[taler-merchant] branch master updated: fix

[gnunet]

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grothoff pushed a commit to branch master
in repository merchant.

The following commit(s) were added to refs/heads/master by this push:
     new 5466b94  fix
5466b94 is described below

commit 5466b9471cc85ff5ad9719ed61aaa474ae5b4c23
Author: Christian Grothoff <christian@grothoff.org>
AuthorDate: Mon Sep 14 09:01:00 2020 +0200

    fix
---
 src/backend/taler-merchant-httpd.c         |  3 +-
 src/backenddb/merchantdb_plugin.c          | 36 ++++++++++++++----
 src/backenddb/plugin_merchantdb_postgres.c | 60 ++++++++++++++++++++----------
 src/backenddb/test_merchantdb.c            | 26 +------------
 src/include/taler_merchantdb_lib.h         |  4 +-
 src/include/taler_merchantdb_plugin.h      | 12 ++++++
 src/merchant-tools/taler-merchant-dbinit.c |  9 +----
 7 files changed, 90 insertions(+), 60 deletions(-)

diff --git a/src/backend/taler-merchant-httpd.c 
b/src/backend/taler-merchant-httpd.c
index d4cc835..bf8de66 100644
--- a/src/backend/taler-merchant-httpd.c
+++ b/src/backend/taler-merchant-httpd.c
@@ -1752,7 +1752,8 @@ run (void *cls,
     return;
   }
   if (NULL ==
-      (TMH_db = TALER_MERCHANTDB_plugin_load (cfg)))
+      (TMH_db = TALER_MERCHANTDB_plugin_load (cfg,
+                                              false)))
   {
     GNUNET_SCHEDULER_shutdown ();
     return;
diff --git a/src/backenddb/merchantdb_plugin.c 
b/src/backenddb/merchantdb_plugin.c
index a8e046e..d548ab0 100644
--- a/src/backenddb/merchantdb_plugin.c
+++ b/src/backenddb/merchantdb_plugin.c
@@ -1,6 +1,6 @@
 /*
   This file is part of TALER
-  Copyright (C) 2015, 2016 GNUnet e.V. and INRIA
+  Copyright (C) 2015, 2016, 2020 Taler Systems SA
 
   TALER is free software; you can redistribute it and/or modify it under the
   terms of the GNU Lesser General Public License as published by the Free 
Software
@@ -22,6 +22,7 @@
 #include "platform.h"
 #include <taler/taler_util.h>
 #include "taler_merchantdb_plugin.h"
+#include "taler_merchantdb_lib.h"
 #include <ltdl.h>
 
 
@@ -29,10 +30,12 @@
  * Initialize the plugin.
  *
  * @param[in,out] cfg configuration to use
+ * @param reset_db should the DB be reset on load?
  * @return #GNUNET_OK on success
  */
 struct TALER_MERCHANTDB_Plugin *
-TALER_MERCHANTDB_plugin_load (const struct GNUNET_CONFIGURATION_Handle *cfg)
+TALER_MERCHANTDB_plugin_load (const struct GNUNET_CONFIGURATION_Handle *cfg,
+                              bool reset_db)
 {
   char *plugin_name;
   char *lib_name;
@@ -55,10 +58,29 @@ TALER_MERCHANTDB_plugin_load (const struct 
GNUNET_CONFIGURATION_Handle *cfg)
   GNUNET_free (plugin_name);
   plugin = GNUNET_PLUGIN_load (lib_name,
                                (void *) cfg);
-  if (NULL != plugin)
-    plugin->library_name = lib_name;
-  else
+  if (NULL == plugin)
+  {
     GNUNET_free (lib_name);
+    return NULL;
+  }
+  plugin->library_name = lib_name;
+  if (reset_db)
+  {
+    if (GNUNET_OK !=
+        plugin->connect (plugin->cls,
+                         true))
+    {
+      TALER_MERCHANTDB_plugin_unload (plugin);
+      return NULL;
+    }
+    (void) plugin->drop_tables (plugin->cls);
+  }
+  if (GNUNET_OK !=plugin->connect (plugin->cls,
+                                   false))
+  {
+    TALER_MERCHANTDB_plugin_unload (plugin);
+    return NULL;
+  }
   return plugin;
 }
 
@@ -92,7 +114,7 @@ static char *old_dlsearchpath;
  * Setup libtool paths.
  */
 void __attribute__ ((constructor))
-plugin_init ()
+plugin_init (void)
 {
   int err;
   const char *opath;
@@ -133,7 +155,7 @@ plugin_init ()
  * Shutdown libtool.
  */
 void __attribute__ ((destructor))
-plugin_fini ()
+plugin_fini (void)
 {
   lt_dlsetsearchpath (old_dlsearchpath);
   if (NULL != old_dlsearchpath)
diff --git a/src/backenddb/plugin_merchantdb_postgres.c 
b/src/backenddb/plugin_merchantdb_postgres.c
index b965b0e..ee07245 100644
--- a/src/backenddb/plugin_merchantdb_postgres.c
+++ b/src/backenddb/plugin_merchantdb_postgres.c
@@ -6031,17 +6031,17 @@ postgres_insert_pickup_blind_signature (
 
 
 /**
- * Initialize Postgres database subsystem.
+ * Establish connection to the database.
  *
- * @param cls a configuration instance
- * @return NULL on error, otherwise a `struct TALER_MERCHANTDB_Plugin`
+ * @param cls plugin context
+ * @param for_drop is this to drop/reset the database (so no point in
+ *        preparing statements)?
  */
-void *
-libtaler_plugin_merchantdb_postgres_init (void *cls)
+static int
+postgres_connect (void *cls,
+                  bool for_drop)
 {
-  const struct GNUNET_CONFIGURATION_Handle *cfg = cls;
-  struct PostgresClosure *pg;
-  struct TALER_MERCHANTDB_Plugin *plugin;
+  struct PostgresClosure *pg = cls;
   struct GNUNET_PQ_PreparedStatement ps[] = {
     GNUNET_PQ_make_prepare ("end_transaction",
                             "COMMIT",
@@ -8413,6 +8413,32 @@ libtaler_plugin_merchantdb_postgres_init (void *cls)
     GNUNET_PQ_PREPARED_STATEMENT_END
   };
 
+  pg->conn = GNUNET_PQ_connect_with_cfg (pg->cfg,
+                                         "merchantdb-postgres",
+                                         "merchant-",
+                                         NULL,
+                                         for_drop
+                                         ? NULL
+                                         : ps);
+  if (NULL == pg->conn)
+    return GNUNET_SYSERR;
+  return GNUNET_OK;
+}
+
+
+/**
+ * Initialize Postgres database subsystem.
+ *
+ * @param cls a configuration instance
+ * @return NULL on error, otherwise a `struct TALER_MERCHANTDB_Plugin`
+ */
+void *
+libtaler_plugin_merchantdb_postgres_init (void *cls)
+{
+  const struct GNUNET_CONFIGURATION_Handle *cfg = cls;
+  struct PostgresClosure *pg;
+  struct TALER_MERCHANTDB_Plugin *plugin;
+
   pg = GNUNET_new (struct PostgresClosure);
   pg->cfg = cfg;
   if (GNUNET_OK !=
@@ -8427,17 +8453,6 @@ libtaler_plugin_merchantdb_postgres_init (void *cls)
     GNUNET_free (pg);
     return NULL;
   }
-  pg->conn = GNUNET_PQ_connect_with_cfg (cfg,
-                                         "merchantdb-postgres",
-                                         "merchant-",
-                                         NULL,
-                                         ps);
-  if (NULL == pg->conn)
-  {
-    GNUNET_free (pg->sql_dir);
-    GNUNET_free (pg);
-    return NULL;
-  }
   if (GNUNET_OK !=
       TALER_config_get_currency (cfg,
                                  &pg->currency))
@@ -8449,6 +8464,7 @@ libtaler_plugin_merchantdb_postgres_init (void *cls)
   }
   plugin = GNUNET_new (struct TALER_MERCHANTDB_Plugin);
   plugin->cls = pg;
+  plugin->connect = &postgres_connect;
   plugin->drop_tables = &postgres_drop_tables;
   plugin->preflight = &postgres_preflight;
   plugin->start = &postgres_start;
@@ -8541,7 +8557,11 @@ libtaler_plugin_merchantdb_postgres_done (void *cls)
   struct TALER_MERCHANTDB_Plugin *plugin = cls;
   struct PostgresClosure *pg = plugin->cls;
 
-  GNUNET_PQ_disconnect (pg->conn);
+  if (NULL != pg->conn)
+  {
+    GNUNET_PQ_disconnect (pg->conn);
+    pg->conn = NULL;
+  }
   GNUNET_free (pg->sql_dir);
   GNUNET_free (pg->currency);
   GNUNET_free (pg);
diff --git a/src/backenddb/test_merchantdb.c b/src/backenddb/test_merchantdb.c
index e0ec18d..fa7dffa 100644
--- a/src/backenddb/test_merchantdb.c
+++ b/src/backenddb/test_merchantdb.c
@@ -6660,18 +6660,8 @@ run (void *cls)
   /* Data for 'store_payment()' */
 
   /* Drop the tables to cleanup anything that might cause issues */
-  if (NULL == (plugin = TALER_MERCHANTDB_plugin_load (cfg)))
-  {
-    result = 77;
-    return;
-  }
-
-  GNUNET_break (GNUNET_OK ==
-                plugin->drop_tables (plugin->cls));
-  TALER_MERCHANTDB_plugin_unload (plugin);
-
-  /* Load the plugin */
-  if (NULL == (plugin = TALER_MERCHANTDB_plugin_load (cfg)))
+  if (NULL == (plugin = TALER_MERCHANTDB_plugin_load (cfg,
+                                                      true)))
   {
     result = 77;
     return;
@@ -6691,18 +6681,6 @@ run (void *cls)
     return;
   }
 
-  /* Unload the plugin */
-  TALER_MERCHANTDB_plugin_unload (plugin);
-  if (NULL == (plugin = TALER_MERCHANTDB_plugin_load (cfg)))
-  {
-    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
-                "Plugin unload failed\n");
-    result = 77;
-    return;
-  }
-
-  GNUNET_break (GNUNET_OK ==
-                plugin->drop_tables (plugin->cls));
   TALER_MERCHANTDB_plugin_unload (plugin);
   plugin = NULL;
 }
diff --git a/src/include/taler_merchantdb_lib.h 
b/src/include/taler_merchantdb_lib.h
index 5ebbf73..2820e90 100644
--- a/src/include/taler_merchantdb_lib.h
+++ b/src/include/taler_merchantdb_lib.h
@@ -34,10 +34,12 @@ struct TALER_MERCHANTDB_Plugin;
  * Connect to postgresql database
  *
  * @param[in,out] cfg the configuration handle
+ * @param reset_db should the DB be reset on load?
  * @return connection to the database; NULL upon error
  */
 struct TALER_MERCHANTDB_Plugin *
-TALER_MERCHANTDB_plugin_load (const struct GNUNET_CONFIGURATION_Handle *cfg);
+TALER_MERCHANTDB_plugin_load (const struct GNUNET_CONFIGURATION_Handle *cfg,
+                              bool reset_db);
 
 
 /**
diff --git a/src/include/taler_merchantdb_plugin.h 
b/src/include/taler_merchantdb_plugin.h
index 0270dca..9d2dd23 100644
--- a/src/include/taler_merchantdb_plugin.h
+++ b/src/include/taler_merchantdb_plugin.h
@@ -668,6 +668,18 @@ struct TALER_MERCHANTDB_Plugin
    */
   char *library_name;
 
+  /**
+   * Connect to the database, possibly only to drop the tables. Called first
+   * to complete the initialization.
+   *
+   * @param cls closure
+   * @param for_drop are we going to call drop_tables() next (and then
+   *         possibly again connect()?
+   */
+  int
+  (*connect) (void *cls,
+              bool for_drop);
+
   /**
    * Drop merchant tables. Used for testcases.
    *
diff --git a/src/merchant-tools/taler-merchant-dbinit.c 
b/src/merchant-tools/taler-merchant-dbinit.c
index d5f2da6..938f7d3 100644
--- a/src/merchant-tools/taler-merchant-dbinit.c
+++ b/src/merchant-tools/taler-merchant-dbinit.c
@@ -54,7 +54,8 @@ run (void *cls,
 
   cfg = GNUNET_CONFIGURATION_dup (config);
   if (NULL ==
-      (plugin = TALER_MERCHANTDB_plugin_load (cfg)))
+      (plugin = TALER_MERCHANTDB_plugin_load (cfg,
+                                              reset_db)))
   {
     fprintf (stderr,
              "Failed to initialize database plugin.\n");
@@ -62,12 +63,6 @@ run (void *cls,
     GNUNET_CONFIGURATION_destroy (cfg);
     return;
   }
-  if (reset_db)
-  {
-    (void) plugin->drop_tables (plugin->cls);
-    TALER_MERCHANTDB_plugin_unload (plugin);
-    plugin = TALER_MERCHANTDB_plugin_load (cfg);
-  }
   TALER_MERCHANTDB_plugin_unload (plugin);
   GNUNET_CONFIGURATION_destroy (cfg);
 }

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