diff options
| -rw-r--r-- | gn_libs/http_logging.py | 4 | ||||
| -rw-r--r-- | gn_libs/jobs/__init__.py | 7 | ||||
| -rw-r--r-- | gn_libs/jobs/jobs.py | 90 | ||||
| -rw-r--r-- | gn_libs/jobs/launcher.py | 12 | ||||
| -rw-r--r-- | gn_libs/jobs/migrations.py | 24 | ||||
| -rw-r--r-- | gn_libs/logging.py | 2 | ||||
| -rw-r--r-- | gn_libs/mysqldb.py | 4 |
7 files changed, 131 insertions, 12 deletions
diff --git a/gn_libs/http_logging.py b/gn_libs/http_logging.py index 79660a8..c65e0a4 100644 --- a/gn_libs/http_logging.py +++ b/gn_libs/http_logging.py @@ -38,7 +38,7 @@ class SilentHTTPHandler(logging.Handler): # fire-and-forget self._send(payload) - except Exception: + except Exception:# pylint: disable=[broad-exception-caught] # absolute silence pass @@ -52,5 +52,5 @@ class SilentHTTPHandler(logging.Handler): ) with urllib.request.urlopen(req, timeout=5) as resp: resp.read() # ignore body - except Exception: + except Exception:# pylint: disable=[broad-exception-caught] pass diff --git a/gn_libs/jobs/__init__.py b/gn_libs/jobs/__init__.py index d6e4ce3..7927f8d 100644 --- a/gn_libs/jobs/__init__.py +++ b/gn_libs/jobs/__init__.py @@ -1,10 +1,15 @@ """This package deals with launching and managing background/async jobs.""" from .migrations import run_migrations from .jobs import (job, + kill_job, launch_job, + delete_job, + delete_jobs, initialise_job, push_to_stream, - update_metadata) + update_metadata, + jobs_by_external_id, + delete_expired_jobs) def init_app(flask_app): """Initialise the migrations for flask""" diff --git a/gn_libs/jobs/jobs.py b/gn_libs/jobs/jobs.py index ec1c3a8..bccddd5 100644 --- a/gn_libs/jobs/jobs.py +++ b/gn_libs/jobs/jobs.py @@ -60,7 +60,34 @@ def job(conn: DbConnection, job_id: Union[str, uuid.UUID], fulldetails: bool = F return _job -def __save_job__(conn: DbConnection, the_job: dict, expiry_seconds: int) -> dict: +def jobs_by_external_id(conn: DbConnection, external_id: Union[str, uuid.UUID]) -> tuple[dict, ...]: + """Fetch jobs by their external IDs.""" + with _cursor(conn) as cursor: + cursor.execute( + "SELECT jeids.external_id, jobs.* FROM jobs_external_ids AS jeids " + "INNER JOIN jobs ON jeids.job_id=jobs.job_id " + "WHERE jeids.external_id=? " + "ORDER BY jobs.created DESC", + (str(external_id),)) + _jobs = {row["job_id"]: {**dict(row), "metadata": {}} for row in cursor.fetchall()} + _jobs_ids = tuple(_job["job_id"] for _job in _jobs.values()) + + _paramstr = ", ".join(["?"] * len(_jobs_ids)) + cursor.execute( + f"SELECT * FROM jobs_metadata WHERE job_id IN ({_paramstr})", + _jobs_ids) + for row in cursor.fetchall(): + _jobs[row["job_id"]]["metadata"][row["metadata_key"]] = row["metadata_value"] + + return tuple(_jobs.values()) + + +def __save_job__( + conn: DbConnection, + the_job: dict, + expiry_seconds: int, + external_id: str = "" +) -> dict: """Save the job to database.""" with _cursor(conn) as cursor: @@ -75,6 +102,11 @@ def __save_job__(conn: DbConnection, the_job: dict, expiry_seconds: int) -> dict "expires": (expires and expires.isoformat()), "command": the_job["command"] }) + if bool(external_id.strip()): + cursor.execute( + "INSERT INTO jobs_external_ids(job_id, external_id) " + "VALUES(:job_id, :external_id)", + {"job_id": job_id, "external_id": external_id.strip()}) metadata = tuple({"job_id": job_id, "key": key, "value": value} for key,value in the_job["metadata"].items()) if len(metadata) > 0: @@ -92,12 +124,22 @@ def initialise_job(# pylint: disable=[too-many-arguments, too-many-positional-ar command: list, job_type: str, extra_meta: Optional[dict] = None, - expiry_seconds: int = _DEFAULT_EXPIRY_SECONDS_ + expiry_seconds: int = _DEFAULT_EXPIRY_SECONDS_, + external_id: Optional[Union[str, uuid.UUID]] = None ) -> dict: """Initialise the job and put the details in a SQLite3 database.""" if extra_meta is None: extra_meta = {} + def __process_external_id__(_id: Optional[Union[str, uuid.UUID]]) -> str: + if isinstance(_id, uuid.UUID): + return str(_id) + + if _id is not None and bool(_id.strip()): + return str(_id.strip()) + return "" + + _ext_id = __process_external_id__(external_id) _job = { "job_id": job_id, "command": shlex.join(command), @@ -106,10 +148,11 @@ def initialise_job(# pylint: disable=[too-many-arguments, too-many-positional-ar "status": "pending", "percent": 0, "job-type": job_type, - **extra_meta + **extra_meta, + **({"external_id": _ext_id} if bool(_ext_id) else {}) } } - return __save_job__(conn, _job, expiry_seconds) + return __save_job__(conn, _job, expiry_seconds, _ext_id) def output_file(jobid: uuid.UUID, outdir: Path, stream: str) -> Path: @@ -211,3 +254,42 @@ def push_to_stream( "stream": stream_name, "content": new_content }) + + +def delete_jobs( + conn: DbConnection, job_ids: tuple[Union[uuid.UUID, str], ...]) -> None: + """Delete the given jobs.""" + with _cursor(conn) as cursor: + _paramstr = ", ".join(["?"] * len(job_ids)) + _params = tuple(str(job_id) for job_id in job_ids) + cursor.execute( + f"DELETE FROM jobs_standard_outputs WHERE job_id IN ({_paramstr})", + _params) + cursor.execute( + f"DELETE FROM jobs_metadata WHERE job_id IN ({_paramstr})", + _params) + cursor.execute( + f"DELETE FROM jobs_external_ids WHERE job_id IN ({_paramstr})", + _params) + cursor.execute(f"DELETE FROM jobs WHERE job_id IN ({_paramstr})", + _params) + + +def delete_job(conn: DbConnection, job_id: Union[uuid.UUID, str]) -> None: + """Delete a specific job.""" + return delete_jobs(conn, (job_id,)) + + +def delete_expired_jobs(conn: DbConnection) -> None: + """Delete all jobs that are expired.""" + with _cursor(conn) as cursor: + cursor.execute( + "SELECT job_id FROM jobs WHERE datetime(expires) <= datetime()") + return delete_jobs( + conn, tuple(row["job_id"] for row in cursor.fetchall())) + + +def kill_job(conn: DbConnection, job_id: Union[uuid.UUID, str]) -> None: + """Send a request to kill the job.""" + return update_metadata( + conn, job_id, "hangup_request", datetime.now(timezone.utc).isoformat()) diff --git a/gn_libs/jobs/launcher.py b/gn_libs/jobs/launcher.py index d565f9e..f915b81 100644 --- a/gn_libs/jobs/launcher.py +++ b/gn_libs/jobs/launcher.py @@ -3,6 +3,7 @@ import os import sys import time import shlex +import signal import logging import argparse import traceback @@ -34,8 +35,13 @@ def run_job(conn, job, outputs_directory: Path): encoding="utf-8", stdout=outfile, stderr=errfile) as process): + jobs.update_metadata(conn, job_id, "status", "running") while process.poll() is None: - jobs.update_metadata(conn, job_id, "status", "running") + _job = jobs.job(conn, job_id, True) + if bool(_job["metadata"].get("hangup_request")): + process.send_signal(signal.SIGHUP) + jobs.update_metadata(conn, job_id, "status", "stopped") + break; jobs.push_to_stream(conn, job_id, "stdout", stdout_in.read()) jobs.push_to_stream(conn, job_id, "stderr", stderr_in.read()) time.sleep(1) @@ -51,7 +57,9 @@ def run_job(conn, job, outputs_directory: Path): if exit_status == 0: jobs.update_metadata(conn, job_id, "status", "completed") else: - jobs.update_metadata(conn, job_id, "status", "error") + _job = jobs.job(conn, job_id, True) + if _job["metadata"]["status"] != "stopped": + jobs.update_metadata(conn, job_id, "status", "error") logger.info("exiting job manager/launcher") return exit_status diff --git a/gn_libs/jobs/migrations.py b/gn_libs/jobs/migrations.py index 0c9825b..2af16ae 100644 --- a/gn_libs/jobs/migrations.py +++ b/gn_libs/jobs/migrations.py @@ -60,6 +60,29 @@ def __create_table_jobs_output_streams__(cursor: DbCursor): """) +def __create_table_jobs_external_ids__(cursor: DbCursor): + """Create the jobs_external_ids table. + + The purpose of this table is to allow external systems to link background + jobs to specific users/events that triggered them. What the external IDs are + is irrelevant to the background jobs system here, and should not affect how + the system works.""" + cursor.execute( + """ + CREATE TABLE IF NOT EXISTS jobs_external_ids( + job_id TEXT PRIMARY KEY NOT NULL, + external_id TEXT NOT NULL, + FOREIGN KEY(job_id) REFERENCES jobs(job_id) + ON UPDATE CASCADE ON DELETE RESTRICT + ) WITHOUT ROWID + """) + cursor.execute( + """ + CREATE INDEX IF NOT EXISTS idx_tbl_jobs_external_ids_cols_external_id + ON jobs_external_ids(external_id) + """) + + def run_migrations(sqlite_url: str): """Run the migrations to setup the background jobs database.""" with (connection(sqlite_url) as conn, @@ -67,3 +90,4 @@ def run_migrations(sqlite_url: str): __create_table_jobs__(curr) __create_table_jobs_metadata__(curr) __create_table_jobs_output_streams__(curr) + __create_table_jobs_external_ids__(curr) diff --git a/gn_libs/logging.py b/gn_libs/logging.py index 28b4b41..952d30f 100644 --- a/gn_libs/logging.py +++ b/gn_libs/logging.py @@ -1,3 +1,4 @@ +"""Generalised setup for logging for Genenetwork systems.""" import os import logging @@ -19,7 +20,6 @@ def __log_gunicorn__(app: Flask) -> Flask: def __log_dev__(app: Flask) -> Flask: """Set up logging for the development environment.""" root_logger = logging.getLogger() - root_logger.addHandler(stderr_handler) root_logger.setLevel( app.config.get("LOG_LEVEL", app.config.get("LOGLEVEL", "WARNING"))) diff --git a/gn_libs/mysqldb.py b/gn_libs/mysqldb.py index 3f6390e..0239f7e 100644 --- a/gn_libs/mysqldb.py +++ b/gn_libs/mysqldb.py @@ -3,7 +3,7 @@ import logging import contextlib from logging import Logger from urllib.parse import urlparse -from typing import Any, Iterator, Protocol, Callable +from typing import Any, Union, Iterator, Protocol, Callable import MySQLdb as mdb from MySQLdb.cursors import Cursor @@ -45,7 +45,7 @@ def __parse_ssl_mode_options__(val: str) -> str: return _val -def __parse_ssl_options__(val: str) -> dict: +def __parse_ssl_options__(val: str) -> Union[dict, bool]: if val.strip() == "" or val.strip().lower() == "false": return False |