From: Julius Bünger <buenger@mytum.de>
Date: Sat, 16 Jun 2018 10:47:01 +0000 (+0200)
Subject: statistics-cli: add -t for printing statistics of testbed nodes
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=298776c4185d99d2d64f9ff84d1eb662f2f16db7;p=oweals%2Fgnunet.git

statistics-cli: add -t for printing statistics of testbed nodes
---

diff --git a/doc/man/gnunet-statistics.1 b/doc/man/gnunet-statistics.1
index 36f445a09..eed1c1de8 100644
--- a/doc/man/gnunet-statistics.1
+++ b/doc/man/gnunet-statistics.1
@@ -41,6 +41,10 @@ non\-persistent.
 Statistics are kept for various subsystems.  With this option, the
 output can be restricted to a particular subsystem only.
 .B
+.IP "\-t TESTBED_PATH,  \-\-subsystem=TESTBED_PATH"
+When running testbed, you can get statistics of all peers with specefying the
+folder containing the data of all testbed nodes like \fBgnunet\-statistics -t /tmp/testbedARtmQv\fP.
+.B
 .IP "\-v, \-\-version"
 Print GNUnet version number.
 
diff --git a/src/statistics/gnunet-statistics.c b/src/statistics/gnunet-statistics.c
index 648fc89bb..2aefcadee 100644
--- a/src/statistics/gnunet-statistics.c
+++ b/src/statistics/gnunet-statistics.c
@@ -38,6 +38,11 @@ static int ret;
  */
 static char *subsystem;
 
+/**
+ * The path of the testbed data.
+ */
+static char *path_testbed;
+
 /**
  * Set to the specific stat value that we are after (or NULL for all).
  */
@@ -79,10 +84,192 @@ static unsigned long long set_val;
 static int set_value;
 
 /**
- * Handle for pending GET operation.
+ * @brief Representation of all (testbed) nodes.
  */
-static struct GNUNET_STATISTICS_GetHandle *gh;
+static struct Node {
+  /**
+   * @brief Index of the node in this array.
+   */
+  unsigned index_node;
+
+  /**
+   * @brief Configuration handle for this node
+   */
+  struct GNUNET_CONFIGURATION_Handle *conf;
+
+  /**
+   * Handle for pending GET operation.
+   */
+  struct GNUNET_STATISTICS_GetHandle *gh;
+
+  /**
+   * @brief Statistics handle nodes.
+   */
+  struct GNUNET_STATISTICS_Handle *handle;
+  /**
+   * @brief Identifier for shutdown task for this node.
+   */
+  struct GNUNET_SCHEDULER_Task *shutdown_task;
+} *nodes;
 
+/**
+ * @brief Number of configurations of all (testbed) nodes.
+ */
+static unsigned num_nodes;
+
+/**
+ * @brief Set of values for a combination of subsystem and name.
+ */
+struct ValueSet
+{
+  /**
+   * @brief Subsystem of the valueset.
+   */
+  char *subsystem;
+
+  /**
+   * @brief Name of the valueset.
+   */
+  char *name;
+
+  /**
+   * @brief The values.
+   */
+  uint64_t *values;
+
+  /**
+   * @brief Persistence of the values.
+   */
+  int is_persistent;
+};
+
+/**
+ * @brief Collection of all values (represented with #ValueSet).
+ */
+static struct GNUNET_CONTAINER_MultiHashMap *values;
+
+/**
+ * @brief Number of nodes that have their values ready.
+ */
+static int num_nodes_ready;
+
+/**
+ * @brief Create a new #ValueSet
+ *
+ * @param subsystem Subsystem of the valueset.
+ * @param name Name of the valueset.
+ * @param num_values Number of values in valueset - number of peers.
+ * @param is_persistent Persistence status of values.
+ *
+ * @return Newly allocated #ValueSet.
+ */
+static struct ValueSet *
+new_value_set (const char *subsystem,
+               const char *name,
+               unsigned num_values,
+               int is_persistent)
+{
+  struct ValueSet *value_set;
+
+  value_set = GNUNET_new (struct ValueSet);
+  value_set->subsystem = GNUNET_strdup (subsystem);
+  value_set->name = GNUNET_strdup (name);
+  value_set->values = GNUNET_new_array (num_values, uint64_t);
+  value_set->is_persistent = persistent;
+  return value_set;
+}
+
+/**
+ * @brief Print the (collected) values.
+ *
+ * Implements #GNUNET_CONTAINER_HashMapIterator.
+ *
+ * @param cls Closure - unused
+ * @param key #GNUNET_HashCode key of #GNUNET_CONTAINER_MultiHashMap iterator -
+ *        unused
+ * @param value Values represented as #ValueSet.
+ *
+ * @return GNUNET_YES - continue iteration.
+ */
+static int
+printer (void *cls,
+         const struct GNUNET_HashCode *key,
+         void *value)
+{
+  struct GNUNET_TIME_Absolute now = GNUNET_TIME_absolute_get();
+  const char *now_str;
+  struct ValueSet *value_set = value;
+
+  if (quiet == GNUNET_NO)
+  {
+    if (GNUNET_YES == watch)
+    {
+      now_str = GNUNET_STRINGS_absolute_time_to_string (now);
+      FPRINTF (stdout,
+	       "%24s %s%12s %50s: ",
+               now_str,
+               value_set->is_persistent ? "!" : " ",
+               value_set->subsystem,
+	             _(value_set->name));
+    }
+    else
+    {
+      FPRINTF (stdout,
+	       "%s%12s %50s: ",
+               value_set->is_persistent ? "!" : " ",
+               value_set->subsystem,
+               _(value_set->name));
+    }
+  }
+  for (unsigned i = 0; i < num_nodes; i++)
+  {
+    FPRINTF (stdout,
+            "%16llu",
+            (unsigned long long) value_set->values[i]);
+  }
+  FPRINTF (stdout, "\n");
+  GNUNET_free (value_set->subsystem);
+  GNUNET_free (value_set->name);
+  GNUNET_free (value_set->values);
+  GNUNET_free (value_set);
+  return GNUNET_YES;
+}
+
+/**
+ * @brief Called once all statistic values are available.
+ *
+ * Implements #GNUNET_STATISTICS_Callback
+ *
+ * @param cls Closure - The index of the node.
+ * @param succes Whether statistics were obtained successfully.
+ */
+static void
+continuation_print (void *cls,
+                    int success)
+{
+  const unsigned index_node = *(unsigned *) cls;
+
+  nodes[index_node].gh = NULL;
+  if (GNUNET_OK != success)
+  {
+    if (NULL == remote_host)
+      FPRINTF (stderr,
+               "%s",
+               _("Failed to obtain statistics.\n"));
+    else
+      FPRINTF (stderr,
+               _("Failed to obtain statistics from host `%s:%llu'\n"),
+               remote_host,
+               remote_port);
+    ret = 1;
+  }
+  num_nodes_ready++;
+  if (num_nodes_ready == num_nodes)
+  {
+    GNUNET_CONTAINER_multihashmap_iterate (values, printer, NULL);
+    GNUNET_SCHEDULER_shutdown();
+  }
+}
 
 /**
  * Callback function to process statistic values.
@@ -95,11 +282,11 @@ static struct GNUNET_STATISTICS_GetHandle *gh;
  * @return #GNUNET_OK to continue, #GNUNET_SYSERR to abort iteration
  */
 static int
-printer (void *cls,
-         const char *subsystem,
-         const char *name,
-         uint64_t value,
-         int is_persistent)
+printer_watch (void *cls,
+               const char *subsystem,
+               const char *name,
+               uint64_t value,
+               int is_persistent)
 {
   struct GNUNET_TIME_Absolute now = GNUNET_TIME_absolute_get();
   const char *now_str;
@@ -135,7 +322,6 @@ printer (void *cls,
   return GNUNET_OK;
 }
 
-
 /**
  * Function called last by the statistics code.
  *
@@ -147,7 +333,10 @@ static void
 cleanup (void *cls,
          int success)
 {
-  gh = NULL;
+  for (unsigned i = 0; i < num_nodes; i++)
+  {
+    nodes[i].gh = NULL;
+  }
   if (GNUNET_OK != success)
   {
     if (NULL == remote_host)
@@ -164,6 +353,55 @@ cleanup (void *cls,
   GNUNET_SCHEDULER_shutdown ();
 }
 
+/**
+ * @brief Iterate over statistics values and store them in #values.
+ * They will be printed once all are available.
+ *
+ * @param cls Cosure - Node index.
+ * @param subsystem Subsystem of the value.
+ * @param name Name of the value.
+ * @param value Value itself.
+ * @param is_persistent Persistence.
+ *
+ * @return GNUNET_OK - continue.
+ */
+static int
+collector (void *cls,
+           const char *subsystem,
+           const char *name,
+           uint64_t value,
+           int is_persistent)
+{
+  const unsigned index_node = *(unsigned *) cls;
+  struct GNUNET_HashCode *key;
+  struct GNUNET_HashCode hc;
+  char *subsys_name;
+  unsigned len_subsys_name;
+  struct ValueSet *value_set;
+
+  len_subsys_name = strlen (subsystem) + 3 + strlen (name) + 1;
+  subsys_name = GNUNET_malloc (len_subsys_name);
+  SPRINTF (subsys_name, "%s---%s", subsystem, name);
+  key = &hc;
+  GNUNET_CRYPTO_hash (subsys_name, len_subsys_name, key);
+  GNUNET_free (subsys_name);
+  if (GNUNET_YES == GNUNET_CONTAINER_multihashmap_contains (values, key))
+  {
+    // get
+    value_set = GNUNET_CONTAINER_multihashmap_get (values, key);
+  }
+  else
+  {
+    // new
+    value_set = new_value_set (subsystem, name, num_nodes, is_persistent);
+  }
+  // write
+  value_set->values[index_node] = value;
+  // put
+  GNUNET_CONTAINER_multihashmap_put (values, key, value_set,
+      GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY);
+  return GNUNET_OK;
+}
 
 /**
  * Function run on shutdown to clean up.
@@ -173,10 +411,30 @@ cleanup (void *cls,
 static void
 shutdown_task (void *cls)
 {
-  struct GNUNET_STATISTICS_Handle *h = cls;
+  const unsigned index_node = *(unsigned *) cls;
+  struct GNUNET_STATISTICS_Handle *h;
+  struct GNUNET_STATISTICS_GetHandle *gh;
 
+  nodes[index_node].shutdown_task = NULL;
+  if ( (NULL != path_testbed) &&
+       (NULL != nodes[index_node].conf) )
+  {
+    GNUNET_CONFIGURATION_destroy (nodes[index_node].conf);
+    nodes[index_node].conf = NULL;
+  }
+
+  h = nodes[index_node].handle;
+  gh = nodes[index_node].gh;
   if (NULL == h)
+  {
+    num_nodes_ready--;
+    if (0 == num_nodes_ready)
+    {
+      GNUNET_array_grow (nodes, num_nodes, 0);
+      GNUNET_CONTAINER_multihashmap_destroy (values);
+    }
     return;
+  }
   if (NULL != gh)
   {
     GNUNET_STATISTICS_get_cancel (gh);
@@ -186,14 +444,21 @@ shutdown_task (void *cls)
        (NULL != subsystem) &&
        (NULL != name) )
     GNUNET_assert (GNUNET_OK ==
-		   GNUNET_STATISTICS_watch_cancel (h,
+       GNUNET_STATISTICS_watch_cancel (h,
                                                    subsystem,
                                                    name,
-                                                   &printer,
-						   h));
+                                                   &printer_watch,
+               &nodes[index_node].index_node));
   GNUNET_STATISTICS_destroy (h,
                              GNUNET_NO);
   h = NULL;
+
+  num_nodes_ready--;
+  if (0 == num_nodes_ready)
+  {
+    GNUNET_array_grow (nodes, num_nodes, 0);
+    GNUNET_CONTAINER_multihashmap_destroy (values);
+  }
 }
 
 
@@ -205,8 +470,8 @@ shutdown_task (void *cls)
 static void
 main_task (void *cls)
 {
-  const struct GNUNET_CONFIGURATION_Handle *cfg = cls;
-  struct GNUNET_STATISTICS_Handle *h;
+  unsigned index_node = *(unsigned *) cls;
+  const struct GNUNET_CONFIGURATION_Handle *cfg = nodes[index_node].conf;
 
   if (set_value)
   {
@@ -226,23 +491,23 @@ main_task (void *cls)
       ret = 1;
       return;
     }
-    h = GNUNET_STATISTICS_create (subsystem,
+    nodes[index_node].handle = GNUNET_STATISTICS_create (subsystem,
 				  cfg);
-    if (NULL == h)
+    if (NULL == nodes[index_node].handle)
     {
       ret = 1;
       return;
     }
-    GNUNET_STATISTICS_set (h,
+    GNUNET_STATISTICS_set (nodes[index_node].handle,
                            name,
                            (uint64_t) set_val,
                            persistent);
-    GNUNET_STATISTICS_destroy (h,
+    GNUNET_STATISTICS_destroy (nodes[index_node].handle,
                                GNUNET_YES);
-    h = NULL;
+    nodes[index_node].handle = NULL;
     return;
   }
-  if (NULL == (h = GNUNET_STATISTICS_create ("gnunet-statistics",
+  if (NULL == (nodes[index_node].handle = GNUNET_STATISTICS_create ("gnunet-statistics",
                                              cfg)))
   {
     ret = 1;
@@ -251,13 +516,13 @@ main_task (void *cls)
   if (GNUNET_NO == watch)
   {
     if (NULL ==
-        (gh = GNUNET_STATISTICS_get (h,
-                                     subsystem,
-                                     name,
-                                     &cleanup,
-                                     &printer,
-				     h)) )
-      cleanup (h,
+        (nodes[index_node].gh = GNUNET_STATISTICS_get (nodes[index_node].handle,
+                                                       subsystem,
+                                                       name,
+                                                       &continuation_print,
+                                                       &collector,
+				     &nodes[index_node].index_node)) )
+      cleanup (nodes[index_node].handle,
 	       GNUNET_SYSERR);
   }
   else
@@ -266,30 +531,128 @@ main_task (void *cls)
 	 (NULL == name) )
     {
       printf (_("No subsystem or name given\n"));
-      GNUNET_STATISTICS_destroy (h,
+      GNUNET_STATISTICS_destroy (nodes[index_node].handle,
 				 GNUNET_NO);
-      h = NULL;
+      nodes[index_node].handle = NULL;
       ret = 1;
       return;
     }
     if (GNUNET_OK !=
-        GNUNET_STATISTICS_watch (h,
+        GNUNET_STATISTICS_watch (nodes[index_node].handle,
                                  subsystem,
                                  name,
-                                 &printer,
-				 h))
+                                 &printer_watch,
+				 &nodes[index_node].index_node))
     {
       fprintf (stderr,
                _("Failed to initialize watch routine\n"));
-      GNUNET_SCHEDULER_add_now (&shutdown_task,
-                                h);
+      nodes[index_node].shutdown_task =
+        GNUNET_SCHEDULER_add_now (&shutdown_task,
+                                  &nodes[index_node].index_node);
       return;
     }
   }
-  GNUNET_SCHEDULER_add_shutdown (&shutdown_task,
-                                 h);
+  nodes[index_node].shutdown_task =
+    GNUNET_SCHEDULER_add_shutdown (&shutdown_task,
+                                   &nodes[index_node].index_node);
 }
 
+/**
+ * @brief Iter over content of a node's directory to check for existence of a
+ * config file.
+ *
+ * Implements #GNUNET_FileNameCallback
+ *
+ * @param cls pointer to indicate success
+ * @param filename filename inside the directory of the potential node
+ *
+ * @return to continue iteration or not to
+ */
+static int
+iter_check_config (void *cls,
+                   const char *filename)
+{
+  if (0 == strncmp (GNUNET_STRINGS_get_short_name (filename), "config", 6))
+  {
+    /* Found the config - stop iteration successfully */
+    GNUNET_array_grow (nodes, num_nodes, num_nodes+1);
+    nodes[num_nodes-1].conf = GNUNET_CONFIGURATION_create();
+    nodes[num_nodes-1].index_node = num_nodes-1;
+    if (GNUNET_OK != GNUNET_CONFIGURATION_load (nodes[num_nodes-1].conf, filename))
+    {
+      FPRINTF (stderr, "Failed loading config `%s'\n", filename);
+      return GNUNET_SYSERR;
+    }
+    return GNUNET_NO;
+  }
+  else
+  {
+    /* Continue iteration */
+    return GNUNET_OK;
+  }
+}
+
+/**
+ * @brief Iterates over filenames in testbed directory.
+ *
+ * Implements #GNUNET_FileNameCallback
+ *
+ * Checks if the file is a directory for a testbed node
+ * and counts the nodes.
+ *
+ * @param cls counter of nodes
+ * @param filename full path of the file in testbed
+ *
+ * @return status whether to continue iteration
+ */
+static int
+iter_testbed_path (void *cls,
+                   const char *filename)
+{
+  unsigned index_node;
+
+  GNUNET_assert (NULL != filename);
+  if (1 == SSCANF (GNUNET_STRINGS_get_short_name (filename),
+                  "%u",
+                  &index_node))
+  {
+    if (-1 == GNUNET_DISK_directory_scan (filename,
+                                          iter_check_config,
+                                          NULL))
+    {
+      /* This is probably no directory for a testbed node
+       * Go on with iteration */
+      return GNUNET_OK;
+    }
+    return GNUNET_OK;
+  }
+  return GNUNET_OK;
+}
+
+/**
+ * @brief Count the number of nodes running in the testbed
+ *
+ * @param path_testbed path to the testbed data
+ *
+ * @return number of running nodes
+ */
+static int
+discover_testbed_nodes (const char *path_testbed)
+{
+  int num_dir_entries;
+
+  num_dir_entries = GNUNET_DISK_directory_scan (path_testbed,
+                                                iter_testbed_path,
+                                                NULL);
+  if (-1 == num_dir_entries)
+  {
+    FPRINTF (stderr,
+            "Failure during scanning directory `%s'\n",
+            path_testbed);
+    return -1;
+  }
+  return 0;
+}
 
 /**
  * Main function that will be run by the scheduler.
@@ -361,8 +724,34 @@ run (void *cls,
 					   "PORT",
 					   remote_port);
   }
-  GNUNET_SCHEDULER_add_now (&main_task,
-			    c);
+  if (NULL == path_testbed)
+  {
+    values = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_NO);
+    GNUNET_array_grow (nodes, num_nodes, 1);
+    nodes[0].index_node = 0;
+    nodes[0].conf = c;
+    GNUNET_SCHEDULER_add_now (&main_task, &nodes[0].index_node);
+  }
+  else
+  {
+    if (GNUNET_YES == watch)
+    {
+      printf (_("Not able to watch testbed nodes (yet - feel free to implement)\n"));
+      ret = 1;
+      return;
+    }
+    values = GNUNET_CONTAINER_multihashmap_create (4, GNUNET_NO);
+    if (-1 == discover_testbed_nodes (path_testbed))
+    {
+      return;
+    }
+    /* For each config/node collect statistics */
+    for (unsigned i = 0; i < num_nodes; i++)
+    {
+      GNUNET_SCHEDULER_add_now (&main_task,
+              &nodes[i].index_node);
+    }
+  }
 }
 
 
@@ -394,6 +783,12 @@ main (int argc, char *const *argv)
                                  gettext_noop ("limit output to the given SUBSYSTEM"),
                                  &subsystem),
 
+    GNUNET_GETOPT_option_filename ('t',
+                                  "testbed",
+                                  "TESTBED",
+                                  gettext_noop ("path to the folder containing the testbed data"),
+                                  &path_testbed),
+
     GNUNET_GETOPT_option_flag ('q',
                                   "quiet",
                                   gettext_noop ("just print the statistics value"),