#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;
- }
+#define PROGRAM_DESCRIPTION "Print stats/version of or analyze a memcached cluster."
+#define PROGRAM_VERSION "1.1"
- printf("\t %.*s: %.*s\n", (int) key_length, key, (int) value_length, value);
+#include "common/options.hpp"
+#include "common/checks.hpp"
+#include "common/utilities.h"
- return MEMCACHED_SUCCESS;
-}
+#include <cstdio>
+#include <chrono>
+#include <iomanip>
-static memcached_return_t server_print_callback(const memcached_st *,
- const memcached_instance_st *instance, void *) {
+static memcached_return_t print_server_version(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)) << "."
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" << std::endl;
- 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 || rc != MEMCACHED_SUCCESS) {
- std::cerr << memcached_last_error_message(memc) << std::endl;
- exit(EXIT_FAILURE);
- }
+static void print_report(memcached_st *memc, memcached_analysis_st *report) {
+ uint32_t server_count = memcached_server_count(memc);
+ auto most_consumed_server = memcached_server_instance_by_position(memc, report->most_consumed_server);
+ auto least_free_server = memcached_server_instance_by_position(memc, report->least_free_server);
+ auto oldest_server = memcached_server_instance_by_position(memc, report->oldest_server);
- run_analyzer(memc, memc_stat);
+ 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);
- memcached_stat_free(memc, memc_stat);
- } else {
- rc = memcached_stat_execute(memc, stat_args, stat_printer, NULL);
+ if (server_count == 1) {
+ printf("\nFor a detailed report, you must supply multiple servers.\n");
+ return;
}
- memcached_free(memc);
-
- return rc == MEMCACHED_SUCCESS ? EXIT_SUCCESS : EXIT_FAILURE;
+ 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 run_analyzer(memcached_st *memc, memcached_stat_st *memc_stat) {
+static bool analyze_stat(const client_options &opt, memcached_st *memc, memcached_stat_st *stat) {
memcached_return_t rc;
+ auto report = memcached_analyze(memc, stat, &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;
+ if (rc != MEMCACHED_SUCCESS || !report) {
+ if (!opt.isset("quiet")) {
+ std::cerr << "Failure to analyze servers:" << memcached_strerror(memc, rc) << ".\n";
}
+ return false;
+ }
+ print_report(memc, report);
+ free(report);
+ return true;
+}
- for (uint32_t x = 0; x < server_count; x++) {
- const memcached_instance_st *instance = memcached_server_instance_by_position(memc, x);
+using time_clock = std::chrono::high_resolution_clock;
+using time_point = std::chrono::time_point<time_clock>;
+using time_format = std::chrono::duration<double, std::ratio<1,1>>;
+using time_format_ms = std::chrono::duration<double, std::ratio<1,1000>>;
- if ((servers[x] = memcached_create(NULL)) == NULL) {
- fprintf(stderr, "Failed to memcached_create()\n");
- if (x > 0) {
- memcached_free(servers[0]);
- }
- x--;
+static void latency_test(uint32_t iterations, std::vector<memcached_st> servers) {
+ const char *test_key = "libmemcached_test_key";
+ size_t test_key_len = strlen(test_key);
+ const memcached_instance_st *slowest_server = nullptr;
+ time_point::duration slowest_time{};
- for (; x > 0; x--) {
- memcached_free(servers[x]);
- }
+ std::cout << "Network Latency Test:\n\n" << std::showpoint << std::fixed << std::setprecision(3);
- free(servers);
+ for (auto &memc : servers) {
+ memcached_return_t rc;
- return;
+ auto start = time_clock::now();
+ for (auto i = 0u; i < iterations; ++i) {
+ free(memcached_get(&memc, test_key, test_key_len, nullptr, nullptr, &rc));
+ if (memcached_fatal(rc)) {
+ break;
}
- 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);
+ auto elapsed = time_clock::now() - start;
+
+ auto inst = memcached_server_instance_by_position(&memc, 0);
+ std::cout << "\t " << memcached_server_name(inst)
+ << " (" << memcached_server_port(inst) << ") ";
+
+ if (memcached_fatal(rc)) {
+ std::cout << " => failed to reach the server\n";
+ } else {
+ std::cout << " => "
+ << time_format(elapsed/iterations).count() << " seconds ("
+ << time_format_ms(elapsed/iterations).count() << "ms)\n";
+ if (slowest_time == time_point::duration::zero() || slowest_time < elapsed) {
+ slowest_time = elapsed;
+ slowest_server = inst;
}
}
+ }
- 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);
+ if (servers.size() > 1 && slowest_server) {
+ std::cout << "\n---\n\nSlowest Server: "
+ << memcached_server_name(slowest_server) << "("
+ << memcached_server_port(slowest_server) << ")"
+ << " => "
+ << time_format(slowest_time/iterations).count() << " seconds ("
+ << time_format_ms(slowest_time/iterations).count() << "ms)\n";
}
}
-static void print_analysis_report(memcached_st *memc, memcached_analysis_st *report)
+static bool analyze_latency(client_options &opt, memcached_st *root) {
+ uint32_t num_of_tests = 32;
-{
- 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);
+ std::vector<memcached_st> servers{memcached_server_count(root)};
- printf("Memcached Cluster Analysis Report\n\n");
+ uint32_t i = 0;
+ for (auto &memc : servers) {
+ if (!check_memcached(opt, memc)) {
+ return false;
+ }
+ auto instance = memcached_server_instance_by_position(root, i++);
+ memcached_server_add(&memc, memcached_server_name(instance), memcached_server_port(instance));
+ }
- printf("\tNumber of Servers Analyzed : %u\n", server_count);
- printf("\tAverage Item Size (incl/overhead) : %u bytes\n", report->average_item_size);
+ latency_test(num_of_tests, servers);
- if (server_count == 1) {
- printf("\nFor a detailed report, you must supply multiple servers.\n");
- return;
+ for (auto &memc : servers) {
+ memcached_free(&memc);
}
- 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");
+ return true;
}
-static void options_parse(int argc, char *argv[]) {
- memcached_programs_help_st help_options[] = {
- {0},
- };
+static memcached_return_t print_stat(const memcached_instance_st *server,
+ const char *key, size_t key_length,
+ const char *value, size_t value_length, void *context) {
+ auto instance = static_cast<const memcached_instance_st **>(context);
- int option_index = 0;
+ if (*instance != server) {
+ *instance = server;
- 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;
+ std::cout << "Server: " << memcached_server_name(server)
+ << " (" << memcached_server_port(server) << ")\n";
+ }
- case OPT_VERBOSE: /* --verbose or -v */
- opt_verbose = true;
- break;
+ std::cout << "\t";
+ std::cout.write(key, key_length) << ": ";
+ std::cout.write(value, value_length) << "\n";
- case OPT_DEBUG: /* --debug or -d */
- opt_verbose = true;
- break;
+ return MEMCACHED_SUCCESS;
+}
- case OPT_BINARY:
- opt_binary = true;
- break;
+static bool memstat(const client_options &opt, memcached_st &memc, const char *arg) {
+ memcached_instance_st *context = nullptr;
+ auto rc = memcached_stat_execute(&memc, arg, print_stat, &context);
+ if (memcached_success(rc)) {
+ return true;
+ }
+ if (!opt.isset("quiet")) {
+ std::cerr << "Failed to 'STAT " << (arg ? arg : "") << "': ";
+ if (memcached_last_error(&memc)) {
+ std::cerr << memcached_last_error_message(&memc) << "\n";
+ } else {
+ std::cerr << memcached_strerror(&memc, rc) << "\n";
+ }
+ }
+ return false;
+}
- case OPT_SERVER_VERSION:
- opt_server_version = true;
- break;
+int main(int argc, char *argv[]) {
+ client_options opt{PROGRAM_NAME, PROGRAM_VERSION, PROGRAM_DESCRIPTION, "[stat ...]"};
- case OPT_VERSION: /* --version or -V */
- opt_version = true;
- break;
+ for (const auto &def : opt.defaults) {
+ if (def.opt.val != 'H') {
+ // no need for --hash
+ opt.add(def);
+ }
+ }
- case OPT_HELP: /* --help or -h */
- opt_help = true;
- break;
+ opt.add("args", 'A', required_argument, "Stat args. DEPRECATED: use positional arguments.");
+ opt.add("server-version", 'S', no_argument, "Print server version.");
+ opt.add("analyze", 'a', optional_argument, "Analyze server characteristics (options: default, latency).");
- case OPT_SERVERS: /* --servers or -s */
- opt_servers = strdup(optarg);
- break;
+ char **argp = nullptr;
+ if (!opt.parse(argc, argv, &argp)) {
+ exit(EXIT_FAILURE);
+ }
- case OPT_STAT_ARGS:
- stat_args = strdup(optarg);
- break;
+ memcached_st memc;
+ if (!check_memcached(opt, memc)) {
+ exit(EXIT_FAILURE);
+ }
- case OPT_ANALYZE: /* --analyze or -a */
- opt_analyze = true;
- analyze_mode = (optarg) ? strdup(optarg) : NULL;
- break;
+ if (!opt.apply(&memc)) {
+ memcached_free(&memc);
+ exit(EXIT_FAILURE);
+ }
- case OPT_QUIET:
- close_stdio();
- break;
+ auto exit_code = EXIT_SUCCESS;
+ if (opt.isset('S')) {
+ if (opt.isset("verbose")) {
+ std::cout << "Server versions:\n";
+ }
+ if (MEMCACHED_SUCCESS != memcached_version(&memc)) {
+ exit_code = EXIT_FAILURE;
+ }
+ memcached_server_fn cb[] = {&print_server_version};
+ memcached_server_cursor(&memc, cb, nullptr, 1);
+ goto done;
+ }
- case OPT_USERNAME:
- opt_username = optarg;
- opt_binary = true;
- break;
+ if (opt.isset("analyze")) {
+ const char *analyze = opt.argof("analyze");
+ if (analyze && strcmp(analyze, "default")) {
+ if (!strcmp(analyze, "latency")) {
+ if (!analyze_latency(opt, &memc)) {
+ exit_code = EXIT_FAILURE;
+ }
+ goto done;
+ }
- case OPT_PASSWD:
- opt_passwd = optarg;
- break;
+ if (!opt.isset("quiet")) {
+ std::cerr << "Unknown --analyze mode: '" << analyze << "'.\n";
+ }
+ }
- case '?':
- /* getopt_long already printed an error message. */
- exit(1);
- default:
- abort();
+ memcached_return_t rc;
+ auto stat = memcached_stat(&memc, nullptr, &rc);
+ if (!memcached_success(rc)) {
+ exit_code = EXIT_FAILURE;
+ if (!opt.isset("quiet")) {
+ std::cerr << memcached_last_error_message(&memc) << "\n";
+ }
+ } else if (!analyze_stat(opt, &memc, stat)) {
+ exit_code = EXIT_FAILURE;
}
+ memcached_stat_free(&memc, stat);
+ goto done;
}
- if (opt_version) {
- version_command(PROGRAM_NAME);
- exit(EXIT_SUCCESS);
+ if (!*argp || opt.isset('A')) {
+ if (!memstat(opt, memc, opt.argof('A'))) {
+ exit_code = EXIT_FAILURE;
+ }
}
-
- if (opt_help) {
- help_command(PROGRAM_NAME, PROGRAM_DESCRIPTION, long_options, help_options);
- exit(EXIT_SUCCESS);
+ for (auto arg = argp; *arg; ++arg) {
+ if (!memstat(opt, memc, *arg)) {
+ exit_code = EXIT_FAILURE;
+ }
}
+
+done:
+ memcached_free(&memc);
+ exit(exit_code);
}
projects / m6w6 / libmemcached / commitdiff
