/*
* 设置配置中的 off slot
*/
char *
ngx_conf_set_off_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
{
char *p = conf;
off_t *op;
ngx_str_t *value;
ngx_conf_post_t *post;
op = (off_t *) (p + cmd->offset);
if (*op != NGX_CONF_UNSET) {
return "is duplicate";
}
value = cf->args->elts;
*op = ngx_parse_offset(&value[1]);
if (*op == (off_t) NGX_ERROR) {
return "invalid value";
}
if (cmd->post) {
post = cmd->post;
return post->post_handler(cf, post, op);
}
return NGX_CONF_OK;
}
char *
ngx_http_file_cache_set_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
{
off_t max_size;
u_char *last, *p;
time_t inactive;
ssize_t size;
ngx_str_t s, name, *value;
ngx_uint_t i, n;
ngx_http_file_cache_t *cache;
cache = ngx_pcalloc(cf->pool, sizeof(ngx_http_file_cache_t));
if (cache == NULL) {
return NGX_CONF_ERROR;
}
cache->path = ngx_pcalloc(cf->pool, sizeof(ngx_path_t));
if (cache->path == NULL) {
return NGX_CONF_ERROR;
}
inactive = 600;
name.len = 0;
size = 0;
max_size = NGX_MAX_OFF_T_VALUE;
value = cf->args->elts;
cache->path->name = value[1];
if (cache->path->name.data[cache->path->name.len - 1] == '/') {
cache->path->name.len--;
}
if (ngx_conf_full_name(cf->cycle, &cache->path->name, 0) != NGX_OK) {
return NGX_CONF_ERROR;
}
for (i = 2; i < cf->args->nelts; i++) {
if (ngx_strncmp(value[i].data, "levels=", 7) == 0) {
p = value[i].data + 7;
last = value[i].data + value[i].len;
for (n = 0; n < 3 && p < last; n++) {
if (*p > '0' && *p < '3') {
cache->path->level[n] = *p++ - '0';
cache->path->len += cache->path->level[n] + 1;
if (p == last) {
break;
}
if (*p++ == ':' && n < 2 && p != last) {
continue;
}
goto invalid_levels;
}
goto invalid_levels;
}
if (cache->path->len < 10 + 3) {
continue;
}
invalid_levels:
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"invalid \"levels\" \"%V\"", &value[i]);
return NGX_CONF_ERROR;
}
if (ngx_strncmp(value[i].data, "keys_zone=", 10) == 0) {
name.data = value[i].data + 10;
p = (u_char *) ngx_strchr(name.data, ':');
if (p) {
*p = '\0';
name.len = p - name.data;
p++;
s.len = value[i].data + value[i].len - p;
s.data = p;
size = ngx_parse_size(&s);
if (size > 8191) {
continue;
}
}
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"invalid keys zone size \"%V\"", &value[i]);
return NGX_CONF_ERROR;
}
if (ngx_strncmp(value[i].data, "inactive=", 9) == 0) {
s.len = value[i].len - 9;
s.data = value[i].data + 9;
inactive = ngx_parse_time(&s, 1);
if (inactive < 0) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"invalid inactive value \"%V\"", &value[i]);
return NGX_CONF_ERROR;
}
continue;
}
if (ngx_strncmp(value[i].data, "max_size=", 9) == 0) {
s.len = value[i].len - 9;
s.data = value[i].data + 9;
max_size = ngx_parse_offset(&s);
if (max_size < 0) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"invalid max_size value \"%V\"", &value[i]);
return NGX_CONF_ERROR;
}
continue;
}
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"invalid parameter \"%V\"", &value[i]);
return NGX_CONF_ERROR;
}
if (name.len == 0 || size == 0) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"\"%V\" must have \"keys_zone\" parameter",
&cmd->name);
return NGX_CONF_ERROR;
}
cache->path->manager = ngx_http_file_cache_manager;
cache->path->loader = ngx_http_file_cache_loader;
cache->path->data = cache;
if (ngx_add_path(cf, &cache->path) != NGX_OK) {
return NGX_CONF_ERROR;
}
cache->shm_zone = ngx_shared_memory_add(cf, &name, size, cmd->post);
if (cache->shm_zone == NULL) {
return NGX_CONF_ERROR;
}
if (cache->shm_zone->data) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"duplicate zone \"%V\"", &name);
return NGX_CONF_ERROR;
}
cache->shm_zone->init = ngx_http_file_cache_init;
cache->shm_zone->data = cache;
cache->inactive = inactive;
cache->max_size = max_size;
return NGX_CONF_OK;
}
ngx_int_t
ngx_pipe_rollback_parse_args(ngx_cycle_t *cycle, ngx_open_pipe_t *op,
ngx_pipe_rollback_conf_t *rbcf)
{
u_char **argv;
ngx_uint_t i;
ngx_int_t j;
size_t len;
ngx_str_t filename;
ngx_str_t value;
uint32_t hash;
if (op->argv->nelts < 3) {
//no logname
return NGX_ERROR;
}
//parse args
argv = op->argv->elts;
//set default param
filename.data = (u_char *) argv[1];
filename.len = ngx_strlen(filename.data);
if (ngx_conf_full_name(cycle, &filename, 0) != NGX_OK) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
"get fullname failed");
return NGX_ERROR;
}
rbcf->logname = (char *) filename.data;
rbcf->backup_num = 1;
rbcf->log_max_size = -1;
rbcf->interval = -1;
rbcf->suitpath = NULL;
rbcf->adjust_time = 60;
rbcf->adjust_time_raw = 60;
memset(rbcf->backup, 0, sizeof(rbcf->backup));
for (i = 2; i < op->argv->nelts; i++) {
if (argv[i] == NULL) {
break;
}
if (ngx_strncmp((u_char *) "interval=", argv[i], 9) == 0) {
value.data = argv[i] + 9;
value.len = ngx_strlen((char *) argv[i]) - 9;
#ifdef T_PIPE_OLD_CONF
//just compatibility
rbcf->interval = ngx_atoi(value.data, value.len);
if (rbcf->interval > 0) {
rbcf->interval = rbcf->interval * 60; //convert minute to second
continue;
}
#endif
rbcf->interval = ngx_parse_time(&value, 1);
if (rbcf->interval <= 0) {
rbcf->interval = -1;
}
} else if (ngx_strncmp((u_char *) "baknum=", argv[i], 7) == 0) {
rbcf->backup_num = ngx_atoi(argv[i] + 7,
ngx_strlen((char *) argv[i]) - 7);
if (rbcf->backup_num <= 0) {
rbcf->backup_num = 1;
} else if (MAX_BACKUP_NUM < (size_t)rbcf->backup_num) {
rbcf->backup_num = MAX_BACKUP_NUM;
}
} else if (ngx_strncmp((u_char *) "maxsize=", argv[i], 8) == 0) {
value.data = argv[i] + 8;
value.len = ngx_strlen((char *) argv[i]) - 8;
#ifdef T_PIPE_OLD_CONF
//just compatibility
rbcf->log_max_size = ngx_atoi(value.data, value.len);
if (rbcf->log_max_size > 0) {
rbcf->log_max_size = rbcf->log_max_size * 1024 * 1024; //M
continue;
}
#endif
rbcf->log_max_size = ngx_parse_offset(&value);
if (rbcf->log_max_size <= 0) {
rbcf->log_max_size = -1;
}
} else if (ngx_strncmp((u_char *) "suitpath=", argv[i], 9) == 0) {
filename.data = (u_char*)(argv[i] + 9);
filename.len = ngx_strlen(filename.data);
if (ngx_conf_full_name(cycle, &filename, 0) != NGX_OK) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
"get fullname failed");
return NGX_ERROR;
}
rbcf->suitpath = (char*)filename.data;
rbcf->time_now = ngx_pipe_get_now_sec();
ngx_pipe_create_suitpath(cycle, rbcf);
} else if (ngx_strncmp((u_char *) "adjust=", argv[i], 7) == 0) {
value.data =argv[i] + 7;
value.len = ngx_strlen((char *) argv[i]) - 7;
rbcf->adjust_time_raw = ngx_parse_time(&value, 1);
if (rbcf->adjust_time_raw < 1) {
rbcf->adjust_time_raw = 1;
}
}
}
len = ngx_strlen(rbcf->logname) + 5; //max is ".128"
for (j = 0; j < rbcf->backup_num; j++) {
rbcf->backup[j] = ngx_pcalloc(cycle->pool, len);
if (rbcf->backup[j] == NULL) {
return NGX_ERROR;
}
ngx_snprintf((u_char *) rbcf->backup[j], len, "%s.%i%Z", rbcf->logname, j + 1);
}
//use same seed for same log file, when reload may have same adjust time
hash = ngx_crc32_short((u_char*)rbcf->logname, ngx_strlen(rbcf->logname));
srand(hash);
rbcf->adjust_time = rand() % rbcf->adjust_time_raw;
ngx_log_error(NGX_LOG_INFO, cycle->log, 0,
"log rollback param: num [%i], interval %i(S), size %i(B), adjust %i/%i(S)",
rbcf->backup_num, rbcf->interval, rbcf->log_max_size, rbcf->adjust_time, rbcf->adjust_time_raw);
return NGX_OK;
}
/*
* Q: 怎样找到函数中创建的 ngx_http_file_cache_t？
* A: 1. 可以通过path中的data字段找到此cache
* 2. 通过共享内存区 shm_zone.data 字段找到
*/
char *
ngx_http_file_cache_set_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
{
off_t max_size; // cache磁盘空间大小
u_char *last, *p;
time_t inactive; // cache不活跃的时间
ssize_t size; // 共享内存区的大小（必须大于8k）
ngx_str_t s, name, *value; // name: 共享内存区的名称
ngx_int_t loader_files;
ngx_msec_t loader_sleep, loader_threshold;
ngx_uint_t i, n;
ngx_http_file_cache_t *cache;
cache = ngx_pcalloc(cf->pool, sizeof(ngx_http_file_cache_t));
if (cache == NULL) {
return NGX_CONF_ERROR;
}
cache->path = ngx_pcalloc(cf->pool, sizeof(ngx_path_t));
if (cache->path == NULL) {
return NGX_CONF_ERROR;
}
inactive = 600; // 不活跃时间默认是10分钟
loader_files = 100;
loader_sleep = 50;
loader_threshold = 200;
name.len = 0;
size = 0;
max_size = NGX_MAX_OFF_T_VALUE;
value = cf->args->elts;
// cache路径, 如果以"/"结尾将被自动去掉
cache->path->name = value[1];
if (cache->path->name.data[cache->path->name.len - 1] == '/') {
cache->path->name.len--;
}
// 获取cache的完整路径
if (ngx_conf_full_name(cf->cycle, &cache->path->name, 0) != NGX_OK) {
return NGX_CONF_ERROR;
}
for (i = 2; i < cf->args->nelts; i++) {
// 设置子目录数和子目录的文件名长度
if (ngx_strncmp(value[i].data, "levels=", 7) == 0) {
p = value[i].data + 7;
last = value[i].data + value[i].len;
for (n = 0; n < 3 && p < last; n++) {
if (*p > '0' && *p < '3') {
cache->path->level[n] = *p++ - '0';
cache->path->len += cache->path->level[n] + 1;
if (p == last) {
break;
}
if (*p++ == ':' && n < 2 && p != last) {
continue;
}
goto invalid_levels;
}
goto invalid_levels;
}
if (cache->path->len < 10 + 3) {
continue;
}
invalid_levels:
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"invalid \"levels\" \"%V\"", &value[i]);
return NGX_CONF_ERROR;
}
// 设置cache的共享存储区
if (ngx_strncmp(value[i].data, "keys_zone=", 10) == 0) {
name.data = value[i].data + 10; // 共享内存区的名字
p = (u_char *) ngx_strchr(name.data, ':');
if (p) {
*p = '\0';
name.len = p - name.data; // 共享内存区的名字长度
p++;
s.len = value[i].data + value[i].len - p; // 共享内存区的大小
s.data = p;
size = ngx_parse_size(&s); // 申请的共享内存区大小（必须大于8K）
if (size > 8191) {
continue;
}
}
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"invalid keys zone size \"%V\"", &value[i]);
return NGX_CONF_ERROR;
}
// 设置cache不活跃的时间
if (ngx_strncmp(value[i].data, "inactive=", 9) == 0) {
s.len = value[i].len - 9;
s.data = value[i].data + 9;
inactive = ngx_parse_time(&s, 1);
if (inactive == (time_t) NGX_ERROR) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"invalid inactive value \"%V\"", &value[i]);
return NGX_CONF_ERROR;
}
continue;
}
// 设置缓存磁盘空间大小 max_size
if (ngx_strncmp(value[i].data, "max_size=", 9) == 0) {
s.len = value[i].len - 9;
s.data = value[i].data + 9;
max_size = ngx_parse_offset(&s);
if (max_size < 0) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"invalid max_size value \"%V\"", &value[i]);
return NGX_CONF_ERROR;
}
continue;
}
// loader_files
if (ngx_strncmp(value[i].data, "loader_files=", 13) == 0) {
loader_files = ngx_atoi(value[i].data + 13, value[i].len - 13);
if (loader_files == NGX_ERROR) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"invalid loader_files value \"%V\"", &value[i]);
return NGX_CONF_ERROR;
}
continue;
}
// loader_sleep
if (ngx_strncmp(value[i].data, "loader_sleep=", 13) == 0) {
s.len = value[i].len - 13;
s.data = value[i].data + 13;
loader_sleep = ngx_parse_time(&s, 0);
if (loader_sleep == (ngx_msec_t) NGX_ERROR) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"invalid loader_sleep value \"%V\"", &value[i]);
return NGX_CONF_ERROR;
}
continue;
}
// loader_threshold
if (ngx_strncmp(value[i].data, "loader_threshold=", 17) == 0) {
s.len = value[i].len - 17;
s.data = value[i].data + 17;
loader_threshold = ngx_parse_time(&s, 0);
if (loader_threshold == (ngx_msec_t) NGX_ERROR) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"invalid loader_threshold value \"%V\"", &value[i]);
return NGX_CONF_ERROR;
}
continue;
}
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"invalid parameter \"%V\"", &value[i]);
return NGX_CONF_ERROR;
} // for
if (name.len == 0 || size == 0) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"\"%V\" must have \"keys_zone\" parameter",
&cmd->name);
return NGX_CONF_ERROR;
}
cache->path->manager = ngx_http_file_cache_manager;
cache->path->loader = ngx_http_file_cache_loader;
cache->path->data = cache; // 设置 ngx_http_file_cache_t 结构
cache->path->conf_file = cf->conf_file->file.name.data;
cache->path->line = cf->conf_file->line;
cache->loader_files = loader_files;
cache->loader_sleep = loader_sleep;
cache->loader_threshold = loader_threshold;
// 添加目录到系统管理目录表中
if (ngx_add_path(cf, &cache->path) != NGX_OK) {
return NGX_CONF_ERROR;
}
// 添加共享内存到系统管理表中
cache->shm_zone = ngx_shared_memory_add(cf, &name, size, cmd->post);
if (cache->shm_zone == NULL) {
return NGX_CONF_ERROR;
}
/* e.g. "proxy_cache" 与 "proxy_cache_path" 这两个指令的使用是有顺序的，
"proxy_cache" 指令仅初始化共享内存信息，cache->shm_zone->data字段设置为NULL，
如果data字段被设置，说明重复定义了共享内存区 */
if (cache->shm_zone->data) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"duplicate zone \"%V\"", &name);
return NGX_CONF_ERROR;
}
cache->shm_zone->init = ngx_http_file_cache_init;
cache->shm_zone->data = cache;
cache->inactive = inactive;
cache->max_size = max_size;
return NGX_CONF_OK;
}
char * ngx_http_file_cache_set_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
{
off_t max_size;
u_char *last, *p;
time_t inactive;
ssize_t size;
ngx_str_t s, name, *value;
ngx_int_t loader_files, loader_sleep, loader_threshold;
ngx_uint_t i, n;
ngx_http_file_cache_t *cache;
cache = ngx_pcalloc(cf->pool, sizeof(ngx_http_file_cache_t));
if (cache == NULL) {
return NGX_CONF_ERROR;
}
cache->path = ngx_pcalloc(cf->pool, sizeof(ngx_path_t));
if (cache->path == NULL) {
return NGX_CONF_ERROR;
}
inactive = 600;
loader_files = 100;
loader_sleep = 50;
loader_threshold = 200;
name.len = 0;
size = 0;
max_size = NGX_MAX_OFF_T_VALUE;
value = cf->args->elts;
cache->path->name = value[1];
if (cache->path->name.data[cache->path->name.len - 1] == '/') {
cache->path->name.len--;
}
if (ngx_conf_full_name(cf->cycle, &cache->path->name, 0) != NGX_OK) {
return NGX_CONF_ERROR;
}
for (i = 2; i < cf->args->nelts; i++) {
if (ngx_strncmp(value[i].data, "levels=", 7) == 0) {
p = value[i].data + 7;
last = value[i].data + value[i].len;
for (n = 0; n < 3 && p < last; n++) {
if (*p > '0' && *p < '3') {
cache->path->level[n] = *p++ - '0';
cache->path->len += cache->path->level[n] + 1;
if (p == last) {
break;
}
if (*p++ == ':' && n < 2 && p != last) {
continue;
}
goto invalid_levels;
}
goto invalid_levels;
}
if (cache->path->len < 10 + 3) {
continue;
}
invalid_levels:
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"invalid \"levels\" \"%V\"", &value[i]);
return NGX_CONF_ERROR;
}
if (ngx_strncmp(value[i].data, "keys_zone=", 10) == 0) {
name.data = value[i].data + 10;
//proxy_cache_path /data/proxy_cache_dir levels=1:2 keys_zone=STATIC:200m inactive=1d max_size=30g;
p = (u_char *) ngx_strchr(name.data, ':');//find the
if (p) {
*p = '\0';
name.len = p - name.data; //the shared dir name!!!
p++;
s.len = value[i].data + value[i].len - p;
s.data = p;
size = ngx_parse_size(&s); //The share memory size!!!
if (size > 8191) {
continue;
}
}
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"invalid keys zone size \"%V\"", &value[i]);
return NGX_CONF_ERROR;
}
if (ngx_strncmp(value[i].data, "inactive=", 9) == 0) {
s.len = value[i].len - 9;
s.data = value[i].data + 9;
inactive = ngx_parse_time(&s, 1);
if (inactive < 0) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"invalid inactive value \"%V\"", &value[i]);
return NGX_CONF_ERROR;
}
continue;
}
if (ngx_strncmp(value[i].data, "max_size=", 9) == 0) {
s.len = value[i].len - 9;
s.data = value[i].data + 9;
max_size = ngx_parse_offset(&s);
if (max_size < 0) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"invalid max_size value \"%V\"", &value[i]);
return NGX_CONF_ERROR;
}
continue;
}
if (ngx_strncmp(value[i].data, "loader_files=", 13) == 0) {
loader_files = ngx_atoi(value[i].data + 13, value[i].len - 13);
if (loader_files == NGX_ERROR) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"invalid loader_files value \"%V\"", &value[i]);
return NGX_CONF_ERROR;
}
continue;
}
if (ngx_strncmp(value[i].data, "loader_sleep=", 13) == 0) {
s.len = value[i].len - 13;
s.data = value[i].data + 13;
loader_sleep = ngx_parse_time(&s, 0);
if (loader_sleep < 0) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"invalid loader_sleep value \"%V\"", &value[i]);
return NGX_CONF_ERROR;
}
continue;
}
if (ngx_strncmp(value[i].data, "loader_threshold=", 17) == 0) {
s.len = value[i].len - 17;
s.data = value[i].data + 17;
loader_threshold = ngx_parse_time(&s, 0);
if (loader_threshold < 0) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"invalid loader_threshold value \"%V\"", &value[i]);
return NGX_CONF_ERROR;
}
continue;
}
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"invalid parameter \"%V\"", &value[i]);
return NGX_CONF_ERROR;
}
if (name.len == 0 || size == 0) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"\"%V\" must have \"keys_zone\" parameter",
&cmd->name);
return NGX_CONF_ERROR;
}
cache->path->manager = ngx_http_file_cache_manager;
cache->path->loader = ngx_http_file_cache_loader;
cache->path->data = cache;
cache->path->conf_file = cf->conf_file->file.name.data;
cache->path->line = cf->conf_file->line;
cache->loader_files = loader_files;
cache->loader_sleep = (ngx_msec_t) loader_sleep;
cache->loader_threshold = (ngx_msec_t) loader_threshold;
if (ngx_add_path(cf, &cache->path) != NGX_OK) {
return NGX_CONF_ERROR;
}
//the size is the configed size we set in the proxy_cache_path () !!!
//Here,We create a shm_zone(share memory!!)
cache->shm_zone = ngx_shared_memory_add(cf, &name, size, cmd->post);
if (cache->shm_zone == NULL) {
return NGX_CONF_ERROR;
}
if (cache->shm_zone->data) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"duplicate zone \"%V\"", &name);
return NGX_CONF_ERROR;
}
cache->shm_zone->init = ngx_http_file_cache_init;
cache->shm_zone->data = cache;
cache->inactive = inactive;
cache->max_size = max_size;
return NGX_CONF_OK;
}