+/* LibMemcached
+ * Copyright (C) 2006-2009 Brian Aker
+ * All rights reserved.
+ *
+ * Use and distribution licensed under the BSD license. See
+ * the COPYING file in the parent directory for full text.
+ *
+ * Summary:
+ *
+ * Authors:
+ * Brian Aker
+ * Toru Maesaka
+ */
+#include "config.h"
+
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/types.h>
-#include <sys/mman.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);
+static void print_analysis_report(memcached_st *memc,
+ memcached_analysis_st *report);
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},
+};
+
+
+static memcached_return_t stat_printer(memcached_server_instance_st instance,
+ const char *key, size_t key_length,
+ const char *value, size_t value_length,
+ void *context)
+{
+ static memcached_server_instance_st last= NULL;
+ (void)context;
+
+ if (last != instance)
+ {
+ printf("Server: %s (%u)\n", memcached_server_name(instance),
+ (uint32_t)memcached_server_port(instance));
+ last= instance;
+ }
+
+ printf("\t %.*s: %.*s\n", (int)key_length, key, (int)value_length, value);
+
+ return MEMCACHED_SUCCESS;
+}
int main(int argc, char *argv[])
{
- unsigned int x;
- memcached_return rc;
+ memcached_return_t rc;
memcached_st *memc;
- memcached_stat_st *stat;
memcached_server_st *servers;
- memcached_server_st *server_list;
options_parse(argc, argv);
+ initialize_sockets();
- if (!opt_servers)
+ if (! opt_servers)
{
char *temp;
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);
}
}
memc= memcached_create(NULL);
servers= memcached_servers_parse(opt_servers);
- memcached_server_push(memc, servers);
+ rc= memcached_server_push(memc, servers);
memcached_server_list_free(servers);
- 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)
+ {
+ memcached_stat_st *memc_stat;
+
+ memc_stat= memcached_stat(memc, NULL, &rc);
+
+ if (! memc_stat)
+ exit(-1);
+
+ run_analyzer(memc, memc_stat);
+
+ memcached_stat_free(memc, memc_stat);
+ }
+ else
+ {
+ rc= memcached_stat_execute(memc, NULL, stat_printer, NULL);
+ }
+
+ free(opt_servers);
+
+ memcached_free(memc);
+
+ return rc == MEMCACHED_SUCCESS ? 0: -1;
+}
+
+static void run_analyzer(memcached_st *memc, memcached_stat_st *memc_stat)
+{
+ memcached_return_t rc;
- printf("Listing %u Server\n\n", memcached_server_count(memc));
- for (x= 0; x < memcached_server_count(memc); x++)
+ 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);
+ free(report);
+ }
+ else if (strcmp(analyze_mode, "latency") == 0)
{
- char **list;
- char **ptr;
+ memcached_st **servers;
+ uint32_t 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 (uint32_t x= 0; x < server_count; x++)
+ {
+ memcached_server_instance_st instance=
+ memcached_server_instance_by_position(memc, 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]);
- list= memcached_stat_get_keys(memc, &stat[x], &rc);
+ free(servers);
+ return;
+ }
+ memcached_server_add(servers[x],
+ memcached_server_name(instance),
+ memcached_server_port(instance));
+ }
+
+ printf("Network Latency Test:\n\n");
+ struct timeval start_time, end_time;
+ uint32_t slowest_server= 0;
+ long elapsed_time, slowest_time= 0;
- printf("Server: %s (%u)\n", memcached_server_name(memc, server_list[x]),
- memcached_server_port(memc, server_list[x]));
- for (ptr= list; *ptr; ptr++)
+ for (uint32_t x= 0; x < server_count; x++)
{
- memcached_return rc;
- char *value= memcached_stat_get_value(memc, &stat[x], *ptr, &rc);
+ memcached_server_instance_st instance=
+ memcached_server_instance_by_position(memc, x);
+ gettimeofday(&start_time, NULL);
+
+ for (uint32_t 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= (long) timedif(end_time, start_time);
+ elapsed_time /= (long) num_of_tests;
- printf("\t %s: %s\n", *ptr, value);
- free(value);
+ if (elapsed_time > slowest_time)
+ {
+ slowest_server= 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(instance),
+ memcached_server_port(instance));
+ }
+ else
+ {
+ printf("\t %s (%d) => %ld.%ld seconds\n",
+ memcached_server_name(instance),
+ memcached_server_port(instance),
+ elapsed_time / 1000, elapsed_time % 1000);
+ }
}
- free(list);
+ if (server_count > 1 && slowest_time > 0)
+ {
+ memcached_server_instance_st slowest=
+ memcached_server_instance_by_position(memc, slowest_server);
+
+ printf("---\n");
+ printf("Slowest Server: %s (%d) => %ld.%ld seconds\n",
+ memcached_server_name(slowest),
+ memcached_server_port(slowest),
+ slowest_time / 1000, slowest_time % 1000);
+ }
printf("\n");
+
+ for (uint32_t 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);
}
+}
- free(stat);
- free(opt_servers);
+static void print_analysis_report(memcached_st *memc,
+ memcached_analysis_st *report)
+
+{
+ uint32_t server_count= memcached_server_count(memc);
+ memcached_server_instance_st most_consumed_server= memcached_server_instance_by_position(memc, report->most_consumed_server);
+ memcached_server_instance_st least_free_server= memcached_server_instance_by_position(memc, report->least_free_server);
+ memcached_server_instance_st oldest_server= memcached_server_instance_by_position(memc, report->oldest_server);
- memcached_free(memc);
+ printf("Memcached Cluster Analysis Report\n\n");
- return 0;
+ printf("\tNumber of Servers Analyzed : %u\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(most_consumed_server),
+ (uint32_t)memcached_server_port(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(least_free_server),
+ (uint32_t)memcached_server_port(least_free_server),
+ (unsigned long long)report->least_remaining_bytes);
+ printf("\tNode with longest uptime : %s:%u (%us)\n",
+ memcached_server_name(oldest_server),
+ (uint32_t)memcached_server_port(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