support -l/-L options, improve logging

src/auditor/taler-auditor-dbinit.c

@@ -64,8 +64,10 @@ run (void *cls,
     return;
   }
   if (reset_db)
+  {
     (void) plugin->drop_tables (plugin->cls,
                                 GNUNET_YES);
+  }
   if (GNUNET_OK !=
       plugin->create_tables (plugin->cls))
   {

src/auditor/taler-auditor-sign.c

@@ -148,6 +148,8 @@ main (int argc,
       char *const *argv)
 {
   char *cfgfile = NULL;
+  char *loglev = NULL;
+  char *logfile = NULL;
   const struct GNUNET_GETOPT_CommandLineOption options[] = {
     GNUNET_GETOPT_option_filename ('a',
                                    "auditor-key",
@@ -156,6 +158,8 @@ main (int argc,
                                    &auditor_key_file),
     GNUNET_GETOPT_option_cfgfile (&cfgfile),
     GNUNET_GETOPT_option_help ("Sign denomination keys of an exchange"),
+    GNUNET_GETOPT_option_loglevel (&loglev),
+    GNUNET_GETOPT_option_logfile (&logfile),
     GNUNET_GETOPT_option_mandatory
       (GNUNET_GETOPT_option_base32_auto ('m',
                                          "exchange-key",
@@ -191,14 +195,14 @@ main (int argc,
   struct TALER_ExchangeKeyValidityPS kv;
   off_t in_size;
 
-  GNUNET_assert (GNUNET_OK ==
-                 GNUNET_log_setup ("taler-auditor-sign",
-                                   "WARNING",
-                                   NULL));
   if (GNUNET_GETOPT_run ("taler-auditor-sign",
                          options,
                          argc, argv) <= 0)
     return 1;
+  GNUNET_assert (GNUNET_OK ==
+                 GNUNET_log_setup ("taler-auditor-sign",
+                                   loglev,
+                                   logfile));
   if (NULL == cfgfile)
     cfgfile = GNUNET_strdup (GNUNET_OS_project_data_get ()->user_config_file);
   cfg = GNUNET_CONFIGURATION_create ();
@@ -377,6 +381,9 @@ main (int argc,
     return 3;
   }
 
+  GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+              "Taler auditor importing keys for exchange master public key %s\n",
+              TALER_B2S (&master_public_key));
 
   /* Update DB */
   {
@@ -398,6 +405,9 @@ main (int argc,
     {
       const struct TALER_DenominationKeyValidityPS *dk = &dks[i];
 
+      GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+                  "Adding denomination key %s to auditor database\n",
+                  TALER_B2S (&dk->denom_hash));
       qs = adb->insert_denomination_info (adb->cls,
                                           session,
                                           dk);

src/auditor/taler-auditor.c

@@ -33,11 +33,6 @@
  *   verification to improve parallelism / speed -- we'll need to scale
  *   this eventually anyway!
  *
- * KNOWN BUGS:
- * - error handling if denomination keys are used that are not known to the
- *   auditor is, eh, awful / non-existent. We just throw the DB's constraint
- *   violation back at the user. Great UX.
- *
  * UNDECIDED:
  * - do we care about checking the 'done' flag in deposit_cb?
  */
@@ -766,7 +761,13 @@ get_denomination_info_by_hash (const struct GNUNET_HashCode *dh,
                                       &add_denomination,
                                       NULL);
   if (qs <= 0)
+  {
+    if (0 == qs)
+      GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+                  "Denomination %s not found\n",
+                  TALER_B2S (dh));
     return qs;
+  }
   i = GNUNET_CONTAINER_multihashmap_get (denominations,
                                          dh);
   if (NULL != i)
@@ -5290,6 +5291,10 @@ run (void *cls,
     GNUNET_free (master_public_key_str);
   } /* end of -m not given */
 
+  GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+              "Taler auditor running for exchange master public key %s\n",
+              TALER_B2S (&master_pub));
+
   if (GNUNET_OK !=
       GNUNET_CONFIGURATION_get_value_string (cfg,
                                              "taler",