| Parameters: |
- conf (oslo.config.cfg.ConfigOpts instance.) – Config instance specified to set default options in it. Using
of instances instead of a global config object prevents conflicts between
options declaration.
- connection (str) – SQL connection string.
Valid SQLite URL forms are:
* sqlite:///:memory: (or, sqlite://)
* sqlite:///relative/path/to/file.db
* sqlite:////absolute/path/to/file.db
- sqlite_db (str) – path to SQLite database file.
- max_pool_size (int) – maximum connections pool size. The size of the pool
to be maintained, defaults to 5. This is the largest number of connections
that will be kept persistently in the pool. Note that the pool begins with
no connections; once this number of connections is requested, that number
of connections will remain.
- max_overflow (int) – The maximum overflow size of the pool. When the
number of checked-out connections reaches the size set in pool_size,
additional connections will be returned up to this limit. When those
additional connections are returned to the pool, they are disconnected and
discarded. It follows then that the total number of simultaneous
connections the pool will allow is pool_size + max_overflow, and the total
number of “sleeping” connections the pool will allow is pool_size.
max_overflow can be set to -1 to indicate no overflow limit; no limit will
be placed on the total number of concurrent connections. Defaults to 10,
will be used if value of the parameter in None.
- pool_timeout (int) – The number of seconds to wait before giving up on
returning a connection. Defaults to 30, will be used if value of the
parameter is None.
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