--- /dev/null
+/* LibMemcached
+ * Copyright (C) 2011-2012 Data Differential, http://datadifferential.com/
+ * 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 <mem_config.h>
+
+#include <cstdio>
+#include <cstring>
+#include <ctime>
+#include <iostream>
+#include <fcntl.h>
+#include <getopt.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/types.h>
+
+#include <libmemcached-1.0/memcached.h>
+
+#include "client_options.h"
+#include "utilities.h"
+
+#define PROGRAM_NAME "memstat"
+#define PROGRAM_DESCRIPTION "Output the state of a memcached cluster."
+
+/* Prototypes */
+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 bool opt_binary= false;
+static bool opt_verbose= false;
+static bool opt_server_version= false;
+static bool opt_analyze= false;
+static char *opt_servers= NULL;
+static char *stat_args= NULL;
+static char *analyze_mode= NULL;
+static char *opt_username;
+static char *opt_passwd;
+
+static struct option long_options[]=
+{
+ {(OPTIONSTRING)"args", required_argument, NULL, OPT_STAT_ARGS},
+ {(OPTIONSTRING)"version", no_argument, NULL, OPT_VERSION},
+ {(OPTIONSTRING)"help", no_argument, NULL, OPT_HELP},
+ {(OPTIONSTRING)"quiet", no_argument, NULL, OPT_QUIET},
+ {(OPTIONSTRING)"verbose", no_argument, NULL, OPT_VERBOSE},
+ {(OPTIONSTRING)"binary", no_argument, NULL, OPT_BINARY},
+ {(OPTIONSTRING)"debug", no_argument, NULL, OPT_DEBUG},
+ {(OPTIONSTRING)"server-version", no_argument, NULL, OPT_SERVER_VERSION},
+ {(OPTIONSTRING)"servers", required_argument, NULL, OPT_SERVERS},
+ {(OPTIONSTRING)"analyze", optional_argument, NULL, OPT_ANALYZE},
+ {(OPTIONSTRING)"username", required_argument, NULL, OPT_USERNAME},
+ {(OPTIONSTRING)"password", required_argument, NULL, OPT_PASSWD},
+ {0, 0, 0, 0},
+};
+
+
+static memcached_return_t stat_printer(const memcached_instance_st * instance,
+ const char *key, size_t key_length,
+ const char *value, size_t value_length,
+ void *context)
+{
+ static const memcached_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;
+}
+
+static memcached_return_t server_print_callback(const memcached_st *,
+ const memcached_instance_st * instance,
+ void *)
+{
+ std::cerr << memcached_server_name(instance) << ":" << memcached_server_port(instance) <<
+ " " << int(memcached_server_major_version(instance)) <<
+ "." << int(memcached_server_minor_version(instance)) <<
+ "." << int(memcached_server_micro_version(instance)) << std::endl;
+
+ return MEMCACHED_SUCCESS;
+}
+
+int main(int argc, char *argv[])
+{
+ options_parse(argc, argv);
+ initialize_sockets();
+
+ if (opt_servers == NULL)
+ {
+ char *temp;
+ if ((temp= getenv("MEMCACHED_SERVERS")))
+ {
+ opt_servers= strdup(temp);
+ }
+
+ if (opt_servers == NULL)
+ {
+ std::cerr << "No Servers provided" << std::endl;
+ return EXIT_FAILURE;
+ }
+ }
+
+ memcached_server_st* servers= memcached_servers_parse(opt_servers);
+ if (servers == NULL or memcached_server_list_count(servers) == 0)
+ {
+ std::cerr << "Invalid server list provided:" << opt_servers << std::endl;
+ return EXIT_FAILURE;
+ }
+
+ if (opt_servers)
+ {
+ free(opt_servers);
+ }
+
+ memcached_st *memc= memcached_create(NULL);
+ memcached_behavior_set(memc, MEMCACHED_BEHAVIOR_BINARY_PROTOCOL, opt_binary);
+
+ memcached_return_t rc= memcached_server_push(memc, servers);
+ memcached_server_list_free(servers);
+
+ if (opt_username and LIBMEMCACHED_WITH_SASL_SUPPORT == 0)
+ {
+ memcached_free(memc);
+ std::cerr << "--username was supplied, but binary was not built with SASL support." << std::endl;
+ return EXIT_FAILURE;
+ }
+
+ if (opt_username)
+ {
+ memcached_return_t ret;
+ if (memcached_failed(ret= memcached_set_sasl_auth_data(memc, opt_username, opt_passwd)))
+ {
+ std::cerr << memcached_last_error_message(memc) << std::endl;
+ memcached_free(memc);
+ return EXIT_FAILURE;
+ }
+ }
+
+ if (rc != MEMCACHED_SUCCESS and rc != MEMCACHED_SOME_ERRORS)
+ {
+ printf("Failure to communicate with servers (%s)\n",
+ memcached_strerror(memc, rc));
+ exit(EXIT_FAILURE);
+ }
+
+ if (opt_server_version)
+ {
+ if (memcached_failed(memcached_version(memc)))
+ {
+ std::cerr << "Unable to obtain server version";
+ exit(EXIT_FAILURE);
+ }
+
+ memcached_server_fn callbacks[1];
+ callbacks[0]= server_print_callback;
+ memcached_server_cursor(memc, callbacks, NULL, 1);
+ }
+ else if (opt_analyze)
+ {
+ memcached_stat_st *memc_stat= memcached_stat(memc, NULL, &rc);
+
+ if (memc_stat == NULL)
+ {
+ exit(EXIT_FAILURE);
+ }
+
+ run_analyzer(memc, memc_stat);
+
+ memcached_stat_free(memc, memc_stat);
+ }
+ else
+ {
+ rc= memcached_stat_execute(memc, stat_args, stat_printer, NULL);
+ }
+
+ memcached_free(memc);
+
+ return rc == MEMCACHED_SUCCESS ? EXIT_SUCCESS: EXIT_FAILURE;
+}
+
+static void run_analyzer(memcached_st *memc, memcached_stat_st *memc_stat)
+{
+ memcached_return_t 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);
+ free(report);
+ }
+ else if (strcmp(analyze_mode, "latency") == 0)
+ {
+ uint32_t flags, server_count= memcached_server_count(memc);
+ uint32_t num_of_tests= 32;
+ const char *test_key= "libmemcached_test_key";
+
+ memcached_st **servers= static_cast<memcached_st**>(malloc(sizeof(memcached_st*) * server_count));
+ if (servers == NULL)
+ {
+ fprintf(stderr, "Failed to allocate memory\n");
+ return;
+ }
+
+ for (uint32_t x= 0; x < server_count; x++)
+ {
+ const memcached_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]);
+ }
+
+ 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;
+
+ for (uint32_t x= 0; x < server_count; x++)
+ {
+ const memcached_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 and rc != MEMCACHED_SUCCESS)
+ {
+ break;
+ }
+ free(val);
+ }
+ gettimeofday(&end_time, NULL);
+
+ elapsed_time= (long) timedif(end_time, start_time);
+ elapsed_time /= (long) num_of_tests;
+
+ 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);
+ }
+ }
+
+ if (server_count > 1 && slowest_time > 0)
+ {
+ const memcached_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);
+ }
+}
+
+static void print_analysis_report(memcached_st *memc,
+ memcached_analysis_st *report)
+
+{
+ uint32_t server_count= memcached_server_count(memc);
+ const memcached_instance_st * most_consumed_server= memcached_server_instance_by_position(memc, report->most_consumed_server);
+ const memcached_instance_st * least_free_server= memcached_server_instance_by_position(memc, report->least_free_server);
+ const memcached_instance_st * oldest_server= memcached_server_instance_by_position(memc, report->oldest_server);
+
+ printf("Memcached Cluster Analysis Report\n\n");
+
+ 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");
+}
+
+static void options_parse(int argc, char *argv[])
+{
+ memcached_programs_help_st help_options[]=
+ {
+ {0},
+ };
+
+ int option_index= 0;
+
+ bool opt_version= false;
+ bool opt_help= false;
+ while (1)
+ {
+ int option_rv= getopt_long(argc, argv, "Vhvds:a", long_options, &option_index);
+
+ if (option_rv == -1)
+ break;
+
+ switch (option_rv)
+ {
+ case 0:
+ break;
+
+ case OPT_VERBOSE: /* --verbose or -v */
+ opt_verbose= true;
+ break;
+
+ case OPT_DEBUG: /* --debug or -d */
+ opt_verbose= true;
+ break;
+
+ case OPT_BINARY:
+ opt_binary= true;
+ break;
+
+ case OPT_SERVER_VERSION:
+ opt_server_version= true;
+ break;
+
+ case OPT_VERSION: /* --version or -V */
+ opt_version= true;
+ break;
+
+ case OPT_HELP: /* --help or -h */
+ opt_help= true;
+ break;
+
+ case OPT_SERVERS: /* --servers or -s */
+ opt_servers= strdup(optarg);
+ break;
+
+ case OPT_STAT_ARGS:
+ stat_args= strdup(optarg);
+ break;
+
+ case OPT_ANALYZE: /* --analyze or -a */
+ opt_analyze= true;
+ analyze_mode= (optarg) ? strdup(optarg) : NULL;
+ break;
+
+ case OPT_QUIET:
+ close_stdio();
+ break;
+
+ case OPT_USERNAME:
+ opt_username= optarg;
+ opt_binary= true;
+ break;
+
+ case OPT_PASSWD:
+ opt_passwd= optarg;
+ break;
+
+ case '?':
+ /* getopt_long already printed an error message. */
+ exit(1);
+ default:
+ abort();
+ }
+ }
+
+ if (opt_version)
+ {
+ version_command(PROGRAM_NAME);
+ exit(EXIT_SUCCESS);
+ }
+
+ if (opt_help)
+ {
+ help_command(PROGRAM_NAME, PROGRAM_DESCRIPTION, long_options, help_options);
+ exit(EXIT_SUCCESS);
+ }
+}
projects / awesomized / libmemcached / blobdiff