perf: dataset exec 缓存优化

apps/bi/migrations/0002_dataset_cache_seconds.py

@@ -0,0 +1,18 @@
+# Generated by Django 3.2.12 on 2023-05-31 01:09
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('bi', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='dataset',
+            name='cache_seconds',
+            field=models.PositiveIntegerField(blank=True, default=10, verbose_name='缓存秒数'),
+        ),
+    ]

apps/bi/models.py

@@ -8,6 +8,7 @@ class Dataset(CommonBDModel):
     description = models.TextField('描述说明', default='', blank=True)
     sql_query = models.TextField('sql查询语句', default='', blank=True)
     echart_options  = models.TextField(default='', blank=True)
+    cache_seconds = models.PositiveIntegerField('缓存秒数', default=10, blank=True)
 
 
 # class Report(CommonBDModel):

apps/bi/serializers.py

@@ -30,5 +30,4 @@ class DatasetSerializer(CustomModelSerializer):
 
 
 class DataExecSerializer(serializers.Serializer):
-    query = serializers.JSONField(label="查询字典参数", required=False, allow_null=True)
-    return_type = serializers.IntegerField(label="返回格式", required=False, default=2)
+    query = serializers.JSONField(label="查询字典参数", required=False, allow_null=True)

apps/bi/views.py

@@ -27,39 +27,42 @@ class DatasetViewSet(CustomModelViewSet):
         dt = self.get_object()
         rdata = DatasetSerializer(instance=dt).data
         query = request.data.get('query', {})
-        return_type = request.data.get('return_type', 2)
         query['r_user'] = request.user.id
         query['r_dept'] = request.user.belong_dept.id if request.user.belong_dept else ''
         results = {}
-        seconds = 10
+        results2 = {}
+        can_cache = True
+        
         if dt.sql_query:
             sql_f_ = check_sql_safe(dt.sql_query.format(**query))
             sql_f_l = sql_f_.strip(';').split(';')
+            hash_k = hash(sql_f_.strip(';'))
+            hash_v = cache.get(hash_k, None)
+            if hash_v:
+                return Response(hash_v)
             with concurrent.futures.ThreadPoolExecutor(max_workers=6) as executor:   # 多线程运行并返回字典结果
                 fun_ps = []
                 for ind, val in  enumerate(sql_f_l):
-                    res = cache.get(val, None)
-                    if isinstance(res, tuple):
-                        results[f'ds{ind}'] = format_sqldata(res[0], res[1], return_type)
-                    else:
-                        fun_ps.append((f'ds{ind}', execute_raw_sql, val))
+                    fun_ps.append((f'ds{ind}', execute_raw_sql, val))
                 # 生成执行函数
                 futures = {executor.submit(i[1], i[2]): i for i in fun_ps}
                 for future in concurrent.futures.as_completed(futures):
                     name, *_, sql_f = futures[future]  # 获取对应的键
                     try:
                         res = future.result()
-                        results[name] = format_sqldata(res[0], res[1], return_type)
-                        if seconds:
-                            cache.set(sql_f, res, seconds)
+                        results[name],  results2[name]= format_sqldata(res[0], res[1])
                     except Exception as e:
                         results[name] = 'error: ' + str(e)
+                        can_cache = False
         rdata['data'] = results
+        rdata['data2'] = results2
         if rdata['echart_options']:
             for key in results:
                 if isinstance(results[key], str):
                     raise ParseError(results[key])
             rdata['echart_options'] = format_json_with_placeholders(rdata['echart_options'], **results)
+        if results and can_cache:
+            cache.set(hash_k, rdata, dt.cache_seconds)
         return Response(rdata)
                 
     @action(methods=['get'], detail=False, perms_map={'get': '*'})

apps/utils/sql.py

@@ -17,11 +17,8 @@ def execute_raw_sql(sql: str, params=None):
         rows = cursor.fetchall()
         return columns, rows
     
-def format_sqldata(columns, rows, return_type=2):
-    if return_type == 2:
-        return [columns] + rows
-    elif return_type == 1:
-        return [dict(zip(columns, row)) for row in rows]
+def format_sqldata(columns, rows):
+    return [columns] + rows, [dict(zip(columns, row)) for row in rows]
 
 
 def query_all_dict(sql, params=None):