From efd4237b95192a905aeff57d7d865a8a3059f35e Mon Sep 17 00:00:00 2001
From: Florian Forster <octo@leeloo.lan.home.verplant.org>
Date: Mon, 5 Jul 2010 10:46:00 +0200
Subject: [PATCH] v5upgrade target: Implement handling of the "mysql_qcache"
 and "mysql_threads" types.

---
 src/target_v5upgrade.c | 115 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 115 insertions(+)

diff --git a/src/target_v5upgrade.c b/src/target_v5upgrade.c
index 670efce8..7fc0d421 100644
--- a/src/target_v5upgrade.c
+++ b/src/target_v5upgrade.c
@@ -99,6 +99,117 @@ static int v5_interface (const data_set_t *ds, value_list_t *vl) /* {{{ */
   return (FC_TARGET_CONTINUE);
 } /* }}} int v5_interface */
 
+/*
+ * MySQL query cache
+ *
+ * 4.* uses the "mysql_qcache" type which mixes different types of
+ * information. In 5.* this has been broken up.
+ */
+static int v5_mysql_qcache (const data_set_t *ds, value_list_t *vl) /* {{{ */
+{
+  value_list_t new_vl;
+  value_t new_value;
+
+  if (vl->values_len != 5)
+    return (FC_TARGET_STOP);
+
+  /* Copy everything: Time, interval, host, ... */
+  memcpy (&new_vl, vl, sizeof (new_vl));
+
+  /* Reset data we can't simply copy */
+  new_vl.values = &new_value;
+  new_vl.values_len = 1;
+  new_vl.meta = NULL;
+
+  /* Change the type to "cache_result" */
+  sstrncpy (new_vl.type, "cache_result", sizeof (new_vl.type));
+
+  /* Dispatch new value lists instead of this one */
+  new_vl.values[0].derive = (derive_t) vl->values[0].counter;
+  sstrncpy (new_vl.type_instance, "qcache-hits",
+      sizeof (new_vl.type_instance));
+  plugin_dispatch_values (&new_vl);
+
+  new_vl.values[0].derive = (derive_t) vl->values[1].counter;
+  sstrncpy (new_vl.type_instance, "qcache-inserts",
+      sizeof (new_vl.type_instance));
+  plugin_dispatch_values (&new_vl);
+
+  new_vl.values[0].derive = (derive_t) vl->values[2].counter;
+  sstrncpy (new_vl.type_instance, "qcache-not_cached",
+      sizeof (new_vl.type_instance));
+  plugin_dispatch_values (&new_vl);
+
+  new_vl.values[0].derive = (derive_t) vl->values[3].counter;
+  sstrncpy (new_vl.type_instance, "qcache-prunes",
+      sizeof (new_vl.type_instance));
+  plugin_dispatch_values (&new_vl);
+
+  /* The last data source is a gauge value, so we have to use a different type
+   * here. */
+  new_vl.values[0].gauge = vl->values[4].gauge;
+  sstrncpy (new_vl.type, "cache_size", sizeof (new_vl.type));
+  sstrncpy (new_vl.type_instance, "qcache",
+      sizeof (new_vl.type_instance));
+  plugin_dispatch_values (&new_vl);
+
+  /* Abort processing */
+  return (FC_TARGET_STOP);
+} /* }}} int v5_mysql_qcache */
+
+/*
+ * MySQL thread count
+ *
+ * 4.* uses the "mysql_threads" type which mixes different types of
+ * information. In 5.* this has been broken up.
+ */
+static int v5_mysql_threads (const data_set_t *ds, value_list_t *vl) /* {{{ */
+{
+  value_list_t new_vl;
+  value_t new_value;
+
+  if (vl->values_len != 4)
+    return (FC_TARGET_STOP);
+
+  /* Copy everything: Time, interval, host, ... */
+  memcpy (&new_vl, vl, sizeof (new_vl));
+
+  /* Reset data we can't simply copy */
+  new_vl.values = &new_value;
+  new_vl.values_len = 1;
+  new_vl.meta = NULL;
+
+  /* Change the type to "threads" */
+  sstrncpy (new_vl.type, "threads", sizeof (new_vl.type));
+
+  /* Dispatch new value lists instead of this one */
+  new_vl.values[0].gauge = vl->values[0].gauge;
+  sstrncpy (new_vl.type_instance, "running",
+      sizeof (new_vl.type_instance));
+  plugin_dispatch_values (&new_vl);
+
+  new_vl.values[0].gauge = vl->values[1].gauge;
+  sstrncpy (new_vl.type_instance, "connected",
+      sizeof (new_vl.type_instance));
+  plugin_dispatch_values (&new_vl);
+
+  new_vl.values[0].gauge = vl->values[2].gauge;
+  sstrncpy (new_vl.type_instance, "cached",
+      sizeof (new_vl.type_instance));
+  plugin_dispatch_values (&new_vl);
+
+  /* The last data source is a counter value, so we have to use a different
+   * type here. */
+  new_vl.values[0].derive = (derive_t) vl->values[3].counter;
+  sstrncpy (new_vl.type, "total_threads", sizeof (new_vl.type));
+  sstrncpy (new_vl.type_instance, "created",
+      sizeof (new_vl.type_instance));
+  plugin_dispatch_values (&new_vl);
+
+  /* Abort processing */
+  return (FC_TARGET_STOP);
+} /* }}} int v5_mysql_threads */
+
 static int v5_destroy (void **user_data) /* {{{ */
 {
   return (0);
@@ -121,6 +232,10 @@ static int v5_invoke (const data_set_t *ds, value_list_t *vl, /* {{{ */
     return (v5_df (ds, vl));
   else if (strcmp ("interface", vl->plugin) == 0)
     return (v5_interface (ds, vl));
+  else if (strcmp ("mysql_qcache", vl->type) == 0)
+    return (v5_mysql_qcache (ds, vl));
+  else if (strcmp ("mysql_threads", vl->type) == 0)
+    return (v5_mysql_threads (ds, vl));
 
   return (FC_TARGET_CONTINUE);
 } /* }}} int v5_invoke */
-- 
2.11.0