Beispiel #1
0
int gridfs_read(const char *path, char *buf, size_t size, off_t offset,
        struct fuse_file_info *fi)
{
  path = fuse_to_mongo_path(path);
  size_t len = 0;

  map<string,LocalGridFile*>::const_iterator file_iter;
  file_iter = open_files.find(path);
  if(file_iter != open_files.end()) {
    LocalGridFile *lgf = file_iter->second;
    return lgf->read(buf, size, offset);
  }

  ScopedDbConnection sdc(*gridfs_options.conn_string);
  bool digest = true;
  string err = "";
  sdc.conn().DBClientWithCommands::auth(gridfs_options.db, gridfs_options.username, gridfs_options.password, err, digest);
  fprintf(stderr, "DEBUG: %s\n", err.c_str());
  GridFS gf(sdc.conn(), gridfs_options.db);
  GridFile file = gf.findFile(path);

  if(!file.exists()) {
    sdc.done();
    return -EBADF;
  }

  int chunk_size = file.getChunkSize();
  int chunk_num = offset / chunk_size;

  while(len < size && chunk_num < file.getNumChunks()) {
    GridFSChunk chunk = file.getChunk(chunk_num);
    int to_read;
    int cl = chunk.len();

    const char *d = chunk.data(cl);

    if(len) {
      to_read = min((long unsigned)cl, (long unsigned)(size - len));
      memcpy(buf + len, d, to_read);
    } else {
      to_read = min((long unsigned)(cl - (offset % chunk_size)), (long unsigned)(size - len));
      memcpy(buf + len, d + (offset % chunk_size), to_read);
    }

    len += to_read;
    chunk_num++;
  }

  sdc.done();
  return len;
}
Beispiel #2
0
int gridfs_read(const char *path, char *buf, size_t size, off_t offset,
        struct fuse_file_info *fi)
{
  path = fuse_to_mongo_path(path);
  size_t len = 0;

  map<string,LocalGridFile*>::const_iterator file_iter;
  file_iter = open_files.find(path);
  if(file_iter != open_files.end()) {
    LocalGridFile *lgf = file_iter->second;
    return lgf->read(buf, size, offset);
  }

  ScopedDbConnection sdc(*gridfs_options.conn_string);
  ScopedDbConnection_init(sdc);
  GridFS gf(sdc.conn(), gridfs_options.db, gridfs_options.prefix);
  GridFile file = gf.findFile(path);

  if(!file.exists()) {
    sdc.done();
    return -EBADF;
  }

  int chunk_size = file.getChunkSize();
  int chunk_num = offset / chunk_size;

  while(len < size && chunk_num < file.getNumChunks()) {
    GridFSChunk chunk = file.getChunk(chunk_num);
    int to_read;
    int cl = chunk.len();

    const char *d = chunk.data(cl);

    if(len) {
      to_read = min((long unsigned)cl, (long unsigned)(size - len));
      memcpy(buf + len, d, to_read);
    } else {
      to_read = min((long unsigned)(cl - (offset % chunk_size)), (long unsigned)(size - len));
      memcpy(buf + len, d + (offset % chunk_size), to_read);
    }

    len += to_read;
    chunk_num++;
  }

  sdc.done();
  return len;
}
Beispiel #3
0
int gridfs_flush(const char* path, struct fuse_file_info *ffi)
{
  path = fuse_to_mongo_path(path);

  if(!ffi->fh) {
    return 0;
  }

  map<string,LocalGridFile*>::iterator file_iter;
  file_iter = open_files.find(path);
  if(file_iter == open_files.end()) {
    return -ENOENT;
  }

  LocalGridFile *lgf = file_iter->second;

  if(!lgf->dirty()) {
    return 0;
  }

  ScopedDbConnection sdc(*gridfs_options.conn_string);
  bool digest = true;
  string err = "";
  sdc.conn().DBClientWithCommands::auth(gridfs_options.db, gridfs_options.username, gridfs_options.password, err, digest);
  fprintf(stderr, "DEBUG: %s\n", err.c_str());
  GridFS gf(sdc.conn(), gridfs_options.db);

  if(gf.findFile(path).exists()) {
    gf.removeFile(path);
  }

  size_t len = lgf->getLength();
  char *buf = new char[len];
  lgf->read(buf, len, 0);

  gf.storeFile(buf, len, path);

  sdc.done();

  lgf->flushed();

  return 0;
}
Beispiel #4
0
int gridfs_flush(const char* path, struct fuse_file_info *ffi)
{
  path = fuse_to_mongo_path(path);

  if(!ffi->fh) {
    return 0;
  }

  map<string,LocalGridFile*>::iterator file_iter;
  file_iter = open_files.find(path);
  if(file_iter == open_files.end()) {
    return -ENOENT;
  }

  LocalGridFile *lgf = file_iter->second;

  if(!lgf->dirty()) {
    return 0;
  }

  ScopedDbConnection sdc(*gridfs_options.conn_string);
  ScopedDbConnection_init(sdc);
  GridFS gf(sdc.conn(), gridfs_options.db, gridfs_options.prefix);

  if(gf.findFile(path).exists()) {
    gf.removeFile(path);
  }

  size_t len = lgf->getLength();
  char *buf = new char[len];
  lgf->read(buf, len, 0);

  gf.storeFile(buf, len, path);

  sdc.done();

  lgf->flushed();

  return 0;
}