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Write each node's health report into its own key of mesh-host_health on a change, so the watchman raises the machine's alerts without the controller (issue 774, the operator's alert table)

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Until now the six machine alerts came from a health message passing to the controller. The report is now kept in the
engine's declared state `health`, key `<node>`, created by the grants part as `acts` is. Only this node's engine
writes it, after comparing it on every look and only when what it says changed; it is read first after a restart.

It carries:
- the network parts (machine-network; network-rewritten through the resolver file part's writer and owner);
- the tunnel's peers, each seen within five minutes or not (network-unreachable);
- the failed units no module owns (machine-units);
- the accounts marked relogin needed (relogin-needed);
- the directories used as found (directory-used-as-found).

The streaks and the time of the look are left out, so a look alone writes nothing. A peer is reported seen or not,
never its handshake time, so a renewed handshake writes nothing.

The layout is internal/link's (NodeHealth) until it moves into mesh-sdk. Pins mesh-sdk 58a8324.

Tests:
- rows in TestOnTheHubAnyFreshPeerIsAHealthyTunnel: the peers, and a change only when one is seen or lost;
- a case in TestAHealthStatementIsSaidOnTheLinkOpenNow: what the report takes, and one write per change across a
  restart;
- the manifest's states in TestTheManifestConsumesTheBackupEvent.
This commit is contained in:
jschoubben
2026-10-29 22:56:14 +01:00
parent cbe8528f91
commit 65fbc1e6f8
10 changed files with 406 additions and 14 deletions
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internal/network/network_test.go
+19 -1
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@@ -302,9 +302,27 @@ func TestOnTheHubAnyFreshPeerIsAHealthyTunnel(t *testing.T) {
f.hs = "A=\t" + itoa(f.now.Add(-time.Hour).Unix()) + "\nB=\t" + itoa(f.now.Unix()) + "\nC=\t0\n"
f.ips = "A=\t10.10.0.2/32\nB=\t10.10.0.3/32\nC=\t10.10.0.4/32\n"
j := f.judge(t)
if st := f.look(t, j); st.State != Healthy {
st := f.look(t, j)
if st.State != Healthy {
t.Fatalf("the hub with one fresh peer is %+v", st.Parts)
}
// Each peer and whether it was seen within five minutes, for the watchman's network-unreachable (issue 774); a
// peer seen again is a change, a handshake renewed alone is not.
want := []Peer{{Key: "A=", Addresses: []string{"10.10.0.2/32"}}, {Key: "B=", Addresses: []string{"10.10.0.3/32"}, Seen: true},
{Key: "C=", Addresses: []string{"10.10.0.4/32"}}}
if !samePeers(st.Peers, want) {
t.Fatalf("the peers are %+v", st.Peers)
}
f.hs = "A=\t" + itoa(f.now.Add(LookEvery).Unix()) + "\nB=\t" + itoa(f.now.Add(LookEvery).Unix()) + "\nC=\t0\n"
f.now = f.now.Add(LookEvery)
if st, changed := j.Look(t.Context()); !changed || !st.Peers[0].Seen {
t.Fatalf("a peer seen again is no change: changed %v, %+v", changed, st.Peers)
}
f.hs = "A=\t" + itoa(f.now.Add(LookEvery).Unix()) + "\nB=\t" + itoa(f.now.Add(LookEvery).Unix()) + "\nC=\t0\n"
f.now = f.now.Add(LookEvery)
if _, changed := j.Look(t.Context()); changed {
t.Fatal("handshakes renewed alone are a change")
}
}
func TestAnUnreadableTunnelIsSaidAndAMissingToolSkipsIt(t *testing.T) {