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// Copyright (C) 2026 Danilo M. <danix@danix.xyz>
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License version 2 as
// published by the Free Software Foundation.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
pragma Singleton
import Quickshell
import Quickshell.Io
import QtQuick
// The docker half of the vm page, shaped like Virsh: the docker CLI, an
// event stream that always runs, and a stats poll only while the page is up.
// Containers are grouped by compose project, because one compose stack is a
// dozen containers that start and stop together; a container outside any
// project is a group of one.
Singleton {
id: root
// project -> [{ id, name, state, status, image }], names sorted
property var groups: ({})
property var projects: []
property var stats: ({}) // short id -> { cpu, mem, memTotal }
property bool sampling: false
signal actionFailed(string target, string action, string message)
// --- discovery -------------------------------------------------------
Process {
id: listProc
command: ["docker", "ps", "-a", "--format",
'{{.ID}}\t{{.Names}}\t{{.State}}\t{{.Status}}\t{{.Label "com.docker.compose.project"}}\t{{.Image}}']
stdout: StdioCollector {
onStreamFinished: {
const g = {};
for (const line of text.split("\n")) {
const f = line.split("\t");
if (f.length < 6) continue;
const p = f[4] || f[1];
(g[p] = g[p] ?? []).push({ id: f[0], name: f[1], state: f[2],
status: f[3], image: f[5] });
}
for (const p in g) g[p].sort((a, b) => a.name.localeCompare(b.name));
root.groups = g;
root.projects = Object.keys(g).sort();
}
}
// No daemon, or no permission on the socket: the section is empty.
onExited: code => { if (code !== 0) { root.groups = {}; root.projects = []; } }
}
// --- stats -----------------------------------------------------------
//
// `docker stats --no-stream` samples for about 2s before printing, which
// is the same cadence as the timer; a tick that lands while it is still
// running is a no-op. CPU is docker's own figure, 100% per core.
function _bytes(s) {
const m = s.match(/([\d.]+)\s*([kKMGT]?i?B)/);
if (!m) return -1;
const k = { B: 1, kB: 1e3, KB: 1e3, MB: 1e6, GB: 1e9, TB: 1e12,
KiB: 1024, MiB: 1024 ** 2, GiB: 1024 ** 3, TiB: 1024 ** 4 }[m[2]] ?? 1;
return parseFloat(m[1]) * k;
}
Process {
id: statsProc
command: ["docker", "stats", "--no-stream", "--format",
"{{.ID}}\t{{.CPUPerc}}\t{{.MemUsage}}"]
stdout: StdioCollector {
onStreamFinished: {
const s = {};
for (const line of text.split("\n")) {
const f = line.split("\t");
if (f.length < 3) continue;
const [used, total] = f[2].split("/");
s[f[0]] = { cpu: parseFloat(f[1]), mem: root._bytes(used),
memTotal: root._bytes(total ?? "") };
}
root.stats = s;
}
}
}
// --- actions ---------------------------------------------------------
// ids: the containers to act on; target names them in a failure notice.
function act(ids, target, action) {
actProc.target = target; actProc.action = action;
actProc.command = ["docker", action].concat(ids);
actProc.running = true;
}
Process {
id: actProc
property string target: ""
property string action: ""
stderr: StdioCollector { id: actErr }
onExited: code => {
if (code !== 0)
root.actionFailed(actProc.target, actProc.action,
actErr.text.trim() || `exited ${code}`);
root.refreshList();
}
}
// --- refresh ---------------------------------------------------------
function refreshList() { listProc.running = true; }
Timer {
interval: 2000
running: root.sampling
repeat: true
triggeredOnStart: true
onTriggered: statsProc.running = true
}
// Only lifecycle events: health checks fire exec_* events every few
// seconds per container, which would turn this into a poll. The stream
// dies with the daemon, so it is retried rather than left dead.
Process {
id: events
running: true
command: ["docker", "events", "--filter", "type=container",
"--filter", "event=create", "--filter", "event=start",
"--filter", "event=die", "--filter", "event=pause",
"--filter", "event=unpause", "--filter", "event=destroy",
"--filter", "event=health_status",
"--format", "{{.Action}}"]
stdout: SplitParser { onRead: root.refreshList() }
onRunningChanged: if (running) root.refreshList()
onExited: retry.start()
}
Timer {
id: retry
interval: 10000
onTriggered: events.running = true
}
}
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