374 lines
15 KiB
Python
374 lines
15 KiB
Python
"""HTTP API хаба (stdlib http.server, поток на запрос, соединение SQLite на запрос).
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Маршруты /agent/* — агентский токен, остальные — клиентский (specs/hub-api/spec.md)."""
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import hmac
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import json
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import logging
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import re
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import threading
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import time
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import traceback
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from http.server import BaseHTTPRequestHandler, ThreadingHTTPServer
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from pathlib import Path
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from urllib.parse import parse_qs, urlparse
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from . import backup, db, mirror, queue, relay, settings
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from .commands import CommandError
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from .paths import backups_dir as default_backups_dir
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from .queue import ClaimedError
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log = logging.getLogger(__name__)
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MAX_BODY = 16 * 1024 * 1024 # предел тела запроса, байт
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SOCKET_TIMEOUT = 60 # чтение запроса; ожидание долгого claim идёт уже после чтения тела и сокет не держит
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class ApiError(Exception):
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def __init__(self, status, error, detail=None):
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super().__init__(error)
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self.status, self.error, self.detail = status, error, detail
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class Hub:
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def __init__(self, db_path, backups_dir=None):
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self.db_path = Path(db_path)
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self.backups_dir = Path(backups_dir) if backups_dir else default_backups_dir()
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self.claim_wait = 30
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conn = self.conn()
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settings.ensure_defaults(conn)
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conn.close()
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def conn(self):
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return db.connect(self.db_path)
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def tick(self):
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"""Один шаг фонового автообновления; любой сбой логируется и не прерывает цикл."""
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conn = None
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try:
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conn = self.conn()
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queue.maybe_auto_refresh(conn)
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except Exception: # noqa: BLE001
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log.exception("автообновление: сбой тика")
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finally:
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if conn:
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conn.close()
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def make_backup(self, label):
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conn = self.conn()
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try:
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backup.make_backup(conn, self.backups_dir, label, int(settings.get(conn, "backup_keep") or 30))
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finally:
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conn.close()
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# --- обработчики: fn(hub, conn, match, query, body) -> (status, payload) ----------
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def _int(m, i=1):
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return int(m.group(i))
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def _int_param(q, name, default):
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try:
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return int(q.get(name, default))
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except (TypeError, ValueError):
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raise ApiError(400, "bad_param", f"{name}: ожидается целое число")
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def _not_found(obj, what):
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if obj is None:
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raise ApiError(404, "not_found", what)
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return obj
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def h_claim(hub, conn, m, q, body):
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deadline = time.monotonic() + hub.claim_wait
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while True:
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cmd = queue.claim(conn, body.get("agent_version"), body.get("settings_version"), body.get("last_jira_call_at"),
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backup=hub.make_backup)
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if cmd or time.monotonic() >= deadline:
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break
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time.sleep(1)
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return 200, {"command": cmd, "settings_version": settings.get(conn, "settings_version")}
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def h_agent_settings(hub, conn, m, q, body):
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return 200, settings.for_agent(conn)
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def h_agent_command(hub, conn, m, q, body):
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return 200, _not_found(queue.get_command(conn, _int(m)), "command")
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def h_agent_result(hub, conn, m, q, body):
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try:
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cmd = queue.report_result(conn, _int(m), body.get("status"), body.get("result"), body.get("error"),
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body.get("jira_calls", 0), body.get("rate_limited", 0))
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except KeyError:
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raise ApiError(404, "not_found", "command")
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except queue.NotClaimedError as e:
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raise ApiError(409, "not_claimed", str(e))
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except ValueError as e:
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raise ApiError(422, "bad_status", str(e))
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return 200, cmd
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def h_agent_state(hub, conn, m, q, body):
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with db.transaction(conn):
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out = mirror.apply_state(conn, body.get("issues") or [], body.get("links") or [], body.get("neighbor_keys") or [],
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authoritative=queue.is_full_refresh(conn, body.get("command_id")))
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if body.get("command_id"):
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queue.record_state(conn, body["command_id"], out["issues"], out["links"])
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return 200, out
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def h_known_keys(hub, conn, m, q, body):
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return 200, {"keys": mirror.known_keys(conn)}
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ISSUE_FILTERS = ("sprint", "assignee", "work_kind", "fact_status", "status", "label", "epic", "neighbor", "q")
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def h_issues(hub, conn, m, q, body):
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filters = {k: q.get(k) for k in ISSUE_FILTERS}
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return 200, {"issues": mirror.list_issues(conn, filters, _int_param(q, "limit", 50), _int_param(q, "offset", 0))}
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def h_issue(hub, conn, m, q, body):
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return 200, _not_found(mirror.get_issue(conn, m.group(1)), "issue")
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def h_note_put(hub, conn, m, q, body):
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fields = {k: v for k, v in body.items() if k != "updated_by"}
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try:
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return 200, mirror.set_note(conn, m.group(1), fields, body.get("updated_by") or "api")
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except ValueError as e:
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raise ApiError(422, "bad_note", str(e))
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def h_batches_post(hub, conn, m, q, body):
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if not body.get("title") or not isinstance(body["title"], str):
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raise ApiError(422, "bad_batch", "title — непустая строка")
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if not isinstance(body.get("author") or "api", str):
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raise ApiError(422, "bad_batch", "author — строка")
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if not isinstance(body.get("commands"), list):
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raise ApiError(422, "bad_batch", "commands — список команд")
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try:
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return 201, queue.create_batch(conn, body["title"], body.get("author") or "api", body.get("commands"))
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except CommandError as e:
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raise ApiError(422, "bad_batch", str(e))
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def h_batches_get(hub, conn, m, q, body):
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return 200, {"batches": queue.list_batches(conn, _int_param(q, "limit", 20))}
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def h_batch_get(hub, conn, m, q, body):
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return 200, _not_found(queue.batch_view(conn, _int(m)), "batch")
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def h_batch_cancel(hub, conn, m, q, body):
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try:
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return 200, queue.cancel_batch(conn, _int(m))
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except KeyError:
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raise ApiError(404, "not_found", "batch")
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def h_command_retry(hub, conn, m, q, body):
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if not isinstance(body.get("author") or "api", str):
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raise ApiError(422, "bad_retry", "author — строка")
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try:
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return 201, queue.retry_command(conn, _int(m), body.get("author") or "api")
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except KeyError:
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raise ApiError(404, "not_found", "command")
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except CommandError as e:
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raise ApiError(422, "bad_batch", str(e))
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def h_command_cancel(hub, conn, m, q, body):
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try:
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return 200, queue.cancel_command(conn, _int(m), bool(body.get("force")))
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except KeyError:
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raise ApiError(404, "not_found", "command")
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except ClaimedError as e:
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raise ApiError(409, "claimed", e.claimed_at)
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def h_refresh(hub, conn, m, q, body):
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if not isinstance(body.get("author") or "api", str):
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raise ApiError(422, "bad_refresh", "author — строка")
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keys = body.get("keys")
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if keys is not None and (not isinstance(keys, list) or not all(isinstance(k, str) and k for k in keys)):
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raise ApiError(422, "bad_refresh", "keys — список строк")
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if body.get("jql") is not None and not isinstance(body["jql"], str):
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raise ApiError(422, "bad_refresh", "jql — строка")
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if body.get("full"):
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params = {"jql": settings.get(conn, "base_jql")}
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elif body.get("jql"):
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params = {"jql": body["jql"]}
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elif body.get("keys"):
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params = {"keys": keys}
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else:
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raise ApiError(422, "bad_refresh", "нужно full, jql или keys")
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return 201, queue.create_batch(conn, "Обновление", body.get("author") or "api", [{"type": "refresh", "params": params}])
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def h_agent_get(hub, conn, m, q, body):
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return 200, queue.agent_view(conn)
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def h_sync_runs(hub, conn, m, q, body):
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rows = conn.execute("SELECT * FROM sync_run ORDER BY id DESC LIMIT ?", (_int_param(q, "limit", 20),)).fetchall()
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return 200, {"runs": [dict(r) for r in rows]}
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def h_settings_get(hub, conn, m, q, body):
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return 200, settings.get_all(conn)
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def h_settings_put(hub, conn, m, q, body):
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"""Записать настройки пакетом (всё или ничего). До записи проверяются защищённые ключи и значения
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(settings.validate): ошибка — 422, версия настроек не меняется."""
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bad = [k for k in body if k in settings.PROTECTED]
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if bad:
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raise ApiError(422, "protected", ", ".join(bad))
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for key, value in body.items():
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try:
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settings.validate(key, value)
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except ValueError as e:
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raise ApiError(422, "bad_setting", str(e))
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version = settings.get(conn, "settings_version")
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with db.transaction(conn):
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for key, value in body.items():
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version = settings.set_(conn, key, value)
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return 200, {"settings_version": version}
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ROUTES = [
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("POST", r"^/agent/claim$", h_claim, "agent"),
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("GET", r"^/agent/settings$", h_agent_settings, "agent"),
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("GET", r"^/agent/commands/(\d+)$", h_agent_command, "agent"),
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("POST", r"^/agent/commands/(\d+)/result$", h_agent_result, "agent"),
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("POST", r"^/agent/state$", h_agent_state, "agent"),
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("GET", r"^/agent/known-keys$", h_known_keys, "agent"),
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("GET", r"^/issues$", h_issues, "client"),
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("GET", r"^/issues/([^/]+)$", h_issue, "client"),
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("PUT", r"^/issues/([^/]+)/note$", h_note_put, "client"),
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("POST", r"^/batches$", h_batches_post, "client"),
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("GET", r"^/batches$", h_batches_get, "client"),
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("GET", r"^/batches/(\d+)$", h_batch_get, "client"),
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("POST", r"^/batches/(\d+)/cancel$", h_batch_cancel, "client"),
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("POST", r"^/commands/(\d+)/retry$", h_command_retry, "client"),
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("POST", r"^/commands/(\d+)/cancel$", h_command_cancel, "client"),
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("POST", r"^/refresh$", h_refresh, "client"),
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("GET", r"^/agent$", h_agent_get, "client"),
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("GET", r"^/sync-runs$", h_sync_runs, "client"),
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("GET", r"^/settings$", h_settings_get, "client"),
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("PUT", r"^/settings$", h_settings_put, "client"),
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]
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_COMPILED = [(m, re.compile(p), fn, scope) for m, p, fn, scope in ROUTES]
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class Handler(BaseHTTPRequestHandler):
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timeout = SOCKET_TIMEOUT
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hub: Hub = None # подставляется в make_server
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def do_GET(self):
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self._dispatch("GET")
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def do_POST(self):
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self._dispatch("POST")
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def do_PUT(self):
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self._dispatch("PUT")
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def log_message(self, fmt, *args): # тише стандартного: без адреса клиента
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print(f"[{self.log_date_time_string()}] {fmt % args}")
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def _auth(self, scope):
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token = (self.headers.get("Authorization") or "").removeprefix("Bearer ").strip()
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conn = self.hub.conn()
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try:
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tokens = settings.tokens(conn)
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finally:
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conn.close()
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expected = tokens["agent" if scope == "agent" else "client"]
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if not token or not hmac.compare_digest(token.encode("utf-8"), expected.encode("utf-8")):
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raise ApiError(401, "unauthorized", "неверный токен для этого маршрута")
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def _dispatch(self, method):
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url = urlparse(self.path)
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try:
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query = {k: v[0] for k, v in parse_qs(url.query).items()}
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raw_len = (self.headers.get("Content-Length") or "0").strip()
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if not raw_len.isascii() or not raw_len.isdigit():
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raise ApiError(400, "bad_content_length", "Content-Length должен быть неотрицательным целым")
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length = int(raw_len)
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if length > MAX_BODY:
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raise ApiError(413, "too_large", f"тело больше {MAX_BODY} байт")
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raw = self.rfile.read(length) if length else b""
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for route_method, rx, fn, scope in _COMPILED:
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if route_method != method:
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continue
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match = rx.match(url.path)
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if not match:
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continue
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self._auth(scope)
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try:
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body = json.loads(raw.decode("utf-8")) if raw else {}
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except ValueError as e: # битый JSON или не UTF-8
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raise ApiError(400, "bad_json", str(e))
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if not isinstance(body, dict):
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raise ApiError(400, "bad_json", "ожидается объект")
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conn = self.hub.conn()
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try:
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status, payload = fn(self.hub, conn, match, query, body)
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finally:
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conn.close()
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return self._send(status, payload)
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raise ApiError(404, "not_found", url.path)
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except ApiError as e:
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self._send(e.status, {"error": e.error, "detail": e.detail})
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except Exception as e: # noqa: BLE001 — любой сбой обработчика виден клиенту и в логе
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traceback.print_exc()
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self._send(500, {"error": "internal", "detail": str(e)})
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def _send(self, status, payload):
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data = json.dumps(payload, ensure_ascii=False, default=str).encode("utf-8")
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self.send_response(status)
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self.send_header("Content-Type", "application/json; charset=utf-8")
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self.send_header("Content-Length", str(len(data)))
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self.end_headers()
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self.wfile.write(data)
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def make_server(hub: Hub, host="0.0.0.0", port=0) -> ThreadingHTTPServer:
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handler = type("HubHandler", (Handler,), {"hub": hub})
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return ThreadingHTTPServer((host, port), handler)
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def start(hub: Hub, host="0.0.0.0", port=8790) -> tuple[ThreadingHTTPServer, threading.Event]:
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"""Создать HTTP-сервер и запустить в фоне тикер автообновления и реле общей папки.
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Обслуживание HTTP (serve_forever) запускает вызывающий; stop останавливает тикер и реле."""
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srv = make_server(hub, host, port)
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stop = threading.Event()
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def ticker():
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while not stop.wait(60):
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hub.tick()
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threading.Thread(target=ticker, daemon=True).start()
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target = "127.0.0.1" if host in ("", "0.0.0.0") else host
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threading.Thread(target=relay.Relay(hub, srv.server_port, host=target).run, args=(stop,), daemon=True).start()
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return srv, stop
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def serve(hub: Hub, host="0.0.0.0", port=8790) -> None:
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srv, stop = start(hub, host, port)
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print(f"jira-hub: http://{host}:{srv.server_port}, база {hub.db_path}", flush=True)
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try:
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srv.serve_forever()
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except KeyboardInterrupt:
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pass
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finally:
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stop.set()
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srv.server_close()
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