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Slice filter.
Splits a request into subrequests, each providing a specific range of response. The variable "$slice_range" must be used to set subrequest range and proper cache key. The directive "slice" sets slice size. The following example splits requests into 1-megabyte cacheable subrequests. server { listen 8000; location / { slice 1m; proxy_cache cache; proxy_cache_key $uri$is_args$args$slice_range; proxy_set_header Range $slice_range; proxy_cache_valid 200 206 1h; proxy_pass http://127.0.0.1:9000; } }
This commit is contained in:
parent
1b478c50de
commit
8ba626ccd7
15
auto/modules
15
auto/modules
@ -73,6 +73,11 @@ if [ $HTTP_SSI = YES ]; then
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fi
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if [ $HTTP_SLICE = YES ]; then
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HTTP_POSTPONE=YES
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fi
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if [ $HTTP_ADDITION = YES ]; then
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HTTP_POSTPONE=YES
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fi
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@ -110,6 +115,7 @@ fi
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# ngx_http_copy_filter
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# ngx_http_range_body_filter
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# ngx_http_not_modified_filter
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# ngx_http_slice_filter
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HTTP_FILTER_MODULES="$HTTP_WRITE_FILTER_MODULE \
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$HTTP_HEADER_FILTER_MODULE \
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@ -179,6 +185,12 @@ if [ $HTTP_USERID = YES ]; then
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HTTP_SRCS="$HTTP_SRCS $HTTP_USERID_SRCS"
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fi
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if [ $HTTP_SLICE = YES ]; then
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HTTP_SRCS="$HTTP_SRCS $HTTP_SLICE_SRCS"
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else
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HTTP_SLICE_FILTER_MODULE=""
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fi
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if [ $HTTP_V2 = YES ]; then
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have=NGX_HTTP_V2 . auto/have
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@ -461,7 +473,8 @@ if [ $HTTP = YES ]; then
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$HTTP_AUX_FILTER_MODULES \
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$HTTP_COPY_FILTER_MODULE \
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$HTTP_RANGE_BODY_FILTER_MODULE \
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$HTTP_NOT_MODIFIED_FILTER_MODULE"
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$HTTP_NOT_MODIFIED_FILTER_MODULE \
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$HTTP_SLICE_FILTER_MODULE"
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NGX_ADDON_DEPS="$NGX_ADDON_DEPS \$(HTTP_DEPS)"
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fi
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@ -71,6 +71,7 @@ HTTP_ACCESS=YES
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HTTP_AUTH_BASIC=YES
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HTTP_AUTH_REQUEST=NO
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HTTP_USERID=YES
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HTTP_SLICE=NO
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HTTP_AUTOINDEX=YES
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HTTP_RANDOM_INDEX=NO
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HTTP_STATUS=NO
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@ -226,6 +227,7 @@ do
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--with-http_random_index_module) HTTP_RANDOM_INDEX=YES ;;
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--with-http_secure_link_module) HTTP_SECURE_LINK=YES ;;
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--with-http_degradation_module) HTTP_DEGRADATION=YES ;;
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--with-http_slice_module) HTTP_SLICE=YES ;;
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--without-http_charset_module) HTTP_CHARSET=NO ;;
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--without-http_gzip_module) HTTP_GZIP=NO ;;
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@ -394,6 +396,7 @@ cat << END
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--with-http_random_index_module enable ngx_http_random_index_module
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--with-http_secure_link_module enable ngx_http_secure_link_module
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--with-http_degradation_module enable ngx_http_degradation_module
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--with-http_slice_module enable ngx_http_slice_module
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--with-http_stub_status_module enable ngx_http_stub_status_module
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--without-http_charset_module disable ngx_http_charset_module
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@ -360,6 +360,10 @@ HTTP_USERID_FILTER_MODULE=ngx_http_userid_filter_module
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HTTP_USERID_SRCS=src/http/modules/ngx_http_userid_filter_module.c
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HTTP_SLICE_FILTER_MODULE=ngx_http_slice_filter_module
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HTTP_SLICE_SRCS=src/http/modules/ngx_http_slice_filter_module.c
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HTTP_REALIP_MODULE=ngx_http_realip_module
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HTTP_REALIP_SRCS=src/http/modules/ngx_http_realip_module.c
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@ -154,7 +154,7 @@ ngx_http_range_header_filter(ngx_http_request_t *r)
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if (r->http_version < NGX_HTTP_VERSION_10
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|| r->headers_out.status != NGX_HTTP_OK
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|| r != r->main
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|| (r != r->main && !r->subrequest_ranges)
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|| r->headers_out.content_length_n == -1
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|| !r->allow_ranges)
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{
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@ -222,6 +222,8 @@ parse:
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return NGX_ERROR;
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}
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ctx->offset = r->headers_out.content_offset;
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if (ngx_array_init(&ctx->ranges, r->pool, 1, sizeof(ngx_http_range_t))
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!= NGX_OK)
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{
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@ -274,9 +276,20 @@ ngx_http_range_parse(ngx_http_request_t *r, ngx_http_range_filter_ctx_t *ctx,
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ngx_uint_t ranges)
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{
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u_char *p;
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off_t start, end, size, content_length, cutoff, cutlim;
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off_t start, end, size, content_length, cutoff,
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cutlim;
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ngx_uint_t suffix;
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ngx_http_range_t *range;
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ngx_http_range_filter_ctx_t *mctx;
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if (r != r->main) {
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mctx = ngx_http_get_module_ctx(r->main,
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ngx_http_range_body_filter_module);
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if (mctx) {
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ctx->ranges = mctx->ranges;
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return NGX_OK;
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}
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}
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p = r->headers_in.range->value.data + 6;
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size = 0;
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@ -395,6 +408,10 @@ ngx_http_range_singlepart_header(ngx_http_request_t *r,
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ngx_table_elt_t *content_range;
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ngx_http_range_t *range;
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if (r != r->main) {
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return ngx_http_next_header_filter(r);
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}
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content_range = ngx_list_push(&r->headers_out.headers);
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if (content_range == NULL) {
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return NGX_ERROR;
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@ -422,6 +439,7 @@ ngx_http_range_singlepart_header(ngx_http_request_t *r,
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- content_range->value.data;
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r->headers_out.content_length_n = range->end - range->start;
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r->headers_out.content_offset = range->start;
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if (r->headers_out.content_length) {
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r->headers_out.content_length->hash = 0;
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521
src/http/modules/ngx_http_slice_filter_module.c
Normal file
521
src/http/modules/ngx_http_slice_filter_module.c
Normal file
@ -0,0 +1,521 @@
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/*
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* Copyright (C) Roman Arutyunyan
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* Copyright (C) Nginx, Inc.
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*/
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#include <ngx_config.h>
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#include <ngx_core.h>
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#include <ngx_http.h>
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typedef struct {
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size_t size;
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} ngx_http_slice_loc_conf_t;
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typedef struct {
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off_t start;
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off_t end;
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ngx_str_t range;
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ngx_str_t etag;
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ngx_uint_t last; /* unsigned last:1; */
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} ngx_http_slice_ctx_t;
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typedef struct {
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off_t start;
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off_t end;
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off_t complete_length;
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} ngx_http_slice_content_range_t;
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static ngx_int_t ngx_http_slice_header_filter(ngx_http_request_t *r);
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static ngx_int_t ngx_http_slice_body_filter(ngx_http_request_t *r,
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ngx_chain_t *in);
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static ngx_int_t ngx_http_slice_parse_content_range(ngx_http_request_t *r,
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ngx_http_slice_content_range_t *cr);
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static ngx_int_t ngx_http_slice_range_variable(ngx_http_request_t *r,
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ngx_http_variable_value_t *v, uintptr_t data);
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static off_t ngx_http_slice_get_start(ngx_http_request_t *r);
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static void *ngx_http_slice_create_loc_conf(ngx_conf_t *cf);
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static char *ngx_http_slice_merge_loc_conf(ngx_conf_t *cf, void *parent,
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void *child);
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static ngx_int_t ngx_http_slice_add_variables(ngx_conf_t *cf);
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static ngx_int_t ngx_http_slice_init(ngx_conf_t *cf);
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static ngx_command_t ngx_http_slice_filter_commands[] = {
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{ ngx_string("slice"),
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NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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ngx_conf_set_size_slot,
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NGX_HTTP_LOC_CONF_OFFSET,
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offsetof(ngx_http_slice_loc_conf_t, size),
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NULL },
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ngx_null_command
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};
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static ngx_http_module_t ngx_http_slice_filter_module_ctx = {
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ngx_http_slice_add_variables, /* preconfiguration */
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ngx_http_slice_init, /* postconfiguration */
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NULL, /* create main configuration */
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NULL, /* init main configuration */
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NULL, /* create server configuration */
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NULL, /* merge server configuration */
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ngx_http_slice_create_loc_conf, /* create location configuration */
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ngx_http_slice_merge_loc_conf /* merge location configuration */
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};
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ngx_module_t ngx_http_slice_filter_module = {
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NGX_MODULE_V1,
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&ngx_http_slice_filter_module_ctx, /* module context */
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ngx_http_slice_filter_commands, /* module directives */
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NGX_HTTP_MODULE, /* module type */
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NULL, /* init master */
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NULL, /* init module */
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NULL, /* init process */
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NULL, /* init thread */
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NULL, /* exit thread */
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NULL, /* exit process */
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NULL, /* exit master */
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NGX_MODULE_V1_PADDING
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};
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static ngx_str_t ngx_http_slice_range_name = ngx_string("slice_range");
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static ngx_http_output_header_filter_pt ngx_http_next_header_filter;
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static ngx_http_output_body_filter_pt ngx_http_next_body_filter;
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static ngx_int_t
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ngx_http_slice_header_filter(ngx_http_request_t *r)
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{
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off_t end;
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ngx_int_t rc;
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ngx_table_elt_t *h;
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ngx_http_slice_ctx_t *ctx;
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ngx_http_slice_loc_conf_t *slcf;
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ngx_http_slice_content_range_t cr;
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ctx = ngx_http_get_module_ctx(r, ngx_http_slice_filter_module);
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if (ctx == NULL) {
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return ngx_http_next_header_filter(r);
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}
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if (r->headers_out.status != NGX_HTTP_PARTIAL_CONTENT) {
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if (r == r->main) {
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ngx_http_set_ctx(r, NULL, ngx_http_slice_filter_module);
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return ngx_http_next_header_filter(r);
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}
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ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
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"unexpected status code %ui in slice response",
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r->headers_out.status);
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return NGX_ERROR;
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}
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h = r->headers_out.etag;
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if (ctx->etag.len) {
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if (h == NULL
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|| h->value.len != ctx->etag.len
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|| ngx_strncmp(h->value.data, ctx->etag.data, ctx->etag.len)
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!= 0)
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{
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ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
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"etag mismatch in slice response");
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return NGX_ERROR;
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}
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}
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if (h) {
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ctx->etag = h->value;
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}
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if (ngx_http_slice_parse_content_range(r, &cr) != NGX_OK) {
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ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
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"invalid range in slice response");
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return NGX_ERROR;
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}
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if (cr.complete_length == -1) {
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ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
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"no complete length in slice response");
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return NGX_ERROR;
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}
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ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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"http slice response range: %O-%O/%O",
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cr.start, cr.end, cr.complete_length);
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slcf = ngx_http_get_module_loc_conf(r, ngx_http_slice_filter_module);
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end = ngx_min(cr.start + (off_t) slcf->size, cr.complete_length);
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if (cr.start != ctx->start || cr.end != end) {
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ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
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"unexpected range in slice response: %O-%O",
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cr.start, cr.end);
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return NGX_ERROR;
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}
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ctx->start = end;
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r->headers_out.status = NGX_HTTP_OK;
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r->headers_out.status_line.len = 0;
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r->headers_out.content_length_n = cr.complete_length;
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r->headers_out.content_offset = cr.start;
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r->headers_out.content_range->hash = 0;
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r->headers_out.content_range = NULL;
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r->allow_ranges = 1;
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r->subrequest_ranges = 1;
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r->single_range = 1;
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rc = ngx_http_next_header_filter(r);
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if (r != r->main) {
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return rc;
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}
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if (r->headers_out.status == NGX_HTTP_PARTIAL_CONTENT) {
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if (ctx->start + (off_t) slcf->size <= r->headers_out.content_offset) {
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ctx->start = slcf->size
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* (r->headers_out.content_offset / slcf->size);
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}
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ctx->end = r->headers_out.content_offset
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+ r->headers_out.content_length_n;
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} else {
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ctx->end = cr.complete_length;
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}
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return rc;
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}
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static ngx_int_t
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ngx_http_slice_body_filter(ngx_http_request_t *r, ngx_chain_t *in)
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{
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ngx_int_t rc;
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ngx_chain_t *cl;
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ngx_http_request_t *sr;
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ngx_http_slice_ctx_t *ctx;
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ngx_http_slice_loc_conf_t *slcf;
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ctx = ngx_http_get_module_ctx(r, ngx_http_slice_filter_module);
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if (ctx == NULL || r != r->main) {
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return ngx_http_next_body_filter(r, in);
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}
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for (cl = in; cl; cl = cl->next) {
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if (cl->buf->last_buf) {
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cl->buf->last_buf = 0;
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cl->buf->sync = 1;
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ctx->last = 1;
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}
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}
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rc = ngx_http_next_body_filter(r, in);
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if (rc == NGX_ERROR || !ctx->last) {
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return rc;
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}
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if (ctx->start >= ctx->end) {
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ngx_http_set_ctx(r, NULL, ngx_http_slice_filter_module);
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ngx_http_send_special(r, NGX_HTTP_LAST);
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return rc;
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}
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if (ngx_http_subrequest(r, &r->uri, &r->args, &sr, NULL, 0) != NGX_OK) {
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return NGX_ERROR;
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}
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ngx_http_set_ctx(sr, ctx, ngx_http_slice_filter_module);
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slcf = ngx_http_get_module_loc_conf(r, ngx_http_slice_filter_module);
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ctx->range.len = ngx_sprintf(ctx->range.data, "bytes=%O-%O", ctx->start,
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ctx->start + (off_t) slcf->size - 1)
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- ctx->range.data;
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ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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"http slice subrequest: \"%V\"", &ctx->range);
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return rc;
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}
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static ngx_int_t
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ngx_http_slice_parse_content_range(ngx_http_request_t *r,
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ngx_http_slice_content_range_t *cr)
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{
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off_t start, end, complete_length, cutoff, cutlim;
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u_char *p;
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ngx_table_elt_t *h;
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h = r->headers_out.content_range;
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if (h == NULL
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|| h->value.len < 7
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|| ngx_strncmp(h->value.data, "bytes ", 6) != 0)
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{
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return NGX_ERROR;
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}
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p = h->value.data + 6;
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cutoff = NGX_MAX_OFF_T_VALUE / 10;
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cutlim = NGX_MAX_OFF_T_VALUE % 10;
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start = 0;
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end = 0;
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complete_length = 0;
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while (*p == ' ') { p++; }
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if (*p < '0' || *p > '9') {
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return NGX_ERROR;
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}
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while (*p >= '0' && *p <= '9') {
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if (start >= cutoff && (start > cutoff || *p - '0' > cutlim)) {
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return NGX_ERROR;
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}
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start = start * 10 + *p++ - '0';
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}
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while (*p == ' ') { p++; }
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if (*p++ != '-') {
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return NGX_ERROR;
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}
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while (*p == ' ') { p++; }
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|
||||
if (*p < '0' || *p > '9') {
|
||||
return NGX_ERROR;
|
||||
}
|
||||
|
||||
while (*p >= '0' && *p <= '9') {
|
||||
if (end >= cutoff && (end > cutoff || *p - '0' > cutlim)) {
|
||||
return NGX_ERROR;
|
||||
}
|
||||
|
||||
end = end * 10 + *p++ - '0';
|
||||
}
|
||||
|
||||
end++;
|
||||
|
||||
while (*p == ' ') { p++; }
|
||||
|
||||
if (*p++ != '/') {
|
||||
return NGX_ERROR;
|
||||
}
|
||||
|
||||
while (*p == ' ') { p++; }
|
||||
|
||||
if (*p != '*') {
|
||||
if (*p < '0' || *p > '9') {
|
||||
return NGX_ERROR;
|
||||
}
|
||||
|
||||
while (*p >= '0' && *p <= '9') {
|
||||
if (complete_length >= cutoff
|
||||
&& (complete_length > cutoff || *p - '0' > cutlim))
|
||||
{
|
||||
return NGX_ERROR;
|
||||
}
|
||||
|
||||
complete_length = complete_length * 10 + *p++ - '0';
|
||||
}
|
||||
|
||||
} else {
|
||||
complete_length = -1;
|
||||
p++;
|
||||
}
|
||||
|
||||
while (*p == ' ') { p++; }
|
||||
|
||||
if (*p != '\0') {
|
||||
return NGX_ERROR;
|
||||
}
|
||||
|
||||
cr->start = start;
|
||||
cr->end = end;
|
||||
cr->complete_length = complete_length;
|
||||
|
||||
return NGX_OK;
|
||||
}
|
||||
|
||||
|
||||
static ngx_int_t
|
||||
ngx_http_slice_range_variable(ngx_http_request_t *r,
|
||||
ngx_http_variable_value_t *v, uintptr_t data)
|
||||
{
|
||||
u_char *p;
|
||||
ngx_http_slice_ctx_t *ctx;
|
||||
ngx_http_slice_loc_conf_t *slcf;
|
||||
|
||||
ctx = ngx_http_get_module_ctx(r, ngx_http_slice_filter_module);
|
||||
|
||||
if (ctx == NULL) {
|
||||
if (r != r->main || r->headers_out.status) {
|
||||
v->not_found = 1;
|
||||
return NGX_OK;
|
||||
}
|
||||
|
||||
slcf = ngx_http_get_module_loc_conf(r, ngx_http_slice_filter_module);
|
||||
|
||||
if (slcf->size == 0) {
|
||||
v->not_found = 1;
|
||||
return NGX_OK;
|
||||
}
|
||||
|
||||
ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_slice_ctx_t));
|
||||
if (ctx == NULL) {
|
||||
return NGX_ERROR;
|
||||
}
|
||||
|
||||
ngx_http_set_ctx(r, ctx, ngx_http_slice_filter_module);
|
||||
|
||||
p = ngx_pnalloc(r->pool, sizeof("bytes=-") - 1 + 2 * NGX_OFF_T_LEN);
|
||||
if (p == NULL) {
|
||||
return NGX_ERROR;
|
||||
}
|
||||
|
||||
ctx->start = slcf->size * (ngx_http_slice_get_start(r) / slcf->size);
|
||||
|
||||
ctx->range.data = p;
|
||||
ctx->range.len = ngx_sprintf(p, "bytes=%O-%O", ctx->start,
|
||||
ctx->start + (off_t) slcf->size - 1)
|
||||
- p;
|
||||
}
|
||||
|
||||
v->data = ctx->range.data;
|
||||
v->valid = 1;
|
||||
v->not_found = 0;
|
||||
v->no_cacheable = 1;
|
||||
v->len = ctx->range.len;
|
||||
|
||||
return NGX_OK;
|
||||
}
|
||||
|
||||
|
||||
static off_t
|
||||
ngx_http_slice_get_start(ngx_http_request_t *r)
|
||||
{
|
||||
off_t start, cutoff, cutlim;
|
||||
u_char *p;
|
||||
ngx_table_elt_t *h;
|
||||
|
||||
if (r->headers_in.if_range) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
h = r->headers_in.range;
|
||||
|
||||
if (h == NULL
|
||||
|| h->value.len < 7
|
||||
|| ngx_strncasecmp(h->value.data, (u_char *) "bytes=", 6) != 0)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
p = h->value.data + 6;
|
||||
|
||||
if (ngx_strchr(p, ',')) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
while (*p == ' ') { p++; }
|
||||
|
||||
if (*p == '-') {
|
||||
return 0;
|
||||
}
|
||||
|
||||
cutoff = NGX_MAX_OFF_T_VALUE / 10;
|
||||
cutlim = NGX_MAX_OFF_T_VALUE % 10;
|
||||
|
||||
start = 0;
|
||||
|
||||
while (*p >= '0' && *p <= '9') {
|
||||
if (start >= cutoff && (start > cutoff || *p - '0' > cutlim)) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
start = start * 10 + *p++ - '0';
|
||||
}
|
||||
|
||||
return start;
|
||||
}
|
||||
|
||||
|
||||
static void *
|
||||
ngx_http_slice_create_loc_conf(ngx_conf_t *cf)
|
||||
{
|
||||
ngx_http_slice_loc_conf_t *slcf;
|
||||
|
||||
slcf = ngx_palloc(cf->pool, sizeof(ngx_http_slice_loc_conf_t));
|
||||
if (slcf == NULL) {
|
||||
return NULL;
|
||||
}
|
||||
|
||||
slcf->size = NGX_CONF_UNSET_SIZE;
|
||||
|
||||
return slcf;
|
||||
}
|
||||
|
||||
|
||||
static char *
|
||||
ngx_http_slice_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
|
||||
{
|
||||
ngx_http_slice_loc_conf_t *prev = parent;
|
||||
ngx_http_slice_loc_conf_t *conf = child;
|
||||
|
||||
ngx_conf_merge_size_value(conf->size, prev->size, 0);
|
||||
|
||||
return NGX_CONF_OK;
|
||||
}
|
||||
|
||||
|
||||
static ngx_int_t
|
||||
ngx_http_slice_add_variables(ngx_conf_t *cf)
|
||||
{
|
||||
ngx_http_variable_t *var;
|
||||
|
||||
var = ngx_http_add_variable(cf, &ngx_http_slice_range_name, 0);
|
||||
if (var == NULL) {
|
||||
return NGX_ERROR;
|
||||
}
|
||||
|
||||
var->get_handler = ngx_http_slice_range_variable;
|
||||
|
||||
return NGX_OK;
|
||||
}
|
||||
|
||||
|
||||
static ngx_int_t
|
||||
ngx_http_slice_init(ngx_conf_t *cf)
|
||||
{
|
||||
ngx_http_next_header_filter = ngx_http_top_header_filter;
|
||||
ngx_http_top_header_filter = ngx_http_slice_header_filter;
|
||||
|
||||
ngx_http_next_body_filter = ngx_http_top_body_filter;
|
||||
ngx_http_top_body_filter = ngx_http_slice_body_filter;
|
||||
|
||||
return NGX_OK;
|
||||
}
|
@ -271,6 +271,7 @@ typedef struct {
|
||||
ngx_array_t cache_control;
|
||||
|
||||
off_t content_length_n;
|
||||
off_t content_offset;
|
||||
time_t date_time;
|
||||
time_t last_modified_time;
|
||||
} ngx_http_headers_out_t;
|
||||
@ -530,6 +531,7 @@ struct ngx_http_request_s {
|
||||
unsigned filter_need_in_memory:1;
|
||||
unsigned filter_need_temporary:1;
|
||||
unsigned allow_ranges:1;
|
||||
unsigned subrequest_ranges:1;
|
||||
unsigned single_range:1;
|
||||
unsigned disable_not_modified:1;
|
||||
|
||||
|
Loading…
Reference in New Issue
Block a user