从零手写实现 nginx-15-nginx.conf 解析处置惩罚转换为 POJO ...

北冰洋以北 · 2024-6-10 15:28:49

前言

各人好，我是老马。很高兴碰到你。
我们为 java 开发者实现了 java 版本的 nginx

https://github.com/houbb/nginx4j

假如你想知道 servlet 怎样处置惩罚的，可以参考我的另一个项目：

手写从零实现浅易版 tomcat minicat

package com.github.houbb.nginx4j.config.load;
import com.github.houbb.heaven.util.lang.StringUtil;
import com.github.houbb.heaven.util.util.CollectionUtil;
import com.github.houbb.nginx4j.bs.NginxUserConfigBs;
import com.github.houbb.nginx4j.bs.NginxUserServerConfigBs;
import com.github.houbb.nginx4j.config.NginxUserConfig;
import com.github.houbb.nginx4j.config.NginxUserServerConfig;
import com.github.houbb.nginx4j.constant.NginxUserConfigDefaultConst;
import com.github.houbb.nginx4j.constant.NginxUserServerConfigDefaultConst;
import com.github.odiszapc.nginxparser.NgxBlock;
import com.github.odiszapc.nginxparser.NgxConfig;
import com.github.odiszapc.nginxparser.NgxEntry;
import com.github.odiszapc.nginxparser.NgxParam;
import java.io.IOException;
import java.util.List;
/**
* @since 0.13.0
*/
public class NginxUserConfigLoaderConfigFile extends AbstractNginxUserConfigLoader {
private final String filePath;
public NginxUserConfigLoaderConfigFile(String filePath) {
this.filePath = filePath;
}
protected void fillBasicInfo(final NginxUserConfigBs configBs,
final NgxConfig conf) {
// 基本信息
configBs.httpPid(getHttpPid(conf));
}
private String getHttpPid(final NgxConfig conf) {
// 基本信息
NgxParam pidParam = conf.findParam("pid");
if(pidParam != null) {
return pidParam.getValue();
}
return NginxUserConfigDefaultConst.HTTP_PID;
}
/**
* <pre>
* listen 80; # 监听80端口
* server_name example.com; # 服务器域名
*
* # 单独为这个 server 启用 sendfile
* sendfile on;
*
* # 静态文件的根目录
* root /usr/share/nginx/html; # 静态文件存放的根目录
* index index.html index.htm; # 默认首页
*
* # 如果需要为这个 server 单独配置 gzip，可以覆盖全局配置
* gzip on;
* gzip_disable "msie6";
* gzip_vary on;
* gzip_proxied any;
* gzip_comp_level 6;
* gzip_buffers 16 8k;
* gzip_http_version 1.1;
* gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;
*
* </pre>
* @param configBs 配置
* @param conf 文件信息
*/
protected void fillServerInfo(final NginxUserConfigBs configBs,
final NgxConfig conf) {
// 首先获取 block
List<NgxEntry> servers = conf.findAll(NgxConfig.BLOCK, "http", "server"); // 示例3
if(CollectionUtil.isNotEmpty(servers)) {
for (NgxEntry entry : servers) {
NginxUserServerConfigBs serverConfigBs = NginxUserServerConfigBs.newInstance();
NgxBlock serverBlock = (NgxBlock) entry;
String name = serverBlock.getName();
int httpServerPort = getHttpServerListen(conf, serverBlock);
String httpServerName = getHttpServerName(conf, serverBlock);
String httpServerRoot = getHttpServerRoot(conf, serverBlock);
List<String> httpIndexList = getHttpServerIndexList(conf, serverBlock);
// sendfile on;
String sendFile = getHttpServerSendFile(conf, serverBlock);
//gzip
String gzip = getHttpServerGzip(conf, serverBlock);
long gzipMinLen = getHttpServerGzipMinLen(conf, serverBlock);
List<String> gzipTypes = getHttpServerGzipTypes(conf, serverBlock);
serverConfigBs.httpServerName(httpServerName)
.httpServerListen(httpServerPort)
.httpServerRoot(httpServerRoot)
.httpServerIndexList(httpIndexList)
.sendFile(sendFile)
.gzip(gzip)
.gzipMinLength(gzipMinLen)
.gzipTypes(gzipTypes);
NginxUserServerConfig serverConfig = serverConfigBs.build();
configBs.addServerConfig(httpServerPort, httpServerName, serverConfig);
}
}
}
private List<String> getHttpServerGzipTypes(final NgxConfig conf, final NgxBlock serverBlock) {
// value
NgxParam param = serverBlock.findParam("gzip_types");
if(param != null) {
return StringUtil.splitToList(param.getValue(), " ");
}
return NginxUserServerConfigDefaultConst.gzipTypes;
}
private long getHttpServerGzipMinLen(final NgxConfig conf, final NgxBlock serverBlock) {
// value
NgxParam param = serverBlock.findParam("gzip_min_len");
if(param != null) {
return Long.valueOf(param.getValue());
}
return NginxUserServerConfigDefaultConst.gzipMinLength;
}
private String getHttpServerGzip(final NgxConfig conf, final NgxBlock serverBlock) {
// value
NgxParam param = serverBlock.findParam("gzip");
if(param != null) {
return param.getValue();
}
return NginxUserServerConfigDefaultConst.gzip;
}
private List<String> getHttpServerIndexList(final NgxConfig conf, final NgxBlock serverBlock) {
// value
NgxParam param = serverBlock.findParam("index");
if(param != null) {
return StringUtil.splitToList(param.getValue(), " ");
}
return NginxUserServerConfigDefaultConst.httpServerIndexList;
}
private String getHttpServerSendFile(final NgxConfig conf, final NgxBlock serverBlock) {
// value
NgxParam param = serverBlock.findParam("sendfile");
if(param != null) {
return param.getValue();
}
return NginxUserServerConfigDefaultConst.sendFile;
}
private String getHttpServerRoot(final NgxConfig conf, final NgxBlock serverBlock) {
// value
NgxParam param = serverBlock.findParam("root");
if(param != null) {
return param.getValue();
}
return NginxUserServerConfigDefaultConst.httpServerRoot;
}
private int getHttpServerListen(final NgxConfig conf, final NgxBlock serverBlock) {
// value
NgxParam listenParam = serverBlock.findParam("listen");
if(listenParam != null) {
String value = listenParam.getValue();
List<String> valueList = StringUtil.splitToList(value, " ");
return Integer.parseInt(valueList.get(0));
}
return NginxUserServerConfigDefaultConst.httpServerListen;
}
private String getHttpServerName(final NgxConfig conf, final NgxBlock serverBlock) {
// value
NgxParam param = serverBlock.findParam("server_name");
if(param != null) {
return param.getValue();
}
return NginxUserServerConfigDefaultConst.httpServerName;
}
@Override
protected NginxUserConfig doLoad() {
NgxConfig conf = null;
try {
NginxUserConfigBs configBs = NginxUserConfigBs.newInstance();
conf = NgxConfig.read(filePath);
//1. basic
fillBasicInfo(configBs, conf);
//2. server 信息
fillServerInfo(configBs, conf);
// 返回
return configBs.build();
} catch (IOException e) {
throw new RuntimeException(e);
}
}
}

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启动类

NginxUserConfig nginxUserConfig = NginxUserConfigLoaders.configFile("D:\\github\\nginx4j\\src\\main\\resources\\nginx.conf").load();
Nginx4jBs.newInstance()
.nginxUserConfig(nginxUserConfig)
.init()
.start();

复制代码

小结

整体而言 nginx.conf 的配置非常机动。另有很多特性必要持续优化支持。
比如默认的全局配置，单独的 server 配置重载。

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从零手写实现 nginx-15-nginx.conf 解析处置惩罚转换为 POJO ...

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