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bvandeusenandClaude Opus 5.5 dadec4e355
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feat(syslog): a source's lines to read and search, on its page, its host's and its SNMP device's, and over MCP (#6000)
- /plugins/syslog/sources/<id>: the lines newest first, loading as you
  scroll, filtered by severity and worse, app, text and time, with day
  dividers and times to the second in the reader's zone.
- The Syslog page links each source and shows its lines in the last hour.
- A Syslog panel on a host's page and an SNMP device's: the newest lines of
  the sources bound to it or at its address.
- MCP: list_syslog_sources and search_syslog (source, host, text, severity
  and worse, app, range, paging by next_before).
- Shared: escape_like moves to steward/core/like.py and cut_middle to the
  MCP shaping module, replacing four inline copies; |when takes seconds=.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-19 06:05:52 -04:00

75 lines
2.7 KiB
Python

"""The audit log: who changed what in Steward, including changes made through MCP."""
from __future__ import annotations
import json
from sqlalchemy import or_, select
from steward.core.like import escape_like
from steward.models.audit import AuditEvent
from steward.models.users import UserRole
from ._audit import mcp_username
from ._shape import age_s, bounded, clamp_limit, db_session, iso, lookback
async def list_audit_events(action: str = "", user: str = "", entity_type: str = "",
range: str = "7d", limit: int = 50) -> dict:
"""Changes recorded in Steward's audit log, newest first.
action: a prefix of the action name, e.g. "monitor." or "ansible.run";
empty for all.
user: a username, exactly; "system" for automated changes. Includes the
changes that user made through MCP, which are recorded as "<user> via MCP".
entity_type: e.g. "monitor", "host", "alert_rule"; empty for all.
range: "1h", "6h", "24h", "7d" (default) or "30d".
limit: default 50, max 500.
Answers "what changed before this broke?": line an event's `at` up against
a monitor's down_since or an alert's since.
"""
since, key = lookback(range)
limit = clamp_limit(limit, 50, 500)
stmt = (select(AuditEvent).where(AuditEvent.timestamp >= since)
.order_by(AuditEvent.timestamp.desc()).limit(limit + 1))
if action:
stmt = stmt.where(AuditEvent.action.like(escape_like(action) + "%", escape="\\"))
if user:
stmt = stmt.where(or_(AuditEvent.username == user,
AuditEvent.username == mcp_username(user)))
if entity_type:
stmt = stmt.where(AuditEvent.entity_type == entity_type)
async with db_session() as db:
rows = list((await db.execute(stmt)).scalars())
def _detail(raw):
if not raw:
return None
try:
return json.loads(raw)
except ValueError:
return raw[:500]
events = [
{
"at": iso(e.timestamp),
"age_s": age_s(e.timestamp),
"user": e.username,
"action": e.action,
"entity_type": e.entity_type,
"entity_id": e.entity_id,
"detail": _detail(e.detail_json),
}
for e in rows
]
out = {"range": key, **bounded(events, limit, key="events")}
if out["truncated"]:
out["total"] = None
out["more"] = (f"More than {limit} events in range. Pass a larger `limit` (max 500), "
"a shorter `range`, or filter by `action`, `user` or `entity_type`.")
return out
def register(register_tool) -> None:
register_tool(list_audit_events, role=UserRole.viewer, read_only=True)