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stratcon_jlog_streamer.c
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stratcon_jlog_streamer.c
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/*
* Copyright (c) 2007, OmniTI Computer Consulting, Inc.
* All rights reserved.
* Copyright (c) 2015-2017, Circonus, Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name OmniTI Computer Consulting, Inc. nor the names
* of its contributors may be used to endorse or promote products
* derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <mtev_defines.h>
#include <unistd.h>
#include <ctype.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/socket.h>
#ifdef HAVE_SYS_FILIO_H
#include <sys/filio.h>
#endif
#include <netinet/in.h>
#include <sys/un.h>
#include <arpa/inet.h>
#include <eventer/eventer.h>
#include <mtev_conf.h>
#include <mtev_hash.h>
#include <mtev_log.h>
#include <mtev_getip.h>
#include <mtev_rest.h>
#include <mtev_json.h>
#include <mtev_stats.h>
#include <mtev_consul.h>
#include <mtev_curl.h>
#include "noit_mtev_bridge.h"
#include "stratcon_dtrace_probes.h"
#include "noit_jlog_listener.h"
#include "stratcon_datastore.h"
#include "stratcon_jlog_streamer.h"
#include "stratcon_iep.h"
static mtev_log_stream_t jlog_streamer_err = NULL;
static mtev_log_stream_t jlog_streamer_deb = NULL;
pthread_mutex_t noits_lock;
mtev_hash_table noits;
pthread_mutex_t noit_ip_by_cn_lock;
mtev_hash_table noit_ip_by_cn;
struct noit_meta {
char *cn;
unsigned short port;
char target[INET6_ADDRSTRLEN];
int storage_svc_idx;
int transient_svc_idx;
mtev_hash_table *tags;
mtev_hash_table *meta;
};
static void consul_start(struct noit_meta *tgt, bool launch);
struct noit_meta *noit_meta_new(const char *cn, const char *target, unsigned short port) {
struct noit_meta *n = calloc(1, sizeof(*n));
n->cn = strdup(cn);
n->port = port;
if(target) strlcpy(n->target, target, sizeof(n->target));
n->tags = calloc(1, sizeof(*n->tags));
mtev_hash_init(n->tags);
mtev_hash_dict_store(n->tags, "cn", cn);
n->meta = calloc(1, sizeof(*n->meta));
mtev_hash_init(n->meta);
return n;
}
static void noit_meta_free(void *vnm) {
struct noit_meta *n = (struct noit_meta *)vnm;
mtev_hash_destroy(n->tags, free, free);
free(n->tags);
mtev_hash_destroy(n->meta, free, free);
free(n->meta);
free(n->cn);
free(n);
}
static const char *extract_key(const mtev_json_object *o, const char *path) {
char *path_copy = strdup(path);
char *brk = NULL;
for(const char *cp = strtok_r(path_copy, ".", &brk);
cp; cp = strtok_r(NULL, ".", &brk)) {
if(!mtev_json_object_is_type(o, json_type_object)) return NULL;
o = mtev_json_object_object_get(o, cp);
}
return mtev_json_object_get_string(o);
}
static bool dict_is_different(mtev_hash_table *a, mtev_hash_table *b) {
if(mtev_hash_size(a) != mtev_hash_size(b)) return true;
mtev_hash_iter iter = MTEV_HASH_ITER_ZERO;
while(mtev_hash_adv(a, &iter)) {
const char *bval = mtev_hash_dict_get(b, iter.key.str);
if(!bval) return true;
if(strcmp(iter.value.str, bval)) return true;
}
return false;
}
static void refresh_meta_from_json(const char *cn, mtev_json_object *o) {
mtev_hash_table tags, meta;
if(!mtev_json_object_is_type(o, json_type_object)) return;
mtev_hash_init(&tags);
mtev_hash_init(&meta);
#define META(key, path) do { \
const char *_val; \
if(NULL != (_val = extract_key(o, path))) { \
mtev_hash_dict_store(&meta, key, _val); \
} \
} while(0)
META("noit_version", "version");
META("mtev_version", "mtev_version");
META("kernel_type", "unameRun.sysname");
META("kernel_arch", "unameRun.machine");
META("kernel_release", "unameRun.release");
mtev_hash_dict_store(&tags, "cn", cn);
mtev_json_object *modules = mtev_json_object_object_get(o, "modules");
if(modules && mtev_json_object_is_type(modules, json_type_object)) {
mtev_json_object_object_foreach(modules, key, val) {
const char *type = extract_key(val, "type");
if(!strcmp(type, "module")) {
char tagname[128];
snprintf(tagname, sizeof(tagname), "check:%s", key);
mtev_hash_dict_store(&tags, tagname, "");
}
}
}
pthread_mutex_lock(&noit_ip_by_cn_lock);
bool changed = false;
void *vnm = NULL;
if(mtev_hash_retrieve(&noit_ip_by_cn, cn, strlen(cn), &vnm)) {
struct noit_meta *nm = vnm;
if(dict_is_different(nm->tags, &tags)) {
mtev_hash_delete_all(nm->tags, free, free);
mtev_hash_merge_as_dict(nm->tags, &tags);
changed = true;
}
if(dict_is_different(nm->meta, &meta)) {
mtev_hash_delete_all(nm->meta, free, free);
mtev_hash_merge_as_dict(nm->meta, &meta);
changed = true;
}
if(changed) consul_start(nm, false);
}
pthread_mutex_unlock(&noit_ip_by_cn_lock);
mtev_hash_destroy(&tags, free, free);
mtev_hash_destroy(&meta, free, free);
}
static uuid_t self_stratcon_id;
static char self_stratcon_hostname[256] = "\0";
static struct sockaddr_in self_stratcon_ip;
static mtev_boolean stratcon_selfcheck_extended_id = mtev_true;
static struct timeval DEFAULT_NOIT_PERIOD_TV = { 5UL, 0UL };
void stratcon_foreach_noit(void (*f)(void *, const char *, const char *), void *c) {
pthread_mutex_lock(&noits_lock);
mtev_hash_iter iter = MTEV_HASH_ITER_ZERO;
while(mtev_hash_adv(&noits, &iter)) {
mtev_connection_ctx_t *ctx = iter.value.ptr;
const char *cn = mtev_hash_dict_get(ctx->config, "cn");
f(c, cn, ctx->remote_str);
}
pthread_mutex_unlock(&noits_lock);
}
static stats_ns_t *iep_ns, *durable_ns;
struct jlog_stream_stats {
stats_handle_t *total_events;
stats_handle_t *total_bytes_read;
stats_handle_t *last_event_age;
stats_handle_t *connection_age;
stats_handle_t *jlog_id;
stats_handle_t *batch_size;
stats_handle_t *batch_read_latency;
stats_handle_t *batch_commit_latency;
};
mtev_hash_table noit_stats_iep; /* this is persistent */
mtev_hash_table noit_stats_durable; /* this is persistent */
mtev_hash_table noit_consul_service;
long WARNING_DELAY_MS = 30 * 1000;
long WARNING_SESSION_TIME_MS = 10 * 1000;
static void consul_meta_updater(void) {
char *cn = eventer_aco_arg();
char *ca_chain = NULL, *cert = NULL, *key = NULL;
mtevL(mtev_error, "CONSUL_META_UPDATER[%s] starting\n", cn);
eventer_aco_sleep(&(struct timeval){ 1UL, 0UL });
while(1) {
if(!ca_chain) {
pthread_mutex_lock(&noits_lock);
mtev_hash_iter iter = MTEV_HASH_ITER_ZERO;
/* snag a copy of the sslconfig elements to use with curl */
while(ca_chain == NULL && mtev_hash_adv(&noits, &iter)) {
mtev_connection_ctx_t *conn = iter.value.ptr;
if(conn && conn->sslconfig) {
ca_chain = mtev_hash_dict_get(conn->sslconfig, "ca_chain");
cert = mtev_hash_dict_get(conn->sslconfig, "certificate");
key = mtev_hash_dict_get(conn->sslconfig, "key");
}
}
pthread_mutex_unlock(&noits_lock);
if(ca_chain) ca_chain = strdup(ca_chain);
char *cert_old = cert;
if(cert) cert = strdup(cert_old);
free(cert_old);
char *key_old = key;
if(key) key = strdup(key);
free(key_old);
}
char url[512];
mtev_curl_handle_t *ch = mtev_curl_easy_aco(false);
CURL *curl = mtev_curl_handle_get_easy_handle(ch);
struct curl_slist *connect_to = NULL;
pthread_mutex_lock(&noit_ip_by_cn_lock);
void *vtgt = NULL;
struct noit_meta *live = NULL;
if(mtev_hash_retrieve(&noit_ip_by_cn, cn, strlen(cn), &vtgt)) {
char connect_to_str[256];
live = vtgt;
snprintf(url, sizeof(url), "https://%s:%u/capa.json", live->cn, live->port);
snprintf(connect_to_str, sizeof(connect_to_str), "%s:%u:%s:%u", live->cn, live->port, live->target, live->port);
connect_to = curl_slist_append(connect_to, connect_to_str);
}
pthread_mutex_unlock(&noit_ip_by_cn_lock);
if(live) {
curl_easy_setopt(curl, CURLOPT_URL, url);
curl_easy_setopt(curl, CURLOPT_CONNECT_TO, connect_to);
if(ca_chain) curl_easy_setopt(curl, CURLOPT_CAINFO, ca_chain);
if(cert && key) {
curl_easy_setopt(curl, CURLOPT_SSLCERT, cert);
curl_easy_setopt(curl, CURLOPT_SSLKEY, key);
}
mtev_curl_perform_aco(ch);
size_t buffer_len = 0;
const char *buffer = mtev_curl_handle_get_buffer(ch, &buffer_len);
if(buffer_len) {
mtev_json_object *obj = mtev_json_tokener_parse_len(buffer, buffer_len, NULL);
if(obj) {
refresh_meta_from_json(cn, obj);
MJ_DROP(obj);
}
}
}
curl_slist_free_all(connect_to);
mtev_curl_handle_free_aco(ch);
if(!live) break;
eventer_aco_sleep(&(struct timeval){ 5UL, 0UL });
}
mtevL(mtev_error, "CONSUL_META_UPDATER[%s] ending\n", cn);
free(ca_chain);
free(cn);
}
/* consul actuation */
static void consul_update(const char *cn, bool is_storage, bool disconnected,
int64_t last_event_ms, int64_t session_duiration_ms) {
if(mtev_consul_service_alloc_available()) {
service_register *sr = mtev_consul_service_registry(cn);
if(!sr) return;
void *vtgt = NULL;
pthread_mutex_lock(&noit_ip_by_cn_lock);
if(mtev_hash_retrieve(&noit_ip_by_cn, cn, strlen(cn),
&vtgt)) {
struct noit_meta *tgt = vtgt;
int svc_idx = is_storage ? tgt->storage_svc_idx : tgt->transient_svc_idx;
if(svc_idx >= 0) {
char msg[256];
if(disconnected) {
mtev_consul_set_critical(sr, svc_idx, "disconnected");
}
else if(last_event_ms > WARNING_DELAY_MS) {
snprintf(msg, sizeof(msg), "data delayed: delayed %fs, up %fs",
(double)last_event_ms/1000.0, (double)session_duiration_ms/1000.0);
mtev_consul_set_warning(sr, svc_idx, msg);
}
else if(session_duiration_ms < WARNING_SESSION_TIME_MS) {
snprintf(msg, sizeof(msg), "session unstable: delayed %fs, up %fs",
(double)last_event_ms/1000.0, (double)session_duiration_ms/1000.0);
mtev_consul_set_warning(sr, svc_idx, msg);
}
else {
snprintf(msg, sizeof(msg), "feed current: delayed %fs, up %fs",
(double)last_event_ms/1000.0, (double)session_duiration_ms/1000.0);
mtev_consul_set_passing(sr, svc_idx, msg);
}
}
}
pthread_mutex_unlock(&noit_ip_by_cn_lock);
}
}
static void consul_start(struct noit_meta *tgt, bool launch) {
if(mtev_consul_service_alloc_available()) {
if(strlen(tgt->target)) { /* we only start if we have an address */
mtev_consul_service *service =
mtev_consul_service_alloc("noit", tgt->cn, tgt->target, tgt->port,
tgt->tags, false, tgt->meta, false);
mtev_consul_service_check_https(service, "CAPA", "/capa.json", "GET", tgt->cn, true, 10, NULL, 60*30);
if(stratcon_datastore_get_enabled()) {
tgt->storage_svc_idx = mtev_consul_service_check_push(service, "Storage Feed", 10, 0);
}
if(stratcon_iep_get_enabled()) {
tgt->transient_svc_idx = mtev_consul_service_check_push(service, "Alerting Feed", 10, 0);
}
mtev_consul_register(service);
service_register *sr = mtev_consul_service_registry(tgt->cn);
if(sr) {
if(tgt->storage_svc_idx >= 0) mtev_consul_set_critical(sr, tgt->storage_svc_idx, "unknown");
if(tgt->transient_svc_idx >= 0) mtev_consul_set_critical(sr, tgt->transient_svc_idx, "unknown");
}
if(launch) eventer_aco_start(consul_meta_updater, strdup(tgt->cn));
}
}
}
static void consul_reset(const char *cn) {
if(mtev_consul_service_registry_available()) {
service_register *sr = mtev_consul_service_registry(cn);
if(sr) {
struct noit_meta *meta = NULL;
void *vtgt = NULL;
pthread_mutex_lock(&noit_ip_by_cn_lock);
if(mtev_hash_retrieve(&noit_ip_by_cn, cn, strlen(cn),
&vtgt)) {
meta = (struct noit_meta *)vtgt;
strlcpy(meta->target, "unknown", sizeof(meta->target));
meta->port = 0;
consul_start(meta, false);
} else {
meta = noit_meta_new(cn, "unknown", 0);
mtev_hash_store(&noit_ip_by_cn, meta->cn, strlen(meta->cn), meta);
consul_start(meta, true);
}
pthread_mutex_unlock(&noit_ip_by_cn_lock);
} else {
mtevL(mtev_error, "No consul service instance %s\n", cn);
}
}
}
static void consul_stop(void *cn) {
if(mtev_consul_service_registry_available()) {
service_register *sr = mtev_consul_service_registry(cn);
if(sr) {
mtev_consul_service_register_deregister(sr);
}
}
}
static mtev_hook_return_t
consul_proxy_hook(void *closure, const char *id, int family, struct sockaddr *addr, bool up) {
if(!strncmp(id, "noit/", 5)) {
int len;
struct noit_meta tgt;
const char *cn = id + 5;
void *vtgt = NULL;
switch(family) {
case AF_INET:
len = sizeof(struct sockaddr_in);
struct in_addr addr_any = { .s_addr = INADDR_ANY };
if(0 == memcmp(&addr_any, &((struct sockaddr_in *)addr)->sin_addr, sizeof(addr_any))) {
inet_ntop(family, &self_stratcon_ip.sin_addr, tgt.target, len);
}
else {
inet_ntop(family, &((struct sockaddr_in *)addr)->sin_addr, tgt.target, len);
}
tgt.port = htons(((struct sockaddr_in *)addr)->sin_port);
break;
case AF_INET6:
len = sizeof(struct sockaddr_in6);
inet_ntop(family, &((struct sockaddr_in6 *)addr)->sin6_addr, tgt.target, len);
tgt.port = htons(((struct sockaddr_in6 *)addr)->sin6_port);
cn = NULL;
break;
default:
cn = NULL;
break;
}
if(cn) {
struct noit_meta *meta;
bool launch = false;
pthread_mutex_lock(&noit_ip_by_cn_lock);
if(mtev_hash_retrieve(&noit_ip_by_cn, cn, strlen(cn), &vtgt)) {
meta = (struct noit_meta *)vtgt;
memcpy(meta->target, tgt.target, sizeof(meta->target));
meta->port = tgt.port;
} else {
meta = noit_meta_new(cn, tgt.target, tgt.port);
mtev_hash_store(&noit_ip_by_cn, meta->cn, strlen(meta->cn), meta);
launch = true;
}
if(up) {
consul_start(meta, launch);
pthread_mutex_unlock(&noit_ip_by_cn_lock);
} else {
pthread_mutex_unlock(&noit_ip_by_cn_lock);
consul_reset(cn);
}
}
}
return MTEV_HOOK_CONTINUE;
}
static jlog_streamer_stats_t *
stats_alloc(stats_ns_t *parent, const char *cn) {
jlog_streamer_stats_t *h = calloc(1, sizeof(*h));
stats_ns_t *ns = mtev_stats_ns(parent, cn);
stats_ns_add_tag(ns, "broker-cn", cn);
h->jlog_id = stats_register(ns, "jlog_id", STATS_TYPE_UINT32);
h->total_events = stats_register(ns, "events", STATS_TYPE_UINT64);
stats_handle_units(h->total_events, STATS_UNITS_MESSAGES);
h->total_bytes_read = stats_register(ns, "inoctets", STATS_TYPE_UINT64);
stats_handle_units(h->total_bytes_read, STATS_UNITS_BYTES);
h->last_event_age = stats_register(ns, "delay", STATS_TYPE_DOUBLE);
stats_handle_units(h->last_event_age, STATS_UNITS_SECONDS);
h->connection_age = stats_register(ns, "uptime", STATS_TYPE_DOUBLE);
stats_handle_units(h->connection_age, STATS_UNITS_SECONDS);
h->batch_size = stats_register(ns, "batch_size", STATS_TYPE_HISTOGRAM);
stats_handle_units(h->batch_size, STATS_UNITS_MESSAGES);
h->batch_read_latency = stats_register(ns, "batch_read_latency", STATS_TYPE_HISTOGRAM);
stats_handle_tagged_name(h->batch_read_latency, "batch_latency");
stats_handle_add_tag(h->batch_read_latency, "feed-stage", "read");
stats_handle_units(h->batch_read_latency, STATS_UNITS_SECONDS);
h->batch_commit_latency = stats_register(ns, "batch_commit_latency", STATS_TYPE_HISTOGRAM);
stats_handle_tagged_name(h->batch_commit_latency, "batch_latency");
stats_handle_add_tag(h->batch_commit_latency, "feed-stage", "commit");
stats_handle_units(h->batch_commit_latency, STATS_UNITS_SECONDS);
return h;
}
static jlog_streamer_stats_t *
fetch_stats_for_feed(const char *cn, bool durable) {
jlog_streamer_stats_t *h;
if(cn == NULL) return NULL;
mtev_hash_table *tbl = durable ? &noit_stats_durable : &noit_stats_iep;
pthread_mutex_lock(&noit_ip_by_cn_lock);
void *vs;
if(mtev_hash_retrieve(tbl, cn, strlen(cn), &vs)) {
pthread_mutex_unlock(&noit_ip_by_cn_lock);
return (jlog_streamer_stats_t *)vs;
}
h = stats_alloc(durable ? durable_ns : iep_ns, cn);
mtev_hash_store(tbl, strdup(cn), strlen(cn), h);
pthread_mutex_unlock(&noit_ip_by_cn_lock);
return h;
}
static void stats_clear(jlog_streamer_stats_t *h) {
stats_handle_clear(h->jlog_id);
stats_handle_clear(h->total_events);
stats_handle_clear(h->total_bytes_read);
stats_handle_clear(h->last_event_age);
stats_handle_clear(h->connection_age);
stats_handle_clear(h->batch_size);
stats_handle_clear(h->batch_read_latency);
stats_handle_clear(h->batch_commit_latency);
}
static const char *feed_type_to_str(int jlog_feed_cmd) {
switch(jlog_feed_cmd) {
case NOIT_JLOG_DATA_FEED: return "durable/storage";
case NOIT_JLOG_DATA_TEMP_FEED: return "transient/iep";
}
return "unknown";
}
static const char *jlog_state_to_str(int state) {
switch(state) {
case JLOG_STREAMER_WANT_INITIATE: return "initiate"; break;
case JLOG_STREAMER_WANT_COUNT: return "waiting for next batch"; break;
case JLOG_STREAMER_WANT_ERROR: return "waiting for error"; break;
case JLOG_STREAMER_WANT_HEADER: return "reading header"; break;
case JLOG_STREAMER_WANT_BODY: return "reading body"; break;
case JLOG_STREAMER_IS_ASYNC: return "asynchronously processing"; break;
case JLOG_STREAMER_WANT_CHKPT: return "checkpointing"; break;
}
return "unknown";
}
static void change_state(jlog_streamer_ctx_t *ctx, mtev_connection_ctx_t *nctx, int new_state, struct timeval *now) {
if (N_L_S_ON(jlog_streamer_deb)) {
mtevL(jlog_streamer_deb, "changing state (type: %s) from \"%s\" to \"%s\" - [%s] [%s]\n",
feed_type_to_str(ntohl(ctx->jlog_feed_cmd)),
jlog_state_to_str(ctx->state),
jlog_state_to_str(new_state),
(nctx && nctx->remote_str) ? nctx->remote_str : "(null)",
(nctx && nctx->remote_cn) ? nctx->remote_cn : "(null)");
}
if(now) ctx->state_change = *now;
ctx->state = new_state;
}
#define GET_EXPECTED_CN(nctx, cn) do { \
void *vcn; \
cn = NULL; \
if(nctx->config && \
mtev_hash_retrieve(nctx->config, "cn", 2, &vcn)) { \
cn = vcn; \
} \
} while(0)
#define GET_FEEDTYPE(nctx, feedtype) do { \
jlog_streamer_ctx_t *_jctx = nctx->consumer_ctx; \
feedtype = "unknown"; \
if(_jctx->push == stratcon_datastore_push) \
feedtype = "storage"; \
else if(_jctx->push == stratcon_iep_line_processor) \
feedtype = "iep"; \
} while(0)
static int
remote_str_sort(const void *a, const void *b) {
int rv;
mtev_connection_ctx_t * const *actx = a;
mtev_connection_ctx_t * const *bctx = b;
jlog_streamer_ctx_t *ajctx = (*actx)->consumer_ctx;
jlog_streamer_ctx_t *bjctx = (*bctx)->consumer_ctx;
rv = strcmp((*actx)->remote_str, (*bctx)->remote_str);
if(rv) return rv;
return (ajctx->jlog_feed_cmd < bjctx->jlog_feed_cmd) ? -1 :
((ajctx->jlog_feed_cmd == bjctx->jlog_feed_cmd) ? 0 : 1);
}
static void
nc_print_noit_conn_brief(mtev_console_closure_t ncct,
mtev_connection_ctx_t *ctx) {
jlog_streamer_ctx_t *jctx = ctx->consumer_ctx;
struct timeval now, diff, session_duration;
char cmdbuf[4096];
const char *feedtype = "unknown";
const char *lasttime = "never";
const char *config_cn = NULL;
void *vcn;
if(ctx->last_connect.tv_sec != 0) {
time_t r = ctx->last_connect.tv_sec;
struct tm tbuf, *tm;
tm = gmtime_r(&r, &tbuf);
strftime(cmdbuf, sizeof(cmdbuf), "%Y-%m-%d %H:%M:%S UTC", tm);
lasttime = cmdbuf;
}
nc_printf(ncct, "%s [%s]:\n", ctx->remote_str,
ctx->remote_cn ? "connected" :
(ctx->retry_event ? "disconnected" :
"connecting"));
if(ctx->config &&
mtev_hash_retrieve(ctx->config, "cn", strlen("cn"), &vcn)) {
config_cn = vcn;
}
if(config_cn) nc_printf(ncct, "\tcn: %s\n", config_cn);
nc_printf(ncct, "\tLast connect: %s\n", lasttime);
if(ctx->e) {
char buff[128];
const char *addrstr = NULL;
struct sockaddr_in6 addr6;
socklen_t len = sizeof(addr6);
if(getsockname(eventer_get_fd(ctx->e), (struct sockaddr *)&addr6, &len) == 0) {
unsigned short port = 0;
if(addr6.sin6_family == AF_INET) {
addrstr = inet_ntop(addr6.sin6_family,
&((struct sockaddr_in *)&addr6)->sin_addr,
buff, sizeof(buff));
memcpy(&port, &(&addr6)->sin6_port, sizeof(port));
port = ntohs(port);
}
else if(addr6.sin6_family == AF_INET6) {
addrstr = inet_ntop(addr6.sin6_family, &addr6.sin6_addr,
buff, sizeof(buff));
port = ntohs(addr6.sin6_port);
}
if(addrstr != NULL)
nc_printf(ncct, "\tLocal address is %s:%u\n", buff, port);
else
nc_printf(ncct, "\tLocal address not interpretable\n");
}
else {
nc_printf(ncct, "\tLocal address error[%d]: %s\n",
eventer_get_fd(ctx->e), strerror(errno));
}
}
feedtype = feed_type_to_str(ntohl(jctx->jlog_feed_cmd));
nc_printf(ncct, "\tJLog event streamer [%s]\n", feedtype);
mtev_gettimeofday(&now, NULL);
if(ctx->timeout_event) {
struct timeval te = eventer_get_whence(ctx->timeout_event);
sub_timeval(te, now, &diff);
nc_printf(ncct, "\tTimeout scheduled for %lld.%06us\n",
(long long)diff.tv_sec, (unsigned int) diff.tv_usec);
}
if(ctx->retry_event) {
struct timeval re = eventer_get_whence(ctx->retry_event);
sub_timeval(re, now, &diff);
nc_printf(ncct, "\tNext attempt in %lld.%06us\n",
(long long)diff.tv_sec, (unsigned int) diff.tv_usec);
}
else if(ctx->remote_cn) {
nc_printf(ncct, "\tRemote CN: '%s'\n",
ctx->remote_cn ? ctx->remote_cn : "???");
if(ctx->consumer_callback == stratcon_jlog_recv_handler) {
struct timeval last;
double session_duration_seconds;
const char *state = "unknown";
switch(jctx->state) {
case JLOG_STREAMER_WANT_INITIATE: state = "initiate"; break;
case JLOG_STREAMER_WANT_COUNT: state = "waiting for next batch"; break;
case JLOG_STREAMER_WANT_ERROR: state = "waiting for error"; break;
case JLOG_STREAMER_WANT_HEADER: state = "reading header"; break;
case JLOG_STREAMER_WANT_BODY: state = "reading body"; break;
case JLOG_STREAMER_IS_ASYNC: state = "asynchronously processing"; break;
case JLOG_STREAMER_WANT_CHKPT: state = "checkpointing"; break;
}
last.tv_sec = jctx->header.tv_sec;
last.tv_usec = jctx->header.tv_usec;
sub_timeval(now, last, &diff);
sub_timeval(now, ctx->last_connect, &session_duration);
session_duration_seconds = session_duration.tv_sec +
(double)session_duration.tv_usec/1000000.0;
nc_printf(ncct, "\tState: %s\n"
"\tNext checkpoint: [%08x:%08x]\n"
"\tLast event: %lld.%06us ago\n"
"\tEvents this session: %llu (%0.2f/s)\n"
"\tOctets this session: %llu (%0.2f/s)\n",
state,
jctx->header.chkpt.log, jctx->header.chkpt.marker,
(long long)diff.tv_sec, (unsigned int)diff.tv_usec,
jctx->total_events,
(double)jctx->total_events/session_duration_seconds,
jctx->total_bytes_read,
(double)jctx->total_bytes_read/session_duration_seconds);
}
else {
nc_printf(ncct, "\tUnknown type.\n");
}
}
}
jlog_streamer_ctx_t *
stratcon_jlog_streamer_datastore_ctx_alloc(void) {
jlog_streamer_ctx_t *ctx;
ctx = stratcon_jlog_streamer_ctx_alloc();
ctx->jlog_feed_cmd = htonl(NOIT_JLOG_DATA_FEED);
ctx->push = stratcon_datastore_push;
return ctx;
}
jlog_streamer_ctx_t *
stratcon_jlog_streamer_ctx_alloc(void) {
jlog_streamer_ctx_t *ctx;
ctx = calloc(1, sizeof(*ctx));
return ctx;
}
void
jlog_streamer_ctx_free(void *cl) {
jlog_streamer_ctx_t *ctx = cl;
if(ctx->buffer) free(ctx->buffer);
free(ctx);
}
#define Eread(a,b) eventer_read(e, (a), (b), &mask)
static int
__read_on_ctx(eventer_t e, jlog_streamer_ctx_t *ctx, int *newmask) {
int len, mask;
while(ctx->bytes_read < ctx->bytes_expected) {
len = Eread(ctx->buffer + ctx->bytes_read,
ctx->bytes_expected - ctx->bytes_read);
if(len < 0) {
*newmask = mask;
return -1;
}
/* if we get 0 inside SSL, and there was a real error, we
* will actually get a -1 here.
* if(len == 0) return ctx->bytes_read;
*/
ctx->total_bytes_read += len;
if(ctx->stats) stats_set(ctx->stats->total_bytes_read, STATS_TYPE_UINT64, &ctx->total_bytes_read);
ctx->bytes_read += len;
}
mtevAssert(ctx->bytes_read == ctx->bytes_expected);
return ctx->bytes_read;
}
#define FULLREAD(e,ctx,size) do { \
int mask, len; \
if(!ctx->bytes_expected) { \
ctx->bytes_expected = size; \
if(ctx->buffer) free(ctx->buffer); \
ctx->buffer = malloc(size + 1); \
if(ctx->buffer == NULL) { \
mtevL(jlog_streamer_err, "malloc(%lu) failed.\n", (long unsigned int)size + 1); \
goto socket_error; \
} \
ctx->buffer[size] = '\0'; \
} \
len = __read_on_ctx(e, ctx, &mask); \
if(len < 0) { \
if(errno == EAGAIN) return mask | EVENTER_EXCEPTION; \
const char *error = NULL; \
/* libmtev's SSL layer uses EIO to indicate SSL-related errors. */ \
if(errno == EIO) { \
eventer_ssl_ctx_t *sslctx = eventer_get_eventer_ssl_ctx(e); \
if(sslctx) error = eventer_ssl_get_last_error(sslctx); \
} \
if(! error) error = strerror(errno); \
mtevL(jlog_streamer_err, "[%s] [%s] SSL read error: %s\n", nctx->remote_str ? nctx->remote_str : "(null)", \
nctx->remote_cn ? nctx->remote_cn : "(null)", \
error); \
goto socket_error; \
} \
ctx->bytes_read = 0; \
ctx->bytes_expected = 0; \
if(len != size) { \
mtevL(jlog_streamer_err, "[%s] [%s] SSL short read [%d] (%d/%lu). Reseting connection.\n", \
nctx->remote_str ? nctx->remote_str : "(null)", \
nctx->remote_cn ? nctx->remote_cn : "(null)", \
ctx->state, len, (long unsigned int)size); \
goto socket_error; \
} \
} while(0)
int
stratcon_jlog_recv_handler(eventer_t e, int mask, void *closure,
struct timeval *now) {
mtev_connection_ctx_t *nctx = closure;
jlog_streamer_ctx_t *ctx = nctx->consumer_ctx;
jlog_streamer_ctx_t dummy;
int len;
jlog_id n_chkpt;
const char *cn_expected, *feedtype;
GET_EXPECTED_CN(nctx, cn_expected);
GET_FEEDTYPE(nctx, feedtype);
(void)feedtype;
(void)cn_expected;
if(mask & EVENTER_EXCEPTION || nctx->wants_shutdown) {
if(write(eventer_get_fd(e), e, 0) == -1)
mtevL(jlog_streamer_err, "[%s] [%s] socket error: %s\n", nctx->remote_str ? nctx->remote_str : "(null)",
nctx->remote_cn ? nctx->remote_cn : "(null)", strerror(errno));
socket_error:
change_state(ctx, nctx, JLOG_STREAMER_WANT_INITIATE, now);
ctx->count = 0;
ctx->needs_chkpt = 0;
ctx->bytes_read = 0;
ctx->bytes_expected = 0;
if(ctx->buffer) free(ctx->buffer);
ctx->buffer = NULL;
nctx->schedule_reattempt(nctx, now);
if(ctx->stats) stats_clear(ctx->stats);
nctx->close(nctx, e);
return 0;
}
mtev_connection_update_timeout(nctx);
if(ctx->stats == NULL && feedtype) {
if(!strcmp(feedtype, "iep"))
ctx->stats = fetch_stats_for_feed(cn_expected, false);
else if(!strcmp(feedtype, "storage"))
ctx->stats = fetch_stats_for_feed(cn_expected, true);
}
if(ctx->stats) {
struct timeval diff;
sub_timeval(*now, nctx->last_connect, &diff);
double last_event = (double)diff.tv_sec + (double)diff.tv_usec / 1000000.0;
stats_set(ctx->stats->connection_age, STATS_TYPE_DOUBLE, &last_event);
}
while(1) {
switch(ctx->state) {
case JLOG_STREAMER_WANT_INITIATE:
len = eventer_write(e, &ctx->jlog_feed_cmd,
sizeof(ctx->jlog_feed_cmd), &mask);
if(len < 0) {
if(errno == EAGAIN) return mask | EVENTER_EXCEPTION;
mtevL(jlog_streamer_err, "[%s] [%s] initiating stream failed -> %d/%s.\n",
nctx->remote_str ? nctx->remote_str : "(null)", nctx->remote_cn ? nctx->remote_cn : "(null)", errno, strerror(errno));
goto socket_error;
}
if(len != sizeof(ctx->jlog_feed_cmd)) {
mtevL(jlog_streamer_err, "[%s] [%s] short write [%d/%d] on initiating stream.\n",
nctx->remote_str ? nctx->remote_str : "(null)", nctx->remote_cn ? nctx->remote_cn : "(null)",
(int)len, (int)sizeof(ctx->jlog_feed_cmd));
goto socket_error;
}
change_state(ctx, nctx, JLOG_STREAMER_WANT_COUNT, now);
break;
case JLOG_STREAMER_WANT_ERROR:
FULLREAD(e, ctx, 0 - ctx->count);
mtevL(jlog_streamer_err, "[%s] [%s] %.*s\n", nctx->remote_str ? nctx->remote_str : "(null)",
nctx->remote_cn ? nctx->remote_cn : "(null)", 0 - ctx->count, ctx->buffer);
free(ctx->buffer); ctx->buffer = NULL;
goto socket_error;
break;
case JLOG_STREAMER_WANT_COUNT:
FULLREAD(e, ctx, sizeof(uint32_t));
memcpy(&dummy.count, ctx->buffer, sizeof(uint32_t));
ctx->count = ntohl(dummy.count);
ctx->needs_chkpt = 0;
free(ctx->buffer); ctx->buffer = NULL;
STRATCON_STREAM_COUNT(eventer_get_fd(e), (char *)feedtype,
nctx->remote_str, (char *)cn_expected,
ctx->count);
if(ctx->count < 0)
change_state(ctx, nctx, JLOG_STREAMER_WANT_ERROR, now);
else
change_state(ctx, nctx, JLOG_STREAMER_WANT_HEADER, now);
break;
case JLOG_STREAMER_WANT_HEADER:
if(ctx->count == 0) {
change_state(ctx, nctx, JLOG_STREAMER_WANT_COUNT, now);
break;
}
FULLREAD(e, ctx, sizeof(ctx->header));
memcpy(&dummy.header, ctx->buffer, sizeof(ctx->header));
ctx->header.chkpt.log = ntohl(dummy.header.chkpt.log);
ctx->header.chkpt.marker = ntohl(dummy.header.chkpt.marker);
ctx->header.tv_sec = ntohl(dummy.header.tv_sec);
ctx->header.tv_usec = ntohl(dummy.header.tv_usec);
ctx->header.message_len = ntohl(dummy.header.message_len);
STRATCON_STREAM_HEADER(eventer_get_fd(e), (char *)feedtype,
nctx->remote_str, (char *)cn_expected,
ctx->header.chkpt.log, ctx->header.chkpt.marker,
ctx->header.tv_sec, ctx->header.tv_usec,
ctx->header.message_len);
free(ctx->buffer); ctx->buffer = NULL;
if(ctx->stats) {
struct timeval diff, last = { .tv_sec = ctx->header.tv_sec, .tv_usec = ctx->header.tv_usec };
sub_timeval(*now, last, &diff);
double last_event = (double)diff.tv_sec + (double)diff.tv_usec / 1000000.0;
stats_set(ctx->stats->last_event_age, STATS_TYPE_DOUBLE, &last_event);
}
change_state(ctx, nctx, JLOG_STREAMER_WANT_BODY, now);
break;
case JLOG_STREAMER_WANT_BODY:
FULLREAD(e, ctx, (unsigned long)ctx->header.message_len);
STRATCON_STREAM_BODY(eventer_get_fd(e), (char *)feedtype,
nctx->remote_str, (char *)cn_expected,
ctx->header.chkpt.log, ctx->header.chkpt.marker,
ctx->header.tv_sec, ctx->header.tv_usec,
ctx->buffer);
if(ctx->header.message_len > 0) {
ctx->needs_chkpt = 1;
ctx->push(DS_OP_INSERT, &nctx->r.remote, nctx->remote_cn,
ctx->buffer, NULL);
}
else if(ctx->buffer)
free(ctx->buffer);
/* Don't free the buffer, it's used by the datastore process. */
ctx->buffer = NULL;
ctx->count--;
ctx->total_events++;
if(ctx->stats) {
stats_set_hist_intscale(ctx->stats->batch_size, ctx->count, 0, 1);
stats_set(ctx->stats->total_events, STATS_TYPE_UINT64, &ctx->total_events);
}
if(ctx->count == 0 && ctx->needs_chkpt) {
eventer_t completion_e;
eventer_remove_fde(e);
completion_e = eventer_alloc_copy(e);
nctx->e = completion_e;
eventer_set_mask(completion_e, EVENTER_READ | EVENTER_WRITE | EVENTER_EXCEPTION);
/* register read latency */
if(ctx->stats) {
/* register batch size and latency */
struct timeval diff;
sub_timeval(*now, ctx->state_change, &diff);
stats_set_hist_intscale(ctx->stats->batch_read_latency, diff.tv_sec * 1000000 + diff.tv_usec, -6, 1);
}
change_state(ctx, nctx, JLOG_STREAMER_IS_ASYNC, now);
ctx->push(DS_OP_CHKPT, &nctx->r.remote, nctx->remote_cn,
NULL, completion_e);
mtevL(jlog_streamer_deb, "stratcon_jlog_recv_handler: Pushing %s batch async [%s] [%s]: [%u/%u]\n",
feed_type_to_str(ntohl(ctx->jlog_feed_cmd)),
nctx->remote_str ? nctx->remote_str : "(null)",
nctx->remote_cn ? nctx->remote_cn : "(null)",
ctx->header.chkpt.log, ctx->header.chkpt.marker);
mtev_connection_disable_timeout(nctx);
return 0;
}
else if(ctx->count == 0)
change_state(ctx, nctx, JLOG_STREAMER_WANT_CHKPT, now);
else
change_state(ctx, nctx, JLOG_STREAMER_WANT_HEADER, now);
break;
case JLOG_STREAMER_IS_ASYNC:
if(ctx->stats) {
/* register batch size and latency */
struct timeval diff;
sub_timeval(*now, ctx->state_change, &diff);
stats_set_hist_intscale(ctx->stats->batch_commit_latency, diff.tv_sec * 1000000 + diff.tv_usec, -6, 1);
}
change_state(ctx, nctx, JLOG_STREAMER_WANT_CHKPT, now); /* falls through */
case JLOG_STREAMER_WANT_CHKPT:
mtevL(jlog_streamer_deb, "stratcon_jlog_recv_handler: Pushing %s checkpoint [%s] [%s]: [%u/%u]\n",
feed_type_to_str(ntohl(ctx->jlog_feed_cmd)),
nctx->remote_str ? nctx->remote_str : "(null)",
nctx->remote_cn ? nctx->remote_cn : "(null)",
ctx->header.chkpt.log, ctx->header.chkpt.marker);
n_chkpt.log = htonl(ctx->header.chkpt.log);
n_chkpt.marker = htonl(ctx->header.chkpt.marker);
/* screw short writes. I'd rather die than not write my data! */
len = eventer_write(e, &n_chkpt, sizeof(jlog_id), &mask);
if(len < 0) {
if(errno == EAGAIN) {
mtevL(jlog_streamer_deb, "stratcon_jlog_recv_handler: failed eventer write: got EAGAIN\n");
return mask | EVENTER_EXCEPTION;
}
mtevL(jlog_streamer_deb, "stratcon_jlog_recv_handler: failed eventer write %d (%s) - goto socket_error\n",
errno, strerror(errno));
goto socket_error;
}
if(len != sizeof(jlog_id)) {
mtevL(jlog_streamer_err, "[%s] [%s] short write on checkpointing stream.\n",
nctx->remote_str ? nctx->remote_str : "(null)",
nctx->remote_cn ? nctx->remote_cn : "(null)");
goto socket_error;
}
STRATCON_STREAM_CHECKPOINT(eventer_get_fd(e), (char *)feedtype,
nctx->remote_str, (char *)cn_expected,
ctx->header.chkpt.log, ctx->header.chkpt.marker);
if(ctx->stats) stats_set(ctx->stats->jlog_id, STATS_TYPE_UINT32, &ctx->header.chkpt.log);
change_state(ctx, nctx, JLOG_STREAMER_WANT_COUNT, now);
break;
default:
break;
}
}
/* never get here */
}
int
stratcon_find_noit_ip_by_cn(const char *cn, char *ip, int len) {
int rv = -1;
void *vip;
pthread_mutex_lock(&noit_ip_by_cn_lock);
if(mtev_hash_retrieve(&noit_ip_by_cn, cn, strlen(cn), &vip)) {
int new_len;
struct noit_meta *new_ip = (struct noit_meta *)vip;
new_len = strlen(new_ip->target);
strlcpy(ip, new_ip->target, len);
if(new_len >= len) rv = new_len+1;
else rv = 0;
}
pthread_mutex_unlock(&noit_ip_by_cn_lock);
return rv;
}
void
stratcon_jlog_streamer_recache_noit() {
int di, cnt;
mtev_conf_section_t *noit_configs;
noit_configs = mtev_conf_get_sections_read(MTEV_CONF_ROOT, "//noits//noit", &cnt);
pthread_mutex_lock(&noit_ip_by_cn_lock);
mtev_hash_delete_all(&noit_ip_by_cn, consul_stop, noit_meta_free);
for(di=0; di<cnt; di++) {
char address[64];
if(mtev_conf_env_off(noit_configs[di], NULL)) continue;
if(mtev_conf_get_stringbuf(noit_configs[di], "self::node()/@address",
address, sizeof(address))) {
int port = 43191;
mtev_conf_get_int32(noit_configs[di], "self::node()/@port", &port);
char expected_cn[256];
if(mtev_conf_get_stringbuf(noit_configs[di], "self::node()/config/cn",
expected_cn, sizeof(expected_cn))) {
struct noit_meta *tgt = noit_meta_new(expected_cn, address, port);
mtev_hash_store(&noit_ip_by_cn,
tgt->cn, strlen(tgt->cn),
tgt);
consul_start(tgt, true);