nilsandClaude Sonnet 5.5
dcef7665b4
router.* schema (wan, lans, dns.forwarders) compiled to systemd-networkd, a generated nftables ruleset with NAT, Kea DHCPv4 and Unbound, plus build-time assertions against lock-out and interface conflicts. tests/basic.nix is a three-node VM test (upstream/router/client) covering WAN DHCP, LAN DHCP and DNS, NAT, WAN-deny and LAN SSH/ping. `nix run .#lab` boots the same topology in tmux with one console pane per VM and the driver REPL. Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
45 lines
2.0 KiB
Nix
45 lines
2.0 KiB
Nix
# Shell script for `nix run .#lab` (see flake.nix).
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{ lib, driver, nodes }:
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''
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sock=nixos-router-lab
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log=$(mktemp -t nixos-router-lab.XXXXXX)
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trap 'tmux -L $sock kill-server 2>/dev/null || true; rm -f "$log"' EXIT
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tmux -L $sock kill-server 2>/dev/null || true
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# Bottom pane: the test-driver REPL. `script` keeps it on a tty while
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# logging everything it prints, which the per-VM panes below filter.
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# When the REPL exits, take the whole session down.
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repl=$(tmux -L $sock new-session -d -x 220 -y 60 -s lab -P -F '#{pane_id}' \
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"script -qfc '${driver}/bin/nixos-test-driver --interactive' '$log'; tmux -L $sock kill-server")
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tmux -L $sock set -g pane-border-status top
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tmux -L $sock select-pane -t "$repl" -T repl
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# Top row: one pane per VM, console lines only (prefixed "<name> #").
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prev="$repl"
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first=1
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remaining=${toString (builtins.length nodes - 1)}
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for node in ${lib.escapeShellArgs nodes}; do
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cmd="tail -F '$log' 2>/dev/null | grep -a --line-buffered -E \"(^|\\[[0-9;]*m)$node #\""
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if [ "$first" = 1 ]; then
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prev=$(tmux -L $sock split-window -vb -l 65% -t "$prev" -P -F '#{pane_id}' "$cmd")
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first=0
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else
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# Give the new pane its share of the pane being split, so the row ends up even.
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prev=$(tmux -L $sock split-window -h -l "$((100 * remaining / (remaining + 1)))%" -t "$prev" -P -F '#{pane_id}' "$cmd")
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remaining=$((remaining - 1))
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fi
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tmux -L $sock select-pane -t "$prev" -T "$node"
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done
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# Boot the VMs once the REPL is ready, and leave a reminder at the prompt.
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for _ in $(seq 60); do
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tmux -L $sock capture-pane -p -t "$repl" | grep -q CPython && break
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sleep 0.5
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done
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tmux -L $sock send-keys -t "$repl" 'start_all()' Enter
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tmux -L $sock send-keys -t "$repl" -l 'print("router.shell_interact() | client.succeed(\"ip a\") | test_script() | Ctrl-D quits, Ctrl-b d detaches")'
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tmux -L $sock send-keys -t "$repl" Enter
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tmux -L $sock select-pane -t "$repl"
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tmux -L $sock attach -t lab
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''
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