hashes = getHashes(data);
        MyCallback cb = new MyCallback();
        MyKeysFetchingLocally keys = new MyKeysFetchingLocally();
        InsertContext context = baseContext.clone();
        context.consecutiveRNFsCountAsSuccess = 0;

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    @Override
    public LockableRandomAccessBuffer toRandomAccessBuffer() throws IOException {
        if(underlying.size() < type.headerLen)
            throw new IOException("Converting empty bucket");
        underlying.setReadOnly();
        LockableRandomAccessBuffer r = underlying.toRandomAccessBuffer();
        try {
            return new EncryptedRandomAccessBuffer(type, r, masterKey, false);
        } catch (GeneralSecurityException e) {
            Logger.error(this, "Unable to convert encrypted bucket: "+e, e);
            throw new IOException(e);

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        public SplitFileFetcherStorage createStorage(final StorageCallback cb, FetchContext ctx) throws FetchException, MetadataParseException, IOException {
            LockableRandomAccessBufferFactory f = new LockableRandomAccessBufferFactory() {


                @Override
                public LockableRandomAccessBuffer makeRAF(long size) throws IOException {
                    LockableRandomAccessBuffer t = rafFactory.makeRAF(size);
                    cb.snoopRAF(t);
                    return t;
                }


                @Override
                public LockableRandomAccessBuffer makeRAF(byte[] initialContents, int offset,
                        int size, boolean readOnly) throws IOException {
                    LockableRandomAccessBuffer t = rafFactory.makeRAF(initialContents, offset, size, readOnly);
                    cb.snoopRAF(t);
                    return t;
                }
                
            };

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        synchronized(this) {
            if(outputStreamOpen) throw new IOException("Must close first");
            readOnly = true;
        }
        underlying.setReadOnly();
        LockableRandomAccessBuffer u = underlying.toRandomAccessBuffer();
        return new PaddedRandomAccessBuffer(u, size);
    }

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    @Override
    public LockableRandomAccessBuffer makeRAF(long size) throws IOException {
        long id = fg.makeRandomFilename();
        File file = fg.getFilename(id);
        LockableRandomAccessBuffer ret = null;
        try {
            ret = new PooledFileRandomAccessBuffer(file, false, size, enableCrypto ? seedRandom : null, id, true);
            return ret;
        } finally {
            if(ret == null) file.delete();

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    @Override
    public LockableRandomAccessBuffer makeRAF(byte[] initialContents, int offset, int size, boolean readOnly)
            throws IOException {
        long id = fg.makeRandomFilename();
        File file = fg.getFilename(id);
        LockableRandomAccessBuffer ret = null;
        try {
            ret = new PooledFileRandomAccessBuffer(file, "rw", initialContents, offset, size, id, true, readOnly);
            return ret;
        } finally {
            if(ret == null) file.delete();

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        return hashStream.getResults();
    }


    private LockableRandomAccessBuffer generateData(Random random, long size,
            LockableRandomAccessBufferFactory smallRAFFactory) throws IOException {
        LockableRandomAccessBuffer thing = smallRAFFactory.makeRAF(size);
        BucketTools.fill(thing, random, 0, size);
        return new ReadOnlyRandomAccessBuffer(thing);
    }

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    }
    
    public void testSmallSplitfileChooseCompletion() throws IOException, InsertException, MissingKeyException {
        Random r = new Random(12121);
        long size = 65536; // Exact multiple, so no last block
        LockableRandomAccessBuffer data = generateData(r, size, smallRAFFactory);
        HashResult[] hashes = getHashes(data);
        NullSendableInsert insert = new NullSendableInsert(false, false);
        MyCallback cb = new MyCallback(insert);
        InsertContext context = baseContext.clone();
        context.maxInsertRetries = 2;

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freenet.client.async.ClientRequestSelectorTest

freenet.client.async.SingleFileInserter

freenet.client.async.SplitFileFetcherStorageTest$TestSplitfile

freenet.client.async.SplitFileInserterStorage

freenet.client.async.SplitFileInserterStorageTest

freenet.crypt.EncryptedRandomAccessBucket

freenet.crypt.EncryptedRandomAccessBucketTest

freenet.crypt.EncryptedRandomAccessBuffer

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freenet.support.io.MaybeEncryptedRandomAccessBufferFactory

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