churn fixes and testcase

1 files changed, 322 insertions, 0 deletions

diff --git a/src/testing/test_testing_topology_churn.c b/src/testing/test_testing_topology_churn.c
new file mode 100644
index 000000000..0d894378f
--- /dev/null
+++ b/src/testing/test_testing_topology_churn.c
@@ -0,0 +1,322 @@
+/*
+     This file is part of GNUnet.
+     (C) 2009 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 testing/test_testing_topology_churn.c
+ * @brief base testcase for testing simple churn functionality
+ */
+#include "platform.h"
+#include "gnunet_testing_lib.h"
+#include "gnunet_core_service.h"
+
+#define VERBOSE GNUNET_YES
+
+/**
+ * How long until we fail the whole testcase?
+ */
+#define TEST_TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 600)
+
+/**
+ * How long until we give up on starting the peers? (Must be longer than the connect timeout!)
+ */
+#define TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 300)
+
+#define DEFAULT_NUM_PEERS 4
+
+static int ok;
+
+static unsigned long long num_peers;
+
+static unsigned int expected_connections;
+
+static unsigned int expected_failed_connections;
+
+static unsigned long long peers_left;
+
+static struct GNUNET_TESTING_PeerGroup *pg;
+
+static struct GNUNET_SCHEDULER_Handle *sched;
+
+const struct GNUNET_CONFIGURATION_Handle *main_cfg;
+
+GNUNET_SCHEDULER_TaskIdentifier die_task;
+
+static char *test_directory;
+
+#define MTYPE 12345
+
+struct GNUNET_TestMessage
+{
+  /**
+   * Header of the message
+   */
+  struct GNUNET_MessageHeader header;
+
+  /**
+   * Unique identifier for this message.
+   */
+  uint32_t uid;
+};
+
+static void
+finish_testing ()
+{
+  GNUNET_assert (pg != NULL);
+
+  if (die_task != GNUNET_SCHEDULER_NO_TASK)
+    GNUNET_SCHEDULER_cancel(sched, die_task);
+
+#if VERBOSE
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+              "Called finish testing, stopping daemons.\n");
+#endif
+
+#if VERBOSE
+          GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+                      "Calling daemons_stop\n");
+#endif
+  GNUNET_TESTING_daemons_stop (pg, TIMEOUT);
+#if VERBOSE
+          GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+                      "daemons_stop finished\n");
+#endif
+
+  ok = 0;
+}
+
+static void
+end_badly (void *cls, const struct GNUNET_SCHEDULER_TaskContext * tc)
+{
+  char *msg = cls;
+  GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+              "End badly was called (%s)... stopping daemons.\n", msg);
+
+  if (pg != NULL)
+    {
+      GNUNET_TESTING_daemons_stop (pg, TIMEOUT);
+      ok = 7331;                /* Opposite of leet */
+    }
+  else
+    ok = 401;                   /* Never got peers started */
+
+}
+
+struct ChurnTestContext
+{
+  GNUNET_SCHEDULER_Task next_task;
+
+};
+
+static struct ChurnTestContext churn_ctx;
+
+/**
+ * Churn callback, report on success or failure of churn operation.
+ *
+ * @param cls closure
+ * @param emsg NULL on success
+ */
+void churn_callback(void *cls,
+                    const char *emsg)
+{
+  if (emsg == NULL)
+    {
+      GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Successfully churned peers!\n", emsg);
+      GNUNET_SCHEDULER_add_now(sched, churn_ctx.next_task, NULL);
+    }
+  else
+    {
+      GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Failed to churn peers with error `%s'\n", emsg);
+      GNUNET_SCHEDULER_cancel(sched, die_task);
+      die_task = GNUNET_SCHEDULER_add_now(sched, &end_badly, NULL);
+    }
+}
+
+
+static void
+churn_peers_both()
+{
+  churn_ctx.next_task = &finish_testing;
+  GNUNET_TESTING_daemons_churn(pg, 1, 1, TIMEOUT, &churn_callback, NULL);
+}
+
+static void
+churn_peers_off_again()
+{
+  churn_ctx.next_task = &churn_peers_both;
+  GNUNET_TESTING_daemons_churn(pg, 2, 0, TIMEOUT, &churn_callback, NULL);
+}
+
+static void
+churn_peers_on()
+{
+  churn_ctx.next_task = &churn_peers_off_again;
+  GNUNET_TESTING_daemons_churn(pg, 0, 2, TIMEOUT, &churn_callback, NULL);
+}
+
+static void
+churn_peers_off()
+{
+  churn_ctx.next_task = &churn_peers_on;
+  GNUNET_TESTING_daemons_churn(pg, 2, 0, TIMEOUT, &churn_callback, NULL);
+}
+
+static void
+peers_started_callback (void *cls,
+       const struct GNUNET_PeerIdentity *id,
+       const struct GNUNET_CONFIGURATION_Handle *cfg,
+       struct GNUNET_TESTING_Daemon *d, const char *emsg)
+{
+  if (emsg != NULL)
+    {
+      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Failed to start daemon with error: `%s'\n",
+                  emsg);
+      return;
+    }
+  GNUNET_assert (id != NULL);
+#if VERBOSE
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Started daemon %llu out of %llu\n",
+              (num_peers - peers_left) + 1, num_peers);
+#endif
+  peers_left--;
+  if (peers_left == 0)
+    {
+#if VERBOSE
+      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+                  "All %d daemons started, now testing churn!\n",
+                  num_peers);
+#endif
+      GNUNET_SCHEDULER_cancel (sched, die_task);
+      /* Set up task in case topology creation doesn't finish
+       * within a reasonable amount of time */
+      die_task = GNUNET_SCHEDULER_add_delayed (sched,
+                                               GNUNET_TIME_relative_multiply
+                                               (GNUNET_TIME_UNIT_MINUTES, 5),
+                                               &end_badly, "from peers_started_callback");
+      churn_peers_off ();
+      ok = 0;
+    }
+}
+
+
+static void
+run (void *cls,
+     struct GNUNET_SCHEDULER_Handle *s,
+     char *const *args,
+     const char *cfgfile, const struct GNUNET_CONFIGURATION_Handle *cfg)
+{
+  sched = s;
+  ok = 1;
+
+#if VERBOSE
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+              "Starting daemons based on config file %s\n", cfgfile);
+#endif
+
+  if (GNUNET_YES != GNUNET_CONFIGURATION_get_value_string(cfg, "paths", "servicehome", &test_directory))
+    {
+      ok = 404;
+      return;
+    }
+
+  if (GNUNET_SYSERR ==
+      GNUNET_CONFIGURATION_get_value_number (cfg, "testing", "num_peers",
+                                             &num_peers))
+    num_peers = DEFAULT_NUM_PEERS;
+
+  main_cfg = cfg;
+
+  peers_left = num_peers;
+
+  /* For this specific test we only really want a CLIQUE topology as the
+   * overlay allowed topology, and a RING topology as the underlying connection
+   * allowed topology.  So we will expect only num_peers * 2 connections to
+   * work, and (num_peers * (num_peers - 1)) - (num_peers * 2) to fail.
+   */
+  expected_connections = num_peers * (num_peers - 1);
+  expected_failed_connections = expected_connections - (num_peers * 2);
+
+
+  /* Set up a task to end testing if peer start fails */
+  die_task = GNUNET_SCHEDULER_add_delayed (sched,
+                                           GNUNET_TIME_relative_multiply
+                                           (GNUNET_TIME_UNIT_MINUTES, 5),
+                                           &end_badly, "didn't start all daemons in reasonable amount of time!!!");
+
+  pg = GNUNET_TESTING_daemons_start (sched, cfg,
+                                     peers_left, TIMEOUT, NULL, NULL, &peers_started_callback, NULL,
+                                     NULL, NULL, NULL);
+
+}
+
+static int
+check ()
+{
+  int ret;
+  char *const argv[] = {"test-testing-topology-churn",
+    "-c",
+    "test_testing_data_topology_churn.conf",
+#if VERBOSE
+    "-L", "DEBUG",
+#endif
+    NULL
+  };
+  struct GNUNET_GETOPT_CommandLineOption options[] = {
+    GNUNET_GETOPT_OPTION_END
+  };
+  ret = GNUNET_PROGRAM_run ((sizeof (argv) / sizeof (char *)) - 1,
+                      argv, "test-testing-topology-churn", "nohelp",
+                      options, &run, &ok);
+  if (ret != GNUNET_OK)
+    {
+      GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "`test-testing-topology-churn': Failed with error code %d\n", ret);
+    }
+
+  return ok;
+}
+
+int
+main (int argc, char *argv[])
+{
+  int ret;
+
+  GNUNET_log_setup ("test_testing_topology_churn",
+#if VERBOSE
+                    "DEBUG",
+#else
+                    "WARNING",
+#endif
+                    NULL);
+  ret = check ();
+
+  /**
+   * Need to remove base directory, subdirectories taken care
+   * of by the testing framework.
+   */
+  if (test_directory != NULL)
+    {
+      if (GNUNET_DISK_directory_remove (test_directory) != GNUNET_OK)
+        {
+          GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Failed to remove testing directory %s\n", test_directory);
+        }
+    }
+
+  return ret;
+}
+
+/* end of test_testing_topology_churn.c */