#
# Copyright (C) 2016 ZTE, Inc. and others. All rights reserved. (ZTE)
#
# Licensed 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.
#

#the maximum allowed size of the client request body,current 10G
client_max_body_size 10240m; 
client_body_buffer_size 128k;
	
#set conf for proxy pass
proxy_connect_timeout 10s;
proxy_read_timeout 120s;
proxy_send_timeout 120s;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Host $host:$server_port;
proxy_buffers 4 16k;

#set the nginx_cache parameter
proxy_cache_path  temp/proxy_cache  levels=1:2   keys_zone=nginx_cache:100m inactive=1d max_size=1g;
proxy_cache_key $host$uri$is_args$args;
proxy_cache_revalidate on;
proxy_cache_min_uses 3;
proxy_cache_use_stale error timeout updating http_500 http_502 http_503 http_504;
proxy_cache_lock on;

# Lua settings
lua_package_path "$prefix/../lualib/?.lua;$prefix/luaext/?.lua;;";
lua_package_cpath "$prefix/../lualib/?.so;;";
lua_shared_dict rr_cache 1M;
lua_shared_dict rr_locks 100k;

lua_shared_dict svc_cache 5M;
lua_shared_dict locks 200k;

lua_code_cache on;

# Basic reverse proxy server processor
upstream defaultbackend {
	server 0.0.0.1;
	balancer_by_lua_file luaext/loadbalance/balancer.lua;
	#keepalive 10;
}

server {
	listen 10080;
	default_type text/html;
	
	# the flag identify whether to check doing internal redirect or not
	set $websocket_internal_redirect "on";
	
	location = /msb {
		#try_files $uri @defaulthomepage;
		rewrite ^ /iui/microservices/default.html redirect;
	}
	
	location = /iui/microservices {
		try_files $uri @addslash;
	}

	location @addslash {
		return 302 $scheme://$http_host$uri/;
	}
	
	location @defaulthomepage {
		return 302 $scheme://$http_host/iui/microservices/default.html;
	}
	
	error_page 410 = @commonnotfound;
	
	location @commonnotfound {
		set $svc_type "custom";
		set $svc_name "";
		set $svc_url "";
		set $backend "defaultbackend";
		
		#rewrite by the lua file
		rewrite_by_lua_file luaext/rewrite/customrewrite.lua;
		#log by the lua file
		log_by_lua_file luaext/log/logger.lua;
		
		proxy_pass http://$backend;
		proxy_redirect http://$host:$server_port$svc_url http://$host:$server_port$svc_name;  
	}
	
	location @customwebsocket {
		set $websocket_internal_redirect "off";
		#set header for websocket
		proxy_http_version 1.1;
		proxy_set_header Upgrade $http_upgrade;
		proxy_set_header Connection "Upgrade";
		
		proxy_set_header X-Real-IP $remote_addr;
		proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
		proxy_set_header Host $host:$server_port;
		
		#rewrite by the lua file
		rewrite_by_lua_file luaext/rewrite/customrewrite.lua;
		#log by the lua file
		log_by_lua_file luaext/log/logger.lua;
		
		proxy_pass http://$backend;  
	}
	
	location @commonwebsocket {
		set $websocket_internal_redirect "off";
		#set header for websocket
		proxy_http_version 1.1;
		proxy_set_header Upgrade $http_upgrade;
		proxy_set_header Connection "Upgrade";
		
		proxy_set_header X-Real-IP $remote_addr;
		proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
		proxy_set_header Host $host:$server_port;
		
		#rewrite by the lua file
		rewrite_by_lua_file luaext/rewrite/commonrewrite.lua;
		#log by the lua file
		log_by_lua_file luaext/log/logger.lua;
		
		proxy_pass http://$backend;  
	}
	
	location / {
		set $svc_type "custom";
		set $svc_name "";
		set $svc_url "";
		set $backend "defaultbackend";
		
		#rewrite by the lua file
		rewrite_by_lua_file luaext/rewrite/customrewrite.lua;
		#log by the lua file
		log_by_lua_file luaext/log/logger.lua;
		
		proxy_pass http://$backend;
		proxy_redirect http://$host:$server_port$svc_url http://$host:$server_port$svc_name;  
	}

	location ~ ^/(api|admin|apijson)(/[Vv]\d+(?:\.\d+)*)?/([^/]+)(/[Vv]\d+(?:\.\d+)*)?(.*) {
		set $svc_type $1;
		set $svc_name $3;
		set $svc_version1 $2;
		set $svc_version2 $4;
		set $req_res $5;
		set $backend "defaultbackend";
		
		#rewrite by the lua file
		rewrite_by_lua_file luaext/rewrite/commonrewrite.lua;
		#log by the lua file
		log_by_lua_file luaext/log/logger.lua;
		
		proxy_pass http://$backend;
	}
	
	location ~* ^/iui/([^/]+)(.*)\.(png|jpg|jpeg|gif|ico|bmp|woff)$ {
		set $svc_type "iui";
		set $svc_name $1;
		set $req_res $2.$3;
		set $backend "defaultbackend";
		
		#rewrite by the lua file
		rewrite_by_lua_file luaext/rewrite/commonrewrite.lua;
		#log by the lua file
		log_by_lua_file luaext/log/logger.lua;
		
		proxy_cache nginx_cache;
		add_header X-Cache-Status $upstream_cache_status;
		proxy_pass http://$backend;
	}
	
	location ~ ^/iui/([^/]+)(.*) {
		set $svc_type "iui";
		set $svc_name $1;
		set $req_res $2;
		set $backend "defaultbackend";
		
		#rewrite by the lua file
		rewrite_by_lua_file luaext/rewrite/commonrewrite.lua;
		#log by the lua file
		log_by_lua_file luaext/log/logger.lua;
		
		proxy_pass http://$backend;
	}
	
	location ~* \.(?:png|jpg|jpeg|gif|ico|bmp|woff)$ {
		set $svc_type "custom";
		set $svc_name "";
		set $svc_url "";
		set $backend "defaultbackend";
		
		#rewrite by the lua file
		rewrite_by_lua_file luaext/rewrite/customrewrite.lua;
		#log by the lua file
		log_by_lua_file luaext/log/logger.lua;
		
		proxy_cache nginx_cache;
		add_header X-Cache-Status $upstream_cache_status;
		proxy_pass http://$backend;
		proxy_redirect http://$host:$server_port$svc_url http://$host:$server_port$svc_name;  
	}
	
	location = /favicon.ico {
		log_not_found off;
	}
	include ../msb-enabled/location-ext/*.conf;
	include ../msb-enabled/location-ext-mount/*.conf;
}