FROM fedora:32
RUN dnf install -y python-pip   && dnf clean all   && pip install fastapi uvicorn aiofiles
WORKDIR /srv
CMD ["uvicorn", "main:app", "--reload"]

$ podman build -t fastapi .
$ podman images
REPOSITORY TAG IMAGE ID CREATED SIZE
localhost/fastapi latest 01e974cabe8b 18 seconds ago 326 MB

from fastapi import FastAPI
 
app = FastAPI()
 
@app.get("/")
async def root():
  return {"message": "Hello Fedora Magazine!"}

$ podman run --rm -v $PWD:/srv:z -p 8000:8000 --name fastapi -d fastapi
$ curl http://127.0.0.1:8000
{"message":"Hello Fedora Magazine!"

$ podman stop fastapi

$ dnf history | tail --lines=+3 > history.txt

from fastapi import FastAPI
from pydantic import BaseModel
 
app = FastAPI()
 
class DnfTransaction(BaseModel):
  id: int
  command: str
  date: str

import aiofiles
 
from fastapi import FastAPI
from pydantic import BaseModel
 
app = FastAPI()
 
class DnfTransaction(BaseModel):
  id: int
  command: str
  date: str
 
 
async def read_history():
  transactions = []
  async with aiofiles.open("history.txt") as f:
    async for line in f:
      transactions.append(DnfTransaction(
        id=line.split("|")[0].strip(" "),
        command=line.split("|")[1].strip(" "),
        date=line.split("|")[2].strip(" ")))
  return transactions

@app.get("/")
async def read_root():
  return await read_history()

$ curl http://127.0.0.1:8000 | python -m json.tool
[
{
"id": 103,
"command": "update",
"date": "2020-05-25 08:35"
},
{
"id": 102,
"command": "update",
"date": "2020-05-23 15:46"
},
{
"id": 101,
"command": "update",
"date": "2020-05-22 11:32"
},
....
]