hddtemp plugin: Converted to the new plugin interface.

diff --git a/src/hddtemp.c b/src/hddtemp.c
index 80b3419..3f37d50 100644 (file)
--- a/src/hddtemp.c
+++ b/src/hddtemp.c
@@ -32,13 +32,17 @@
 #include "configfile.h"
 #include "utils_debug.h"
 
-#define MODULE_NAME "hddtemp"
-
-#include <netdb.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <netinet/tcp.h>
-#include <libgen.h> /* for basename */
+#if HAVE_NETDB_H && HAVE_SYS_SOCKET_H && HAVE_NETINET_IN_H \
+       && HAVE_NETINET_TCP_H && HAVE_LIBGEN_H
+# include <netdb.h>
+# include <sys/socket.h>
+# include <netinet/in.h>
+# include <netinet/tcp.h>
+# include <libgen.h> /* for basename */
+# define HDDTEMP_HAVE_READ 1
+#else
+# define HDDTEMP_HAVE_READ 0
+#endif
 
 #if HAVE_LINUX_MAJOR_H
 # include <linux/major.h>
@@ -47,20 +51,18 @@
 #define HDDTEMP_DEF_HOST "127.0.0.1"
 #define HDDTEMP_DEF_PORT "7634"
 
-/* BUFFER_SIZE
-   Size of the buffer we use to receive from the hddtemp daemon. */
-#define BUFFER_SIZE 1024
-
-static char *filename_format = "hddtemp-%s.rrd";
+static data_source_t data_source_temperature[1] =
+{
+       {"value", DS_TYPE_GAUGE, -273.15, NAN}
+};
 
-static char *ds_def[] =
+static data_set_t temperature_ds =
 {
-       "DS:value:GAUGE:"COLLECTD_HEARTBEAT":U:U",
-       NULL
+       "temperature", 1, data_source_temperature
 };
-static int ds_num = 1;
 
-static char *config_keys[] =
+#if HDDTEMP_HAVE_READ
+static const char *config_keys[] =
 {
        "Host",
        "Port",
@@ -211,7 +213,7 @@ static int hddtemp_query_daemon (char *buffer, int buffer_size)
        return (0);
 }
 
-static int hddtemp_config (char *key, char *value)
+static int hddtemp_config (const char *key, const char *value)
 {
        if (strcasecmp (key, "host") == 0)
        {
@@ -236,11 +238,11 @@ static int hddtemp_config (char *key, char *value)
 /* In the init-function we initialize the `hddname_t' list used to translate
  * disk-names. Under Linux that's done using `/proc/partitions'. Under other
  * operating-systems, it's not done at all. */
-static void hddtemp_init (void)
+static int hddtemp_init (void)
 {
 #if KERNEL_LINUX
        FILE *fh;
-       char buf[BUFFER_SIZE];
+       char buf[1024];
        int buflen;
 
        char *fields[16];
@@ -267,7 +269,7 @@ static void hddtemp_init (void)
        {
                DBG ("Looking at /proc/partitions...");
 
-               while (fgets (buf, BUFFER_SIZE, fh) != NULL)
+               while (fgets (buf, sizeof (buf), fh) != NULL)
                {
                        /* Delete trailing newlines */
                        buflen = strlen (buf);
@@ -380,22 +382,9 @@ static void hddtemp_init (void)
                DBG ("Could not open /proc/partitions: %s",
                                strerror (errno));
 #endif /* KERNEL_LINUX */
-}
 
-static void hddtemp_write (char *host, char *inst, char *val)
-{
-       char filename[BUFFER_SIZE];
-       int status;
-
-       /* construct filename */
-       status = snprintf (filename, BUFFER_SIZE, filename_format, inst);
-       if (status < 1)
-               return;
-       else if (status >= BUFFER_SIZE)
-               return;
-
-       rrd_update_file (host, filename, val, ds_def, ds_num);
-}
+       return (0);
+} /* int hddtemp_init */
 
 /*
  * hddtemp_get_name
@@ -432,55 +421,35 @@ static char *hddtemp_get_name (char *drive)
        return (ret);
 }
 
-static void hddtemp_submit (char *inst, double temperature)
+static void hddtemp_submit (char *type_instance, double value)
 {
-       char buf[BUFFER_SIZE];
+       value_t values[1];
+       value_list_t vl = VALUE_LIST_INIT;
+
+       values[0].gauge = value;
 
-       if (snprintf (buf, BUFFER_SIZE, "%u:%.3f", (unsigned int) curtime, temperature)
-            >= BUFFER_SIZE)
-               return;
+       vl.values = values;
+       vl.values_len = 1;
+       vl.time = time (NULL);
+       strcpy (vl.host, hostname);
+       strcpy (vl.plugin, "hddtemp");
+       strncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
 
-       plugin_submit (MODULE_NAME, inst, buf);
+       plugin_dispatch_values ("temperature", &vl);
 }
 
-static void hddtemp_read (void)
+static int hddtemp_read (void)
 {
-       char buf[BUFFER_SIZE];
+       char buf[1024];
        char *fields[128];
        char *ptr;
        int num_fields;
        int num_disks;
        int i;
 
-       static int wait_time = 1;
-       static int wait_left = 0;
-
-       if (wait_left >= 10)
-       {
-               wait_left -= 10;
-               return;
-       }
-
        /* get data from daemon */
-       if (hddtemp_query_daemon (buf, BUFFER_SIZE) < 0)
-       {
-               /* This limit is reached in log2(86400) =~ 17 steps. Since
-                * there is a 2^n seconds wait between each step it will need
-                * roughly one day to reach this limit. -octo */
-               
-               wait_time *= 2;
-               if (wait_time > 86400)
-                       wait_time = 86400;
-
-               wait_left = wait_time;
-
-               return;
-       }
-       else
-       {
-               wait_time = 1;
-               wait_left = 0;
-       }
+       if (hddtemp_query_daemon (buf, sizeof (buf)) < 0)
+               return (-1);
 
        /* NB: strtok will eat up "||" and leading "|"'s */
        num_fields = 0;
@@ -525,14 +494,21 @@ static void hddtemp_read (void)
                        hddtemp_submit (name, temperature);
                }
        }
-}
+       
+       return (0);
+} /* int hddtemp_read */
+#endif /* HDDTEMP_HAVE_READ */
 
 /* module_register
    Register collectd plugin. */
 void module_register (void)
 {
-       plugin_register (MODULE_NAME, hddtemp_init, hddtemp_read, hddtemp_write);
-       cf_register (MODULE_NAME, hddtemp_config, config_keys, config_keys_num);
+       plugin_register_data_set (&temperature_ds);
+       
+#if HDDTEMP_HAVE_READ
+       plugin_register_config ("hddtemp", hddtemp_config,
+                       config_keys, config_keys_num);
+       plugin_register_init ("hddtemp", hddtemp_init);
+       plugin_register_read ("hddtemp", hddtemp_read);
+#endif /* HDDTEMP_HAVE_READ */
 }
-
-#undef MODULE_NAME