Example usage for com.mongodb.gridfs GridFS GridFS

Introduction

In this page you can find the example usage for com.mongodb.gridfs GridFS GridFS.

Prototype

public GridFS(final DB db, final String bucket) 

Source Link

Document

Creates a GridFS instance for the specified bucket in the given database.

Usage

From source file:cn.vlabs.clb.server.storage.mongo.MongoStorageService.java

License:Apache License

protected void writeTrivialFile(InputStream ins, MTrivialFile mtf, String tableName) {
    DB db = options.getCollection(TABLE_TEMP_KEY).getDB();
    db.requestStart();//  w  ww  . j  a v  a 2s  . c  o  m
    GridFSInputFile gfsInput;
    DBCollection col = db.getCollection(tableName + ".files");
    col.setWriteConcern(WriteConcern.SAFE);
    gfsInput = new GridFS(db, tableName).createFile(ins);
    gfsInput.setFilename(mtf.getFileName());
    gfsInput.put(FIELD_STORAGE_KEY, mtf.getStorageKey());
    gfsInput.put(FIELD_SPACE_NAME, mtf.getSpaceName());
    gfsInput.setContentType(mtf.getContentType());
    gfsInput.save();
    db.requestDone();
}

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From source file:cn.vlabs.clb.server.storage.mongo.MongoStorageService.java

License:Apache License

@Override
public void removeTrivial(String spaceName) {
    DB db = options.getCollection(TABLE_TEMP_KEY).getDB();
    DBObject query = new BasicDBObject();
    query.put(FIELD_SPACE_NAME, new ObjectId(spaceName));
    GridFS gfs = new GridFS(db, TABLE_TRIVIAL);
    gfs.remove(query);/* w  w w . j  a va  2s.c o  m*/
}

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From source file:cn.vlabs.clb.server.storage.mongo.MongoStorageService.java

License:Apache License

private void deleteMetaAndContent(String storageKey, String tableName) {
    DB db = options.getCollection(TABLE_TEMP_KEY).getDB();
    DBObject query = new BasicDBObject();
    query.put(FIELD_STORAGE_KEY, new ObjectId(storageKey));
    GridFS gfs = new GridFS(db, tableName);
    gfs.remove(query);/*from  ww  w.  j  a  v a  2  s. c  o  m*/
}

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From source file:com.andreig.jetty.GridfsServlet.java

License:GNU General Public License

@SuppressWarnings("unused")
@Override//from  w ww.j  ava2s.c  o m
protected void doPost(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {

    log.fine("doPost()");

    if (!can_write(req)) {
        res.sendError(SC_UNAUTHORIZED);
        return;
    }

    InputStream tmp = req.getInputStream();
    InputStream is = new BufferedInputStream(tmp);
    String db_name = req.getParameter("dbname");
    String bucket_name = req.getParameter("bucketname");
    if (db_name == null || bucket_name == null) {
        String names[] = req2mongonames(req);
        if (names != null) {
            db_name = names[0];
            bucket_name = names[1];
        }
        if (db_name == null) {
            error(res, SC_BAD_REQUEST, Status.get("param name missing"));
            return;
        }
    }

    if (bucket_name == null)
        bucket_name = "fs";

    String file_name = req.getParameter("filename");

    if (file_name == null) {
        error(res, SC_BAD_REQUEST, Status.get("param name missing"));
        return;
    }

    DB db = mongo.getDB(db_name);

    String fs_cache_key = db_name + bucket_name;
    GridFS fs = fs_cache.get(fs_cache_key);
    if (fs == null) {
        fs = new GridFS(db, bucket_name);
        fs_cache.put(fs_cache_key, fs);
    }

    GridFSDBFile db_file_old = fs.findOne(file_name);
    if (db_file_old == null) {
        error(res, SC_NOT_FOUND, Status.get("file doe not exists, use PUT"));
        return;
    }

    String ct = req.getContentType();
    GridFSInputFile db_file = fs.createFile(file_name);
    if (ct != null)
        db_file.setContentType(ct);
    OutputStream os = db_file.getOutputStream();

    final int len = 4096;
    byte data[] = new byte[len];
    int n = 0, bytesno = 0;
    while ((n = is.read(data, 0, len)) > 0) {
        os.write(data, 0, n);
        bytesno += n;
    }
    os.close();

    if (is != null)
        is.close();

    out_json(req, Status.OK);

}

---

From source file:com.andreig.jetty.GridfsServlet.java

License:GNU General Public License

@Override
protected void doPut(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {

    log.fine("doPut()");

    if (!can_write(req)) {
        res.sendError(SC_UNAUTHORIZED);//from w  ww. j  a  v a 2s. c  o m
        return;
    }

    InputStream tmp = req.getInputStream();
    InputStream is = new BufferedInputStream(tmp);
    String db_name = req.getParameter("dbname");
    String bucket_name = req.getParameter("bucketname");
    if (db_name == null || bucket_name == null) {
        String names[] = req2mongonames(req);
        if (names != null) {
            db_name = names[0];
            bucket_name = names[1];
        }
        if (db_name == null) {
            error(res, SC_BAD_REQUEST, Status.get("param name missing"));
            return;
        }
    }

    if (bucket_name == null)
        bucket_name = "fs";

    String file_name = req.getParameter("filename");

    if (file_name == null) {
        error(res, SC_BAD_REQUEST, Status.get("param name missing"));
        return;
    }

    DB db = mongo.getDB(db_name);

    String fs_cache_key = db_name + bucket_name;
    GridFS fs = fs_cache.get(fs_cache_key);
    if (fs == null) {
        fs = new GridFS(db, bucket_name);
        fs_cache.put(fs_cache_key, fs);
    }

    GridFSDBFile db_file_old = fs.findOne(file_name);
    if (db_file_old != null) {
        error(res, SC_BAD_REQUEST, Status.get("file already exists, use POST"));
        return;
    }

    String ct = req.getContentType();
    GridFSInputFile db_file = fs.createFile(file_name);
    if (ct != null)
        db_file.setContentType(ct);
    OutputStream os = db_file.getOutputStream();

    final int len = 4096;
    byte data[] = new byte[len];
    @SuppressWarnings("unused")
    int n = 0, bytesno = 0;
    while ((n = is.read(data, 0, len)) > 0) {
        os.write(data, 0, n);
        bytesno += n;
    }
    os.flush();
    os.close();

    if (is != null)
        is.close();

    out_json(req, Status.OK);

}

---

From source file:com.andreig.jetty.GridfsServlet.java

License:GNU General Public License

@Override
protected void doDelete(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {

    log.fine("doDelete()");

    if (!can_write(req)) {
        res.sendError(SC_UNAUTHORIZED);/*ww  w .jav a 2 s. c  o  m*/
        return;
    }

    String db_name = req.getParameter("dbname");
    String bucket_name = req.getParameter("bucketname");
    if (db_name == null || bucket_name == null) {
        String names[] = req2mongonames(req);
        if (names != null) {
            db_name = names[0];
            bucket_name = names[1];
        }
        if (db_name == null) {
            error(res, SC_BAD_REQUEST, Status.get("param name missing"));
            return;
        }
    }

    if (bucket_name == null)
        bucket_name = "fs";

    DB db = mongo.getDB(db_name);

    String fs_cache_key = db_name + bucket_name;
    GridFS fs = fs_cache.get(fs_cache_key);
    if (fs == null) {
        fs = new GridFS(db, bucket_name);
        fs_cache.put(fs_cache_key, fs);
    }

    // mongo auth
    String user = req.getParameter("user");
    String passwd = req.getParameter("passwd");
    if (user != null && passwd != null && (!db.isAuthenticated())) {
        boolean auth = db.authenticate(user, passwd.toCharArray());
        if (!auth) {
            res.sendError(SC_UNAUTHORIZED);
            return;
        }
    }

    String file_name = req.getParameter("filename");

    if (file_name == null) {
        error(res, SC_BAD_REQUEST, Status.get("param name missing"));
        return;
    }

    fs.remove(file_name);

    out_json(req, Status.OK);

}

---

From source file:com.andreig.jetty.GridfsServlet.java

License:GNU General Public License

@Override
protected void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {

    log.fine("doGet()");

    if (!can_read(req)) {
        res.sendError(SC_UNAUTHORIZED);//from w ww  . ja v a2s. c o  m
        return;
    }

    String db_name = req.getParameter("dbname");
    String bucket_name = req.getParameter("bucketname");
    if (db_name == null || bucket_name == null) {
        String names[] = req2mongonames(req);
        if (names != null) {
            db_name = names[0];
            bucket_name = names[1];
        }
        if (db_name == null) {
            error(res, SC_BAD_REQUEST, Status.get("param name missing"));
            return;
        }
    }

    if (bucket_name == null)
        bucket_name = "fs";

    DB db = mongo.getDB(db_name);

    String fs_cache_key = db_name + bucket_name;
    GridFS fs = fs_cache.get(fs_cache_key);
    if (fs == null) {
        fs = new GridFS(db, bucket_name);
        fs_cache.put(fs_cache_key, fs);
    }

    // mongo auth
    String user = req.getParameter("user");
    String passwd = req.getParameter("passwd");
    if (user != null && passwd != null && (!db.isAuthenticated())) {
        boolean auth = db.authenticate(user, passwd.toCharArray());
        if (!auth) {
            res.sendError(SC_UNAUTHORIZED);
            return;
        }
    }

    String op = req.getParameter("op");
    if (op == null)
        op = "get";

    StringBuilder buf = tl.get();
    // reset buf
    buf.setLength(0);

    // list
    if ("get".equals(op)) {

        String file_name = req.getParameter("filename");
        if (file_name == null) {
            error(res, SC_BAD_REQUEST, Status.get("param name missing"));
            return;
        }

        GridFSDBFile db_file = fs.findOne(file_name);
        if (db_file == null) {
            error(res, SC_NOT_FOUND, Status.get("file does not exists"));
            return;
        }

        res.setContentLength((int) db_file.getLength());
        String ct = db_file.getContentType();
        if (ct != null)
            res.setContentType(ct);
        OutputStream os = res.getOutputStream();
        @SuppressWarnings("unused")
        long l;
        while ((l = db_file.writeTo(os)) > 0)
            ;
        os.flush();
        os.close();

    }
    // list
    else if ("list".equals(op)) {

        DBCursor c = fs.getFileList();
        if (c == null) {
            error(res, SC_NOT_FOUND, Status.get("no documents found"));
            return;
        }

        int no = 0;
        buf.append("[");
        while (c.hasNext()) {

            DBObject o = c.next();
            JSON.serialize(o, buf);
            buf.append(",");
            no++;

        }

        if (no > 0)
            buf.setCharAt(buf.length() - 1, ']');
        else
            buf.append(']');

        out_str(req, buf.toString(), "application/json");

    }
    // info
    else if ("info".equals(op)) {

        String file_name = req.getParameter("filename");
        if (file_name == null) {
            error(res, SC_BAD_REQUEST, Status.get("param name missing"));
            return;
        }

        GridFSDBFile db_file = fs.findOne(file_name);
        if (db_file == null) {
            error(res, SC_NOT_FOUND, Status.get("no documents found"));
            return;
        }

        buf.append("{");
        buf.append(String.format("\"ContentType\":%s,", db_file.getContentType()));
        buf.append(String.format("\"Length\":%d,", db_file.getLength()));
        buf.append(String.format("\"MD5\":%s", db_file.getMD5()));
        buf.append("}");

        out_str(req, buf.toString(), "application/json");

    } else
        res.sendError(SC_BAD_REQUEST);

}

---

From source file:com.bluedragon.mongo.gridfs.Add.java

License:Open Source License

protected GridFS getGridFS(cfSession _session, cfArgStructData argStruct, DB db) throws cfmRunTimeException {
    String bucket = getNamedStringParam(argStruct, "bucket", null);
    if (bucket == null)
        throwException(_session, "please specify a bucket");

    return new GridFS(db, bucket);
}

---

From source file:com.bugull.mongo.fs.BuguFS.java

License:Apache License

public BuguFS(String bucketName, long chunkSize) {
    this.bucketName = bucketName;
    this.chunkSize = chunkSize;
    DB db = null;/*from w w w .j  a  v  a2s. co  m*/
    try {
        db = BuguConnection.getInstance().getDB();
    } catch (DBConnectionException ex) {
        logger.error(ex.getMessage(), ex);
    }
    fs = new GridFS(db, bucketName);
    files = db.getCollection(bucketName + ".files");
    //ensure the DBCursor can be cast to GridFSDBFile
    files.setObjectClass(GridFSDBFile.class);
}

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From source file:com.card.loop.xyz.dao.LearningElementDAO.java

public boolean addFile(LearningElement le) throws UnknownHostException, IOException {
    File file = new File(AppConfig.USER_VARIABLE + le.getFilePath() + le.getFilename());
    Mongo mongo = new Mongo(AppConfig.mongodb_host, AppConfig.mongodb_port);
    DB db = mongo.getDB(AppConfig.DATABASE_LOOP);

    GridFS gf = new GridFS(db, "le.meta");
    GridFSInputFile gfsFile = gf.createFile(file);
    gfsFile.setFilename(le.getFilename());
    gfsFile.setContentType(le.getContentType());
    gfsFile.put("_class", "com.card.loop.xyz.model.LearningElement");
    gfsFile.put("title", le.getTitle());
    gfsFile.put("filePath", le.getFilePath());
    gfsFile.put("subject", le.getSubject());
    gfsFile.put("description", le.getDescription());
    gfsFile.put("downloads", le.getDownloads());
    gfsFile.put("rating", le.getRating());
    gfsFile.put("comments", le.getComments());
    gfsFile.put("uploadedBy", le.getUploadedBy());
    gfsFile.put("status", le.getStatus());
    gfsFile.put("rev", le.getRev());
    gfsFile.put("type", le.getType());
    gfsFile.save();//from   ww w . jav a2s.c  om

    // Let's store our document to MongoDB
    /*   System.out.println("SEARCH: " + search(gfsFile.getMD5(), "le.meta"));
       if(search(gfsFile.getMD5(), "le.meta") > 1){            
    deleteLE(le.getFileName(),"le.meta");
       }*/
    //
    //   collection.insert(info, WriteConcern.SAFE);
    return true;
}

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