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KYC db methods.

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Add method to insert a merchant into the monitored
entries, and associates a "FALSE" KYC status to it.
This commit is contained in:
Marcello Stanisci 2018-07-09 09:44:16 +02:00
parent edf3738b3f
commit c13973626b
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GPG Key ID: 8D526861953F4C0F
3 changed files with 66 additions and 117 deletions
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135
src/exchangedb/plugin_exchangedb_postgres.c
View File

@ -106,6 +106,7 @@ postgres_drop_tables (void *cls)
struct PostgresClosure *pc = cls;
struct GNUNET_PQ_ExecuteStatement es[] = {
GNUNET_PQ_make_execute ("DROP TABLE IF EXISTS kyc_events CASCADE;"),
GNUNET_PQ_make_execute ("DROP TABLE IF EXISTS kyc_merchants CASCADE;"),
GNUNET_PQ_make_execute ("DROP TABLE IF EXISTS prewire CASCADE;"),
GNUNET_PQ_make_execute ("DROP TABLE IF EXISTS payback CASCADE;"),
GNUNET_PQ_make_execute ("DROP TABLE IF EXISTS aggregation_tracking CASCADE;"),
@ -430,14 +431,26 @@ postgres_create_tables (void *cls)
",buf BYTEA NOT NULL"
");"),
GNUNET_PQ_make_execute("CREATE TABLE IF NOT EXISTS kyc_merchants "
"(payto_url VARCHAR UNIQUE NOT NULL"
",kyc_checked BOOLEAN NOT NULL"
",merchant_serial_id BIGSERIAL PRIMARY KEY"
");"),
GNUNET_PQ_make_try_execute ("CREATE INDEX kyc_merchants_payto_url ON "
"kyc_merchants (payto_url);"),
GNUNET_PQ_make_execute("CREATE TABLE IF NOT EXISTS kyc_events "
"(url TEXT NOT NULL"
",timestamp INT8 NOT NULL"
"(merchant_serial_id BIGSERIAL NOT NULL REFERENCES kyc_merchants (merchant_serial_id) ON DELETE CASCADE"
",amount_val INT8 NOT NULL"
",amount_frac INT4 NOT NULL"
",amount_curr VARCHAR("TALER_CURRENCY_LEN_STR") NOT NULL"
",timestamp INT8 NOT NULL"
");"),
GNUNET_PQ_make_try_execute ("CREATE INDEX kyc_events_timestamp ON "
"kyc_events (timestamp);"),
/* Index for wire_prepare_data_get and gc_prewire statement */
GNUNET_PQ_make_try_execute("CREATE INDEX prepare_iteration_index "
"ON prewire(finished);"),
@ -1275,31 +1288,22 @@ postgres_prepare (PGconn *db_conn)
" ORDER BY prewire_uuid ASC"
" LIMIT 1;",
0),
/* Used in #postgres_insert_kyc_event */
GNUNET_PQ_make_prepare ("kyc_event_insert",
"INSERT INTO kyc_events "
"(url"
",timestamp"
",amount_val"
",amount_frac"
",amount_curr"
") VALUES "
"($1, $2, $3, $4);",
4),
/* Used in #postgres_kyc_event_get_last */
GNUNET_PQ_make_prepare ("kyc_event_get_last",
"SELECT "
" url"
",timestamp"
",amount_val"
",amount_frac"
",amount_curr"
" FROM kyc_events"
" WHERE url=$1"
" ORDER BY timestamp"
" LIMIT 1"
" OFFSET 0;",
/**
* Methods needed to implement KYC monitoring.
*
* 1 Sum money flow for a (unchecked) merchant.
* 2 Change KYC status for a merchant.
* 3 Get KYC status for a merchant.
* 4 Put money flow event for a merchant.
* 5 Delete money flow records for a fresh-checked merchant.
* 6 Put a merchant.
*/
GNUNET_PQ_make_prepare ("insert_kyc_merchant",
"INSERT INTO kyc_merchants "
"(payto_url, kyc_checked) VALUES "
"($1, FALSE)",
1),
/* Used in #postgres_select_deposits_missing_wire */
@ -6512,80 +6516,26 @@ postgres_select_deposits_missing_wire (void *cls,
}
/**
* Save a amount threshold for a KYC check that
* has been triggered for a certain merchant.
* Insert a merchant into the KYC monitor table.
*
* @param cls plugins' closure
* @param url "payto" url identifying the merchant to be checked.
* @param amount the threshold amount associated with the check.
* @return transaction status code.
* @param payto_url payto:// URL indentifying the merchant
* bank account.
* @return database transaction status.
*/
static enum GNUNET_DB_QueryStatus
postgres_insert_kyc_event (void *cls,
struct TALER_EXCHANGEDB_Session *session,
const char *url,
const struct TALER_Amount *amount)
postgres_insert_kyc_merchant (void *cls,
struct TALER_EXCHANGEDB_Session *session,
const char *payto_url)
{
enum GNUNET_DB_QueryStatus qs;
struct GNUNET_PQ_QueryParam params[] = {
GNUNET_PQ_query_param_string (url),
TALER_PQ_query_param_amount (amount),
GNUNET_PQ_query_param_string (payto_url),
GNUNET_PQ_query_param_end
};
qs = GNUNET_PQ_eval_prepared_non_select (session->conn,
"kyc_event_insert",
params);
return qs;
return GNUNET_PQ_eval_prepared_non_select (session->conn,
"insert_kyc_merchant",
params);
}
/**
* Get the _last_ KYC event associated with a certain merchant.
*
* @param cls plugin closure
* @param url the payto URL associated with the merchant whose
* KYC has to be returned.
* @param kyc_cb callback invoked with the timeout of last KYC event
* @param kyc_cb_cls closure for callback above
* @return transaction status
*/
static enum GNUNET_DB_QueryStatus
postgres_kyc_event_get_last (void *cls,
struct TALER_EXCHANGEDB_Session *session,
const char *url,
TALER_EXCHANGEDB_KycCallback kyc_cb,
void *kyc_cb_cls)
{
enum GNUNET_DB_QueryStatus qs;
struct GNUNET_TIME_Absolute ts;
struct GNUNET_PQ_QueryParam params[] = {
GNUNET_PQ_query_param_string (url),
GNUNET_PQ_query_param_end
};
struct GNUNET_PQ_ResultSpec rs[] = {
TALER_PQ_result_spec_absolute_time
("timestamp", &ts),
GNUNET_PQ_result_spec_end
};
qs = GNUNET_PQ_eval_prepared_singleton_select
(session->conn,
"kyc_event_get_last",
params,
rs);
kyc_cb (kyc_cb_cls,
ts);
if (GNUNET_DB_STATUS_SUCCESS_ONE_RESULT == qs)
GNUNET_PQ_cleanup_result (rs);
return qs;
}
/**
* Initialize Postgres database subsystem.
@ -6721,8 +6671,7 @@ libtaler_plugin_exchangedb_postgres_init (void *cls)
plugin->select_deposits_missing_wire
= &postgres_select_deposits_missing_wire;
plugin->insert_kyc_event = postgres_insert_kyc_event;
plugin->kyc_event_get_last = postgres_kyc_event_get_last;
plugin->insert_kyc_merchant = postgres_insert_kyc_merchant;
return plugin;
}

5
src/exchangedb/test_exchangedb.c
View File

@ -2182,6 +2182,11 @@ run (void *cls)
FAILIF (GNUNET_OK !=
test_wire_fees (session));
FAILIF (GNUNET_OK !=
plugin->insert_kyc_merchant (NULL,
session,
"payto:///mock"));
plugin->preflight (plugin->cls,
session);

43
src/include/taler_exchangedb_plugin.h
View File

@ -807,8 +807,17 @@ typedef void
const struct TALER_TransferPublicKeyP *tp);
/**
* Callback for handling a KYC timestamped event associated with
* a certain customer (= merchant).
*
* @param cls closure
* @param url "payto" URL associated with the customer
* @param timeout last time when the KYC was issued to the customer.
*/
typedef void
(*TALER_EXCHANGEDB_KycCallback)(void *cls,
const char *url,
struct GNUNET_TIME_Absolute timeout);
/**
@ -2213,34 +2222,20 @@ struct TALER_EXCHANGEDB_Plugin
void *cb_cls);
/**
* Save a amount threshold for a KYC check that
* has been triggered for a certain merchant.
* Insert a merchant into the KYC monitor table, namely it
* associates a flag to the merchant that indicates whether
* a KYC check has been done or not on this merchant.
*
* @param cls plugins' closure
* @param url "payto" url identifying the merchant to be checked.
* @param amount the threshold amount associated with the check.
* @return transaction status code.
* @param payto_url payto:// URL indentifying the merchant
* bank account.
* @return database transaction status.
*/
enum GNUNET_DB_QueryStatus
(*insert_kyc_event)(void *cls,
struct TALER_EXCHANGEDB_Session *session,
const char *url,
const struct TALER_Amount *amount);
(*insert_kyc_merchant) (void *cls,
struct TALER_EXCHANGEDB_Session *session,
const char *payto_url);
/**
* Get the _last_ KYC event associated with a certain merchant.
*
* @param cls plugin closure
* @param url the payto URL associated with the merchant whose
* KYC has to be returned.
* @return transaction status.
*/
enum GNUNET_DB_QueryStatus
(*kyc_event_get_last) (void *cls,
struct TALER_EXCHANGEDB_Session *session,
const char *url,
TALER_EXCHANGEDB_KycCallback kyc_cb,
void *kyc_cb_cls);
};
#endif /* _TALER_EXCHANGE_DB_H */