12 扩缩容基本实现

src/main/java/com/lyh/common/aliyun/service/AliYunEcsService.java

@@ -69,12 +69,13 @@ public class AliYunEcsService {
                 .setRegionId(regionId);
         DescribeInstancesResponse resp = this.client.describeInstances(describeInstancesRequest);
         java.util.List<DescribeInstancesResponseBody.DescribeInstancesResponseBodyInstancesInstance> instances = resp.body.instances.instance;
+
         log.info(regionId + " 下 ECS 实例列表:");
 
         //存储结果的List
         ArrayList<String> result = new ArrayList<>();
         for (DescribeInstancesResponseBody.DescribeInstancesResponseBodyInstancesInstance instance : instances) {
-            log.info("主机名：" + instance.hostName + "  实例ID：" + instance.instanceId + "  CPU：" + instance.cpu + "  内存：" + instance.memory + "  MB 规格：" + instance.instanceType + "  系统：" + instance.OSType + "(" + instance.OSName + ")  状态：" + instance.status);
+//            log.info("主机名：" + instance.hostName + "  实例ID：" + instance.instanceId + "  CPU：" + instance.cpu + "  内存：" + instance.memory + "  MB 规格：" + instance.instanceType + "  系统：" + instance.OSType + "(" + instance.OSName + ")  状态：" + instance.status);
 
             result.add(instance.instanceId);
         }

src/main/java/com/lyh/handle/HandleCache.java

@@ -77,7 +77,7 @@ public class HandleCache {
         this.getIpAndLoadCounts();
         this.getIpAndWeights();
         this.getLoadNodeOrderListByIpAndWeights();
-}
+    }
 
 
     /*
@@ -98,7 +98,7 @@ public class HandleCache {
 
             gatewayNodeIdCache.put(ecsIDList);
         } catch (Exception e) {
-            log.error("获取节点ID失败：{}", e.getMessage());
+            throw new RuntimeException("获取节点ID失败" + e.getMessage());
         }
     }
 
@@ -124,36 +124,37 @@ public class HandleCache {
             }
 
             //将ID进行拼接，用逗号分隔
-            String ids = "";
+            StringBuilder ids = new StringBuilder();
             for (String id : ecsIDList) {
-                ids += id + ",";
+                ids.append(id).append(",");
             }
-            ids = ids.substring(0, ids.length() - 1);
+            ids = new StringBuilder(ids.substring(0, ids.length() - 1));
 
             //查询所有ID实例的详细信息
-            List<DescribeInstancesResponseBody.DescribeInstancesResponseBodyInstancesInstance> response = aliYunEcsService.queryInstancesInformation(ids);
+            List<DescribeInstancesResponseBody.DescribeInstancesResponseBodyInstancesInstance> response = aliYunEcsService.queryInstancesInformation(ids.toString());
 
 
             for (DescribeInstancesResponseBody.DescribeInstancesResponseBodyInstancesInstance item : response) {
-                log.info("查询第{" + count + "}个实例的ID:" + item.getInstanceId());
-                log.info("名称:" + item.getInstanceName());
+
+                log.info("查询第{" + count + 1 + "}个实例的ID:" + item.getInstanceId());
+//                log.info("名称:" + item.getInstanceName());
                 log.info("地域ID:" + item.getRegionId());
-                log.info("状态:" + item.getStatus());
-                log.info("类型:" + item.getInstanceType());
+//                log.info("状态:" + item.getStatus());
+//                log.info("类型:" + item.getInstanceType());
                 log.info("CPU核心数:" + item.getCpu());
                 log.info("内存大小:" + item.getMemory() + "MB");
-                log.info("磁盘大小:" + item.getLocalStorageCapacity() + "G");
-                log.info("操作系统:" + item.getOSName());
-                log.info("网络类型:" + item.getInstanceNetworkType());
+//                log.info("磁盘大小:" + item.getLocalStorageCapacity() + "G");
+//                log.info("操作系统:" + item.getOSName());
+//                log.info("网络类型:" + item.getInstanceNetworkType());
                 log.info("公网出带宽值:" + item.getInternetMaxBandwidthOut() + "Mbit/s");
-                log.info("公网入带宽值:" + item.getInternetMaxBandwidthIn() + "Mbit/s");
+//                log.info("公网入带宽值:" + item.getInternetMaxBandwidthIn() + "Mbit/s");
                 log.info("公网IP:" + UserUtil.removeBrackets(item.getPublicIpAddress().getIpAddress().toString()));
                 log.info("私网IP:" + UserUtil.removeBrackets(item.getVpcAttributes().getPrivateIpAddress().ipAddress.toString()));
-                log.info("专有网络VPCID:" + item.getVpcAttributes().getVpcId());
-                log.info("安全组ID:" + UserUtil.removeBrackets(item.getSecurityGroupIds().getSecurityGroupId().toString()));
+//                log.info("专有网络VPCID:" + item.getVpcAttributes().getVpcId());
+//                log.info("安全组ID:" + UserUtil.removeBrackets(item.getSecurityGroupIds().getSecurityGroupId().toString()));
                 log.info("创建时间:" + item.getCreationTime());
-                log.info("到期时间:" + item.getExpiredTime());
-                log.info("是否可以回收:" + (item.getRecyclable() ? "是" : "否") + "\n\n");
+//                log.info("到期时间:" + item.getExpiredTime());
+//                log.info("是否可以回收:" + (item.getRecyclable() ? "是" : "否") + "\n\n");
 
                 //存入集合
                 gatewayNodeInfos.add(
@@ -283,6 +284,7 @@ public class HandleCache {
         }
 
         log.info("实例IP和对应的权重：{}", ipAndWeights);//[IpAndWeight(nodeIp=47.102.158.233, weight=55), IpAndWeight(nodeIp=47.102.123.209, weight=44)]
+        log.info("\n\n\n");
 
         gatewayIpAndLoadWeightCache.put(ipAndWeights);
     }
@@ -336,7 +338,8 @@ public class HandleCache {
             }
         }
 
-        log.info("负载节点的IP序列列表：{}", loadNodeList);
+//        log.info("负载节点的IP序列列表：{}", loadNodeList);
+
         //节点IP序列存入缓存
         gatewayNodeOrderCache.put(loadNodeList);
     }

src/main/java/com/lyh/job/Timer.java

@@ -3,9 +3,10 @@ package com.lyh.job;
 import com.lyh.common.aliyun.service.AliYunEcsService;
 import com.lyh.gateway.cache.GatewayIpAndLoadCountCache;
 import com.lyh.gateway.cache.GatewayNodeIdCache;
+import com.lyh.gateway.cache.GatewayNodeInfoCache;
+import com.lyh.gateway.mode.GatewayNodeInfo;
 import com.lyh.gateway.mode.IpAndLoadCount;
 import lombok.extern.slf4j.Slf4j;
-import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.scheduling.annotation.Scheduled;
 import org.springframework.stereotype.Component;
 
@@ -24,20 +25,26 @@ public class Timer {
     /*
      * 阿里云api接口类
      * */
-    @Autowired
-    private AliYunEcsService aliYunEcsService;
+    private final AliYunEcsService aliYunEcsService;
 
     /*
      * 操作缓存
      * */
-    @Autowired
-    private GatewayIpAndLoadCountCache gatewayIpAndLoadCountCache;
+    private final GatewayIpAndLoadCountCache gatewayIpAndLoadCountCache;
 
-    @Autowired
-    private GatewayNodeIdCache gatewayNodeIdCache;
+    private final GatewayNodeIdCache gatewayNodeIdCache;
+
+    private final GatewayNodeInfoCache gatewayNodeInfoCache;
+
+    public Timer(AliYunEcsService aliYunEcsService, GatewayIpAndLoadCountCache gatewayIpAndLoadCountCache, GatewayNodeIdCache gatewayNodeIdCache, GatewayNodeInfoCache gatewayNodeInfoCache) {
+        this.aliYunEcsService = aliYunEcsService;
+        this.gatewayIpAndLoadCountCache = gatewayIpAndLoadCountCache;
+        this.gatewayNodeIdCache = gatewayNodeIdCache;
+        this.gatewayNodeInfoCache = gatewayNodeInfoCache;
+    }
 
 
-    @Scheduled(cron = "0/5 * * * * ?")
+    @Scheduled(cron = "0/10 * * * * ?")
     /*
      * @Description: 动态扩容
      * @Date: 2024/4/19 9:44
@@ -47,6 +54,10 @@ public class Timer {
     public void dynamicExpansion() {
         //先获取所有的负载列表
         List<IpAndLoadCount> ipAndLoadCounts = gatewayIpAndLoadCountCache.get();
+        if (ipAndLoadCounts.isEmpty()) {
+            log.error("负载量列表为空！");
+            return;
+        }
 
         //计算所有节点的负载
         int connectSize = ipAndLoadCounts.stream().mapToInt(IpAndLoadCount::getLoadCount).sum();
@@ -58,7 +69,7 @@ public class Timer {
             //执行节点扩容
 
             //返回实例的ID
-            String instanceId = null;
+            String instanceId;
             try {
                 instanceId = aliYunEcsService.createAndRunInstance();
             } catch (Exception e) {
@@ -66,8 +77,7 @@ public class Timer {
             }
 
             if (!instanceId.isEmpty()) {
-                log.info("扩容 成功！");
-                log.info("扩容的节点ip为：" + instanceId);
+                log.info("扩容 成功！扩容的节点ip为：" + instanceId);
             }
         } else {
             log.info("暂时不需要扩容");
@@ -75,51 +85,60 @@ public class Timer {
     }
 
 
-//    @Scheduled(cron = "0/5 * * * * ?")
+    @Scheduled(cron = "0/10 * * * * ?")
     /* TODO 缩容有问题
      * @Description: 动态缩容
      * @Date: 2024/4/19 9:44
      * @Param: []
      * @Return: void
      **/
-//    public void dynamicReduction() {
-//        //求出所有的节点ID
-//        List<String> nodeIds = gatewayNodeIdCache.get();
-//
-//        if (nodeIds.size() <= 1) {
-//            log.error("暂无节点可删除！");
-//            return;
-//        }
-//
-//
-//        //先获取所有的负载列表
-//        List<IpAndLoadCount> ipAndLoadCounts = gatewayIpAndLoadCountCache.get();
-//        if (ipAndLoadCounts.size() <= 1) {
-//            log.error("负载列表为空！");
-//            return;
-//        }
-//
-//        //计算所有节点的负载
-//        int connectSize = ipAndLoadCounts.stream().mapToInt(IpAndLoadCount::getLoadCount).sum();
-//
-//        //求出平均值
-//        int avg = connectSize / ipAndLoadCounts.size();
-//
-//        if (avg <= 30) {
-//
-//
-//            request = request.substring(0, request.length() - 1);
-//
-//            //执行节点缩容
-//            try {
-//                aliYunEcsService.releaseInstances(request);
-//            } catch (Exception e) {
-//                throw new RuntimeException("节点缩容失败！" + e.getMessage());
-//            }
-//        } else {
-//            log.info("暂时不需要缩容");
-//        }
-//    }
+    public void dynamicReduction() {
+        //求出所有的节点ID
+        List<String> nodeIds = gatewayNodeIdCache.get();
+
+        //如果节点数量小于等于1，则不执行缩容，至少保留一个节点
+        if (nodeIds.size() <= 1) {
+            log.info("暂无节点可删除！");
+            return;
+        }
+
+
+        //先获取所有的负载列表
+        List<IpAndLoadCount> ipAndLoadCounts = gatewayIpAndLoadCountCache.get();
+        if (ipAndLoadCounts.size() <= 1) {
+            log.error("负载列表为空！");
+            return;
+        }
+
+        //获取节点信息（IP）集合
+        List<GatewayNodeInfo> gatewayNodeInfoList = gatewayNodeInfoCache.get();
+        if (gatewayNodeInfoList.isEmpty()) {
+            log.error("节点信息为空！");
+            return;
+        }
+
+        //判断哪个节点的负载小于30
+
+        for (GatewayNodeInfo gatewayNodeInfo : gatewayNodeInfoList) {//获取节点的IP
+            String ip = gatewayNodeInfo.getPublicIpAddress();
+            //获取当前循环节点的负载
+            int loadCount = ipAndLoadCounts.stream().filter(ipAndLoadCount -> ipAndLoadCount.getIp().equals(ip)).findFirst().get().getLoadCount();
+            //判断节点的负载是否小于30
+            if (loadCount < 30) {
+                //对这个节点进行缩容
+                String instanceId = gatewayNodeInfo.getInstanceId();
+                try {
+                    aliYunEcsService.releaseInstances(instanceId);
+                } catch (Exception e) {
+                    throw new RuntimeException("节点缩容失败！" + e.getMessage());
+                }
+                log.info("节点缩容成功");
+                //一次只删除一个节点
+                break;
+            }
+        }
+
+    }
 
 
 }

src/test/java/Test.java

@@ -72,7 +72,7 @@ public class Test {
      **/
     @org.junit.jupiter.api.Test
     public void releaseInstances() throws Exception {
-        aliYunEcsService.releaseInstances("i-uf62wv013unz2ee2tsl6");
+        aliYunEcsService.releaseInstances("i-uf6h4s0jtpvrtgx574s1,");
     }
 
     /*