185 lines
7.7 KiB
Python
185 lines
7.7 KiB
Python
from django.shortcuts import render
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from apps.utils.viewsets import CustomModelViewSet
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from rest_framework.decorators import action
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from rest_framework.response import Response
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from apps.bi.models import Dataset
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from apps.bi.serializers import DatasetSerializer, DatasetCreateUpdateSerializer, DataExecSerializer
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from django.apps import apps
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from rest_framework import serializers
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import concurrent.futures
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from django.core.cache import cache
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from apps.utils.sql import execute_raw_sql, format_sqldata
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from apps.bi.services import check_sql_safe, format_json_with_placeholders
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from rest_framework.exceptions import ParseError
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from rest_framework.generics import get_object_or_404
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# Create your views here.
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class DatasetViewSet(CustomModelViewSet):
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queryset = Dataset.objects.all()
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serializer_class = DatasetSerializer
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create_serializer_class = DatasetCreateUpdateSerializer
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update_serializer_class = DatasetCreateUpdateSerializer
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search_fields = ['name', 'code']
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ordering = ['name', 'code', 'id']
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def get_object(self):
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"""
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Returns the object the view is displaying.
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You may want to override this if you need to provide non-standard
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queryset lookups. Eg if objects are referenced using multiple
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keyword arguments in the url conf.
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"""
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queryset = self.filter_queryset(self.get_queryset())
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# Perform the lookup filtering.
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lookup_url_kwarg = self.lookup_url_kwarg or self.lookup_field
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assert lookup_url_kwarg in self.kwargs, (
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'Expected view %s to be called with a URL keyword argument '
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'named "%s". Fix your URL conf, or set the `.lookup_field` '
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'attribute on the view correctly.' %
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(self.__class__.__name__, lookup_url_kwarg)
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)
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filter_kwargs = {self.lookup_field: self.kwargs[lookup_url_kwarg]}
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try:
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obj = get_object_or_404(queryset, **filter_kwargs)
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except:
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filter_kwargs = {'code': self.kwargs[lookup_url_kwarg]}
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obj = get_object_or_404(queryset, **filter_kwargs)
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# May raise a permission denied
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self.check_object_permissions(self.request, obj)
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return obj
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@action(methods=['post'], detail=True, perms_map={'post': 'dataset.exec'}, serializer_class=DataExecSerializer, cache_seconds=0, logging_methods=[])
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def exec(self, request, pk=None):
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"""执行sql查询
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执行sql查询支持code
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"""
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dt: Dataset = self.get_object()
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rdata = DatasetSerializer(instance=dt).data
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xquery = request.data.get('query', {})
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is_test = request.data.get('is_test', False)
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raise_exception = request.data.get('raise_exception', True)
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xquery['r_user'] = request.user.id
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xquery['r_dept'] = request.user.belong_dept.id if request.user.belong_dept else ''
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results = {}
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results2 = {}
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can_cache = True
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query = dt.default_param
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if dt.sql_query:
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if is_test:
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query.update(dt.test_param)
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else:
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query.update(xquery)
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try:
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sql_f_ = check_sql_safe(dt.sql_query.format(**query))
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except KeyError as e:
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raise ParseError(f'需指定查询参数_{str(e)}')
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sql_f_strip = sql_f_.strip(';')
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sql_f_l = sql_f_strip.split(';')
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hash_k = hash(sql_f_strip)
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hash_v = cache.get(hash_k, None)
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if hash_v:
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return Response(hash_v)
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# 多线程运行并返回字典结果
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with concurrent.futures.ThreadPoolExecutor(max_workers=6) as executor:
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fun_ps = []
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for ind, val in enumerate(sql_f_l):
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fun_ps.append((f'ds{ind}', execute_raw_sql, val))
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# 生成执行函数
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futures = {executor.submit(i[1], i[2]): i for i in fun_ps}
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for future in concurrent.futures.as_completed(futures):
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name, *_, sql_f = futures[future] # 获取对应的键
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try:
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res = future.result()
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results[name], results2[name] = format_sqldata(
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res[0], res[1])
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except Exception as e:
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if raise_exception:
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raise ParseError(f'查询异常：{str(e)}')
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else:
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results[name] = 'error: ' + str(e)
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can_cache = False
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rdata['data'] = results
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rdata['data2'] = results2
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if rdata['echart_options'] and not rdata['echart_options'].startswith('function'):
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for key in results:
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if isinstance(results[key], str):
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raise ParseError(results[key])
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rdata['echart_options'] = format_json_with_placeholders(
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rdata['echart_options'], **results)
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if results and can_cache:
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cache.set(hash_k, rdata, dt.cache_seconds)
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return Response(rdata)
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@action(methods=['get'], detail=False, perms_map={'get': '*'})
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def base(self, request, pk=None):
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all_models = apps.get_models()
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rdict = {}
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# 遍历所有模型
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for model in all_models:
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# 获取表名称
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table_name = model._meta.db_table
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rdict[table_name] = []
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# 获取字段信息
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fields = model._meta.get_fields()
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for field in fields:
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rdict[table_name].append(
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{'name': field.name, 'type': field.get_internal_type()})
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return Response(rdict)
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# class ReportViewSet(CustomModelViewSet): # 暂时不用了
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# queryset = Report.objects.all()
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# serializer_class = ReportSerializer
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# search_fields = ['name', 'code']
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# @action(methods=['post'], detail=True, perms_map={'post': 'report.exec'}, serializer_class=DataExecSerializer, cache_seconds=0)
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# def exec(self, request, pk=None):
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# """执行报表查询
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# 执行报表查询并用于返回前端渲染
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# """
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# report = self.get_object()
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# rdata = ReportSerializer(instance=report).data
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# query = request.data.get('query', {})
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# return_type = request.data.get('return_type', 2)
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# query['r_user'] = request.user.id
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# query['r_dept'] = request.user.belong_dept.id if request.user.belong_dept else ''
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# datasets = report.datasets.all()
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# results = {}
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# seconds = 10 # 缓存秒数
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# with concurrent.futures.ThreadPoolExecutor(max_workers=6) as executor: # 多线程运行并返回字典结果
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# fun_ps = []
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# for ds in datasets:
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# sql_query = ds.sql_query
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# if sql_query:
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# sql_f = check_sql_safe(sql_query.format(**query)) # 有风险先这样处理一下
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# res = cache.get(sql_f, None)
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# if isinstance(res, tuple):
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# results[ds.name] = format_sqldata(res[0], res[1], return_type)
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# else:
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# fun_ps.append((ds.name, execute_raw_sql, sql_f))
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# # 生成执行函数
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# futures = {executor.submit(i[1], i[2]): i for i in fun_ps}
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# for future in concurrent.futures.as_completed(futures):
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# name, *_, sql_f = futures[future] # 获取对应的键
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# try:
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# res = future.result()
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# results[name] = format_sqldata(res[0], res[1], return_type)
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# if seconds:
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# cache.set(sql_f, res, seconds)
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# except Exception as e:
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# results[name] = 'error: ' + str(e)
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# rdata['data'] = results
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# return Response(rdata)
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