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"""Procedures used to work with the various bio-informatics cli
commands"""
import subprocess
from datetime import datetime
from typing import Dict
from typing import List
from typing import Optional
from uuid import uuid4
from redis.client import Redis # Used only in type hinting
from gn3.exceptions import RedisConnectionError
def compose_gemma_cmd(
gemma_wrapper_cmd: str = "gemma-wrapper",
gemma_wrapper_kwargs: Optional[Dict] = None,
gemma_kwargs: Optional[Dict] = None,
gemma_args: Optional[List] = None) -> str:
"""Compose a valid GEMMA command given the correct values"""
cmd = f"{gemma_wrapper_cmd} --json"
if gemma_wrapper_kwargs:
cmd += (" " # Add extra space between commands
" ".join([f"--{key} {val}" for key, val
in gemma_wrapper_kwargs.items()]))
cmd += " -- "
if gemma_kwargs:
cmd += " ".join([f"-{key} {val}"
for key, val in gemma_kwargs.items()])
if gemma_args:
cmd += " "
cmd += " ".join([f"{arg}" for arg in gemma_args])
return cmd
def queue_cmd(conn: Redis, job_queue: str,
cmd: str, email: Optional[str] = None) -> str:
"""Given a command CMD; (optional) EMAIL; and a redis connection CONN, queue
it in Redis with an initial status of 'queued'. The following status codes
are supported:
queued: Unprocessed; Still in the queue
running: Still running
success: Successful completion
error: Erroneous completion
Returns the name of the specific redis hash for the specific task.
"""
if not conn.ping():
raise RedisConnectionError
unique_id = ("cmd::"
f"{datetime.now().strftime('%Y-%m-%d%H-%M%S-%M%S-')}"
f"{str(uuid4())}")
for key, value in {"cmd": cmd,
"result": "",
"status": "queued"}.items():
conn.hset(key, value, unique_id)
conn.rpush(job_queue,
unique_id)
if email:
conn.hset("email",
email,
unique_id)
return unique_id
def run_cmd(cmd: str) -> Dict:
"""Run CMD and return the CMD's status code and output as a dict"""
results = subprocess.run(cmd, capture_output=True,
shell=True, check=False)
out = str(results.stdout, 'utf-8')
if results.returncode > 0: # Error!
out = str(results.stderr, 'utf-8')
return {"code": results.returncode,
"output": out}
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