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"data_set package utilities"
import datetime
import os
import json
import hashlib
from typing import List
from flask import current_app as app
from utility.configuration import get_setting
from wqflask.database import parse_db_url, database_connection
def geno_mrna_confidentiality(ob):
with database_connection() as conn, conn.cursor() as cursor:
cursor.execute(
"SELECT confidentiality, "
f"AuthorisedUsers FROM {ob.type}Freeze WHERE Name = %s",
(ob.name,)
)
result = cursor.fetchall()
if len(result) > 0 and result[0]:
return True
def query_table_timestamp(dataset_type: str):
"""function to query the update timestamp of a given dataset_type"""
# computation data and actions
with database_connection() as conn, conn.cursor() as cursor:
fetch_db_name = parse_db_url(get_setting(app, "SQL_URI"))
cursor.execute(
"SELECT UPDATE_TIME FROM "
"information_schema.tables "
f"WHERE TABLE_SCHEMA = '{fetch_db_name[3]}' "
f"AND TABLE_NAME = '{dataset_type}Data'")
date_time_obj = cursor.fetchone()[0]
if not date_time_obj:
date_time_obj = datetime.datetime.now()
return date_time_obj.strftime("%Y-%m-%d %H:%M:%S")
def generate_hash_file(dataset_name: str, dataset_type: str, dataset_timestamp: str, samplelist: str):
"""given the trait_name generate a unique name for this"""
string_unicode = f"{dataset_name}{dataset_timestamp}{samplelist}".encode()
md5hash = hashlib.md5(string_unicode)
return md5hash.hexdigest()
def cache_dataset_results(dataset_name: str, dataset_type: str, samplelist: List, query_results: List):
"""function to cache dataset query results to file
input dataset_name and type query_results(already processed in default dict format)
"""
# data computations actions
# store the file path on redis
table_timestamp = query_table_timestamp(dataset_type)
samplelist_as_str = ",".join(samplelist)
file_name = generate_hash_file(dataset_name, dataset_type, table_timestamp, samplelist_as_str)
file_path = os.path.join(app.config["TMPDIR"], f"{file_name}.json")
with open(file_path, "w") as file_handler:
json.dump(query_results, file_handler)
def fetch_cached_results(dataset_name: str, dataset_type: str, samplelist: List):
"""function to fetch the cached results"""
table_timestamp = query_table_timestamp(dataset_type)
samplelist_as_str = ",".join(samplelist)
file_name = generate_hash_file(dataset_name, dataset_type, table_timestamp, samplelist_as_str)
file_path = os.path.join(app.config["TMPDIR"], f"{file_name}.json")
try:
with open(file_path, "r") as file_handler:
return json.load(file_handler)
except Exception:
pass
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