# Module `src.onionrutils.blockmetadata.hasblock`

Onionr - Private P2P Communication

Returns a bool if a block is in the block metadata db or not

Expand source code

    '''
        Onionr - Private P2P Communication

        Returns a bool if a block is in the block metadata db or not
    '''
    '''
        This program is free software: you can redistribute it and/or modify
        it under the terms of the GNU General Public License as published by
        the Free Software Foundation, either version 3 of the License, or
        (at your option) any later version.

        This program is distributed in the hope that it will be useful,
        but WITHOUT ANY WARRANTY; without even the implied warranty of
        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        GNU General Public License for more details.

        You should have received a copy of the GNU General Public License
        along with this program.  If not, see <https://www.gnu.org/licenses/>.
    '''
    import sqlite3
    from coredb import dbfiles
    import onionrexceptions
    from .. import stringvalidators
    from etc import onionrvalues

    def has_block(hash: str) -> bool:
        '''
            Check for new block in the block meta db
        '''
        conn = sqlite3.connect(dbfiles.block_meta_db, timeout=onionrvalues.DATABASE_LOCK_TIMEOUT)
        c = conn.cursor()
        if not stringvalidators.validate_hash(hash):
            raise onionrexceptions.InvalidHexHash("Invalid hash")
        for result in c.execute("SELECT COUNT() FROM hashes WHERE hash = ?", (hash,)):
            if result[0] >= 1:
                conn.commit()
                conn.close()
                return True
            else:
                conn.commit()
                conn.close()
                return False
        return False

## Functions

`def has_block(hash)`

  Check for new block in the block meta db

  Expand source code

      def has_block(hash: str) -> bool:
          '''
              Check for new block in the block meta db
          '''
          conn = sqlite3.connect(dbfiles.block_meta_db, timeout=onionrvalues.DATABASE_LOCK_TIMEOUT)
          c = conn.cursor()
          if not stringvalidators.validate_hash(hash):
              raise onionrexceptions.InvalidHexHash("Invalid hash")
          for result in c.execute("SELECT COUNT() FROM hashes WHERE hash = ?", (hash,)):
              if result[0] >= 1:
                  conn.commit()
                  conn.close()
                  return True
              else:
                  conn.commit()
                  conn.close()
                  return False
          return False