Various plugins: Convert more plugins to use "derive" instead of "counter".

[collectd.git] / src / nginx.c

diff --git a/src/nginx.c b/src/nginx.c
index 283e8f6..1cb7a90 100644 (file)
--- a/src/nginx.c
+++ b/src/nginx.c
@@ -1,6 +1,7 @@
 /**
  * collectd - src/nginx.c
- * Copyright (C) 2006,2007  Florian octo Forster
+ * Copyright (C) 2006-2010  Florian octo Forster
+ * Copyright (C) 2008       Sebastian Harl
  *
  * 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
@@ -17,7 +18,8 @@
  * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  *
  * Authors:
- *   Florian octo Forster <octo at verplant.org>
+ *   Florian octo Forster <octo at collectd.org>
+ *   Sebastian Harl <sh at tokkee.org>
  **/
 
 #include "collectd.h"
@@ -36,10 +38,9 @@ static char *cacert      = NULL;
 
 static CURL *curl = NULL;
 
-#define ABUFFER_SIZE 16384
-static char nginx_buffer[ABUFFER_SIZE];
-static int  nginx_buffer_len = 0;
-static char nginx_curl_error[CURL_ERROR_SIZE];
+static char   nginx_buffer[16384];
+static size_t nginx_buffer_len = 0;
+static char   nginx_curl_error[CURL_ERROR_SIZE];
 
 static const char *config_keys[] =
 {
@@ -52,21 +53,24 @@ static const char *config_keys[] =
 };
 static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
 
-static size_t nginx_curl_callback (void *buf, size_t size, size_t nmemb, void *stream)
+static size_t nginx_curl_callback (void *buf, size_t size, size_t nmemb,
+    void __attribute__((unused)) *stream)
 {
   size_t len = size * nmemb;
 
-  if ((nginx_buffer_len + len) >= ABUFFER_SIZE)
+  /* Check if the data fits into the memory. If not, truncate it. */
+  if ((nginx_buffer_len + len) >= sizeof (nginx_buffer))
   {
-    len = (ABUFFER_SIZE - 1) - nginx_buffer_len;
+    assert (sizeof (nginx_buffer) > nginx_buffer_len);
+    len = (sizeof (nginx_buffer) - 1) - nginx_buffer_len;
   }
 
   if (len <= 0)
     return (len);
 
-  memcpy (nginx_buffer + nginx_buffer_len, (char *) buf, len);
+  memcpy (&nginx_buffer[nginx_buffer_len], buf, len);
   nginx_buffer_len += len;
-  nginx_buffer[nginx_buffer_len] = '\0';
+  nginx_buffer[nginx_buffer_len] = 0;
 
   return (len);
 }
@@ -122,7 +126,9 @@ static int init (void)
 
   if (user != NULL)
   {
-    if (snprintf (credentials, 1024, "%s:%s", user, pass == NULL ? "" : pass) >= 1024)
+    int status = ssnprintf (credentials, sizeof (credentials),
+       "%s:%s", user, pass == NULL ? "" : pass);
+    if ((status < 0) || ((size_t) status >= sizeof (credentials)))
     {
       ERROR ("nginx plugin: Credentials would have been truncated.");
       return (-1);
@@ -136,7 +142,9 @@ static int init (void)
     curl_easy_setopt (curl, CURLOPT_URL, url);
   }
 
-  if ((verify_peer == NULL) || (strcmp (verify_peer, "true") == 0))
+  curl_easy_setopt (curl, CURLOPT_FOLLOWLOCATION, 1);
+
+  if ((verify_peer == NULL) || IS_TRUE (verify_peer))
   {
     curl_easy_setopt (curl, CURLOPT_SSL_VERIFYPEER, 1);
   }
@@ -145,7 +153,7 @@ static int init (void)
     curl_easy_setopt (curl, CURLOPT_SSL_VERIFYPEER, 0);
   }
 
-  if ((verify_host == NULL) || (strcmp (verify_host, "true") == 0))
+  if ((verify_host == NULL) || IS_TRUE (verify_host))
   {
     curl_easy_setopt (curl, CURLOPT_SSL_VERIFYHOST, 2);
   }
@@ -170,24 +178,21 @@ static void submit (char *type, char *inst, long long value)
   if (strcmp (type, "nginx_connections") == 0)
     values[0].gauge = value;
   else if (strcmp (type, "nginx_requests") == 0)
-    values[0].counter = value;
+    values[0].derive = value;
   else
     return;
 
   vl.values = values;
   vl.values_len = 1;
-  vl.time = time (NULL);
   sstrncpy (vl.host, hostname_g, sizeof (vl.host));
   sstrncpy (vl.plugin, "nginx", sizeof (vl.plugin));
   sstrncpy (vl.plugin_instance, "", sizeof (vl.plugin_instance));
+  sstrncpy (vl.type, type, sizeof (vl.type));
 
   if (inst != NULL)
-  {
-    strncpy (vl.type_instance, inst, sizeof (vl.type_instance));
-    vl.type_instance[sizeof (vl.type_instance) - 1] = '\0';
-  }
+    sstrncpy (vl.type_instance, inst, sizeof (vl.type_instance));
 
-  plugin_dispatch_values (type, &vl);
+  plugin_dispatch_values (&vl);
 } /* void submit */
 
 static int nginx_read (void)