306 lines
12 KiB
Python
306 lines
12 KiB
Python
from __future__ import annotations
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import datetime, hashlib, os, pathlib, shutil, time
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from fastapi import File, UploadFile
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from typing import Dict, List, Optional, Set, Union
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from pydantic import BaseModel, EmailStr, Field, PrivateAttr, ValidationError, validator
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from app.db_sql import redis_lookup_id_random, sql_insert, sql_select, sql_update
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from app.lib_general import log, logging
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from app.models.hosted_file_models import Hosted_File_Base
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# ### BEGIN ### API Hosted File Methods ### create_hosted_file_obj() ###
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def create_hosted_file_obj(hosted_file_obj_new:Hosted_File_Base):
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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_obj_data = hosted_file_obj_new.dict(by_alias=False, exclude_defaults=False, exclude_unset=True, exclude={'created_on', 'updated_on'})
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hosted_file_obj_data = hosted_file_obj_new.dict(by_alias=False, exclude_defaults=False, exclude_unset=True, exclude={'saved', 'already_exists', 'copy_timer', 'created_on', 'updated_on'})
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if hosted_file_obj_in_result := sql_insert(data=hosted_file_obj_data, table_name='hosted_file', rm_id_random=True, id_random_length=8): pass
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else:
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return False
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log.debug(hosted_file_obj_in_result)
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hosted_file_id = hosted_file_obj_in_result
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log.debug(f'Returning the new hosted_file_id: {hosted_file_id}')
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return hosted_file_id
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# ### END ### API Hosted File Methods ### create_hosted_file_obj() ###
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# ### BEGIN ### API Hosted File Methods ### load_hosted_file_obj() ###
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def load_hosted_file_obj(
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hosted_file_id: int|str,
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limit: int = 1000,
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by_alias: bool = True,
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exclude_unset: bool = True,
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model_as_dict: bool = False,
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enabled: str = 'enabled', # enabled, disabled, all
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inc_hosted_file_link_list: bool = False,
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) -> Hosted_File_Base|dict|bool:
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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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if hosted_file_id := redis_lookup_id_random(record_id_random=hosted_file_id, table_name='hosted_file'): pass
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else: return False
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if hosted_file_rec := sql_select(table_name='v_hosted_file', record_id=hosted_file_id):
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log.setLevel(logging.DEBUG) # DEBUG, INFO, WARNING, ERROR, EXCEPTION, CRITICAL
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log.debug(hosted_file_rec)
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else:
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return False
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try:
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hosted_file_obj = Hosted_File_Base(**hosted_file_rec)
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log.setLevel(logging.DEBUG) # DEBUG, INFO, WARNING, ERROR, EXCEPTION, CRITICAL
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log.debug(hosted_file_obj)
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except ValidationError as e:
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log.error(e.json())
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return False
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# if inc_x:
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# x_id = hosted_file_rec.get('x_id', None)
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# if x_obj_result := load_x_obj(x_id=x_id):
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# x_obj = x_obj_result
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# hosted_file_obj.x = x_obj
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# else: hosted_file_obj.x = None
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if model_as_dict:
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return hosted_file_obj.dict(by_alias=by_alias, exclude_unset=exclude_unset) # pylint: disable=no-member
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else:
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return hosted_file_obj
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# ### END ### API Hosted File Methods ### load_hosted_file_obj() ###
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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, extension_list:list):
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return extension.lower() in extension_list # app.config['ALLOWED_EXTENSIONS']
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# ### END ### API Hosted File Route ### allowed_file_extension() ###
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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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link_to_type: str,
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link_to_id: int,
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link_to_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: dict = {}
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file_info['saved'] = None
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file_info['link_to_type'] = link_to_type
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file_info['link_to_id'] = link_to_id
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file_info['link_to_id_random'] = link_to_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(extension=file_info['extension'], extension_list=['jpg','png','webp']):
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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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file_info['saved'] = True
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else:
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file_info['already_exists'] = False
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try:
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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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except Exception as e:
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log.exception('*** An exception happened. ***')
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log.exception(repr(e))
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log.exception('***')
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log.exception(str(e))
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log.exception('^^^ exception ^^^')
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file_info['copy_timer'] = 0
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file_info['saved'] = False
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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 ### hosted_file_link() ###
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def create_hosted_file_link(
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account_id: int|str,
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hosted_file_id: int|str,
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link_to_type: str,
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link_to_id: int|str,
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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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if account_id := redis_lookup_id_random(record_id_random=account_id, table_name='account'): pass
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else: return False
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if hosted_file_id := redis_lookup_id_random(record_id_random=hosted_file_id, table_name='hosted_file'): pass
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else: return False
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if link_to_id := redis_lookup_id_random(record_id_random=link_to_id, table_name=link_to_type): pass
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else: return False
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hosted_file_link_data: dict = {}
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hosted_file_link_data['account_id'] = account_id
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hosted_file_link_data['hosted_file_id'] = hosted_file_id
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hosted_file_link_data['link_to_type'] = link_to_type # Should this be renamed to "link_to_type" for clarity?
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hosted_file_link_data['link_to_id'] = link_to_id # Should this be renamed to "link_to_id" for clarity?
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# NOTE: Currently sql_insert does not handel all successful inserts correctly. If there is not an autonum ID then it will return 0 as the ID.
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if hosted_file_link_data_in_result := sql_insert(data=hosted_file_link_data, table_name='hosted_file_link', id_random_length=0): pass # This should be improved
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else:
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# This should be improved
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log.warning('Because the hosted_file_link table does not have a primary autonum this check is incorrect even when successful.')
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log.warning('Something may have gone wrong while trying to create the hosted_file_link record.')
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log.warning('The hosted_file_link was probably created fine though.')
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return False
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log.debug(hosted_file_link_data_in_result)
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return True
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# ### END ### API Hosted File Route ### hosted_file_link() ###
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# ### BEGIN ### API Hosted File Methods ### get_hosted_file_rec_list() ###
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# This needs to be improved. Currently it does not really do anything.
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# Need to allow for list by account? Probably have the same actual hosted file have two hosted_file entries if it was uploaded for two separate accounts.
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def get_hosted_file_rec_list(
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for_obj_type: str,
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for_obj_id: str,
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limit: int = 1000,
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enabled: str = 'enabled', # enabled, disabled, all
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) -> list|bool:
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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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if for_obj_id := redis_lookup_id_random(record_id_random=for_obj_id, table_name=for_obj_type): pass
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else: return False
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data = {}
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data[f'{for_obj_type}_id'] = for_obj_id
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# data['for_obj_type'] = for_obj_type
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sql_obj_type_id = f'`tbl`.{for_obj_type}_id = :{for_obj_type}_id'
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if enabled in ['enabled', 'disabled', 'all']:
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if enabled == 'enabled':
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data['enable'] = True
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sql_enabled = f'AND `tbl`.enable = :enable'
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elif enabled == 'disabled':
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data['enable'] = False
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sql_enabled = f'AND `tbl`.enable = :enable'
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elif enabled == 'all':
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sql_enabled = ''
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if limit:
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data['limit'] = limit
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sql_limit = f'LIMIT :limit'
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else:
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sql_limit = ''
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sql = f"""
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SELECT `tbl`.id AS 'hosted_file_id', `tbl`.id_random AS 'hosted_file_id_random'
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FROM `hosted_file` AS `tbl`
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WHERE
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{sql_obj_type_id}
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{sql_enabled}
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ORDER BY `tbl`.created_on DESC, `tbl`.updated_on DESC
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{sql_limit};
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"""
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if hosted_file_rec_li_result := sql_select(data=data, sql=sql, as_list=True):
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hosted_file_rec_li = hosted_file_rec_li_result
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else:
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hosted_file_rec_li = []
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log.setLevel(logging.DEBUG) # DEBUG, INFO, WARNING, ERROR, EXCEPTION, CRITICAL
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log.debug(hosted_file_rec_li_result)
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return hosted_file_rec_li
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# ### END ### API Hosted File Methods ### get_hosted_file_rec_list() ###
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