forked from alibaba/nginx-tfs
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ngx_http_tfs_module.c
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ngx_http_tfs_module.c
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/*
* Copyright (C) 2010-2012 Alibaba Group Holding Limited
*/
#include <ngx_core.h>
#include <ngx_event.h>
#include <ngx_http.h>
#include <ngx_config.h>
#include <ngx_http_tfs.h>
#include <ngx_http_tfs_timers.h>
#include <ngx_http_tfs_local_block_cache.h>
#define NGX_HTTP_TFS_RCS_ZONE_NAME "tfs_module_rcs_zone"
#define NGX_HTTP_TFS_BLOCK_CACHE_ZONE_NAME "tfs_module_block_cache_zone"
static void *ngx_http_tfs_create_main_conf(ngx_conf_t *cf);
static char *ngx_http_tfs_init_main_conf(ngx_conf_t *cf, void *conf);
static void *ngx_http_tfs_create_srv_conf(ngx_conf_t *cf);
static char *ngx_http_tfs_merge_srv_conf(ngx_conf_t *cf,
void *parent, void *child);
static void *ngx_http_tfs_create_loc_conf(ngx_conf_t *cf);
static char *ngx_http_tfs_merge_loc_conf(ngx_conf_t *cf,
void *parent, void *child);
static ngx_int_t ngx_http_tfs_module_init(ngx_cycle_t *cycle);
static char *ngx_http_tfs_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
static char *ngx_http_tfs_pass(ngx_conf_t *cf, ngx_command_t *cmd,
void *conf);
static char *ngx_http_tfs_tackle_log(ngx_conf_t *cf, ngx_command_t *cmd,
void *conf);
static char *ngx_http_tfs_net_device(ngx_conf_t *cf, ngx_command_t *cmd,
void *conf);
static char *ngx_http_tfs_lowat_check(ngx_conf_t *cf, void *post, void *data);
static void ngx_http_tfs_read_body_handler(ngx_http_request_t *r);
static char *ngx_http_tfs_keepalive(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
static char *ngx_http_tfs_poll_rcs(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
static char *ngx_http_tfs_rcs_zone(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
static char *ngx_http_tfs_block_cache_zone(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
/* rc server keepalive */
static ngx_int_t ngx_http_tfs_check_init_worker(ngx_cycle_t *cycle);
#ifdef NGX_HTTP_TFS_USE_TAIR
/* destroy tair servers */
static void ngx_http_tfs_check_exit_worker(ngx_cycle_t *cycle);
#endif
static ngx_conf_post_t ngx_http_tfs_lowat_post =
{ ngx_http_tfs_lowat_check };
static ngx_command_t ngx_http_tfs_commands[] = {
{ ngx_string("tfs_upstream"),
NGX_HTTP_MAIN_CONF|NGX_CONF_TAKE1,
ngx_http_tfs_upstream,
0,
0,
NULL },
{ ngx_string("tfs_pass"),
NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF|NGX_CONF_TAKE12,
ngx_http_tfs_pass,
NGX_HTTP_LOC_CONF_OFFSET,
0,
NULL },
{ ngx_string("tfs_net_device"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1,
ngx_http_tfs_net_device,
NGX_HTTP_SRV_CONF_OFFSET,
0,
NULL },
{ ngx_string("tfs_keepalive"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE2,
ngx_http_tfs_keepalive,
0,
0,
NULL },
{ ngx_string("tfs_poll_rcs"),
NGX_HTTP_MAIN_CONF|NGX_CONF_TAKE3,
ngx_http_tfs_poll_rcs,
0,
0,
NULL },
{ ngx_string("tfs_tackle_log"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE12,
ngx_http_tfs_tackle_log,
NGX_HTTP_SRV_CONF_OFFSET,
0,
NULL },
{ ngx_string("tfs_connect_timeout"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_conf_set_msec_slot,
0,
offsetof(ngx_http_tfs_main_conf_t, tfs_connect_timeout),
NULL },
{ ngx_string("tfs_send_timeout"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_conf_set_msec_slot,
0,
offsetof(ngx_http_tfs_main_conf_t, tfs_send_timeout),
NULL },
{ ngx_string("tfs_read_timeout"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_conf_set_msec_slot,
0,
offsetof(ngx_http_tfs_main_conf_t, tfs_read_timeout),
NULL },
{ ngx_string("tair_timeout"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_conf_set_msec_slot,
0,
offsetof(ngx_http_tfs_main_conf_t, tair_timeout),
NULL },
{ ngx_string("tfs_send_lowat"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_conf_set_size_slot,
0,
offsetof(ngx_http_tfs_main_conf_t, send_lowat),
&ngx_http_tfs_lowat_post },
{ ngx_string("tfs_buffer_size"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_conf_set_size_slot,
0,
offsetof(ngx_http_tfs_main_conf_t, buffer_size),
NULL },
{ ngx_string("tfs_body_buffer_size"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_conf_set_size_slot,
0,
offsetof(ngx_http_tfs_main_conf_t, body_buffer_size),
NULL },
{ ngx_string("tfs_rcs_zone"),
NGX_HTTP_MAIN_CONF|NGX_CONF_1MORE,
ngx_http_tfs_rcs_zone,
0,
0,
NULL },
{ ngx_string("tfs_block_cache_zone"),
NGX_HTTP_MAIN_CONF|NGX_CONF_1MORE,
ngx_http_tfs_block_cache_zone,
0,
0,
NULL },
{ ngx_string("tfs_enable_remote_block_cache"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_FLAG,
ngx_conf_set_flag_slot,
0,
offsetof(ngx_http_tfs_main_conf_t, enable_remote_block_cache),
NULL },
{ ngx_string("tfs_enable_rcs"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_FLAG,
ngx_conf_set_flag_slot,
0,
offsetof(ngx_http_tfs_main_conf_t, enable_rcs),
NULL },
ngx_null_command
};
static ngx_http_module_t ngx_http_tfs_module_ctx = {
NULL, /* preconfiguration */
NULL, /* postconfiguration */
ngx_http_tfs_create_main_conf, /* create main configuration */
ngx_http_tfs_init_main_conf, /* init main configuration */
ngx_http_tfs_create_srv_conf, /* create server configuration */
ngx_http_tfs_merge_srv_conf, /* merge server configuration */
ngx_http_tfs_create_loc_conf, /* create location configuration */
ngx_http_tfs_merge_loc_conf /* merge location configuration */
};
ngx_module_t ngx_http_tfs_module = {
NGX_MODULE_V1,
&ngx_http_tfs_module_ctx, /* module context */
ngx_http_tfs_commands, /* module directives */
NGX_HTTP_MODULE, /* module type */
NULL, /* init master */
ngx_http_tfs_module_init, /* init module */
ngx_http_tfs_check_init_worker, /* init process */
NULL, /* init thread */
NULL, /* exit thread */
#ifdef NGX_HTTP_TFS_USE_TAIR
ngx_http_tfs_check_exit_worker, /* exit process */
#else
NULL,
#endif
NULL, /* exit master */
NGX_MODULE_V1_PADDING
};
static ngx_int_t
ngx_http_tfs_handler(ngx_http_request_t *r)
{
ngx_int_t rc;
ngx_http_tfs_t *t;
ngx_http_tfs_loc_conf_t *tlcf;
ngx_http_tfs_srv_conf_t *tscf;
ngx_http_tfs_main_conf_t *tmcf;
tlcf = ngx_http_get_module_loc_conf(r, ngx_http_tfs_module);
tscf = ngx_http_get_module_srv_conf(r, ngx_http_tfs_module);
tmcf = ngx_http_get_module_main_conf(r, ngx_http_tfs_module);
t = ngx_pcalloc(r->pool, sizeof(ngx_http_tfs_t));
if (t == NULL) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"alloc ngx_http_tfs_t failed");
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
t->pool = r->pool;
t->data = r;
t->log = r->connection->log;
t->loc_conf = tlcf;
t->srv_conf = tscf;
t->main_conf = tmcf;
t->output.tag = (ngx_buf_tag_t) &ngx_http_tfs_module;
if (tmcf->local_block_cache_ctx != NULL) {
t->block_cache_ctx.use_cache |= NGX_HTTP_TFS_LOCAL_BLOCK_CACHE;
t->block_cache_ctx.local_ctx = tmcf->local_block_cache_ctx;
}
if (tmcf->enable_remote_block_cache == NGX_HTTP_TFS_YES) {
t->block_cache_ctx.use_cache |= NGX_HTTP_TFS_REMOTE_BLOCK_CACHE;
}
t->block_cache_ctx.remote_ctx.data = t;
t->block_cache_ctx.remote_ctx.tair_instance = &tmcf->remote_block_cache_instance;
t->block_cache_ctx.curr_lookup_cache = NGX_HTTP_TFS_LOCAL_BLOCK_CACHE;
rc = ngx_http_restful_parse(r, &t->r_ctx);
if (rc != NGX_OK) {
return rc;
}
t->header_only = r->header_only;
if (!tmcf->enable_rcs && t->r_ctx.version == 2) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"custom file requires tfs_enable_rcs on,"
" and make sure you have MetaServer and RootServer!");
return NGX_HTTP_BAD_REQUEST;
}
switch (t->r_ctx.action.code) {
case NGX_HTTP_TFS_ACTION_CREATE_DIR:
case NGX_HTTP_TFS_ACTION_CREATE_FILE:
case NGX_HTTP_TFS_ACTION_REMOVE_DIR:
case NGX_HTTP_TFS_ACTION_REMOVE_FILE:
case NGX_HTTP_TFS_ACTION_MOVE_DIR:
case NGX_HTTP_TFS_ACTION_MOVE_FILE:
case NGX_HTTP_TFS_ACTION_LS_DIR:
case NGX_HTTP_TFS_ACTION_LS_FILE:
case NGX_HTTP_TFS_ACTION_STAT_FILE:
case NGX_HTTP_TFS_ACTION_KEEPALIVE:
case NGX_HTTP_TFS_ACTION_READ_FILE:
case NGX_HTTP_TFS_ACTION_GET_APPID:
rc = ngx_http_discard_request_body(r);
if (rc != NGX_OK) {
return rc;
}
r->headers_out.content_length_n = -1;
ngx_http_set_ctx(r, t, ngx_http_tfs_module);
r->main->count++;
ngx_http_tfs_read_body_handler(r);
break;
case NGX_HTTP_TFS_ACTION_WRITE_FILE:
r->headers_out.content_length_n = -1;
ngx_http_set_ctx(r, t, ngx_http_tfs_module);
rc = ngx_http_read_client_request_body(r, ngx_http_tfs_read_body_handler);
if (rc >= NGX_HTTP_SPECIAL_RESPONSE) {
return rc;
}
break;
}
return NGX_DONE;
}
static char *
ngx_http_tfs_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
{
ngx_http_tfs_main_conf_t *tmcf = conf;
ngx_url_t u;
ngx_str_t *value, *server_addr;
value = cf->args->elts;
server_addr = &value[1];
ngx_memzero(&u, sizeof(ngx_url_t));
u.url.len = server_addr->len;
u.url.data = server_addr->data;
if (ngx_parse_url(cf->pool, &u) != NGX_OK) {
if (u.err) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"%s in tfs \"%V\"", u.err, &u.url);
}
return NGX_CONF_ERROR;
}
tmcf->ups_addr = u.addrs;
return NGX_CONF_OK;
}
static char *
ngx_http_tfs_keepalive(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
{
ngx_http_tfs_main_conf_t *tmcf = conf;
ngx_int_t max_cached, bucket_count;
ngx_str_t *value, s;
ngx_uint_t i;
ngx_http_connection_pool_t *p;
value = cf->args->elts;
max_cached = 0;
bucket_count = 0;
for (i = 1; i < cf->args->nelts; i++) {
if (ngx_strncmp(value[i].data, "max_cached=", 11) == 0) {
s.len = value[i].len - 11;
s.data = value[i].data + 11;
max_cached = ngx_atoi(s.data, s.len);
if (max_cached == NGX_ERROR || max_cached == 0) {
goto invalid;
}
continue;
}
if (ngx_strncmp(value[i].data, "bucket_count=", 13) == 0) {
s.len = value[i].len - 13;
s.data = value[i].data + 13;
bucket_count = ngx_atoi(s.data, s.len);
if (bucket_count == NGX_ERROR || bucket_count == 0) {
goto invalid;
}
continue;
}
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"invalid parameter \"%V\"", &value[i]);
return NGX_CONF_ERROR;
}
p = ngx_http_connection_pool_init(cf->pool, max_cached, bucket_count);
if (p == NULL) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "connection pool init failed");
return NGX_CONF_ERROR;
}
tmcf->conn_pool = p;
return NGX_CONF_OK;
invalid:
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"invalid value \"%V\" in \"%V\" directive",
&value[i], &cmd->name);
return NGX_CONF_ERROR;
}
static char *
ngx_http_tfs_poll_rcs(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
{
ngx_http_tfs_main_conf_t *tmcf = conf;
ngx_msec_t interval;
ngx_str_t *value, s;
ngx_uint_t i;
ngx_int_t rcs_kp_enable;
value = cf->args->elts;
for (i = 1; i < cf->args->nelts; i++) {
if (ngx_strncmp(value[i].data, "lock_file=", 10) == 0) {
s.data = value[i].data + 10;
s.len = value[i].len - 10;
if (ngx_conf_full_name(cf->cycle, &s, 0) != NGX_OK) {
goto rcs_timers_error;
}
tmcf->lock_file = s;
continue;
}
if (ngx_strncmp(value[i].data, "interval=", 9) == 0) {
s.data = value[i].data + 9;
s.len = value[i].len - 9;
interval = ngx_parse_time(&s, 0);
if (interval == (ngx_msec_t) NGX_ERROR) {
return "invalid value";
}
tmcf->rcs_interval = interval;
continue;
}
if (ngx_strncmp(value[i].data, "enable=", 7) == 0) {
s.data = value[i].data + 7;
s.len = value[i].len - 7;
rcs_kp_enable = ngx_atoi(s.data, s.len);
if (rcs_kp_enable == NGX_ERROR) {
goto rcs_timers_error;
}
tmcf->rcs_kp_enable = rcs_kp_enable;
continue;
}
goto rcs_timers_error;
}
if (tmcf->lock_file.len == 0) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"tfs_poll directive must have lock file");
return NGX_CONF_ERROR;
}
if (tmcf->rcs_interval < NGX_HTTP_TFS_MIN_TIMER_DELAY) {
tmcf->rcs_interval = NGX_HTTP_TFS_MIN_TIMER_DELAY;
ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
"tfs_poll interval is small, so reset this value to 1000");
}
return NGX_CONF_OK;
rcs_timers_error:
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"invalid value \"%V\" in \"%V\" directive",
&value[i], &cmd->name);
return NGX_CONF_ERROR;
}
static char *
ngx_http_tfs_net_device(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
{
ngx_http_tfs_srv_conf_t *tscf = conf;
ngx_int_t rc;
ngx_str_t *value;
value = cf->args->elts;
rc = ngx_http_tfs_get_local_ip(value[1], &tscf->local_addr);
if (rc == NGX_ERROR) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "device is invalid(%V)", &value[1]);
return NGX_CONF_ERROR;
}
ngx_inet_ntop(AF_INET, &tscf->local_addr.sin_addr, tscf->local_addr_text, NGX_INET_ADDRSTRLEN);
return NGX_CONF_OK;
}
static char *
ngx_http_tfs_tackle_log(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
{
ngx_http_tfs_srv_conf_t *tscf = conf;
ngx_str_t *value;
if (tscf->log != NULL) {
return "is duplicate";
}
value = cf->args->elts;
tscf->log = ngx_log_create(cf->cycle, &value[1]);
if (tscf->log == NULL) {
return NGX_CONF_ERROR;
}
if (cf->args->nelts == 2) {
tscf->log->log_level = NGX_LOG_INFO;
}
return ngx_log_set_levels(cf, tscf->log);
}
static void *
ngx_http_tfs_create_srv_conf(ngx_conf_t *cf)
{
ngx_http_tfs_srv_conf_t *conf;
conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_tfs_srv_conf_t));
if (conf == NULL) {
return NGX_CONF_ERROR;
}
return conf;
}
static char *
ngx_http_tfs_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child)
{
return NGX_CONF_OK;
}
static void *
ngx_http_tfs_create_main_conf(ngx_conf_t *cf)
{
ngx_http_tfs_main_conf_t *conf;
conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_tfs_main_conf_t));
if (conf == NULL) {
return NGX_CONF_ERROR;
}
conf->tfs_connect_timeout = NGX_CONF_UNSET_MSEC;
conf->tfs_send_timeout = NGX_CONF_UNSET_MSEC;
conf->tfs_read_timeout = NGX_CONF_UNSET_MSEC;
conf->tair_timeout = NGX_CONF_UNSET_MSEC;
conf->send_lowat = NGX_CONF_UNSET_SIZE;
conf->buffer_size = NGX_CONF_UNSET_SIZE;
conf->body_buffer_size = NGX_CONF_UNSET_SIZE;
conf->rcs_interval = NGX_CONF_UNSET;
conf->conn_pool = NGX_CONF_UNSET_PTR;
conf->enable_remote_block_cache = NGX_CONF_UNSET;
conf->enable_rcs = NGX_CONF_UNSET;
return conf;
}
static char *
ngx_http_tfs_init_main_conf(ngx_conf_t *cf, void *conf)
{
ngx_http_tfs_main_conf_t *tmcf = conf;
if (tmcf->tfs_connect_timeout == NGX_CONF_UNSET_MSEC) {
tmcf->tfs_connect_timeout = 3000;
}
if (tmcf->tfs_send_timeout == NGX_CONF_UNSET_MSEC) {
tmcf->tfs_send_timeout = 3000;
}
if (tmcf->tfs_read_timeout == NGX_CONF_UNSET_MSEC) {
tmcf->tfs_read_timeout = 3000;
}
if (tmcf->tair_timeout == NGX_CONF_UNSET_MSEC) {
tmcf->tair_timeout = 3000;
}
if (tmcf->send_lowat == NGX_CONF_UNSET_SIZE) {
tmcf->send_lowat = 0;
}
if (tmcf->buffer_size == NGX_CONF_UNSET_SIZE) {
tmcf->buffer_size = (size_t) ngx_pagesize / 2;
}
if (tmcf->body_buffer_size == NGX_CONF_UNSET_SIZE) {
tmcf->body_buffer_size = (size_t) ngx_pagesize * 2;
}
if (tmcf->enable_rcs == NGX_CONF_UNSET) {
tmcf->enable_rcs = NGX_HTTP_TFS_NO;
}
return NGX_CONF_OK;
}
static void *
ngx_http_tfs_create_loc_conf(ngx_conf_t *cf)
{
ngx_http_tfs_loc_conf_t *conf;
conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_tfs_loc_conf_t));
if (conf == NULL) {
return NGX_CONF_ERROR;
}
return conf;
}
static char *ngx_http_tfs_merge_loc_conf(ngx_conf_t *cf,
void *parent, void *child)
{
return NGX_CONF_OK;
}
static char *
ngx_http_tfs_pass(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
{
ngx_int_t enable;
ngx_str_t *value, s;
ngx_http_tfs_main_conf_t *tmcf;
ngx_http_tfs_srv_conf_t *tscf;
ngx_http_core_loc_conf_t *clcf;
value = cf->args->elts;
if (ngx_strncmp(value[1].data, "enable=", 7) == 0) {
s.len = value[1].len - 7;
s.data = value[1].data + 7;
enable = ngx_atoi(s.data, s.len);
if (!enable) {
return NGX_CONF_OK;
}
}
clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module);
tscf = ngx_http_conf_get_module_srv_conf(cf, ngx_http_tfs_module);
tmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_tfs_module);
clcf->handler = ngx_http_tfs_handler;
if (clcf->name.data[clcf->name.len - 1] == '/') {
clcf->auto_redirect = 1;
}
if (tmcf->enable_rcs == NGX_CONF_UNSET) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"in tfs module must assign enable rcs, use directives \"tfs_enable_rcs\" ");
return NGX_CONF_ERROR;
}
if (tmcf->enable_rcs) {
if (tscf->local_addr_text[0] == '\0') {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"in tfs module must assign net device name, use directives \"tfs_net_device\" ");
return NGX_CONF_ERROR;
}
s.data = (u_char *) NGX_HTTP_TFS_RCS_ZONE_NAME;
s.len = sizeof(NGX_HTTP_TFS_RCS_ZONE_NAME) - 1;
tmcf->rcs_shm_zone = ngx_shared_memory_add(cf, &s, 0,
&ngx_http_tfs_module);
if (tmcf->rcs_shm_zone == NULL) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"in tfs module must assign rcs shm zone, use directives \"tfs_rcs_zone\" ");
return NGX_CONF_ERROR;
}
}
if (tmcf->local_block_cache_ctx != NULL) {
s.data = (u_char *) NGX_HTTP_TFS_BLOCK_CACHE_ZONE_NAME;
s.len = sizeof(NGX_HTTP_TFS_BLOCK_CACHE_ZONE_NAME) - 1;
tmcf->block_cache_shm_zone = ngx_shared_memory_add(cf, &s, 0,
&ngx_http_tfs_module);
if (tmcf->block_cache_shm_zone == NULL) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"in tfs module must assign block cache shm zone,"\
"use directives \"tfs_block_cache_zone\" ");
return NGX_CONF_ERROR;
}
}
return NGX_CONF_OK;
}
static char *
ngx_http_tfs_lowat_check(ngx_conf_t *cf, void *post, void *data)
{
#if (NGX_FREEBSD)
ssize_t *np = data;
if ((u_long) *np >= ngx_freebsd_net_inet_tcp_sendspace) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"\"tfs_send_lowat\" must be less than %d "
"(sysctl net.inet.tcp.sendspace)",
ngx_freebsd_net_inet_tcp_sendspace);
return NGX_CONF_ERROR;
}
#elif !(NGX_HAVE_SO_SNDLOWAT)
ssize_t *np = data;
ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
"\"tfs_send_lowat\" is not supported, ignored");
*np = 0;
#endif
return NGX_CONF_OK;
}
static char *
ngx_http_tfs_rcs_zone(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
{
ngx_http_tfs_main_conf_t *tmcf = conf;
size_t size;
ngx_str_t *value, s, name;
ngx_uint_t i;
ngx_shm_zone_t *shm_zone;
ngx_http_tfs_rc_ctx_t *ctx;
value = cf->args->elts;
size = 0;
for (i = 1; i < cf->args->nelts; i++) {
if (ngx_strncmp(value[i].data, "size=", 5) == 0) {
s.len = value[i].len - 5;
s.data = value[i].data + 5;
size = ngx_parse_size(&s);
if (size > 8191) {
continue;
}
}
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"invalid parameter \"%V\"", &value[i]);
return NGX_CONF_ERROR;
}
if (size == 0) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"\"%V\" must have \"size\" parameter",
&cmd->name);
return NGX_CONF_ERROR;
}
ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_tfs_rc_ctx_t));
if (ctx == NULL) {
return NGX_CONF_ERROR;
}
name.data = (u_char *) NGX_HTTP_TFS_RCS_ZONE_NAME;
name.len = sizeof(NGX_HTTP_TFS_RCS_ZONE_NAME) - 1;
shm_zone = ngx_shared_memory_add(cf, &name, size,
&ngx_http_tfs_module);
if (shm_zone == NULL) {
return NGX_CONF_ERROR;
}
shm_zone->init = ngx_http_tfs_rc_server_init_zone;
shm_zone->data = ctx;
tmcf->rc_ctx = ctx;
return NGX_CONF_OK;
}
static char *
ngx_http_tfs_block_cache_zone(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
{
size_t size;
ngx_str_t *value, s, name;
ngx_uint_t i;
ngx_shm_zone_t *shm_zone;
ngx_http_tfs_main_conf_t *tmcf = conf;
ngx_http_tfs_local_block_cache_ctx_t *ctx;
value = cf->args->elts;
size = 0;
for (i = 1; i < cf->args->nelts; i++) {
if (ngx_strncmp(value[i].data, "size=", 5) == 0) {
s.len = value[i].len - 5;
s.data = value[i].data + 5;
size = ngx_parse_size(&s);
if (size > 8191) {
continue;
}
}
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"invalid parameter \"%V\"", &value[i]);
return NGX_CONF_ERROR;
}
if (size == 0) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"\"%V\" must have \"size\" parameter",
&cmd->name);
return NGX_CONF_ERROR;
}
ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_tfs_local_block_cache_ctx_t));
if (ctx == NULL) {
return NGX_CONF_ERROR;
}
name.data = (u_char *) NGX_HTTP_TFS_BLOCK_CACHE_ZONE_NAME;
name.len = sizeof(NGX_HTTP_TFS_BLOCK_CACHE_ZONE_NAME) - 1;
shm_zone = ngx_shared_memory_add(cf, &name, size,
&ngx_http_tfs_module);
if (shm_zone == NULL) {
return NGX_CONF_ERROR;
}
shm_zone->init = ngx_http_tfs_local_block_cache_init_zone;
shm_zone->data = ctx;
tmcf->local_block_cache_ctx = ctx;
return NGX_CONF_OK;
}
static void
ngx_http_tfs_read_body_handler(ngx_http_request_t *r)
{
ngx_int_t rc;
ngx_http_tfs_t *t;
ngx_connection_t *c;
c = r->connection;
t = ngx_http_get_module_ctx(r, ngx_http_tfs_module);
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
"http init tfs, client timer: %d", c->read->timer_set);
if (c->read->timer_set) {
ngx_del_timer(c->read);
}
if (ngx_event_flags & NGX_USE_CLEAR_EVENT) {
if (!c->write->active) {
if (ngx_add_event(c->write, NGX_WRITE_EVENT, NGX_CLEAR_EVENT)
== NGX_ERROR)
{
ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
return;
}
}
}
if (t->r_ctx.large_file || t->r_ctx.fsname.file_type == NGX_HTTP_TFS_LARGE_FILE_TYPE) {
t->is_large_file = NGX_HTTP_TFS_YES;
}
if (r->request_body) {
t->send_body = r->request_body->bufs;
if (t->send_body == NULL) {
ngx_http_finalize_request(r, NGX_HTTP_BAD_REQUEST);
return;
}
if (r->headers_in.content_length_n > NGX_HTTP_TFS_USE_LARGE_FILE_SIZE
&& t->r_ctx.version == 1)
{
t->is_large_file = NGX_HTTP_TFS_YES;
}
/* save large file data len here */
if (t->is_large_file) {
t->r_ctx.size = r->headers_in.content_length_n;
}
}
rc = ngx_http_tfs_init(t);
if (rc != NGX_OK) {
switch (rc) {
case NGX_HTTP_SPECIAL_RESPONSE ... NGX_HTTP_INTERNAL_SERVER_ERROR:
ngx_http_finalize_request(r, rc);
break;
default:
ngx_log_error(NGX_LOG_ERR, t->log, 0,
"ngx_http_tfs_init failed");
ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
}
}
}
static ngx_int_t
ngx_http_tfs_module_init(ngx_cycle_t *cycle)
{
ngx_http_tfs_main_conf_t *tmcf;
tmcf = ngx_http_cycle_get_module_main_conf(cycle, ngx_http_tfs_module);
if (tmcf == NULL) {
return NGX_ERROR;
}
if (tmcf->enable_rcs == NGX_HTTP_TFS_NO) {
return NGX_OK;
}
return ngx_http_tfs_timers_init(cycle, tmcf->lock_file.data);
}
static ngx_int_t
ngx_http_tfs_check_init_worker(ngx_cycle_t *cycle)
{
ngx_http_tfs_main_conf_t *tmcf;
/* rc keepalive */
tmcf = ngx_http_cycle_get_module_main_conf(cycle, ngx_http_tfs_module);
if (tmcf == NULL) {
return NGX_ERROR;
}
if (tmcf->enable_rcs == NGX_HTTP_TFS_NO) {
return NGX_OK;
}
if (tmcf->rcs_kp_enable) {
return ngx_http_tfs_add_rcs_timers(cycle, tmcf);
}
return NGX_OK;
}
#ifdef NGX_HTTP_TFS_USE_TAIR
static void
ngx_http_tfs_check_exit_worker(ngx_cycle_t *cycle)
{
ngx_int_t i;
ngx_http_tfs_main_conf_t *tmcf;
ngx_http_tfs_tair_instance_t *dup_instance;
tmcf = ngx_http_cycle_get_module_main_conf(cycle, ngx_http_tfs_module);
if (tmcf == NULL) {
return;
}
/* destroy duplicate server */
for (i = 0; i < NGX_HTTP_TFS_MAX_CLUSTER_COUNT; i++) {
dup_instance = &tmcf->dup_instances[i];
if (dup_instance->server != NULL) {
ngx_http_etair_destory_server(dup_instance->server, (ngx_cycle_t *) ngx_cycle);
}
}
/* destroy remote block cache server */
if (tmcf->remote_block_cache_instance.server != NULL) {
ngx_http_etair_destory_server(tmcf->remote_block_cache_instance.server, (ngx_cycle_t *) ngx_cycle);
}
}
#endif