custom_file_storage

以fast_fdfs作为存储后端

环境搭建fdfs

sudo docker run -d --network=host --name tracker -v /var/fdfs/tracker:/var/fdfs delron/fastdfs tracker

sudo docker run -d --network=host --name storage -e TRACKER_SERVER=192.168.80.131:22122 -v /var/fdfs/storage:/var/fdfs delron/fastdfs storage

客户端安装
https://github.com/JaceHo/fdfs_client-py

• 克隆到本地修改

• 修改文件，安装时会报错

setup.py 注释两行
 'ext_modules': [Extension('fdfs_client.sendfile',
                              sources=['fdfs_client/sendfilemodule.c'])],

fdfs_client-py/fdfs_client/storage_client.py  注释以下行
from fdfs_client.sendfile import *

如果在使用时报关于字符编码错可以在 fdfs_client-py/fdfs_client/utils.py

def read(self, filenames):
        if isinstance(filenames, basestring):
            filenames = [filenames]

        read_ok = []
        for filename in filenames:
            try:
                #文件打开编码为utf-8
                with open(filename,encoding='utf-8') as fp:
                    self.readfp(fp)
            except IOError as e:
                continue
            else:
                read_ok.append(filename)

        return read_ok

安装 fdfs_client
python setup.py install

客户端配置文件（客户端会调用配置文件得到client对象）
client.conf

# connect timeout in seconds
# default value is 30s
connect_timeout = 30

# network timeout in seconds
# default value is 30s
network_timeout = 60

# the base path to store log files
# base_path=FastDFS客户端存放日志文件的目录

# tracker_server can ocur more than once, and tracker_server format is
#  "host:port", host can be hostname or ip address
tracker_server = fdfs_server:22122

# standard log level as syslog, case insensitive, value list:
### emerg for emergency
### alert
### crit for critical
### error
### warn for warning
### notice
### info
### debug
log_level = info

# if use connection pool
# default value is false
# since V4.05
use_connection_pool = false

# connections whose the idle time exceeds this time will be closed
# unit: second
# default value is 3600
# since V4.05
connection_pool_max_idle_time = 3600

# if load FastDFS parameters from tracker server
# since V4.05
# default value is false
load_fdfs_parameters_from_tracker = false

# if use storage ID instead of IP address
# same as tracker.conf
# valid only when load_fdfs_parameters_from_tracker is false
# default value is false
# since V4.05
use_storage_id = false

# specify storage ids filename, can use relative or absolute path
# same as tracker.conf
# valid only when load_fdfs_parameters_from_tracker is false
# since V4.05
storage_ids_filename = storage_ids.conf

# HTTP settings
http.tracker_server_port = 80

# use "#include" directive to include HTTP other settiongs
##include http.conf

测试：fdfs_client

test.py
from fdfs_client.client import Fdfs_client
with open('./0.jpg','rb') as content:
    client = Fdfs_client('./client.conf')
    ret = client.upload_by_buffer(content.read())
    print(ret)

{
  'Group name': 'group1',
  'Local file name': ''',
  'Storage IP': '192.168.80.131',
  'Remote file_id': 'group1/M00/00/03/rBCzi10HvhOAbpotAAAi00HB9mU322.jpg',
  'Uploaded size': '8.00KB',
  'Status': 'Upload successed.'
}

存储后端

from django.conf import settings
from django.core.files.storage import Storage
from django.utils.deconstruct import deconstructible
from fdfs_client.client import Fdfs_client

@deconstructible
class FastDFSStorage(Storage):
    def __init__(self,base_url=None,client_conf=None):
        if base_url is None:
            base_url = settings.FDFS_URL
        self.base_url = base_url
        if client_conf is None:
            client_conf = settings.FDFS_CLIENT_CONF
        self.client_conf = client_conf
    def _save(self,name,content):
        #截取文件后缀
        suffix = name.split('.')[1]
        client = Fdfs_client(self.client_conf)
        ret = client.upload_by_buffer(content.read(),suffix)
        # print(ret)
        if ret.get("Status") != "Upload successed.":
            raise Exception("upload file faild")
        file_name = ret.get('Remote file_id')
        return file_name


    def exists(self,name):
        return False

    def url(self,name):
        # print(self.base_url+name)
        http_url = self.base_url + name
        print(http_url)
        return http_url

setting.py配置

FDFS_URL = "http://192.168.80.131:8888/"
DEFAULT_FILE_STORAGE = 'fastdfs.storage.FastDFSStorage'
FDFS_CLIENT_CONF = os.path.join(BASE_DIR,'index/client.conf')

model.py

class Avatar(models.Model):
    name = models.CharField(max_length=32)
      #upload_to 自定义了存储后端此处填什么没有影响
    avatar = models.FileField(upload_to='icon',verbose_name='头像')

admin.py

admin.site.register(Avatar)

image.png

views.py

def show_image(request):
    if request.method == 'GET':
        icons = models.Icon.objects.all()
        url = []
        for icon in icons:
            url.append(icon.icon.url)
            print(url)
        return HttpResponse("<image src='{}'>".format(url[0]))
        # return render(request,'show_image.html',{'url':url})