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[GNUnet-SVN] r8575 - gnunet/src/datastore


From: gnunet
Subject: [GNUnet-SVN] r8575 - gnunet/src/datastore
Date: Sun, 14 Jun 2009 21:28:29 -0600

Author: grothoff
Date: 2009-06-14 21:28:28 -0600 (Sun, 14 Jun 2009)
New Revision: 8575

Added:
   gnunet/src/datastore/perf_datastore_api.c
   gnunet/src/datastore/perf_datastore_api_iterators.c
   gnunet/src/datastore/test_datastore_api.c
Modified:
   gnunet/src/datastore/Makefile.am
Log:
importing older testcases / benchmarks, not yet adapted to new API

Modified: gnunet/src/datastore/Makefile.am
===================================================================
--- gnunet/src/datastore/Makefile.am    2009-06-15 03:25:55 UTC (rev 8574)
+++ gnunet/src/datastore/Makefile.am    2009-06-15 03:28:28 UTC (rev 8575)
@@ -55,15 +55,29 @@
  $(GN_PLUGIN_LDFLAGS)
 
 
-#check_PROGRAMS = \
-# test_datastore_api 
-#
-#TESTS = $(check_PROGRAMS)
-#
-#test_datastore_api_SOURCES = \
-# test_datastore_api.c
-#test_datastore_api_LDADD = \
-# $(top_builddir)/src/datastore/libgnunetdatastore.la \
-# $(top_builddir)/src/util/libgnunetutil.la  
+check_PROGRAMS = \
+ test_datastore_api \
+ perf_datastore_api \
+ perf_datastore_api_iterators
 
+TESTS = $(check_PROGRAMS)
 
+test_datastore_api_SOURCES = \
+ test_datastore_api.c
+test_datastore_api_LDADD = \
+ $(top_builddir)/src/datastore/libgnunetdatastore.la \
+ $(top_builddir)/src/util/libgnunetutil.la  
+
+perf_datastore_api_SOURCES = \
+ perf_datastore_api.c
+perf_datastore_api_LDADD = \
+ $(top_builddir)/src/datastore/libgnunetdatastore.la \
+ $(top_builddir)/src/util/libgnunetutil.la  
+
+perf_datastore_api_iterators_SOURCES = \
+ perf_datastore_api_iterators.c
+perf_datastore_api_iterators_LDADD = \
+ $(top_builddir)/src/datastore/libgnunetdatastore.la \
+ $(top_builddir)/src/util/libgnunetutil.la  
+
+

Added: gnunet/src/datastore/perf_datastore_api.c
===================================================================
--- gnunet/src/datastore/perf_datastore_api.c                           (rev 0)
+++ gnunet/src/datastore/perf_datastore_api.c   2009-06-15 03:28:28 UTC (rev 
8575)
@@ -0,0 +1,284 @@
+/*
+     This file is part of GNUnet.
+     (C) 2004, 2005, 2006, 2007 Christian Grothoff (and other contributing 
authors)
+
+     GNUnet 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 2, or (at your
+     option) any later version.
+
+     GNUnet 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 GNUnet; see the file COPYING.  If not, write to the
+     Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+     Boston, MA 02111-1307, USA.
+*/
+/*
+ * @file applications/sqstore_sqlite/sqlitetest2.c
+ * @brief Test for the sqstore implementations.
+ * @author Christian Grothoff
+ *
+ * This testcase inserts a bunch of (variable size) data and then deletes
+ * data until the (reported) database size drops below a given threshold.
+ * This is iterated 10 times, with the actual size of the content stored,
+ * the database size reported and the file size on disk being printed for
+ * each iteration.  The code also prints a "I" for every 40 blocks
+ * inserted and a "D" for every 40 blocks deleted.  The deletion
+ * strategy alternates between "lowest priority" and "earliest expiration".
+ * Priorities and expiration dates are set using a pseudo-random value
+ * within a realistic range.
+ * <p>
+ *
+ * Note that the disk overhead calculations are not very sane for
+ * MySQL: we take the entire /var/lib/mysql directory (best we can
+ * do for ISAM), which may contain other data and which never
+ * shrinks.  The scanning of the entire mysql directory during
+ * each report is also likely to be the cause of a minor
+ * slowdown compared to sqlite.<p>
+ */
+
+#include "platform.h"
+#include "gnunet_util.h"
+#include "gnunet_protocols.h"
+#include "gnunet_sqstore_service.h"
+#include "core.h"
+
+#define ASSERT(x) do { if (! (x)) { printf("Error at %s:%d\n", __FILE__, 
__LINE__); goto FAILURE;} } while (0)
+
+/**
+ * Target datastore size (in bytes).
+ * <p>
+ * Example impact of total size on the reported number
+ * of operations (insert and delete) per second (once
+ * roughly stabilized -- this is not "sound" experimental
+ * data but just a rough idea) for a particular machine:
+ * <pre>
+ *    4: 60   at   7k ops total
+ *    8: 50   at   3k ops total
+ *   16: 48   at   8k ops total
+ *   32: 46   at   8k ops total
+ *   64: 61   at   9k ops total
+ *  128: 89   at   9k ops total
+ * 4092: 11   at 383k ops total (12 GB stored, 14.8 GB DB size on disk, 2.5 GB 
reported)
+ * </pre>
+ * Pure insertion performance into an empty DB initially peaks
+ * at about 400 ops.  The performance seems to drop especially
+ * once the existing (fragmented) ISAM space is filled up and
+ * the DB needs to grow on disk.  This could be explained with
+ * ISAM looking more carefully for defragmentation opportunities.
+ * <p>
+ * MySQL disk space overheads (for otherwise unused database when
+ * run with 128 MB target data size; actual size 651 MB, useful
+ * data stored 520 MB) are quite large in the range of 25-30%.
+ * <p>
+ * This kind of processing seems to be IO bound (system is roughly
+ * at 90% wait, 10% CPU).  This is with MySQL 5.0.
+ *
+ */
+#define MAX_SIZE 1024LL * 1024 * 16
+
+/**
+ * Report progress outside of major reports? Should probably be GNUNET_YES if
+ * size is > 16 MB.
+ */
+#define REPORT_ID GNUNET_NO
+
+/**
+ * Number of put operations equivalent to 1/10th of MAX_SIZE
+ */
+#define PUT_10 MAX_SIZE / 32 / 1024 / 10
+
+/**
+ * Progress report frequency.  1/10th of a put operation block.
+ */
+#define REP_FREQ PUT_10 / 10
+
+/**
+ * Total number of iterations (each iteration doing
+ * PUT_10 put operations); we report full status every
+ * 10 iterations.  Abort with CTRL-C.
+ */
+#define ITERATIONS 100
+
+/**
+ * Name of the database on disk.
+ * You may have to adjust this path and the access
+ * permission to the respective directory in order
+ * to obtain all of the performance information.
+ */
+#define DB_NAME "/tmp/gnunet-sqlite-sqstore-test/data/fs/"
+
+static unsigned long long stored_bytes;
+
+static unsigned long long stored_entries;
+
+static unsigned long long stored_ops;
+
+static GNUNET_CronTime start_time;
+
+static int
+putValue (GNUNET_SQstore_ServiceAPI * api, int i, int k)
+{
+  GNUNET_DatastoreValue *value;
+  size_t size;
+  static GNUNET_HashCode key;
+  static int ic;
+
+  /* most content is 32k */
+  size = sizeof (GNUNET_DatastoreValue) + 32 * 1024;
+  if (GNUNET_random_u32 (GNUNET_RANDOM_QUALITY_WEAK, 16) == 0)  /* but some of 
it is less! */
+    size =
+      sizeof (GNUNET_DatastoreValue) +
+      GNUNET_random_u32 (GNUNET_RANDOM_QUALITY_WEAK, 32 * 1024);
+  size = size - (size & 7);     /* always multiple of 8 */
+
+  /* generate random key */
+  GNUNET_hash (&key, sizeof (GNUNET_HashCode), &key);
+  value = GNUNET_malloc (size);
+  value->size = htonl (size);
+  value->type = htonl (i);
+  value->priority =
+    htonl (GNUNET_random_u32 (GNUNET_RANDOM_QUALITY_WEAK, 100));
+  value->anonymity_level = htonl (i);
+  value->expiration_time =
+    GNUNET_htonll (GNUNET_get_time () +
+                   GNUNET_random_u32 (GNUNET_RANDOM_QUALITY_WEAK, 1000));
+  memset (&value[1], i, size - sizeof (GNUNET_DatastoreValue));
+  if (i > 255)
+    memset (&value[1], i - 255, (size - sizeof (GNUNET_DatastoreValue)) / 2);
+  ((char *) &value[1])[0] = k;
+  if (GNUNET_OK != api->put (&key, value))
+    {
+      GNUNET_free (value);
+      fprintf (stderr, "E");
+      return GNUNET_SYSERR;
+    }
+  ic++;
+#if REPORT_ID
+  if (ic % REP_FREQ == 0)
+    fprintf (stderr, "I");
+#endif
+  stored_bytes += ntohl (value->size);
+  stored_ops++;
+  stored_entries++;
+  GNUNET_free (value);
+  return GNUNET_OK;
+}
+
+static int
+iterateDelete (const GNUNET_HashCode * key,
+               const GNUNET_DatastoreValue * val, void *cls,
+               unsigned long long uid)
+{
+  GNUNET_SQstore_ServiceAPI *api = cls;
+  static int dc;
+
+  if (api->getSize () < MAX_SIZE)
+    return GNUNET_SYSERR;
+  if (GNUNET_shutdown_test () == GNUNET_YES)
+    return GNUNET_SYSERR;
+  dc++;
+#if REPORT_ID
+  if (dc % REP_FREQ == 0)
+    fprintf (stderr, "D");
+#endif
+  stored_bytes -= ntohl (val->size);
+  stored_entries--;
+  return GNUNET_NO;
+}
+
+/**
+ * Add testcode here!
+ */
+static int
+test (GNUNET_SQstore_ServiceAPI * api)
+{
+  int i;
+  int j;
+  unsigned long long size;
+  int have_file;
+  struct stat sbuf;
+
+  have_file = 0 == stat (DB_NAME, &sbuf);
+
+  for (i = 0; i < ITERATIONS; i++)
+    {
+#if REPORT_ID
+      fprintf (stderr, ".");
+#endif
+      /* insert data equivalent to 1/10th of MAX_SIZE */
+      for (j = 0; j < PUT_10; j++)
+        {
+          ASSERT (GNUNET_OK == putValue (api, j, i));
+          if (GNUNET_shutdown_test () == GNUNET_YES)
+            break;
+        }
+
+      /* trim down below MAX_SIZE again */
+      if ((i % 2) == 0)
+        api->iterateLowPriority (0, &iterateDelete, api);
+      else
+        api->iterateExpirationTime (0, &iterateDelete, api);
+
+      size = 0;
+      if (have_file)
+        GNUNET_disk_file_size (NULL, DB_NAME, &size, GNUNET_NO);
+      printf (
+#if REPORT_ID
+               "\n"
+#endif
+               "Useful %llu, API %llu, disk %llu (%.2f%%) / %lluk ops / %llu 
ops/s\n", stored_bytes / 1024,     /* used size in k */
+               api->getSize () / 1024,  /* API-reported size in k */
+               size / 1024,     /* disk size in kb */
+               (100.0 * size / stored_bytes) - 100,     /* overhead */
+               (stored_ops * 2 - stored_entries) / 1024,        /* total 
operations (in k) */
+               1000 * (stored_ops * 2 - stored_entries) / (1 + GNUNET_get_time 
() - start_time));       /* operations per second */
+      if (GNUNET_shutdown_test () == GNUNET_YES)
+        break;
+    }
+  api->drop ();
+  return GNUNET_OK;
+
+FAILURE:
+  api->drop ();
+  return GNUNET_SYSERR;
+}
+
+int
+main (int argc, char *argv[])
+{
+  GNUNET_SQstore_ServiceAPI *api;
+  int ok;
+  struct GNUNET_GC_Configuration *cfg;
+  struct GNUNET_CronManager *cron;
+
+  cfg = GNUNET_GC_create ();
+  if (-1 == GNUNET_GC_parse_configuration (cfg, "check.conf"))
+    {
+      GNUNET_GC_free (cfg);
+      return -1;
+    }
+  cron = GNUNET_cron_create (NULL);
+  GNUNET_CORE_init (NULL, cfg, cron, NULL);
+  api = GNUNET_CORE_request_service ("sqstore");
+  if (api != NULL)
+    {
+      start_time = GNUNET_get_time ();
+      ok = test (api);
+      GNUNET_CORE_release_service (api);
+    }
+  else
+    ok = GNUNET_SYSERR;
+  GNUNET_CORE_done ();
+  GNUNET_cron_destroy (cron);
+  GNUNET_GC_free (cfg);
+  if (ok == GNUNET_SYSERR)
+    return 1;
+  return 0;
+}
+
+/* end of mysqltest2.c */

Added: gnunet/src/datastore/perf_datastore_api_iterators.c
===================================================================
--- gnunet/src/datastore/perf_datastore_api_iterators.c                         
(rev 0)
+++ gnunet/src/datastore/perf_datastore_api_iterators.c 2009-06-15 03:28:28 UTC 
(rev 8575)
@@ -0,0 +1,208 @@
+/*
+     This file is part of GNUnet.
+     (C) 2004, 2005, 2006, 2007 Christian Grothoff (and other contributing 
authors)
+
+     GNUnet 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 2, or (at your
+     option) any later version.
+
+     GNUnet 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 GNUnet; see the file COPYING.  If not, write to the
+     Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+     Boston, MA 02111-1307, USA.
+*/
+/*
+ * @file applications/sqstore_sqlite/sqlitetest3.c
+ * @brief Profile sqstore iterators.
+ * @author Christian Grothoff
+ */
+
+#include "platform.h"
+#include "gnunet_util.h"
+#include "gnunet_protocols.h"
+#include "gnunet_sqstore_service.h"
+#include "core.h"
+
+/**
+ * Target datastore size (in bytes).  Realistic sizes are
+ * more like 16 GB (not the default of 16 MB); however,
+ * those take too long to run them in the usual "make check"
+ * sequence.  Hence the value used for shipping is tiny.
+ */
+#define MAX_SIZE 1024LL * 1024 * 128
+
+#define ITERATIONS 10
+
+/**
+ * Number of put operations equivalent to 1/10th of MAX_SIZE
+ */
+#define PUT_10 (MAX_SIZE / 32 / 1024 / ITERATIONS)
+
+static unsigned long long stored_bytes;
+
+static unsigned long long stored_entries;
+
+static unsigned long long stored_ops;
+
+static GNUNET_CronTime start_time;
+
+static int
+putValue (GNUNET_SQstore_ServiceAPI * api, int i, int k)
+{
+  GNUNET_DatastoreValue *value;
+  size_t size;
+  static GNUNET_HashCode key;
+  static int ic;
+
+  /* most content is 32k */
+  size = sizeof (GNUNET_DatastoreValue) + 32 * 1024;
+
+  if (GNUNET_random_u32 (GNUNET_RANDOM_QUALITY_WEAK, 16) == 0)  /* but some of 
it is less! */
+    size =
+      sizeof (GNUNET_DatastoreValue) +
+      GNUNET_random_u32 (GNUNET_RANDOM_QUALITY_WEAK, 32 * 1024);
+  size = size - (size & 7);     /* always multiple of 8 */
+
+  /* generate random key */
+  key.bits[0] = (unsigned int) GNUNET_get_time ();
+  GNUNET_hash (&key, sizeof (GNUNET_HashCode), &key);
+  value = GNUNET_malloc (size);
+  value->size = htonl (size);
+  value->type = htonl (i);
+  value->priority =
+    htonl (GNUNET_random_u32 (GNUNET_RANDOM_QUALITY_WEAK, 100));
+  value->anonymity_level = htonl (i);
+  value->expiration_time =
+    GNUNET_htonll (GNUNET_get_time () + 60 * GNUNET_CRON_HOURS +
+                   GNUNET_random_u32 (GNUNET_RANDOM_QUALITY_WEAK, 1000));
+  memset (&value[1], i, size - sizeof (GNUNET_DatastoreValue));
+  if (i > 255)
+    memset (&value[1], i - 255, (size - sizeof (GNUNET_DatastoreValue)) / 2);
+  ((char *) &value[1])[0] = k;
+  if (GNUNET_OK != api->put (&key, value))
+    {
+      GNUNET_free (value);
+      fprintf (stderr, "E");
+      return GNUNET_SYSERR;
+    }
+  ic++;
+  stored_bytes += ntohl (value->size);
+  stored_ops++;
+  stored_entries++;
+  GNUNET_free (value);
+  return GNUNET_OK;
+}
+
+static int
+iterateDummy (const GNUNET_HashCode * key, const GNUNET_DatastoreValue * val,
+              void *cls, unsigned long long uid)
+{
+  if (GNUNET_shutdown_test () == GNUNET_YES)
+    return GNUNET_SYSERR;
+  return GNUNET_OK;
+}
+
+static int
+test (GNUNET_SQstore_ServiceAPI * api)
+{
+  int i;
+  int j;
+  int ret;
+  GNUNET_CronTime start;
+  GNUNET_CronTime end;
+
+  for (i = 0; i < ITERATIONS; i++)
+    {
+      /* insert data equivalent to 1/10th of MAX_SIZE */
+      start = GNUNET_get_time ();
+      for (j = 0; j < PUT_10; j++)
+        {
+          if (GNUNET_OK != putValue (api, j, i))
+            break;
+          if (GNUNET_shutdown_test () == GNUNET_YES)
+            break;
+        }
+      end = GNUNET_get_time ();
+      printf ("%3u insertion              took %20llums\n", i, end - start);
+      if (GNUNET_shutdown_test () == GNUNET_YES)
+        break;
+      start = GNUNET_get_time ();
+      ret = api->iterateLowPriority (0, &iterateDummy, api);
+      end = GNUNET_get_time ();
+      printf ("%3u low priority iteration took %20llums (%d)\n", i,
+              end - start, ret);
+      if (GNUNET_shutdown_test () == GNUNET_YES)
+        break;
+      start = GNUNET_get_time ();
+      ret = api->iterateExpirationTime (0, &iterateDummy, api);
+      end = GNUNET_get_time ();
+      printf ("%3u expiration t iteration took %20llums (%d)\n", i,
+              end - start, ret);
+      if (GNUNET_shutdown_test () == GNUNET_YES)
+        break;
+      start = GNUNET_get_time ();
+      ret = api->iterateNonAnonymous (0, &iterateDummy, api);
+      end = GNUNET_get_time ();
+      printf ("%3u non anonymou iteration took %20llums (%d)\n", i,
+              end - start, ret);
+      if (GNUNET_shutdown_test () == GNUNET_YES)
+        break;
+      start = GNUNET_get_time ();
+      ret = api->iterateMigrationOrder (&iterateDummy, api);
+      end = GNUNET_get_time ();
+      printf ("%3u migration or iteration took %20llums (%d)\n", i,
+              end - start, ret);
+      if (GNUNET_shutdown_test () == GNUNET_YES)
+        break;
+      start = GNUNET_get_time ();
+      ret = api->iterateAllNow (&iterateDummy, api);
+      end = GNUNET_get_time ();
+      printf ("%3u all now      iteration took %20llums (%d)\n", i,
+              end - start, ret);
+      if (GNUNET_shutdown_test () == GNUNET_YES)
+        break;
+    }
+  api->drop ();
+  return GNUNET_OK;
+}
+
+int
+main (int argc, char *argv[])
+{
+  GNUNET_SQstore_ServiceAPI *api;
+  int ok;
+  struct GNUNET_GC_Configuration *cfg;
+  struct GNUNET_CronManager *cron;
+
+  cfg = GNUNET_GC_create ();
+  if (-1 == GNUNET_GC_parse_configuration (cfg, "check.conf"))
+    {
+      GNUNET_GC_free (cfg);
+      return -1;
+    }
+  cron = GNUNET_cron_create (NULL);
+  GNUNET_CORE_init (NULL, cfg, cron, NULL);
+  api = GNUNET_CORE_request_service ("sqstore");
+  if (api != NULL)
+    {
+      start_time = GNUNET_get_time ();
+      ok = test (api);
+      GNUNET_CORE_release_service (api);
+    }
+  else
+    ok = GNUNET_SYSERR;
+  GNUNET_CORE_done ();
+  GNUNET_cron_destroy (cron);
+  GNUNET_GC_free (cfg);
+  if (ok == GNUNET_SYSERR)
+    return 1;
+  return 0;
+}
+
+/* end of sqlitetest3.c */

Added: gnunet/src/datastore/test_datastore_api.c
===================================================================
--- gnunet/src/datastore/test_datastore_api.c                           (rev 0)
+++ gnunet/src/datastore/test_datastore_api.c   2009-06-15 03:28:28 UTC (rev 
8575)
@@ -0,0 +1,293 @@
+/*
+     This file is part of GNUnet.
+     (C) 2004, 2005, 2006, 2007 Christian Grothoff (and other contributing 
authors)
+
+     GNUnet 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 2, or (at your
+     option) any later version.
+
+     GNUnet 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 GNUnet; see the file COPYING.  If not, write to the
+     Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+     Boston, MA 02111-1307, USA.
+*/
+/*
+ * @file datastore/test_datastore_api.c
+ * @brief Test for the datastore implementation.
+ * @author Christian Grothoff
+ */
+
+#include "platform.h"
+#include "gnunet_util.h"
+#include "gnunet_protocols.h"
+#include "gnunet_sqstore_service.h"
+#include "core.h"
+
+#define ASSERT(x) do { if (! (x)) { printf("Error at %s:%d\n", __FILE__, 
__LINE__); goto FAILURE;} } while (0)
+
+static GNUNET_CronTime now;
+
+static GNUNET_DatastoreValue *
+initValue (int i)
+{
+  GNUNET_DatastoreValue *value;
+
+  value = GNUNET_malloc (sizeof (GNUNET_DatastoreValue) + 8 * i);
+  value->size = htonl (sizeof (GNUNET_DatastoreValue) + 8 * i);
+  value->type = htonl (i);
+  value->priority = htonl (i + 1);
+  value->anonymity_level = htonl (i);
+  value->expiration_time = GNUNET_htonll (now - i * GNUNET_CRON_SECONDS);
+  memset (&value[1], i, 8 * i);
+  return value;
+}
+
+static int
+checkValue (const GNUNET_HashCode * key,
+            const GNUNET_DatastoreValue * val, void *closure,
+            unsigned long long uid)
+{
+  int i;
+  int ret;
+  GNUNET_DatastoreValue *value;
+
+  i = *(int *) closure;
+  value = initValue (i);
+  if ((value->size == val->size) &&
+      (0 == memcmp (val, value, ntohl (val->size))))
+    ret = GNUNET_OK;
+  else
+    {
+      /*
+         printf("Wanted: %u, %llu; got %u, %llu - %d\n",
+         ntohl(value->size), GNUNET_ntohll(value->expiration_time),
+         ntohl(val->size), GNUNET_ntohll(val->expiration_time),
+         memcmp(val, value, ntohl(val->size))); */
+      ret = GNUNET_SYSERR;
+    }
+  GNUNET_free (value);
+  return ret;
+}
+
+static int
+iterateUp (const GNUNET_HashCode * key, const GNUNET_DatastoreValue * val,
+           int *closure, unsigned long long uid)
+{
+  int ret;
+
+  ret = checkValue (key, val, closure, uid);
+  (*closure) += 2;
+  return ret;
+}
+
+static int
+iterateDown (const GNUNET_HashCode * key,
+             const GNUNET_DatastoreValue * val, int *closure,
+             unsigned long long uid)
+{
+  int ret;
+
+  (*closure) -= 2;
+  ret = checkValue (key, val, closure, uid);
+  return ret;
+}
+
+static int
+iterateDelete (const GNUNET_HashCode * key,
+               const GNUNET_DatastoreValue * val, void *closure,
+               unsigned long long uid)
+{
+  return GNUNET_NO;
+}
+
+static int
+iteratePriority (const GNUNET_HashCode * key,
+                 const GNUNET_DatastoreValue * val,
+                 GNUNET_SQstore_ServiceAPI * api, unsigned long long uid)
+{
+  api->update (uid, 4, 0);
+  return GNUNET_OK;
+}
+
+static int
+priorityCheck (const GNUNET_HashCode * key,
+               const GNUNET_DatastoreValue * val, int *closure,
+               unsigned long long uid)
+{
+  int id;
+
+  id = (*closure);
+  if (id + 1 == ntohl (val->priority))
+    return GNUNET_OK;
+  fprintf (stderr,
+           "Wrong priority, wanted %u got %u\n", id + 1,
+           ntohl (val->priority));
+  return GNUNET_SYSERR;
+}
+
+static int
+multipleCheck (const GNUNET_HashCode * key,
+               const GNUNET_DatastoreValue * val,
+               GNUNET_DatastoreValue ** last, unsigned long long uid)
+{
+  if (*last != NULL)
+    {
+      if (((*last)->size == val->size) &&
+          (0 == memcmp (*last, val, ntohl (val->size))))
+        return GNUNET_SYSERR;   /* duplicate! */
+      GNUNET_free (*last);
+    }
+  *last = GNUNET_malloc (ntohl (val->size));
+  memcpy (*last, val, ntohl (val->size));
+  return GNUNET_OK;
+}
+
+
+/**
+ * Add testcode here!
+ */
+static int
+test (GNUNET_SQstore_ServiceAPI * api)
+{
+  GNUNET_DatastoreValue *value;
+  GNUNET_HashCode key;
+  unsigned long long oldSize;
+  int i;
+
+  now = 1000000;
+  oldSize = api->getSize ();
+  for (i = 0; i < 256; i++)
+    {
+      value = initValue (i);
+      memset (&key, 256 - i, sizeof (GNUNET_HashCode));
+      ASSERT (GNUNET_OK == api->put (&key, value));
+      GNUNET_free (value);
+    }
+  ASSERT (oldSize < api->getSize ());
+  for (i = 255; i >= 0; i--)
+    {
+      memset (&key, 256 - i, sizeof (GNUNET_HashCode));
+      ASSERT (1 == api->get (&key, NULL, i, &checkValue, (void *) &i));
+    }
+  ASSERT (256 ==
+          api->iterateLowPriority (GNUNET_ECRS_BLOCKTYPE_ANY, NULL, NULL));
+  ASSERT (256 ==
+          api->iterateExpirationTime (GNUNET_ECRS_BLOCKTYPE_ANY, NULL, NULL));
+  for (i = 255; i >= 0; i--)
+    {
+      memset (&key, 256 - i, sizeof (GNUNET_HashCode));
+      ASSERT (1 == api->get (&key, NULL, i, &checkValue, (void *) &i));
+    }
+
+  oldSize = api->getSize ();
+  for (i = 255; i >= 0; i -= 2)
+    {
+      memset (&key, 256 - i, sizeof (GNUNET_HashCode));
+      value = initValue (i);
+      if (1 != api->get (&key, NULL, 0, &iterateDelete, NULL))
+        {
+          GNUNET_free (value);
+          ASSERT (0);
+        }
+      GNUNET_free (value);
+    }
+  ASSERT (oldSize > api->getSize ());
+  i = 0;
+  ASSERT (128 == api->iterateLowPriority (GNUNET_ECRS_BLOCKTYPE_ANY,
+                                          (GNUNET_DatastoreValueIterator) &
+                                          iterateUp, &i));
+  ASSERT (256 == i);
+  ASSERT (128 == api->iterateExpirationTime (GNUNET_ECRS_BLOCKTYPE_ANY,
+                                             (GNUNET_DatastoreValueIterator) &
+                                             iterateDown, &i));
+  ASSERT (0 == i);
+  ASSERT (128 == api->iterateExpirationTime (GNUNET_ECRS_BLOCKTYPE_ANY,
+                                             (GNUNET_DatastoreValueIterator) &
+                                             iterateDelete, api));
+  i = 0;
+  ASSERT (0 ==
+          api->iterateExpirationTime (GNUNET_ECRS_BLOCKTYPE_ANY,
+                                      (GNUNET_DatastoreValueIterator) &
+                                      iterateDown, &i));
+  i = 42;
+  value = initValue (i);
+  memset (&key, 256 - i, sizeof (GNUNET_HashCode));
+  api->put (&key, value);
+  ASSERT (1 == api->iterateExpirationTime (GNUNET_ECRS_BLOCKTYPE_ANY,
+                                           (GNUNET_DatastoreValueIterator) &
+                                           priorityCheck, &i));
+  ASSERT (1 == api->iterateExpirationTime (GNUNET_ECRS_BLOCKTYPE_ANY,
+                                           (GNUNET_DatastoreValueIterator) &
+                                           priorityCheck, &i));
+  ASSERT (1 ==
+          api->iterateAllNow ((GNUNET_DatastoreValueIterator) &
+                              iteratePriority, api));
+  i += 4;
+  ASSERT (1 == api->iterateExpirationTime (GNUNET_ECRS_BLOCKTYPE_ANY,
+                                           (GNUNET_DatastoreValueIterator) &
+                                           priorityCheck, &i));
+  GNUNET_free (value);
+
+  /* test multiple results */
+  value = initValue (i + 1);
+  api->put (&key, value);
+  GNUNET_free (value);
+
+  value = NULL;
+  ASSERT (2 == api->iterateExpirationTime (GNUNET_ECRS_BLOCKTYPE_ANY,
+                                           (GNUNET_DatastoreValueIterator) &
+                                           multipleCheck, &value));
+  GNUNET_free (value);
+  ASSERT (2 ==
+          api->iterateAllNow ((GNUNET_DatastoreValueIterator) & iterateDelete,
+                              api));
+  ASSERT (0 ==
+          api->iterateExpirationTime (GNUNET_ECRS_BLOCKTYPE_ANY, NULL, NULL));
+  api->drop ();
+
+  return GNUNET_OK;
+
+FAILURE:
+  api->drop ();
+  return GNUNET_SYSERR;
+}
+
+int
+main (int argc, char *argv[])
+{
+  GNUNET_SQstore_ServiceAPI *api;
+  int ok;
+  struct GNUNET_GC_Configuration *cfg;
+  struct GNUNET_CronManager *cron;
+
+  cfg = GNUNET_GC_create ();
+  if (-1 == GNUNET_GC_parse_configuration (cfg, "check.conf"))
+    {
+      GNUNET_GC_free (cfg);
+      return -1;
+    }
+  cron = GNUNET_cron_create (NULL);
+  GNUNET_CORE_init (NULL, cfg, cron, NULL);
+  api = GNUNET_CORE_request_service ("sqstore");
+  if (api != NULL)
+    {
+      ok = test (api);
+      GNUNET_CORE_release_service (api);
+    }
+  else
+    ok = GNUNET_SYSERR;
+  GNUNET_CORE_done ();
+  GNUNET_cron_destroy (cron);
+  GNUNET_GC_free (cfg);
+  if (ok == GNUNET_SYSERR)
+    return 1;
+  return 0;
+}
+
+/* end of test_datastore_api.c */





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