tokyotyrant plugin: Lookup service names (port names) and minor fixes.

diff --git a/src/tokyotyrant.c b/src/tokyotyrant.c
index c3076f5..26366c9 100644 (file)
--- a/src/tokyotyrant.c
+++ b/src/tokyotyrant.c
@@ -24,6 +24,11 @@
 #include "common.h"
 #include "utils_cache.h"
 #include "utils_parse_option.h"
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netdb.h>
+
 #include <tcrdb.h>
 
 #define DEFAULT_HOST "127.0.0.1"
@@ -41,6 +46,56 @@ static char *config_port = NULL;
 
 static TCRDB *rdb = NULL;
 
+static int parse_service_name (const char *service_name)
+{
+       struct addrinfo *ai_list;
+       struct addrinfo *ai_ptr;
+       struct addrinfo ai_hints;
+       int status;
+       int service_number;
+
+       ai_list = NULL;
+       memset (&ai_hints, 0, sizeof (ai_hints));
+       ai_hints.ai_family = AF_UNSPEC;
+
+       status = getaddrinfo (/* node = */ NULL, service_name,
+                       &ai_hints, &ai_list);
+       if (status != 0)
+       {
+               ERROR ("tokyotyrant plugin: getaddrinfo failed: %s",
+                               gai_strerror (status));
+               return (-1);
+       }
+
+       service_number = -1;
+       for (ai_ptr = ai_list; ai_ptr != NULL; ai_ptr = ai_ptr->ai_next)
+       {
+               if (ai_ptr->ai_family == AF_INET)
+               {
+                       struct sockaddr_in *sa;
+
+                       sa = (void *) ai_ptr->ai_addr;
+                       service_number = (int) ntohs (sa->sin_port);
+               }
+               else if (ai_ptr->ai_family == AF_INET6)
+               {
+                       struct sockaddr_in6 *sa;
+
+                       sa = (void *) ai_ptr->ai_addr;
+                       service_number = (int) ntohs (sa->sin6_port);
+               }
+
+               if ((service_number > 0) && (service_number <= 65535))
+                       break;
+       }
+
+       freeaddrinfo (ai_list);
+
+       if ((service_number > 0) && (service_number <= 65535))
+               return (service_number);
+       return (-1);
+} /* int parse_service_name */
+
 static int tt_config (const char *key, const char *value)
 {
        if (strcasecmp ("Host", key) == 0)
@@ -104,9 +159,41 @@ static void tt_submit (gauge_t val, const char* type)
        plugin_dispatch_values (&vl);
 }
 
+static void tt_open_db (void)
+{
+       char* host = NULL;
+       int   port = DEFAULT_PORT;
+
+       if (rdb != NULL)
+               return;
+
+       host = ((config_host != NULL) ? config_host : DEFAULT_HOST);
+
+       if (config_port != NULL)
+       {
+               port = parse_service_name (config_port);
+               if (port <= 0)
+                       return;
+       }
+
+       rdb = tcrdbnew ();
+       if (rdb == NULL)
+               return;
+       else if (!tcrdbopen(rdb, host, port))
+       {
+               printerr ();
+               tcrdbdel (rdb);
+               rdb = NULL;
+       }
+} /* void tt_open_db */
+
 static int tt_read (void) {
        gauge_t rnum, size;
 
+       tt_open_db ();
+       if (rdb == NULL)
+               return (-1);
+
        rnum = tcrdbrnum(rdb);
        tt_submit (rnum, "records");
 
@@ -116,41 +203,24 @@ static int tt_read (void) {
        return (0);
 }
 
-static int tt_init(void) 
-{
-        char* host = NULL;
-        int   port;
-
-        host = ((config_host != NULL) ? config_host : DEFAULT_HOST);
-        port = ((config_port != NULL) ? atoi(config_port) : DEFAULT_PORT);
-
-       rdb = tcrdbnew();
-
-       if (!tcrdbopen(rdb, host, port))
-       {
-               printerr ();
-               tcrdbdel (rdb);
-               return (1);
-       }
-
-        return(0);
-}
-
 static int tt_shutdown(void)
 {
-        sfree(config_host);
-        sfree(config_port);
+       sfree(config_host);
+       sfree(config_port);
 
-       if (!tcrdbclose(rdb))
+       if (rdb != NULL)
        {
-               printerr ();
+               if (!tcrdbclose(rdb))
+               {
+                       printerr ();
+                       tcrdbdel (rdb);
+                       return (1);
+               }
                tcrdbdel (rdb);
-               return (1);
+               rdb = NULL;
        }
 
-        tcrdbdel (rdb);
-
-        return(0);
+       return(0);
 }
 
 void module_register (void)
@@ -158,8 +228,7 @@ void module_register (void)
        plugin_register_config("tokyotyrant", tt_config,
                        config_keys, config_keys_num);
        plugin_register_read("tokyotyrant", tt_read);
-        plugin_register_init("tokyotyrant", tt_init);
-        plugin_register_shutdown("tokyotyrant", tt_shutdown);
+       plugin_register_shutdown("tokyotyrant", tt_shutdown);
 }
 
 /* vim: set sw=8 ts=8 tw=78 : */