go: re-do the entire thing

This is a mega-change, but attempting to split this up further is
probably not worth the effort.

Summary:

1. Bump up bazel, rules_go, and others.
2. Switch to new go target naming (bye bye go_default_library)
3. Move go deps to go.mod/go.sum, use make gazelle generate from that
4. Bump up Python deps a bit

And also whatever was required to actually get things to work - loads of
small useless changes.

Tested to work on NixOS and Ubuntu 20.04:

   $ bazel build //...
   $ bazel test //...

Change-Id: I8364bdaa1406b9ae4d0385a6b607f3e7989f98a9
Reviewed-on: https://gerrit.hackerspace.pl/c/hscloud/+/1583
Reviewed-by: q3k <q3k@hackerspace.pl>
diff --git a/dc/topo/BUILD.bazel b/dc/topo/BUILD.bazel
index 83673e3..3cb0fb7 100644
--- a/dc/topo/BUILD.bazel
+++ b/dc/topo/BUILD.bazel
@@ -1,7 +1,7 @@
 load("@io_bazel_rules_go//go:def.bzl", "go_binary", "go_library")
 
 go_library(
-    name = "go_default_library",
+    name = "topo_lib",
     srcs = [
         "main.go",
         "service.go",
@@ -9,23 +9,23 @@
     importpath = "code.hackerspace.pl/hscloud/dc/topo",
     visibility = ["//visibility:private"],
     deps = [
-        "//dc/proto:go_default_library",
-        "//dc/topo/assets:go_default_library",
-        "//dc/topo/graph:go_default_library",
-        "//dc/topo/proto:go_default_library",
-        "//dc/topo/state:go_default_library",
-        "//go/mirko:go_default_library",
-        "//go/statusz:go_default_library",
-        "@com_github_digitalocean_go_netbox//netbox:go_default_library",
-        "@com_github_digitalocean_go_netbox//netbox/client:go_default_library",
-        "@com_github_golang_glog//:go_default_library",
+        "//dc/proto",
+        "//dc/topo/assets",
+        "//dc/topo/graph",
+        "//dc/topo/proto",
+        "//dc/topo/state",
+        "//go/mirko",
+        "//go/statusz",
+        "@com_github_digitalocean_go_netbox//netbox",
+        "@com_github_digitalocean_go_netbox//netbox/client",
+        "@com_github_fvbommel_sortorder//:sortorder",
+        "@com_github_golang_glog//:glog",
         "@com_github_golang_protobuf//proto:go_default_library",
-        "@ml_vbom_util//sortorder:go_default_library",
     ],
 )
 
 go_binary(
     name = "topo",
-    embed = [":go_default_library"],
+    embed = [":topo_lib"],
     visibility = ["//visibility:public"],
 )
diff --git a/dc/topo/assets/BUILD.bazel b/dc/topo/assets/BUILD.bazel
index 401487b..21d49f9 100644
--- a/dc/topo/assets/BUILD.bazel
+++ b/dc/topo/assets/BUILD.bazel
@@ -2,16 +2,16 @@
 load("@io_bazel_rules_go//extras:embed_data.bzl", "go_embed_data")
 
 go_embed_data(
-    name = "assets",
+    name = "assets_embed",
     srcs = glob(["*.js"]),
-    package = "assets",
     flatten = True,
+    package = "assets",
 )
 
 # keep
 go_library(
-    name = "go_default_library",
-    srcs = [":assets"],
+    name = "assets",
+    srcs = [":assets_embed"],
     importpath = "code.hackerspace.pl/hscloud/dc/topo/assets",
     visibility = ["//dc/topo:__pkg__"],
 )
diff --git a/dc/topo/graph/BUILD.bazel b/dc/topo/graph/BUILD.bazel
index 26a5fc2..fd93c4c 100644
--- a/dc/topo/graph/BUILD.bazel
+++ b/dc/topo/graph/BUILD.bazel
@@ -1,15 +1,15 @@
 load("@io_bazel_rules_go//go:def.bzl", "go_library")
 
 go_library(
-    name = "go_default_library",
+    name = "graph",
     srcs = ["graph.go"],
     importpath = "code.hackerspace.pl/hscloud/dc/topo/graph",
     visibility = ["//visibility:public"],
     deps = [
-        "//dc/topo/proto:go_default_library",
-        "@com_github_digitalocean_go_netbox//netbox/client:go_default_library",
-        "@com_github_digitalocean_go_netbox//netbox/client/dcim:go_default_library",
-        "@com_github_digitalocean_go_netbox//netbox/models:go_default_library",
-        "@com_github_golang_glog//:go_default_library",
+        "//dc/topo/proto",
+        "@com_github_digitalocean_go_netbox//netbox/client",
+        "@com_github_digitalocean_go_netbox//netbox/client/dcim",
+        "@com_github_digitalocean_go_netbox//netbox/models",
+        "@com_github_golang_glog//:glog",
     ],
 )
diff --git a/dc/topo/graph/graph.go b/dc/topo/graph/graph.go
index 4d31f39..288d306 100644
--- a/dc/topo/graph/graph.go
+++ b/dc/topo/graph/graph.go
@@ -142,7 +142,7 @@
 
 }
 
-func (g *Graph) FeedFromNetbox(ctx context.Context, nb *client.NetBox) error {
+func (g *Graph) FeedFromNetbox(ctx context.Context, nb *client.NetBoxAPI) error {
 	// Clear all connections first, because it's easier that way.
 	for _, machine := range g.Machines {
 		for _, port := range machine.Ports {
@@ -169,18 +169,18 @@
 			return fmt.Errorf("while querying information about %q: %v", machine.Name, err)
 		}
 		for _, connection := range res.Payload.Results {
-			ia := connection.InterfaceA
-			ib := connection.InterfaceB
+			ia := connection.Interfacea
+			ib := connection.Interfaceb
 			if ia == nil || ib == nil {
 				continue
 			}
 
 			// Find which way this thing actually connects.
-			var thisSide, otherSide *models.PeerInterface
-			if ia.Device.Name == machine.Name {
+			var thisSide, otherSide *models.NestedInterface
+			if ia.Device.Name != nil && *ia.Device.Name == machine.Name {
 				thisSide = ia
 				otherSide = ib
-			} else if ib.Device.Name == machine.Name {
+			} else if ib.Device.Name != nil && *ib.Device.Name == machine.Name {
 				thisSide = ib
 				otherSide = ia
 			} else {
@@ -192,9 +192,9 @@
 			if !ok {
 				continue
 			}
-			sw, ok := g.Switches[otherSide.Device.Name]
+			sw, ok := g.Switches[*otherSide.Device.Name]
 			if !ok {
-				glog.Warningf("Machine %q port %q is managed but connected to unknown device %q", machine.Name, thisPort.Name, otherSide.Device.Name)
+				glog.Warningf("Machine %q port %q is managed but connected to unknown device %q", machine.Name, thisPort.Name, *otherSide.Device.Name)
 				continue
 			}
 			otherPort, ok := sw.Ports[*otherSide.Name]
diff --git a/dc/topo/proto/BUILD.bazel b/dc/topo/proto/BUILD.bazel
index 3caae5b..488dea9 100644
--- a/dc/topo/proto/BUILD.bazel
+++ b/dc/topo/proto/BUILD.bazel
@@ -1,3 +1,4 @@
+load("@rules_proto//proto:defs.bzl", "proto_library")
 load("@io_bazel_rules_go//go:def.bzl", "go_library")
 load("@io_bazel_rules_go//proto:def.bzl", "go_proto_library")
 
@@ -15,7 +16,7 @@
 )
 
 go_library(
-    name = "go_default_library",
+    name = "proto",
     embed = [":proto_go_proto"],
     importpath = "code.hackerspace.pl/hscloud/dc/topo/proto",
     visibility = ["//visibility:public"],
diff --git a/dc/topo/service.go b/dc/topo/service.go
index 84eda5d..97a74dd 100644
--- a/dc/topo/service.go
+++ b/dc/topo/service.go
@@ -7,7 +7,7 @@
 	"sort"
 	"strings"
 
-	"vbom.ml/util/sortorder"
+	"github.com/fvbommel/sortorder"
 
 	"code.hackerspace.pl/hscloud/go/mirko"
 	"code.hackerspace.pl/hscloud/go/statusz"
diff --git a/dc/topo/state/BUILD.bazel b/dc/topo/state/BUILD.bazel
index fefb3ef..6cb8d59 100644
--- a/dc/topo/state/BUILD.bazel
+++ b/dc/topo/state/BUILD.bazel
@@ -1,14 +1,14 @@
 load("@io_bazel_rules_go//go:def.bzl", "go_library")
 
 go_library(
-    name = "go_default_library",
+    name = "state",
     srcs = ["state.go"],
     importpath = "code.hackerspace.pl/hscloud/dc/topo/state",
     visibility = ["//visibility:public"],
     deps = [
-        "//dc/proto:go_default_library",
-        "//dc/topo/proto:go_default_library",
-        "//go/pki:go_default_library",
+        "//dc/proto",
+        "//dc/topo/proto",
+        "//go/pki",
         "@org_golang_google_grpc//:go_default_library",
     ],
 )