bvandeusen
24df8458ea
The container list and dashboard widget listed each swarm task as its own cryptic row (svc.1.<taskid>) and could only show tasks on nodes that run a Steward agent. Make both views service-centric and cluster-complete. - swarm_view.build_swarm_services(): model-free builder that merges real container rows (collected local-per-node, so host_id = the node a task runs on) with the managers' placement (DockerSwarmService.placement_json). Where placement counts exceed the local rows on a node — i.e. nodes with no agent — it synthesizes "ghost" replicas so the replica list matches the cluster. Non-swarm containers pass through grouped by host. - /rows + rows.html: a Swarm-services panel collapses each service to one block, every replica a host chip (status + cpu); ghosts render dashed "N · no agent". Non-swarm/compose containers keep the per-host table below. New Services stat. - /widget + widget.html: same service collapse with host chips; standalone containers stay grouped by host. - Unit tests for the builder (real+ghost merge, full coverage, partial agent-less, synthesized service, down state). No migration — node_id, placement_json and swarm-node hostnames are already stored. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_016Jg27rgypiW2efULXJDtMC
566 lines
22 KiB
Python
566 lines
22 KiB
Python
# plugins/docker/routes.py
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from __future__ import annotations
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import json
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from datetime import datetime, timedelta, timezone
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from quart import Blueprint, current_app, render_template, request
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from sqlalchemy import func, select
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from steward.auth.middleware import require_role
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from steward.models.users import UserRole
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from steward.models.hosts import Host
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from steward.core.time_range import parse_range, DEFAULT_RANGE
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from .dedup import dedup_by_container_id
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from .swarm_view import build_swarm_services
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from .models import (
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DockerContainer, DockerDiskUsage, DockerEvent, DockerImage, DockerMetric,
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DockerSwarmNode, DockerSwarmService,
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)
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docker_bp = Blueprint("docker", __name__, template_folder="templates")
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def _human_bytes(n: int | None) -> str:
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"""Compact binary size string (e.g. '1.4 GiB', '512 MiB', '0 B')."""
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if n is None:
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return "—"
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size = float(n)
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for unit in ("B", "KiB", "MiB", "GiB", "TiB"):
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if abs(size) < 1024.0 or unit == "TiB":
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if unit == "B":
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return f"{int(size)} {unit}"
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return f"{size:.1f} {unit}"
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size /= 1024.0
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return f"{size:.1f} TiB"
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def _human_uptime(started_at: datetime | None) -> str | None:
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"""Compact 'how long running' string (e.g. '3d 4h', '5h 12m', '8m')."""
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if started_at is None:
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return None
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if started_at.tzinfo is None:
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started_at = started_at.replace(tzinfo=timezone.utc)
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secs = int((datetime.now(timezone.utc) - started_at).total_seconds())
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if secs < 0:
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return None
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d, rem = divmod(secs, 86400)
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h, rem = divmod(rem, 3600)
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m, _ = divmod(rem, 60)
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if d:
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return f"{d}d {h}h"
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if h:
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return f"{h}h {m}m"
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return f"{m}m"
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def _sparkline(values: list[float], width: int = 80, height: int = 20) -> str:
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if len(values) < 2:
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return f'<svg width="{width}" height="{height}"></svg>'
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mn, mx = min(values), max(values)
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if mx == mn:
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mx = mn + 1.0
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step = width / (len(values) - 1)
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pts = []
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for i, v in enumerate(values):
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x = i * step
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y = height - (v - mn) / (mx - mn) * (height - 2) - 1
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pts.append(f"{x:.1f},{y:.1f}")
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poly = " ".join(pts)
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return (
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f'<svg width="{width}" height="{height}" viewBox="0 0 {width} {height}" '
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f'style="vertical-align:middle;">'
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f'<polyline points="{poly}" fill="none" stroke="#6060c0" stroke-width="1.5"/>'
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f'</svg>'
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)
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def _bucket(values: list[float], target: int = 40) -> list[float]:
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"""Bucket-average a series down to ~target points (DB-agnostic, in Python).
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Replaces the old SQL strftime() bucketing, which was SQLite-only and broke
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on Postgres. Agent cadence is dense, so a multi-hour window is hundreds of
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rows — averaging into a readable point count keeps the sparkline's shape.
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"""
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n = len(values)
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if n <= target:
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return values
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size = (n + target - 1) // target
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out: list[float] = []
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for i in range(0, n, size):
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chunk = values[i:i + size]
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out.append(sum(chunk) / len(chunk))
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return out
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async def _container_history(db, host_id: str, name: str, since) -> tuple[list, list]:
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"""Return (cpu_series, mem_series) sparkline-ready for one host's container."""
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rows = (await db.execute(
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select(DockerMetric.cpu_pct, DockerMetric.mem_pct)
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.where(DockerMetric.host_id == host_id)
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.where(DockerMetric.container_name == name)
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.where(DockerMetric.scraped_at >= since)
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.order_by(DockerMetric.scraped_at)
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)).all()
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cpu = _bucket([r.cpu_pct or 0.0 for r in rows])
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mem = _bucket([r.mem_pct or 0.0 for r in rows])
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return cpu, mem
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@docker_bp.get("/")
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@require_role(UserRole.viewer)
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async def index():
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poll_interval = current_app.config.get("MONITORS_POLL_INTERVAL", 60)
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current_range = request.args.get("range", DEFAULT_RANGE)
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# Show the Swarm link only when a manager has actually reported topology, so
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# non-swarm installs aren't offered an always-empty page.
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async with current_app.db_sessionmaker() as db:
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has_swarm = (await db.execute(
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select(DockerSwarmService.host_id).limit(1))).first() is not None
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has_disk = (await db.execute(
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select(DockerDiskUsage.host_id).limit(1))).first() is not None
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return await render_template(
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"docker/index.html",
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poll_interval=poll_interval,
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current_range=current_range,
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has_swarm=has_swarm,
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has_disk=has_disk,
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)
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async def _host_map(db, host_ids: set[str]) -> dict[str, Host]:
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if not host_ids:
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return {}
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return {
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h.id: h for h in (await db.execute(
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select(Host).where(Host.id.in_(host_ids)))).scalars().all()
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}
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@docker_bp.get("/rows")
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@require_role(UserRole.viewer)
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async def rows():
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"""HTMX fragment: swarm services (collapsed, cluster-complete) on top, then
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non-swarm containers grouped by host with resource sparklines."""
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since, range_key = parse_range(request.args.get("range"))
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async with current_app.db_sessionmaker() as db:
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containers = list((await db.execute(
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select(DockerContainer).order_by(
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(DockerContainer.status == "running").desc(),
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DockerContainer.name,
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)
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)).scalars())
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services = list((await db.execute(select(DockerSwarmService))).scalars())
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nodes = list((await db.execute(select(DockerSwarmNode))).scalars())
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hosts = await _host_map(
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db,
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{c.host_id for c in containers}
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| {n.host_id for n in nodes} | {s.host_id for s in services},
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)
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# Swarm tasks collapse into per-service rows (each replica labelled with
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# its host, plus "ghost" replicas for tasks on agent-less nodes, drawn
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# from the managers' placement). Non-swarm containers keep the host view.
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node_hostname = {n.node_id: n.hostname for n in nodes if n.hostname}
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host_name = {h.id: h.name for h in hosts.values()}
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swarm_view = build_swarm_services(containers, services, node_hostname, host_name)
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standalone = [c for c in containers if not c.service_name]
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groups: dict[str, dict] = {}
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for c in standalone:
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g = groups.get(c.host_id)
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if g is None:
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host = hosts.get(c.host_id)
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g = groups[c.host_id] = {
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"host": host,
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"host_id": c.host_id,
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"host_name": host.name if host else c.host_id,
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"containers": [], "running": 0, "stopped": 0,
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}
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cpu_hist, mem_hist = await _container_history(db, c.host_id, c.name, since)
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g["containers"].append({
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"container": c,
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"ports": json.loads(c.ports_json) if c.ports_json else [],
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"uptime": _human_uptime(c.started_at) if c.status == "running" else None,
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"sparkline_cpu": _sparkline(cpu_hist),
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"sparkline_mem": _sparkline(mem_hist),
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})
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if c.status == "running":
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g["running"] += 1
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else:
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g["stopped"] += 1
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# Sub-group each host's containers by compose project, preserving the
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# running-first ordering. Containers with no project fall into an unlabelled
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# bucket rendered flat, so plain hosts look unchanged.
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for g in groups.values():
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subs: dict[str, dict] = {}
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order: list[str] = []
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for item in g["containers"]:
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c = item["container"]
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label = c.compose_project or None
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key = label or ""
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if key not in subs:
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subs[key] = {"label": label, "containers": []}
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order.append(key)
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subs[key]["containers"].append(item)
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g["subgroups"] = [subs[k] for k in order]
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g["grouped"] = any(s["label"] for s in g["subgroups"])
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host_groups = sorted(groups.values(), key=lambda g: g["host_name"].lower())
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swarm_services = swarm_view["services"]
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standalone_running = sum(g["running"] for g in host_groups)
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ghost_total = sum(r["count"] for s in swarm_services for r in s["replicas"] if r["ghost"])
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return await render_template(
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"docker/rows.html",
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host_groups=host_groups,
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swarm_services=swarm_services,
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running=standalone_running + sum(s["running"] for s in swarm_services),
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stopped=len(standalone) - standalone_running,
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total=len(containers) + ghost_total,
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range_key=range_key,
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)
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@docker_bp.get("/widget")
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@require_role(UserRole.viewer)
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async def widget():
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"""HTMX dashboard widget: container status overview, grouped by host."""
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show_stopped = request.args.get("show_stopped", "no") == "yes"
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widget_id = request.args.get("wid", "0")
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since_24h = datetime.now(timezone.utc) - timedelta(hours=24)
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async with current_app.db_sessionmaker() as db:
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all_containers = dedup_by_container_id(list((await db.execute(
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select(DockerContainer).order_by(
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(DockerContainer.status == "running").desc(),
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DockerContainer.name,
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)
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)).scalars()))
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services = list((await db.execute(select(DockerSwarmService))).scalars())
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nodes = list((await db.execute(select(DockerSwarmNode))).scalars())
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# Recent failures are more actionable than a static "stopped" tally. Count
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# DISTINCT container names so the two managers' duplicate die/oom events
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# don't double it.
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failed_24h = (await db.execute(
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select(func.count(func.distinct(DockerEvent.container_name)))
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.where(DockerEvent.event.in_(("die", "oom")), DockerEvent.at >= since_24h)
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)).scalar() or 0
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hosts = await _host_map(
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db,
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{c.host_id for c in all_containers}
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| {n.host_id for n in nodes} | {s.host_id for s in services},
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)
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# Swarm tasks collapse into per-service rows (each replica tagged with its
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# host); non-swarm containers stay grouped by host.
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node_hostname = {n.node_id: n.hostname for n in nodes if n.hostname}
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host_name = {h.id: h.name for h in hosts.values()}
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swarm_services = build_swarm_services(all_containers, services, node_hostname, host_name)["services"]
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standalone = [c for c in all_containers if not c.service_name]
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running = [c for c in standalone if c.status == "running"]
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display = standalone if show_stopped else running
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# Group for display so multi-host fleets read clearly; single-host stays flat.
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groups: dict[str, dict] = {}
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for c in display:
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g = groups.setdefault(c.host_id, {
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"host_id": c.host_id,
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"host_name": host_name.get(c.host_id, c.host_id),
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"containers": [],
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})
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g["containers"].append(c)
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host_groups = sorted(groups.values(), key=lambda g: g["host_name"].lower())
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return await render_template(
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"docker/widget.html",
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host_groups=host_groups,
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multi_host=len(host_groups) > 1,
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swarm_services=swarm_services,
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running_count=len(running) + sum(s["running"] for s in swarm_services),
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failed_24h=failed_24h,
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total_count=len(all_containers) + len(swarm_services),
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show_stopped=show_stopped,
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widget_id=widget_id,
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)
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@docker_bp.get("/widget/resources")
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@require_role(UserRole.viewer)
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async def widget_resources():
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"""HTMX dashboard widget: CPU + memory usage for the busiest containers."""
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limit = max(1, min(20, int(request.args.get("limit", 10) or 10)))
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widget_id = request.args.get("wid", "0")
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async with current_app.db_sessionmaker() as db:
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# Dedup before the limit, else swarm tasks reported by both managers can
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# fill the list with duplicates of the same container.
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containers = dedup_by_container_id(list((await db.execute(
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select(DockerContainer)
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.where(DockerContainer.status == "running")
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.order_by(DockerContainer.cpu_pct.desc().nullslast())
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)).scalars()))[:limit]
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hosts = await _host_map(db, {c.host_id for c in containers})
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rows_data = [
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{"c": c, "host_name": hosts[c.host_id].name if c.host_id in hosts else c.host_id}
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for c in containers
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]
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return await render_template(
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"docker/widget_resources.html",
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rows=rows_data,
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multi_host=len({c.host_id for c in containers}) > 1,
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widget_id=widget_id,
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)
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@docker_bp.get("/host/<host_id>")
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@require_role(UserRole.viewer)
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async def host_panel(host_id: str):
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"""Per-host Docker fragment embedded on the core Hosts hub via HTMX.
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Renders nothing when the host reports no containers, so hosts without Docker
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don't carry an empty card.
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"""
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async with current_app.db_sessionmaker() as db:
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containers = list((await db.execute(
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select(DockerContainer)
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.where(DockerContainer.host_id == host_id)
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.order_by(
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(DockerContainer.status == "running").desc(),
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DockerContainer.name,
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)
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)).scalars())
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if not containers:
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return ""
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running = sum(1 for c in containers if c.status == "running")
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return await render_template(
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"docker/host_panel.html",
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containers=containers,
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running=running,
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stopped=len(containers) - running,
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)
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|
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# Glyph + colour per lifecycle event, so the timeline reads at a glance.
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_EVENT_STYLE = {
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"start": ("▲", "var(--green)"),
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"stop": ("■", "var(--text-muted)"),
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"die": ("✕", "var(--red)"),
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"oom": ("☠", "var(--red)"),
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"health_change": ("◐", "var(--orange)"),
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}
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|
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@docker_bp.get("/container/<host_id>/<name>")
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@require_role(UserRole.viewer)
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async def container_detail(host_id: str, name: str):
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"""Full detail page for one container: facts, resource history, lifecycle."""
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async with current_app.db_sessionmaker() as db:
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c = await db.get(DockerContainer, (host_id, name))
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host = await db.get(Host, host_id)
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events = []
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if c is not None:
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events = list((await db.execute(
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select(DockerEvent)
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.where(DockerEvent.host_id == host_id)
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.where(DockerEvent.container_name == name)
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|
.order_by(DockerEvent.at.desc())
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.limit(50)
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|
)).scalars())
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|
|
|
if c is None:
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return await render_template(
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|
"docker/container_detail.html",
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container=None, host_id=host_id, name=name,
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), 404
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|
|
return await render_template(
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|
"docker/container_detail.html",
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|
container=c,
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host=host,
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host_id=host_id,
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name=name,
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ports=json.loads(c.ports_json) if c.ports_json else [],
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|
uptime=_human_uptime(c.started_at) if c.status == "running" else None,
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net_rx=_human_bytes(c.net_rx_bytes), net_tx=_human_bytes(c.net_tx_bytes),
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|
blk_read=_human_bytes(c.blk_read_bytes), blk_write=_human_bytes(c.blk_write_bytes),
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|
events=[
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{"event": e.event, "detail": e.detail, "at": e.at,
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"glyph": _EVENT_STYLE.get(e.event, ("•", "var(--text-muted)"))[0],
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|
"colour": _EVENT_STYLE.get(e.event, ("•", "var(--text-muted)"))[1]}
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|
for e in events
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|
],
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|
current_range=request.args.get("range", DEFAULT_RANGE),
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)
|
|
|
|
|
|
@docker_bp.get("/swarm")
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|
@require_role(UserRole.viewer)
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|
async def swarm():
|
|
"""Swarm topology page: services with replica health, nodes, placement.
|
|
|
|
Swarm services/nodes are cluster-global — every manager's API returns the
|
|
same list — but each manager reports them independently (rows keyed by
|
|
host_id). So we group the reporting managers into swarms (managers that share
|
|
any node_id are the same cluster) and dedup within each: one row per service
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|
(by name) and per node (by node_id), keeping the freshest. Without this, two
|
|
managers in one cluster list every service/node twice.
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"""
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|
async with current_app.db_sessionmaker() as db:
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|
services = list((await db.execute(
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|
select(DockerSwarmService).order_by(DockerSwarmService.service_name)
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|
)).scalars())
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|
nodes = list((await db.execute(
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|
select(DockerSwarmNode).order_by(
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DockerSwarmNode.role, DockerSwarmNode.hostname)
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)).scalars())
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hosts = await _host_map(db, {s.host_id for s in services} | {n.host_id for n in nodes})
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|
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# ── Group reporting managers into swarms by shared node membership ──────────
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manager_ids = {s.host_id for s in services} | {n.host_id for n in nodes}
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nodes_by_mgr: dict[str, set[str]] = {}
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for n in nodes:
|
|
nodes_by_mgr.setdefault(n.host_id, set()).add(n.node_id)
|
|
|
|
parent = {m: m for m in manager_ids}
|
|
|
|
def _find(x: str) -> str:
|
|
while parent[x] != x:
|
|
parent[x] = parent[parent[x]]
|
|
x = parent[x]
|
|
return x
|
|
|
|
mgrs = list(manager_ids)
|
|
for i in range(len(mgrs)):
|
|
for j in range(i + 1, len(mgrs)):
|
|
a, b = mgrs[i], mgrs[j]
|
|
if nodes_by_mgr.get(a) and nodes_by_mgr.get(b) and (nodes_by_mgr[a] & nodes_by_mgr[b]):
|
|
parent[_find(a)] = _find(b)
|
|
|
|
swarm_members: dict[str, set[str]] = {}
|
|
for m in manager_ids:
|
|
swarm_members.setdefault(_find(m), set()).add(m)
|
|
|
|
# ── Dedup services (by name) + nodes (by node_id) within each swarm ─────────
|
|
swarms = []
|
|
for members in swarm_members.values():
|
|
svc_by_name: dict[str, DockerSwarmService] = {}
|
|
for s in services:
|
|
if s.host_id in members and (
|
|
s.service_name not in svc_by_name
|
|
or s.updated_at > svc_by_name[s.service_name].updated_at
|
|
):
|
|
svc_by_name[s.service_name] = s
|
|
node_by_id: dict[str, DockerSwarmNode] = {}
|
|
for n in nodes:
|
|
if n.host_id in members and (
|
|
n.node_id not in node_by_id
|
|
or n.updated_at > node_by_id[n.node_id].updated_at
|
|
):
|
|
node_by_id[n.node_id] = n
|
|
|
|
node_names = {nid: (nrow.hostname or nid) for nid, nrow in node_by_id.items()}
|
|
svc_dicts = []
|
|
for s in sorted(svc_by_name.values(), key=lambda s: s.service_name):
|
|
placement = []
|
|
for p in (json.loads(s.placement_json) if s.placement_json else []):
|
|
nid = p.get("node_id", "")
|
|
placement.append({
|
|
"node": node_names.get(nid, nid[:12] or "?"),
|
|
"running": p.get("running", 0),
|
|
})
|
|
svc_dicts.append({
|
|
"name": s.service_name, "mode": s.mode,
|
|
"running": s.running, "desired": s.desired, "image": s.image,
|
|
"healthy": s.running >= s.desired and s.desired > 0,
|
|
"degraded": 0 < s.running < s.desired,
|
|
"down": s.running == 0 and s.desired > 0,
|
|
"placement": placement,
|
|
})
|
|
node_rows = sorted(
|
|
node_by_id.values(), key=lambda n: (n.role, (n.hostname or n.node_id).lower())
|
|
)
|
|
manager_names = sorted(hosts[m].name if m in hosts else m for m in members)
|
|
swarms.append({
|
|
"managers": manager_names,
|
|
"services": svc_dicts,
|
|
"nodes": node_rows,
|
|
})
|
|
|
|
swarms.sort(key=lambda g: g["managers"][0].lower() if g["managers"] else "")
|
|
return await render_template("docker/swarm.html", swarms=swarms)
|
|
|
|
|
|
@docker_bp.get("/disk")
|
|
@require_role(UserRole.viewer)
|
|
async def disk():
|
|
"""Image/disk usage page: reclaimable space, per-image sizes, stopped count.
|
|
|
|
Read-only — prune actions are deferred to the cleanup-actions milestone, so
|
|
this surfaces the numbers and notes where reclaim lives.
|
|
"""
|
|
async with current_app.db_sessionmaker() as db:
|
|
summaries = list((await db.execute(select(DockerDiskUsage))).scalars())
|
|
images = list((await db.execute(
|
|
select(DockerImage).order_by(DockerImage.size.desc())
|
|
)).scalars())
|
|
# Stopped-container count per host, surfaced alongside reclaimable space.
|
|
stopped_rows = (await db.execute(
|
|
select(DockerContainer.host_id)
|
|
.where(DockerContainer.status != "running")
|
|
)).scalars()
|
|
stopped_by_host: dict[str, int] = {}
|
|
for hid in stopped_rows:
|
|
stopped_by_host[hid] = stopped_by_host.get(hid, 0) + 1
|
|
hosts = await _host_map(db, {s.host_id for s in summaries})
|
|
|
|
images_by_host: dict[str, list] = {}
|
|
for im in images:
|
|
images_by_host.setdefault(im.host_id, []).append({
|
|
"repo_tag": im.repo_tag, "size": _human_bytes(im.size),
|
|
"shared": _human_bytes(im.shared_size), "containers": im.containers,
|
|
"reclaimable": im.containers == 0,
|
|
})
|
|
|
|
host_groups = [
|
|
{
|
|
"host_id": s.host_id,
|
|
"host_name": hosts[s.host_id].name if s.host_id in hosts else s.host_id,
|
|
"summary": {
|
|
"images_total": s.images_total, "images_active": s.images_active,
|
|
"images_size": _human_bytes(s.images_size),
|
|
"images_reclaimable": _human_bytes(s.images_reclaimable),
|
|
"layers_size": _human_bytes(s.layers_size),
|
|
"containers_count": s.containers_count,
|
|
"containers_size": _human_bytes(s.containers_size),
|
|
"volumes_count": s.volumes_count,
|
|
"volumes_size": _human_bytes(s.volumes_size),
|
|
"build_cache_size": _human_bytes(s.build_cache_size),
|
|
},
|
|
"stopped": stopped_by_host.get(s.host_id, 0),
|
|
"images": images_by_host.get(s.host_id, []),
|
|
}
|
|
for s in summaries
|
|
]
|
|
host_groups.sort(key=lambda g: g["host_name"].lower())
|
|
return await render_template("docker/disk.html", host_groups=host_groups)
|
|
|
|
|
|
@docker_bp.get("/container/<host_id>/<name>/history")
|
|
@require_role(UserRole.viewer)
|
|
async def container_history(host_id: str, name: str):
|
|
"""HTMX fragment: CPU + memory sparklines for the selected time range."""
|
|
since, range_key = parse_range(request.args.get("range"))
|
|
async with current_app.db_sessionmaker() as db:
|
|
cpu_hist, mem_hist = await _container_history(db, host_id, name, since)
|
|
return await render_template(
|
|
"docker/_container_history.html",
|
|
sparkline_cpu=_sparkline(cpu_hist, width=320, height=48),
|
|
sparkline_mem=_sparkline(mem_hist, width=320, height=48),
|
|
have_data=len(cpu_hist) >= 2,
|
|
range_key=range_key,
|
|
)
|