X-Git-Url: https://git.octo.it/?p=collectd.git;a=blobdiff_plain;f=src%2Flibvirt.c;h=1f6287923fae47fbcd48bee83c660f66352da35c;hp=5acff29a578cd609dff2ba7de65bab1e13c4fc3b;hb=61a1fa91ba73e4fe3a34949f77c5f017056f2b7a;hpb=10075e6fe3c384b73c2dd398a1435f8d10e56654

diff --git a/src/libvirt.c b/src/libvirt.c
index 5acff29a..1f628792 100644
--- a/src/libvirt.c
+++ b/src/libvirt.c
@@ -24,6 +24,7 @@
 #include "plugin.h"
 #include "configfile.h"
 #include "utils_ignorelist.h"
+#include "utils_complain.h"
 
 #include <libvirt/libvirt.h>
 #include <libvirt/virterror.h>
@@ -49,6 +50,8 @@ static const char *config_keys[] = {
 
 /* Connection. */
 static virConnectPtr conn = 0;
+static char *conn_string = NULL;
+static c_complain_t conn_complain = C_COMPLAIN_INIT_STATIC;
 
 /* Seconds between list refreshes, 0 disables completely. */
 static int interval = 60;
@@ -153,15 +156,13 @@ lv_config (const char *key, const char *value)
         il_interface_devices = ignorelist_create (1);
 
     if (strcasecmp (key, "Connection") == 0) {
-        if (conn != 0) {
-            ERROR ("Connection may only be given once in config file");
-            return 1;
-        }
-        conn = virConnectOpenReadOnly (value);
-        if (!conn) {
-            VIRT_ERROR (NULL, "connection failed");
+        char *tmp = strdup (value);
+        if (tmp == NULL) {
+            ERROR ("libvirt plugin: Connection strdup failed.");
             return 1;
         }
+        sfree (conn_string);
+        conn_string = tmp;
         return 0;
     }
 
@@ -186,9 +187,7 @@ lv_config (const char *key, const char *value)
     }
 
     if (strcasecmp (key, "IgnoreSelected") == 0) {
-        if (strcasecmp (value, "True") == 0 ||
-            strcasecmp (value, "Yes") == 0 ||
-            strcasecmp (value, "On") == 0)
+        if (IS_TRUE (value))
         {
             ignorelist_set_invert (il_domains, 0);
             ignorelist_set_invert (il_block_devices, 0);
@@ -253,19 +252,29 @@ lv_read (void)
     int i;
 
     if (conn == NULL) {
-        ERROR ("libvirt plugin: Not connected. Use Connection in "
-                "config file to supply connection URI.  For more information "
-                "see <http://libvirt.org/uri.html>");
-        return -1;
+        /* `conn_string == NULL' is acceptable. */
+        conn = virConnectOpenReadOnly (conn_string);
+        if (conn == NULL) {
+            c_complain (LOG_ERR, &conn_complain,
+                    "libvirt plugin: Unable to connect: "
+                    "virConnectOpenReadOnly failed.");
+            return -1;
+        }
     }
+    c_release (LOG_NOTICE, &conn_complain,
+            "libvirt plugin: Connection established.");
 
     time (&t);
 
     /* Need to refresh domain or device lists? */
     if ((last_refresh == (time_t) 0) ||
             ((interval > 0) && ((last_refresh + interval) <= t))) {
-        if (refresh_lists () != 0)
+        if (refresh_lists () != 0) {
+            if (conn != NULL)
+                virConnectClose (conn);
+            conn = NULL;
             return -1;
+        }
         last_refresh = t;
     }
 
@@ -286,21 +295,31 @@ lv_read (void)
     for (i = 0; i < nr_domains; ++i) {
         virDomainInfo info;
         virVcpuInfoPtr vinfo = NULL;
+        int status;
         int j;
 
-        if (virDomainGetInfo (domains[i], &info) != 0)
+        status = virDomainGetInfo (domains[i], &info);
+        if (status != 0)
+        {
+            ERROR ("libvirt plugin: virDomainGetInfo failed with status %i.",
+                    status);
             continue;
+        }
 
         cpu_submit (info.cpuTime, t, domains[i], "virt_cpu_total");
 
-        vinfo = malloc (info.nrVirtCpu * sizeof vinfo[0]);
+        vinfo = malloc (info.nrVirtCpu * sizeof (vinfo[0]));
         if (vinfo == NULL) {
             ERROR ("libvirt plugin: malloc failed.");
             continue;
         }
 
-        if (virDomainGetVcpus (domains[i], vinfo, info.nrVirtCpu,
-                    NULL, 0) != 0) {
+        status = virDomainGetVcpus (domains[i], vinfo, info.nrVirtCpu,
+                /* cpu map = */ NULL, /* cpu map length = */ 0);
+        if (status < 0)
+        {
+            ERROR ("libvirt plugin: virDomainGetVcpus failed with status %i.",
+                    status);
             free (vinfo);
             continue;
         }
@@ -646,8 +665,6 @@ init_value_list (value_list_t *vl, time_t t, virDomainPtr dom)
     int i, n;
     const char *name;
     char uuid[VIR_UUID_STRING_BUFLEN];
-    char  *host_ptr;
-    size_t host_len;
 
     vl->time = t;
     vl->interval = interval_g;
@@ -655,8 +672,6 @@ init_value_list (value_list_t *vl, time_t t, virDomainPtr dom)
     sstrncpy (vl->plugin, "libvirt", sizeof (vl->plugin));
 
     vl->host[0] = '\0';
-    host_ptr = vl->host;
-    host_len = sizeof (vl->host);
 
     /* Construct the hostname field according to HostnameFormat. */
     for (i = 0; i < HF_MAX_FIELDS; ++i) {