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cache.c
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/*
* nProbe - a Netflow v5/v9/IPFIX probe for IPv4/v6
*
* Copyright (C) 2002-14 Luca Deri <deri@ntop.org>
*
* http://www.ntop.org/
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "nprobe.h"
#define FULL_STATS 1
static u_int8_t traceLRU = 1;
/*
Nutcracker
https://github.com/twitter/twemproxy
*/
/* ************************************ */
static void incrementSetDeleteQueueStats(u_int16_t id) {
#ifdef HAVE_REDIS
readWriteGlobals->redis.queuedSetDeleteCommands[id]++, readWriteGlobals->redis.numSetCommands[id]++;
if(readWriteGlobals->redis.queuedSetDeleteCommands[id] > readWriteGlobals->redis.maxQueuedSetDeleteCommands[id])
readWriteGlobals->redis.maxQueuedSetDeleteCommands[id] = readWriteGlobals->redis.queuedSetDeleteCommands[id];
#endif
}
/* ************************************ */
static void incrementLoggingQueueStats(u_int16_t id) {
#ifdef HAVE_REDIS
readWriteGlobals->redis.queuedLoggingCommands[id]++, readWriteGlobals->redis.numLoggingCommands[id]++;
if(readWriteGlobals->redis.queuedLoggingCommands[id] > readWriteGlobals->redis.maxQueuedLoggingCommands[id])
readWriteGlobals->redis.maxQueuedLoggingCommands[id] = readWriteGlobals->redis.queuedLoggingCommands[id];
#endif
}
/* ************************************ */
#ifdef HAVE_REDIS
static redisContext* connectToRedis(u_int8_t logging_redis) {
redisContext *rc;
struct timeval timeout = { 1, 500000 }; // 1.5 seconds
char *host;
u_int port;
if(logging_redis)
host = readOnlyGlobals.redis.logging_redis_host, port = readOnlyGlobals.redis.logging_redis_port;
else
host = readOnlyGlobals.redis.remote_redis_host, port = readOnlyGlobals.redis.remote_redis_port;
if(host == NULL) return(NULL);
#ifndef WIN32
if(host[0] == '/')
rc = redisConnectUnix(host);
else
#endif
rc = redisConnectWithTimeout(host, port, timeout);
if(rc->err) {
traceEvent(TRACE_ERROR, "Redis Connection error: %s", rc->errstr);
return(NULL);
}
return(rc);
}
#endif
/* ************************************ */
void logCacheKeyValueString(const char *prefix, u_int16_t id, const char *value) {
#ifdef HAVE_REDIS
if(readOnlyGlobals.redis.logging_context[id]) {
pthread_rwlock_wrlock(&readOnlyGlobals.redis.lock_logging[id]);
if(readOnlyGlobals.redis.logging_context[id] == NULL) readOnlyGlobals.redis.logging_context[id] = connectToRedis(0);
if(readOnlyGlobals.redis.logging_context[id]) {
if(unlikely(readOnlyGlobals.enable_debug)) traceEvent(TRACE_NORMAL, "[Redis] RPUSH log.%s %s", prefix, value);
redisAppendCommand(readOnlyGlobals.redis.logging_context[id], "RPUSH log.%s %s", prefix, value);
incrementLoggingQueueStats(id);
}
pthread_rwlock_unlock(&readOnlyGlobals.redis.lock_logging[id]);
}
#endif
}
/* ************************************ */
void queueCacheKeyValueString(const char *prefix, u_int16_t id, const char *queue_name, const char *value) {
#ifdef HAVE_REDIS
if(readOnlyGlobals.redis.write_context[id]) {
pthread_rwlock_wrlock(&readOnlyGlobals.redis.lock_set_delete[id]);
if(readOnlyGlobals.redis.write_context[id] == NULL) readOnlyGlobals.redis.write_context[id] = connectToRedis(0);
if(readOnlyGlobals.redis.write_context[id]) {
if(unlikely(readOnlyGlobals.enable_debug)) traceEvent(TRACE_NORMAL, "[Redis] RPUSH %s%s %s", prefix, queue_name, value);
redisAppendCommand(readOnlyGlobals.redis.write_context[id], "RPUSH %s%s %s", prefix, queue_name, value);
incrementSetDeleteQueueStats(id);
}
pthread_rwlock_unlock(&readOnlyGlobals.redis.lock_set_delete[id]);
}
#endif
}
/* ************************************ */
void setCacheKeyValueString(const char *prefix, u_int16_t id, const char *key, const char *value) {
#ifdef HAVE_REDIS
if(readOnlyGlobals.redis.write_context[id]) {
pthread_rwlock_wrlock(&readOnlyGlobals.redis.lock_set_delete[id]);
if(readOnlyGlobals.redis.write_context[id] == NULL) readOnlyGlobals.redis.write_context[id] = connectToRedis(0);
if(readOnlyGlobals.redis.write_context[id]) {
if(unlikely(readOnlyGlobals.enable_debug)) traceEvent(TRACE_NORMAL, "[Redis] SET %s%s %s", prefix, key, value);
redisAppendCommand(readOnlyGlobals.redis.write_context[id], "SET %s%s %s", prefix, key, value);
incrementSetDeleteQueueStats(id);
}
pthread_rwlock_unlock(&readOnlyGlobals.redis.lock_set_delete[id]);
}
#endif
}
/* ************************************************* */
void publishKeyValueString(const char *prefix, u_int16_t id, const char *key, const char *value) {
#ifdef HAVE_REDIS
if(!readOnlyGlobals.redis.use_nutcracker) {
if(readOnlyGlobals.redis.write_context[id]) {
pthread_rwlock_wrlock(&readOnlyGlobals.redis.lock_set_delete[id]);
if(readOnlyGlobals.redis.write_context[id] == NULL) readOnlyGlobals.redis.write_context[id] = connectToRedis(0);
if(readOnlyGlobals.redis.write_context[id]) {
if(unlikely(readOnlyGlobals.enable_debug)) traceEvent(TRACE_NORMAL, "[Redis] PUBLISH %s%s %s", prefix, key, value);
redisAppendCommand(readOnlyGlobals.redis.write_context[id], "PUBLISH %s%s %s", prefix, key, value);
incrementSetDeleteQueueStats(id);
}
pthread_rwlock_unlock(&readOnlyGlobals.redis.lock_set_delete[id]);
}
}
#endif
}
/* ************************************************* */
void setCacheKeyValueNumber(const char *prefix, u_int16_t id, const char *key, u_int64_t value) {
#ifdef HAVE_REDIS
if(readOnlyGlobals.redis.write_context[id]) {
pthread_rwlock_wrlock(&readOnlyGlobals.redis.lock_set_delete[id]);
if(readOnlyGlobals.redis.write_context[id] == NULL) readOnlyGlobals.redis.write_context[id] = connectToRedis(0);
if(readOnlyGlobals.redis.write_context[id]) {
if(unlikely(readOnlyGlobals.enable_debug)) traceEvent(TRACE_NORMAL, "[Redis] SET %s%s %llu", prefix, key, value);
redisAppendCommand(readOnlyGlobals.redis.write_context[id], "SET %s%s %llu", prefix, key, value);
incrementSetDeleteQueueStats(id);
}
pthread_rwlock_unlock(&readOnlyGlobals.redis.lock_set_delete[id]);
}
#endif
}
/* ************************************************* */
void setCacheKeyValueNumberNumber(const char *prefix, u_int16_t id, const u_int32_t key, const u_int32_t value) {
#ifdef HAVE_REDIS
if(readOnlyGlobals.redis.write_context[id]) {
pthread_rwlock_wrlock(&readOnlyGlobals.redis.lock_set_delete[id]);
if(readOnlyGlobals.redis.write_context[id] == NULL) readOnlyGlobals.redis.write_context[id] = connectToRedis(0);
if(readOnlyGlobals.redis.write_context[id]) {
if(unlikely(readOnlyGlobals.enable_debug)) traceEvent(TRACE_NORMAL, "[Redis] SET %s%u %u", prefix, key, value);
redisAppendCommand(readOnlyGlobals.redis.write_context[id], "SET %s%u %u", prefix, key, value);
incrementSetDeleteQueueStats(id);
}
pthread_rwlock_unlock(&readOnlyGlobals.redis.lock_set_delete[id]);
}
#endif
}
/* ************************************************* */
void setCacheKeyValueNumberString(const char *prefix, u_int16_t id, const u_int32_t key, const char *value) {
#ifdef HAVE_REDIS
if(readOnlyGlobals.redis.write_context[id]) {
pthread_rwlock_wrlock(&readOnlyGlobals.redis.lock_set_delete[id]);
if(readOnlyGlobals.redis.write_context[id] == NULL) readOnlyGlobals.redis.write_context[id] = connectToRedis(0);
if(readOnlyGlobals.redis.write_context[id]) {
if(unlikely(readOnlyGlobals.enable_debug)) traceEvent(TRACE_NORMAL, "[Redis] SET %s%u %s", prefix, key, value);
redisAppendCommand(readOnlyGlobals.redis.write_context[id], "SET %s%u %s", prefix, key, value);
incrementSetDeleteQueueStats(id);
}
pthread_rwlock_unlock(&readOnlyGlobals.redis.lock_set_delete[id]);
}
#endif
}
/* ************************************************* */
void incrCacheKeyValueNumber(const char *prefix, u_int16_t id, const char *key, u_int64_t value) {
#ifdef HAVE_REDIS
if(readOnlyGlobals.redis.write_context[id]) {
pthread_rwlock_wrlock(&readOnlyGlobals.redis.lock_set_delete[id]);
if(readOnlyGlobals.redis.write_context[id] == NULL) readOnlyGlobals.redis.write_context[id] = connectToRedis(0);
if(readOnlyGlobals.redis.write_context[id]) {
if(unlikely(readOnlyGlobals.enable_debug)) traceEvent(TRACE_NORMAL, "[Redis] INCRBY %s%s %llu", prefix, key, value);
redisAppendCommand(readOnlyGlobals.redis.write_context[id], "INCRBY %s%s %llu", prefix, key, value);
incrementSetDeleteQueueStats(id);
}
pthread_rwlock_unlock(&readOnlyGlobals.redis.lock_set_delete[id]);
}
#endif
}
/* ************************************************* */
void incrHashCacheKeyValueNumber(const char *element, u_int16_t id, const char *key, u_int64_t value) {
#ifdef HAVE_REDIS
if(readOnlyGlobals.redis.write_context[id]) {
pthread_rwlock_wrlock(&readOnlyGlobals.redis.lock_set_delete[id]);
if(readOnlyGlobals.redis.write_context[id] == NULL) readOnlyGlobals.redis.write_context[id] = connectToRedis(0);
if(readOnlyGlobals.redis.write_context[id]) {
if(unlikely(readOnlyGlobals.enable_debug)) traceEvent(TRACE_NORMAL, "[Redis] HINCRBY %s %s %llu", element, key, value);
redisAppendCommand(readOnlyGlobals.redis.write_context[id], "HINCRBY %s %s %llu", element, key, value);
incrementSetDeleteQueueStats(id);
}
pthread_rwlock_unlock(&readOnlyGlobals.redis.lock_set_delete[id]);
}
#endif
}
/* ************************************************* */
void expireCacheKey(const char *prefix, u_int16_t id, const char *key, u_int32_t duration_sec) {
#ifdef HAVE_REDIS
if(readOnlyGlobals.redis.write_context[id]) {
pthread_rwlock_wrlock(&readOnlyGlobals.redis.lock_set_delete[id]);
if(readOnlyGlobals.redis.write_context[id] == NULL) readOnlyGlobals.redis.write_context[id] = connectToRedis(0);
if(readOnlyGlobals.redis.write_context[id]) {
if(unlikely(readOnlyGlobals.enable_debug)) traceEvent(TRACE_NORMAL, "[Redis] EXPIRE %s%s %u", prefix, key, duration_sec);
redisAppendCommand(readOnlyGlobals.redis.write_context[id], "EXPIRE %s%s %u", prefix, key, duration_sec);
incrementSetDeleteQueueStats(id);
}
pthread_rwlock_unlock(&readOnlyGlobals.redis.lock_set_delete[id]);
}
#endif
}
/* ************************************ */
void setCacheHashKeyValueString(const char *element, u_int16_t id, const char *key, const char *value) {
#ifdef HAVE_REDIS
if(readOnlyGlobals.redis.write_context[id]) {
pthread_rwlock_wrlock(&readOnlyGlobals.redis.lock_set_delete[id]);
if(readOnlyGlobals.redis.write_context[id] == NULL) readOnlyGlobals.redis.write_context[id] = connectToRedis(0);
if(readOnlyGlobals.redis.write_context[id]) {
if(unlikely(readOnlyGlobals.enable_debug)) traceEvent(TRACE_NORMAL, "[Redis] HSET %s %s %s", element, key, value);
redisAppendCommand(readOnlyGlobals.redis.write_context[id], "HSET %s %s %s", element, key, value);
incrementSetDeleteQueueStats(id);
}
pthread_rwlock_unlock(&readOnlyGlobals.redis.lock_set_delete[id]);
}
#endif
}
/* ************************************************* */
void setCacheHashKeyValueNumber(const char *element, u_int16_t id, const char *key, u_int64_t value) {
#ifdef HAVE_REDIS
if(readOnlyGlobals.redis.write_context[id]) {
pthread_rwlock_wrlock(&readOnlyGlobals.redis.lock_set_delete[id]);
if(readOnlyGlobals.redis.write_context[id] == NULL) readOnlyGlobals.redis.write_context[id] = connectToRedis(0);
if(readOnlyGlobals.redis.write_context[id]) {
if(unlikely(readOnlyGlobals.enable_debug)) traceEvent(TRACE_NORMAL, "[Redis] HSET %s %s %llu", element, key, value);
redisAppendCommand(readOnlyGlobals.redis.write_context[id], "HSET %s %s %llu", element, key, value);
incrementSetDeleteQueueStats(id);
}
pthread_rwlock_unlock(&readOnlyGlobals.redis.lock_set_delete[id]);
}
#endif
}
/* ************************************************* */
void incrCacheHashKeyValueNumber(const char *element,
u_int16_t id, const char *key, const u_int64_t value) {
#ifdef HAVE_REDIS
if(readOnlyGlobals.redis.write_context[id] && (value > 0)) {
pthread_rwlock_wrlock(&readOnlyGlobals.redis.lock_set_delete[id]);
if(readOnlyGlobals.redis.write_context[id] == NULL) readOnlyGlobals.redis.write_context[id] = connectToRedis(0);
if(readOnlyGlobals.redis.write_context[id]) {
if(unlikely(readOnlyGlobals.enable_debug)) traceEvent(TRACE_NORMAL, "[Redis] HINCRBY %s %s %llu", element, key, value);
redisAppendCommand(readOnlyGlobals.redis.write_context[id], "HINCRBY %s %s %llu", element, key, value);
incrementSetDeleteQueueStats(id);
}
pthread_rwlock_unlock(&readOnlyGlobals.redis.lock_set_delete[id]);
}
#endif
}
/* ************************************************* */
void zIncrCacheHashKeyValueNumber(const char *set_name,
u_int16_t id, const char *key, const u_int64_t value) {
#ifdef HAVE_REDIS
if(readOnlyGlobals.redis.write_context[id] && (value > 0)) {
pthread_rwlock_wrlock(&readOnlyGlobals.redis.lock_set_delete[id]);
if(readOnlyGlobals.redis.write_context[id] == NULL) readOnlyGlobals.redis.write_context[id] = connectToRedis(0);
if(readOnlyGlobals.redis.write_context[id]) {
if(unlikely(readOnlyGlobals.enable_debug)) traceEvent(TRACE_NORMAL, "[Redis] ZINCRBY %s %llu %s", set_name, value, key);
redisAppendCommand(readOnlyGlobals.redis.write_context[id], "ZINCRBY %s %llu %s", set_name, value, key);
incrementSetDeleteQueueStats(id);
}
pthread_rwlock_unlock(&readOnlyGlobals.redis.lock_set_delete[id]);
}
#endif
}
/* ************************************************* */
void setCacheNumKeyMixedValueDual(const char *prefix,
u_int16_t id,
const u_int32_t key0, const char* value0,
const u_int32_t key1, const char* value1) {
#ifdef HAVE_REDIS
if(readOnlyGlobals.redis.use_nutcracker) {
setCacheKeyValueNumberString(prefix, id, key0, value0);
setCacheKeyValueNumberString(prefix, id, key1, value1);
} else {
if(readOnlyGlobals.redis.write_context[id]) {
pthread_rwlock_wrlock(&readOnlyGlobals.redis.lock_set_delete[id]);
if(readOnlyGlobals.redis.write_context[id] == NULL) readOnlyGlobals.redis.write_context[id] = connectToRedis(0);
if(readOnlyGlobals.redis.write_context[id]) {
if(unlikely(readOnlyGlobals.enable_debug))
traceEvent(TRACE_NORMAL, "[Redis] MSET %s%u %s %s%u %s",
prefix, key0, value0, prefix, key1, value1);
redisAppendCommand(readOnlyGlobals.redis.write_context[id],
"MSET %s%u \"%s\" %s%u \"%s\"",
prefix, key0, value0, prefix, key1, value1);
incrementSetDeleteQueueStats(id);
}
pthread_rwlock_unlock(&readOnlyGlobals.redis.lock_set_delete[id]);
}
}
#endif
}
/* ************************************************* */
void setCacheHashNumKeyMixedValueDual(const char *master_key,
u_int16_t id,
const u_int32_t key0, const char* value0,
const u_int32_t key1, const char* value1) {
#ifdef HAVE_REDIS
if(readOnlyGlobals.redis.use_nutcracker) {
setCacheKeyValueNumberString(master_key, id, key0, value0);
setCacheKeyValueNumberString(master_key, id, key1, value1);
} else {
if(readOnlyGlobals.redis.write_context[id]) {
pthread_rwlock_wrlock(&readOnlyGlobals.redis.lock_set_delete[id]);
if(readOnlyGlobals.redis.write_context[id] == NULL) readOnlyGlobals.redis.write_context[id] = connectToRedis(0);
if(readOnlyGlobals.redis.write_context[id]) {
if(unlikely(readOnlyGlobals.enable_debug))
traceEvent(TRACE_NORMAL, "[Redis] HMSET %s %u %s %u %s",
master_key,
key0, value0,
key1, value1);
redisAppendCommand(readOnlyGlobals.redis.write_context[id],
"HMSET %s %u %s %u %s",
master_key,
key0, value0,
key1, value1);
incrementSetDeleteQueueStats(id);
}
pthread_rwlock_unlock(&readOnlyGlobals.redis.lock_set_delete[id]);
}
}
#endif
}
/* ************************************************* */
void setCacheNumKeyMixedValueQuad(const char *prefix,
u_int16_t id,
const u_int32_t key0, const char* value0,
const u_int32_t key1, const char* value1,
const u_int32_t key2, const u_int32_t value2,
const u_int32_t key3, const u_int32_t value3) {
#ifdef HAVE_REDIS
if(readOnlyGlobals.redis.use_nutcracker) {
setCacheKeyValueNumberString(prefix, id, key0, value0);
setCacheKeyValueNumberString(prefix, id, key1, value1);
setCacheKeyValueNumberNumber(prefix, id, key2, value2);
setCacheKeyValueNumberNumber(prefix, id, key3, value3);
} else {
if(readOnlyGlobals.redis.write_context[id]) {
pthread_rwlock_wrlock(&readOnlyGlobals.redis.lock_set_delete[id]);
if(readOnlyGlobals.redis.write_context[id] == NULL) readOnlyGlobals.redis.write_context[id] = connectToRedis(0);
if(readOnlyGlobals.redis.write_context[id]) {
if(unlikely(readOnlyGlobals.enable_debug))
traceEvent(TRACE_NORMAL, "[Redis] MSET %s%u %s %s%u %s %s%u %u %s%u %u",
prefix, key0, value0, prefix, key1, value1,
prefix, key2, value2, prefix, key3, value3);
redisAppendCommand(readOnlyGlobals.redis.write_context[id],
"MSET %s%u \"%s\" %s%u \"%s\" %s%u %u %s%u %u",
prefix, key0, value0, prefix, key1, value1,
prefix, key2, value2, prefix, key3, value3);
incrementSetDeleteQueueStats(id);
}
pthread_rwlock_unlock(&readOnlyGlobals.redis.lock_set_delete[id]);
}
}
#endif
}
/* ************************************************* */
void setCacheHashNumKeyMixedValueQuad(const char *master_key,
u_int16_t id,
const u_int32_t key0, const char* value0,
const u_int32_t key1, const char* value1,
const u_int32_t key2, const u_int32_t value2,
const u_int32_t key3, const u_int32_t value3) {
#ifdef HAVE_REDIS
if(readOnlyGlobals.redis.use_nutcracker) {
setCacheKeyValueNumberString(master_key, id, key0, value0);
setCacheKeyValueNumberString(master_key, id, key1, value1);
setCacheKeyValueNumberNumber(master_key, id, key2, value2);
setCacheKeyValueNumberNumber(master_key, id, key3, value3);
} else {
if(readOnlyGlobals.redis.write_context[id]) {
pthread_rwlock_wrlock(&readOnlyGlobals.redis.lock_set_delete[id]);
if(readOnlyGlobals.redis.write_context[id] == NULL) readOnlyGlobals.redis.write_context[id] = connectToRedis(0);
if(readOnlyGlobals.redis.write_context[id]) {
if(unlikely(readOnlyGlobals.enable_debug))
traceEvent(TRACE_NORMAL, "[Redis] HMSET %s %u %s %u %s %u %u %u %u",
master_key,
key0, value0,
key1, value1,
key2, value2,
key3, value3);
redisAppendCommand(readOnlyGlobals.redis.write_context[id],
"HMSET %s %u %s %u %s %u %u %u %u",
master_key,
key0, value0,
key1, value1,
key2, value2,
key3, value3);
incrementSetDeleteQueueStats(id);
}
pthread_rwlock_unlock(&readOnlyGlobals.redis.lock_set_delete[id]);
}
}
#endif
}
/* ************************************ */
char* getCacheDataNumKey(const char *prefix, u_int16_t id, const u_int32_t key) {
#ifdef HAVE_REDIS
char *ret = NULL;
if(readOnlyGlobals.redis.read_context) {
redisReply *reply = NULL;
pthread_rwlock_wrlock(&readOnlyGlobals.redis.lock_get);
if(readOnlyGlobals.redis.read_context == NULL) readOnlyGlobals.redis.read_context = connectToRedis(0);
if(readOnlyGlobals.redis.read_context) {
if(unlikely(readOnlyGlobals.enable_debug)) traceEvent(TRACE_NORMAL, "[Redis] GET %s%u", prefix, key);
reply = redisCommand(readOnlyGlobals.redis.read_context, "GET %s%u", prefix, key);
readWriteGlobals->redis.numGetCommands[id]++;
}
if(reply && (readOnlyGlobals.redis.read_context->err == REDIS_OK)) {
if(reply->str) {
ret = strdup(reply->str);
if(unlikely(readOnlyGlobals.enable_debug))
traceEvent(TRACE_NORMAL, "[Redis] %s(%u)=%s", __FUNCTION__, key, ret);
}
freeReplyObject(reply);
} else {
/* Redis down ? */
// redisFree(readOnlyGlobals.redis.read_context);
readOnlyGlobals.redis.read_context = connectToRedis(0);
}
pthread_rwlock_unlock(&readOnlyGlobals.redis.lock_get);
}
return(ret);
#else
return(NULL);
#endif
}
/* ************************************ */
char* getCacheDataStrKey(const char *prefix, u_int16_t id, const char *key) {
#ifdef HAVE_REDIS
char *ret = NULL;
if(readOnlyGlobals.redis.read_context) {
redisReply *reply = NULL;
pthread_rwlock_wrlock(&readOnlyGlobals.redis.lock_get);
if(readOnlyGlobals.redis.read_context == NULL) readOnlyGlobals.redis.read_context = connectToRedis(0);
if(readOnlyGlobals.redis.read_context) {
if(unlikely(readOnlyGlobals.enable_debug)) traceEvent(TRACE_NORMAL, "[Redis] GET %s%s", prefix, key);
reply = redisCommand(readOnlyGlobals.redis.read_context, "GET %s%s", prefix, key);
readWriteGlobals->redis.numGetCommands[id]++;
}
if(reply && (readOnlyGlobals.redis.read_context->err == REDIS_OK)) {
if(reply->str) {
ret = strdup(reply->str);
if(unlikely(readOnlyGlobals.enable_debug)) traceEvent(TRACE_INFO, "[Redis] %s(%u)=%s", __FUNCTION__, key, ret);
}
freeReplyObject(reply);
} else {
/* Redis down ? */
// redisFree(readOnlyGlobals.redis.read_context);
readOnlyGlobals.redis.read_context = connectToRedis(0);
}
pthread_rwlock_unlock(&readOnlyGlobals.redis.lock_get);
}
return(ret);
#else
return(NULL);
#endif
}
/* ************************************ */
void getCacheDataStrKeyTwin(const char *prefix, u_int16_t id, const char *key1, const char *key2, char **rsp1, char **rsp2) {
#ifdef HAVE_REDIS
if(readOnlyGlobals.redis.read_context) {
redisReply *reply = NULL;
pthread_rwlock_wrlock(&readOnlyGlobals.redis.lock_get);
if(readOnlyGlobals.redis.read_context == NULL) readOnlyGlobals.redis.read_context = connectToRedis(0);
if(readOnlyGlobals.redis.read_context) {
if(unlikely(readOnlyGlobals.enable_debug)) traceEvent(TRACE_NORMAL, "[Redis] MGET %s%s %s%s", prefix, key1, prefix, key2);
reply = redisCommand(readOnlyGlobals.redis.read_context, "MGET %s%s %s%s", prefix, key1, prefix, key2);
readWriteGlobals->redis.numGetCommands[id]++;
}
if(reply && (readOnlyGlobals.redis.read_context->err == REDIS_OK)) {
*rsp1 = reply->element[0]->str ? strdup(reply->element[0]->str) : NULL;
*rsp2 = reply->element[1]->str ? strdup(reply->element[1]->str) : NULL;
if(unlikely(readOnlyGlobals.enable_debug))
traceEvent(TRACE_NORMAL, "[Redis] %s(%s, %s)=(%s, %s)", __FUNCTION__, key1, key2, *rsp1 ? *rsp1 : "", *rsp2 ? *rsp2 : "");
freeReplyObject(reply);
} else {
/* Redis down ? */
// redisFree(readOnlyGlobals.redis.read_context);
readOnlyGlobals.redis.read_context = connectToRedis(0);
}
pthread_rwlock_unlock(&readOnlyGlobals.redis.lock_get);
}
#endif
}
/* ************************************ */
void getCacheDataNumKeyTwin(const char *prefix, u_int16_t id, const u_int32_t key1, const u_int32_t key2, char **rsp1, char **rsp2) {
#ifdef HAVE_REDIS
if(readOnlyGlobals.redis.read_context) {
redisReply *reply = NULL;
pthread_rwlock_wrlock(&readOnlyGlobals.redis.lock_get);
if(readOnlyGlobals.redis.read_context == NULL) readOnlyGlobals.redis.read_context = connectToRedis(0);
if(readOnlyGlobals.redis.read_context) {
if(unlikely(readOnlyGlobals.enable_debug)) traceEvent(TRACE_NORMAL, "[Redis] MGET %s%u %s%u", prefix, key1, prefix, key2);
reply = redisCommand(readOnlyGlobals.redis.read_context, "MGET %s%u %s%u", prefix, key1, prefix, key2);
readWriteGlobals->redis.numGetCommands[id]++;
}
if(reply && (readOnlyGlobals.redis.read_context->err == REDIS_OK)) {
if(reply->element == NULL)
*rsp1 = *rsp2 = NULL;
else {
*rsp1 = reply->element[0]->str ? strdup(reply->element[0]->str) : NULL;
*rsp2 = reply->element[1]->str ? strdup(reply->element[1]->str) : NULL;
}
if(unlikely(readOnlyGlobals.enable_debug))
traceEvent(TRACE_NORMAL, "[Redis] %s(%u, %u)=(%s, %s)", __FUNCTION__, key1, key2, *rsp1 ? *rsp1 : "", *rsp2 ? *rsp2 : "");
freeReplyObject(reply);
} else {
/* Redis down ? */
// redisFree(readOnlyGlobals.redis.read_context);
readOnlyGlobals.redis.read_context = connectToRedis(0);
}
pthread_rwlock_unlock(&readOnlyGlobals.redis.lock_get);
}
#endif
}
/* ************************************ */
int deleteCacheStrKey(const char *prefix, u_int16_t id, const char *key, const u_int32_t delete_delay_sec) {
#ifdef HAVE_REDIS
if(readOnlyGlobals.redis.write_context[id]) {
if(unlikely(readOnlyGlobals.enable_debug)) traceEvent(TRACE_NORMAL, "[Redis] EXPIRE %s%s %d", prefix, key, delete_delay_sec);
pthread_rwlock_wrlock(&readOnlyGlobals.redis.lock_set_delete[id]);
if(readOnlyGlobals.redis.write_context[id] == NULL) readOnlyGlobals.redis.write_context[id] = connectToRedis(0);
if(readOnlyGlobals.redis.write_context[id]) {
if(delete_delay_sec > 0)
redisAppendCommand(readOnlyGlobals.redis.write_context[id], "EXPIRE %s%s %d", prefix, key, delete_delay_sec);
else
redisAppendCommand(readOnlyGlobals.redis.write_context[id], "DEL %s%s", prefix, key);
incrementSetDeleteQueueStats(id);
}
pthread_rwlock_unlock(&readOnlyGlobals.redis.lock_set_delete[id]);
}
#endif
return(0);
}
/* ************************************ */
int deleteCacheNumKey(const char *prefix, u_int16_t id, const u_int32_t key, const u_int32_t delete_delay_sec) {
#ifdef HAVE_REDIS
if(readOnlyGlobals.redis.write_context[id]) {
pthread_rwlock_wrlock(&readOnlyGlobals.redis.lock_set_delete[id]);
if(readOnlyGlobals.redis.write_context[id] == NULL) readOnlyGlobals.redis.write_context[id] = connectToRedis(0);
if(readOnlyGlobals.redis.write_context[id]) {
if(unlikely(readOnlyGlobals.enable_debug)) traceEvent(TRACE_NORMAL, "[Redis] EXPIRE %s%u %d", prefix, key, delete_delay_sec);
if(delete_delay_sec > 0)
redisAppendCommand(readOnlyGlobals.redis.write_context[id], "EXPIRE %s%u %d", prefix, key, delete_delay_sec);
else
redisAppendCommand(readOnlyGlobals.redis.write_context[id], "DEL %s%u", prefix, key);
incrementSetDeleteQueueStats(id);
}
pthread_rwlock_unlock(&readOnlyGlobals.redis.lock_set_delete[id]);
}
#endif
return(0);
}
/* ************************************ */
/* Redis does not accept expire time */
int deleteCacheNumKeyTwin(const char *prefix, u_int16_t id, const u_int32_t key1, const u_int32_t key2) {
#ifdef HAVE_REDIS
if(readOnlyGlobals.redis.write_context[id]) {
pthread_rwlock_wrlock(&readOnlyGlobals.redis.lock_set_delete[id]);
if(readOnlyGlobals.redis.write_context[id] == NULL) readOnlyGlobals.redis.write_context[id] = connectToRedis(0);
if(readOnlyGlobals.redis.write_context[id]) {
if(unlikely(readOnlyGlobals.enable_debug)) traceEvent(TRACE_NORMAL, "[Redis] DEL %s%u %s%u", prefix, key1, prefix, key2);
redisAppendCommand(readOnlyGlobals.redis.write_context[id], "DEL %s%u %s%u", prefix, key1, prefix, key2);
incrementSetDeleteQueueStats(id);
}
pthread_rwlock_unlock(&readOnlyGlobals.redis.lock_set_delete[id]);
}
#endif
return(0);
}
/* ************************************ */
/* Redis does not accept expire time */
int deleteCacheStrKeyTwin(const char *prefix, u_int16_t id, const char *key1, const char *key2) {
#ifdef HAVE_REDIS
if(readOnlyGlobals.redis.write_context[id]) {
pthread_rwlock_wrlock(&readOnlyGlobals.redis.lock_set_delete[id]);
if(readOnlyGlobals.redis.write_context[id] == NULL) readOnlyGlobals.redis.write_context[id] = connectToRedis(0);
if(readOnlyGlobals.redis.write_context[id]) {
if(unlikely(readOnlyGlobals.enable_debug)) traceEvent(TRACE_NORMAL, "[Redis] DEL %s%s %s%s", prefix, key1, prefix, key2);
redisAppendCommand(readOnlyGlobals.redis.write_context[id], "DEL %s%s %s%s", prefix, key1, prefix, key2);
incrementSetDeleteQueueStats(id);
}
pthread_rwlock_unlock(&readOnlyGlobals.redis.lock_set_delete[id]);
}
#endif
return(0);
}
/* ************************************ */
char* getHashCacheDataStrKey(const char *prefix, u_int16_t id, const char *element, const char *key) {
#ifdef HAVE_REDIS
char *ret = NULL;
if(readOnlyGlobals.redis.read_context) {
redisReply *reply = NULL;
pthread_rwlock_wrlock(&readOnlyGlobals.redis.lock_get);
if(readOnlyGlobals.redis.read_context == NULL) readOnlyGlobals.redis.read_context = connectToRedis(0);
if(readOnlyGlobals.redis.read_context) {
if(unlikely(readOnlyGlobals.enable_debug)) traceEvent(TRACE_NORMAL, "[Redis] HGET %s%s %s", prefix, element, key);
reply = redisCommand(readOnlyGlobals.redis.read_context, "HGET %s%s %s", prefix, element, key);
readWriteGlobals->redis.numGetCommands[id]++;
}
if(reply && (readOnlyGlobals.redis.read_context->err == REDIS_OK)) {
if(reply->str) {
ret = strdup(reply->str);
// traceEvent(TRACE_NORMAL, "[Redis] %s(%u)=%s", __FUNCTION__, key, ret);
}
freeReplyObject(reply);
} else {
/* Redis down ? */
// redisFree(readOnlyGlobals.redis.read_context);
readOnlyGlobals.redis.read_context = connectToRedis(0);
}
pthread_rwlock_unlock(&readOnlyGlobals.redis.lock_get);
}
return(ret);
#else
return(NULL);
#endif
}
/* ************************************ */
#ifdef HAVE_REDIS
static void processQueuedRedisCommand(u_int id) {
redisReply *reply;
pthread_rwlock_wrlock(&readOnlyGlobals.redis.lock_set_delete[id]);
if(readOnlyGlobals.redis.write_context[id]) {
redisGetReply(readOnlyGlobals.redis.write_context[id], (void**)&reply);
if(reply && (readOnlyGlobals.redis.write_context[id]->err == REDIS_OK))
freeReplyObject(reply);
else {
traceEvent(TRACE_WARNING, "It looks redis has been restarted (id: %u)", id);
// redisFree(readOnlyGlobals.redis.write_context[id]);
readOnlyGlobals.redis.write_context[id] = connectToRedis(0);
}
} else
readOnlyGlobals.redis.write_context[id] = connectToRedis(0);
readWriteGlobals->redis.queuedSetDeleteCommands[id]--;
#if 0
if(unlikely(readOnlyGlobals.enable_debug))
traceEvent(TRACE_NORMAL, "[Redis] %s(): got reply [queue=%d]",
__FUNCTION__, readWriteGlobals->redis.queuedSetDeleteCommands[id]);
#endif
pthread_rwlock_unlock(&readOnlyGlobals.redis.lock_set_delete[id]);
}
#endif
/* ************************************ */
#ifdef HAVE_REDIS
static void processQueuedLoggingRedisCommand(u_int id) {
redisReply *reply;
pthread_rwlock_wrlock(&readOnlyGlobals.redis.lock_logging[id]);
if(readOnlyGlobals.redis.logging_context[id]) {
redisGetReply(readOnlyGlobals.redis.logging_context[id], (void**)&reply);
if(reply && (readOnlyGlobals.redis.logging_context[id]->err == REDIS_OK))
freeReplyObject(reply);
else {
traceEvent(TRACE_WARNING, "It looks redis has been restarted (id: %u)", id);
// redisFree(readOnlyGlobals.redis.logging_context[id]);
readOnlyGlobals.redis.logging_context[id] = connectToRedis(0);
}
} else
readOnlyGlobals.redis.logging_context[id] = connectToRedis(0);
readWriteGlobals->redis.queuedLoggingCommands[id]--;
pthread_rwlock_unlock(&readOnlyGlobals.redis.lock_logging[id]);
}
#endif
/* ************************************ */
#define MAX_NUM_ARGUMENTS 32
#define MAX_ARGUMENT_LEN 256
int readRedisLine(int sock, char *line) {
int pos = 0;
while(recv(sock, &line[pos++], 1, 0) > 0) {
if((pos > 2)
&& (line[pos-2] == '\r')
&& (line[pos-1] == '\n')) {
line[pos++] = '\0';
return(pos);
}
}
return(0);
}
int readRedisCommand(int sock, char request[MAX_NUM_ARGUMENTS][MAX_ARGUMENT_LEN]) {
/*
*1
$4
PING
*<number of arguments> CR LF
$<number of bytes of argument 1> CR LF
<argument data> CR LF
...
$<number of bytes of argument N> CR LF
<argument data> CR LF
*/
readRedisLine(sock, request[0]);
request[1][0] = '\0';
return(0);
}
/* ************************************ */
void handleClient(int sock) {
char request[MAX_NUM_ARGUMENTS][MAX_ARGUMENT_LEN];
while(readRedisCommand(sock, request) >= 0) {
int i;
char *rsp;
for(i=0; request[i][0] != '\0'; i++)
traceEvent(TRACE_NORMAL, "%s", request[i]);
rsp = "+OK\r\n";
send(sock, rsp, strlen(rsp), 0);
}
}
/* ************************************ */
#ifdef HAVE_REDIS
static void* redisLocalServerLoop(void* notUsed) {
traceEvent(TRACE_NORMAL, "[Redis Server] %s() started", __FUNCTION__);
readOnlyGlobals.redis.local_server_running = 0;
while(!readWriteGlobals->shutdownInProgress) {
fd_set mask;
FD_ZERO(&mask);
FD_SET(readOnlyGlobals.redis.local_server_socket, &mask);
if(select(readOnlyGlobals.redis.local_server_socket+1, &mask, 0, 0, NULL) > 0) {
struct sockaddr_in from;
int rx_sock, from_len;
rx_sock = accept(readOnlyGlobals.redis.local_server_socket, (struct sockaddr*)&from, (socklen_t*)&from_len);
if((rx_sock < 0) || (errno != 0)) {
traceEvent(TRACE_ERROR, "Unable to accept connection [%s/%d]", strerror(errno), errno);
}
traceEvent(TRACE_NORMAL, "[Redis Server] New client connected [socket %d]", rx_sock);
handleClient(rx_sock);
close(rx_sock);
}
}
readOnlyGlobals.redis.local_server_running = 1;
return(NULL);
}
#endif
/* ************************************ */
#ifdef HAVE_REDIS
static void* redisAsyncLoop(void* _thid) {
unsigned long id = (unsigned long)_thid;
traceEvent(TRACE_INFO, "[Redis] %s(%d) started", __FUNCTION__, id);
readOnlyGlobals.redis.queue_thread_running[id] = 1;
while(!readWriteGlobals->shutdownInProgress) {
if(readWriteGlobals->redis.queuedSetDeleteCommands[id] > 0)
processQueuedRedisCommand(id);
else if(readWriteGlobals->redis.queuedLoggingCommands[id] > 0)
processQueuedLoggingRedisCommand(id);
else
usleep(10000); /* 10 ms */
}
/* Flush pending commands */
while(readWriteGlobals->redis.queuedSetDeleteCommands[id] > 0)
processQueuedRedisCommand(id);
while(readWriteGlobals->redis.queuedLoggingCommands[id] > 0)
processQueuedLoggingRedisCommand(id);
readOnlyGlobals.redis.queue_thread_running[id] = 0;
traceEvent(TRACE_INFO, "[Redis] %s() completed [queue=%d]", __FUNCTION__, id);
return(NULL);
}
#endif
/* ************************************ */
int createLocalCacheServer() {
#ifdef HAVE_REDIS
int sockopt = 1;
struct sockaddr_in sockIn;
if(readOnlyGlobals.redis.local_ucloud_port == 0)
return(0);
errno = 0;
readOnlyGlobals.redis.local_server_socket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if((readOnlyGlobals.redis.local_server_socket < 0) || (errno != 0)) {
traceEvent(TRACE_ERROR, "Unable to create server socket [%s/%d]", strerror(errno), errno);
exit(-1);
}
errno = 0;
setsockopt(readOnlyGlobals.redis.local_server_socket, SOL_SOCKET, SO_REUSEADDR, (char *)&sockopt, sizeof(sockopt));
memset(&sockIn, 0, sizeof(sockIn));
sockIn.sin_family = AF_INET, sockIn.sin_port = (int)htons(readOnlyGlobals.redis.local_ucloud_port), errno = 0;
bind(readOnlyGlobals.redis.local_server_socket, (struct sockaddr *)&sockIn, sizeof(sockIn));
if((readOnlyGlobals.redis.local_server_socket < 0) || (errno != 0)) {
traceEvent(TRACE_ERROR, "Unable to bind to the specified port [%s/%d]", strerror(errno), errno);
exit(-1);
}
errno = 0;
listen(readOnlyGlobals.redis.local_server_socket, 1 /* 1 client max */);
pthread_create(&readOnlyGlobals.redis.local_server_loop, NULL, redisLocalServerLoop, NULL);
#endif
return(0);
}
/* ************************************ */
int connectToRemoteCache(void) {
#ifdef HAVE_REDIS
int i;
/* Asynchronous */
if(readOnlyGlobals.redis.remote_redis_host) {
if(unlikely(readOnlyGlobals.enable_debug))
traceEvent(TRACE_NORMAL, "[Redis] %s(%s:%u)", __FUNCTION__,
readOnlyGlobals.redis.remote_redis_host, readOnlyGlobals.redis.remote_redis_port);
/* Synchronous */
readOnlyGlobals.redis.read_context = connectToRedis(0);
if(readOnlyGlobals.redis.read_context == NULL)