wubloader

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Mike Lang dc2eb6ed74 Add some common database code This code manages the database connections, setting their isolation level correctly and ensuring the idempotent schema is applied before they're used. Applying the schema on startup means we don't need to deal with the database's state, setting it up before running, running migrations etc. However, it does put constraints on the changes we can safely make. Our use of seralizable isolation means that all transactions can be treated as fully independent - the server must behave as though they'd been run seperately in some valid order. This will give us the least surprising results when multiple connections try to modify the same data, though we'll need to deal with occasional transaction commit failures due to conficts.	6 years ago
..
common	Add some common database code	6 years ago
setup.py	parse_segment_path: Use datetime.strptime instead of dateutil.parser	6 years ago

Mike Lang dc2eb6ed74 Add some common database code

This code manages the database connections, setting their isolation level correctly
and ensuring the idempotent schema is applied before they're used.

Applying the schema on startup means we don't need to deal with the database's state,
setting it up before running, running migrations etc. However, it does put constraints on
the changes we can safely make.

Our use of seralizable isolation means that all transactions can be treated as fully
independent - the server must behave as though they'd been run seperately in some valid order.
This will give us the least surprising results when multiple connections try to modify the same
data, though we'll need to deal with occasional transaction commit failures due to conficts.

common

Add some common database code

setup.py

parse_segment_path: Use datetime.strptime instead of dateutil.parser