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wallet: Implement wallet_invoice_nextpaid.

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wallet_invoice_nextpaid is used to iterate over paid invoices,
and will be used to fix waitanyinvoice command.
This commit is contained in:
ZmnSCPxj 2017-12-26 18:50:30 +08:00 committed by Rusty Russell
parent ea1cea6366
commit 993d5dc75a
2 changed files with 85 additions and 0 deletions
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59
wallet/wallet.c
View File

@ -1125,6 +1125,65 @@ bool wallet_htlcs_reconnect(struct wallet *wallet,
return true;
}
int wallet_invoice_nextpaid(const tal_t *cxt,
const struct wallet *wallet,
const char *labelz,
char **outlabel,
struct sha256 *outrhash,
u64 *outmsatoshi)
{
sqlite3_stmt *stmt;
int res;
u64 pay_index;
/* Generate query. */
if (labelz) {
/* Find label. */
stmt = db_prepare(wallet->db,
"SELECT pay_index FROM invoices WHERE label=?;");
sqlite3_bind_text(stmt, 1, labelz, strlen(labelz), SQLITE_TRANSIENT);
res = sqlite3_step(stmt);
if (res != SQLITE_ROW) {
sqlite3_finalize(stmt);
return -1;
}
pay_index = sqlite3_column_int64(stmt, 0);
sqlite3_finalize(stmt);
stmt = db_prepare(wallet->db,
"SELECT label, payment_hash, msatoshi FROM invoices"
" WHERE pay_index NOT NULL"
" AND pay_index > ?"
" ORDER BY pay_index ASC LIMIT 1;");
sqlite3_bind_int64(stmt, 1, pay_index);
} else {
stmt = db_prepare(wallet->db,
"SELECT label, payment_hash, msatoshi FROM invoices"
" WHERE pay_index NOT NULL"
" ORDER BY pay_index ASC LIMIT 1;");
}
res = sqlite3_step(stmt);
if (res != SQLITE_ROW) {
/* No paid invoice found. */
sqlite3_finalize(stmt);
return 0;
} else {
/* Paid invoice found, return data. */
*outlabel = tal_strndup(cxt, sqlite3_column_blob(stmt, 0), sqlite3_column_bytes(stmt, 0));
assert(sqlite3_column_bytes(stmt, 1) == sizeof(struct sha256));
memcpy(outrhash, sqlite3_column_blob(stmt, 1), sqlite3_column_bytes(stmt, 1));
*outmsatoshi = sqlite3_column_int64(stmt, 2);
sqlite3_finalize(stmt);
return 1;
}
return -1;
}
/* Acquire the next pay_index. */
static s64 wallet_invoice_next_pay_index(struct db *db)
{

26
wallet/wallet.h
View File

@ -330,6 +330,32 @@ bool wallet_htlcs_reconnect(struct wallet *wallet,
struct htlc_in_map *htlcs_in,
struct htlc_out_map *htlcs_out);
/**
* wallet_invoice_nextpaid -- Find a paid invoice.
*
* Get the details (label, rhash, msatoshi) of the next paid
* invoice after the invoice with the given label. If label is
* `NULL`, get the details of the first paid invoice. Return -1
* if label is non-`NULL` and is not found, 0 if no more paid
* invoices after specified invoice (or no paid invoices if label
* is `NULL`), 1 if the next paid invoice was found.
*
* @ctx: Context to create the returned label.
* @wallet: Wallet to query
* @labelz: The label to be queried (zero-terminated), or
* `NULL` if first invoice is to be queried.
* @outlabel: Pointer to label of found paid invoice. Caller
* must free if this function returns 1.
* @outrhash: Pointer to struct rhash to be filled.
* @outmsatoshi: Pointer to number of millisatoshis value to pay.
*/
int wallet_invoice_nextpaid(const tal_t *cxt,
const struct wallet *wallet,
const char *labelz,
char **outlabel,
struct sha256 *outrhash,
u64 *outmsatoshi);
/**
* wallet_invoice_save -- Save/update an invoice to the wallet
*