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PacketStation/server/packetstation/domain/pipeline.py
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spencermandClaude Fable 5.1 5a4174e0c2
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Phase 5: Supervisor and Stall screens, weld map, heat table, clock and CO verification
The shop at parity with the old build. Supervisor screen (department chips, CO headline, numbers, Change orders
on hold, station grid with clocks and CO tags, boards) and Stall screen (station picker, hero, My packets,
Submitted). Shop steps on the packet page: assign with station, welder picker and stamp; pull back; Start, Pause,
Resume; Submit with a PIN signature and the missing steps as links; review with Send to Q.C., Return to station
and Skip Q.C. route; a lead's read-only review. Weld map (pdf.js viewer with pan, pinch, zoom, full screen; marks
with leader lines; weld sheet; weld record with field CAS; carried marks). Heat map (heat table placed, dragged,
sized, removed; legacy amber tags; borrowed heat map read-only). Checklist tab with templates from settings.
VOID stamps on voided pages. Change orders: CO-n labels, supervisor verify with signature, approval copies the
heat table to the new sheet and the BOM merge keeps the shop's values. Server clock of record with VISUAL ticket
hours beside it. Presence per packet over SSE. Migration 0006 (bfx, bfy, carried_from, checklist_templates).
New endpoints /api/shop/board, /api/shop/stations, /api/shop/stall, /api/departments/{code}/people.

Tests: policy oracle for every shop action, role and status; clock arithmetic; concurrent inserts; CO apply;
frontend geometry, heat table, clock, checklist, weld sheet, screens; seven Playwright scenarios. Docs updated.

Co-Authored-By: Claude Fable 5.1 <[email protected]>
2026-10-16 22:46:56 -06:00

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"""The write pipeline: every packet write is one transaction through `packet_write`.
Inside one transaction: lock the packet row (SELECT ... FOR UPDATE), build the policy's PacketState, check the
caller's expected step (409 stale_step), check the packet version when If-Match is given (409 version_conflict),
ask the policy (403 or 400 with the decision's code), take the signature when the rule needs one, hand the caller a
`Write`, then bump the version, write the packet_log row, the transition row and its side effects, the audit row and
the NOTIFY. The policy decides; a handler never does.
A wrong signature secret is the one failure that commits: the step-up failure count and the attempt row must stay,
so the three-strike rule works. Nothing else has been written at that point.
Child-row endpoints build on the same pieces: `check_row_version`, `next_counter`, `apply_field_cas`, `parse_if_match`.
"""
from __future__ import annotations
import hashlib
import hmac
import logging
from collections.abc import Iterator, Mapping, Sequence
from contextlib import contextmanager
from dataclasses import dataclass, field
from typing import Any, Literal
from fastapi import Request
from psycopg.types.json import Jsonb
from pydantic import BaseModel, Field
from .. import audit, events, policy
from ..api import deps
from ..api.errors import ApiError
from ..auth import signatures
from ..auth.signatures import Signature
from ..policy.engine import MSG_FILED
from ..settings import SecretFileError
from ..text import LIMITS, clean_opt, reason_ok
from . import packets
log = logging.getLogger(__name__)
A = policy.Action
MSG_STALE = "Someone else already took this step."
MSG_VERSION = "The packet changed since you opened it. Reload and try again."
MSG_ROW = "Someone else changed this line. Reload and try again."
MSG_FIELD = "Someone else changed this since you opened it."
# Codes that answer 400 (the UI asks for input and retries); every other refusal answers 403.
ASK_CODES = frozenset({"it_reason_required", "reason_required"})
COUNTERS = {"weld": "next_weld_no", "heat": "next_heat_no", "page": "next_page_no", "co": "next_co_no"}
# The packet_log label per action, when the caller gives none.
LABELS: dict[policy.Action, str] = {
A.SEND_TO_WAREHOUSE: "Sent to warehouse",
A.RELEASE_TO_SHOP: "Sent straight to the shop",
A.SEND_DRAFT_TO_QC: "Sent straight to Q.C.",
A.WH_SEND_BACK: "Sent back to Clerical",
A.RETURN_TO_CLERICAL: "Sent back to Clerical",
A.WH_RELEASE: "Released to supervisor",
A.SEND_BACK_TO_WAREHOUSE: "Sent back to the warehouse",
A.ASSIGN: "Sent to a station",
A.UNASSIGN: "Taken off the station",
A.PULL_BACK: "Pulled back from the station",
A.START: "Work started",
A.SUBMIT: "Submitted to supervisor",
A.RETURN_TO_STATION: "Returned to the station",
A.SEND_TO_QC: "Sent to Q.C.",
A.ROUTE_FROM_REVIEW: "Routed to another department",
A.QC_REJECT: "Q.C. rejected",
A.QC_ACCEPT: "Q.C. accepted",
A.QC_ACCEPT_AND_ROUTE: "Q.C. accepted and routed",
A.FILE: "Filed in the data book",
A.ADMIN_REOPEN: "Reopened by IT",
A.EDIT_HEADER: "Details changed",
A.EDIT_DRAWING_REF: "Drawing number changed",
A.EDIT_DEPT: "Department changed",
A.MOVE_UNIT: "Moved to another unit",
A.EDIT_WOS: "Work orders changed",
A.EDIT_DOCUMENT_SET: "Drawing attached by hand",
A.DOC_ADD: "Document added",
A.DOC_REMOVE: "Document removed",
A.SET_VCLOSED: "Job closed in VISUAL",
A.SET_DATABOOK_AT: "Data book date set",
A.REMOVE: "Packet removed",
}
AUDIT_ACTIONS: dict[policy.Action, str] = {A.REMOVE: "packet.removed", A.MOVE_UNIT: "packet.moved"}
# ---------------------------------------------------------------- request bodies
class SignBody(BaseModel):
factor: Literal["pin", "password"]
secret: str = Field(max_length=1024)
class Expect(BaseModel):
status: str = Field(max_length=20)
dept: str = Field(max_length=10)
# ---------------------------------------------------------------- the Write object
@dataclass
class Write:
conn: Any # the request connection, inside one transaction
principal: deps.Principal # the session principal
policy_principal: policy.Principal
packet: dict[str, Any] # the packets row, locked FOR UPDATE
state: policy.PacketState
decision: policy.Decision
signature: Signature | None
version: int # the new version after the bump (set on exit)
action: policy.Action
extra: Mapping[str, Any]
it_reason: str | None # the cleaned IT reason, kept only when the admin bypass was used
request: Request
label: str | None = None
note: str | None = None
fields: list[str] = field(default_factory=list)
detail: dict[str, Any] = field(default_factory=dict)
transitioned: bool = False
transition_id: int | None = None
noop: bool = False
from_status: str = ""
from_dept: str = ""
children: Any = None # packets.Children loaded under the lock (full=False)
more_logs: list[tuple[str, str | None]] = field(default_factory=list)
@property
def id(self) -> int:
return int(self.packet["id"])
@property
def user_id(self) -> Any:
return self.principal.user_id
@property
def rule(self) -> policy.Rule:
return policy.RULES[self.action]
def log(self, action_label: str, note: str | None = None) -> None:
"""Override the packet_log label (and note) for this write."""
self.label = action_label
if note is not None:
self.note = note
def log_also(self, action_label: str, note: str | None = None) -> None:
"""One more packet_log line for this write, written after the main one (same user, no signature)."""
self.more_logs.append((action_label, note))
def changed(self, *names: str) -> None:
"""Record the fields this write changed (they go into the audit detail)."""
for n in names:
if n not in self.fields:
self.fields.append(n)
def skip(self) -> None:
"""Nothing changed: no version bump, no log, audit or event."""
self.noop = True
def check(self, action: policy.Action, extra: Mapping[str, Any] | None = None) -> policy.Decision:
"""Check one more action on the same locked packet (for a write that touches several rules)."""
d = policy.check(self.policy_principal, self.state, action, extra=extra or self.extra, it_reason=self.it_reason)
refuse(d)
return d
# ---------------------------------------------------------------- helpers for callers
def refuse(decision: policy.Decision) -> None:
"""Raise the API error for a failed policy decision."""
if decision.ok:
return
status = 400 if decision.code in ASK_CODES else 403
raise ApiError(status, decision.code, decision.why)
def current_of(row: Mapping[str, Any]) -> dict[str, Any]:
return {"status": str(row["status"]), "dept": str(row["dept_code"]), "version": int(row["version"])}
def parse_if_match(request: Request) -> int | None:
"""The If-Match header as a plain integer (quotes and a W/ prefix are tolerated), or None when absent."""
raw = request.headers.get("if-match")
if raw is None:
return None
text = raw.strip().removeprefix("W/").strip().strip('"')
try:
return int(text)
except ValueError:
raise ApiError(400, "bad_if_match", "If-Match must be a version number.") from None
def require_if_match(request: Request) -> int:
v = parse_if_match(request)
if v is None:
raise ApiError(428, "if_match_required", "Send If-Match with the version you started from.")
return v
def check_row_version(row: Mapping[str, Any] | None, if_match: int | None, *, current: Any = None) -> None:
"""409 row_conflict with the current row when its row_version differs from If-Match.
`current` is what goes into the error (defaults to the row itself, JSON-shaped by the caller if needed).
A missing If-Match is 428 if_match_required.
"""
if row is None:
raise ApiError(404, "not_found", "No such line.")
if if_match is None:
raise ApiError(428, "if_match_required", "Send If-Match with the version you started from.")
if int(row["row_version"]) != int(if_match):
raise ApiError(
409, "row_conflict", MSG_ROW, extra={"current": jsonable(current if current is not None else row)}
)
def next_counter(conn: Any, packet_id: int, kind: str, n: int = 1) -> int:
"""Take `n` consecutive numbers from a packet counter (weld, heat, page, co); returns the first one.
Call it inside packet_write: the packet row is locked FOR UPDATE, so concurrent writers serialise on it.
Outside a pipeline the UPDATE itself takes the row lock for the rest of the transaction.
"""
col = COUNTERS.get(kind)
if col is None:
raise ValueError(f"unknown counter {kind!r}")
if n < 1:
raise ValueError("n must be at least 1")
row = conn.execute(
f"UPDATE packets SET {col} = {col} + %s WHERE id = %s RETURNING {col} - %s", # noqa: S608 (col from COUNTERS)
(n, packet_id, n),
).fetchone()
if row is None:
raise ApiError(404, "not_found", "No such packet.")
return int(row[0])
def _norm(value: Any) -> Any:
"""Comparable form of a value: uuid and dates as text, numbers as numbers, '' as None."""
if value is None or value == "":
return None
if isinstance(value, bool | int | float | str):
return value
return str(value)
def apply_field_cas(
current: Mapping[str, Any], set_: Mapping[str, Any], base: Mapping[str, Any] | None
) -> dict[str, Any]:
"""Field-level compare-and-set. For every key in set_ that base also has, base must equal current.
Conflicts raise 409 field_conflict with `current: {key: value}` for the conflicting keys. Keys without a base
entry are written without a check (the old merge3: mine wins). Returns the keys whose value actually changes.
"""
base = base or {}
conflicts = {k: current.get(k) for k in set_ if k in base and _norm(base[k]) != _norm(current.get(k))}
if conflicts:
raise ApiError(409, "field_conflict", MSG_FIELD, extra={"current": jsonable(conflicts)})
return {k: v for k, v in set_.items() if _norm(v) != _norm(current.get(k))}
def jsonable(value: Any) -> Any:
from fastapi.encoders import jsonable_encoder
return jsonable_encoder(value)
# ---------------------------------------------------------------- the pipeline
@contextmanager
def packet_write(
d: deps.Db,
p: deps.Principal,
packet_id: int,
action: policy.Action,
*,
request: Request,
extra: Mapping[str, Any] | None = None,
it_reason: str | None = None,
sign: SignBody | None = None,
expect: Expect | None = None,
sign_content: Any = None,
if_match: int | None = None,
also: Sequence[policy.Action] = (),
require_sign: bool | None = None,
policy_principal: policy.Principal | None = None,
) -> Iterator[Write]:
"""One packet write. See the module docstring for the order of steps.
`also` lists more actions the same write needs (each is checked; the first action is the one logged).
`require_sign` overrides the rule's signature: False skips it (removing a hand-attached drawing), True forces it.
"""
conn = d.conn
extra = dict(extra or {})
pp = policy_principal or packets.policy_principal_for(conn, p)
failure: ApiError | None = None
with conn.transaction():
row = packets.load_row(conn, packet_id, lock=True)
if row is None:
raise ApiError(404, "not_found", "No such packet.")
ch = packets.load_children(conn, row, full=False)
state = packets.state_from(row, ch)
if expect is not None and (expect.status != row["status"] or expect.dept != row["dept_code"]):
raise ApiError(409, "stale_step", MSG_STALE, extra={"current": current_of(row)})
extra.setdefault("holder_name", packets.holder_text(state, ch))
rule = policy.RULES[action]
if not state.removed and state.status == "filed" and not rule.filed_ok:
# Say "filed" rather than "wrong status" or "give an IT reason": nothing but a reopen changes it.
raise ApiError(403, "filed", MSG_FILED)
cleaned_it = reason_ok(it_reason)
decision = policy.check(pp, state, action, extra=extra, it_reason=it_reason)
refuse(decision)
bypass = decision.admin_bypass
for other in also:
dd = policy.check(pp, state, other, extra=extra, it_reason=it_reason)
refuse(dd)
bypass = bypass or dd.admin_bypass
if if_match is not None and int(if_match) != int(row["version"]):
raise ApiError(409, "version_conflict", MSG_VERSION, extra={"current": current_of(row)})
w = Write(
conn=conn,
principal=p,
policy_principal=pp,
packet=row,
state=state,
decision=decision,
signature=None,
version=int(row["version"]),
action=action,
extra=extra,
it_reason=cleaned_it if bypass else None,
request=request,
from_status=str(row["status"]),
from_dept=str(row["dept_code"]),
children=ch,
)
meaning = decision.signature
needs = bool(meaning) if require_sign is None else require_sign
if needs:
if sign is None:
raise ApiError(
400,
"signature_required",
"This step needs your signature.",
extra={"meaning": meaning or LABELS.get(action, str(action))},
)
try:
w.signature = signatures.sign(
conn,
deps.directory_of(request),
p.actor,
factor=sign.factor,
secret=sign.secret,
action=f"packet.{action}",
meaning=meaning,
packet_id=packet_id,
subject_type="packet",
subject_id=packet_id,
content=sign_content
if sign_content is not None
else {"action": str(action), "packet_id": packet_id, "version": int(row["version"])},
ip=p.ip,
settings=deps.settings_of(request),
)
except ApiError as e:
failure = e # commit the step-up failure records, then raise below
if failure is None:
yield w
_finish(w)
if failure is not None:
raise failure
def _finish(w: Write) -> None:
if w.noop:
return
if w.rule.transition and not w.transitioned:
apply_transition(w)
conn = w.conn
w.version = int(
conn.execute("UPDATE packets SET version = version + 1 WHERE id = %s RETURNING version", (w.id,)).fetchone()[0]
)
after = conn.execute("SELECT status::text, dept_code FROM packets WHERE id = %s", (w.id,)).fetchone()
status, dept = str(after[0]), str(after[1])
label = w.label or LABELS.get(w.action, str(w.action).replace("_", " ").capitalize())
note = clean_opt(w.note, LIMITS["note"]) if w.note else None
sig_id = w.signature.id if w.signature else None
conn.execute(
"INSERT INTO packet_log (packet_id, by, by_name, role, action, note, it_reason, signature_id, transition_id)"
" VALUES (%s, %s, %s, %s, %s, %s, %s, %s, %s)",
(
w.id,
w.user_id,
w.principal.user["display_name"],
w.principal.role_snapshot,
label,
note,
w.it_reason,
sig_id,
w.transition_id,
),
)
for extra_label, extra_note in w.more_logs:
conn.execute(
"INSERT INTO packet_log (packet_id, by, by_name, role, action, note, it_reason)"
" VALUES (%s, %s, %s, %s, %s, %s, %s)",
(
w.id,
w.user_id,
w.principal.user["display_name"],
w.principal.role_snapshot,
extra_label,
clean_opt(extra_note, LIMITS["note"]) if extra_note else None,
w.it_reason,
),
)
detail: dict[str, Any] = {"from": w.from_status, "to": status, "dept": dept}
if w.from_dept != dept:
detail["from_dept"] = w.from_dept
if w.fields:
detail["fields"] = w.fields
if note:
detail["note"] = note
if sig_id:
detail["signature_id"] = sig_id
detail.update(w.detail)
audit.append(
conn,
action=AUDIT_ACTIONS.get(w.action, f"packet.{w.action}"),
user_id=w.user_id,
session_id=w.principal.session_id,
role_snapshot=w.principal.role_snapshot,
subject_type="packet",
subject_id=w.id,
packet_id=w.id,
detail=detail,
it_reason=w.it_reason,
ip=w.principal.ip,
)
events.publish(conn, {"event": "changed", "packet_id": w.id, "version": w.version, "status": status, "dept": dept})
# ---------------------------------------------------------------- transitions and their side effects
CLOCK_STOP = (
"clock_elapsed_ms = clock_elapsed_ms + CASE WHEN clock_running_since IS NULL THEN 0"
" ELSE (extract(epoch FROM (now() - clock_running_since)) * 1000)::bigint END, clock_running_since = NULL"
)
def _reason(w: Write) -> str | None:
return reason_ok(w.extra.get("reason"))
def _note(w: Write) -> str | None:
return clean_opt(w.extra.get("note"), LIMITS["note"])
def _wh_incoming(w: Write) -> None:
w.conn.execute("UPDATE packet_wh SET closed_at = now() WHERE packet_id = %s AND closed_at IS NULL", (w.id,))
w.conn.execute(
"INSERT INTO packet_wh (packet_id, stage, by, note) VALUES (%s, 'incoming', %s, %s)",
(w.id, w.user_id, _note(w)),
)
def _wh_close(w: Write) -> None:
w.conn.execute("UPDATE packet_wh SET closed_at = now() WHERE packet_id = %s AND closed_at IS NULL", (w.id,))
def _open_stage(w: Write, dept: str) -> None:
w.conn.execute("INSERT INTO packet_stages (packet_id, dept_code) VALUES (%s, %s)", (w.id, dept))
def _close_stage(w: Write, qc_snapshot: Any = None) -> None:
w.conn.execute(
f"UPDATE packet_stages SET {CLOCK_STOP}, closed_at = now(), qc_snapshot = coalesce(%s, qc_snapshot)," # noqa: S608
" row_version = row_version + 1 WHERE packet_id = %s AND closed_at IS NULL",
(None if qc_snapshot is None else Jsonb(jsonable(qc_snapshot)), w.id),
)
def _stage_update(w: Write, assignments: str, params: Sequence[Any] = ()) -> None:
w.conn.execute(
f"UPDATE packet_stages SET {assignments}, row_version = row_version + 1" # noqa: S608 (fixed fragments)
" WHERE packet_id = %s AND closed_at IS NULL",
(*params, w.id),
)
def _open_inspection(w: Write) -> dict[str, Any] | None:
return packets.one(w.conn, "SELECT * FROM qc_inspections WHERE packet_id = %s AND closed_at IS NULL", (w.id,))
def _close_inspection(w: Write, insp: Mapping[str, Any] | None, dept: str) -> None:
"""Close the open inspection; when it had a result, keep it in qc_history."""
if insp is None:
return
w.conn.execute(
"UPDATE qc_inspections SET closed_at = now(), row_version = row_version + 1 WHERE id = %s", (insp["id"],)
)
if insp.get("result"):
w.conn.execute(
"INSERT INTO qc_history (packet_id, result, inspector, note, dept_code, snapshot)"
" VALUES (%s, %s, %s, %s, %s, %s)",
(w.id, insp["result"], insp.get("inspector"), insp.get("result_note"), dept, Jsonb(jsonable(dict(insp)))),
)
def _set_result(w: Write, insp: Mapping[str, Any] | None, result: str, note: str | None) -> dict[str, Any] | None:
if insp is None:
return None
return packets.one(
w.conn,
"UPDATE qc_inspections SET result = %s, result_at = now(), result_by = %s, result_note = %s,"
" signature_id = %s, row_version = row_version + 1 WHERE id = %s RETURNING *",
(result, w.user_id, note, w.signature.id if w.signature else None, insp["id"]),
)
def _set_packet(w: Write, assignments: str, params: Sequence[Any] = ()) -> None:
w.conn.execute(f"UPDATE packets SET {assignments} WHERE id = %s", (*params, w.id)) # noqa: S608 (fixed fragments)
def _settings(w: Write) -> Any:
return deps.settings_of(w.request)
def seal_key_id(key: bytes) -> str:
return hashlib.sha256(key).hexdigest()[:8]
def seal_hash(key: bytes, content: Any) -> bytes:
return hmac.new(key, signatures.canonical_json(content), hashlib.sha256).digest()
def _seal_key(w: Write) -> bytes:
try:
key: bytes = _settings(w).seal_key()
except SecretFileError as e:
log.error("seal key unavailable: %s", e)
raise ApiError(503, "server_misconfigured", "The server is missing its seal key.") from None
return key
def qty_text(value: Any) -> str:
"""A quantity without trailing zeros: 4, 2.5."""
if value is None:
return "0"
try:
f = float(value)
except (TypeError, ValueError):
return str(value)
return str(int(f)) if f.is_integer() else f"{f:g}"
def _release_text(w: Write) -> None:
"""The old release label and note.
Label "Released to supervisor", or "... with {n} short"; note "{heats} heats recorded", plus " · SHORT: ..."
when shorts are open.
"""
lines = packets.rows(
w.conn,
"SELECT b.item, b.heat, s.qty_open, s.reason FROM bom_lines b LEFT JOIN bom_shorts s"
" ON s.bom_line_id = b.id AND s.closed_at IS NULL WHERE b.packet_id = %s ORDER BY b.item",
(w.id,),
)
heats = sum(1 for b in lines if str(b["heat"] or "").strip())
shorts = [b for b in lines if b["qty_open"] is not None]
note = f"{heats} heats recorded"
if shorts:
note += " · SHORT: " + ", ".join(
f"item {b['item']} ×{qty_text(b['qty_open'])} ({b['reason'] or ''})" for b in shorts
)
w.log(f"{LABELS[A.WH_RELEASE]} with {len(shorts)} short", note)
else:
w.log(LABELS[A.WH_RELEASE], note)
def hours_text(ms: Any) -> str:
"""Stage clock hours with one decimal: 1.5 h."""
return f"{int(ms or 0) / 3600000:.1f} h"
def _station_name(w: Write, station_id: Any) -> str | None:
if station_id is None:
return None
ch = w.children
if ch is not None and ch.station and ch.station.get("id") == station_id:
return str(ch.station["name"])
r = w.conn.execute("SELECT name FROM stations WHERE id = %s", (station_id,)).fetchone()
return str(r[0]) if r else None
def _dept_text(w: Write, code: str) -> str:
labels = getattr(w.children, "dept_labels", None) or packets.dept_labels(w.conn)
return str(labels.get(code, code))
def _shop_texts(w: Write, a: policy.Action, to_dept: str, stamp: str | None = None) -> None:
"""The packet_log label and note of a shop step (the old click handlers' texts)."""
ex = w.extra
here = _station_name(w, w.packet["station_id"]) or "the station"
note = _note(w)
if a is A.ASSIGN:
station = _station_name(w, int(ex["station_id"])) or "a station"
r = w.conn.execute("SELECT display_name FROM users WHERE id = %s", (str(ex["welder_id"]),)).fetchone()
who = str(r[0]) if r else ""
w.log(f"Sent to {station}", f"{who} [{stamp}]" if stamp else who)
elif a is A.UNASSIGN:
w.log(f"Taken off {here}", note)
elif a is A.PULL_BACK:
w.log(f"Pulled back from {here}", note)
elif a is A.START:
w.log(LABELS[A.START], " · ".join(x for x in (here if w.packet["station_id"] else None, note) if x) or None)
elif a is A.SUBMIT:
r = w.conn.execute(
"SELECT clock_elapsed_ms FROM packet_stages WHERE packet_id = %s AND closed_at IS NULL", (w.id,)
).fetchone()
n = packets.dept_welds(w.packet, w.children) if w.children is not None else 0
text = f"{n} welds · {hours_text(r[0] if r else 0)}"
w.log(LABELS[A.SUBMIT], f"{text} · {note}" if note else text)
elif a is A.RETURN_TO_STATION:
w.log(f"Returned to {here}", _reason(w))
elif a is A.SEND_TO_QC:
loc = clean_opt(ex.get("location"), LIMITS["location"])
w.log(LABELS[A.SEND_TO_QC], " · ".join(x for x in (f"Spool at {loc}" if loc else None, note) if x) or None)
elif a is A.ROUTE_FROM_REVIEW:
text = f"Supervisor, Q.C. skipped · from {_dept_text(w, w.from_dept)}"
w.log(f"Routed to {_dept_text(w, to_dept)}", f"{text} · {note}" if note else text)
SHOP_TEXTS = frozenset(
{A.ASSIGN, A.UNASSIGN, A.PULL_BACK, A.START, A.SUBMIT, A.RETURN_TO_STATION, A.SEND_TO_QC, A.ROUTE_FROM_REVIEW}
)
def apply_transition(w: Write) -> None:
"""Set status, status_at and dept, write the packet_transitions row and run the action's side effects."""
if w.transitioned:
return
w.transitioned = True
a = w.action
rule = w.rule
to_status = rule.to_status
assert to_status is not None
ex = w.extra
reason = _reason(w)
from_dept = w.from_dept
to_dept = from_dept
if rule.dept_change != "no" and isinstance(ex.get("dept"), str) and ex.get("dept"):
to_dept = str(ex["dept"])
stamp: str | None = None
if a in SHOP_TEXTS and a is not A.ASSIGN and a is not A.SUBMIT:
_shop_texts(w, a, to_dept) # before the side effects clear the station
if a in (A.SEND_TO_WAREHOUSE, A.VIS_AUTO_RELEASE):
_set_packet(w, "wh_skipped = false, wh_sent_at = now(), return_note = NULL")
_wh_incoming(w)
elif a is A.RELEASE_TO_SHOP:
_set_packet(
w,
"wh_skipped = true, for_sup_id = %s, return_note = %s",
(ex.get("for_sup_id") or None, _note(w)),
)
_close_stage(w)
_open_stage(w, to_dept)
elif a is A.SEND_DRAFT_TO_QC:
_set_packet(w, "wh_skipped = true")
_close_inspection(w, _open_inspection(w), from_dept)
w.conn.execute(
"INSERT INTO qc_inspections (packet_id, sent_by, sent_note) VALUES (%s, %s, %s)",
(w.id, w.user_id, _note(w)),
)
elif a is A.WH_SEND_BACK:
_set_packet(w, "return_note = %s", (reason,))
_wh_close(w)
elif a is A.RETURN_TO_CLERICAL:
_set_packet(w, "return_note = %s", (reason,))
_close_stage(w)
elif a is A.WH_RELEASE:
_release_text(w)
_wh_close(w)
_close_stage(w)
_open_stage(w, to_dept)
elif a is A.SEND_BACK_TO_WAREHOUSE:
_set_packet(w, "return_note = %s, wh_skipped = false", (reason,))
_close_stage(w)
_wh_incoming(w)
elif a is A.ASSIGN:
station_id = int(ex["station_id"])
welder_id = str(ex["welder_id"])
stamp = clean_opt(ex.get("stamp"), LIMITS["stamp"])
if stamp is None:
r = w.conn.execute("SELECT welder_stamp FROM users WHERE id = %s", (welder_id,)).fetchone()
stamp = r[0] if r else None
_set_packet(w, "station_id = %s, welder_id = %s, welder_stamp = %s", (station_id, welder_id, stamp))
if not packets.one(w.conn, "SELECT id FROM packet_stages WHERE packet_id = %s AND closed_at IS NULL", (w.id,)):
_open_stage(w, from_dept)
_stage_update(w, "station_id = %s, welder_id = %s, welder_stamp = %s", (station_id, welder_id, stamp))
_shop_texts(w, a, to_dept, stamp)
elif a in (A.UNASSIGN, A.PULL_BACK):
_set_packet(w, "station_id = NULL, welder_id = NULL, welder_stamp = NULL")
_stage_update(w, f"{CLOCK_STOP}, station_id = NULL, welder_id = NULL, welder_stamp = NULL")
elif a is A.START:
# A clock that is already running keeps its start; only the server sets it.
_stage_update(
w,
"clock_running_since = coalesce(clock_running_since, now()),"
" clock_started_at = coalesce(clock_started_at, now())",
)
elif a is A.SUBMIT:
_set_packet(w, "return_note = NULL")
_stage_update(w, CLOCK_STOP)
_shop_texts(w, a, to_dept)
elif a is A.RETURN_TO_STATION:
_set_packet(w, "return_note = %s", (reason,))
elif a is A.SEND_TO_QC:
_close_inspection(w, _open_inspection(w), from_dept)
stage = packets.one(w.conn, "SELECT id FROM packet_stages WHERE packet_id = %s AND closed_at IS NULL", (w.id,))
w.conn.execute(
"INSERT INTO qc_inspections (packet_id, stage_id, sent_by, book, spool, location, sent_note)"
" VALUES (%s, %s, %s, %s, %s, %s, %s)",
(
w.id,
stage["id"] if stage else None,
w.user_id,
ex.get("book") is True,
ex.get("spool") is True,
clean_opt(ex.get("location"), LIMITS["location"]),
_note(w),
),
)
elif a in (A.ROUTE_FROM_REVIEW, A.QC_ACCEPT_AND_ROUTE):
insp = _open_inspection(w)
if a is A.QC_ACCEPT_AND_ROUTE:
insp = _set_result(w, insp, "accepted", _note(w))
_close_stage(w, qc_snapshot=insp)
_close_inspection(w, insp, from_dept)
_open_stage(w, to_dept)
_set_packet(w, "station_id = NULL, welder_id = NULL, welder_stamp = NULL, return_note = NULL, routed_to = NULL")
elif a is A.QC_REJECT:
_set_result(w, _open_inspection(w), "rejected", reason)
_set_packet(w, "return_note = %s", (reason,))
if not packets.one(w.conn, "SELECT id FROM packet_stages WHERE packet_id = %s AND closed_at IS NULL", (w.id,)):
_open_stage(w, from_dept) # a draft sent straight to Q.C. has no stage yet
elif a is A.QC_ACCEPT:
insp = _set_result(w, _open_inspection(w), "accepted", _note(w))
_close_inspection(w, insp, from_dept)
_close_stage(w, qc_snapshot=insp)
_set_packet(w, "routed_to = %s::route_kind", (str(ex["routed_to"]),))
_set_packet(w, "status = %s::packet_status, status_at = now(), dept_code = %s", (to_status, to_dept))
if a is A.FILE:
key = _seal_key(w)
row = packets.load_row(w.conn, w.id)
assert row is not None
content = packets.seal_content(w.conn, row)
w.conn.execute(
"INSERT INTO packet_seals (packet_id, hash, key_id, sealed_by, signature_id) VALUES (%s, %s, %s, %s, %s)",
(w.id, seal_hash(key, content), seal_key_id(key), w.user_id, w.signature.id if w.signature else None),
)
elif a is A.ADMIN_REOPEN:
w.conn.execute(
"UPDATE packet_seals SET broken_at = now(), broken_by = %s, broken_reason = %s"
" WHERE packet_id = %s AND broken_at IS NULL",
(w.user_id, reason, w.id),
)
tid = w.conn.execute(
"INSERT INTO packet_transitions (packet_id, by, action, from_status, to_status, from_dept, to_dept, reason,"
" signature_id, it_reason) VALUES (%s, %s, %s, %s::packet_status, %s::packet_status, %s, %s, %s, %s, %s)"
" RETURNING id",
(
w.id,
w.user_id,
str(a),
w.from_status,
to_status,
from_dept,
to_dept,
reason or _note(w),
w.signature.id if w.signature else None,
w.it_reason,
),
).fetchone()
w.transition_id = int(tid[0])
if w.note is None:
w.note = reason or _note(w)
def verify_seal(conn: Any, settings: Any, packet_id: int) -> dict[str, Any]:
"""The seal history of a packet and whether the current unbroken seal still matches the packet."""
seals = packets.rows(conn, "SELECT * FROM packet_seals WHERE packet_id = %s ORDER BY id DESC", (packet_id,))
people = packets.People(conn, [s["sealed_by"] for s in seals] + [s["broken_by"] for s in seals])
current = next((s for s in seals if s["broken_at"] is None), None)
valid: bool | None = None
if current is not None:
try:
key = settings.seal_key()
except SecretFileError:
key = None
if key is not None and seal_key_id(key) == current["key_id"]:
row = packets.load_row(conn, packet_id)
assert row is not None
valid = hmac.compare_digest(seal_hash(key, packets.seal_content(conn, row)), bytes(current["hash"]))
def shape(s: Mapping[str, Any]) -> dict[str, Any]:
return {
"id": s["id"],
"sealed_at": s["sealed_at"],
"sealed_by": people.ref(s["sealed_by"]),
"key_id": s["key_id"],
"hash": bytes(s["hash"]).hex(),
"signed": s["signature_id"] is not None,
"broken_at": s["broken_at"],
"broken_by": people.ref(s["broken_by"]),
"broken_reason": s["broken_reason"],
}
return {"seal": shape(current) if current else None, "valid": valid, "seals": [shape(s) for s in seals]}