Implement start and stop functions

[ydlr]

This allows DigitalOcean droplets to be brought up and down with nixops start and nixops stop

[Kiwi]

I had to make a few changes to get this to work again (DO did some breaking changes...that I was already working on in one of my branch) I'll try and get the fixes for this up soon. Thanks for the tests!

[Kiwi]

this is what i had a few weeks ago

diff --git a/nixops_digitalocean/backends/droplet.py b/nixops_digitalocean/backends/droplet.py
index fa71cbc..f38448f 100644
--- a/nixops_digitalocean/backends/droplet.py
+++ b/nixops_digitalocean/backends/droplet.py
@@ -127,7 +127,8 @@ class DropletState(MachineState[DropletDefinition]):

         networking = {
             "defaultGateway": self.default_gateway,
-            "nameservers": ["8.8.8.8"],  # default provided by DO
+            "nameservers": ["67.207.67.2", "67.207.67.3"],  # default provided by DO
+            #("dhcpcd", "enable"): False,
             ("interfaces", "ens3", "ipv4", "addresses"): [
                 {"address": self.public_ipv4, "prefixLength": prefix_len(self.netmask)}
             ],
@@ -236,9 +237,9 @@ class DropletState(MachineState[DropletDefinition]):
         self.public_ipv4 = droplet.ip_address
         self.log_end("{}".format(droplet.ip_address))

-        # Not sure when I'd have more than one interface from the DO
-        # API but networks is an array nevertheless.
-        self.default_gateway = droplet.networks["v4"][0]["gateway"]
+        for n in droplet.networks["v4"]:
+            if n["ip_address"] == self.public_ipv4:
+                self.default_gateway = n["gateway"]
         self.netmask = droplet.networks["v4"][0]["netmask"]

         first_ipv6 = {}
diff --git a/nixops_digitalocean/data/nixos-infect b/nixops_digitalocean/data/nixos-infect
index f7bcce6..7c315f2 100644
--- a/nixops_digitalocean/data/nixos-infect
+++ b/nixops_digitalocean/data/nixos-infect
@@ -98,6 +98,7 @@ EOF
     ];
     defaultGateway = "${gateway}";
     defaultGateway6 = "${gateway6}";
+    #dhcpcd.enable = false;
     interfaces = {
       ens3 = {
         ipv4.addresses = [$(for a in ${ens3_ip4s[@]}; do echo -n "
@@ -158,13 +159,16 @@ curl -L https://nixos.org/nix/install | sh

 source ~/.nix-profile/etc/profile.d/nix.sh

-[ -z "$NIX_CHANNEL" ] && NIX_CHANNEL="nixos-19.03"
+[ -z "$NIX_CHANNEL" ] && NIX_CHANNEL="nixos-20.09"
 nix-channel --remove nixpkgs
 nix-channel --add "https://nixos.org/channels/$NIX_CHANNEL" nixos
 nix-channel --update

 export NIXOS_CONFIG=/etc/nixos/configuration.nix

+export LANGUAGE="C"
+export LC_ALL="C"
+
 nix-env --set \
   -I nixpkgs=$HOME/.nix-defexpr/channels/nixos \
   -f '<nixpkgs/nixos>' \

[Kiwi]

@ydlr do you think this should be good to go? and this has the commits from the other PR too right?

[ydlr]

Yes. Should be good to go. It does include everything from the other PR, too. All the tests passed.