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wallet: Add new `forwards` table to keep track of forwarded payments 

Signed-off-by: Christian Decker <@cdecker>
This commit is contained in:
Christian Decker 2018-10-16 19:48:09 +02:00 committed by Rusty Russell
parent 6d2e5bace3
commit 07ebc525e9
2 changed files with 43 additions and 0 deletions
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15
wallet/db.c
View File

@ -339,6 +339,21 @@ char *dbmigrations[] = {
"ALTER TABLE channels ADD future_per_commitment_point BLOB;", "ALTER TABLE channels ADD future_per_commitment_point BLOB;",
/* last_sent_commit array fix */ /* last_sent_commit array fix */
"ALTER TABLE channels ADD last_sent_commit BLOB;", "ALTER TABLE channels ADD last_sent_commit BLOB;",
/* Stats table to track forwarded HTLCs. The values in the HTLCs
* and their states are replicated here and the entries are not
* deleted when the HTLC entries or the channel entries are
* deleted to avoid unexpected drops in statistics. */
"CREATE TABLE forwarded_payments ("
" in_htlc_id INTEGER REFERENCES channel_htlcs(id) ON DELETE SET NULL"
", out_htlc_id INTEGER REFERENCES channel_htlcs(id) ON DELETE SET NULL"
", in_channel_scid INTEGER"
", out_channel_scid INTEGER"
", in_msatoshi INTEGER"
", out_msatoshi INTEGER"
", state INTEGER"
", UNIQUE(in_htlc_id, out_htlc_id)"
");",
NULL, NULL,
}; };

28
wallet/wallet.h
View File

@ -118,6 +118,34 @@ static inline enum wallet_output_type wallet_output_type_in_db(enum wallet_outpu
fatal("%s: %u is invalid", __func__, w); fatal("%s: %u is invalid", __func__, w);
} }
/**
* Possible states for forwards
*
*/
/* /!\ This is a DB ENUM, please do not change the numbering of any
* already defined elements (adding is ok) /!\ */
enum forward_status {
FORWARD_OFFERED = 0,
FORWARD_SETTLED = 1,
FORWARD_FAILED = 2
};
static inline enum forward_status wallet_forward_status_in_db(enum forward_status s)
{
switch (s) {
case FORWARD_OFFERED:
BUILD_ASSERT(FORWARD_OFFERED == 0);
return s;
case FORWARD_SETTLED:
BUILD_ASSERT(FORWARD_SETTLED == 1);
return s;
case FORWARD_FAILED:
BUILD_ASSERT(FORWARD_FAILED == 2);
return s;
}
fatal("%s: %u is invalid", __func__, s);
}
/* A database backed shachain struct. The datastructure is /* A database backed shachain struct. The datastructure is
* writethrough, reads are performed from an in-memory version, all * writethrough, reads are performed from an in-memory version, all
* writes are passed through to the DB. */ * writes are passed through to the DB. */