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db: improve db_col_* APIs.

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1. db_col_text becomes db_col_strdup, which is what is usually wanted.
2. db_col_short_channel_id becomes db_col_short_channel_id_str, to emphasize
   that it stores in string form.  Modern versions should store u64.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell 2021-11-15 04:25:46 +10:30
parent 5b482eb04b
commit befab73070
2 changed files with 11 additions and 6 deletions
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11
wallet/db.c
View file

@ -2230,7 +2230,9 @@ const void *db_col_blob(struct db_stmt *stmt, const char *colname)
return stmt->db->config->column_blob_fn(stmt, col);
}
const unsigned char *db_col_text(struct db_stmt *stmt, const char *colname)
char *db_col_strdup(const tal_t *ctx,
struct db_stmt *stmt,
const char *colname)
{
size_t col = db_query_colnum(stmt, colname);
@ -2238,7 +2240,7 @@ const unsigned char *db_col_text(struct db_stmt *stmt, const char *colname)
log_broken(stmt->db->log, "Accessing a null column %s/%zu in query %s", colname, col, stmt->query->query);
return NULL;
}
return stmt->db->config->column_text_fn(stmt, col);
return tal_strdup(ctx, (char *)stmt->db->config->column_text_fn(stmt, col));
}
void db_col_preimage(struct db_stmt *stmt, const char *colname,
@ -2295,8 +2297,9 @@ void db_col_pubkey(struct db_stmt *stmt,
assert(ok);
}
bool db_col_short_channel_id(struct db_stmt *stmt, const char *colname,
struct short_channel_id *dest)
/* Yes, we put this in as a string. Past mistakes; do not use! */
bool db_col_short_channel_id_str(struct db_stmt *stmt, const char *colname,
struct short_channel_id *dest)
{
size_t col = db_query_colnum(stmt, colname);
const char *source = db_column_blob(stmt, col);

6
wallet/db.h
View file

@ -190,7 +190,9 @@ int db_col_int(struct db_stmt *stmt, const char *colname);
size_t db_col_bytes(struct db_stmt *stmt, const char *colname);
int db_col_is_null(struct db_stmt *stmt, const char *colname);
const void* db_col_blob(struct db_stmt *stmt, const char *colname);
const unsigned char *db_col_text(struct db_stmt *stmt, const char *colname);
char *db_col_strdup(const tal_t *ctx,
struct db_stmt *stmt,
const char *colname);
void db_col_preimage(struct db_stmt *stmt, const char *colname, struct preimage *preimage);
void db_col_amount_msat(struct db_stmt *stmt, const char *colname, struct amount_msat *msat);
void db_col_amount_sat(struct db_stmt *stmt, const char *colname, struct amount_sat *sat);
@ -207,7 +209,7 @@ struct node_id *db_col_node_id_arr(const tal_t *ctx, struct db_stmt *stmt,
const char *colname);
void db_col_pubkey(struct db_stmt *stmt, const char *colname,
struct pubkey *p);
bool db_col_short_channel_id(struct db_stmt *stmt, const char *colname,
bool db_col_short_channel_id_str(struct db_stmt *stmt, const char *colname,
struct short_channel_id *dest);
struct short_channel_id *
db_col_short_channel_id_arr(const tal_t *ctx, struct db_stmt *stmt, const char *colname);