Python psycopg2.extensions 模块，TRANSACTION_STATUS_UNKNOWN 实例源码

我们从Python开源项目中，提取了以下17个代码示例，用于说明如何使用psycopg2.extensions.TRANSACTION_STATUS_UNKNOWN。

项目：replisome 作者：GambitResearch | 项目源码 | 文件源码

def put_connection(self, cnn):
        if cnn.closed:
            logger.info("discarding closed connection")
            return

        status = cnn.get_transaction_status()
        if status == ext.TRANSACTION_STATUS_UNKNOWN:
            logger.info("closing connection in unknown status")
            cnn.close()
            return

        elif status != ext.TRANSACTION_STATUS_IDLE:
            logger.warn("rolling back transaction in status %s", status)
            cnn.rollback()

        self._connection = cnn

项目：psycopg2-for-aws-lambda 作者：iwitaly | 项目源码 | 文件源码

def _putconn(self, conn, key=None, close=False):
        """Put away a connection."""
        if self.closed:
            raise PoolError("connection pool is closed")
        if key is None:
            key = self._rused.get(id(conn))

        if not key:
            raise PoolError("trying to put unkeyed connection")

        if len(self._pool) < self.minconn and not close:
            # Return the connection into a consistent state before putting
            # it back into the pool
            if not conn.closed:
                status = conn.get_transaction_status()
                if status == _ext.TRANSACTION_STATUS_UNKNOWN:
                    # server connection lost
                    conn.close()
                elif status != _ext.TRANSACTION_STATUS_IDLE:
                    # connection in error or in transaction
                    conn.rollback()
                    self._pool.append(conn)
                else:
                    # regular idle connection
                    self._pool.append(conn)
            # If the connection is closed, we just discard it.
        else:
            conn.close()

        # here we check for the presence of key because it can happen that a
        # thread tries to put back a connection after a call to close
        if not self.closed or key in self._used:
            del self._used[key]
            del self._rused[id(conn)]

项目：psycopg2-for-aws-lambda 作者：iwitaly | 项目源码 | 文件源码

def _putconn(self, conn, key=None, close=False):
        """Put away a connection."""
        if self.closed:
            raise PoolError("connection pool is closed")
        if key is None:
            key = self._rused.get(id(conn))

        if not key:
            raise PoolError("trying to put unkeyed connection")

        if len(self._pool) < self.minconn and not close:
            # Return the connection into a consistent state before putting
            # it back into the pool
            if not conn.closed:
                status = conn.get_transaction_status()
                if status == _ext.TRANSACTION_STATUS_UNKNOWN:
                    # server connection lost
                    conn.close()
                elif status != _ext.TRANSACTION_STATUS_IDLE:
                    # connection in error or in transaction
                    conn.rollback()
                    self._pool.append(conn)
                else:
                    # regular idle connection
                    self._pool.append(conn)
            # If the connection is closed, we just discard it.
        else:
            conn.close()

        # here we check for the presence of key because it can happen that a
        # thread tries to put back a connection after a call to close
        if not self.closed or key in self._used:
            del self._used[key]
            del self._rused[id(conn)]

项目：ShelbySearch 作者：Agentscreech | 项目源码 | 文件源码

def _putconn(self, conn, key=None, close=False):
        """Put away a connection."""
        if self.closed:
            raise PoolError("connection pool is closed")
        if key is None:
            key = self._rused.get(id(conn))

        if not key:
            raise PoolError("trying to put unkeyed connection")

        if len(self._pool) < self.minconn and not close:
            # Return the connection into a consistent state before putting
            # it back into the pool
            if not conn.closed:
                status = conn.get_transaction_status()
                if status == _ext.TRANSACTION_STATUS_UNKNOWN:
                    # server connection lost
                    conn.close()
                elif status != _ext.TRANSACTION_STATUS_IDLE:
                    # connection in error or in transaction
                    conn.rollback()
                    self._pool.append(conn)
                else:
                    # regular idle connection
                    self._pool.append(conn)
            # If the connection is closed, we just discard it.
        else:
            conn.close()

        # here we check for the presence of key because it can happen that a
        # thread tries to put back a connection after a call to close
        if not self.closed or key in self._used:
            del self._used[key]
            del self._rused[id(conn)]