3f0ec9fa9f
This commit refactors out the complexity of downloading ordered WAL files in parallel to a type called `WALDownloader`. This makes it easier to test the restore separately from the download.
41 lines
758 B
Plaintext
41 lines
758 B
Plaintext
To reproduce this testdata, run sqlite3 and execute:
|
|
|
|
PRAGMA journal_mode = WAL;
|
|
CREATE TABLE t (x);
|
|
INSERT INTO t (x) VALUES (1);
|
|
INSERT INTO t (x) VALUES (2);
|
|
|
|
And copy & split the WAL into segments:
|
|
|
|
sl3 split -o generations/0000000000000000/wal/00000000 db-wal
|
|
cp db-wal 00000000.wal
|
|
|
|
|
|
Then execute:
|
|
|
|
PRAGMA wal_checkpoint(TRUNCATE);
|
|
INSERT INTO t (x) VALUES (3);
|
|
|
|
And split again:
|
|
|
|
sl3 split -o generations/0000000000000000/wal/00000001 db-wal
|
|
cp db-wal 00000001.wal
|
|
|
|
|
|
Then execute:
|
|
|
|
PRAGMA wal_checkpoint(TRUNCATE);
|
|
INSERT INTO t (x) VALUES (4);
|
|
INSERT INTO t (x) VALUES (5);
|
|
|
|
And split again:
|
|
|
|
sl3 split -o generations/0000000000000000/wal/00000002 db-wal
|
|
cp db-wal 00000002.wal
|
|
|
|
|
|
Finally, remove the original database files:
|
|
|
|
rm db*
|
|
|