blob: 76054c4272ad798475ca1907d4c90017d684460e [file] [log] [blame]
# Top-level wrapper script for calling per-machine provisioners.
#
# Given ops.machines."edge01.waw.bgp.wtf".config.passthru.hscloud.provision,
# this script allows to run it by doing:
# $ $(nix-build -A ops.provision) edge01.waw.bgp.wtf
# Or, to first list all available machines by doing:
# $ $(nix-build -A ops.provision)
#
# The main logic of the provisioner script is in machines.nix.
{ hscloud, pkgs, lib, ... }:
with lib; with builtins;
let
# All machines from ops.machines, keyed by FQDN.
machines = filterAttrs (n: _: n != "__readTree") hscloud.ops.machines;
# Machines' provisioner scripts, keyed by machine FQDN.
machineProvisioners = mapAttrs (_: v: v.config.passthru.hscloud.provision) machines;
# List of machine FQDNs.
machineNames = attrNames machines;
# User-friendly list of machines by FQDN.
machineList = concatStringsSep "\n"
(map
(name: " - ${name}")
machineNames);
# Derivation containing bin/provision-FQDN symlinks to machines' provisioners.
forest = pkgs.linkFarm "provision-forest"
(mapAttrsToList
(fqdn: p: { name = "bin/provision-${fqdn}"; path = p; })
machineProvisioners);
in
pkgs.writeScript "provision" ''
#!/bin/sh
name="$1"
usage() {
echo >&2 "Usage: $0 machine|machine.hswaw.net"
echo >&2 "Available machines:"
echo >&2 "${machineList}"
}
if [ -z "$name" ]; then
usage
exit 1
fi
provisioner="${forest}/bin/provision-$name"
if [ ! -e "$provisioner" ]; then
name="$name.hswaw.net"
provisioner="${forest}/bin/provision-$name"
fi
if [ ! -e "$provisioner" ]; then
usage
exit 1
fi
# :^)
echo -ne "\e[34mh \e[31ms \e[33mc l \e[34mo \e[32mu \e[31md \e[0m"
echo ""
echo "Starting provisioner for $name..."
echo ""
echo "Too slow to evaluate? Equivalent faster command line that rebuilds just one node:"
echo " \$(nix-build -A 'ops.machines.\"$name\".config.passthru.hscloud.provision')"
echo ""
echo "Or, if you want to deploy the same configuration on different machines, just run"
echo "this script again without re-evaluating nix:"
echo " $0 $name"
echo ""
exec "$provisioner"
''