details: http://hg.nginx.org/nginx/rev/0bb747b2d7cb
branches:
changeset: 7072:0bb747b2d7cb
user: Roman Arutyunyan <arut@nginx.com>
date: Thu Jul 20 08:50:49 2017 +0300
description:
Mirror module.

diffstat:

auto/modules | 11 +
auto/options | 3 +
src/http/modules/ngx_http_mirror_module.c | 223 ++++++++++++++++++++++++++++++
3 files changed, 237 insertions(+), 0 deletions(-)

diffs (275 lines):

diff -r cce6936ed2f4 -r 0bb747b2d7cb auto/modules
--- a/auto/modules Thu Jul 20 15:51:11 2017 +0300
+++ b/auto/modules Thu Jul 20 08:50:49 2017 +0300
@@ -506,6 +506,17 @@ if [ $HTTP = YES ]; then
. auto/module
fi

+ if [ $HTTP_MIRROR = YES ]; then
+ ngx_module_name=ngx_http_mirror_module
+ ngx_module_incs=
+ ngx_module_deps=
+ ngx_module_srcs=src/http/modules/ngx_http_mirror_module.c
+ ngx_module_libs=
+ ngx_module_link=$HTTP_MIRROR
+
+ . auto/module
+ fi
+
if :; then
ngx_module_name=ngx_http_try_files_module
ngx_module_incs=
diff -r cce6936ed2f4 -r 0bb747b2d7cb auto/options
--- a/auto/options Thu Jul 20 15:51:11 2017 +0300
+++ b/auto/options Thu Jul 20 08:50:49 2017 +0300
@@ -70,6 +70,7 @@ HTTP_DAV=NO
HTTP_ACCESS=YES
HTTP_AUTH_BASIC=YES
HTTP_AUTH_REQUEST=NO
+HTTP_MIRROR=YES
HTTP_USERID=YES
HTTP_SLICE=NO
HTTP_AUTOINDEX=YES
@@ -249,6 +250,7 @@ do
--without-http_userid_module) HTTP_USERID=NO ;;
--without-http_access_module) HTTP_ACCESS=NO ;;
--without-http_auth_basic_module) HTTP_AUTH_BASIC=NO ;;
+ --without-http_mirror_module) HTTP_MIRROR=NO ;;
--without-http_autoindex_module) HTTP_AUTOINDEX=NO ;;
--without-http_status_module) HTTP_STATUS=NO ;;
--without-http_geo_module) HTTP_GEO=NO ;;
@@ -458,6 +460,7 @@ cat << END
--without-http_userid_module disable ngx_http_userid_module
--without-http_access_module disable ngx_http_access_module
--without-http_auth_basic_module disable ngx_http_auth_basic_module
+ --without-http_mirror_module disable ngx_http_mirror_module
--without-http_autoindex_module disable ngx_http_autoindex_module
--without-http_geo_module disable ngx_http_geo_module
--without-http_map_module disable ngx_http_map_module
diff -r cce6936ed2f4 -r 0bb747b2d7cb src/http/modules/ngx_http_mirror_module.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/http/modules/ngx_http_mirror_module.c Thu Jul 20 08:50:49 2017 +0300
@@ -0,0 +1,223 @@
+
+/*
+ * Copyright (C) Roman Arutyunyan
+ * Copyright (C) Nginx, Inc.
+ */
+
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+#include <ngx_http.h>
+
+
+typedef struct {
+ ngx_array_t *mirror;
+ ngx_flag_t request_body;
+} ngx_http_mirror_loc_conf_t;
+
+
+typedef struct {
+ ngx_int_t status;
+} ngx_http_mirror_ctx_t;
+
+
+static ngx_int_t ngx_http_mirror_handler(ngx_http_request_t *r);
+static void ngx_http_mirror_body_handler(ngx_http_request_t *r);
+static ngx_int_t ngx_http_mirror_handler_internal(ngx_http_request_t *r);
+static void *ngx_http_mirror_create_loc_conf(ngx_conf_t *cf);
+static char *ngx_http_mirror_merge_loc_conf(ngx_conf_t *cf, void *parent,
+ void *child);
+static ngx_int_t ngx_http_mirror_init(ngx_conf_t *cf);
+
+
+static ngx_command_t ngx_http_mirror_commands[] = {
+
+ { ngx_string("mirror"),
+ NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
+ ngx_conf_set_str_array_slot,
+ NGX_HTTP_LOC_CONF_OFFSET,
+ offsetof(ngx_http_mirror_loc_conf_t, mirror),
+ NULL },
+
+ { ngx_string("mirror_request_body"),
+ NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
+ ngx_conf_set_flag_slot,
+ NGX_HTTP_LOC_CONF_OFFSET,
+ offsetof(ngx_http_mirror_loc_conf_t, request_body),
+ NULL },
+
+ ngx_null_command
+};
+
+
+static ngx_http_module_t ngx_http_mirror_module_ctx = {
+ NULL, /* preconfiguration */
+ ngx_http_mirror_init, /* postconfiguration */
+
+ NULL, /* create main configuration */
+ NULL, /* init main configuration */
+
+ NULL, /* create server configuration */
+ NULL, /* merge server configuration */
+
+ ngx_http_mirror_create_loc_conf, /* create location configuration */
+ ngx_http_mirror_merge_loc_conf /* merge location configuration */
+};
+
+
+ngx_module_t ngx_http_mirror_module = {
+ NGX_MODULE_V1,
+ &ngx_http_mirror_module_ctx, /* module context */
+ ngx_http_mirror_commands, /* module directives */
+ NGX_HTTP_MODULE, /* module type */
+ NULL, /* init master */
+ NULL, /* init module */
+ NULL, /* init process */
+ NULL, /* init thread */
+ NULL, /* exit thread */
+ NULL, /* exit process */
+ NULL, /* exit master */
+ NGX_MODULE_V1_PADDING
+};
+
+
+static ngx_int_t
+ngx_http_mirror_handler(ngx_http_request_t *r)
+{
+ ngx_int_t rc;
+ ngx_http_mirror_ctx_t *ctx;
+ ngx_http_mirror_loc_conf_t *mlcf;
+
+ if (r != r->main) {
+ return NGX_DECLINED;
+ }
+
+ mlcf = ngx_http_get_module_loc_conf(r, ngx_http_mirror_module);
+
+ if (mlcf->mirror == NULL) {
+ return NGX_DECLINED;
+ }
+
+ ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "mirror handler");
+
+ if (mlcf->request_body) {
+ ctx = ngx_http_get_module_ctx(r, ngx_http_mirror_module);
+
+ if (ctx) {
+ return ctx->status;
+ }
+
+ ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_mirror_ctx_t));
+ if (ctx == NULL) {
+ return NGX_ERROR;
+ }
+
+ ctx->status = NGX_DONE;
+
+ ngx_http_set_ctx(r, ctx, ngx_http_mirror_module);
+
+ rc = ngx_http_read_client_request_body(r, ngx_http_mirror_body_handler);
+ if (rc >= NGX_HTTP_SPECIAL_RESPONSE) {
+ return rc;
+ }
+
+ ngx_http_finalize_request(r, NGX_DONE);
+ return NGX_DONE;
+ }
+
+ return ngx_http_mirror_handler_internal(r);
+}
+
+
+static void
+ngx_http_mirror_body_handler(ngx_http_request_t *r)
+{
+ ngx_http_mirror_ctx_t *ctx;
+
+ ctx = ngx_http_get_module_ctx(r, ngx_http_mirror_module);
+
+ ctx->status = ngx_http_mirror_handler_internal(r);
+
+ r->preserve_body = 1;
+
+ r->write_event_handler = ngx_http_core_run_phases;
+ ngx_http_core_run_phases(r);
+}
+
+
+static ngx_int_t
+ngx_http_mirror_handler_internal(ngx_http_request_t *r)
+{
+ ngx_str_t *name;
+ ngx_uint_t i;
+ ngx_http_request_t *sr;
+ ngx_http_mirror_loc_conf_t *mlcf;
+
+ mlcf = ngx_http_get_module_loc_conf(r, ngx_http_mirror_module);
+
+ name = mlcf->mirror->elts;
+
+ for (i = 0; i < mlcf->mirror->nelts; i++) {
+ if (ngx_http_subrequest(r, &name[i], &r->args, &sr, NULL,
+ NGX_HTTP_SUBREQUEST_BACKGROUND)
+ != NGX_OK)
+ {
+ return NGX_HTTP_INTERNAL_SERVER_ERROR;
+ }
+
+ sr->header_only = 1;
+ sr->method = r->method;
+ sr->method_name = r->method_name;
+ }
+
+ return NGX_DECLINED;
+}
+
+
+static void *
+ngx_http_mirror_create_loc_conf(ngx_conf_t *cf)
+{
+ ngx_http_mirror_loc_conf_t *mlcf;
+
+ mlcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_mirror_loc_conf_t));
+ if (mlcf == NULL) {
+ return NULL;
+ }
+
+ mlcf->mirror = NGX_CONF_UNSET_PTR;
+ mlcf->request_body = NGX_CONF_UNSET;
+
+ return mlcf;
+}
+
+
+static char *
+ngx_http_mirror_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
+{
+ ngx_http_mirror_loc_conf_t *prev = parent;
+ ngx_http_mirror_loc_conf_t *conf = child;
+
+ ngx_conf_merge_ptr_value(conf->mirror, prev->mirror, NULL);
+ ngx_conf_merge_value(conf->request_body, prev->request_body, 1);
+
+ return NGX_CONF_OK;
+}
+
+
+static ngx_int_t
+ngx_http_mirror_init(ngx_conf_t *cf)
+{
+ ngx_http_handler_pt *h;
+ ngx_http_core_main_conf_t *cmcf;
+
+ cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
+
+ h = ngx_array_push(&cmcf->phases[NGX_HTTP_PRECONTENT_PHASE].handlers);
+ if (h == NULL) {
+ return NGX_ERROR;
+ }
+
+ *h = ngx_http_mirror_handler;
+
+ return NGX_OK;
+}
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