50 lines
2 KiB
Nix
50 lines
2 KiB
Nix
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{ pkgs, makeTest }:
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with pkgs.lib;
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{
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makeEc2Test = { name, image, userData, script, hostname ? "ec2-instance", sshPublicKey ? null }:
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let
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metaData = pkgs.stdenv.mkDerivation {
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name = "metadata";
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buildCommand = ''
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mkdir -p $out/1.0/meta-data
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ln -s ${pkgs.writeText "userData" userData} $out/1.0/user-data
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echo "${hostname}" > $out/1.0/meta-data/hostname
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echo "(unknown)" > $out/1.0/meta-data/ami-manifest-path
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'' + optionalString (sshPublicKey != null) ''
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mkdir -p $out/1.0/meta-data/public-keys/0
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ln -s ${pkgs.writeText "sshPublicKey" sshPublicKey} $out/1.0/meta-data/public-keys/0/openssh-key
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'';
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};
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in makeTest {
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name = "ec2-" + name;
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nodes = {};
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testScript =
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''
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my $imageDir = ($ENV{'TMPDIR'} // "/tmp") . "/vm-state-machine";
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mkdir $imageDir, 0700;
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my $diskImage = "$imageDir/machine.qcow2";
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system("qemu-img create -f qcow2 -o backing_file=${image} $diskImage") == 0 or die;
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system("qemu-img resize $diskImage 10G") == 0 or die;
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# Note: we use net=169.0.0.0/8 rather than
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# net=169.254.0.0/16 to prevent dhcpcd from getting horribly
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# confused. (It would get a DHCP lease in the 169.254.*
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# range, which it would then configure and prompty delete
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# again when it deletes link-local addresses.) Ideally we'd
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# turn off the DHCP server, but qemu does not have an option
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# to do that.
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my $startCommand = "qemu-kvm -m 1024";
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$startCommand .= " -device virtio-net-pci,netdev=vlan0";
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$startCommand .= " -netdev 'user,id=vlan0,net=169.0.0.0/8,guestfwd=tcp:169.254.169.254:80-cmd:${pkgs.micro-httpd}/bin/micro_httpd ${metaData}'";
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$startCommand .= " -drive file=$diskImage,if=virtio,werror=report";
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$startCommand .= " \$QEMU_OPTS";
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my $machine = createMachine({ startCommand => $startCommand });
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${script}
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'';
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};
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}
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