1 files changed, 189 insertions, 0 deletions

diff --git a/src/lib/testing/testing_api_cmd_barrier_reached.c b/src/lib/testing/testing_api_cmd_barrier_reached.c
new file mode 100644
index 000000000..35d3cbcd9
--- /dev/null
+++ b/src/lib/testing/testing_api_cmd_barrier_reached.c
@@ -0,0 +1,189 @@
+/*
+      This file is part of GNUnet
+      Copyright (C) 2022 GNUnet e.V.
+
+      GNUnet is free software: you can redistribute it and/or modify it
+      under the terms of the GNU Affero General Public License as published
+      by the Free Software Foundation, either version 3 of the License,
+      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
+      Affero General Public License for more details.
+
+      You should have received a copy of the GNU Affero General Public License
+      along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+     SPDX-License-Identifier: AGPL3.0-or-later
+ */
+
+/**
+ * @file testing/testing_api_cmd_barrier_reached.c
+ * @brief Command to signal barrier was reached.
+ * @author t3sserakt
+ */
+#include "platform.h"
+#include "gnunet_testing_lib.h"
+#include "testing_api_loop.h"
+#include "testing_cmds.h"
+
+/**
+ * Generic logging shortcut
+ */
+#define LOG(kind, ...) GNUNET_log (kind, __VA_ARGS__)
+
+/**
+ * Struct with information for callbacks.
+ *
+ */
+struct BarrierReachedState
+{
+  /**
+   * Context for our asynchronous completion.
+   */
+  struct GNUNET_TESTING_AsyncContext ac;
+
+  /**
+   * The label of this command.
+   */
+  const char *label;
+
+  /**
+   * The name of the barrier this commands wait (if finishing asynchronous) for or/and reaches.
+   */
+  const char *barrier_name;
+
+};
+
+
+/**
+ * Run the command.
+ *
+ * @param cls closure.
+ * @param is the interpreter state.
+ */
+static void
+barrier_reached_run (void *cls,
+                     struct GNUNET_TESTING_Interpreter *is)
+{
+  struct BarrierReachedState *brs = cls;
+  struct GNUNET_TESTING_Barrier *barrier;
+
+  barrier = GNUNET_TESTING_get_barrier_ (is,
+                                         brs->barrier_name);
+  if (NULL == barrier)
+  {
+    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+                "No barrier `%s'\n",
+                brs->barrier_name);
+    GNUNET_TESTING_async_fail (&brs->ac);
+    return;
+  }
+  if (barrier->satisfied)
+  {
+    GNUNET_TESTING_async_finish (&brs->ac);
+    return;
+  }
+  if (barrier->inherited)
+  {
+    struct GNUNET_TESTING_CommandBarrierReached cbr = {
+      .header.size = htons (sizeof (cbr)),
+      .header.type = htons (GNUNET_MESSAGE_TYPE_CMDS_HELPER_BARRIER_REACHED)
+    };
+
+    GNUNET_TESTING_barrier_name_hash_ (brs->barrier_name,
+                                       &cbr.barrier_key);
+    GNUNET_TESTING_loop_notify_parent_ (is,
+                                        &cbr.header);
+    return;
+  }
+  barrier->reached++;
+  if (barrier->reached == barrier->expected_reaches)
+  {
+    struct GNUNET_TESTING_CommandBarrierSatisfied cbs = {
+      .header.size = htons (sizeof (cbs)),
+      .header.type = htons (GNUNET_MESSAGE_TYPE_CMDS_HELPER_BARRIER_CROSSABLE)
+    };
+
+    GNUNET_TESTING_barrier_name_hash_ (brs->barrier_name,
+                                       &cbs.barrier_key);
+    barrier->satisfied = true;
+    GNUNET_TESTING_loop_notify_children_ (is,
+                                          &cbs.header);
+  }
+  if (barrier->satisfied)
+  {
+    GNUNET_TESTING_async_finish (&brs->ac);
+    for (unsigned int i = 0; i<barrier->cnt_waiting; i++)
+      GNUNET_TESTING_async_finish (barrier->waiting[i]);
+    GNUNET_array_grow (barrier->waiting,
+                       barrier->cnt_waiting,
+                       0);
+    return;
+  }
+  GNUNET_array_append (barrier->waiting,
+                       barrier->cnt_waiting,
+                       &brs->ac);
+}
+
+
+/**
+ * Cleanup the state from a "barrier reached" CMD, and possibly
+ * cancel a pending operation thereof.
+ *
+ * @param cls closure.
+ */
+static void
+barrier_reached_cleanup (void *cls)
+{
+  struct BarrierReachedState *brs = cls;
+
+  GNUNET_free (brs);
+}
+
+
+/**
+ * Offer internal data from a "batch" CMD, to other commands.
+ *
+ * @param cls closure.
+ * @param[out] ret result.
+ * @param trait name of the trait.
+ * @param index index number of the object to offer.
+ * @return #GNUNET_OK on success.
+ */
+static enum GNUNET_GenericReturnValue
+barrier_reached_traits (void *cls,
+                        const void **ret,
+                        const char *trait,
+                        unsigned int index)
+{
+  struct GNUNET_TESTING_Trait traits[] = {
+    GNUNET_TESTING_trait_end ()
+  };
+
+  return GNUNET_TESTING_get_trait (traits,
+                                   ret,
+                                   trait,
+                                   index);
+}
+
+
+struct GNUNET_TESTING_Command
+GNUNET_TESTING_cmd_barrier_reached (
+  const char *label,
+  const char *barrier_label)
+{
+  struct BarrierReachedState *brs;
+
+  brs = GNUNET_new (struct BarrierReachedState);
+  brs->label = label;
+  brs->barrier_name = barrier_label;
+  return GNUNET_TESTING_command_new_ac (
+    brs,
+    label,
+    &barrier_reached_run,
+    &barrier_reached_cleanup,
+    &barrier_reached_traits,
+    &brs->ac);
+}