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db: Added DB migrations to get the correct sync height

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The no-rescan change requires us to rescan one last time from the first_blocknum
of our channels (if we have any). The migrations just drop blocks that are
higher, then insert a dummy with the first_blocknum, and then clean up after
us. If we don't have any channels we don't go back at all.

Signed-off-by: Christian Decker <decker.christian@gmail.com>
This commit is contained in:
Christian Decker 2018-04-23 23:53:45 +02:00
parent ac9e5581c8
commit 89ff46f1e6
1 changed files with 10 additions and 0 deletions
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10
wallet/db.c
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@ -318,6 +318,16 @@ char *dbmigrations[] = {
", blockheight INTEGER REFERENCES blocks(height) ON DELETE CASCADE"
", PRIMARY KEY(id)"
");",
/* -- Set the correct rescan height for PR #1398 -- */
/* Delete blocks that are higher than our initial scan point, this is a
* no-op if we don't have a channel. */
"DELETE FROM blocks WHERE height > (SELECT MIN(first_blocknum) FROM channels);",
/* Now make sure we have the lower bound block with the first_blocknum
* height. This may introduce a block with NULL height if we didn't have any
* blocks, remove that in the next. */
"INSERT OR IGNORE INTO blocks (height) VALUES ((SELECT MIN(first_blocknum) FROM channels));",
"DELETE FROM blocks WHERE height IS NULL;",
/* -- End of PR #1398 -- */
NULL,
};