184 lines
7.0 KiB
Python
184 lines
7.0 KiB
Python
from __future__ import annotations
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import datetime, hashlib, os, pathlib, shutil, time
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#from datetime import datetime, time, timedelta
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from fastapi import APIRouter, Body, Depends, File, Form, Header, HTTPException, Query, Response, status, UploadFile
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from pydantic import BaseModel, EmailStr, Field
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from typing import Dict, List, Optional, Set, Union
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from app.lib_general import log, logging
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from app.config import settings
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from app.db_sql import sql_insert, sql_update, sql_insert_or_update, sql_select, sql_delete, redis_lookup_id_random
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# from .api_crud import delete_obj_template, get_obj_template, get_obj_li_template, patch_obj_template, post_obj_template
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from app.models.hosted_file_models import Hosted_File_Base
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from app.models.response_models import mk_resp
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router = APIRouter()
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# ### BEGIN ### API Hosted File Route ### upload_files() ###
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# This just needs to return the currect model for a hosted_file
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# Everything else seems to be working well
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# Should this also do something with meta data and updating the DB?
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@router.post('/upload_files/')
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async def upload_files(
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file_list: List[UploadFile] = File(...),
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account_id: str = Form(..., min_length=1, max_length=22),
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# filename: Optional[str] = Form(...),
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for_object_type: str = Form(...),
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for_object_id: str = Form(..., min_length=1, max_length=22),
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check_allowed_extension: bool = False,
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x_account_id: str = Header(..., ),
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return_obj: bool = True,
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by_alias: bool = True,
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exclude_unset: bool = True,
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):
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log.setLevel(logging.WARNING) # DEBUG, INFO, WARNING, ERROR, EXCEPTION, CRITICAL
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log.debug(locals())
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account_id_random = account_id # This is for the account random str ID
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if account_id := redis_lookup_id_random(record_id_random=account_id, table_name='account'): pass
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else:
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return mk_resp(data=None, status_code=400)
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for_object_type = for_object_type
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for_object_id_random = for_object_id # This is for the object random str ID
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if for_object_id := redis_lookup_id_random(record_id_random=for_object_id, table_name=for_object_type): pass
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else:
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return mk_resp(data=None, status_code=400)
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# file_info_li = await save_file_li(file_list, for_object_type, for_object_id, for_object_id_random)
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file_info_list = []
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for file_obj in file_list:
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file_info = await save_file(file=file_obj, account_id=account_id, account_id_random=account_id_random, for_object_type=for_object_type, for_object_id=for_object_id, for_object_id_random=for_object_id_random, check_allowed_extension=check_allowed_extension)
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file_info_list.append(file_info)
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log.debug(file_info_list)
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return mk_resp(data=file_info_list)
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# ### END ### API Hosted File Route ### upload_files() ###
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# ### BEGIN ### API Hosted File Route ### save_file() ###
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async def save_file(
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file: UploadFile,
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account_id: int,
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account_id_random: str,
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for_object_type: str,
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for_object_id: int,
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for_object_id_random: str,
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check_allowed_extension: bool = False,
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):
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log.setLevel(logging.WARNING) # DEBUG, INFO, WARNING, ERROR, EXCEPTION, CRITICAL
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log.debug(locals())
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hosted_file_path = '/home/scott/tmp/hosted_file_dev/'
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log.debug(shutil.disk_usage(hosted_file_path))
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log.debug(dir(file))
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log.debug(f'{file.filename}')
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file_info = {}
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file_info['saved'] = None
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file_info['for_object_type'] = for_object_type
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file_info['for_object_id'] = for_object_id
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file_info['for_object_id_random'] = for_object_id_random
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file_info['filename'] = file.filename
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file_info['extension'] = guess_file_extension(filename=file.filename)
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if check_allowed_extension:
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if allowed_file_extension:
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file_info['extension_allowed'] = True
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else:
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file_info['extension_allowed'] = False
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file_info['saved'] = False
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return file_info
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else:
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file_info['extension_allowed'] = None
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# There is a difference between Content-Type and MIME type.
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# https://stackoverflow.com/questions/3452381/whats-the-difference-of-contenttype-and-mimetype
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file_info['content_type'] = file.content_type # might also include charset or other parameters
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# file_info['mimetype'] = file.mimetype # This may need to be filled in a different way?
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file.file.seek(0, os.SEEK_END)
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file_size = file.file.tell()
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file.file.seek(0) # The file will not properly save if seek is not reset to 0.
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log.debug(file_size)
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file_info['size'] = file_size
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file_hash = await get_file_object_hash(file.file)
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log.debug(file_hash)
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file_info['hash_sha256'] = file_hash
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# 16384 bytes is the default
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# 4096 8192 16384 32768 65536 131072 262144 524288 1048576 bytes
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buffer_size = 524288
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#f_src = open(file_src, 'rb')
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f_src = file.file # Don't need to do open(file_src, 'rb') since it is already "open"
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#file_dest = f'{hosted_file_path}{file.filename}'
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file_dest = f'{hosted_file_path}{file_hash}.file'
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existing_file_check = pathlib.Path(file_dest)
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if existing_file_check.exists():
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file_info['already_exists'] = True
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file_info['copy_timer'] = 0
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else:
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file_info['already_exists'] = False
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f_dest = open(file_dest, 'wb')
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timer_start = time.process_time()
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shutil.copyfileobj(f_src, f_dest, buffer_size)
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timer_end = time.process_time()
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elapsed_time = timer_end - timer_start
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log.debug(f'Elapsed time: {elapsed_time}')
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file_info['copy_timer'] = elapsed_time
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file_info['saved'] = True
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log.debug(shutil.disk_usage(hosted_file_path))
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return file_info
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# ### END ### API Hosted File Route ### save_file() ###
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# ### BEGIN ### API Hosted File Route ### get_file_object_hash() ###
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async def get_file_object_hash(file_object:File):
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#log.setLevel(logging.WARNING) # DEBUG, INFO, WARNING, ERROR, EXCEPTION, CRITICAL
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log.debug(locals())
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# 4096 bytes is the current block size on my workstation and Linode server
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# 4096 8192 16384 32768 65536 131072 262144 524288 1048576 bytes
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block_size = 131072
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hash_value = hashlib.sha256()
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timer_start = time.process_time()
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for chunk in iter(lambda: file_object.read(block_size), b""):
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hash_value.update(chunk)
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file_hash = hash_value.hexdigest()
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file_object.seek(0) # The file will not properly save if seek is not reset to 0.
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timer_end = time.process_time()
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elapsed_time = timer_end - timer_start
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log.debug(f'Elapsed time: {elapsed_time}')
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return file_hash
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# ### END ### API Hosted File Route ### get_file_object_hash() ###
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# ### BEGIN ### API Hosted File Route ### guess_file_extension() ###
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def guess_file_extension(filename:str):
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return filename.rsplit('.', 1)[1].lower()
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# ### END ### API Hosted File Route ### guess_file_extension() ###
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# ### BEGIN ### API Hosted File Route ### allowed_file_extension() ###
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def allowed_file_extension(extension:str):
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return extension.lower() in app.config['ALLOWED_EXTENSIONS']
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# ### END ### API Hosted File Route ### allowed_file_extension() ###
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