Return a file from in-memory buffer like io.BytesIO() using FastAPI14.06.22

https://cloudbytes.dev/snippets/received-return-a-file-from-in-memory-buffer-using-fastapi

Anonymous

import os,io,time
import fastapi
import hashlib
import requests_async as requests
import sortedcontainers
import urllib.parse
import jwt, time
from datetime import datetime
from PIL import Image
from fastapi_utils.cbv import cbv
from api.utils import mssql_connect as mcon
from api.utils import couch, csv 
from api.models import customer
from fastapi.responses import ORJSONResponse, Response,  StreamingResponse
from api import config

router = fastapi.APIRouter()

router = fastapi.APIRouter()
@cbv(router)
class Img:
  @router.get("/img/{_type}/{_size}/{_cat}/{_file}", response_class=ORJSONResponse)
  async def img(self, request: fastapi.Request, _type:str='', _size:str='', _cat:str='', _file:str=''):
    # http://127.0.0.1:8081/img/canvas
    # http://sapif.salamander-jewelry.net/style/name
    pic_path = '/mnt/Tamuz8/pictures/'
    path = '{}/{}/{}'.format(pic_path,_cat,_file)
    xy_size = (int(_size),int(_size))
    if(os.path.isfile(path)):
      i = Image.open(path)
      i.thumbnail(xy_size, Image.ANTIALIAS)
      pw, ph = i.size #a tulp asignment
      c = Image.new('RGB', xy_size,'white') #create a canvas anyhow
      cw, ch = c.size 
      offset = (int((cw-pw)/2),int((ch-ph)/2)) #get the offset beeteen canvas and img

try:
        if i.mode == 'RGBA':
          c.paste(i,offset,mask=i)
        else:
          c.paste(i,offset)
      except Exception as e:
        pass

o = io.BytesIO()

try: 
        c.save(o, format='PNG',dpi=(300,300))
      except Exception as e:
        c = Image.new('RGB',size,'white')
        c.save(o, format='PNG',dpi=(300,300))
      o.seek(0)
    return StreamingResponse(o, media_type="image/png")

async def get_data(self):
    data = sortedcontainers.SortedDict()
    return data

14.06.22

Anonymous

Return a file from in-memory buffer like io.BytesIO() using FastAPI14.06.22

Information Epoch 1714157038