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authorChristian Grothoff <christian@grothoff.org>2018-01-02 14:43:15 +0100
committerChristian Grothoff <christian@grothoff.org>2018-01-02 14:43:15 +0100
commit41b5dde70945b6cb468e412caf6ab7ecd7f56651 (patch)
treec66c53947080f9dabdbb18abe4d416de772fcc53 /src/exchangedb/plugin_exchangedb_postgres.c
parentdad63db5f91b95a5ebb4acc69d3b218aef1411b5 (diff)
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implement select_refunds_by_coin in exchangedb plugin
Diffstat (limited to 'src/exchangedb/plugin_exchangedb_postgres.c')
-rw-r--r--src/exchangedb/plugin_exchangedb_postgres.c123
1 files changed, 123 insertions, 0 deletions
diff --git a/src/exchangedb/plugin_exchangedb_postgres.c b/src/exchangedb/plugin_exchangedb_postgres.c
index 36ae3e54..9c91259b 100644
--- a/src/exchangedb/plugin_exchangedb_postgres.c
+++ b/src/exchangedb/plugin_exchangedb_postgres.c
@@ -3033,6 +3033,128 @@ postgres_insert_refund (void *cls,
/**
+ * Closure for #get_refunds_cb().
+ */
+struct SelectRefundContext
+{
+ /**
+ * Function to call on each result.
+ */
+ TALER_EXCHANGEDB_RefundCoinCallback cb;
+
+ /**
+ * Closure for @a cb.
+ */
+ void *cb_cls;
+
+ /**
+ * Set to #GNUNET_SYSERR on error.
+ */
+ int status;
+};
+
+
+/**
+ * Function to be called with the results of a SELECT statement
+ * that has returned @a num_results results.
+ *
+ * @param cls closure of type `struct SelectRefundContext *`
+ * @param result the postgres result
+ * @param num_result the number of results in @a result
+ */
+static void
+get_refunds_cb (void *cls,
+ PGresult *result,
+ unsigned int num_results)
+{
+ struct SelectRefundContext *srctx = cls;
+
+ for (unsigned int i=0;i<num_results;i++)
+ {
+ struct TALER_MerchantPublicKeyP merchant_pub;
+ struct TALER_MerchantSignatureP merchant_sig;
+ struct GNUNET_HashCode h_contract;
+ uint64_t rtransaction_id;
+ struct TALER_Amount amount_with_fee;
+ struct TALER_Amount refund_fee;
+ struct GNUNET_PQ_ResultSpec rs[] = {
+ GNUNET_PQ_result_spec_auto_from_type ("merchant_pub",
+ &merchant_pub),
+ GNUNET_PQ_result_spec_auto_from_type ("merchant_sig",
+ &merchant_sig),
+ GNUNET_PQ_result_spec_auto_from_type ("h_contract",
+ &h_contract),
+ GNUNET_PQ_result_spec_uint64 ("rtransaction_id",
+ &rtransaction_id),
+ TALER_PQ_result_spec_amount ("amount_with_fee",
+ &amount_with_fee),
+ TALER_PQ_result_spec_amount ("fee_refund",
+ &refund_fee),
+ GNUNET_PQ_result_spec_end
+ };
+
+ if (GNUNET_OK !=
+ GNUNET_PQ_extract_result (result,
+ rs,
+ i))
+ {
+ GNUNET_break (0);
+ srctx->status = GNUNET_SYSERR;
+ return;
+ }
+ if (GNUNET_OK !=
+ srctx->cb (srctx->cb_cls,
+ &merchant_pub,
+ &merchant_sig,
+ &h_contract,
+ rtransaction_id,
+ &amount_with_fee,
+ &refund_fee))
+ return;
+ }
+}
+
+
+/**
+ * Select refunds by @a coin_pub.
+ *
+ * @param cls closure of plugin
+ * @param session database handle to use
+ * @param coin_pub coin to get refunds for
+ * @param cb function to call for each refund found
+ * @param cb_cls closure for @a cb
+ * @return query result status
+ */
+static enum GNUNET_DB_QueryStatus
+postgres_select_refunds_by_coin (void *cls,
+ struct TALER_EXCHANGEDB_Session *session,
+ const struct TALER_CoinSpendPublicKeyP *coin_pub,
+ TALER_EXCHANGEDB_RefundCoinCallback cb,
+ void *cb_cls)
+{
+ enum GNUNET_DB_QueryStatus qs;
+ struct GNUNET_PQ_QueryParam params[] = {
+ GNUNET_PQ_query_param_auto_from_type (coin_pub),
+ GNUNET_PQ_query_param_end
+ };
+ struct SelectRefundContext srctx = {
+ .cb = cb,
+ .cb_cls = cb_cls,
+ .status = GNUNET_OK
+ };
+
+ qs = GNUNET_PQ_eval_prepared_multi_select (session->conn,
+ "get_refunds_by_coin",
+ params,
+ &get_refunds_cb,
+ &srctx);
+ if (GNUNET_SYSERR == srctx.status)
+ return GNUNET_DB_STATUS_HARD_ERROR;
+ return qs;
+}
+
+
+/**
* Lookup refresh melt commitment data under the given @a rc.
*
* @param cls the `struct PostgresClosure` with the plugin-specific state
@@ -6236,6 +6358,7 @@ libtaler_plugin_exchangedb_postgres_init (void *cls)
plugin->iterate_matching_deposits = &postgres_iterate_matching_deposits;
plugin->insert_deposit = &postgres_insert_deposit;
plugin->insert_refund = &postgres_insert_refund;
+ plugin->select_refunds_by_coin = &postgres_select_refunds_by_coin;
plugin->insert_melt = &postgres_insert_melt;
plugin->get_melt = &postgres_get_melt;
plugin->insert_refresh_reveal = &postgres_insert_refresh_reveal;