1

server/web3dbspider/services/dbevent_process.js

@@ -61,12 +61,28 @@ class DbEventProcess extends BaseService {
     const logHead = this.getInstanceName() + ' pullEvent: ';
   }
 
+  getStartIdx() {
+    return this.lastIdx;
+  }
+
+  getEndIdx() {
+    if (utils.hasKey(DbEventProcess.#tableMaxIdxHash, this.getTableName())) {
+      return DbEventProcess.#tableMaxIdxHash[this.getTableName()];
+    } else {
+      return BigInt(0);
+    }
+  }
+
+  getNetId() {
+    return this.net['net_id'];
+  }
+
   getEventName() {
     return this.eventConf['event_name'];
   }
 
   getContractAddress() {
-    //return this.bc.getContractAddressByName(this.getContractName());
+    return this.contractAddress;
   }
 
   getContractName() {
@@ -78,6 +94,65 @@ class DbEventProcess extends BaseService {
     return instName;
   }
 
+  getTableName() {
+    return this.eventConf['table_name'];
+  }
+
+  async getLastIdx() {
+    const logHead = this.getInstanceName() + ' getLastIdx: ';
+    while (true) {
+      const {err, row} = await this.conn.ormSelectOne(
+        't_dbprocess_last_idx',
+        [
+          ['net_id', this.getNetId()],
+          ['contract_address', this.getContractAddress()],
+          ['event_name', this.getEventName()],
+        ]
+      );
+      if (err) {
+        log.error(logHead + err);
+        await utils.sleep(5000 + utils.randRange(500, 1500));
+        continue;
+      }
+      if (row) {
+        return BigInt(row['last_idx']);
+      }
+    }
+    return BigInt(0);
+  }
+
+  async saveLastIdx(lastIdx) {
+    const logHead = this.getInstanceName() + ' saveLastIdx: ';
+    while (true) {
+      const {err} = await this.conn.upsert(
+        't_dbprocess_last_idx',
+        [
+          ['net_id', this.getNetId()],
+          ['contract_address', this.getContractAddress()],
+          ['event_name', this.getEventName()],
+        ],
+        [
+          ['last_idx', lastIdx.toString()],
+          ['modifytime', utils.getUtcTime()],
+        ],
+        [
+          ['net_id', this.getNetId()],
+          ['contract_address', this.getContractAddress()],
+          ['event_name', this.getEventName()],
+          ['contract_name', this.getContractName()],
+          ['last_idx', lastIdx],
+          ['createtime', utils.getUtcTime()],
+          ['modifytime', utils.getUtcTime()],
+        ]
+      );
+      if (!err) {
+        break;
+      }
+      log.error(logHead + err);
+      await utils.sleep(5000 + utils.randRange(500, 1500));
+    }
+  }
+
 }
 
 module.exports = DbEventProcess;