/
agent_stats.c
1760 lines (1489 loc) · 63 KB
/
agent_stats.c
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/* -*- Mode: C; tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*- */
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <pthread.h>
#include <assert.h>
#include <math.h>
#include <limits.h>
#include <libconflate/conflate.h>
#include "memcached.h"
#include "cproxy.h"
#include "work.h"
#include "agent.h"
#ifdef REDIRECTS_FOR_MOCKS
#include "redirects.h"
#endif
// Local declarations.
//
static void add_stat_prefix(const void *dump_opaque,
const char *prefix,
const char *key,
const char *val);
static void add_stat_prefix_ase(const char *key, const uint16_t klen,
const char *val, const uint32_t vlen,
const void *cookie);
static void main_stats_collect(void *data0, void *data1);
static void work_stats_collect(void *data0, void *data1);
static void main_stats_reset(void *data0, void *data1);
static void work_stats_reset(void *data0, void *data1);
static void add_proxy_stats_td(proxy_stats_td *agg,
proxy_stats_td *x);
static void add_raw_key_stats(genhash_t *key_stats_map,
mcache *key_stats);
static void add_processed_key_stats(genhash_t *dest_map,
genhash_t *src_map);
static void add_proxy_stats(proxy_stats *agg,
proxy_stats *x);
static void add_stats_cmd(proxy_stats_cmd *agg,
proxy_stats_cmd *x);
static void add_stats_cmd_with_rescale(proxy_stats_cmd *agg,
const proxy_stats_cmd *x,
float rescale_agg,
float rescale_x);
void genhash_free_entry(const void *key,
const void *value,
void *user_data);
void map_pstd_foreach_emit(const void *key,
const void *value,
void *user_data);
void map_pstd_foreach_merge(const void *key,
const void *value,
void *user_data);
static void map_key_stats_foreach_free(const void *key,
const void *value,
void *user_data);
static void map_key_stats_foreach_emit(const void *key,
const void *value,
void *user_data);
static void map_key_stats_foreach_merge(const void *key,
const void *value,
void *user_data);
static void proxy_stats_dump_behavior(ADD_STAT add_stats,
conn *c,
const char *prefix,
proxy_behavior *b,
int level);
static void proxy_stats_dump_frontcache(ADD_STAT add_stats,
conn *c,
const char *prefix,
proxy *p);
static void proxy_stats_dump_pstd_stats(ADD_STAT add_stats,
conn *c,
const char *prefix,
proxy_stats *stats);
static void proxy_stats_dump_stats_cmd(ADD_STAT add_stats,
conn *c,
const char *prefix,
proxy_stats_cmd stats_cmd[][STATS_CMD_last]);
static void map_key_stats_foreach_dump(const void *key,
const void *value,
void *user_data);
struct main_stats_proxy_info {
char *name;
int port;
};
struct main_stats_collect_info {
proxy_main *m;
conflate_form_result *result;
char *prefix;
char *type;
bool do_settings;
bool do_stats;
bool do_zeros;
int nproxy;
struct main_stats_proxy_info *proxies;
};
static char *cmd_names[] = { // Keep sync'ed with enum_stats_cmd.
"get",
"get_key",
"set",
"add",
"replace",
"delete",
"append",
"prepend",
"incr",
"decr",
"flush_all",
"cas",
"stats",
"stats_reset",
"version",
"verbosity",
"quit",
"ERROR"
};
static char *cmd_type_names[] = { // Keep sync'ed with enum_stats_cmd_type.
"regular",
"quiet"
};
struct stats_gathering_pair {
genhash_t *map_pstd; // maps "<proxy-name>:<port>" strings to (proxy_stats_td *)
genhash_t *map_key_stats; // maps "<proxy-name>:<port>" strings to (genhash that maps key names to (struct key_stats *))
};
#ifndef REDIRECTS_FOR_MOCKS
static
#else
#undef collect_memcached_stats_for_proxy
#endif
void collect_memcached_stats_for_proxy(struct main_stats_collect_info *msci,
const char *proxy_name, int proxy_port) {
#ifdef MOXI_USE_LIBMEMCACHED
memcached_st mst;
memcached_create(&mst);
memcached_server_add(&mst, "127.0.0.1", proxy_port);
memcached_behavior_set(&mst, MEMCACHED_BEHAVIOR_TCP_NODELAY, 1);
memcached_return error;
memcached_stat_st *st = memcached_stat(&mst, NULL, &error);
if (st == NULL) {
goto out_free;
}
char bufk[500];
#define emit_s(key, val) \
snprintf(bufk, sizeof(bufk), "%u:%s:stats:%s", \
proxy_port, \
proxy_name != NULL ? proxy_name : "", key); \
conflate_add_field(msci->result, bufk, val);
char **keys = memcached_stat_get_keys(&mst, st, &error);
for (; *keys; keys++) {
char *key = *keys;
char *value = memcached_stat_get_value(&mst, st, key, &error);
if (value == NULL) {
continue;
}
emit_s(key, value);
free(value);
}
#undef emit_s
free(st);
out_free:
memcached_free(&mst);
#else // MOXI_USE_LIBMEMCACHED
(void) msci;
(void) proxy_name;
(void) proxy_port;
#endif // !MOXI_USE_LIBMEMCACHED
}
#ifdef REDIRECTS_FOR_MOCKS
#define collect_memcached_stats_for_proxy redirected_collect_memcached_stats_for_proxy
#endif
/* This callback is invoked by conflate on a conflate thread
* when it wants proxy stats.
*
* We use the work_queues to retrieve the info, so that normal
* runtime has fewer locks, at the cost of scatter/gather
* complexity to handle the proxy stats request.
*/
enum conflate_mgmt_cb_result on_conflate_get_stats(void *userdata,
conflate_handle_t *handle,
const char *cmd,
bool direct,
kvpair_t *form,
conflate_form_result *r)
{
(void)handle;
(void)cmd;
(void)direct;
assert(STATS_CMD_last == sizeof(cmd_names) / sizeof(char *));
assert(STATS_CMD_TYPE_last == sizeof(cmd_type_names) / sizeof(char *));
proxy_main *m = userdata;
assert(m);
assert(m->nthreads > 1);
LIBEVENT_THREAD *mthread = thread_by_index(0);
assert(mthread);
assert(mthread->work_queue);
char *type = get_simple_kvpair_val(form, "-subtype-");
bool do_all = (type == NULL ||
strlen(type) <= 0 ||
strcmp(type, "all") == 0);
struct main_stats_collect_info msci = {
.m = m,
.result = r,
.prefix = "",
.type = type,
.do_settings = (do_all || strcmp(type, "settings") == 0),
.do_stats = (do_all || strcmp(type, "stats") == 0),
.do_zeros = (type != NULL &&
strcmp(type, "all") == 0), // Only when explicit "all".
/* .nproxy = 0, */
.proxies = 0
};
char buf[800];
#define more_stat(spec, key, val) \
if (msci.do_zeros || val) { \
snprintf(buf, sizeof(buf), spec, val); \
conflate_add_field(r, key, buf); \
}
more_stat("%s", "main_version",
VERSION);
more_stat("%u", "main_nthreads",
m->nthreads);
if (msci.do_settings) {
conflate_add_field(r, "main_hostname", cproxy_hostname);
cproxy_dump_behavior_ex(&m->behavior, "main_behavior", 2,
add_stat_prefix, &msci);
}
if (msci.do_stats) {
more_stat("%llu", "main_configs",
(long long unsigned int) m->stat_configs);
more_stat("%llu", "main_config_fails",
(long long unsigned int) m->stat_config_fails);
more_stat("%llu", "main_proxy_starts",
(long long unsigned int) m->stat_proxy_starts);
more_stat("%llu", "main_proxy_start_fails",
(long long unsigned int) m->stat_proxy_start_fails);
more_stat("%llu", "main_proxy_existings",
(long long unsigned int) m->stat_proxy_existings);
more_stat("%llu", "main_proxy_shutdowns",
(long long unsigned int) m->stat_proxy_shutdowns);
}
#undef more_stat
if (msci.do_settings) {
struct main_stats_collect_info ase = msci;
ase.prefix = "memcached_settings";
process_stat_settings(add_stat_prefix_ase, &ase, NULL);
}
if (msci.do_stats) {
struct main_stats_collect_info ase = msci;
ase.prefix = "memcached_stats";
server_stats(add_stat_prefix_ase, &ase, NULL);
}
// Alloc here so the main listener thread has less work.
//
work_collect *ca = calloc(m->nthreads, sizeof(work_collect));
if (ca != NULL) {
int i;
for (i = 1; i < m->nthreads; i++) {
struct stats_gathering_pair *pair =
calloc(1, sizeof(struct stats_gathering_pair));
if (!pair) {
break;
}
// Each thread gets its own collection hashmap, which
// is keyed by each proxy's "binding:name", and whose
// values are proxy_stats_td.
//
if (!(pair->map_pstd = genhash_init(128, strhash_ops))) {
break;
}
// Key stats hashmap has same keys and
// genhash<string, struct key_stats *> as values.
//
if (!(pair->map_key_stats = genhash_init(128, strhash_ops))) {
break;
}
work_collect_init(&ca[i], -1, pair);
}
// Continue on the main listener thread.
//
if (i >= m->nthreads &&
work_send(mthread->work_queue, main_stats_collect,
&msci, ca)) {
// Wait for all the stats collecting to finish.
//
for (i = 1; i < m->nthreads; i++) {
work_collect_wait(&ca[i]);
}
assert(m->nthreads > 0);
if (msci.do_stats) {
struct stats_gathering_pair *end_pair = ca[1].data;
genhash_t *end_pstd = end_pair->map_pstd;
genhash_t *end_map_key_stats = end_pair->map_key_stats;
if (end_pstd != NULL) {
// Skip the first worker thread (index 1)'s results,
// because that's where we'll aggregate final results.
//
for (i = 2; i < m->nthreads; i++) {
struct stats_gathering_pair *pair = ca[i].data;
genhash_t *map_pstd = pair->map_pstd;
if (map_pstd != NULL) {
genhash_iter(map_pstd, map_pstd_foreach_merge,
end_pstd);
}
genhash_t *map_key_stats = pair->map_key_stats;
if (map_key_stats != NULL) {
genhash_iter(map_key_stats,
map_key_stats_foreach_merge,
end_map_key_stats);
}
}
genhash_iter(end_pstd, map_pstd_foreach_emit, &msci);
genhash_iter(end_map_key_stats,
map_key_stats_foreach_emit, &msci);
}
}
}
for (i = 0; i < msci.nproxy; i++) {
collect_memcached_stats_for_proxy(&msci,
msci.proxies[i].name,
msci.proxies[i].port);
free(msci.proxies[i].name);
}
free(msci.proxies);
for (i = 1; i < m->nthreads; i++) {
struct stats_gathering_pair *pair = ca[i].data;
if (!pair) {
continue;
}
genhash_t *map_pstd = pair->map_pstd;
if (map_pstd != NULL) {
genhash_iter(map_pstd, genhash_free_entry, NULL);
genhash_free(map_pstd);
}
genhash_t *map_key_stats = pair->map_key_stats;
if (map_key_stats != NULL) {
genhash_iter(map_key_stats, map_key_stats_foreach_free, NULL);
genhash_free(map_key_stats);
}
free(pair);
}
free(ca);
}
return RV_OK;
}
void map_pstd_foreach_merge(const void *key,
const void *value,
void *user_data) {
genhash_t *map_end_pstd = user_data;
if (key != NULL &&
map_end_pstd != NULL) {
proxy_stats_td *cur_pstd = (proxy_stats_td *) value;
proxy_stats_td *end_pstd = genhash_find(map_end_pstd, key);
if (cur_pstd != NULL &&
end_pstd != NULL) {
add_proxy_stats_td(end_pstd, cur_pstd);
}
}
}
void map_key_stats_foreach_free(const void *key,
const void *value,
void *user_data) {
(void)user_data;
assert(key);
assert(value);
free((void *)key);
genhash_t *map_key_stats = (genhash_t *)value;
genhash_iter(map_key_stats, genhash_free_entry, NULL);
genhash_free(map_key_stats);
}
void map_key_stats_foreach_merge(const void *key,
const void *value,
void *user_data) {
genhash_t *end_map_key_stats = user_data;
if (key != NULL) {
genhash_t *key_stats_hash = (genhash_t *) value;
genhash_t *end_key_stats = genhash_find(end_map_key_stats, key);
if (key_stats_hash != NULL && end_key_stats != NULL) {
add_processed_key_stats(key_stats_hash, end_key_stats);
}
}
}
static void proxy_stats_dump_behavior(ADD_STAT add_stats,
conn *c, const char *prefix,
proxy_behavior *b, int level) {
if (level >= 2) {
APPEND_PREFIX_STAT("cycle", "%u", b->cycle);
}
if (level >= 1) {
APPEND_PREFIX_STAT("downstream_max", "%u", b->downstream_max);
}
APPEND_PREFIX_STAT("downstream_weight", "%u", b->downstream_weight);
APPEND_PREFIX_STAT("downstream_retry", "%u", b->downstream_retry);
APPEND_PREFIX_STAT("downstream_protocol", "%d", b->downstream_protocol);
APPEND_PREFIX_STAT("downstream_timeout", "%ld", // In millisecs.
(b->downstream_timeout.tv_sec * 1000 +
b->downstream_timeout.tv_usec / 1000));
if (level >= 1) {
APPEND_PREFIX_STAT("wait_queue_timeout", "%ld", // In millisecs.
(b->wait_queue_timeout.tv_sec * 1000 +
b->wait_queue_timeout.tv_usec / 1000));
APPEND_PREFIX_STAT("time_stats", "%d", b->time_stats);
APPEND_PREFIX_STAT("front_cache_max", "%u", b->front_cache_max);
APPEND_PREFIX_STAT("front_cache_lifespan", "%u", b->front_cache_lifespan);
APPEND_PREFIX_STAT("front_cache_spec", "%s", b->front_cache_spec);
APPEND_PREFIX_STAT("front_cache_unspec", "%s", b->front_cache_unspec);
APPEND_PREFIX_STAT("key_stats_max", "%u", b->key_stats_max);
APPEND_PREFIX_STAT("key_stats_lifespan", "%u", b->key_stats_lifespan);
APPEND_PREFIX_STAT("key_stats_spec", "%s", b->key_stats_spec);
APPEND_PREFIX_STAT("key_stats_unspec", "%s", b->key_stats_unspec);
APPEND_PREFIX_STAT("optimize_set", "%s", b->optimize_set);
}
APPEND_PREFIX_STAT("usr", "%s", b->usr);
APPEND_PREFIX_STAT("host", "%s", b->host);
APPEND_PREFIX_STAT("port", "%d", b->port);
APPEND_PREFIX_STAT("bucket", "%s", b->bucket);
if (level >= 1) {
APPEND_PREFIX_STAT("port_listen", "%d", b->port_listen);
APPEND_PREFIX_STAT("default_bucket_name", "%s", b->default_bucket_name);
}
}
static void proxy_stats_dump_frontcache(ADD_STAT add_stats, conn *c,
const char *prefix, proxy *p) {
pthread_mutex_lock(p->front_cache.lock);
if (p->front_cache.map != NULL) {
APPEND_PREFIX_STAT("size", "%u", genhash_size(p->front_cache.map));
}
APPEND_PREFIX_STAT("max", "%u", p->front_cache.max);
APPEND_PREFIX_STAT("oldest_live", "%u", p->front_cache.oldest_live);
APPEND_PREFIX_STAT("tot_get_hits",
"%llu", (long long unsigned int) p->front_cache.tot_get_hits);
APPEND_PREFIX_STAT("tot_get_expires",
"%llu", (long long unsigned int) p->front_cache.tot_get_expires);
APPEND_PREFIX_STAT("tot_get_misses",
"%llu", (long long unsigned int) p->front_cache.tot_get_misses);
APPEND_PREFIX_STAT("tot_get_bytes",
"%llu", (long long unsigned int) p->front_cache.tot_get_bytes);
APPEND_PREFIX_STAT("tot_adds",
"%llu", (long long unsigned int) p->front_cache.tot_adds);
APPEND_PREFIX_STAT("tot_add_skips",
"%llu", (long long unsigned int) p->front_cache.tot_add_skips);
APPEND_PREFIX_STAT("tot_add_fails",
"%llu", (long long unsigned int) p->front_cache.tot_add_fails);
APPEND_PREFIX_STAT("tot_add_bytes",
"%llu", (long long unsigned int) p->front_cache.tot_add_bytes);
APPEND_PREFIX_STAT("tot_deletes",
"%llu", (long long unsigned int) p->front_cache.tot_deletes);
APPEND_PREFIX_STAT("tot_evictions",
"%llu", (long long unsigned int) p->front_cache.tot_evictions);
pthread_mutex_unlock(p->front_cache.lock);
}
static void proxy_stats_dump_pstd_stats(ADD_STAT add_stats,
conn *c, const char *prefix,
proxy_stats *pstats) {
assert(pstats != NULL);
APPEND_PREFIX_STAT("num_upstream",
"%llu", (long long unsigned int) pstats->num_upstream);
APPEND_PREFIX_STAT("tot_upstream",
"%llu", (long long unsigned int) pstats->tot_upstream);
APPEND_PREFIX_STAT("num_downstream_conn",
"%llu", (long long unsigned int) pstats->num_downstream_conn);
APPEND_PREFIX_STAT("tot_downstream_conn",
"%llu", (long long unsigned int) pstats->tot_downstream_conn);
APPEND_PREFIX_STAT("tot_downstream_released",
"%llu", (long long unsigned int) pstats->tot_downstream_released);
APPEND_PREFIX_STAT("tot_downstream_reserved",
"%llu", (long long unsigned int) pstats->tot_downstream_reserved);
APPEND_PREFIX_STAT("tot_downstream_reserved_time",
"%llu", (long long unsigned int) pstats->tot_downstream_reserved_time);
APPEND_PREFIX_STAT("max_downstream_reserved_time",
"%llu", (long long unsigned int) pstats->max_downstream_reserved_time);
APPEND_PREFIX_STAT("tot_downstream_freed",
"%llu", (long long unsigned int) pstats->tot_downstream_freed);
APPEND_PREFIX_STAT("tot_downstream_quit_server",
"%llu", (long long unsigned int) pstats->tot_downstream_quit_server);
APPEND_PREFIX_STAT("tot_downstream_max_reached",
"%llu", (long long unsigned int) pstats->tot_downstream_max_reached);
APPEND_PREFIX_STAT("tot_downstream_create_failed",
"%llu", (long long unsigned int) pstats->tot_downstream_create_failed);
APPEND_PREFIX_STAT("tot_downstream_connect",
"%llu", (long long unsigned int) pstats->tot_downstream_connect);
APPEND_PREFIX_STAT("tot_downstream_connect_failed",
"%llu", (long long unsigned int) pstats->tot_downstream_connect_failed);
APPEND_PREFIX_STAT("tot_downstream_auth",
"%llu", (long long unsigned int) pstats->tot_downstream_auth);
APPEND_PREFIX_STAT("tot_downstream_auth_failed",
"%llu", (long long unsigned int) pstats->tot_downstream_auth_failed);
APPEND_PREFIX_STAT("tot_downstream_bucket",
"%llu", (long long unsigned int) pstats->tot_downstream_bucket);
APPEND_PREFIX_STAT("tot_downstream_bucket_failed",
"%llu", (long long unsigned int) pstats->tot_downstream_bucket_failed);
APPEND_PREFIX_STAT("tot_downstream_propagate_failed",
"%llu", (long long unsigned int) pstats->tot_downstream_propagate_failed);
APPEND_PREFIX_STAT("tot_downstream_close_on_upstream_close",
"%llu", (long long unsigned int) pstats->tot_downstream_close_on_upstream_close);
APPEND_PREFIX_STAT("tot_downstream_timeout",
"%llu", (long long unsigned int) pstats->tot_downstream_timeout);
APPEND_PREFIX_STAT("tot_wait_queue_timeout",
"%llu", (long long unsigned int) pstats->tot_wait_queue_timeout);
APPEND_PREFIX_STAT("tot_assign_downstream",
"%llu", (long long unsigned int) pstats->tot_assign_downstream);
APPEND_PREFIX_STAT("tot_assign_upstream",
"%llu", (long long unsigned int) pstats->tot_assign_upstream);
APPEND_PREFIX_STAT("tot_assign_recursion",
"%llu", (long long unsigned int) pstats->tot_assign_recursion);
APPEND_PREFIX_STAT("tot_reset_upstream_avail",
"%llu", (long long unsigned int) pstats->tot_reset_upstream_avail);
APPEND_PREFIX_STAT("tot_multiget_keys",
"%llu", (long long unsigned int) pstats->tot_multiget_keys);
APPEND_PREFIX_STAT("tot_multiget_keys_dedupe",
"%llu", (long long unsigned int) pstats->tot_multiget_keys_dedupe);
APPEND_PREFIX_STAT("tot_multiget_bytes_dedupe",
"%llu", (long long unsigned int) pstats->tot_multiget_bytes_dedupe);
APPEND_PREFIX_STAT("tot_optimize_sets",
"%llu", (long long unsigned int) pstats->tot_optimize_sets);
APPEND_PREFIX_STAT("tot_optimize_self",
"%llu", (long long unsigned int) pstats->tot_optimize_self);
APPEND_PREFIX_STAT("tot_retry",
"%llu", (long long unsigned int) pstats->tot_retry);
APPEND_PREFIX_STAT("tot_retry_time",
"%llu", (long long unsigned int) pstats->tot_retry_time);
APPEND_PREFIX_STAT("max_retry_time",
"%llu", (long long unsigned int) pstats->max_retry_time);
APPEND_PREFIX_STAT("tot_retry_vbucket",
"%llu", (long long unsigned int) pstats->tot_retry_vbucket);
APPEND_PREFIX_STAT("tot_upstream_paused",
"%llu", (long long unsigned int) pstats->tot_upstream_paused);
APPEND_PREFIX_STAT("tot_upstream_unpaused",
"%llu", (long long unsigned int) pstats->tot_upstream_unpaused);
APPEND_PREFIX_STAT("err_oom",
"%llu", (long long unsigned int) pstats->err_oom);
APPEND_PREFIX_STAT("err_upstream_write_prep",
"%llu", (long long unsigned int) pstats->err_upstream_write_prep);
APPEND_PREFIX_STAT("err_downstream_write_prep",
"%llu", (long long unsigned int) pstats->err_downstream_write_prep);
}
static void proxy_stats_dump_stats_cmd(ADD_STAT add_stats, conn *c,
const char *prefix,
proxy_stats_cmd stats_cmd[][STATS_CMD_last]) {
char keybuf[128];
for (int j = 0; j < STATS_CMD_TYPE_last; j++) {
for (int k = 0; k < STATS_CMD_last; k++) {
if (stats_cmd[j][k].seen != 0) {
snprintf(keybuf, sizeof(keybuf), "%s_%s:%s",
cmd_type_names[j], cmd_names[k], "seen");
APPEND_PREFIX_STAT(keybuf,
"%llu", (long long unsigned int) stats_cmd[j][k].seen);
}
if (stats_cmd[j][k].hits != 0) {
snprintf(keybuf, sizeof(keybuf), "%s_%s:%s",
cmd_type_names[j], cmd_names[k], "hits");
APPEND_PREFIX_STAT(keybuf,
"%llu", (long long unsigned int) stats_cmd[j][k].hits);
}
if (stats_cmd[j][k].misses != 0) {
snprintf(keybuf, sizeof(keybuf), "%s_%s:%s",
cmd_type_names[j], cmd_names[k], "misses");
APPEND_PREFIX_STAT(keybuf,
"%llu", (long long unsigned int) stats_cmd[j][k].misses);
}
if (stats_cmd[j][k].read_bytes != 0) {
snprintf(keybuf, sizeof(keybuf), "%s_%s:%s",
cmd_type_names[j], cmd_names[k], "read_bytes");
APPEND_PREFIX_STAT(keybuf,
"%llu", (long long unsigned int) stats_cmd[j][k].read_bytes);
}
if (stats_cmd[j][k].write_bytes != 0) {
snprintf(keybuf, sizeof(keybuf), "%s_%s:%s",
cmd_type_names[j], cmd_names[k], "write_bytes");
APPEND_PREFIX_STAT(keybuf,
"%llu", (long long unsigned int) stats_cmd[j][k].write_bytes);
}
if (stats_cmd[j][k].cas != 0) {
snprintf(keybuf, sizeof(keybuf), "%s_%s:%s",
cmd_type_names[j], cmd_names[k], "cas");
APPEND_PREFIX_STAT(keybuf,
"%llu", (long long unsigned int) stats_cmd[j][k].cas);
}
}
}
}
struct key_stats_dump_state {
const char *prefix;
ADD_STAT add_stats;
conn *conn;
struct proxy_stats_cmd_info *pscip;
};
static void map_key_stats_foreach_dump(const void *key, const void *value,
void *user_data) {
const char *name = (const char *)key;
assert(name != NULL);
struct key_stats *kstats = (struct key_stats *)value;
assert(kstats != NULL);
struct key_stats_dump_state *state =
(struct key_stats_dump_state *)user_data;
assert(state != NULL);
assert(strcmp(name, kstats->key) == 0);
ADD_STAT add_stats = state->add_stats;
conn *c = state->conn;
char prefix[200+KEY_MAX_LENGTH];
snprintf(prefix, sizeof(prefix), "%s:%s", state->prefix, name);
proxy_stats_dump_stats_cmd(add_stats, c, prefix, kstats->stats_cmd);
APPEND_PREFIX_STAT("added_at_msec", "%u", kstats->added_at);
}
void proxy_stats_dump_basic(ADD_STAT add_stats, conn *c, const char *prefix) {
APPEND_PREFIX_STAT("version", "%s", VERSION);
APPEND_PREFIX_STAT("nthreads", "%d", settings.num_threads);
APPEND_PREFIX_STAT("hostname", "%s", cproxy_hostname);
}
void proxy_stats_dump_proxy_main(ADD_STAT add_stats, conn *c,
struct proxy_stats_cmd_info *pscip) {
assert(c != NULL);
proxy_td *ptd = c->extra;
if (ptd == NULL ||
ptd->proxy == NULL ||
ptd->proxy->main == NULL) {
return;
}
proxy_main *pm = ptd->proxy->main;
if (pscip->do_info) {
const char *prefix = "proxy_main:";
APPEND_PREFIX_STAT("conf_type", "%s",
(pm->conf_type==PROXY_CONF_TYPE_STATIC ? "static" : "dynamic"));
}
if (pscip->do_behaviors) {
proxy_stats_dump_behavior(add_stats, c, "proxy_main:behavior:",
&pm->behavior, 2);
}
if (pscip->do_stats) {
const char *prefix = "proxy_main:stats:";
APPEND_PREFIX_STAT("stat_configs",
"%llu", (long long unsigned int) pm->stat_configs);
APPEND_PREFIX_STAT("stat_config_fails",
"%llu", (long long unsigned int) pm->stat_config_fails);
APPEND_PREFIX_STAT("stat_proxy_starts",
"%llu", (long long unsigned int) pm->stat_proxy_starts);
APPEND_PREFIX_STAT("stat_proxy_start_fails",
"%llu", (long long unsigned int) pm->stat_proxy_start_fails);
APPEND_PREFIX_STAT("stat_proxy_existings",
"%llu", (long long unsigned int) pm->stat_proxy_existings);
APPEND_PREFIX_STAT("stat_proxy_shutdowns",
"%llu", (long long unsigned int) pm->stat_proxy_shutdowns);
}
}
void proxy_stats_dump_proxies(ADD_STAT add_stats, conn *c,
struct proxy_stats_cmd_info *pscip) {
assert(c != NULL);
proxy_td *ptd = c->extra;
if (ptd == NULL ||
ptd->proxy == NULL ||
ptd->proxy->main == NULL) {
return;
}
proxy_main *pm = ptd->proxy->main;
char prefix[200];
if (pthread_mutex_trylock(&pm->proxy_main_lock) != 0) {
/* Do not dump proxy stats
* if dynamic reconfiguration is currently executing by other thread.
*/
return;
}
for (proxy *p = pm->proxy_head; p != NULL; p = p->next) {
pthread_mutex_lock(&p->proxy_lock);
if (pscip->do_info) {
snprintf(prefix, sizeof(prefix), "%u:%s:info:", p->port, p->name);
APPEND_PREFIX_STAT("port", "%u", p->port);
APPEND_PREFIX_STAT("name", "%s", p->name);
char *buf = trimstrdup(p->config);
if (buf != NULL) {
// Remove embedded newlines, as config might be a JSON string.
char *slow = buf;
for (char *fast = buf; *fast != '\0'; fast++) {
*slow = *fast;
if (*slow != '\n' && *slow != '\r') {
slow++;
}
}
*slow = '\0';
APPEND_PREFIX_STAT("config", "%s", buf);
free(buf);
}
APPEND_PREFIX_STAT("config_ver", "%u", p->config_ver);
APPEND_PREFIX_STAT("behaviors_num", "%u", p->behavior_pool.num);
}
if (pscip->do_behaviors) {
snprintf(prefix, sizeof(prefix), "%u:%s:behavior:",
p->port, p->name);
proxy_stats_dump_behavior(add_stats, c, prefix,
&p->behavior_pool.base, 1);
for (int i = 0; i < p->behavior_pool.num; i++) {
snprintf(prefix, sizeof(prefix), "%u:%s:behavior-%u:",
p->port, p->name, i);
proxy_stats_dump_behavior(add_stats, c, prefix,
&p->behavior_pool.arr[i], 0);
}
}
if (pscip->do_stats) {
snprintf(prefix, sizeof(prefix), "%u:%s:stats:", p->port, p->name);
APPEND_PREFIX_STAT("listening", "%llu",
(long long unsigned int) p->listening);
APPEND_PREFIX_STAT("listening_failed", "%llu",
(long long unsigned int) p->listening_failed);
}
pthread_mutex_unlock(&p->proxy_lock);
if (pscip->do_frontcache) {
snprintf(prefix, sizeof(prefix), "%u:%s:frontcache:",
p->port, p->name);
proxy_stats_dump_frontcache(add_stats, c, prefix, p);
}
if (pscip->do_stats) {
proxy_stats_td *pstd = calloc(1, sizeof(proxy_stats_td));
if (pstd != NULL) {
pthread_mutex_lock(&p->proxy_lock);
for (int i = 1; i < pm->nthreads; i++) {
proxy_td *thread_ptd = &p->thread_data[i];
if (thread_ptd != NULL) {
add_proxy_stats_td(pstd, &thread_ptd->stats);
}
}
pthread_mutex_unlock(&p->proxy_lock);
snprintf(prefix, sizeof(prefix), "%u:%s:pstd_stats:",
p->port, p->name);
proxy_stats_dump_pstd_stats(add_stats, c, prefix, &pstd->stats);
snprintf(prefix, sizeof(prefix), "%u:%s:pstd_stats_cmd:",
p->port, p->name);
proxy_stats_dump_stats_cmd(add_stats, c, prefix,
pstd->stats_cmd);
free(pstd);
}
}
if (pscip->do_keystats) {
/* TODO: Test is needed */
genhash_t *key_stats_map = NULL;
if (key_stats_map != NULL) {
pthread_mutex_lock(&p->proxy_lock);
for (int i = 1; i < pm->nthreads; i++) {
proxy_td *thread_ptd = &p->thread_data[i];
if (ptd != NULL) {
add_raw_key_stats(key_stats_map, &thread_ptd->key_stats);
}
}
pthread_mutex_unlock(&p->proxy_lock);
snprintf(prefix, sizeof(prefix), "%u:%s:key_stats:",
p->port, p->name);
struct key_stats_dump_state state = { .prefix = prefix,
.add_stats = add_stats,
.conn = c,
.pscip = pscip };
genhash_iter(key_stats_map, map_key_stats_foreach_dump, &state);
genhash_free(key_stats_map);
}
}
}
pthread_mutex_unlock(&pm->proxy_main_lock);
}
/* Must be invoked on the main listener thread.
*
* Puts stats gathering work on every worker thread's work_queue.
*/
static void main_stats_collect(void *data0, void *data1) {
struct main_stats_collect_info *msci = data0;
assert(msci);
assert(msci->result);
proxy_main *m = msci->m;
assert(m);
assert(m->nthreads > 1);
work_collect *ca = data1;
assert(ca);
assert(is_listen_thread());
struct main_stats_collect_info ase = *msci;
ase.prefix = "";
int sent = 0;
int nproxy = 0;
char bufk[200];
char bufv[4000];
pthread_mutex_lock(&m->proxy_main_lock);
for (proxy *p = m->proxy_head; p != NULL; p = p->next) {
nproxy++;
#define emit_s(key, val) \
snprintf(bufk, sizeof(bufk), "%u:%s:%s", \
p->port, \
p->name != NULL ? p->name : "", key); \
conflate_add_field(msci->result, bufk, val);
#define emit_f(key, fmtv, val) \
snprintf(bufv, sizeof(bufv), fmtv, val); \
emit_s(key, bufv);
pthread_mutex_lock(&p->proxy_lock);
emit_f("port", "%u", p->port);
emit_s("name", p->name);
emit_s("config", p->config);
emit_f("config_ver", "%u", p->config_ver);
emit_f("behaviors_num", "%u", p->behavior_pool.num);
if (msci->do_settings) {
snprintf(bufk, sizeof(bufk),
"%u:%s:behavior", p->port, p->name);
cproxy_dump_behavior_ex(&p->behavior_pool.base, bufk, 1,
add_stat_prefix, &ase);
for (int i = 0; i < p->behavior_pool.num; i++) {
snprintf(bufk, sizeof(bufk),
"%u:%s:behavior-%u", p->port, p->name, i);
cproxy_dump_behavior_ex(&p->behavior_pool.arr[i], bufk, 0,
add_stat_prefix, &ase);
}
}
if (msci->do_stats) {
emit_f("listening",
"%llu", (long long unsigned int) p->listening);
emit_f("listening_failed",
"%llu", (long long unsigned int) p->listening_failed);
}
pthread_mutex_unlock(&p->proxy_lock);
// Emit front_cache stats.
//
if (msci->do_stats) {
pthread_mutex_lock(p->front_cache.lock);
if (p->front_cache.map != NULL) {
emit_f("front_cache_size", "%u", genhash_size(p->front_cache.map));
}
emit_f("front_cache_max",
"%u", p->front_cache.max);
emit_f("front_cache_oldest_live",
"%u", p->front_cache.oldest_live);
emit_f("front_cache_tot_get_hits",
"%llu",
(long long unsigned int) p->front_cache.tot_get_hits);
emit_f("front_cache_tot_get_expires",
"%llu",
(long long unsigned int) p->front_cache.tot_get_expires);
emit_f("front_cache_tot_get_misses",
"%llu",
(long long unsigned int) p->front_cache.tot_get_misses);
emit_f("front_cache_tot_get_bytes",
"%llu",
(long long unsigned int) p->front_cache.tot_get_bytes);
emit_f("front_cache_tot_adds",
"%llu",
(long long unsigned int) p->front_cache.tot_adds);
emit_f("front_cache_tot_add_skips",
"%llu",
(long long unsigned int) p->front_cache.tot_add_skips);
emit_f("front_cache_tot_add_fails",
"%llu",
(long long unsigned int) p->front_cache.tot_add_fails);
emit_f("front_cache_tot_add_bytes",
"%llu",
(long long unsigned int) p->front_cache.tot_add_bytes);
emit_f("front_cache_tot_deletes",
"%llu",
(long long unsigned int) p->front_cache.tot_deletes);
emit_f("front_cache_tot_evictions",
"%llu",
(long long unsigned int) p->front_cache.tot_evictions);
pthread_mutex_unlock(p->front_cache.lock);
}
}
pthread_mutex_unlock(&m->proxy_main_lock);
// Starting at 1 because 0 is the main listen thread.
//
for (int i = 1; i < m->nthreads; i++) {