一、需求
我在数据库中建了一张表，用来保存ucloud云上的project id 和project name
models.py代码如下
#coding:utf-8
from django.db import models
class Project(models.Model):
name = models.CharField(u'项目名称',max_length=32,blank=True)
id = models.CharField(u'项目ID',max_length=32,unique=True,primary_key=True,blank=True)
create_date = models.DateTimeField(u'创建时间', auto_now_add=True)
update_date = models.DateTimeField(u'更新时间', auto_now=True)
def __unicode__(self):
return self.nameadmin.py代码如下
from django.contrib import admin
from ucloud.models import *
class ProjectAdmin(admin.ModelAdmin):
list_display = ['name','id']
admin.site.register(Project,ProjectAdmin)
二、批量导入脚本
现在，我准备了一个脚本，通过UcloudAPI获取到了线上所有的项目的项目ID和项目名称
#!/usr/bin/env python
#-*-coding:utf8-*-
from Ucloud_API.config import *
from Ucloud_API.sdk import UcloudApiClient
from models import *
def get_project_info():
ApiClient = UcloudApiClient(base_url, public_key, private_key)
Parameters = {
"Action": "GetProjectList"
}
response = ApiClient.get("/", Parameters)
ids = [
{'ProjectId': _['ProjectId'], 'ProjectName': _['ProjectName']}
for _ in response['ProjectSet']
]
return ids##脚本执行结果如下
[{'ProjectId': u'org-81', 'ProjectName': u'\u4e0a\u6d77\u522b\u6837\u7ea2\u4fe1\u606f\u6280\u672f\u6709\u9650\u516c\u53f8'}, {'ProjectId': u'org-ja1wvv', 'ProjectName': u'\u5907\u6848\u4e13\u7528'}, {'ProjectId': u'org-wrg10n', 'ProjectName': u'gitlab'}, {'ProjectId': u'org-pni2a2', 'ProjectName': u'PublicTest'}, {'ProjectId': u'org-kbxrx4', 'ProjectName': u'SPMS'}, {'ProjectId': u'org-aws3dj', 'ProjectName': u'\u5b89\u5168\u6d4b\u8bd5'}, {'ProjectId': u'org-vzfixt', 'ProjectName': u'OTA'}, {'ProjectId': u'org-et55qg', 'ProjectName': u'99\u6570\u636e\u540c\u6b65\u4e2d\u8f6c\uff0c\u672c\u9879\u76ee\u4e0e99\u5185\u7f51\u6253\u901a\uff0c\u4e0d\u5141\u8bb8\u6dfb\u52a0\u4efb\u4f55\u673a\u5668'}, {'ProjectId': u'org-ghan2t', 'ProjectName': u'Ops'}, {'ProjectId': u'org-qf4d2n', 'ProjectName': u'iPms'}]ProjectId对象表中的id字段，ProjectName对应表中的name字段。
下面是批量导入数据的代码：
#!/usr/bin/env python
#-*-coding:utf8-*-
from Ucloud_API.config import *
from Ucloud_API.sdk import UcloudApiClient
from models import *
##通过API获取数据
def get_project_info():
ApiClient = UcloudApiClient(base_url, public_key, private_key)
Parameters = {
"Action": "GetProjectList"
}
response = ApiClient.get("/", Parameters)
ids = [
{'ProjectId': _['ProjectId'], 'ProjectName': _['ProjectName']}
for _ in response['ProjectSet']
]
return ids
##批量导入数据
def update_project_info():
info = get_project_info()
pids = []
for _ in info:
projectid = _['ProjectId']
pids.append(projectid)
project = None
try:
project = Project.objects.get(pk=projectid)
except Project.DoesNotExist:
project = Project(pk=projectid)
project.name = _['ProjectName']
project.save()
# 删除本地有但是ucloud上没有的项目
projectids = [_['pk'] for _ in Project.objects.all().values('pk')]
diff_ids = list(set(projectids).difference(set(pids)))
Project.objects.filter(pk__in=diff_ids).delete()这里导入数据的思路如下：
try:
project = Project.objects.get(pk=projectid)
except Project.DoesNotExist:
project = Project(pk=projectid)先通过get方法获取对象，如果对象bu'存在，则用下面的方法创建该对象
project = Project(pk=projectid)如果对象存在，通过下面的方法更新ProjectName
project.name = _['ProjectName']
project.save()另外还有一个需要注意的地方是，数据库中的数据要更新。
例如：线上之前有一个项目aaa，但是后来被删除了，那么则需要从数据库中删除该对象。
使用以下方法；
projectids = [_['pk'] for _ in Project.objects.all().values('pk')]
diff_ids = list(set(projectids).difference(set(pids)))
Project.objects.filter(pk__in=diff_ids).delete()将数据库中的对象列表转换成集合，将线上获取到的对象列表也转换成集合，然后通过
set1.difference(set2)的方法来获取在set1中存在，但在set2中不存在的对象，然后用下面的方法删除
Project.objects.filter(pk__in=diff_ids).delete()批量导入数据还可以使用下面的方法执行
def update_project_info():
info = get_project_info()
pids = [_['ProjectId'] for _ in info]
for i in info:
Project.objects.get_or_create(id=i['ProjectId'],name=i['ProjectName'])
projectids = [_['pk'] for _ in Project.objects.all().values('pk')]
#获取数据库中存在，但线上不存在的projectid
diff_ids = list(set(projectids).difference(set(pids)))
#删除数据库中多余的数据
Project.objects.filter(pk__in=diff_ids).delete()Project.objects.get_or_create(id=i['ProjectId'],name=i['ProjectName']) get_or_create() 有就获取过来，没有就创建，用它可以避免重复，但是速度可以会慢些，因为要先尝试获取，看看有没有
三、如何执行脚本
我们可以将导入数据的方法通过问url的方式，来执行
#coding:utf-8
from django.shortcuts import render
from django.http import HttpResponse,JsonResponse
from sdkucloud import *
# Create your views here.
def index(request):
return HttpResponse('index')
def pull_project(request):
update_project_info()
return HttpResponse('OK!')编辑$APPName/urls.py
from django.conf.urls import include, url
from django.contrib import admin
from ucloud.views import *
urlpatterns = [
url(r'^$', index),
url(r'^pull_project/$', pull_project)
]
