+#include "libmemcached/common.h"
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <string.h>
#include <getopt.h>
+#include <sys/time.h>
#include <libmemcached/memcached.h>
#define PROGRAM_DESCRIPTION "Output the state of a memcached cluster."
/* Prototypes */
-void options_parse(int argc, char *argv[]);
+static void options_parse(int argc, char *argv[]);
+static void run_analyzer(memcached_st *memc, memcached_stat_st *memc_stat,
+ memcached_server_st *server_list);
+static void print_server_listing(memcached_st *memc, memcached_stat_st *memc_stat,
+ memcached_server_st *server_list);
+static void print_analysis_report(memcached_st *memc,
+ memcached_analysis_st *report,
+ memcached_server_st *server_list);
static int opt_verbose= 0;
static int opt_displayflag= 0;
+static int opt_analyze= 0;
static char *opt_servers= NULL;
+static char *analyze_mode= NULL;
+
+static struct option long_options[]=
+{
+ {(OPTIONSTRING)"version", no_argument, NULL, OPT_VERSION},
+ {(OPTIONSTRING)"help", no_argument, NULL, OPT_HELP},
+ {(OPTIONSTRING)"verbose", no_argument, &opt_verbose, OPT_VERBOSE},
+ {(OPTIONSTRING)"debug", no_argument, &opt_verbose, OPT_DEBUG},
+ {(OPTIONSTRING)"servers", required_argument, NULL, OPT_SERVERS},
+ {(OPTIONSTRING)"flag", no_argument, &opt_displayflag, OPT_FLAG},
+ {(OPTIONSTRING)"analyze", optional_argument, NULL, OPT_ANALYZE},
+ {0, 0, 0, 0},
+};
int main(int argc, char *argv[])
{
- unsigned int x;
memcached_return rc;
memcached_st *memc;
- memcached_stat_st *stat;
+ memcached_stat_st *memc_stat;
memcached_server_st *servers;
memcached_server_st *server_list;
opt_servers= strdup(temp);
else
{
- fprintf(stderr, "No Servers provided\n");
+ fprintf(stderr, "No Servers provided\n\n");
+ help_command(PROGRAM_NAME, PROGRAM_DESCRIPTION, long_options, 0);
exit(1);
}
}
memcached_server_push(memc, servers);
memcached_server_list_free(servers);
- stat= memcached_stat(memc, NULL, &rc);
+ memc_stat= memcached_stat(memc, NULL, &rc);
if (rc != MEMCACHED_SUCCESS && rc != MEMCACHED_SOME_ERRORS)
{
printf("Failure to communicate with servers (%s)\n",
- memcached_strerror(memc, rc));
+ memcached_strerror(memc, rc));
exit(1);
}
server_list= memcached_server_list(memc);
+ if (opt_analyze)
+ run_analyzer(memc, memc_stat, server_list);
+ else
+ print_server_listing(memc, memc_stat, server_list);
+
+ free(memc_stat);
+ free(opt_servers);
+
+ memcached_free(memc);
+
+ return 0;
+}
+
+static void run_analyzer(memcached_st *memc, memcached_stat_st *memc_stat,
+ memcached_server_st *server_list)
+{
+ memcached_return rc;
+
+ if (analyze_mode == NULL)
+ {
+ memcached_analysis_st *report;
+ report= memcached_analyze(memc, memc_stat, &rc);
+ if (rc != MEMCACHED_SUCCESS || report == NULL)
+ {
+ printf("Failure to analyze servers (%s)\n",
+ memcached_strerror(memc, rc));
+ exit(1);
+ }
+ print_analysis_report(memc, report, server_list);
+ free(report);
+ }
+ else if (strcmp(analyze_mode, "latency") == 0)
+ {
+ memcached_st **servers;
+ uint32_t x, y, flags, server_count= memcached_server_count(memc);
+ uint32_t num_of_tests= 32;
+ const char *test_key= "libmemcached_test_key";
+
+ servers= malloc(sizeof(memcached_st*) * server_count);
+ if (!servers)
+ {
+ fprintf(stderr, "Failed to allocate memory\n");
+ return;
+ }
+
+ for (x= 0; x < server_count; x++)
+ {
+ if((servers[x]= memcached_create(NULL)) == NULL)
+ {
+ fprintf(stderr, "Failed to memcached_create()\n");
+ if (x > 0)
+ memcached_free(servers[0]);
+ x--;
+ for (; x > 0; x--)
+ memcached_free(servers[x]);
+
+ free(servers);
+ return;
+ }
+ memcached_server_add(servers[x],
+ memcached_server_name(memc, server_list[x]),
+ memcached_server_port(memc, server_list[x]));
+ }
+
+ printf("Network Latency Test:\n\n");
+ struct timeval start_time, end_time;
+ long elapsed_time, slowest_time= 0, slowest_server= 0;
+
+ for (x= 0; x < server_count; x++)
+ {
+ gettimeofday(&start_time, NULL);
+ for (y= 0; y < num_of_tests; y++)
+ {
+ size_t vlen;
+ char *val= memcached_get(servers[x], test_key, strlen(test_key),
+ &vlen, &flags, &rc);
+ if (rc != MEMCACHED_NOTFOUND && rc != MEMCACHED_SUCCESS)
+ break;
+ free(val);
+ }
+ gettimeofday(&end_time, NULL);
+
+ elapsed_time= timedif(end_time, start_time);
+ elapsed_time /= (long)num_of_tests;
+
+ if (elapsed_time > slowest_time)
+ {
+ slowest_server= (long)x;
+ slowest_time= elapsed_time;
+ }
+
+ if (rc != MEMCACHED_NOTFOUND && rc != MEMCACHED_SUCCESS)
+ {
+ printf("\t %s (%d) => failed to reach the server\n",
+ memcached_server_name(memc, server_list[x]),
+ memcached_server_port(memc, server_list[x]));
+ }
+ else
+ {
+ printf("\t %s (%d) => %ld.%ld seconds\n",
+ memcached_server_name(memc, server_list[x]),
+ memcached_server_port(memc, server_list[x]),
+ elapsed_time / 1000, elapsed_time % 1000);
+ }
+ }
+
+ if (server_count > 1 && slowest_time > 0)
+ {
+ printf("---\n");
+ printf("Slowest Server: %s (%d) => %ld.%ld seconds\n",
+ memcached_server_name(memc, server_list[slowest_server]),
+ memcached_server_port(memc, server_list[slowest_server]),
+ slowest_time / 1000, slowest_time % 1000);
+ }
+ printf("\n");
+
+ for (x= 0; x < server_count; x++)
+ memcached_free(servers[x]);
+
+ free(servers);
+ free(analyze_mode);
+ }
+ else
+ {
+ fprintf(stderr, "Invalid Analyzer Option provided\n");
+ free(analyze_mode);
+ }
+}
+
+static void print_server_listing(memcached_st *memc, memcached_stat_st *memc_stat,
+ memcached_server_st *server_list)
+{
+ unsigned int x;
+ memcached_return rc;
+
printf("Listing %u Server\n\n", memcached_server_count(memc));
for (x= 0; x < memcached_server_count(memc); x++)
{
char **list;
char **ptr;
- list= memcached_stat_get_keys(memc, &stat[x], &rc);
+ list= memcached_stat_get_keys(memc, &memc_stat[x], &rc);
printf("Server: %s (%u)\n", memcached_server_name(memc, server_list[x]),
- memcached_server_port(memc, server_list[x]));
+ memcached_server_port(memc, server_list[x]));
for (ptr= list; *ptr; ptr++)
{
- memcached_return rc;
- char *value= memcached_stat_get_value(memc, &stat[x], *ptr, &rc);
+ char *value= memcached_stat_get_value(memc, &memc_stat[x], *ptr, &rc);
printf("\t %s: %s\n", *ptr, value);
free(value);
free(list);
printf("\n");
}
+}
- free(stat);
- free(opt_servers);
+static void print_analysis_report(memcached_st *memc,
+ memcached_analysis_st *report,
+ memcached_server_st *server_list)
+{
+ uint32_t server_count= memcached_server_count(memc);
- memcached_free(memc);
+ printf("Memcached Cluster Analysis Report\n\n");
- return 0;
+ printf("\tNumber of Servers Analyzed : %d\n", server_count);
+ printf("\tAverage Item Size (incl/overhead) : %u bytes\n",
+ report->average_item_size);
+
+ if (server_count == 1)
+ {
+ printf("\nFor a detailed report, you must supply multiple servers.\n");
+ return;
+ }
+
+ printf("\n");
+ printf("\tNode with most memory consumption : %s:%u (%llu bytes)\n",
+ memcached_server_name(memc, server_list[report->most_consumed_server]),
+ memcached_server_port(memc, server_list[report->most_consumed_server]),
+ (unsigned long long)report->most_used_bytes);
+ printf("\tNode with least free space : %s:%u (%llu bytes remaining)\n",
+ memcached_server_name(memc, server_list[report->least_free_server]),
+ memcached_server_port(memc, server_list[report->least_free_server]),
+ (unsigned long long)report->least_remaining_bytes);
+ printf("\tNode with longest uptime : %s:%u (%us)\n",
+ memcached_server_name(memc, server_list[report->oldest_server]),
+ memcached_server_port(memc, server_list[report->oldest_server]),
+ report->longest_uptime);
+ printf("\tPool-wide Hit Ratio : %1.f%%\n", report->pool_hit_ratio);
+ printf("\n");
}
-void options_parse(int argc, char *argv[])
+static void options_parse(int argc, char *argv[])
{
memcached_programs_help_st help_options[]=
{
{0},
};
- static struct option long_options[]=
- {
- {"version", no_argument, NULL, OPT_VERSION},
- {"help", no_argument, NULL, OPT_HELP},
- {"verbose", no_argument, &opt_verbose, OPT_VERBOSE},
- {"debug", no_argument, &opt_verbose, OPT_DEBUG},
- {"servers", required_argument, NULL, OPT_SERVERS},
- {"flag", no_argument, &opt_displayflag, OPT_FLAG},
- {0, 0, 0, 0},
- };
-
int option_index= 0;
int option_rv;
while (1)
{
- option_rv= getopt_long(argc, argv, "Vhvds:", long_options, &option_index);
+ option_rv= getopt_long(argc, argv, "Vhvds:a", long_options, &option_index);
if (option_rv == -1) break;
switch (option_rv)
{
case OPT_SERVERS: /* --servers or -s */
opt_servers= strdup(optarg);
break;
+ case OPT_ANALYZE: /* --analyze or -a */
+ opt_analyze= OPT_ANALYZE;
+ analyze_mode= (optarg) ? strdup(optarg) : NULL;
+ break;
case '?':
/* getopt_long already printed an error message. */
exit(1);
projects / m6w6 / libmemcached / blobdiff