diff options
Diffstat (limited to 'redis')
| -rw-r--r-- | redis/apr_redis.c | 1548 |
1 files changed, 1548 insertions, 0 deletions
diff --git a/redis/apr_redis.c b/redis/apr_redis.c new file mode 100644 index 0000000..8d01fdd --- /dev/null +++ b/redis/apr_redis.c @@ -0,0 +1,1548 @@ +/* Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include "apr_redis.h" +#include "apr_poll.h" +#include "apr_version.h" +#include <stdlib.h> +#include <string.h> + +#define BUFFER_SIZE 512 +#define LILBUFF_SIZE 64 +struct apr_redis_conn_t +{ + char *buffer; + apr_size_t blen; + apr_pool_t *p; + apr_pool_t *tp; + apr_socket_t *sock; + apr_bucket_brigade *bb; + apr_bucket_brigade *tb; + apr_redis_server_t *rs; +}; + +/* Strings for Client Commands */ + +#define RC_EOL "\r\n" +#define RC_EOL_LEN (sizeof(RC_EOL)-1) + +#define RC_WS " " +#define RC_WS_LEN (sizeof(RC_WS)-1) + +#define RC_RESP_1 "*1\r\n" +#define RC_RESP_1_LEN (sizeof(RC_RESP_1)-1) + +#define RC_RESP_2 "*2\r\n" +#define RC_RESP_2_LEN (sizeof(RC_RESP_2)-1) + +#define RC_RESP_3 "*3\r\n" +#define RC_RESP_3_LEN (sizeof(RC_RESP_3)-1) + +#define RC_RESP_4 "*4\r\n" +#define RC_RESP_4_LEN (sizeof(RC_RESP_4)-1) + +#define RC_GET "GET\r\n" +#define RC_GET_LEN (sizeof(RC_GET)-1) + +#define RC_GET_SIZE "$3\r\n" +#define RC_GET_SIZE_LEN (sizeof(RC_GET_SIZE)-1) + +#define RC_SET "SET\r\n" +#define RC_SET_LEN (sizeof(RC_SET)-1) + +#define RC_SET_SIZE "$3\r\n" +#define RC_SET_SIZE_LEN (sizeof(RC_SET_SIZE)-1) + +#define RC_SETEX "SETEX\r\n" +#define RC_SETEX_LEN (sizeof(RC_SETEX)-1) + +#define RC_SETEX_SIZE "$5\r\n" +#define RC_SETEX_SIZE_LEN (sizeof(RC_SETEX_SIZE)-1) + +#define RC_DEL "DEL\r\n" +#define RC_DEL_LEN (sizeof(RC_DEL)-1) + +#define RC_DEL_SIZE "$3\r\n" +#define RC_DEL_SIZE_LEN (sizeof(RC_DEL_SIZE)-1) + +#define RC_QUIT "QUIT\r\n" +#define RC_QUIT_LEN (sizeof(RC_QUIT)-1) + +#define RC_QUIT_SIZE "$4\r\n" +#define RC_QUIT_SIZE_LEN (sizeof(RC_QUIT_SIZE)-1) + +#define RC_PING "PING\r\n" +#define RC_PING_LEN (sizeof(RC_PING)-1) + +#define RC_PING_SIZE "$4\r\n" +#define RC_PING_SIZE_LEN (sizeof(RC_PING_SIZE)-1) + +#define RC_INFO "INFO\r\n" +#define RC_INFO_LEN (sizeof(RC_INFO)-1) + +#define RC_INFO_SIZE "$4\r\n" +#define RC_INFO_SIZE_LEN (sizeof(RC_INFO_SIZE)-1) + +/* Strings for Server Replies */ + +#define RS_STORED "+OK" +#define RS_STORED_LEN (sizeof(RS_STORED)-1) + +#define RS_NOT_STORED "$-1" +#define RS_NOT_STORED_LEN (sizeof(RS_NOT_STORED)-1) + +#define RS_DELETED ":1" +#define RS_DELETED_LEN (sizeof(RS_DELETED)-1) + +#define RS_NOT_FOUND_GET "$-1" +#define RS_NOT_FOUND_GET_LEN (sizeof(RS_NOT_FOUND_GET)-1) + +#define RS_NOT_FOUND_DEL ":0" +#define RS_NOT_FOUND_DEL_LEN (sizeof(RS_NOT_FOUND_DEL)-1) + +#define RS_TYPE_STRING "$" +#define RS_TYPE_STRING_LEN (sizeof(RS_TYPE_STRING)-1) + +#define RS_END "\r\n" +#define RS_END_LEN (sizeof(RS_END)-1) + +static apr_status_t make_server_dead(apr_redis_t *rc, + apr_redis_server_t *rs) +{ +#if APR_HAS_THREADS + apr_thread_mutex_lock(rs->lock); +#endif + rs->status = APR_RC_SERVER_DEAD; + rs->btime = apr_time_now(); +#if APR_HAS_THREADS + apr_thread_mutex_unlock(rs->lock); +#endif + return APR_SUCCESS; +} + +static apr_status_t make_server_live(apr_redis_t *rc, + apr_redis_server_t *rs) +{ + rs->status = APR_RC_SERVER_LIVE; + return APR_SUCCESS; +} + +APU_DECLARE(apr_status_t) apr_redis_add_server(apr_redis_t *rc, + apr_redis_server_t *rs) +{ + apr_status_t rv = APR_SUCCESS; + + if (rc->ntotal >= rc->nalloc) { + return APR_ENOMEM; + } + rc->live_servers[rc->ntotal] = rs; + rc->ntotal++; + make_server_live(rc, rs); + return rv; +} + +APU_DECLARE(apr_redis_server_t *) +apr_redis_find_server_hash(apr_redis_t *rc, const apr_uint32_t hash) +{ + if (rc->server_func) { + return rc->server_func(rc->server_baton, rc, hash); + } + else { + return apr_redis_find_server_hash_default(NULL, rc, hash); + } +} + +APU_DECLARE(apr_redis_server_t *) +apr_redis_find_server_hash_default(void *baton, apr_redis_t *rc, + const apr_uint32_t hash) +{ + apr_redis_server_t *rs = NULL; + apr_uint32_t h = hash ? hash : 1; + apr_uint32_t i = 0; + apr_time_t curtime = 0; + + if (rc->ntotal == 0) { + return NULL; + } + + do { + rs = rc->live_servers[h % rc->ntotal]; + if (rs->status == APR_RC_SERVER_LIVE) { + break; + } + else { + if (curtime == 0) { + curtime = apr_time_now(); + } +#if APR_HAS_THREADS + apr_thread_mutex_lock(rs->lock); +#endif + /* Try the dead server, every 5 seconds */ + if (curtime - rs->btime > apr_time_from_sec(5)) { + rs->btime = curtime; + if (apr_redis_ping(rs) == APR_SUCCESS) { + make_server_live(rc, rs); +#if APR_HAS_THREADS + apr_thread_mutex_unlock(rs->lock); +#endif + break; + } + } +#if APR_HAS_THREADS + apr_thread_mutex_unlock(rs->lock); +#endif + } + h++; + i++; + } while (i < rc->ntotal); + + if (i == rc->ntotal) { + rs = NULL; + } + + return rs; +} + +APU_DECLARE(apr_redis_server_t *) apr_redis_find_server(apr_redis_t *rc, + const char *host, + apr_port_t port) +{ + int i; + + for (i = 0; i < rc->ntotal; i++) { + if (strcmp(rc->live_servers[i]->host, host) == 0 + && rc->live_servers[i]->port == port) { + + return rc->live_servers[i]; + } + } + + return NULL; +} + +static apr_status_t rs_find_conn(apr_redis_server_t *rs, + apr_redis_conn_t ** conn) +{ + apr_status_t rv; + apr_bucket_alloc_t *balloc; + apr_bucket *e; + +#if APR_HAS_THREADS + rv = apr_reslist_acquire(rs->conns, (void **) conn); +#else + *conn = rs->conn; + rv = APR_SUCCESS; +#endif + + if (rv != APR_SUCCESS) { + return rv; + } + + balloc = apr_bucket_alloc_create((*conn)->tp); + (*conn)->bb = apr_brigade_create((*conn)->tp, balloc); + (*conn)->tb = apr_brigade_create((*conn)->tp, balloc); + + e = apr_bucket_socket_create((*conn)->sock, balloc); + APR_BRIGADE_INSERT_TAIL((*conn)->bb, e); + + return rv; +} + +static apr_status_t rs_bad_conn(apr_redis_server_t *rs, + apr_redis_conn_t *conn) +{ +#if APR_HAS_THREADS + return apr_reslist_invalidate(rs->conns, conn); +#else + return APR_SUCCESS; +#endif +} + +static apr_status_t rs_release_conn(apr_redis_server_t *rs, + apr_redis_conn_t *conn) +{ + apr_pool_clear(conn->tp); +#if APR_HAS_THREADS + return apr_reslist_release(rs->conns, conn); +#else + return APR_SUCCESS; +#endif +} + +APU_DECLARE(apr_status_t) apr_redis_enable_server(apr_redis_t *rc, + apr_redis_server_t *rs) +{ + apr_status_t rv = APR_SUCCESS; + + if (rs->status == APR_RC_SERVER_LIVE) { + return rv; + } + rv = make_server_live(rc, rs); + return rv; +} + +APU_DECLARE(apr_status_t) apr_redis_disable_server(apr_redis_t *rc, + apr_redis_server_t *rs) +{ + return make_server_dead(rc, rs); +} + +static apr_status_t conn_connect(apr_redis_conn_t *conn) +{ + apr_status_t rv = APR_SUCCESS; + apr_sockaddr_t *sa; +#if APR_HAVE_SOCKADDR_UN + apr_int32_t family = conn->rs->host[0] != '/' ? APR_INET : APR_UNIX; +#else + apr_int32_t family = APR_INET; +#endif + + rv = apr_sockaddr_info_get(&sa, conn->rs->host, family, conn->rs->port, 0, + conn->p); + if (rv != APR_SUCCESS) { + return rv; + } + + rv = apr_socket_timeout_set(conn->sock, 1 * APR_USEC_PER_SEC); + if (rv != APR_SUCCESS) { + return rv; + } + + rv = apr_socket_connect(conn->sock, sa); + if (rv != APR_SUCCESS) { + return rv; + } + + rv = apr_socket_timeout_set(conn->sock, + conn->rs->rwto * APR_USEC_PER_SEC); + if (rv != APR_SUCCESS) { + return rv; + } + + return rv; +} + +static apr_status_t +rc_conn_construct(void **conn_, void *params, apr_pool_t *pool) +{ + apr_status_t rv = APR_SUCCESS; + apr_redis_conn_t *conn; + apr_pool_t *np; + apr_pool_t *tp; + apr_redis_server_t *rs = params; +#if APR_HAVE_SOCKADDR_UN + apr_int32_t family = rs->host[0] != '/' ? APR_INET : APR_UNIX; +#else + apr_int32_t family = APR_INET; +#endif + + rv = apr_pool_create(&np, pool); + if (rv != APR_SUCCESS) { + return rv; + } + + rv = apr_pool_create(&tp, np); + if (rv != APR_SUCCESS) { + apr_pool_destroy(np); + return rv; + } + + conn = apr_palloc(np, sizeof(apr_redis_conn_t)); + + conn->p = np; + conn->tp = tp; + + rv = apr_socket_create(&conn->sock, family, SOCK_STREAM, 0, np); + + if (rv != APR_SUCCESS) { + apr_pool_destroy(np); + return rv; + } + + conn->buffer = apr_palloc(conn->p, BUFFER_SIZE + 1); + conn->blen = 0; + conn->rs = rs; + + rv = conn_connect(conn); + if (rv != APR_SUCCESS) { + apr_pool_destroy(np); + } + else { + *conn_ = conn; + } + + return rv; +} + +#if APR_HAS_THREADS +static apr_status_t +rc_conn_destruct(void *conn_, void *params, apr_pool_t *pool) +{ + apr_redis_conn_t *conn = (apr_redis_conn_t *) conn_; + struct iovec vec[3]; + apr_size_t written; + + /* send a quit message to the Redis server to be nice about it. */ + + /* + * RESP Command: + * *1 + * $4 + * QUIT + */ + vec[0].iov_base = RC_RESP_1; + vec[0].iov_len = RC_RESP_1_LEN; + + vec[1].iov_base = RC_QUIT_SIZE; + vec[1].iov_len = RC_QUIT_SIZE_LEN; + + vec[2].iov_base = RC_QUIT; + vec[2].iov_len = RC_QUIT_LEN; + + /* Return values not checked, since we just want to make it go away. */ + apr_socket_sendv(conn->sock, vec, 3, &written); + apr_socket_close(conn->sock); + + apr_pool_destroy(conn->p); + + return APR_SUCCESS; +} +#endif + +APU_DECLARE(apr_status_t) apr_redis_server_create(apr_pool_t *p, + const char *host, + apr_port_t port, + apr_uint32_t min, + apr_uint32_t smax, + apr_uint32_t max, + apr_uint32_t ttl, + apr_uint32_t rwto, + apr_redis_server_t **rs) +{ + apr_status_t rv = APR_SUCCESS; + apr_redis_server_t *server; + apr_pool_t *np; + + rv = apr_pool_create(&np, p); + + server = apr_palloc(np, sizeof(apr_redis_server_t)); + + server->p = np; + server->host = apr_pstrdup(np, host); + server->port = port; + server->status = APR_RC_SERVER_DEAD; + server->rwto = rwto; + server->version.major = 0; + server->version.minor = 0; + server->version.patch = 0; + +#if APR_HAS_THREADS + rv = apr_thread_mutex_create(&server->lock, APR_THREAD_MUTEX_DEFAULT, np); + if (rv != APR_SUCCESS) { + return rv; + } + + rv = apr_reslist_create(&server->conns, + min, /* hard minimum */ + smax, /* soft maximum */ + max, /* hard maximum */ + ttl, /* Time to live */ + rc_conn_construct, /* Make a New Connection */ + rc_conn_destruct, /* Kill Old Connection */ + server, np); + if (rv != APR_SUCCESS) { + return rv; + } + + apr_reslist_cleanup_order_set(server->conns, APR_RESLIST_CLEANUP_FIRST); +#else + rv = rc_conn_construct((void **) &(server->conn), server, np); + if (rv != APR_SUCCESS) { + return rv; + } +#endif + + *rs = server; + + return rv; +} + +APU_DECLARE(apr_status_t) apr_redis_create(apr_pool_t *p, + apr_uint16_t max_servers, + apr_uint32_t flags, + apr_redis_t **redis) +{ + apr_status_t rv = APR_SUCCESS; + apr_redis_t *rc; + + rc = apr_palloc(p, sizeof(apr_redis_t)); + rc->p = p; + rc->nalloc = max_servers; + rc->ntotal = 0; + rc->live_servers = + apr_palloc(p, rc->nalloc * sizeof(struct apr_redis_server_t *)); + rc->hash_func = NULL; + rc->hash_baton = NULL; + rc->server_func = NULL; + rc->server_baton = NULL; + *redis = rc; + return rv; +} + + +/* The crc32 functions and data was originally written by Spencer + * Garrett <srg@quick.com> and was gleaned from the PostgreSQL source + * tree via the files contrib/ltree/crc32.[ch] and from FreeBSD at + * src/usr.bin/cksum/crc32.c. + */ + +static const apr_uint32_t crc32tab[256] = { + 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, + 0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3, + 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988, + 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, + 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de, + 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, + 0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, + 0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5, + 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172, + 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, + 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, + 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59, + 0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, + 0x21b4f4b5, 0x56b3c423, 0xcfba9599, 0xb8bda50f, + 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, + 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, + 0x76dc4190, 0x01db7106, 0x98d220bc, 0xefd5102a, + 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433, + 0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, + 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01, + 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, + 0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, + 0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c, + 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65, + 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, + 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, + 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0, + 0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, + 0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086, + 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f, + 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, + 0x59b33d17, 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, + 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a, + 0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, + 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8, + 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, + 0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, + 0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7, + 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc, + 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, + 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, + 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b, + 0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, + 0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79, + 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, + 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, + 0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, + 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d, + 0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, + 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713, + 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, + 0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, + 0x86d3d2d4, 0xf1d4e242, 0x68ddb3f8, 0x1fda836e, + 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777, + 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, + 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, + 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2, + 0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, + 0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0, + 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9, + 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, + 0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf, + 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94, + 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d, +}; + +APU_DECLARE(apr_uint32_t) apr_redis_hash_crc32(void *baton, + const char *data, + const apr_size_t data_len) +{ + apr_uint32_t i; + apr_uint32_t crc; + crc = ~0; + + for (i = 0; i < data_len; i++) + crc = (crc >> 8) ^ crc32tab[(crc ^ (data[i])) & 0xff]; + + return ~crc; +} + +APU_DECLARE(apr_uint32_t) apr_redis_hash_default(void *baton, + const char *data, + const apr_size_t data_len) +{ + /* The default Perl Client doesn't actually use just crc32 -- it shifts it again + * like this.... + */ + return ((apr_redis_hash_crc32(baton, data, data_len) >> 16) & 0x7fff); +} + +APU_DECLARE(apr_uint32_t) apr_redis_hash(apr_redis_t *rc, + const char *data, + const apr_size_t data_len) +{ + if (rc->hash_func) { + return rc->hash_func(rc->hash_baton, data, data_len); + } + else { + return apr_redis_hash_default(NULL, data, data_len); + } +} + +static apr_status_t get_server_line(apr_redis_conn_t *conn) +{ + apr_size_t bsize = BUFFER_SIZE; + apr_status_t rv = APR_SUCCESS; + + rv = apr_brigade_split_line(conn->tb, conn->bb, APR_BLOCK_READ, + BUFFER_SIZE); + + if (rv != APR_SUCCESS) { + return rv; + } + + rv = apr_brigade_flatten(conn->tb, conn->buffer, &bsize); + + if (rv != APR_SUCCESS) { + return rv; + } + + conn->blen = bsize; + conn->buffer[bsize] = '\0'; + + return apr_brigade_cleanup(conn->tb); +} + +APU_DECLARE(apr_status_t) apr_redis_set(apr_redis_t *rc, + const char *key, + char *data, + const apr_size_t data_size, + apr_uint16_t flags) +{ + apr_uint32_t hash; + apr_redis_server_t *rs; + apr_redis_conn_t *conn; + apr_status_t rv; + apr_size_t written; + struct iovec vec[9]; + char keysize_str[LILBUFF_SIZE]; + char datasize_str[LILBUFF_SIZE]; + apr_size_t len, klen; + + klen = strlen(key); + hash = apr_redis_hash(rc, key, klen); + + rs = apr_redis_find_server_hash(rc, hash); + + if (rs == NULL) + return APR_NOTFOUND; + + rv = rs_find_conn(rs, &conn); + + if (rv != APR_SUCCESS) { + apr_redis_disable_server(rc, rs); + return rv; + } + + /* + * RESP Command: + * *3 + * $3 + * SET + * $<keylen> + * key + * $<datalen> + * data + */ + + vec[0].iov_base = RC_RESP_3; + vec[0].iov_len = RC_RESP_3_LEN; + + vec[1].iov_base = RC_SET_SIZE; + vec[1].iov_len = RC_SET_SIZE_LEN; + + vec[2].iov_base = RC_SET; + vec[2].iov_len = RC_SET_LEN; + + len = apr_snprintf(keysize_str, LILBUFF_SIZE, "$%" APR_SIZE_T_FMT "\r\n", klen); + vec[3].iov_base = keysize_str; + vec[3].iov_len = len; + + vec[4].iov_base = (void *) key; + vec[4].iov_len = klen; + + vec[5].iov_base = RC_EOL; + vec[5].iov_len = RC_EOL_LEN; + + len = apr_snprintf(datasize_str, LILBUFF_SIZE, "$%" APR_SIZE_T_FMT "\r\n", + data_size); + vec[6].iov_base = datasize_str; + vec[6].iov_len = len; + + vec[7].iov_base = data; + vec[7].iov_len = data_size; + + vec[8].iov_base = RC_EOL; + vec[8].iov_len = RC_EOL_LEN; + + rv = apr_socket_sendv(conn->sock, vec, 9, &written); + + if (rv != APR_SUCCESS) { + rs_bad_conn(rs, conn); + apr_redis_disable_server(rc, rs); + return rv; + } + + rv = get_server_line(conn); + if (rv != APR_SUCCESS) { + rs_bad_conn(rs, conn); + apr_redis_disable_server(rc, rs); + return rv; + } + + if (strcmp(conn->buffer, RS_STORED RC_EOL) == 0) { + rv = APR_SUCCESS; + } + else if (strcmp(conn->buffer, RS_NOT_STORED RC_EOL) == 0) { + rv = APR_EEXIST; + } + else { + rv = APR_EGENERAL; + } + + rs_release_conn(rs, conn); + return rv; +} + +APU_DECLARE(apr_status_t) apr_redis_setex(apr_redis_t *rc, + const char *key, + char *data, + const apr_size_t data_size, + apr_uint32_t timeout, + apr_uint16_t flags) +{ + apr_uint32_t hash; + apr_redis_server_t *rs; + apr_redis_conn_t *conn; + apr_status_t rv; + apr_size_t written; + struct iovec vec[11]; + char keysize_str[LILBUFF_SIZE]; + char expire_str[LILBUFF_SIZE]; + char expiresize_str[LILBUFF_SIZE]; + char datasize_str[LILBUFF_SIZE]; + apr_size_t len, klen, expire_len; + + + klen = strlen(key); + hash = apr_redis_hash(rc, key, klen); + + rs = apr_redis_find_server_hash(rc, hash); + + if (rs == NULL) + return APR_NOTFOUND; + + rv = rs_find_conn(rs, &conn); + + if (rv != APR_SUCCESS) { + apr_redis_disable_server(rc, rs); + return rv; + } + + /* + * RESP Command: + * *4 + * $5 + * SETEX + * $<keylen> + * key + * $<expirelen> + * expirey + * $<datalen> + * data + */ + + vec[0].iov_base = RC_RESP_4; + vec[0].iov_len = RC_RESP_4_LEN; + + vec[1].iov_base = RC_SETEX_SIZE; + vec[1].iov_len = RC_SETEX_SIZE_LEN; + + vec[2].iov_base = RC_SETEX; + vec[2].iov_len = RC_SETEX_LEN; + + len = apr_snprintf(keysize_str, LILBUFF_SIZE, "$%" APR_SIZE_T_FMT "\r\n", klen); + vec[3].iov_base = keysize_str; + vec[3].iov_len = len; + + vec[4].iov_base = (void *) key; + vec[4].iov_len = klen; + + vec[5].iov_base = RC_EOL; + vec[5].iov_len = RC_EOL_LEN; + + expire_len = apr_snprintf(expire_str, LILBUFF_SIZE, "%u\r\n", timeout); + len = apr_snprintf(expiresize_str, LILBUFF_SIZE, "$%" APR_SIZE_T_FMT "\r\n", + expire_len - 2); + vec[6].iov_base = (void *) expiresize_str; + vec[6].iov_len = len; + + vec[7].iov_base = (void *) expire_str; + vec[7].iov_len = expire_len; + + len = apr_snprintf(datasize_str, LILBUFF_SIZE, "$%" APR_SIZE_T_FMT "\r\n", + data_size); + vec[8].iov_base = datasize_str; + vec[8].iov_len = len; + + vec[9].iov_base = data; + vec[9].iov_len = data_size; + + vec[10].iov_base = RC_EOL; + vec[10].iov_len = RC_EOL_LEN; + + rv = apr_socket_sendv(conn->sock, vec, 11, &written); + + if (rv != APR_SUCCESS) { + rs_bad_conn(rs, conn); + apr_redis_disable_server(rc, rs); + return rv; + } + + rv = get_server_line(conn); + if (rv != APR_SUCCESS) { + rs_bad_conn(rs, conn); + apr_redis_disable_server(rc, rs); + return rv; + } + + if (strcmp(conn->buffer, RS_STORED RC_EOL) == 0) { + rv = APR_SUCCESS; + } + else if (strcmp(conn->buffer, RS_NOT_STORED RC_EOL) == 0) { + rv = APR_EEXIST; + } + else { + rv = APR_EGENERAL; + } + + rs_release_conn(rs, conn); + return rv; +} + +static apr_status_t grab_bulk_resp(apr_redis_server_t *rs, apr_redis_t *rc, + apr_redis_conn_t *conn, apr_pool_t *p, + char **baton, apr_size_t *new_length) +{ + char *length; + char *last; + apr_status_t rv; + apr_size_t len = 0; + *new_length = 0; + + length = apr_strtok(conn->buffer + 1, " ", &last); + if (length) { + len = strtol(length, (char **) NULL, 10); + } + + if (len == 0) { + *new_length = 0; + *baton = NULL; + } + else { + apr_bucket_brigade *bbb; + apr_bucket *e; + + /* eat the trailing \r\n */ + rv = apr_brigade_partition(conn->bb, len + 2, &e); + + if (rv != APR_SUCCESS) { + rs_bad_conn(rs, conn); + if (rc) + apr_redis_disable_server(rc, rs); + return rv; + } + + bbb = apr_brigade_split(conn->bb, e); + + rv = apr_brigade_pflatten(conn->bb, baton, &len, p); + + if (rv != APR_SUCCESS) { + rs_bad_conn(rs, conn); + if (rc) + apr_redis_disable_server(rc, rs); + return rv; + } + + rv = apr_brigade_destroy(conn->bb); + if (rv != APR_SUCCESS) { + rs_bad_conn(rs, conn); + if (rc) + apr_redis_disable_server(rc, rs); + return rv; + } + + conn->bb = bbb; + + *new_length = len - 2; + (*baton)[*new_length] = '\0'; + } + return APR_SUCCESS; + +} + +APU_DECLARE(apr_status_t) apr_redis_getp(apr_redis_t *rc, + apr_pool_t *p, + const char *key, + char **baton, + apr_size_t *new_length, + apr_uint16_t *flags) +{ + apr_status_t rv; + apr_redis_server_t *rs; + apr_redis_conn_t *conn; + apr_uint32_t hash; + apr_size_t written; + apr_size_t len, klen; + struct iovec vec[6]; + char keysize_str[LILBUFF_SIZE]; + + klen = strlen(key); + hash = apr_redis_hash(rc, key, klen); + rs = apr_redis_find_server_hash(rc, hash); + + if (rs == NULL) + return APR_NOTFOUND; + + rv = rs_find_conn(rs, &conn); + + if (rv != APR_SUCCESS) { + apr_redis_disable_server(rc, rs); + return rv; + } + + /* + * RESP Command: + * *2 + * $3 + * GET + * $<keylen> + * key + */ + vec[0].iov_base = RC_RESP_2; + vec[0].iov_len = RC_RESP_2_LEN; + + vec[1].iov_base = RC_GET_SIZE; + vec[1].iov_len = RC_GET_SIZE_LEN; + + vec[2].iov_base = RC_GET; + vec[2].iov_len = RC_GET_LEN; + + len = apr_snprintf(keysize_str, LILBUFF_SIZE, "$%" APR_SIZE_T_FMT "\r\n", + klen); + vec[3].iov_base = keysize_str; + vec[3].iov_len = len; + + vec[4].iov_base = (void *) key; + vec[4].iov_len = klen; + + vec[5].iov_base = RC_EOL; + vec[5].iov_len = RC_EOL_LEN; + + rv = apr_socket_sendv(conn->sock, vec, 6, &written); + + + if (rv != APR_SUCCESS) { + rs_bad_conn(rs, conn); + apr_redis_disable_server(rc, rs); + return rv; + } + + rv = get_server_line(conn); + if (rv != APR_SUCCESS) { + rs_bad_conn(rs, conn); + apr_redis_disable_server(rc, rs); + return rv; + } + if (strncmp(RS_NOT_FOUND_GET, conn->buffer, RS_NOT_FOUND_GET_LEN) == 0) { + rv = APR_NOTFOUND; + } + else if (strncmp(RS_TYPE_STRING, conn->buffer, RS_TYPE_STRING_LEN) == 0) { + rv = grab_bulk_resp(rs, rc, conn, p, baton, new_length); + } + else { + rv = APR_EGENERAL; + } + + rs_release_conn(rs, conn); + return rv; +} + +APU_DECLARE(apr_status_t) + apr_redis_delete(apr_redis_t *rc, const char *key, apr_uint32_t timeout) +{ + apr_status_t rv; + apr_redis_server_t *rs; + apr_redis_conn_t *conn; + apr_uint32_t hash; + apr_size_t written; + struct iovec vec[6]; + apr_size_t len, klen; + char keysize_str[LILBUFF_SIZE]; + + klen = strlen(key); + hash = apr_redis_hash(rc, key, klen); + rs = apr_redis_find_server_hash(rc, hash); + if (rs == NULL) + return APR_NOTFOUND; + + rv = rs_find_conn(rs, &conn); + + if (rv != APR_SUCCESS) { + apr_redis_disable_server(rc, rs); + return rv; + } + + /* + * RESP Command: + * *2 + * $3 + * DEL + * $<keylen> + * key + */ + vec[0].iov_base = RC_RESP_2; + vec[0].iov_len = RC_RESP_2_LEN; + + vec[1].iov_base = RC_DEL_SIZE; + vec[1].iov_len = RC_DEL_SIZE_LEN; + + vec[2].iov_base = RC_DEL; + vec[2].iov_len = RC_DEL_LEN; + + len = apr_snprintf(keysize_str, LILBUFF_SIZE, "$%" APR_SIZE_T_FMT "\r\n", + klen); + vec[3].iov_base = keysize_str; + vec[3].iov_len = len; + + vec[4].iov_base = (void *) key; + vec[4].iov_len = klen; + + vec[5].iov_base = RC_EOL; + vec[5].iov_len = RC_EOL_LEN; + + rv = apr_socket_sendv(conn->sock, vec, 6, &written); + + if (rv != APR_SUCCESS) { + rs_bad_conn(rs, conn); + apr_redis_disable_server(rc, rs); + return rv; + } + + rv = get_server_line(conn); + if (rv != APR_SUCCESS) { + rs_bad_conn(rs, conn); + apr_redis_disable_server(rc, rs); + return rv; + } + + if (strncmp(RS_DELETED, conn->buffer, RS_DELETED_LEN) == 0) { + rv = APR_SUCCESS; + } + else if (strncmp(RS_NOT_FOUND_DEL, conn->buffer, RS_NOT_FOUND_DEL_LEN) == 0) { + rv = APR_NOTFOUND; + } + else { + rv = APR_EGENERAL; + } + + rs_release_conn(rs, conn); + return rv; +} + +APU_DECLARE(apr_status_t) +apr_redis_ping(apr_redis_server_t *rs) +{ + apr_status_t rv; + apr_size_t written; + struct iovec vec[3]; + apr_redis_conn_t *conn; + + rv = rs_find_conn(rs, &conn); + + if (rv != APR_SUCCESS) { + return rv; + } + + /* + * RESP Command: + * *1 + * $4 + * PING + */ + vec[0].iov_base = RC_RESP_1; + vec[0].iov_len = RC_RESP_1_LEN; + + vec[1].iov_base = RC_PING_SIZE; + vec[1].iov_len = RC_PING_SIZE_LEN; + + vec[2].iov_base = RC_PING; + vec[2].iov_len = RC_PING_LEN; + + rv = apr_socket_sendv(conn->sock, vec, 3, &written); + + if (rv != APR_SUCCESS) { + rs_bad_conn(rs, conn); + return rv; + } + + rv = get_server_line(conn); + if (rv == APR_SUCCESS) { + /* we got *something*. Was it Redis? */ + if (strncmp(conn->buffer, "+PONG", sizeof("+PONG")-1) != 0) { + rv = APR_EGENERAL; + } + } + rs_release_conn(rs, conn); + return rv; +} + +APU_DECLARE(apr_status_t) +apr_redis_info(apr_redis_server_t *rs, apr_pool_t *p, char **baton) +{ + apr_status_t rv; + apr_redis_conn_t *conn; + apr_size_t written; + struct iovec vec[3]; + + rv = rs_find_conn(rs, &conn); + + if (rv != APR_SUCCESS) { + return rv; + } + + /* + * RESP Command: + * *1 + * $4 + * INFO + */ + vec[0].iov_base = RC_RESP_1; + vec[0].iov_len = RC_RESP_1_LEN; + + vec[1].iov_base = RC_INFO_SIZE; + vec[1].iov_len = RC_INFO_SIZE_LEN; + + vec[2].iov_base = RC_INFO; + vec[2].iov_len = RC_INFO_LEN; + + rv = apr_socket_sendv(conn->sock, vec, 3, &written); + + if (rv != APR_SUCCESS) { + rs_bad_conn(rs, conn); + return rv; + } + + rv = get_server_line(conn); + if (rv != APR_SUCCESS) { + rs_bad_conn(rs, conn); + return rv; + } + + if (strncmp(RS_TYPE_STRING, conn->buffer, RS_TYPE_STRING_LEN) == 0) { + apr_size_t nl; + rv = grab_bulk_resp(rs, NULL, conn, p, baton, &nl); + } else { + rs_bad_conn(rs, conn); + rv = APR_EGENERAL; + } + + rs_release_conn(rs, conn); + return rv; +} + +#define RV_FIELD "redis_version:" +APU_DECLARE(apr_status_t) +apr_redis_version(apr_redis_server_t *rs, apr_pool_t *p, char **baton) +{ + apr_status_t rv; + char *ptr, *eptr; + apr_pool_t *subpool; + + /* Have we already obtained the version number? */ + if (rs->version.minor != 0) { + if (baton) + *baton = apr_pstrdup(p, rs->version.number); + return APR_SUCCESS; + } + if (apr_pool_create(&subpool, p) != APR_SUCCESS) { + /* well, we tried */ + subpool = p; + } + rv = apr_redis_info(rs, subpool, baton); + + if (rv != APR_SUCCESS) { + if (subpool != p) { + apr_pool_destroy(subpool); + } + return rv; + } + + ptr = strstr(*baton, RV_FIELD); + if (ptr) { + rs->version.major = strtol(ptr + sizeof(RV_FIELD) - 1, &eptr, 10); + ptr = eptr + 1; + rs->version.minor = strtol(ptr, &eptr, 10); + ptr = eptr + 1; + rs->version.patch = strtol(ptr, &eptr, 10); + rs->version.number = apr_psprintf(rs->p, "%d.%d.%d", + rs->version.major, rs->version.minor, + rs->version.patch); + } + if (baton) + *baton = apr_pstrdup(p, rs->version.number); + if (subpool != p) { + apr_pool_destroy(subpool); + } + return APR_SUCCESS; +} + +static apr_status_t plus_minus(apr_redis_t *rc, + int incr, + const char *key, + apr_int32_t inc, + apr_uint32_t *new_value) +{ + apr_status_t rv; + apr_redis_server_t *rs; + apr_redis_conn_t *conn; + apr_uint32_t hash; + apr_size_t written; + apr_size_t len, klen; + struct iovec vec[12]; + char keysize_str[LILBUFF_SIZE]; + char inc_str[LILBUFF_SIZE]; + char inc_str_len[LILBUFF_SIZE]; + int i = 0; + + klen = strlen(key); + hash = apr_redis_hash(rc, key, klen); + rs = apr_redis_find_server_hash(rc, hash); + if (rs == NULL) + return APR_NOTFOUND; + + rv = rs_find_conn(rs, &conn); + + if (rv != APR_SUCCESS) { + apr_redis_disable_server(rc, rs); + return rv; + } + + /* + * RESP Command: + * *2|*3 + * $4|$6 + * INCR/DECR|INCRBY/DECRBY + * $<keylen> + * key + * <:inc> + */ + if (inc == 1) { + vec[i].iov_base = RC_RESP_2; + vec[i].iov_len = RC_RESP_2_LEN; + i++; + + vec[i].iov_base = "$4\r\n"; + vec[i].iov_len = sizeof("$4\r\n")-1; + i++; + + if (incr) + vec[i].iov_base = "INCR\r\n"; + else + vec[i].iov_base = "DECR\r\n"; + vec[i].iov_len = sizeof("INCR\r\n")-1; + i++; + } + else { + vec[i].iov_base = RC_RESP_3; + vec[i].iov_len = RC_RESP_3_LEN; + i++; + + vec[i].iov_base = "$6\r\n"; + vec[i].iov_len = sizeof("$6\r\n")-1; + i++; + + if (incr) + vec[i].iov_base = "INCRBY\r\n"; + else + vec[i].iov_base = "DECRBY\r\n"; + vec[i].iov_len = sizeof("INCRBY\r\n")-1; + i++; + } + + len = apr_snprintf(keysize_str, LILBUFF_SIZE, "$%" APR_SIZE_T_FMT "\r\n", + klen); + vec[i].iov_base = keysize_str; + vec[i].iov_len = len; + i++; + + vec[i].iov_base = (void *) key; + vec[i].iov_len = klen; + i++; + + vec[i].iov_base = RC_EOL; + vec[i].iov_len = RC_EOL_LEN; + i++; + + if (inc != 1) { + len = apr_snprintf(inc_str, LILBUFF_SIZE, "%d\r\n", inc); + klen = apr_snprintf(inc_str_len, LILBUFF_SIZE, "$%d\r\n", (int)(len-2)); + vec[i].iov_base = inc_str_len; + vec[i].iov_len = klen; + i++; + + vec[i].iov_base = inc_str; + vec[i].iov_len = len; + i++; + + vec[i].iov_base = RC_EOL; + vec[i].iov_len = RC_EOL_LEN; + i++; + } + + rv = apr_socket_sendv(conn->sock, vec, i, &written); + + if (rv != APR_SUCCESS) { + rs_bad_conn(rs, conn); + apr_redis_disable_server(rc, rs); + return rv; + } + + rv = get_server_line(conn); + if (rv != APR_SUCCESS) { + rs_bad_conn(rs, conn); + apr_redis_disable_server(rc, rs); + return rv; + } + if (strncmp(RS_NOT_FOUND_GET, conn->buffer, RS_NOT_FOUND_GET_LEN) == 0) { + rv = APR_NOTFOUND; + } + else if (*conn->buffer == ':') { + *new_value = atoi((const char *)(conn->buffer + 1)); + rv = APR_SUCCESS; + } + else { + rv = APR_EGENERAL; + } + rs_release_conn(rs, conn); + return rv; +} + +APU_DECLARE(apr_status_t) +apr_redis_incr(apr_redis_t *rc, const char *key, apr_int32_t inc, apr_uint32_t *new_value) +{ + return plus_minus(rc, 1, key, inc, new_value); +} + +APU_DECLARE(apr_status_t) +apr_redis_decr(apr_redis_t *rc, const char *key, apr_int32_t inc, apr_uint32_t *new_value) +{ + return plus_minus(rc, 0, key, inc, new_value); +} + +APU_DECLARE(apr_status_t) +apr_redis_multgetp(apr_redis_t *rc, + apr_pool_t *temp_pool, + apr_pool_t *data_pool, + apr_hash_t *values) +{ + return APR_ENOTIMPL; +} + +/** + * Define all of the strings for stats + */ + +#define STAT_process_id "process_id:" +#define STAT_process_id_LEN (sizeof(STAT_process_id)-1) + +#define STAT_uptime_in_seconds "uptime_in_seconds:" +#define STAT_uptime_in_seconds_LEN (sizeof(STAT_uptime_in_seconds)-1) + +#define STAT_arch_bits "arch_bits:" +#define STAT_arch_bits_LEN (sizeof(STAT_arch_bits)-1) + +#define STAT_connected_clients "connected_clients:" +#define STAT_connected_clients_LEN (sizeof(STAT_connected_clients)-1) + +#define STAT_blocked_clients "blocked_clients:" +#define STAT_blocked_clients_LEN (sizeof(STAT_blocked_clients)-1) + +#define STAT_maxmemory "maxmemory:" +#define STAT_maxmemory_LEN (sizeof(STAT_maxmemory)-1) + +#define STAT_used_memory "used_memory:" +#define STAT_used_memory_LEN (sizeof(STAT_used_memory)-1) + +#define STAT_total_system_memory "total_system_memory:" +#define STAT_total_system_memory_LEN (sizeof(STAT_total_system_memory)-1) + +#define STAT_total_connections_received "total_connections_received:" +#define STAT_total_connections_received_LEN (sizeof(STAT_total_connections_received)-1) + +#define STAT_total_commands_processed "total_commands_processed:" +#define STAT_total_commands_processed_LEN (sizeof(STAT_total_commands_processed)-1) + +#define STAT_rejected_connections "rejected_connections:" +#define STAT_rejected_connections_LEN (sizeof(STAT_rejected_connections)-1) + +#define STAT_total_net_input_bytes "total_net_input_bytes:" +#define STAT_total_net_input_bytes_LEN (sizeof(STAT_total_net_input_bytes)-1) + +#define STAT_total_net_output_bytes "total_net_output_bytes:" +#define STAT_total_net_output_bytes_LEN (sizeof(STAT_total_net_output_bytes)-1) + +#define STAT_keyspace_hits "keyspace_hits:" +#define STAT_keyspace_hits_LEN (sizeof(STAT_keyspace_hits)-1) + +#define STAT_keyspace_misses "keyspace_misses:" +#define STAT_keyspace_misses_LEN (sizeof(STAT_keyspace_misses)-1) + +#define STAT_connected_slaves "connected_slaves:" +#define STAT_connected_slaves_LEN (sizeof(STAT_connected_slaves)-1) + +#define STAT_used_cpu_sys "used_cpu_sys:" +#define STAT_used_cpu_sys_LEN (sizeof(STAT_used_cpu_sys)-1) + +#define STAT_used_cpu_user "used_cpu_user:" +#define STAT_used_cpu_user_LEN (sizeof(STAT_used_cpu_user)-1) + +#define STAT_cluster_enabled "cluster_enabled:" +#define STAT_cluster_enabled_LEN (sizeof(STAT_cluster_enabled)-1) + +static apr_uint32_t stat_read_uint32( char *buf) +{ + return atoi(buf); +} + +static apr_uint64_t stat_read_uint64(char *buf) +{ + return apr_atoi64(buf); +} + +#define rc_do_stat(name, type) \ + if ((ptr = strstr(info , STAT_ ## name )) != NULL ) { \ + char *str = ptr + (STAT_ ## name ## _LEN ); \ + stats-> name = stat_read_ ## type (str); \ + } + +static void update_stats(char *info, apr_redis_stats_t *stats) +{ + char *ptr; + + rc_do_stat(process_id, uint32); + rc_do_stat(uptime_in_seconds, uint32); + rc_do_stat(arch_bits, uint32); + rc_do_stat(connected_clients, uint32); + rc_do_stat(blocked_clients, uint32); + rc_do_stat(maxmemory, uint64); + rc_do_stat(used_memory, uint64); + rc_do_stat(total_system_memory, uint64); + rc_do_stat(total_connections_received, uint64); + rc_do_stat(total_commands_processed, uint64); + rc_do_stat(rejected_connections, uint64); + rc_do_stat(total_net_input_bytes, uint64); + rc_do_stat(total_net_output_bytes, uint64); + rc_do_stat(keyspace_hits, uint64); + rc_do_stat(keyspace_misses, uint64); + rc_do_stat(connected_slaves, uint32); + rc_do_stat(used_cpu_sys, uint32); + rc_do_stat(used_cpu_user, uint32); + rc_do_stat(cluster_enabled, uint32); +} + +APU_DECLARE(apr_status_t) +apr_redis_stats(apr_redis_server_t *rs, + apr_pool_t *p, + apr_redis_stats_t **stats) +{ + apr_status_t rv; + char *info; + apr_pool_t *subpool; + apr_redis_stats_t *ret; + char *ptr; + + if (apr_pool_create(&subpool, p) != APR_SUCCESS) { + /* well, we tried */ + subpool = p; + } + rv = apr_redis_info(rs, subpool, &info); + + if (rv != APR_SUCCESS) { + if (subpool != p) { + apr_pool_destroy(subpool); + } + return rv; + } + ret = apr_pcalloc(p, sizeof(apr_redis_stats_t)); + /* Get the bulk of the stats */ + update_stats(info, ret); + + /* Now the version number */ + if (rs->version.major != 0) { + ret->major = rs->version.major; + ret->minor = rs->version.minor; + ret->patch = rs->version.patch; + } + else { + char *eptr; + ptr = strstr(info, RV_FIELD); + if (ptr) { + ret->major = rs->version.major = strtol(ptr + sizeof(RV_FIELD) - 1, &eptr, 10); + ptr = eptr + 1; + ret->minor = rs->version.minor = strtol(ptr, &eptr, 10); + ptr = eptr + 1; + ret->patch = rs->version.patch = strtol(ptr, &eptr, 10); + } + } + + /* Finally, the role */ + ptr = strstr(info, "role:"); + if (!ptr) { + ret->role = APR_RS_SERVER_UNKNOWN; + } + else if (!strncmp("master", ptr + sizeof("role:") - 1, sizeof("master")-1)) { + ret->role = APR_RS_SERVER_MASTER; + } + else { + ret->role = APR_RS_SERVER_SLAVE; + } + if (stats) { + *stats = ret; + } + + return APR_SUCCESS; +} |