fix: loki push 代理接口修改

1、loki push 代理接口接收到数据立即返回 204，并存放到有界队列
2、每个推送接口启动一个 线程推送 到 目标loki push 接口
3、新增 httpclient ，开启client 连接池

10 files changed, 641 insertions, 415 deletions

diff --git a/src/main/java/net/geedge/confagent/ConfagentApplication.java b/src/main/java/net/geedge/confagent/ConfagentApplication.java
index ff8758e..c8869f5 100644
--- a/src/main/java/net/geedge/confagent/ConfagentApplication.java
+++ b/src/main/java/net/geedge/confagent/ConfagentApplication.java
@@ -1,35 +1,22 @@
 package net.geedge.confagent;
 
-import cn.hutool.core.io.FileUtil;
-import cn.hutool.core.util.StrUtil;
-import cn.hutool.log.Log;
-import net.geedge.confagent.util.ConfagentUtil;
-import net.geedge.confagent.util.Tool;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 
-import java.io.File;
-import java.io.IOException;
-import java.util.Properties;
+import cn.hutool.extra.spring.EnableSpringUtil;
+import cn.hutool.log.Log;
+import net.geedge.confagent.util.Tool;
 
+@EnableSpringUtil
 @SpringBootApplication
 public class ConfagentApplication {
 
 	private final static Log log = Log.get();
-
+	
 	public static void main(String[] args) {
+		log.debug("application start,args: {}",Tool.StrUtil.join(",", args));
 		SpringApplication.run(ConfagentApplication.class, args);
-		try {
-			Properties properties = new Properties();
-			File configFile = Tool.FileUtil.file(Tool.WebPathUtil.getRootPath(), "config/application.yml");
-			properties.load(FileUtil.getInputStream(configFile));
-			String tokenPath = (String) properties.get("tokenFile");
-			File tokenFile = Tool.FileUtil.file(Tool.WebPathUtil.getRootPath(), StrUtil.emptyToDefault(tokenPath, "config/token.auth"));
-			String token = Tool.FileUtil.readString(tokenFile, Tool.CharsetUtil.UTF_8);
-			ConfagentUtil.tokenInMemory = token;
-		} catch (IOException e) {
-			log.error(e);
-		}
+		
 	}
 
 }
diff --git a/src/main/java/net/geedge/confagent/config/InitAgent.java b/src/main/java/net/geedge/confagent/config/InitAgent.java
new file mode 100644
index 0000000..f1ceb37
--- /dev/null
+++ b/src/main/java/net/geedge/confagent/config/InitAgent.java
@@ -0,0 +1,50 @@
+package net.geedge.confagent.config;
+
+import java.io.File;
+
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.ApplicationListener;
+import org.springframework.context.event.ContextRefreshedEvent;
+import org.springframework.stereotype.Component;
+
+import cn.hutool.log.Log;
+import net.geedge.confagent.entity.LokiPushUrlsEntity;
+import net.geedge.confagent.thread.LokiContext;
+import net.geedge.confagent.util.ConfagentUtil;
+import net.geedge.confagent.util.Tool;
+
+@Component
+public class InitAgent implements ApplicationListener<ContextRefreshedEvent> {
+	private final static Log log = Log.get();
+
+	@Value("${confagent.tokenFile:config/token.auth}")
+	private String tokenFilePath;
+
+	@Value("${confagent.lokiPushUrlsFile:config/lokiPushUrls.yml}")
+	private String lokiPushUrlsPath;
+
+	@Override
+	public void onApplicationEvent(ContextRefreshedEvent event) {
+		if (event.getApplicationContext().getParent() == null) {
+			// 加载 token
+			try {
+				File tokenFile = Tool.FileUtil.file(Tool.WebPathUtil.getRootPath(), tokenFilePath);
+				String token = Tool.FileUtil.readString(tokenFile, Tool.CharsetUtil.UTF_8);
+				ConfagentUtil.tokenInMemory = token;
+			} catch (Exception e) {
+				log.error("load token error", e);
+			}
+			// 加载 loki push url
+			try {
+				File lokiFile = Tool.FileUtil.file(Tool.WebPathUtil.getRootPath(), lokiPushUrlsPath);
+				LokiPushUrlsEntity urlsEntity = Tool.YamlUtil.readAsLokiPushUrlsEntity(lokiFile.getAbsolutePath());
+				if (urlsEntity != null && urlsEntity.getLokiPushUrls() != null) {
+					LokiContext.loadUrls(urlsEntity.getLokiPushUrls());
+				}
+			} catch (Exception e) {
+				log.error("load loki push url error", e);
+			}
+		}
+
+	}
+}
\ No newline at end of file
diff --git a/src/main/java/net/geedge/confagent/config/RestTemplateConfig.java b/src/main/java/net/geedge/confagent/config/RestTemplateConfig.java
new file mode 100644
index 0000000..899af73
--- /dev/null
+++ b/src/main/java/net/geedge/confagent/config/RestTemplateConfig.java
@@ -0,0 +1,122 @@
+package net.geedge.confagent.config;
+
+import org.apache.http.HeaderElement;
+import org.apache.http.HeaderElementIterator;
+import org.apache.http.HttpResponse;
+import org.apache.http.client.HttpClient;
+import org.apache.http.client.config.RequestConfig;
+import org.apache.http.config.Registry;
+import org.apache.http.config.RegistryBuilder;
+import org.apache.http.conn.ConnectionKeepAliveStrategy;
+import org.apache.http.conn.socket.ConnectionSocketFactory;
+import org.apache.http.conn.socket.PlainConnectionSocketFactory;
+import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
+import org.apache.http.impl.client.HttpClientBuilder;
+import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
+import org.apache.http.message.BasicHeaderElementIterator;
+import org.apache.http.protocol.HTTP;
+import org.apache.http.protocol.HttpContext;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.http.client.ClientHttpRequestFactory;
+import org.springframework.http.client.HttpComponentsClientHttpRequestFactory;
+import org.springframework.web.client.RestTemplate;
+
+/**
+ * Http resttemplate 配置
+ **/
+@Configuration
+public class RestTemplateConfig {
+	/**
+	 * # 从连接池获取连接的timeout,不宜过大,ms
+	 */
+	@Value("${http-pool.connection-request-timeout:200}")
+	private int connectionRequestTimeout;
+	/**
+	 * 指客户端和服务器建立连接的超时时间,ms , 最大约21秒,因为内部tcp在进行三次握手建立连接时,默认tcp超时时间是20秒
+	 */
+	@Value("${http-pool.connection-timeout:1000}")
+	private int connectionTimeout;
+	/**
+	 * 指客户端从服务器读取数据包的间隔超时时间,不是总读取时间,也就是socket timeout,ms
+	 */
+	@Value("${http-pool.socket-timeout:500}")
+	private int socketTimeout;
+	/**
+	 * #每个路由的最大连接数,如果只调用一个地址,可以将其设置为最大连接数
+	 */
+	@Value("${http-pool.max-per-route:10000}")
+	private int maxPerRoute;
+	/**
+	 * #连接池的最大连接数，0代表不限；如果取0，需要考虑连接泄露导致系统崩溃的后果
+	 */
+	@Value("${http-pool.max-total:1000}")
+	private int maxTotal;
+
+	/**
+	 * 长连接保持时间 单位s,不宜过长
+	 */
+	@Value("${http-pool.keep-alive-time:60}")
+	private int keepAliveTime;
+
+	@Bean
+	public RestTemplate restTemplate(ClientHttpRequestFactory factory) {
+		return new RestTemplate(factory);
+	}
+
+	@Bean
+	public ClientHttpRequestFactory httpRequestFactory(HttpClient client) {
+		return new HttpComponentsClientHttpRequestFactory(client);
+	}
+
+	@Bean
+	public HttpClient httpClient(ConnectionKeepAliveStrategy keepAliveStrategy) {
+		Registry<ConnectionSocketFactory> registry = RegistryBuilder.<ConnectionSocketFactory>create()
+				.register("http", PlainConnectionSocketFactory.getSocketFactory())
+				.register("https", SSLConnectionSocketFactory.getSocketFactory()).build();
+		PoolingHttpClientConnectionManager connectionManager = new PoolingHttpClientConnectionManager(registry);
+		// 设置整个连接池最大连接数 根据自己的场景决定
+		connectionManager.setMaxTotal(maxTotal);
+		// 路由是对maxTotal的细分
+		connectionManager.setDefaultMaxPerRoute(maxPerRoute);
+		RequestConfig requestConfig = RequestConfig.custom().setSocketTimeout(socketTimeout)// 服务器返回数据(response)的时间，超过该时间抛出readtimeout
+				.setConnectTimeout(connectionTimeout)// 连接上服务器(握手成功)的时间，超出该时间抛出connect timeout
+				.setConnectionRequestTimeout(connectionRequestTimeout)// 从连接池中获取连接的超时时间，超过该时间未拿到可用连接，会抛出org.apache.http.conn.ConnectionPoolTimeoutException:Timeout
+																		// waiting for connection from pool
+				.build();
+		return HttpClientBuilder.create()
+				.setDefaultRequestConfig(requestConfig)
+				.setConnectionManager(connectionManager)
+				.setKeepAliveStrategy(keepAliveStrategy)
+				.build();
+	}
+
+	/**
+	 * 配置长连接保持策略
+	 * 
+	 * @return
+	 */
+	@Bean
+	public ConnectionKeepAliveStrategy connectionKeepAliveStrategy() {
+		return new ConnectionKeepAliveStrategy() {
+			@Override
+			public long getKeepAliveDuration(HttpResponse response, HttpContext context) {
+				// Honor 'keep-alive' header
+				HeaderElementIterator it = new BasicHeaderElementIterator(response.headerIterator(HTTP.CONN_KEEP_ALIVE));
+				while (it.hasNext()) {
+					HeaderElement he = it.nextElement();
+					String param = he.getName();
+					String value = he.getValue();
+					if (value != null && "timeout".equalsIgnoreCase(param)) {
+						try {
+							return Long.parseLong(value) * 1000;
+						} catch (NumberFormatException ignore) {
+						}
+					}
+				}
+				return keepAliveTime*1000;
+			}
+		};
+	}
+}
diff --git a/src/main/java/net/geedge/confagent/controller/ConfigController.java b/src/main/java/net/geedge/confagent/controller/ConfigController.java
index 6dde0bc..7b94125 100644
--- a/src/main/java/net/geedge/confagent/controller/ConfigController.java
+++ b/src/main/java/net/geedge/confagent/controller/ConfigController.java
@@ -1,26 +1,32 @@
 package net.geedge.confagent.controller;
 
+import java.io.File;
+import java.util.List;
+import java.util.Map;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import com.alibaba.fastjson.JSONObject;
+
 import cn.hutool.core.util.StrUtil;
 import cn.hutool.log.Log;
-import com.alibaba.fastjson.JSONObject;
 import net.geedge.confagent.entity.LokiPushUrlEntity;
 import net.geedge.confagent.entity.LokiPushUrlsEntity;
+import net.geedge.confagent.thread.LokiContext;
 import net.geedge.confagent.util.ConfagentUtil;
 import net.geedge.confagent.util.R;
 import net.geedge.confagent.util.RCode;
 import net.geedge.confagent.util.Tool;
 import net.geedge.confagent.util.Tool.YamlUtil;
 
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.beans.factory.annotation.Value;
-import org.springframework.web.bind.annotation.*;
-
-import javax.servlet.http.HttpServletRequest;
-import javax.servlet.http.HttpServletResponse;
-
-import java.io.File;
-import java.util.*;
-
 @RestController
 @RequestMapping("/config")
 public class ConfigController extends BaseController{
@@ -35,6 +41,7 @@ public class ConfigController extends BaseController{
     @Value("${confagent.loki.config}")
     private String lokiConfPath;
 
+    
     @Autowired
     private ConfagentUtil confagentUtil;
 
@@ -46,19 +53,20 @@ public class ConfigController extends BaseController{
     * @Author  han
     * @Date   2021/8/3
     */
+    @SuppressWarnings("unchecked")
     @PostMapping
     public R overwriteConfig(HttpServletRequest request, HttpServletResponse response,@RequestBody LokiPushUrlsEntity lokiPushUrls){
 
+    	List<LokiPushUrlEntity> lokiPushUrlList = Tool.ListUtil.list(false);
     	//进行验证：target和token均非空
     	if(lokiPushUrls!=null && lokiPushUrls.getLokiPushUrls()!=null) {
             int lokiPort = 13100;
             Map<String, Object> lokiMap = Tool.YamlUtil.readAsMap(lokiConfPath);
-            Map<String, Object> serverObj = (Map<String, Object>) lokiMap.get("server");
+			Map<String, Object> serverObj = (Map<String, Object>) lokiMap.get("server");
             if (serverObj != null) {
                 lokiPort = (Integer) serverObj.get("http_listen_port");
             }
-
-    		List<LokiPushUrlEntity> lokiPushUrlList = lokiPushUrls.getLokiPushUrls();
+            lokiPushUrlList.addAll(lokiPushUrls.getLokiPushUrls());
     		for(LokiPushUrlEntity urlEntity:lokiPushUrlList) {
     			if(!validLokiPushUrl(urlEntity)) {
     				return R.error(RCode.LOKI_PUSH_URL_ISNULL);
@@ -70,10 +78,17 @@ public class ConfigController extends BaseController{
                 }
     		}
     	}
-    	
+    	/*
+    	 *更新 urls ，并重启线程
+    	 */
+    	LokiContext.loadUrls(lokiPushUrlList);
+    	/*
+    	 * 写入到配置文件
+    	 */
     	File lf = Tool.FileUtil.file(rootPath, lokiFile);
     	YamlUtil.writeAsObject(lokiPushUrls, lf.getAbsolutePath());
         LOKI_PUSH_URL_JSONSTR = JSONObject.toJSONString(lokiPushUrls);
+        log.info("config update success");
         return R.ok();
     }
     
diff --git a/src/main/java/net/geedge/confagent/controller/LokiController.java b/src/main/java/net/geedge/confagent/controller/LokiController.java
index b4ea551..31f41af 100644
--- a/src/main/java/net/geedge/confagent/controller/LokiController.java
+++ b/src/main/java/net/geedge/confagent/controller/LokiController.java
@@ -1,291 +1,248 @@
 package net.geedge.confagent.controller;
 
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.net.HttpURLConnection;
+import java.nio.charset.Charset;
+import java.util.Enumeration;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import javax.servlet.ServletInputStream;
+import javax.servlet.ServletOutputStream;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.http.HttpEntity;
+import org.springframework.http.HttpHeaders;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import cn.hutool.core.io.IORuntimeException;
 import cn.hutool.core.net.url.UrlBuilder;
 import cn.hutool.core.util.ReflectUtil;
-import cn.hutool.core.util.StrUtil;
 import cn.hutool.http.HttpConnection;
 import cn.hutool.log.Log;
-import com.alibaba.fastjson.JSONObject;
 import net.geedge.confagent.annotation.UnCheckToken;
-import net.geedge.confagent.entity.LokiPushUrlEntity;
-import net.geedge.confagent.entity.LokiPushUrlsEntity;
-import net.geedge.confagent.thread.RequestThread;
+import net.geedge.confagent.thread.LokiPushThread;
 import net.geedge.confagent.util.ConfagentUtil;
 import net.geedge.confagent.util.R;
 import net.geedge.confagent.util.RCode;
 import net.geedge.confagent.util.Tool;
-import net.geedge.confagent.util.Tool.YamlUtil;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.beans.factory.annotation.Value;
-import org.springframework.web.bind.annotation.*;
-
-import javax.servlet.ServletInputStream;
-import javax.servlet.ServletOutputStream;
-import javax.servlet.http.HttpServletRequest;
-import javax.servlet.http.HttpServletResponse;
-import java.io.File;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-import java.net.HttpURLConnection;
-import java.nio.charset.Charset;
-import java.util.*;
-import java.util.concurrent.Future;
-import java.util.concurrent.TimeUnit;
 
 @RestController
 @RequestMapping("/loki")
-public class LokiController extends BaseController{
-    private final static Log log = Log.get();
+public class LokiController extends BaseController {
+	private final static Log log = Log.get();
 
-    @Autowired
+	@Autowired
 	private ConfagentUtil confagentUtil;
-    
-    @Value("${confagent.loki.config}")
-    private String lokiConfPath;
-    
-    @Value("${confagent.loki.query.auth:true}")
-    private Boolean queryAuth;
-
-    private final String[] QUERY_API_SUFFIX = {"query","query_range","series","labels","values"};
 
-    @Value("${confagent.loki.startCmd:systemctl start loki.service}")
-    private String startCmd;
-    
-    @Value("${confagent.loki.stopCmd:systemctl stop loki.service}")
-    private String stopCmd;
-    
-    @Value("${confagent.lokiPushUrlsFile:lokiPushUrls.yml}")
-    private String lokiFile;
-    
-    private static String rootPath = Tool.WebPathUtil.getRootPath();
-    
-    /**
-    * @Description 写入loki配置文件
-    * @Author  han
-    * @Date   2021/8/4
-    */
-    @PostMapping("/config")
-    public R overwriteConfig( @RequestBody Map<String,Object> configs){
+	@Value("${confagent.loki.config}")
+	private String lokiConfPath;
 
-        Map<String,Object> lokiConf =(Map<String,Object>) configs.get("config");
+	@Value("${confagent.loki.query.auth:true}")
+	private Boolean queryAuth;
 
-        if(!Tool.MapUtil.isEmpty(lokiConf)){
-            log.info("write loki conf:{}", Tool.JSONUtil.toJsonStr(lokiConf));
-            Tool.YamlUtil.writeAsMap(lokiConf,lokiConfPath);
-            if(Tool.StrUtil.isNotBlank(stopCmd)) {
-            	log.info("stop loki:"+stopCmd);
-            	try {
-            		Tool.RuntimeUtil.exec(stopCmd);
-            	}catch(Exception e) {
-            		log.error(e);
-            		return R.error(RCode.STOP_CMD_ERROR);
-            	}
-            	log.info("stop loki:"+stopCmd+"  end");
-            }
-            Tool.ThreadUtil.sleep(1000);
-            if(Tool.StrUtil.isNotBlank(startCmd)) {
-            	log.info("start loki:"+startCmd);
-            	try {
-//                	String[] b={"sh","-c",startCmd};
-//                	Tool.RuntimeUtil.exec(b);
-                	Tool.RuntimeUtil.exec(startCmd);
-            	}catch(Exception e) {
-            		log.error(e);
-            		return R.error(RCode.START_CMD_ERROR);
-            	}
-            	log.info("start loki:"+startCmd+"  end");
-            }
-        }else {
-        	return R.error(RCode.LOKI_CONFIG_ISNULL);
-        }
-
-        return R.ok();
-    }
-    
-    /**
-     * @Description 获取loki相关配置
-     * @Author  han
-     * @Date   2021/8/4
-     */
-     @GetMapping("/config")
-     public R queryConfig(HttpServletRequest request){
+	private final String[] QUERY_API_SUFFIX = { "query", "query_range", "series", "labels", "values" };
 
-         Map<String,Object> lokiConf = Tool.YamlUtil.readAsMap(lokiConfPath);
-         
-         Map<String,Object> result = new HashMap<>();
-         result.put("config",lokiConf);
+	@Value("${confagent.loki.startCmd:systemctl start loki.service}")
+	private String startCmd;
 
-         return R.ok(result);
-     }
+	@Value("${confagent.loki.stopCmd:systemctl stop loki.service}")
+	private String stopCmd;
 
-    /**
-    * @Description 代理本loki 接口
-    * @Author  han
-    * @Date   2021/8/4
-    */
-    @RequestMapping("/proxy/**")
-    @UnCheckToken
-    public void proxy(HttpServletRequest request, HttpServletResponse response){
-    	String method = request.getMethod();
-        String lokiPath = request.getServletPath().replace("/loki/proxy","");
-        String token = request.getHeader("Authorization");
+	@Value("${confagent.lokiPushUrlsFile:lokiPushUrls.yml}")
+	private String lokiFile;
 
-        R r = confagentUtil.checkToken(token);
+	private static String rootPath = Tool.WebPathUtil.getRootPath();
 
-        Boolean isQuery=false;
+	private static final String LOKI_PUSH_URL = "/loki/api/v1/push";
 
-        //queryAuth 配置只限制查询是否需要校验
-        if(queryAuth){
-            isQuery = Tool.StrUtil.isNotBlank(Arrays.stream(QUERY_API_SUFFIX).filter(t -> lokiPath.indexOf(t) != -1).findAny().orElse(null));
-        }
+	/**
+	 * @Description 写入loki配置文件
+	 * @Author han
+	 * @Date 2021/8/4
+	 */
+	@PostMapping("/config")
+	public R overwriteConfig(@RequestBody Map<String, Object> configs) {
 
-        if(isQuery &&r.getCode() != RCode.SUCCESS.getCode()){
-            ConfagentUtil.writeResponse(response,r);
-            return;
-        }
+		Map<String, Object> lokiConf = (Map<String, Object>) configs.get("config");
 
-        /*int port = 3100;//ConfagentUtil.getConfFilePort(lokiConfPath,LOKI_LISTEN_ADDR,3100);
-        Map<String,Object> lokiMap= Tool.YamlUtil.readAsMap(lokiConfPath);
-        Map<String,Object> serverObj = (Map<String,Object>)lokiMap.get("server");
-        if(serverObj!=null) {
-        	port = (Integer)serverObj.get("http_listen_port");
-        }*/
+		if (!Tool.MapUtil.isEmpty(lokiConf)) {
+			log.info("write loki conf:{}", Tool.JSONUtil.toJsonStr(lokiConf));
+			Tool.YamlUtil.writeAsMap(lokiConf, lokiConfPath);
+			if (Tool.StrUtil.isNotBlank(stopCmd)) {
+				log.info("stop loki:" + stopCmd);
+				try {
+					Tool.RuntimeUtil.exec(stopCmd);
+				} catch (Exception e) {
+					log.error(e);
+					return R.error(RCode.STOP_CMD_ERROR);
+				}
+				log.info("stop loki:" + stopCmd + "  end");
+			}
+			Tool.ThreadUtil.sleep(1000);
+			if (Tool.StrUtil.isNotBlank(startCmd)) {
+				log.info("start loki:" + startCmd);
+				try {
+//                	String[] b={"sh","-c",startCmd};
+//                	Tool.RuntimeUtil.exec(b);
+					Tool.RuntimeUtil.exec(startCmd);
+				} catch (Exception e) {
+					log.error(e);
+					return R.error(RCode.START_CMD_ERROR);
+				}
+				log.info("start loki:" + startCmd + "  end");
+			}
+		} else {
+			return R.error(RCode.LOKI_CONFIG_ISNULL);
+		}
+
+		return R.ok();
+	}
+
+	/**
+	 * @Description 获取loki相关配置
+	 * @Author han
+	 * @Date 2021/8/4
+	 */
+	@GetMapping("/config")
+	public R queryConfig(HttpServletRequest request) {
+		Map<String, Object> lokiConf = Tool.YamlUtil.readAsMap(lokiConfPath);
+		Map<String, Object> result = new HashMap<>();
+		result.put("config", lokiConf);
+		return R.ok(result);
+	}
+
+	/**
+	 * @throws IOException 
+	 * @throws IORuntimeException 
+	 * @Description 代理本loki 接口
+	 * @Author han
+	 * @Date 2021/8/4
+	 */
+	@RequestMapping("/proxy/**")
+	@UnCheckToken
+	public void proxy(HttpServletRequest request, HttpServletResponse response) throws IORuntimeException, IOException {
+		String lokiPath = request.getServletPath().replace("/loki/proxy", "");
+		String token = request.getHeader("Authorization");
+		R r = confagentUtil.checkToken(token);
+		Boolean isQuery = false;
+		// queryAuth 配置只限制查询是否需要校验
+		if (queryAuth) {
+			isQuery = Tool.ArrayUtil.contains(QUERY_API_SUFFIX, lokiPath);
+		}
+
+		if (isQuery && r.getCode() != RCode.SUCCESS.getCode()) {
+			ConfagentUtil.writeResponse(response, r);
+			return;
+		}
+
+		/*
+		 *  push 接口 特殊处理
+		 *  1、解析请求头
+		 *  2、解析请求体
+		 *  3、重新组装 请求参数
+		 *  4、放到缓存
+		 *  5、直接详情成功
+		 */
+		if (Tool.StrUtil.equals(lokiPath, LOKI_PUSH_URL)) {
+			// 复制请求头
+			HttpHeaders headers = new HttpHeaders();
+			Enumeration<String> headerNames = request.getHeaderNames();
+			while (headerNames.hasMoreElements()) {
+				String hn = headerNames.nextElement();
+				headers.add(hn, request.getHeader(hn));
+			}
+			// 复制 body
+			byte[] body = Tool.IoUtil.readBytes(request.getInputStream());
+			// 重新构造请求参数内容
+			HttpEntity<byte[]> httpEntity = new HttpEntity<byte[]>(body, headers);
+			// 放到缓存队列中，等待其它线程消费发送
+			LokiPushThread.addLogCache(httpEntity);
+			//响应 成功
+			response.setStatus(204);
+			return;
+		}
+
+		// 其他api 代理查询本机 LOKI api
+		String queryString = ReflectUtil.invoke(request, "getQueryString");
+		String targetUrl = String.format("%s:%s%s?%s", "127.0.0.1", 13100, lokiPath,Tool.StrUtil.emptyToDefault(queryString, ""));
+		requestLoki(targetUrl, token, request, response);
+
+	}
+
+	public void requestLoki(String targetUrl, String token, HttpServletRequest request, HttpServletResponse response) {
+		String url = UrlBuilder.ofHttp(targetUrl, Charset.forName("utf-8")).toString();
+
+		log.info("loki url: {}", url);
+		String method = request.getMethod();
+		HttpURLConnection conn = null;
+		ServletInputStream reqInputStream = null;
+		ServletOutputStream resOutputStream = null;
+		OutputStream connOutputStream = null;
+		InputStream connInputStream = null;
+		try {
+			conn = HttpConnection.create(url, null).getHttpURLConnection();
+			reqInputStream = request.getInputStream();
+			resOutputStream = response.getOutputStream();
+			conn.setRequestMethod(method);
+			// 复制请求头
+			Enumeration<String> headerNames = request.getHeaderNames();
+			while (headerNames.hasMoreElements()) {
+				String hn = headerNames.nextElement();
+				if (!"authorization".equalsIgnoreCase(hn)) {
+					ReflectUtil.invoke(conn, "addRequestProperty", hn, request.getHeader(hn));
+				}
+			}
+			ReflectUtil.invoke(conn, "addRequestProperty", "authorization", token);
+
+			if (!"GET".equalsIgnoreCase(method)) {
+				conn.setDoOutput(true);
+				conn.setDoInput(true);
+				conn.setUseCaches(false);
+				connOutputStream = conn.getOutputStream();
+				Tool.IoUtil.copy(reqInputStream, connOutputStream);
+			}
+			conn.connect();
+			int responseCode = conn.getResponseCode();
+			connInputStream = (responseCode < 400) ? conn.getInputStream() : conn.getErrorStream();
+			String responseMessage = conn.getResponseMessage();
+			Map<String, List<String>> responseHeaders = conn.getHeaderFields();
+			// 复制响应头
+			for (Map.Entry<String, List<String>> en : responseHeaders.entrySet()) {
+				String key = en.getKey();
+				if (Tool.StrUtil.isEmpty(key) || "Transfer-Encoding".equals(key))
+					continue;
+				List<String> value = en.getValue();
+				ReflectUtil.invoke(response, "addHeader", key, Tool.StrUtil.join("; ", value));
+			}
+			// ReflectUtil.invoke(response, "setStatus", responseCode, responseMessage);
+			response.setStatus(responseCode, responseMessage);
 
-        LokiPushUrlsEntity lokiPushUrlsEntity;
-        if (StrUtil.isEmpty(LOKI_PUSH_URL_JSONSTR)) {
-            File lf = Tool.FileUtil.file(rootPath, lokiFile);
-            lokiPushUrlsEntity = YamlUtil.readAsLokiPushUrlsEntity(lf.getAbsolutePath());
-        } else {
-            lokiPushUrlsEntity = JSONObject.parseObject(LOKI_PUSH_URL_JSONSTR, LokiPushUrlsEntity.class);
-        }
-        if (lokiPushUrlsEntity != null && lokiPushUrlsEntity.getLokiPushUrls() != null
-                && lokiPushUrlsEntity.getLokiPushUrls().size() > 0) {
-    		List<LokiPushUrlEntity> list = lokiPushUrlsEntity.getLokiPushUrls();
-    		//loki 代理接口 为/loki/api/v1/push 接口 时，根据lokiPushUrls 配置 转发所有的target，否则随机选择一个target转发即可
-    		if("/loki/api/v1/push".equals(lokiPath)) {
-    			List<String> rltList = new ArrayList<String>();
-    			
-    			for(LokiPushUrlEntity urlEntity:list) {
-    				String targetUrl = urlEntity.getTarget();
-    				if(targetUrl.startsWith("http://")) {
-                        targetUrl = targetUrl.substring(7);
-    				}
-    				RequestThread requestThread = new RequestThread();
-                    requestThread.setTargetUrl(targetUrl);
-    				// requestThread.setHost(ip);
-    				requestThread.setToken(urlEntity.getToken());
-    				// requestThread.setPort(port);
-    				requestThread.setMethod(method);
-    				// requestThread.setPath(lokiPath);
-    				requestThread.setRequest(request);
-    				requestThread.setResponse(response);
-    				Future<String> f = Tool.ThreadUtil.execAsync(requestThread);//.execute(requestThread);
-    				try {
-    					String rlt = f.get(5, TimeUnit.SECONDS);
-    					rltList.add(rlt);
-    				} catch (Exception e) {
-    					log.error(e);
-    				}
-    			}
-    			if(rltList.size()>0) {
-    				OutputStream outputStream = null;
-    				try {
-                        log.info("loki 返回内容：" + JSONObject.toJSONString(rltList));
-    					outputStream = response.getOutputStream();
-    					Tool.IoUtil.writeUtf8(outputStream,true, rltList.get(0));
-    					outputStream.flush();
-    					
-    				} catch (Exception e) {
-    					log.error(e);
-    				} finally {
-    					Tool.IoUtil.close(outputStream);
-    				}
-    			}
-            } else {
-                // 其他api 代理查询本机 LOKI api
-                String queryString = ReflectUtil.invoke(request, "getQueryString");
-                String targetUrl = String.format("%s:%s%s?%s", "127.0.0.1", 13100, lokiPath, StrUtil.emptyToDefault(queryString, ""));
-                requestLoki(targetUrl, token, request, response);
-            }
-    	}else {
-			OutputStream outputStream = null;
+			Tool.IoUtil.copy(connInputStream, resOutputStream);
+			resOutputStream.flush();// flush 输出流
+		} catch (Exception e) {
 			try {
-				outputStream = response.getOutputStream();
-				Tool.IoUtil.writeUtf8(outputStream,true, "The lokiPushUrls file does not exist");
-				outputStream.flush();
-				
-			} catch (Exception e) {
-				log.error(e);
-			} finally {
-				Tool.IoUtil.close(outputStream);
+				response.sendError(500, "request error");
+			} catch (IOException e1) {
+				log.error("proxy request error", e1);
 			}
-    	}
-    	
-    }
-
-    public void requestLoki(String targetUrl, String token, HttpServletRequest request, HttpServletResponse response) {
-        String url = UrlBuilder.ofHttp(targetUrl, Charset.forName("utf-8")).toString();
-
-        log.info("loki url: {}", url);
-        String method = request.getMethod();
-        HttpURLConnection conn = null;
-        ServletInputStream reqInputStream = null;
-        ServletOutputStream resOutputStream = null;
-        OutputStream connOutputStream = null;
-        InputStream connInputStream = null;
-        try {
-            conn = HttpConnection.create(url, null).getHttpURLConnection();
-            reqInputStream = request.getInputStream();
-            resOutputStream = response.getOutputStream();
-            conn.setRequestMethod(method);
-            // 复制请求头
-            Enumeration<String> headerNames = request.getHeaderNames();
-            while (headerNames.hasMoreElements()) {
-                String hn = headerNames.nextElement();
-                if(!"authorization".equalsIgnoreCase(hn)) {
-                	ReflectUtil.invoke(conn,"addRequestProperty",hn,request.getHeader(hn));
-                }
-            }
-            ReflectUtil.invoke(conn,"addRequestProperty","authorization",token);
-            
-            if (!"GET".equalsIgnoreCase(method)) {
-                conn.setDoOutput(true);
-                conn.setDoInput(true);
-                conn.setUseCaches(false);
-                connOutputStream = conn.getOutputStream();
-                Tool.IoUtil.copy(reqInputStream, connOutputStream);
-            }
-            conn.connect();
-            int responseCode = conn.getResponseCode();
-            connInputStream = (responseCode < 400)? conn.getInputStream():conn.getErrorStream();
-            String responseMessage = conn.getResponseMessage();
-            Map<String, List<String>> responseHeaders = conn.getHeaderFields();
-            //复制响应头
-            for(Map.Entry<String, List<String>> en : responseHeaders.entrySet()) {
-                String key = en.getKey();
-                if (Tool.StrUtil.isEmpty(key) || "Transfer-Encoding".equals(key)) continue;
-                List<String> value = en.getValue();
-                ReflectUtil.invoke(response,"addHeader",key,Tool.StrUtil.join("; ",value));
-            }
-            // ReflectUtil.invoke(response, "setStatus", responseCode, responseMessage);
-            response.setStatus(responseCode, responseMessage);
-
-            Tool.IoUtil.copy(connInputStream, resOutputStream);
-            resOutputStream.flush();//flush 输出流
-        } catch (Exception e) {
-            try {
-                response.sendError(500, "request error");
-            } catch (IOException e1) {
-                log.error("proxy request error",e1);
-            }
-            log.error("request error : ",e);
-        }finally {
-            Tool.IoUtil.close(reqInputStream,resOutputStream,connOutputStream,connInputStream);
-            if(conn != null){
-                conn.disconnect();
-            }
-        }
-    }
+			log.error("request error : ", e);
+		} finally {
+			Tool.IoUtil.close(reqInputStream, resOutputStream, connOutputStream, connInputStream);
+			if (conn != null) {
+				conn.disconnect();
+			}
+		}
+	}
 
 }
diff --git a/src/main/java/net/geedge/confagent/entity/LokiPushUrlEntity.java b/src/main/java/net/geedge/confagent/entity/LokiPushUrlEntity.java
index 83c6be7..9bd92d1 100644
--- a/src/main/java/net/geedge/confagent/entity/LokiPushUrlEntity.java
+++ b/src/main/java/net/geedge/confagent/entity/LokiPushUrlEntity.java
@@ -4,7 +4,7 @@ import lombok.Data;
 
 @Data
 public class LokiPushUrlEntity {
-    private String mode;
-    private String token;
-    private String target;
+	private String mode;
+	private String token;
+	private String target;
 }
diff --git a/src/main/java/net/geedge/confagent/thread/LokiContext.java b/src/main/java/net/geedge/confagent/thread/LokiContext.java
new file mode 100644
index 0000000..764a578
--- /dev/null
+++ b/src/main/java/net/geedge/confagent/thread/LokiContext.java
@@ -0,0 +1,74 @@
+package net.geedge.confagent.thread;
+
+import java.util.Hashtable;
+import java.util.List;
+import java.util.Map.Entry;
+import java.util.Set;
+import java.util.concurrent.CopyOnWriteArrayList;
+
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.annotation.Configuration;
+
+import cn.hutool.log.Log;
+import net.geedge.confagent.entity.LokiPushUrlEntity;
+import net.geedge.confagent.util.Tool;
+
+
+@Configuration
+public class LokiContext {
+	private static Log log = Log.get();
+	
+    private static int lokiPushCacheSize;
+    
+	/**
+	 * loki push thread 注册表
+	 */
+	public final static Hashtable<LokiPushUrlEntity,LokiPushThread> LOKI_PUSH_TABLE = new Hashtable<LokiPushUrlEntity,LokiPushThread>();
+	/**
+	 * loki push urls
+	 */
+	public static List<LokiPushUrlEntity> LOKI_PUSH_URLS = new CopyOnWriteArrayList<LokiPushUrlEntity>();
+
+	/**
+	 * 更新推送路径
+	 * @param lokiPushUrlList
+	 */
+	public static void loadUrls(List<LokiPushUrlEntity> lokiPushUrlList) {
+		/*
+    	 * 更新 push url
+    	 */
+    	LokiContext.LOKI_PUSH_URLS.clear();
+    	LokiContext.LOKI_PUSH_URLS.addAll(lokiPushUrlList);
+    	/*
+    	 * 关闭不再推送线程，开启新增url
+    	 */
+    	Hashtable<LokiPushUrlEntity,LokiPushThread> lokiPushTable = LokiContext.LOKI_PUSH_TABLE;
+    	Set<Entry<LokiPushUrlEntity,LokiPushThread>> entrySet = lokiPushTable.entrySet();
+    	//关闭最新url中不包含的线程
+    	for(Entry<LokiPushUrlEntity,LokiPushThread> en : entrySet) {
+    		LokiPushUrlEntity urlEntity = en.getKey();
+    		LokiPushThread thread = en.getValue();
+    		if(!lokiPushUrlList.contains(urlEntity)) {
+    			thread.stop();
+    			lokiPushTable.remove(urlEntity);
+    			log.info("删除loki push url: {}", urlEntity.getTarget());
+    		}
+    	}
+    	//添加新增的url并启动线程
+    	for(LokiPushUrlEntity urlEntity: lokiPushUrlList) {
+    		if(!lokiPushTable.containsKey(urlEntity)) {
+    			LokiPushThread thread = new LokiPushThread(lokiPushCacheSize,urlEntity);
+    			//启动线程
+    			Tool.ThreadUtil.execute(thread);
+    			lokiPushTable.put(urlEntity, thread);
+    			log.info("新增loki push url: {}", urlEntity.getTarget());
+    		}
+    	}
+	}
+	
+	@Value("${confagent.loki.push.cache.size:10000}")
+	public void setLokiPushCacheSize(int size) {
+		LokiContext.lokiPushCacheSize = size;
+	}
+
+}
diff --git a/src/main/java/net/geedge/confagent/thread/LokiPushThread.java b/src/main/java/net/geedge/confagent/thread/LokiPushThread.java
new file mode 100644
index 0000000..cdac7a6
--- /dev/null
+++ b/src/main/java/net/geedge/confagent/thread/LokiPushThread.java
@@ -0,0 +1,117 @@
+package net.geedge.confagent.thread;
+
+import java.util.Map.Entry;
+import java.util.Set;
+import java.util.concurrent.TimeUnit;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpEntity;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpMethod;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.client.RestTemplate;
+
+import cn.hutool.core.date.StopWatch;
+import cn.hutool.log.Log;
+import net.geedge.confagent.entity.LokiPushUrlEntity;
+import net.geedge.confagent.util.LimitedQueue;
+import net.geedge.confagent.util.Tool;
+
+/**
+ * loki 日志数据推送线程
+ * @author ThinkPad
+ *
+ */
+public class LokiPushThread implements Runnable{
+	private static final Log log = Log.get();
+
+	private final static int LOG_CACHE_DEFAULT_SIZE = 10000;
+	private final LokiPushUrlEntity url;
+	private static final String LOKI_PUSH_URL = "/loki/api/v1/push";
+	/**
+	 * 缓存list
+	 */
+	private final LimitedQueue<HttpEntity<byte[]>> LOG_CACHE;
+	/**
+	 * 运行标志
+	 */
+	private boolean runFlag = true;
+
+	private RestTemplate restTemplate = Tool.SpringUtil.getBean(RestTemplate.class);
+	
+	public LokiPushThread(LokiPushUrlEntity url) {
+		this(LOG_CACHE_DEFAULT_SIZE,url);
+	}
+	
+	public LokiPushThread(int cacheSize,LokiPushUrlEntity url) {
+		this.url = url;
+		LOG_CACHE = new LimitedQueue<HttpEntity<byte[]>>(cacheSize);
+	}
+	
+	public void add(HttpEntity<byte[]> entity) {
+		this.LOG_CACHE.add(entity);
+	}
+	
+	@Override
+	public void run() {
+		//设置线程名称
+		Thread.currentThread().setName("LokiPushThread-" + Tool.IdUtil.fastShortUUID());
+		log.info("thread start: {}", url.getTarget());
+		String targetPushUrl = LokiPushThread.genPushUrl(url.getTarget());
+		while(runFlag) {
+			try {
+				StopWatch sw = StopWatch.create("test");
+				sw.start();
+				// 1、从队列获取内容
+				HttpEntity<byte[]> entity = LOG_CACHE.poll(500, TimeUnit.MILLISECONDS);
+				if(entity == null) {
+					continue;
+				}
+				//2、设置header token
+				if(Tool.StrUtil.isNotBlank(url.getToken())) {
+					HttpHeaders headers = new HttpHeaders();
+					headers.addAll(entity.getHeaders());
+					headers.set("Authorization", url.getToken());
+					entity = new HttpEntity<byte[]>(entity.getBody(), headers);
+				}
+				//3、发送
+				ResponseEntity<String> responseEntity = restTemplate.exchange(targetPushUrl, HttpMethod.valueOf("POST"), entity, String.class);
+				if(!responseEntity.getStatusCode().is2xxSuccessful()) {
+					//发送失败记录日志
+					log.error("loki push error,target:{},response:{}", url.getTarget(),responseEntity.getBody());
+				}
+				sw.stop();
+				if(log.isDebugEnabled()) {
+					log.debug("sw statistics: {}", Tool.DateUtil.formatBetween(sw.getTotalTimeMillis()));
+				}
+			} catch (Exception e) {
+				log.error("loki push error",e);
+			}
+		}
+		LOG_CACHE.clear();
+		log.info("thread close: {}",url.getTarget());
+	}
+
+	/**
+	 * 关闭线程
+	 */
+	public void stop() {
+		this.runFlag = false;
+	}
+	
+	/**
+	 * 将 loki 接收到 log 日志内容 放到 各个缓存中
+	 * @param entity
+	 */
+	public static void addLogCache(HttpEntity<byte[]> entity) {
+		Set<Entry<LokiPushUrlEntity,LokiPushThread>> entrySet = LokiContext.LOKI_PUSH_TABLE.entrySet();
+		for(Entry<LokiPushUrlEntity,LokiPushThread> en : entrySet) {
+			en.getValue().add(entity);
+		}
+	}
+	
+	private static String genPushUrl(String url) {
+		url = url.endsWith("/") ? url.substring(0, url.length()-1) : url;
+		return Tool.StrUtil.concat(true,url, LOKI_PUSH_URL);
+	}
+}
diff --git a/src/main/java/net/geedge/confagent/thread/RequestThread.java b/src/main/java/net/geedge/confagent/thread/RequestThread.java
deleted file mode 100644
index 7dc04e4..0000000
--- a/src/main/java/net/geedge/confagent/thread/RequestThread.java
+++ /dev/null
@@ -1,118 +0,0 @@
-package net.geedge.confagent.thread;

-

-import cn.hutool.core.net.url.UrlBuilder;

-import cn.hutool.core.util.ReflectUtil;

-import cn.hutool.core.util.StrUtil;

-import cn.hutool.http.HttpConnection;

-import cn.hutool.log.Log;

-import lombok.Data;

-import net.geedge.confagent.util.Tool;

-

-import javax.servlet.ServletInputStream;

-import javax.servlet.http.HttpServletRequest;

-import javax.servlet.http.HttpServletResponse;

-import java.io.InputStream;

-import java.io.OutputStream;

-import java.net.HttpURLConnection;

-import java.nio.charset.Charset;

-import java.util.Enumeration;

-import java.util.List;

-import java.util.Map;

-import java.util.concurrent.Callable;

-

-@Data

-public class RequestThread implements Callable<String>{

-

-    private final static Log log = Log.get();

-    private String targetUrl;

-    private String token;

-    private String method;

-    //private String host;

-	//private int port;

-	//private String path;

-	public  HttpServletRequest request;

-	private HttpServletResponse response;

-	

-	@Override

-	public String call() throws Exception {

-		

-        String queryString = ReflectUtil.invoke(request, "getQueryString");

-        queryString = StrUtil.isNotBlank(queryString)?queryString:"";

-        // String url = UrlBuilder.create().setScheme("http").setHost(host).setPort(port).setPath(UrlPath.of(path, Charset.forName("UTF-8"))).toURL().toString() + "?" + queryString;

-        String url = UrlBuilder.ofHttp(targetUrl, Charset.forName("utf-8")).toString();

-        log.info("loki url: {}", url);

-//        String method = request.getMethod();

-        HttpURLConnection conn = null;

-        ServletInputStream reqInputStream = null;

-//        ServletOutputStream resOutputStream = null;

-        OutputStream connOutputStream = null;

-        InputStream connInputStream = null;

-        try {

-            conn = HttpConnection.create(url, null).getHttpURLConnection();

-            reqInputStream = request.getInputStream();

-

-//            resOutputStream = response.getOutputStream();

-            conn.setRequestMethod(method);

-//            conn.addRequestProperty("authorization", token);

-            // 复制请求头

-            Enumeration<String> headerNames = request.getHeaderNames();

-            while (headerNames.hasMoreElements()) {

-                String hn = headerNames.nextElement();

-                if(!"authorization".equalsIgnoreCase(hn)) {

-                	ReflectUtil.invoke(conn,"addRequestProperty",hn,request.getHeader(hn));

-                }

-                log.info(hn+"===="+request.getHeader(hn));

-            }

-            ReflectUtil.invoke(conn,"addRequestProperty","authorization",token);

-            

-            

-            if (!"GET".equalsIgnoreCase(method)) {

-                conn.setDoOutput(true);

-                conn.setDoInput(true);

-                conn.setUseCaches(false);

-                connOutputStream = conn.getOutputStream();

-                Tool.IoUtil.copy(reqInputStream, connOutputStream);

-            }

-            conn.connect();

-            int responseCode = conn.getResponseCode();

-            connInputStream = (responseCode < 400)? conn.getInputStream():conn.getErrorStream();

-            String responseMessage = conn.getResponseMessage();

-            Map<String, List<String>> responseHeaders = conn.getHeaderFields();

-            

-            if(!response.isCommitted()) {

-            	log.info("复制响应头");

-            	//复制响应头

-            	for(Map.Entry<String, List<String>> en : responseHeaders.entrySet()) {

-            		String key = en.getKey();

-            		if (Tool.StrUtil.isEmpty(key) || "Transfer-Encoding".equals(key)) continue;

-            		List<String> value = en.getValue();

-            		ReflectUtil.invoke(response,"addHeader",key,Tool.StrUtil.join("; ",value));

-            	}

-            	// ReflectUtil.invoke(response, "setStatus", responseCode, responseMessage);

-                response.setStatus(responseCode, responseMessage);

-            }

-            

-            String str = Tool.IoUtil.read(connInputStream, "UTF-8");

-            log.info(str);

-            

-//            Tool.IoUtil.copy(connInputStream, resOutputStream);

-//            resOutputStream.flush();//flush 输出流

-            return str;

-        } catch (Exception e) {

-            log.error("request error : ", e);

-            try {

-//                response.sendError(500, "request error");

-                return "request error";

-            } catch (Exception e1) {

-                log.error("proxy request error",e1);

-            }

-        }finally {

-//            Tool.IoUtil.close(reqInputStream,resOutputStream,connOutputStream,connInputStream);

-            Tool.IoUtil.close(reqInputStream,connOutputStream,connInputStream);

-            if(conn != null){

-                conn.disconnect();

-            }

-        }

-        return "";

-	}

-}

diff --git a/src/main/java/net/geedge/confagent/util/LimitedQueue.java b/src/main/java/net/geedge/confagent/util/LimitedQueue.java
new file mode 100644
index 0000000..0bd2c13
--- /dev/null
+++ b/src/main/java/net/geedge/confagent/util/LimitedQueue.java
@@ -0,0 +1,22 @@
+package net.geedge.confagent.util;
+
+import java.util.concurrent.LinkedBlockingQueue;
+
+public class LimitedQueue<E> extends LinkedBlockingQueue<E> {
+	private static final long serialVersionUID = 1878117398478874074L;
+	
+	private int limit;
+
+    public LimitedQueue(int limit) {
+        this.limit = limit;
+    }
+
+    @Override
+    public boolean add(E o) {
+        boolean added = super.add(o);
+        while (added && size() > limit) {
+           super.remove();
+        }
+        return added;
+    }
+}