Examples with BSONCallback org.bson.BSONCallback used on opensource projects

Example 1 with BSONCallback

use of org.bson.BSONCallback in project mongo-hadoop by mongodb.

the class BSONWritable method readFields.

/**
     * {@inheritDoc}
     *
     * @see Writable#readFields(DataInput)
     */
public void readFields(final DataInput in) throws IOException {
    BSONDecoder dec = new BasicBSONDecoder();
    BSONCallback cb = new BasicBSONCallback();
    // Read the BSON length from the start of the record
    byte[] l = new byte[4];
    try {
        in.readFully(l);
        int dataLen = Bits.readInt(l);
        if (LOG.isDebugEnabled()) {
            LOG.debug("*** Expected DataLen: " + dataLen);
        }
        byte[] data = new byte[dataLen + 4];
        System.arraycopy(l, 0, data, 0, 4);
        in.readFully(data, 4, dataLen - 4);
        dec.decode(data, cb);
        doc = (BSONObject) cb.get();
        if (LOG.isTraceEnabled()) {
            LOG.trace("Decoded a BSON Object: " + doc);
        }
    } catch (Exception e) {
        /* If we can't read another length it's not an error, just return quietly. */
        // TODO - Figure out how to gracefully mark this as an empty
        LOG.info("No Length Header available." + e);
        doc = new BasicDBObject();
    }
}

Example 2 with BSONCallback

use of org.bson.BSONCallback in project camel by apache.

the class MongoDbBasicConverters method fromInputStreamToDBObject.

@Converter
public static BasicDBObject fromInputStreamToDBObject(InputStream is, Exchange exchange) {
    BasicDBObject answer = null;
    try {
        byte[] input = IOConverter.toBytes(is);
        if (isBson(input)) {
            BSONCallback callback = new JSONCallback();
            new BasicBSONDecoder().decode(input, callback);
            answer = (BasicDBObject) callback.get();
        } else {
            answer = (BasicDBObject) JSON.parse(IOConverter.toString(input, exchange));
        }
    } catch (Exception e) {
        LOG.warn("String -> DBObject conversion selected, but the following exception occurred. Returning null.", e);
    } finally {
        // we need to make sure to close the input stream
        IOHelper.close(is, "InputStream", LOG);
    }
    return answer;
}

Example 3 with BSONCallback

use of org.bson.BSONCallback in project mongo-hadoop by mongodb.

the class BSONSplitterTest method testReadSplitsForFile.

@Test
public void testReadSplitsForFile() throws IOException {
    Configuration readSplitsConfig = new Configuration(conf);
    SPLITTER.setConf(readSplitsConfig);
    // Only one split if reading splits is disabled.
    MongoConfigUtil.setBSONReadSplits(readSplitsConfig, false);
    SPLITTER.readSplitsForFile(file);
    List<BSONFileSplit> splitsList = SPLITTER.getAllSplits();
    assertEquals(1, splitsList.size());
    BSONFileSplit theSplit = splitsList.get(0);
    assertOneSplit(theSplit);
    // Actually compute splits.
    MongoConfigUtil.setBSONReadSplits(readSplitsConfig, true);
    // Set split size to be really small so we get a lot of them.
    readSplitsConfig.set("mapreduce.input.fileinputformat.split.maxsize", "5000");
    SPLITTER.readSplitsForFile(file);
    splitsList = SPLITTER.getAllSplits();
    // Value found through manual inspection.
    assertEquals(40, splitsList.size());
    // Make sure that all splits start on document boundaries.
    FSDataInputStream stream = fs.open(file.getPath());
    BSONDecoder decoder = new BasicBSONDecoder();
    BSONCallback callback = new BasicBSONCallback();
    for (BSONFileSplit split : splitsList) {
        stream.seek(split.getStart());
        decoder.decode(stream, callback);
        BSONObject doc = (BSONObject) callback.get();
        assertTrue(doc.containsField("_id"));
    }
}

Example 4 with BSONCallback

use of org.bson.BSONCallback in project mongo-hadoop by mongodb.

the class MongoInputSplit method readFields.

@Override
public void readFields(final DataInput in) throws IOException {
    BSONCallback cb = new BasicBSONCallback();
    BSONObject spec;
    byte[] l = new byte[4];
    in.readFully(l);
    int dataLen = org.bson.io.Bits.readInt(l);
    byte[] data = new byte[dataLen + 4];
    System.arraycopy(l, 0, data, 0, 4);
    in.readFully(data, 4, dataLen - 4);
    _bsonDecoder.decode(data, cb);
    spec = (BSONObject) cb.get();
    setInputURI(new MongoClientURI((String) spec.get("inputURI")));
    if (spec.get("authURI") != null) {
        setAuthURI(new MongoClientURI((String) spec.get("authURI")));
    } else {
        setAuthURI((MongoClientURI) null);
    }
    setKeyField((String) spec.get("keyField"));
    BSONObject temp = (BSONObject) spec.get("fields");
    setFields(temp != null ? new BasicDBObject(temp.toMap()) : null);
    temp = (BSONObject) spec.get("query");
    setQuery(temp != null ? new BasicDBObject(temp.toMap()) : null);
    temp = (BSONObject) spec.get("sort");
    setSort(temp != null ? new BasicDBObject(temp.toMap()) : null);
    temp = (BSONObject) spec.get("min");
    setMin(temp != null ? new BasicDBObject(temp.toMap()) : null);
    temp = (BSONObject) spec.get("max");
    setMax(temp != null ? new BasicDBObject(temp.toMap()) : null);
    setLimit((Integer) spec.get("limit"));
    setSkip((Integer) spec.get("skip"));
    setNoTimeout((Boolean) spec.get("notimeout"));
}

Example 5 with BSONCallback

use of org.bson.BSONCallback in project mongo-hadoop by mongodb.

the class MongoUpdateWritable method readFields.

/**
     * {@inheritDoc}
     *
     * @see Writable#readFields(DataInput)
     */
public void readFields(final DataInput in) throws IOException {
    BSONDecoder dec = new BasicBSONDecoder();
    BSONCallback cb = new BasicBSONCallback();
    // Read the BSON length from the start of the record
    byte[] l = new byte[4];
    try {
        in.readFully(l);
        int dataLen = Bits.readInt(l);
        byte[] data = new byte[dataLen + 4];
        System.arraycopy(l, 0, data, 0, 4);
        in.readFully(data, 4, dataLen - 4);
        dec.decode(data, cb);
        query = (BasicBSONObject) cb.get();
        in.readFully(l);
        dataLen = Bits.readInt(l);
        data = new byte[dataLen + 4];
        System.arraycopy(l, 0, data, 0, 4);
        in.readFully(data, 4, dataLen - 4);
        dec.decode(data, cb);
        modifiers = (BasicBSONObject) cb.get();
        upsert = in.readBoolean();
        multiUpdate = in.readBoolean();
        replace = in.readBoolean();
    } catch (Exception e) {
        /* If we can't read another length it's not an error, just return quietly. */
        // TODO - Figure out how to gracefully mark this as an empty
        LOG.info("No Length Header available." + e);
        query = new BasicDBObject();
        modifiers = new BasicDBObject();
    }
}