BlobWriteTest.java

/*
 * Copyright 2014 Alexey Plotnik
 *
 * Licensed 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.stem;

import org.apache.commons.codec.digest.DigestUtils;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.stem.db.DataTracker;
import org.stem.db.FatFile;
import org.stem.db.FatFileAllocator;
import org.stem.utils.TestUtils;

public class BlobWriteTest {

    @Before
    public void setUp() throws Exception {
        TestUtils.cleanupTempDir();
        TestUtils.createTempDir();
    }

    @After
    public void tearDown() throws Exception {
        TestUtils.cleanupTempDir();
    }

    @Test
    public void testWriteSingleBlob() throws Exception {
        String path = TestUtils.temporize("stem-ff-000001.db");
        FatFileAllocator.allocateFile(path, 4);

        FatFile fatFile = FatFile.open(path, new DataTracker(10));
        fatFile.writeActiveMarker();

        while (fatFile.hasSpaceFor(65536)) {
            byte[] blob = createBlob(65536);
            String key = DigestUtils.md5Hex(blob);

            fatFile.writeBlob(key, blob);
        }
        fatFile.writeIndex();
        fatFile.writeFullMarker();
    }

    private byte[] createBlob(int size) {
        byte[] blob = new byte[size];
        for (int i = 0; i < size; i++) {
            blob[i] = 1;
        }
        return blob;
    }
}