refactor: 重构分区索引策略，移除显式创建索引的方法并更新相关流程

bls-onoffline-backend/src/db/initializer.js

@@ -23,7 +23,6 @@ class DatabaseInitializer {
 
     // 3. Ensure Partitions for the next month
     await partitionManager.ensurePartitions(30);
-    await partitionManager.ensureIndexesForExistingPartitions();
     
     console.log('Database initialization completed successfully.');
     logger.info('Database initialization completed successfully.');

bls-onoffline-backend/src/db/partitionManager.js

@@ -26,75 +26,6 @@ class PartitionManager {
     return { startMs, endMs, partitionSuffix };
   }
 
-  async ensurePartitionIndexes(client, schema, table, partitionSuffix) {
-    const startedAt = Date.now();
-    const partitionName = `${schema}.${table}_${partitionSuffix}`;
-    const indexBase = `${table}_${partitionSuffix}`;
-
-    const indexSpecs = [
-      { name: `idx_${indexBase}_ts`, column: 'ts_ms' },
-      { name: `idx_${indexBase}_hid`, column: 'hotel_id' },
-      { name: `idx_${indexBase}_mac`, column: 'mac' },
-      { name: `idx_${indexBase}_did`, column: 'device_id' },
-      { name: `idx_${indexBase}_rid`, column: 'room_id' },
-      { name: `idx_${indexBase}_cs`, column: 'current_status' }
-    ];
-
-    for (const spec of indexSpecs) {
-      await client.query(`CREATE INDEX IF NOT EXISTS ${spec.name} ON ${partitionName} (${spec.column});`);
-    }
-
-    await client.query(`ANALYZE ${partitionName};`);
-
-    const elapsedMs = Date.now() - startedAt;
-    if (elapsedMs > 1000) {
-      logger.warn(`Partition index ensure slow`, { partitionName, elapsedMs });
-    }
-  }
-
-  async ensureIndexesForExistingPartitions() {
-    const startedAt = Date.now();
-    const client = await dbManager.pool.connect();
-    try {
-      const schema = config.db.schema;
-      const table = config.db.table;
-
-      const res = await client.query(
-        `
-          SELECT c.relname AS relname
-          FROM pg_inherits i
-          JOIN pg_class p ON i.inhparent = p.oid
-          JOIN pg_namespace pn ON pn.oid = p.relnamespace
-          JOIN pg_class c ON i.inhrelid = c.oid
-          WHERE pn.nspname = $1 AND p.relname = $2
-          ORDER BY c.relname;
-        `,
-        [schema, table]
-      );
-
-      const suffixes = new Set();
-      const pattern = new RegExp(`^${table}_(\\d{8})$`);
-      for (const row of res.rows) {
-        const relname = row?.relname;
-        if (typeof relname !== 'string') continue;
-        const match = relname.match(pattern);
-        if (!match) continue;
-        suffixes.add(match[1]);
-      }
-
-      for (const suffix of suffixes) {
-        await this.ensurePartitionIndexes(client, schema, table, suffix);
-      }
-
-      const elapsedMs = Date.now() - startedAt;
-      if (elapsedMs > 5000) {
-        logger.warn('Ensure existing partition indexes slow', { schema, table, partitions: suffixes.size, elapsedMs });
-      }
-    } finally {
-      client.release();
-    }
-  }
-
   /**
    * Ensure partitions exist for the past M days and next N days.
    * @param {number} daysAhead - Number of days to pre-create.
@@ -132,8 +63,6 @@ class PartitionManager {
           `;
           await client.query(createSql);
         }
-
-        await this.ensurePartitionIndexes(client, schema, table, partitionSuffix);
       }
       logger.info('Partition check completed.');
     } catch (err) {
@@ -185,8 +114,6 @@ class PartitionManager {
             FOR VALUES FROM (${startMs}) TO (${endMs});
           `);
         }
-
-        await this.ensurePartitionIndexes(client, schema, table, partitionSuffix);
       }
     } finally {
       client.release();