initial commit of volume.c

diff --git a/src/volume.c b/src/volume.c
new file mode 100644 (file)
index 0000000..99a1434
--- /dev/null
+++ b/src/volume.c
@@ -0,0 +1,77 @@
+/**
+ * collectd - src/volume.c
+ * Copyright (C) 2013       Chad Malfait
+ *
+ * This program 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; only version 2 of the License is applicable.
+ *
+ * This program 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 this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ *
+ * Authors:
+ *   Chad Malfait <malfaitc at yahoo.com>
+ **/
+
+#include "collectd.h"
+#include "common.h"
+#include "plugin.h"
+#include <lvm2app.h>
+
+#define GB (1024*1024*1024)
+#define MB (1024*1024)
+
+static void volume_submit(const char *vol_name, gauge_t size, gauge_t free)
+{
+    value_t values[2];
+    value_list_t vl = VALUE_LIST_INIT;
+
+    values[0].gauge = size;
+    values[1].gauge = free;
+
+    vl.values = values;
+    vl.values_len = STATIC_ARRAY_SIZE (values);
+    sstrncpy(vl.host, hostname_g, sizeof (vl.host));
+    sstrncpy(vl.plugin, "volume", sizeof (vl.plugin));
+    sstrncpy(vl.type, vol_name, sizeof (vl.type));
+
+    plugin_dispatch_values (&vl);
+}
+
+static int volume_read(void)
+{
+    lvm_t lvm;
+    vg_t vg;
+    struct dm_list *vgnames;
+    struct lvm_str_list *strl;
+
+    lvm = lvm_init(NULL);
+    if (!lvm) {
+        fprintf(stderr, "lvm_init() failed\n");
+    }
+
+    vgnames = lvm_list_vg_names(lvm);
+    if (!vgnames) {
+        fprintf(stderr, "lvm_list_vg_names() failed\n");
+    }
+
+    dm_list_iterate_items(strl, vgnames) {
+        vg = lvm_vg_open(lvm, strl->str, "r", 0);
+        volume_submit(strl->str, (float)lvm_vg_get_size(vg)/GB, (float)lvm_vg_get_free_size(vg)/GB);
+        lvm_vg_close(vg);
+    }
+
+    lvm_quit(lvm);
+    return (0);
+}
+
+void module_register(void)
+{
+       plugin_register_read("volume", volume_read);
+} /* void module_register */