Initial revision

git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@2 f882894a-f735-0410-b71e-b25c423dba1c

1 files changed, 321 insertions, 0 deletions

diff --git a/plugins/check_load.c b/plugins/check_load.c
new file mode 100644
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--- /dev/null
+++ b/plugins/check_load.c
@@ -0,0 +1,321 @@
+/******************************************************************************
+ *
+ * CHECK_LOAD.C
+ *
+ * Written by Felipe Gustavo de Almeida <galmeida@linux.ime.usp.br>
+ * License: GPL
+ * Command line: CHECK_LOAD <wload1> <cload1> <wload5> <cload5> <wload15> <cload15>
+ * First Written: 04/17/99 
+ *
+ * Modifications:
+ * 
+ * 05/18/1999 - Modified to work getloadavg where available, and use uptime
+ *              where neither proc or getloadavg are found.  Also use autoconf.
+ *                 mods by Karl DeBisschop (kdebiss@alum.mit.edu)
+ * 07/01/1999 - Added some #DEFINEs to allow compilation under NetBSD, as
+ *              suggested by Andy Doran.
+ *                 mods by Ethan Galstad (nagios@nagios.org)
+ * 07/17/1999 - Initialized la[] array to prevent NetBSD from complaining
+ *                 mods by Ethan Galstad (nagios@nagios.org)
+ * 08/18/1999 - Integrated some code with common plugin utilities
+ *                 mods by Ethan Galstad (nagios@nagios.org)
+ * $Date$
+ * Note: The load format is the same used by "uptime" and "w"
+ *
+ *****************************************************************************/
+
+#include "config.h"
+#include "common.h"
+#include "utils.h"
+
+#ifdef HAVE_SYS_LOADAVG_H
+#include <sys/loadavg.h>
+#endif
+
+/* needed for compilation under NetBSD, as suggested by Andy Doran */
+#ifndef LOADAVG_1MIN
+#define LOADAVG_1MIN    0
+#define LOADAVG_5MIN    1
+#define LOADAVG_15MIN   2
+#endif /* !defined LOADAVG_1MIN */
+
+#include "popen.h"
+#ifdef HAVE_PROC_LOADAVG
+
+#endif
+
+#define PROGNAME "check_load"
+
+int process_arguments (int argc, char **argv);
+int call_getopt (int argc, char **argv);
+int validate_arguments (void);
+void print_usage (void);
+void print_help (void);
+
+float wload1 = -1, wload5 = -1, wload15 = -1;
+float cload1 = -1, cload5 = -1, cload15 = -1;
+
+int
+main (int argc, char **argv)
+{
+#if HAVE_GETLOADAVG==1
+        int result;
+        double la[3] = { 0.0, 0.0, 0.0 };       /* NetBSD complains about unitialized arrays */
+#elif HAVE_PROC_LOADAVG==1
+        FILE *fp;
+        char input_buffer[MAX_INPUT_BUFFER];
+        char *tmp_ptr;
+#else
+        int result;
+        char input_buffer[MAX_INPUT_BUFFER];
+#endif
+
+        float la1, la5, la15;
+
+        if (process_arguments (argc, argv) == ERROR)
+                usage ("\n");
+
+#if HAVE_GETLOADAVG==1
+        result = getloadavg (la, 3);
+        if (result == -1)
+                return STATE_UNKNOWN;
+        la1 = la[LOADAVG_1MIN];
+        la5 = la[LOADAVG_5MIN];
+        la15 = la[LOADAVG_15MIN];
+#elif HAVE_PROC_LOADAVG==1
+        fp = fopen (PROC_LOADAVG, "r");
+        if (fp == NULL) {
+                printf ("Error opening %s\n", PROC_LOADAVG);
+                return STATE_UNKNOWN;
+        }
+
+        la1 = la5 = la15 = -1;
+
+        while (fgets (input_buffer, MAX_INPUT_BUFFER - 1, fp)) {
+                tmp_ptr = strtok (input_buffer, " ");
+                la1 = atof (tmp_ptr);
+                tmp_ptr = strtok (NULL, " ");
+                la5 = atof (tmp_ptr);
+                tmp_ptr = strtok (NULL, " ");
+                la15 = atof (tmp_ptr);
+        }
+
+        fclose (fp);
+#else
+        child_process = spopen (PATH_TO_UPTIME);
+        if (child_process == NULL) {
+                printf ("Error opening %s\n", PATH_TO_UPTIME);
+                return STATE_UNKNOWN;
+        }
+        child_stderr = fdopen (child_stderr_array[fileno (child_process)], "r");
+        if (child_stderr == NULL) {
+                printf ("Could not open stderr for %s\n", PATH_TO_UPTIME);
+        }
+        fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_process);
+        sscanf (input_buffer, "%*[^l]load average: %f, %f, %f", &la1, &la5, &la15);
+
+        result = spclose (child_process);
+        if (result) {
+                printf ("Error code %d returned in %s\n", result, PATH_TO_UPTIME);
+                return STATE_UNKNOWN;
+        }
+#endif
+
+        if ((la1 == -1) || (la5 == -1) || (la15 == -1)) {
+#if HAVE_GETLOADAVG==1
+                printf ("Error in getloadavg()\n");
+#elif HAVE_PROC_LOADAVG==1
+                printf ("Error processing %s\n", PROC_LOADAVG);
+#else
+                printf ("Error processing %s\n", PATH_TO_UPTIME);
+#endif
+                return STATE_UNKNOWN;
+        }
+        printf ("load average: %.2f, %.2f, %.2f", la1, la5, la15);
+        if ((la1 >= cload1) || (la5 >= cload5) || (la15 >= cload15)) {
+                printf (" CRITICAL\n");
+                return STATE_CRITICAL;
+        }
+        if ((la1 >= wload1) || (la5 >= wload5) || (la15 >= wload15)) {
+                printf (" WARNING\n");
+                return STATE_WARNING;
+        }
+        printf ("\n");
+        return STATE_OK;
+}
+
+
+
+
+
+/* process command-line arguments */
+int
+process_arguments (int argc, char **argv)
+{
+        int c;
+
+        if (argc < 2)
+                return ERROR;
+
+        c = 0;
+        while (c += (call_getopt (argc - c, &argv[c]))) {
+                if (argc <= c)
+                        break;
+
+                if (wload1 < 0 && is_nonnegative (argv[c]))
+                        wload1 = atof (argv[c]);
+                else if (cload1 < 0 && is_nonnegative (argv[c]))
+                        cload1 = atof (argv[c]);
+                else if (wload5 < 0 && is_nonnegative (argv[c]))
+                        wload5 = atof (argv[c]);
+                else if (cload5 < 0 && is_nonnegative (argv[c]))
+                        cload5 = atof (argv[c]);
+                else if (wload15 < 0 && is_nonnegative (argv[c]))
+                        wload15 = atof (argv[c]);
+                else if (cload15 < 0 && is_nonnegative (argv[c]))
+                        cload15 = atof (argv[c]);
+        }
+
+        return validate_arguments ();
+}
+
+
+
+
+
+int
+call_getopt (int argc, char **argv)
+{
+        int c, i = 0;
+
+#ifdef HAVE_GETOPT_H
+        int option_index = 0;
+        static struct option long_options[] = {
+                {"warning", required_argument, 0, 'w'},
+                {"critical", required_argument, 0, 'c'},
+                {"version", no_argument, 0, 'V'},
+                {"help", no_argument, 0, 'h'},
+                {0, 0, 0, 0}
+        };
+#endif
+
+        while (1) {
+#ifdef HAVE_GETOPT_H
+                c = getopt_long (argc, argv, "+?Vhc:w:", long_options, &option_index);
+#else
+                c = getopt (argc, argv, "+?Vhc:w:");
+#endif
+
+                i++;
+
+                if (c == -1 || c == EOF)
+                        break;
+
+                switch (c) {
+                case 'c':
+                case 'w':
+                        i++;
+                }
+
+                switch (c) {
+                case 'w':                                                                       /* warning time threshold */
+                        if (is_intnonneg (optarg)) {
+                                if (wload1 < 0 && is_nonnegative (argv[c]))
+                                        wload1 = atof (argv[c]);
+                                else if (wload5 < 0 && is_nonnegative (argv[c]))
+                                        wload5 = atof (argv[c]);
+                                else if (wload15 < 0 && is_nonnegative (argv[c]))
+                                        wload15 = atof (argv[c]);
+                                break;
+                        }
+                        else if (strstr (optarg, ",") &&
+                                                         sscanf (optarg, "%f,%f,%f", &wload1, &wload5, &wload15) == 3) {
+                                break;
+                        }
+                        else {
+                                usage ("Warning threshold must be float or float triplet!\n");
+                        }
+                case 'c':                                                                       /* critical time threshold */
+                        if (is_intnonneg (optarg)) {
+                                if (cload1 < 0 && is_nonnegative (argv[c]))
+                                        cload1 = atof (argv[c]);
+                                else if (cload5 < 0 && is_nonnegative (argv[c]))
+                                        cload5 = atof (argv[c]);
+                                else if (cload15 < 0 && is_nonnegative (argv[c]))
+                                        cload15 = atof (argv[c]);
+                                break;
+                        }
+                        else if (strstr (optarg, ",") &&
+                                                         sscanf (optarg, "%f,%f,%f", &cload1, &cload5, &cload15) == 3) {
+                                break;
+                        }
+                        else {
+                                usage ("Critical threshold must be float or float triplet!\n");
+                        }
+                case 'V':                                                                       /* version */
+                        print_revision (my_basename (argv[0]), "$Revision$");
+                        exit (STATE_OK);
+                case 'h':                                                                       /* help */
+                        print_help ();
+                        exit (STATE_OK);
+                case '?':                                                                       /* help */
+                        usage ("Invalid argument\n");
+                }
+        }
+        return i;
+}
+
+
+
+
+
+int
+validate_arguments (void)
+{
+        if ((wload1 > cload1) || (wload5 > cload5) || (wload15 > cload15)) {
+                printf
+                        ("Inconsistence in parameters: \"warning load\" greater than \"critical load\".\n");
+                return STATE_UNKNOWN;
+        }
+
+        return OK;
+}
+
+
+
+
+
+void
+print_usage (void)
+{
+        printf
+                ("Usage: check_load -w WLOAD1,WLOAD5,WLOAD15 -c CLOAD1,CLOAD5,CLOAD15\n"
+                 "       check_load --version\n" "       check_load --help\n");
+}
+
+
+
+
+
+void
+print_help (void)
+{
+        print_revision (PROGNAME, "$Revision$");
+        printf
+                ("Copyright (c) 1999 Felipe Gustavo de Almeida <galmeida@linux.ime.usp.br>\n"
+                 "Copyright (c) 2000 Karl DeBisschop\n\n"
+                 "This plugin tests the current system load average.\n\n");
+        print_usage ();
+        printf
+                ("\nOptions:\n"
+                 " -w, --warning=WLOAD1,WLOAD5,WLOAD15\n"
+                 "   Exit with WARNING status if load average exceeds WLOADn\n"
+                 " -c, --critical=CLOAD1,CLOAD5,CLOAD15\n"
+                 "   Exit with CRITICAL status if load average exceed CLOADn\n"
+                 " -h, --help\n"
+                 "    Print detailed help screen\n"
+                 " -V, --version\n"
+                 "    Print version information\n\n"
+                 "the load average format is the same used by \"uptime\" and \"w\"\n\n");
+        support ();
+}