add maintaince

run.ts

@@ -30,6 +30,7 @@ interface Config {
   retryCount: number;
   interval: number;
   cocurrent: number;
+  maintainance?: string[];
 }
 
 interface DomainRecordObject {
@@ -350,6 +351,9 @@ class Checker {
       return ConnectResult.CDNBad;
     }
   }
+
+  maintainance: Set<string>;
+
   constructor(private config: Config) {
     this.queue = new PQueue({ concurrency: this.config.cocurrent || 10 });
     this.client = new Aliyun(config.aliyun);
@@ -367,6 +371,7 @@ class Checker {
     this.checkMethods.set('icmp', (record: Source, address: string) => {
       return this.checkIcmp(record, address);
     });
+    this.maintainance = new Set(config.maintainance || []);
   }
   private message(msg: string) {
     console.log(`${this.id} => ${msg}`);
@@ -442,6 +447,15 @@ class Checker {
   }
 
   async checkSource(source: Source, address: string): Promise<ConnectResult> {
+    if (this.maintainance.has(address)) {
+      this.message(
+        `Skip ${this.getSourcePattern(
+          source,
+          address,
+        )} because it is in maintainance.`,
+      );
+      return ConnectResult.CDNBad;
+    }
     const checkMethodFunction = this.checkMethods.get(source.protocol);
     assert(
       checkMethodFunction,