X-Git-Url: https://git.verplant.org/?a=blobdiff_plain;f=src%2Fwrite_graphite.c;h=504ea9d45fa2e55534e1fdc62fec4a0aab01db73;hb=ecbcaadde7dff838f09dfb04c7eb90f126e35abf;hp=80f52d38284a58d07eb606389616d27ff2fc2a33;hpb=498a0dcd09770815196bdfe3fb2b48c4b2b168d9;p=collectd.git

diff --git a/src/write_graphite.c b/src/write_graphite.c
index 80f52d38..504ea9d4 100644
--- a/src/write_graphite.c
+++ b/src/write_graphite.c
@@ -36,6 +36,7 @@
   *     Host "localhost"
   *     Port "2003"
   *     Protocol "udp"
+  *     LogSendErrors true
   *     Prefix "collectd"
   *   </Carbon>
   * </Plugin>
@@ -66,7 +67,11 @@
 #endif
 
 #ifndef WG_DEFAULT_PROTOCOL
-# define WG_DEFAULT_PROTOCOL "udp"
+# define WG_DEFAULT_PROTOCOL "tcp"
+#endif
+
+#ifndef WG_DEFAULT_LOG_SEND_ERRORS
+# define WG_DEFAULT_LOG_SEND_ERRORS 1
 #endif
 
 #ifndef WG_DEFAULT_ESCAPE
@@ -90,6 +95,7 @@ struct wg_callback
     char    *node;
     char    *service;
     char    *protocol;
+    _Bool   log_send_errors;
     char    *prefix;
     char    *postfix;
     char     escape_char;
@@ -124,11 +130,15 @@ static int wg_send_buffer (struct wg_callback *cb)
     status = swrite (cb->sock_fd, cb->send_buf, strlen (cb->send_buf));
     if (status < 0)
     {
-        char errbuf[1024];
-        ERROR ("write_graphite plugin: send to %s:%s (%s) failed with status %zi (%s)",
-                cb->node, cb->service, cb->protocol,
-                status, sstrerror (errno, errbuf, sizeof (errbuf)));
+        const char *protocol = cb->protocol ? cb->protocol : WG_DEFAULT_PROTOCOL;
 
+        if (cb->log_send_errors)
+        {
+            char errbuf[1024];
+            ERROR ("write_graphite plugin: send to %s:%s (%s) failed with status %zi (%s)",
+                    cb->node, cb->service, protocol,
+                    status, sstrerror (errno, errbuf, sizeof (errbuf)));
+        }
 
         close (cb->sock_fd);
         cb->sock_fd = -1;
@@ -182,6 +192,8 @@ static int wg_callback_init (struct wg_callback *cb)
     const char *service = cb->service ? cb->service : WG_DEFAULT_SERVICE;
     const char *protocol = cb->protocol ? cb->protocol : WG_DEFAULT_PROTOCOL;
 
+    char connerr[1024] = "";
+
     if (cb->sock_fd > 0)
         return (0);
 
@@ -193,14 +205,8 @@ static int wg_callback_init (struct wg_callback *cb)
 
     if (0 == strcasecmp ("tcp", protocol))
         ai_hints.ai_socktype = SOCK_STREAM;
-    else if (0 == strcasecmp ("udp", protocol))
-        ai_hints.ai_socktype = SOCK_DGRAM;
     else
-    {
-        ERROR ("write_graphite plugin: unknown protocol (%s)",
-                protocol);
-        return (-1);
-    }
+        ai_hints.ai_socktype = SOCK_DGRAM;
 
     ai_list = NULL;
 
@@ -217,12 +223,19 @@ static int wg_callback_init (struct wg_callback *cb)
     {
         cb->sock_fd = socket (ai_ptr->ai_family, ai_ptr->ai_socktype,
                 ai_ptr->ai_protocol);
-        if (cb->sock_fd < 0)
+        if (cb->sock_fd < 0) {
+            char errbuf[1024];
+            snprintf (connerr, sizeof (connerr), "failed to open socket: %s",
+                    sstrerror (errno, errbuf, sizeof (errbuf)));
             continue;
+        }
 
         status = connect (cb->sock_fd, ai_ptr->ai_addr, ai_ptr->ai_addrlen);
         if (status != 0)
         {
+            char errbuf[1024];
+            snprintf (connerr, sizeof (connerr), "failed to connect to remote "
+                    "host: %s", sstrerror (errno, errbuf, sizeof (errbuf)));
             close (cb->sock_fd);
             cb->sock_fd = -1;
             continue;
@@ -235,12 +248,12 @@ static int wg_callback_init (struct wg_callback *cb)
 
     if (cb->sock_fd < 0)
     {
-        char errbuf[1024];
+        if (connerr[0] == '\0')
+            /* this should not happen but try to get a message anyway */
+            sstrerror (errno, connerr, sizeof (connerr));
         c_complain (LOG_ERR, &cb->init_complaint,
-                "write_graphite plugin: Connecting to %s:%s via %s failed. "
-                "The last error was: %s", node, service, protocol,
-                sstrerror (errno, errbuf, sizeof (errbuf)));
-        close (cb->sock_fd);
+                  "write_graphite plugin: Connecting to %s:%s via %s failed. "
+                  "The last error was: %s", node, service, protocol, connerr);
         return (-1);
     }
     else
@@ -268,8 +281,11 @@ static void wg_callback_free (void *data)
 
     wg_flush_nolock (/* timeout = */ 0, cb);
 
-    close(cb->sock_fd);
-    cb->sock_fd = -1;
+    if (cb->sock_fd >= 0)
+    {
+        close (cb->sock_fd);
+        cb->sock_fd = -1;
+    }
 
     sfree(cb->name);
     sfree(cb->node);
@@ -387,12 +403,9 @@ static int wg_write_messages (const data_set_t *ds, const value_list_t *vl,
         return (status);
 
     /* Send the message to graphite */
-    wg_send_message (buffer, cb);
-    if (status != 0)
-    {
-        /* An error message has already been printed. */
+    status = wg_send_message (buffer, cb);
+    if (status != 0) /* error message has been printed already. */
         return (status);
-    }
 
     return (0);
 } /* int wg_write_messages */
@@ -450,6 +463,7 @@ static int wg_config_node (oconfig_item_t *ci)
     user_data_t user_data;
     char callback_name[DATA_MAX_NAME_LEN];
     int i;
+    int status = 0;
 
     cb = malloc (sizeof (*cb));
     if (cb == NULL)
@@ -463,6 +477,7 @@ static int wg_config_node (oconfig_item_t *ci)
     cb->node = NULL;
     cb->service = NULL;
     cb->protocol = NULL;
+    cb->log_send_errors = WG_DEFAULT_LOG_SEND_ERRORS;
     cb->prefix = NULL;
     cb->postfix = NULL;
     cb->escape_char = WG_DEFAULT_ESCAPE;
@@ -471,7 +486,7 @@ static int wg_config_node (oconfig_item_t *ci)
     /* FIXME: Legacy configuration syntax. */
     if (strcasecmp ("Carbon", ci->key) != 0)
     {
-        int status = cf_util_get_string (ci, &cb->name);
+        status = cf_util_get_string (ci, &cb->name);
         if (status != 0)
         {
             wg_callback_free (cb);
@@ -491,7 +506,19 @@ static int wg_config_node (oconfig_item_t *ci)
         else if (strcasecmp ("Port", child->key) == 0)
             cf_util_get_service (child, &cb->service);
         else if (strcasecmp ("Protocol", child->key) == 0)
+        {
             cf_util_get_string (child, &cb->protocol);
+
+            if (strcasecmp ("UDP", cb->protocol) != 0 &&
+                strcasecmp ("TCP", cb->protocol) != 0)
+            {
+                ERROR ("write_graphite plugin: Unknown protocol (%s)",
+                        cb->protocol);
+                status = -1;
+            }
+        }
+        else if (strcasecmp ("LogSendErrors", child->key) == 0)
+            cf_util_get_boolean (child, &cb->log_send_errors);
         else if (strcasecmp ("Prefix", child->key) == 0)
             cf_util_get_string (child, &cb->prefix);
         else if (strcasecmp ("Postfix", child->key) == 0)
@@ -511,7 +538,17 @@ static int wg_config_node (oconfig_item_t *ci)
         {
             ERROR ("write_graphite plugin: Invalid configuration "
                         "option: %s.", child->key);
+            status = -1;
         }
+
+        if (status != 0)
+            break;
+    }
+
+    if (status != 0)
+    {
+        wg_callback_free (cb);
+        return (status);
     }
 
     /* FIXME: Legacy configuration syntax. */