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Layout refresh latency bug revised

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=
2026-06-04 19:47:18 +08:00
parent f9c3f12aea
commit 7ac76aaee9
7 changed files with 567 additions and 11 deletions
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backend/server.py
+19 -3
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@@ -1,6 +1,6 @@
# -----------------------------------------------------------------------------
# Description: Flask backend API server for authentication, project management, PDK library access, layout preview, and GDS build endpoints.
# Inside functions: no_cache_response, login_required_json, wrapper, request_ip, record_action, safe_name, user_layout_root, project_root, cell_file_path, cell_svg_path, cell_routes_path, write_route_points_sidecar, project_gds_path, technology_manifest_path_for_project, current_pdk_root, scoped_pdk_root_for_project, pdk_root_for_request_project, project_meta_path, read_project_meta
# Inside functions: no_cache_response, login_required_json, wrapper, request_ip, record_action, safe_name, user_layout_root, project_root, cell_file_path, cell_svg_path, file_version, cell_routes_path, write_route_points_sidecar, project_gds_path, technology_manifest_path_for_project, current_pdk_root, scoped_pdk_root_for_project, pdk_root_for_request_project, project_meta_path, read_project_meta
# Developer : Qin Yue @ 2026
# Organization : OptiHK Limited
# -----------------------------------------------------------------------------
@@ -9,6 +9,7 @@ import os
import re
import shutil
import json
import uuid
import yaml
from collections import OrderedDict
from functools import wraps
@@ -135,6 +136,12 @@ def cell_svg_path(project_name, cell_name):
return os.path.join(project_root(project_name), f"{safe_name(cell_name, 'canvas_1')}.svg")
def file_version(path):
"""Return a cache-busting version token for a completed file."""
stat = os.stat(path)
return f"{stat.st_mtime_ns}-{stat.st_size}"
def cell_routes_path(project_name, cell_name):
"""Return the route sidecar JSON path for a project cell."""
return os.path.join(project_root(project_name), f"{safe_name(cell_name, 'canvas_1')}.routes.yml")
@@ -739,24 +746,31 @@ def save_layout():
write_route_points_sidecar(content, cell_routes_path(project, cell))
svg_path = None
svg_version = None
preview_status = "not_requested"
preview_error = None
if create_preview:
svg_path = cell_svg_path(project, cell)
temp_svg_path = f"{svg_path}.building-{os.getpid()}-{uuid.uuid4().hex}.svg"
try:
create_routed_layout_svg(
content,
svg_path,
temp_svg_path,
pdk_root=current_pdk_root(),
project_dir=project_root(project),
technology_manifest_path=technology_manifest_path_for_project(project),
prefer_full_gds=prefer_full_gds_for_session(session),
)
os.replace(temp_svg_path, svg_path)
svg_version = file_version(svg_path)
preview_status = "generated"
except RouterStackUnavailable as e:
preview_status = "skipped"
preview_error = str(e)
svg_path = None
finally:
if os.path.exists(temp_svg_path):
os.remove(temp_svg_path)
record_action('layout.save', project=project, cell=cell, detail={"bytes": len(content), "svg": svg_path})
return jsonify({
@@ -765,7 +779,9 @@ def save_layout():
"cell": cell,
"path": save_path,
"svg_path": svg_path,
"svg_url": url_for('get_layout_svg', project_name=project, cell_name=cell) if svg_path else None,
"svg_url": url_for('get_layout_svg', project_name=project, cell_name=cell, v=svg_version) if svg_path else None,
"svg_ready": bool(svg_path and svg_version),
"svg_version": svg_version,
"preview_status": preview_status,
"preview_error": preview_error
}), 200
database/admin/layout/mxpic_project_1/canvas_1.svg
+293
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After

Width:  |  Height:  |  Size: 319 KiB

database/admin/layout/mxpic_project_1/canvas_1.yml
+211
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@@ -0,0 +1,211 @@
# =============================================
# mxPIC Cell/Project Definition File
# =============================================
schema_version: "2.0.0"
kind: cell
coordinate_system: gds_y_up
canvas_size:
width: 500
height: 600
project: mxpic_project_1
name: canvas_1
type: composite
version: "1.0.0"
# 1. External Ports (How this cell connects to the outside world)
pins:
- name: port_io1
layer: WG_CORE
element: port
pin: io1
x: 40.0
y: -90.0
angle: 180.0
width: 0.5
- name: port_1_io1
layer: WG_CORE
element: port_1
pin: io1
x: 410.0
y: -35.0
angle: 0.0
width: 0.5
- name: port_1_io2
layer: WG_CORE
element: port_1
pin: io2
x: 410.0
y: -25.0
angle: 0.0
width: 0.5
- name: port_2_io1
layer: WG_CORE
element: port_2
pin: io1
x: 390.0
y: -215.0
angle: 0.0
width: 0.5
- name: port_2_io2
layer: WG_CORE
element: port_2
pin: io2
x: 390.0
y: -205.0
angle: 0.0
width: 0.5
# 2. Instances (The sub-components dropped onto this canvas)
instances:
MMI_1:
component: Silterra/EMO1_2ML_CU_Al_RDL/primitives/multimode_interferometers/1x2MMI_1310nm_TE_Silterra_202603_ZKY_v2
x: 130.0
y: -90.0
rotation: 0.0
flip: 0
flop: 0
mirror: false
settings:
length:
MMI_2:
component: Silterra/EMO1_2ML_CU_Al_RDL/primitives/multimode_interferometers/1x2MMI_1310nm_TE_Silterra_202603_ZKY_v2
x: 280.0
y: -30.0
rotation: 0.0
flip: 0
flop: 0
mirror: false
settings:
length:
MMI_3:
component: Silterra/EMO1_2ML_CU_Al_RDL/primitives/multimode_interferometers/1x2MMI_1310nm_TE_Silterra_202603_ZKY_v2
x: 320.1
y: -144.7
rotation: 0.0
flip: 0
flop: 0
mirror: false
settings:
length:
elements:
port:
type: port
x: 40.0
y: -90.0
angle: 180.0
pin_number: 1
pitch: 10
layer: WG_CORE
width: 0.5
description: ""
pins:
- name: port_io1
role: io1
port:
type: port
x: 40.0
y: -90.0
angle: 0.0
pin_number: 1
pitch: 10
layer: WG_CORE
width: 0.5
description: ""
pins:
- name: port_io1
role: io1
port_1:
type: port
x: 410.0
y: -30.0
angle: 180.0
pin_number: 2
pitch: 10
layer: WG_CORE
width: 0.5
description: ""
pins:
- name: port_1_io1
role: io1
- name: port_1_io2
role: io2
port_2:
type: port
x: 390.0
y: -210.0
angle: 180.0
pin_number: 2
pitch: 10
layer: WG_CORE
width: 0.5
description: ""
pins:
- name: port_2_io1
role: io1
- name: port_2_io2
role: io2
# 3. Bundles (Grouped links for multi-bus/parallel routing)
bundles:
output_bus:
routing_type: euler_bend
links:
- from: MMI_1:a1
to: port:port_io1
xsection: strip
family: optical
width: 0.45
radius: 10
routing_type: euler_bend
- from: MMI_2:a1
to: MMI_1:b1
xsection: strip
family: optical
width: 0.45
radius: 10
routing_type: euler_bend
- from: MMI_3:a1
to: MMI_1:b2
xsection: strip
family: optical
width: 0.45
radius: 10
routing_type: euler_bend
- from: MMI_2:b1
to: port_1:port_1_io1
xsection: strip
family: optical
width: 0.45
radius: 10
routing_type: euler_bend
- from: MMI_2:b1
to: port_1:port_1_io2
xsection: strip
family: optical
width: 0.45
radius: 10
routing_type: euler_bend
- from: MMI_2:b2
to: port_1:port_1_io1
xsection: strip
family: optical
width: 0.45
radius: 10
routing_type: euler_bend
- from: MMI_3:b1
to: port_2:port_2_io2
xsection: strip
family: optical
width: 0.45
radius: 10
routing_type: euler_bend
- from: MMI_3:b2
to: port_2:port_2_io1
xsection: strip
family: optical
width: 0.45
radius: 10
routing_type: euler_bend
database/mxpic_data.db
BIN
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frontend/canvas.html
+25 -8
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@@ -3760,6 +3760,8 @@ Organization : OptiHK Limited
const initializedRef = useRef(false);
const canvasViewportRef = useRef(null);
const buildLayoutRequestRef = useRef(0);
const buildLayoutBusyRef = useRef(false);
const edgeTypes = useMemo(() => ({ parallelRoute: ParallelRouteEdge }), []);
const activePage = useMemo(() => pages.find(p => p.id === activePageId) || null, [pages, activePageId]);
@@ -6208,49 +6210,64 @@ ${bundlesBlock}`;
// Save the active page, generate layout preview assets, and show the preview tab.
const handleBuildLayout = useCallback(async () => {
if (!activePage) return;
if (buildLayoutBusy) return;
if (buildLayoutBusyRef.current) return;
if (!validateRouteCrossings(activePage)) return;
const buildPage = activePage;
const buildRequestId = buildLayoutRequestRef.current + 1;
buildLayoutRequestRef.current = buildRequestId;
buildLayoutBusyRef.current = true;
setBuildLayoutBusy(true);
startBuildProgress('Building layout');
const yamlContent = buildYamlForPage(activePage);
const yamlContent = buildYamlForPage(buildPage);
const layoutBounds = calculateLayoutBounds(buildPage);
// send to backend
try {
const response = await fetch('/api/save-layout', {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
cache: 'no-store',
body: JSON.stringify({
project: currentProjectName,
cell: activePage.name,
cell: buildPage.name,
content: yamlContent,
}),
});
if (!response.ok) {
const errData = await response.json();
const errData = await response.json().catch(() => ({}));
if (buildRequestId !== buildLayoutRequestRef.current) return;
addLog(errData.error || 'Save failed, unknown error');
stopBuildProgress();
return;
}
const result = await response.json();
if (buildRequestId !== buildLayoutRequestRef.current) return;
addLog('Successfully saved: ' + result.path);
if (result.preview_error) {
addLog('Preview skipped: ' + result.preview_error);
}
if (result.svg_url) {
if (result.svg_ready && result.svg_url) {
completeBuildProgress('Layout ready');
openLayoutPreview(activePage.name, result.svg_url, calculateLayoutBounds(activePage));
openLayoutPreview(buildPage.name, result.svg_url, layoutBounds);
} else {
if (result.preview_status === 'generated') {
addLog('Layout SVG was not marked ready by the backend.');
}
completeBuildProgress('Layout saved');
}
} catch (err) {
if (buildRequestId !== buildLayoutRequestRef.current) return;
addLog('Save error: ' + err.message);
stopBuildProgress();
} finally {
setBuildLayoutBusy(false);
if (buildRequestId === buildLayoutRequestRef.current) {
buildLayoutBusyRef.current = false;
setBuildLayoutBusy(false);
}
}
}, [activePage, buildLayoutBusy, buildYamlForPage, currentProjectName, addLog, openLayoutPreview, validateRouteCrossings, startBuildProgress, completeBuildProgress, stopBuildProgress]);
}, [activePage, buildYamlForPage, currentProjectName, addLog, openLayoutPreview, validateRouteCrossings, startBuildProgress, completeBuildProgress, stopBuildProgress]);
// Save YAML for every editable project/composite page without opening previews.
const handleSaveProjectLayouts = useCallback(async () => {
tests/layout-backend-static.test.js
+12
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@@ -60,6 +60,18 @@ assert(
serverPy.includes('svg_url'),
'save-layout response should include an svg_url for the new layout tab'
);
assert(
serverPy.includes('svg_ready') &&
serverPy.includes('svg_version') &&
serverPy.includes('file_version(svg_path)') &&
serverPy.includes("url_for('get_layout_svg', project_name=project, cell_name=cell, v=svg_version)"),
'save-layout response should only expose a versioned SVG URL after the preview file is ready'
);
assert(
serverPy.includes('temp_svg_path') &&
serverPy.includes('os.replace(temp_svg_path, svg_path)'),
'save-layout should publish generated SVG previews atomically instead of serving partially written files'
);
assert(
serverPy.includes('RouterStackUnavailable') &&
serverPy.includes('except RouterStackUnavailable as e') &&
tests/layout-ui-wiring.test.js
+7
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@@ -32,6 +32,13 @@ assert(
canvasHtml.includes('svg_url'),
'Build Layout should use the backend svg_url response'
);
assert(
canvasHtml.includes('result.svg_ready && result.svg_url') &&
canvasHtml.includes('buildLayoutRequestRef') &&
canvasHtml.includes('buildLayoutBusyRef') &&
canvasHtml.includes("cache: 'no-store'"),
'Build Layout should wait for a ready, versioned SVG response and prevent stale duplicate preview updates'
);
assert(
canvasHtml.includes('result.preview_error') &&
canvasHtml.includes('Preview skipped: '),