spiff-arena/spiffworkflow-backend/bin/data_migrations/run_all.py

117 lines
4.0 KiB
Python

import time
from flask import current_app
from spiffworkflow_backend import create_app
from spiffworkflow_backend.data_migrations.version_1_3 import VersionOneThree
from spiffworkflow_backend.data_migrations.version_2 import Version2
from spiffworkflow_backend.models.db import db
from spiffworkflow_backend.models.human_task import HumanTaskModel
from spiffworkflow_backend.models.process_instance import ProcessInstanceModel
from sqlalchemy import update
# simple decorator to time the func
# https://stackoverflow.com/a/11151365/6090676, thank you
def benchmark_log_func(func):
"""
decorator to calculate the total time of a func
"""
def st_func(*args, **kwargs):
t1 = time.time()
r = func(*args, **kwargs)
t2 = time.time()
# __qualname__, i know you use it every day. but if not, it's the function name prefixed with any qualifying class names
current_app.logger.debug(f"Function={func.__qualname__}, Time={t2 - t1}")
return r
return st_func
@benchmark_log_func
def put_serializer_version_onto_numeric_track() -> None:
old_busted_serializer_version = "1.0-spiffworkflow-backend"
update_query = (
update(ProcessInstanceModel)
.where(ProcessInstanceModel.spiff_serializer_version == old_busted_serializer_version)
.values(spiff_serializer_version="1")
)
db.session.execute(update_query)
db.session.commit()
@benchmark_log_func
def remove_duplicate_human_task_rows() -> None:
result = (
db.session.query(HumanTaskModel.process_instance_id, HumanTaskModel.task_guid, db.func.count().label("ct"))
.group_by(HumanTaskModel.task_guid, HumanTaskModel.process_instance_id)
.having(db.func.count() > 1)
.all()
)
# Process the result as needed
rows_to_delete = []
for row in result:
human_tasks = (
HumanTaskModel.query.filter_by(task_guid=row.task_guid).order_by(HumanTaskModel.created_at_in_seconds.desc()).all()
)
rows_to_delete = rows_to_delete + human_tasks[1:]
for row in rows_to_delete:
db.session.delete(row)
db.session.commit()
@benchmark_log_func
def backfill_task_guid_for_human_tasks() -> None:
update_query = (
update(HumanTaskModel).where(HumanTaskModel.task_guid == None).values(task_guid=HumanTaskModel.task_id) # noqa: E711
)
db.session.execute(update_query)
db.session.commit()
def all_potentially_relevant_process_instances() -> list[ProcessInstanceModel]:
return ProcessInstanceModel.query.filter(
ProcessInstanceModel.spiff_serializer_version < Version2.version(),
ProcessInstanceModel.status.in_(ProcessInstanceModel.non_terminal_statuses()),
).all()
@benchmark_log_func
def run_version_1() -> None:
VersionOneThree().run() # make this a class method
@benchmark_log_func
def run_version_2(process_instances: list[ProcessInstanceModel]) -> None:
Version2.run(process_instances)
def main() -> None:
start_time = time.time()
app = create_app()
end_time = time.time()
with app.app_context():
current_app.logger.debug(f"data_migrations/run_all::create_app took {end_time - start_time} seconds")
start_time = time.time()
put_serializer_version_onto_numeric_track()
remove_duplicate_human_task_rows()
backfill_task_guid_for_human_tasks()
process_instances = all_potentially_relevant_process_instances()
potentially_relevant_instance_count = len(process_instances)
current_app.logger.debug(f"Found potentially relevant process_instances: {potentially_relevant_instance_count}")
if potentially_relevant_instance_count > 0:
run_version_1()
# this will run while using the new per instance on demand data migration framework
# run_version_2(process_instances)
end_time = time.time()
current_app.logger.debug(
f"done running data migrations in ./bin/data_migrations/run_all.py. took {end_time - start_time} seconds"
)
if __name__ == "__main__":
main()