Nginx 判断header中的value进行版本分离
当前有一个需求是为了平滑升级,需要老版本和新版本API共存,最简单的方法是从nginx上下手,建立两套代理机制。
大致来说就是使用nginx的map来进行头部数据的提取并转化为变量,然后在location中判断并使用rewrite。
nginx中if语句存在极大的不确定性,一定要仔细测试
if和后面括号以及变量等号这些元素都要有空格
map代码
map $http_xiaocan $ver{
default 3;
2 2;
3 3;
}
location中判断
location / {
if ($ver == 2) {
rewrite ^(.*)$ http://www.xiaocan.me
}
if ($ver == 3) {
rewrite ^(.*)$ http://www.baidu.com
}
}
完整代码
# For more information on configuration, see:
# * Official English Documentation: http://nginx.org/en/docs/
# * Official Russian Documentation: http://nginx.org/ru/docs/
user nginx;
worker_processes auto;
error_log /var/log/nginx/error.log;
pid /var/run/nginx.pid;
# Load dynamic modules. See /usr/share/nginx/README.dynamic.
include /usr/share/nginx/modules/*.conf;
events {
worker_connections 1024;
}
http {
map $http_xiaocan $ver{
default 3;
2 2;
3 3;
}
log_format main '$remote_addr - $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for"';
access_log /var/log/nginx/access.log main;
sendfile on;
tcp_nopush on;
tcp_nodelay on;
keepalive_timeout 65;
types_hash_max_size 2048;
include /etc/nginx/mime.types;
default_type application/octet-stream;
# Load modular configuration files from the /etc/nginx/conf.d directory.
# See http://nginx.org/en/docs/ngx_core_module.html#include
# for more information.
include /etc/nginx/conf.d/*.conf;
server_names_hash_bucket_size 128;
server {
server_name test.rdev www.test.rdev;
listen 192.74.244.97;
root /home/test/public_html;
index index.html index.htm index.php;
access_log /var/log/virtualmin/test.rdev_access_log;
error_log /var/log/virtualmin/test.rdev_error_log;
fastcgi_param GATEWAY_INTERFACE CGI/1.1;
fastcgi_param SERVER_SOFTWARE nginx;
fastcgi_param QUERY_STRING $query_string;
fastcgi_param REQUEST_METHOD $request_method;
fastcgi_param CONTENT_TYPE $content_type;
fastcgi_param CONTENT_LENGTH $content_length;
fastcgi_param SCRIPT_FILENAME /home/test/public_html$fastcgi_script_name;
fastcgi_param SCRIPT_NAME $fastcgi_script_name;
fastcgi_param REQUEST_URI $request_uri;
fastcgi_param DOCUMENT_URI $document_uri;
fastcgi_param DOCUMENT_ROOT /home/test/public_html;
fastcgi_param SERVER_PROTOCOL $server_protocol;
fastcgi_param REMOTE_ADDR $remote_addr;
fastcgi_param REMOTE_PORT $remote_port;
fastcgi_param SERVER_ADDR $server_addr;
fastcgi_param SERVER_PORT $server_port;
fastcgi_param SERVER_NAME $server_name;
fastcgi_param HTTPS $https;
location / {
if ($ver == 2) {
rewrite ^(.*)$ http://www.xiaocan.me
}
if ($ver == 3) {
rewrite ^(.*)$ http://www.baidu.com
}
}
location ~ \.php$ {
try_files $uri =404;
fastcgi_pass unix:/var/php-nginx/14770418441345.sock/socket;
}
listen 192.74.244.97:443 ssl;
ssl_certificate /home/test/ssl.cert;
ssl_certificate_key /home/test/ssl.key;
}
}