[taler-exchange] branch master updated: move functions into separate file

[gnunet]

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joseph-xu pushed a commit to branch master
in repository exchange.

The following commit(s) were added to refs/heads/master by this push:
     new 55f1217a move functions into separate file
55f1217a is described below

commit 55f1217a3313876a8c5f5ea24be9bd81dc922910
Author: Joseph <Joseph.xu@efrei.net>
AuthorDate: Mon Nov 7 10:35:34 2022 -0500

    move functions into separate file
---
 src/exchangedb/Makefile.am                       |   2 +
 src/exchangedb/pg_delete_aggregation_transient.c |  52 +++++
 src/exchangedb/pg_delete_aggregation_transient.h |  43 ++++
 src/exchangedb/pg_get_link_data.c                | 227 ++++++++++++++++++++
 src/exchangedb/pg_get_link_data.h                |  45 ++++
 src/exchangedb/plugin_exchangedb_postgres.c      | 254 +----------------------
 6 files changed, 375 insertions(+), 248 deletions(-)

diff --git a/src/exchangedb/Makefile.am b/src/exchangedb/Makefile.am
index 0dd83c4b..4145c13c 100644
--- a/src/exchangedb/Makefile.am
+++ b/src/exchangedb/Makefile.am
@@ -75,6 +75,8 @@ libtaler_plugin_exchangedb_postgres_la_SOURCES = \
   pg_get_reserve_history.c pg_get_reserve_history.h \
   pg_get_unfinished_close_requests.c pg_get_unfinished_close_requests.h \
   pg_insert_close_request.c pg_insert_close_request.h \
+  pg_delete_aggregation_transient.h pg_delete_aggregation_transient.c \
+  pg_get_link_data.h pg_get_link_data.c \
   pg_insert_records_by_table.c pg_insert_records_by_table.h \
   pg_insert_reserve_open_deposit.c pg_insert_reserve_open_deposit.h \
   pg_iterate_kyc_reference.c pg_iterate_kyc_reference.h \
diff --git a/src/exchangedb/pg_delete_aggregation_transient.c 
b/src/exchangedb/pg_delete_aggregation_transient.c
new file mode 100644
index 00000000..d0622c0f
--- /dev/null
+++ b/src/exchangedb/pg_delete_aggregation_transient.c
@@ -0,0 +1,52 @@
+/*
+   This file is part of TALER
+   Copyright (C) 2022 Taler Systems SA
+
+   TALER is free software; you can redistribute it and/or modify it under the
+   terms of the GNU General Public License as published by the Free Software
+   Foundation; either version 3, or (at your option) any later version.
+
+   TALER is distributed in the hope that it will be useful, but WITHOUT ANY
+   WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS 
FOR
+   A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License along with
+   TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+ */
+/**
+ * @file exchangedb/pg_delete_aggregation_transient.c
+ * @brief Implementation of the delete_aggregation_transient function for 
Postgres
+ * @author Christian Grothoff
+ */
+#include "platform.h"
+#include "taler_error_codes.h"
+#include "taler_dbevents.h"
+#include "taler_pq_lib.h"
+#include "pg_delete_aggregation_transient.h"
+#include "pg_helper.h"
+
+
+enum GNUNET_DB_QueryStatus
+TEH_PG_delete_aggregation_transient (
+  void *cls,
+  const struct TALER_PaytoHashP *h_payto,
+  const struct TALER_WireTransferIdentifierRawP *wtid)
+{
+  struct PostgresClosure *pg = cls;
+  struct GNUNET_PQ_QueryParam params[] = {
+    GNUNET_PQ_query_param_auto_from_type (h_payto),
+    GNUNET_PQ_query_param_auto_from_type (wtid),
+    GNUNET_PQ_query_param_end
+  };
+
+  PREPARE (pg,
+           "delete_aggregation_transient",
+           "DELETE FROM aggregation_transient"
+           " WHERE wire_target_h_payto=$1"
+           "   AND wtid_raw=$2");
+  return GNUNET_PQ_eval_prepared_non_select (pg->conn,
+                                             "delete_aggregation_transient",
+                                             params);
+}
+
+
diff --git a/src/exchangedb/pg_delete_aggregation_transient.h 
b/src/exchangedb/pg_delete_aggregation_transient.h
new file mode 100644
index 00000000..f74b0179
--- /dev/null
+++ b/src/exchangedb/pg_delete_aggregation_transient.h
@@ -0,0 +1,43 @@
+/*
+   This file is part of TALER
+   Copyright (C) 2022 Taler Systems SA
+
+   TALER is free software; you can redistribute it and/or modify it under the
+   terms of the GNU General Public License as published by the Free Software
+   Foundation; either version 3, or (at your option) any later version.
+
+   TALER is distributed in the hope that it will be useful, but WITHOUT ANY
+   WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS 
FOR
+   A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License along with
+   TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+ */
+/**
+ * @file exchangedb/pg_delete_aggregation_transient.h
+ * @brief implementation of the delete_aggregation_transient function for 
Postgres
+ * @author Christian Grothoff
+ */
+#ifndef PG_DELETE_AGGREGATION_TRANSIENT_H
+#define PG_DELETE_AGGREGATION_TRANSIENT_H
+
+#include "taler_util.h"
+#include "taler_json_lib.h"
+#include "taler_exchangedb_plugin.h"
+
+/**
+ * Delete existing entry in the transient aggregation table.
+ * @a h_payto is only needed for query performance.
+ *
+ * @param cls the @e cls of this struct with the plugin-specific state
+ * @param h_payto destination of the wire transfer
+ * @param wtid the raw wire transfer identifier to update
+ * @return transaction status
+ */
+enum GNUNET_DB_QueryStatus
+TEH_PG_delete_aggregation_transient (
+  void *cls,
+  const struct TALER_PaytoHashP *h_payto,
+  const struct TALER_WireTransferIdentifierRawP *wtid);
+
+#endif
diff --git a/src/exchangedb/pg_get_link_data.c 
b/src/exchangedb/pg_get_link_data.c
new file mode 100644
index 00000000..93086289
--- /dev/null
+++ b/src/exchangedb/pg_get_link_data.c
@@ -0,0 +1,227 @@
+/*
+   This file is part of TALER
+   Copyright (C) 2022 Taler Systems SA
+
+   TALER is free software; you can redistribute it and/or modify it under the
+   terms of the GNU General Public License as published by the Free Software
+   Foundation; either version 3, or (at your option) any later version.
+
+   TALER is distributed in the hope that it will be useful, but WITHOUT ANY
+   WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS 
FOR
+   A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License along with
+   TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+ */
+/**
+ * @file exchangedb/pg_get_link_data.c
+ * @brief Implementation of the get_link_data function for Postgres
+ * @author Christian Grothoff
+ */
+#include "platform.h"
+#include "taler_error_codes.h"
+#include "taler_dbevents.h"
+#include "taler_pq_lib.h"
+#include "pg_get_link_data.h"
+#include "pg_helper.h"
+
+
+/**
+ * Closure for #add_ldl().
+ */
+struct LinkDataContext
+{
+  /**
+   * Function to call on each result.
+   */
+  TALER_EXCHANGEDB_LinkCallback ldc;
+
+  /**
+   * Closure for @e ldc.
+   */
+  void *ldc_cls;
+
+  /**
+   * Last transfer public key for which we have information in @e last.
+   * Only valid if @e last is non-NULL.
+   */
+  struct TALER_TransferPublicKeyP transfer_pub;
+
+  /**
+   * Link data for @e transfer_pub
+   */
+  struct TALER_EXCHANGEDB_LinkList *last;
+
+  /**
+   * Status, set to #GNUNET_SYSERR on errors,
+   */
+  int status;
+};
+
+
+/**
+ * Free memory of the link data list.
+ *
+ * @param cls the @e cls of this struct with the plugin-specific state (unused)
+ * @param ldl link data list to release
+ */
+static void
+free_link_data_list (void *cls,
+                     struct TALER_EXCHANGEDB_LinkList *ldl)
+{
+  struct TALER_EXCHANGEDB_LinkList *next;
+
+  (void) cls;
+  while (NULL != ldl)
+  {
+    next = ldl->next;
+    TALER_denom_pub_free (&ldl->denom_pub);
+    TALER_blinded_denom_sig_free (&ldl->ev_sig);
+    GNUNET_free (ldl);
+    ldl = next;
+  }
+}
+
+
+/**
+ * Function to be called with the results of a SELECT statement
+ * that has returned @a num_results results.
+ *
+ * @param cls closure of type `struct LinkDataContext *`
+ * @param result the postgres result
+ * @param num_results the number of results in @a result
+ */
+static void
+add_ldl (void *cls,
+         PGresult *result,
+         unsigned int num_results)
+{
+  struct LinkDataContext *ldctx = cls;
+
+  for (int i = num_results - 1; i >= 0; i--)
+  {
+    struct TALER_EXCHANGEDB_LinkList *pos;
+    struct TALER_TransferPublicKeyP transfer_pub;
+
+    pos = GNUNET_new (struct TALER_EXCHANGEDB_LinkList);
+    {
+      struct TALER_BlindedPlanchet bp;
+      struct GNUNET_PQ_ResultSpec rs[] = {
+        GNUNET_PQ_result_spec_auto_from_type ("transfer_pub",
+                                              &transfer_pub),
+        GNUNET_PQ_result_spec_auto_from_type ("link_sig",
+                                              &pos->orig_coin_link_sig),
+        TALER_PQ_result_spec_blinded_denom_sig ("ev_sig",
+                                                &pos->ev_sig),
+        GNUNET_PQ_result_spec_uint32 ("freshcoin_index",
+                                      &pos->coin_refresh_offset),
+        TALER_PQ_result_spec_exchange_withdraw_values ("ewv",
+                                                       &pos->alg_values),
+        TALER_PQ_result_spec_denom_pub ("denom_pub",
+                                        &pos->denom_pub),
+        TALER_PQ_result_spec_blinded_planchet ("coin_ev",
+                                               &bp),
+        GNUNET_PQ_result_spec_end
+      };
+
+      if (GNUNET_OK !=
+          GNUNET_PQ_extract_result (result,
+                                    rs,
+                                    i))
+      {
+        GNUNET_break (0);
+        GNUNET_free (pos);
+        ldctx->status = GNUNET_SYSERR;
+        return;
+      }
+      if (TALER_DENOMINATION_CS == bp.cipher)
+      {
+        pos->nonce = bp.details.cs_blinded_planchet.nonce;
+        pos->have_nonce = true;
+      }
+      TALER_blinded_planchet_free (&bp);
+    }
+    if ( (NULL != ldctx->last) &&
+         (0 == GNUNET_memcmp (&transfer_pub,
+                              &ldctx->transfer_pub)) )
+    {
+      pos->next = ldctx->last;
+    }
+    else
+    {
+      if (NULL != ldctx->last)
+      {
+        ldctx->ldc (ldctx->ldc_cls,
+                    &ldctx->transfer_pub,
+                    ldctx->last);
+        free_link_data_list (cls,
+                             ldctx->last);
+      }
+      ldctx->transfer_pub = transfer_pub;
+    }
+    ldctx->last = pos;
+  }
+}
+
+
+enum GNUNET_DB_QueryStatus
+TEH_PG_get_link_data (void *cls,
+                      const struct TALER_CoinSpendPublicKeyP *coin_pub,
+                      TALER_EXCHANGEDB_LinkCallback ldc,
+                      void *ldc_cls)
+{
+  struct PostgresClosure *pg = cls;
+  struct GNUNET_PQ_QueryParam params[] = {
+    GNUNET_PQ_query_param_auto_from_type (coin_pub),
+    GNUNET_PQ_query_param_end
+  };
+  enum GNUNET_DB_QueryStatus qs;
+  struct LinkDataContext ldctx;
+
+  PREPARE (pg,
+           "get_link",
+           "SELECT "
+           " tp.transfer_pub"
+           ",denoms.denom_pub"
+           ",rrc.ev_sig"
+           ",rrc.ewv"
+           ",rrc.link_sig"
+           ",rrc.freshcoin_index"
+           ",rrc.coin_ev"
+           " FROM refresh_commitments"
+           "     JOIN refresh_revealed_coins rrc"
+           "       USING (melt_serial_id)"
+           "     JOIN refresh_transfer_keys tp"
+           "       USING (melt_serial_id)"
+           "     JOIN denominations denoms"
+           "       ON (rrc.denominations_serial = denoms.denominations_serial)"
+           " WHERE old_coin_pub=$1"
+           " ORDER BY tp.transfer_pub, rrc.freshcoin_index ASC");
+  ldctx.ldc = ldc;
+  ldctx.ldc_cls = ldc_cls;
+  ldctx.last = NULL;
+  ldctx.status = GNUNET_OK;
+  qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn,
+                                             "get_link",
+                                             params,
+                                             &add_ldl,
+                                             &ldctx);
+  if (NULL != ldctx.last)
+  {
+    if (GNUNET_OK == ldctx.status)
+    {
+      /* call callback one more time! */
+      ldc (ldc_cls,
+           &ldctx.transfer_pub,
+           ldctx.last);
+    }
+    free_link_data_list (cls,
+                         ldctx.last);
+    ldctx.last = NULL;
+  }
+  if (GNUNET_OK != ldctx.status)
+    return GNUNET_DB_STATUS_HARD_ERROR;
+  return qs;
+}
+
+
diff --git a/src/exchangedb/pg_get_link_data.h 
b/src/exchangedb/pg_get_link_data.h
new file mode 100644
index 00000000..09d3a69f
--- /dev/null
+++ b/src/exchangedb/pg_get_link_data.h
@@ -0,0 +1,45 @@
+/*
+   This file is part of TALER
+   Copyright (C) 2022 Taler Systems SA
+
+   TALER is free software; you can redistribute it and/or modify it under the
+   terms of the GNU General Public License as published by the Free Software
+   Foundation; either version 3, or (at your option) any later version.
+
+   TALER is distributed in the hope that it will be useful, but WITHOUT ANY
+   WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS 
FOR
+   A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License along with
+   TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+ */
+/**
+ * @file exchangedb/pg_get_link_data.h
+ * @brief implementation of the get_link_data function for Postgres
+ * @author Christian Grothoff
+ */
+#ifndef PG_GET_LINK_DATA_H
+#define PG_GET_LINK_DATA_H
+
+#include "taler_util.h"
+#include "taler_json_lib.h"
+#include "taler_exchangedb_plugin.h"
+
+
+/**
+ * Obtain the link data of a coin, that is the encrypted link
+ * information, the denomination keys and the signatures.
+ *
+ * @param cls the `struct PostgresClosure` with the plugin-specific state
+ * @param coin_pub public key of the coin
+ * @param ldc function to call for each session the coin was melted into
+ * @param ldc_cls closure for @a tdc
+ * @return transaction status code
+ */
+enum GNUNET_DB_QueryStatus
+TEH_PG_get_link_data (void *cls,
+                      const struct TALER_CoinSpendPublicKeyP *coin_pub,
+                      TALER_EXCHANGEDB_LinkCallback ldc,
+                      void *ldc_cls);
+
+#endif
diff --git a/src/exchangedb/plugin_exchangedb_postgres.c 
b/src/exchangedb/plugin_exchangedb_postgres.c
index e4f714c2..e7e9ff0e 100644
--- a/src/exchangedb/plugin_exchangedb_postgres.c
+++ b/src/exchangedb/plugin_exchangedb_postgres.c
@@ -30,6 +30,8 @@
 #include "taler_json_lib.h"
 #include "taler_exchangedb_plugin.h"
 #include "plugin_exchangedb_common.h"
+#include "pg_delete_aggregation_transient.h"
+#include "pg_get_link_data.h"
 #include "pg_helper.h"
 #include "pg_do_reserve_open.h"
 #include "pg_get_coin_transactions.h"
@@ -1429,33 +1431,6 @@ prepare_statements (struct PostgresClosure *pg)
       "    ,legitimization_requirement_serial_id=$5"
       " WHERE wire_target_h_payto=$3"
       "   AND wtid_raw=$4"),
-    /* Used in #postgres_delete_aggregation_transient() */
-    GNUNET_PQ_make_prepare (
-      "delete_aggregation_transient",
-      "DELETE FROM aggregation_transient"
-      " WHERE wire_target_h_payto=$1"
-      "   AND wtid_raw=$2"),
-
-    /* Used in #postgres_get_link_data(). */
-    GNUNET_PQ_make_prepare (
-      "get_link",
-      "SELECT "
-      " tp.transfer_pub"
-      ",denoms.denom_pub"
-      ",rrc.ev_sig"
-      ",rrc.ewv"
-      ",rrc.link_sig"
-      ",rrc.freshcoin_index"
-      ",rrc.coin_ev"
-      " FROM refresh_commitments"
-      "     JOIN refresh_revealed_coins rrc"
-      "       USING (melt_serial_id)"
-      "     JOIN refresh_transfer_keys tp"
-      "       USING (melt_serial_id)"
-      "     JOIN denominations denoms"
-      "       ON (rrc.denominations_serial = denoms.denominations_serial)"
-      " WHERE old_coin_pub=$1"
-      " ORDER BY tp.transfer_pub, rrc.freshcoin_index ASC"),
     /* Used in #postgres_lookup_wire_transfer */
     GNUNET_PQ_make_prepare (
       "lookup_transactions",
@@ -5057,34 +5032,6 @@ postgres_update_aggregation_transient (
 }
 
 
-/**
- * Delete existing entry in the transient aggregation table.
- * @a h_payto is only needed for query performance.
- *
- * @param cls the @e cls of this struct with the plugin-specific state
- * @param h_payto destination of the wire transfer
- * @param wtid the raw wire transfer identifier to update
- * @return transaction status
- */
-static enum GNUNET_DB_QueryStatus
-postgres_delete_aggregation_transient (
-  void *cls,
-  const struct TALER_PaytoHashP *h_payto,
-  const struct TALER_WireTransferIdentifierRawP *wtid)
-{
-  struct PostgresClosure *pg = cls;
-  struct GNUNET_PQ_QueryParam params[] = {
-    GNUNET_PQ_query_param_auto_from_type (h_payto),
-    GNUNET_PQ_query_param_auto_from_type (wtid),
-    GNUNET_PQ_query_param_end
-  };
-
-  return GNUNET_PQ_eval_prepared_non_select (pg->conn,
-                                             "delete_aggregation_transient",
-                                             params);
-}
-
-
 /**
  * Obtain information about deposits that are ready to be executed.  Such
  * deposits must not be marked as "done", the execution time must be
@@ -5854,196 +5801,6 @@ cleanup:
 }
 
 
-/**
- * Closure for #add_ldl().
- */
-struct LinkDataContext
-{
-  /**
-   * Function to call on each result.
-   */
-  TALER_EXCHANGEDB_LinkCallback ldc;
-
-  /**
-   * Closure for @e ldc.
-   */
-  void *ldc_cls;
-
-  /**
-   * Last transfer public key for which we have information in @e last.
-   * Only valid if @e last is non-NULL.
-   */
-  struct TALER_TransferPublicKeyP transfer_pub;
-
-  /**
-   * Link data for @e transfer_pub
-   */
-  struct TALER_EXCHANGEDB_LinkList *last;
-
-  /**
-   * Status, set to #GNUNET_SYSERR on errors,
-   */
-  int status;
-};
-
-
-/**
- * Free memory of the link data list.
- *
- * @param cls the @e cls of this struct with the plugin-specific state (unused)
- * @param ldl link data list to release
- */
-static void
-free_link_data_list (void *cls,
-                     struct TALER_EXCHANGEDB_LinkList *ldl)
-{
-  struct TALER_EXCHANGEDB_LinkList *next;
-
-  (void) cls;
-  while (NULL != ldl)
-  {
-    next = ldl->next;
-    TALER_denom_pub_free (&ldl->denom_pub);
-    TALER_blinded_denom_sig_free (&ldl->ev_sig);
-    GNUNET_free (ldl);
-    ldl = next;
-  }
-}
-
-
-/**
- * Function to be called with the results of a SELECT statement
- * that has returned @a num_results results.
- *
- * @param cls closure of type `struct LinkDataContext *`
- * @param result the postgres result
- * @param num_results the number of results in @a result
- */
-static void
-add_ldl (void *cls,
-         PGresult *result,
-         unsigned int num_results)
-{
-  struct LinkDataContext *ldctx = cls;
-
-  for (int i = num_results - 1; i >= 0; i--)
-  {
-    struct TALER_EXCHANGEDB_LinkList *pos;
-    struct TALER_TransferPublicKeyP transfer_pub;
-
-    pos = GNUNET_new (struct TALER_EXCHANGEDB_LinkList);
-    {
-      struct TALER_BlindedPlanchet bp;
-      struct GNUNET_PQ_ResultSpec rs[] = {
-        GNUNET_PQ_result_spec_auto_from_type ("transfer_pub",
-                                              &transfer_pub),
-        GNUNET_PQ_result_spec_auto_from_type ("link_sig",
-                                              &pos->orig_coin_link_sig),
-        TALER_PQ_result_spec_blinded_denom_sig ("ev_sig",
-                                                &pos->ev_sig),
-        GNUNET_PQ_result_spec_uint32 ("freshcoin_index",
-                                      &pos->coin_refresh_offset),
-        TALER_PQ_result_spec_exchange_withdraw_values ("ewv",
-                                                       &pos->alg_values),
-        TALER_PQ_result_spec_denom_pub ("denom_pub",
-                                        &pos->denom_pub),
-        TALER_PQ_result_spec_blinded_planchet ("coin_ev",
-                                               &bp),
-        GNUNET_PQ_result_spec_end
-      };
-
-      if (GNUNET_OK !=
-          GNUNET_PQ_extract_result (result,
-                                    rs,
-                                    i))
-      {
-        GNUNET_break (0);
-        GNUNET_free (pos);
-        ldctx->status = GNUNET_SYSERR;
-        return;
-      }
-      if (TALER_DENOMINATION_CS == bp.cipher)
-      {
-        pos->nonce = bp.details.cs_blinded_planchet.nonce;
-        pos->have_nonce = true;
-      }
-      TALER_blinded_planchet_free (&bp);
-    }
-    if ( (NULL != ldctx->last) &&
-         (0 == GNUNET_memcmp (&transfer_pub,
-                              &ldctx->transfer_pub)) )
-    {
-      pos->next = ldctx->last;
-    }
-    else
-    {
-      if (NULL != ldctx->last)
-      {
-        ldctx->ldc (ldctx->ldc_cls,
-                    &ldctx->transfer_pub,
-                    ldctx->last);
-        free_link_data_list (cls,
-                             ldctx->last);
-      }
-      ldctx->transfer_pub = transfer_pub;
-    }
-    ldctx->last = pos;
-  }
-}
-
-
-/**
- * Obtain the link data of a coin, that is the encrypted link
- * information, the denomination keys and the signatures.
- *
- * @param cls the `struct PostgresClosure` with the plugin-specific state
- * @param coin_pub public key of the coin
- * @param ldc function to call for each session the coin was melted into
- * @param ldc_cls closure for @a tdc
- * @return transaction status code
- */
-static enum GNUNET_DB_QueryStatus
-postgres_get_link_data (void *cls,
-                        const struct TALER_CoinSpendPublicKeyP *coin_pub,
-                        TALER_EXCHANGEDB_LinkCallback ldc,
-                        void *ldc_cls)
-{
-  struct PostgresClosure *pg = cls;
-  struct GNUNET_PQ_QueryParam params[] = {
-    GNUNET_PQ_query_param_auto_from_type (coin_pub),
-    GNUNET_PQ_query_param_end
-  };
-  enum GNUNET_DB_QueryStatus qs;
-  struct LinkDataContext ldctx;
-
-  ldctx.ldc = ldc;
-  ldctx.ldc_cls = ldc_cls;
-  ldctx.last = NULL;
-  ldctx.status = GNUNET_OK;
-  qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn,
-                                             "get_link",
-                                             params,
-                                             &add_ldl,
-                                             &ldctx);
-  if (NULL != ldctx.last)
-  {
-    if (GNUNET_OK == ldctx.status)
-    {
-      /* call callback one more time! */
-      ldc (ldc_cls,
-           &ldctx.transfer_pub,
-           ldctx.last);
-    }
-    free_link_data_list (cls,
-                         ldctx.last);
-    ldctx.last = NULL;
-  }
-  if (GNUNET_OK != ldctx.status)
-    return GNUNET_DB_STATUS_HARD_ERROR;
-  return qs;
-}
-
-
 /**
  * Closure for #handle_wt_result.
  */
@@ -12542,8 +12299,6 @@ libtaler_plugin_exchangedb_postgres_init (void *cls)
     = &postgres_find_aggregation_transient;
   plugin->update_aggregation_transient
     = &postgres_update_aggregation_transient;
-  plugin->delete_aggregation_transient
-    = &postgres_delete_aggregation_transient;
   plugin->get_ready_deposit = &postgres_get_ready_deposit;
   plugin->insert_deposit = &postgres_insert_deposit;
   plugin->insert_refund = &postgres_insert_refund;
@@ -12551,7 +12306,6 @@ libtaler_plugin_exchangedb_postgres_init (void *cls)
   plugin->get_melt = &postgres_get_melt;
   plugin->insert_refresh_reveal = &postgres_insert_refresh_reveal;
   plugin->get_refresh_reveal = &postgres_get_refresh_reveal;
-  plugin->get_link_data = &postgres_get_link_data;
   plugin->lookup_wire_transfer = &postgres_lookup_wire_transfer;
   plugin->lookup_transfer_by_deposit = &postgres_lookup_transfer_by_deposit;
   plugin->insert_aggregation_tracking = &postgres_insert_aggregation_tracking;
@@ -12741,6 +12495,10 @@ libtaler_plugin_exchangedb_postgres_init (void *cls)
     = &TEH_PG_insert_reserve_open_deposit;
   plugin->insert_close_request
     = &TEH_PG_insert_close_request;
+  plugin->delete_aggregation_transient
+    = &TEH_PG_delete_aggregation_transient;
+  plugin->get_link_data
+    = &TEH_PG_get_link_data;
   plugin->iterate_reserve_close_info
     = &TEH_PG_iterate_reserve_close_info;
   plugin->iterate_kyc_reference

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