zones: introduce Machine.PublicAddresses()

Signed-off-by: Alejandro Mery <amery@jpi.io>

.gitignore

@@ -0,0 +1 @@
+.tmp

Makefile

@@ -0,0 +1,59 @@
+.PHONY: all clean install generate fmt tidy
+.PHONY: FORCE
+
+GO ?= go
+GOFMT ?= gofmt
+GOFMT_FLAGS = -w -l -s
+GOGENERATE_FLAGS = -v
+
+GOPATH ?= $(shell $(GO) env GOPATH)
+GOBIN ?= $(GOPATH)/bin
+
+TOOLSDIR := $(CURDIR)/pkg/tools
+TMPDIR ?= .tmp
+
+REVIVE ?= $(GOBIN)/revive
+REVIVE_CONF ?= $(TOOLSDIR)/revive.toml
+REVIVE_RUN_ARGS ?= -config $(REVIVE_CONF) -formatter friendly
+REVIVE_INSTALL_URL ?= github.com/mgechev/revive
+
+GO_INSTALL_URLS = \
+	$(REVIVE_INSTALL_URL) \
+
+V = 0
+Q = $(if $(filter 1,$V),,@)
+M = $(shell if [ "$$(tput colors 2> /dev/null || echo 0)" -ge 8 ]; then printf "\033[34;1m▶\033[0m"; else printf "▶"; fi)
+
+GO_BUILD = $(GO) build -v
+GO_BUILD_CMD = $(GO_BUILD) -o "$(OUTDIR)"
+
+all: get generate tidy build
+
+install:
+	$Q $(GO) install -v ./cmd/...
+
+clean: ; $(info $(M) cleaning…)
+	rm -rf $(TMPDIR)
+
+$(TMPDIR)/index: $(TOOLSDIR)/gen_index.sh Makefile FORCE ; $(info $(M) generating index…)
+	$Q mkdir -p $(@D)
+	$Q $< > $@~
+	$Q if cmp $@ $@~ 2> /dev/null >&2; then rm $@~; else mv $@~ $@; fi
+
+$(TMPDIR)/gen.mk: $(TOOLSDIR)/gen_mk.sh $(TMPDIR)/index Makefile ; $(info $(M) generating subproject rules…)
+	$Q mkdir -p $(@D)
+	$Q $< $(TMPDIR)/index > $@~
+	$Q if cmp $@ $@~ 2> /dev/null >&2; then rm $@~; else mv $@~ $@; fi
+
+include $(TMPDIR)/gen.mk
+
+fmt: ; $(info $(M) reformatting sources…)
+	$Q find . -name '*.go' | xargs -r $(GOFMT) $(GOFMT_FLAGS)
+
+tidy: fmt
+
+generate: ; $(info $(M) running go:generate…)
+	$Q git grep -l '^//go:generate' | sort -uV | xargs -r -n1 $(GO) generate $(GOGENERATE_FLAGS)
+
+$(REVIVE):
+	$Q $(GO) install -v $(REVIVE_INSTALL_URL)

cmd/jpictl/config.go

@@ -0,0 +1,12 @@
+package main
+
+// Config describes the repository
+type Config struct {
+	Base   string
+	Domain string
+}
+
+var cfg = &Config{
+	Base:   "./m",
+	Domain: "m.jpi.cloud",
+}

cmd/jpictl/dump.go

@@ -0,0 +1,40 @@
+package main
+
+import (
+	"bytes"
+	"os"
+
+	"github.com/burntSushi/toml"
+	"github.com/spf13/cobra"
+
+	"git.jpi.io/amery/jpictl/pkg/zones"
+)
+
+// Command
+var dumpCmd = &cobra.Command{
+	Use:   "dump",
+	Short: "generates a toml representation of the config",
+	RunE: func(_ *cobra.Command, _ []string) error {
+		var buf bytes.Buffer
+
+		m, err := zones.New(cfg.Base, cfg.Domain)
+		if err != nil {
+			return err
+		}
+
+		enc := toml.NewEncoder(&buf)
+		if err = enc.Encode(m); err != nil {
+			return err
+		}
+
+		if _, err = buf.WriteTo(os.Stdout); err != nil {
+			return err
+		}
+
+		return nil
+	},
+}
+
+func init() {
+	rootCmd.AddCommand(dumpCmd)
+}

cmd/jpictl/log.go

@@ -0,0 +1,26 @@
+package main
+
+import (
+	"fmt"
+
+	"darvaza.org/sidecar/pkg/logger/zerolog"
+	"darvaza.org/slog"
+)
+
+var (
+	log = zerolog.New(nil, slog.Debug)
+)
+
+// fatal is a convenience wrapper for slog.Logger.Fatal().Print()
+func fatal(err error, msg string, args ...any) {
+	l := log.Fatal()
+	if err != nil {
+		l = l.WithField(slog.ErrorFieldName, err)
+	}
+	if len(args) > 0 {
+		msg = fmt.Sprintf(msg, args...)
+	}
+	l.Print(msg)
+
+	panic("unreachable")
+}

cmd/jpictl/main.go

@@ -0,0 +1,22 @@
+// Package main implements the jpictl command
+package main
+
+import (
+	"github.com/spf13/cobra"
+)
+
+const (
+	// CmdName is the name of the executable
+	CmdName = "jpictl"
+)
+
+var rootCmd = &cobra.Command{
+	Use:   CmdName,
+	Short: "control tool for jpi.cloud",
+}
+
+func main() {
+	if err := rootCmd.Execute(); err != nil {
+		fatal(err, "")
+	}
+}

go.mod

@@ -1,3 +1,39 @@
 module git.jpi.io/amery/jpictl
 
 go 1.19
+
+require (
+	darvaza.org/resolver v0.5.2
+	darvaza.org/sidecar v0.0.0-20230721122716-b9c54b8adbaf
+	darvaza.org/slog v0.5.2
+	github.com/burntSushi/toml v0.3.1
+	github.com/mgechev/revive v1.3.2
+	github.com/spf13/cobra v1.7.0
+)
+
+require (
+	darvaza.org/core v0.9.5 // indirect
+	darvaza.org/slog/handlers/filter v0.4.4 // indirect
+	darvaza.org/slog/handlers/zerolog v0.4.4 // indirect
+	github.com/BurntSushi/toml v1.3.2 // indirect
+	github.com/chavacava/garif v0.0.0-20230227094218-b8c73b2037b8 // indirect
+	github.com/fatih/color v1.15.0 // indirect
+	github.com/fatih/structtag v1.2.0 // indirect
+	github.com/inconshreveable/mousetrap v1.1.0 // indirect
+	github.com/mattn/go-colorable v0.1.13 // indirect
+	github.com/mattn/go-isatty v0.0.19 // indirect
+	github.com/mattn/go-runewidth v0.0.15 // indirect
+	github.com/mgechev/dots v0.0.0-20210922191527-e955255bf517 // indirect
+	github.com/miekg/dns v1.1.55 // indirect
+	github.com/mitchellh/go-homedir v1.1.0 // indirect
+	github.com/olekukonko/tablewriter v0.0.5 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
+	github.com/rivo/uniseg v0.4.4 // indirect
+	github.com/rs/zerolog v1.30.0 // indirect
+	github.com/spf13/pflag v1.0.5 // indirect
+	golang.org/x/mod v0.12.0 // indirect
+	golang.org/x/net v0.14.0 // indirect
+	golang.org/x/sys v0.11.0 // indirect
+	golang.org/x/text v0.12.0 // indirect
+	golang.org/x/tools v0.12.0 // indirect
+)

go.sum

@@ -0,0 +1,92 @@
+darvaza.org/core v0.9.5 h1:sS5pZFwicaxJIQixEiqkMr9GknVHYL+EbKDMkR/4jDM=
+darvaza.org/core v0.9.5/go.mod h1:O3tHBMlw+xB47uGh5CUx7dXAujBAMmD8BCRFPZmIw54=
+darvaza.org/resolver v0.5.2 h1:VjHhEr/MJBszeDb7tYlXQ9Bsyh4xrDR7Sd10WAmPD6k=
+darvaza.org/resolver v0.5.2/go.mod h1:fFvsVPEFeMzUIWlLG47Go/6uJYtRLb9R8HIgYg3uaxE=
+darvaza.org/sidecar v0.0.0-20230721122716-b9c54b8adbaf h1:ya5ZQicBb/GWll3rlqra8No7oJXks7y1m/cJGYBypv4=
+darvaza.org/sidecar v0.0.0-20230721122716-b9c54b8adbaf/go.mod h1:by+bPsMa7Rxc/ZYG1qBunrtKocv/DkrPBmyFlmq/j2Q=
+darvaza.org/slog v0.5.2 h1:8TG1WyHjOyh2vW6t3pjzZVaWzpko5MIIpeI7LWqHFvs=
+darvaza.org/slog v0.5.2/go.mod h1:HAkEpxTA/mkiLNUXJo5qsCh8EVCtA3evje8GAaCDWHI=
+darvaza.org/slog/handlers/filter v0.4.4 h1:b2e2T9fQzMdJ0ia+f6b7kw9/T9GFwhFCKob/2tqhGGU=
+darvaza.org/slog/handlers/filter v0.4.4/go.mod h1:cQlJWuolB6guLug09sX/8Zrzct++M6SPCGvXR37E7Cc=
+darvaza.org/slog/handlers/zerolog v0.4.4 h1:OR1ASvH1fBCq3t85t4OU6oJPPuqMB1tsDoSpsh6HVJU=
+darvaza.org/slog/handlers/zerolog v0.4.4/go.mod h1:t60TeEbFcMLo74CkXC2S0rKlnwF4ixZyBR4fqIJV1GE=
+github.com/BurntSushi/toml v1.3.2 h1:o7IhLm0Msx3BaB+n3Ag7L8EVlByGnpq14C4YWiu/gL8=
+github.com/BurntSushi/toml v1.3.2/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ=
+github.com/burntSushi/toml v0.3.1 h1:Hu1cOEC2qtKULZJCzym5tyA35bZr3HREuolgiAzMlhY=
+github.com/burntSushi/toml v0.3.1/go.mod h1:sGTquCpRYr9McuHdv0m6YKIhx8DJGJa4t04/Y9pfSio=
+github.com/chavacava/garif v0.0.0-20230227094218-b8c73b2037b8 h1:W9o46d2kbNL06lq7UNDPV0zYLzkrde/bjIqO02eoll0=
+github.com/chavacava/garif v0.0.0-20230227094218-b8c73b2037b8/go.mod h1:gakxgyXaaPkxvLw1XQxNGK4I37ys9iBRzNUx/B7pUCo=
+github.com/coreos/go-systemd/v22 v22.5.0/go.mod h1:Y58oyj3AT4RCenI/lSvhwexgC+NSVTIJ3seZv2GcEnc=
+github.com/cpuguy83/go-md2man/v2 v2.0.2/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/fatih/color v1.15.0 h1:kOqh6YHBtK8aywxGerMG2Eq3H6Qgoqeo13Bk2Mv/nBs=
+github.com/fatih/color v1.15.0/go.mod h1:0h5ZqXfHYED7Bhv2ZJamyIOUej9KtShiJESRwBDUSsw=
+github.com/fatih/structtag v1.2.0 h1:/OdNE99OxoI/PqaW/SuSK9uxxT3f/tcSZgon/ssNSx4=
+github.com/fatih/structtag v1.2.0/go.mod h1:mBJUNpUnHmRKrKlQQlmCrh5PuhftFbNv8Ys4/aAZl94=
+github.com/godbus/dbus/v5 v5.0.4/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5xrFpKfA=
+github.com/inconshreveable/mousetrap v1.1.0 h1:wN+x4NVGpMsO7ErUn/mUI3vEoE6Jt13X2s0bqwp9tc8=
+github.com/inconshreveable/mousetrap v1.1.0/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
+github.com/mattn/go-colorable v0.1.12/go.mod h1:u5H1YNBxpqRaxsYJYSkiCWKzEfiAb1Gb520KVy5xxl4=
+github.com/mattn/go-colorable v0.1.13 h1:fFA4WZxdEF4tXPZVKMLwD8oUnCTTo08duU7wxecdEvA=
+github.com/mattn/go-colorable v0.1.13/go.mod h1:7S9/ev0klgBDR4GtXTXX8a3vIGJpMovkB8vQcUbaXHg=
+github.com/mattn/go-isatty v0.0.14/go.mod h1:7GGIvUiUoEMVVmxf/4nioHXj79iQHKdU27kJ6hsGG94=
+github.com/mattn/go-isatty v0.0.16/go.mod h1:kYGgaQfpe5nmfYZH+SKPsOc2e4SrIfOl2e/yFXSvRLM=
+github.com/mattn/go-isatty v0.0.19 h1:JITubQf0MOLdlGRuRq+jtsDlekdYPia9ZFsB8h/APPA=
+github.com/mattn/go-isatty v0.0.19/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
+github.com/mattn/go-runewidth v0.0.9/go.mod h1:H031xJmbD/WCDINGzjvQ9THkh0rPKHF+m2gUSrubnMI=
+github.com/mattn/go-runewidth v0.0.15 h1:UNAjwbU9l54TA3KzvqLGxwWjHmMgBUVhBiTjelZgg3U=
+github.com/mattn/go-runewidth v0.0.15/go.mod h1:Jdepj2loyihRzMpdS35Xk/zdY8IAYHsh153qUoGf23w=
+github.com/mgechev/dots v0.0.0-20210922191527-e955255bf517 h1:zpIH83+oKzcpryru8ceC6BxnoG8TBrhgAvRg8obzup0=
+github.com/mgechev/dots v0.0.0-20210922191527-e955255bf517/go.mod h1:KQ7+USdGKfpPjXk4Ga+5XxQM4Lm4e3gAogrreFAYpOg=
+github.com/mgechev/revive v1.3.2 h1:Wb8NQKBaALBJ3xrrj4zpwJwqwNA6nDpyJSEQWcCka6U=
+github.com/mgechev/revive v1.3.2/go.mod h1:UCLtc7o5vg5aXCwdUTU1kEBQ1v+YXPAkYDIDXbrs5I0=
+github.com/miekg/dns v1.1.55 h1:GoQ4hpsj0nFLYe+bWiCToyrBEJXkQfOOIvFGFy0lEgo=
+github.com/miekg/dns v1.1.55/go.mod h1:uInx36IzPl7FYnDcMeVWxj9byh7DutNykX4G9Sj60FY=
+github.com/mitchellh/go-homedir v1.1.0 h1:lukF9ziXFxDFPkA1vsr5zpc1XuPDn/wFntq5mG+4E0Y=
+github.com/mitchellh/go-homedir v1.1.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrkLzIz1N1q0pr0=
+github.com/olekukonko/tablewriter v0.0.5 h1:P2Ga83D34wi1o9J6Wh1mRuqd4mF/x/lgBS7N7AbDhec=
+github.com/olekukonko/tablewriter v0.0.5/go.mod h1:hPp6KlRPjbx+hW8ykQs1w3UBbZlj6HuIJcUGPhkA7kY=
+github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
+github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/rivo/uniseg v0.2.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJtxc=
+github.com/rivo/uniseg v0.4.4 h1:8TfxU8dW6PdqD27gjM8MVNuicgxIjxpm4K7x4jp8sis=
+github.com/rivo/uniseg v0.4.4/go.mod h1:FN3SvrM+Zdj16jyLfmOkMNblXMcoc8DfTHruCPUcx88=
+github.com/rs/xid v1.5.0/go.mod h1:trrq9SKmegXys3aeAKXMUTdJsYXVwGY3RLcfgqegfbg=
+github.com/rs/zerolog v1.30.0 h1:SymVODrcRsaRaSInD9yQtKbtWqwsfoPcRff/oRXLj4c=
+github.com/rs/zerolog v1.30.0/go.mod h1:/tk+P47gFdPXq4QYjvCmT5/Gsug2nagsFWBWhAiSi1w=
+github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
+github.com/spf13/cobra v1.7.0 h1:hyqWnYt1ZQShIddO5kBpj3vu05/++x6tJ6dg8EC572I=
+github.com/spf13/cobra v1.7.0/go.mod h1:uLxZILRyS/50WlhOIKD7W6V5bgeIt+4sICxh6uRMrb0=
+github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA=
+github.com/spf13/pflag v1.0.5/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
+github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
+github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
+github.com/stretchr/testify v1.8.2/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
+github.com/stretchr/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcUk=
+golang.org/x/exp v0.0.0-20230713183714-613f0c0eb8a1 h1:MGwJjxBy0HJshjDNfLsYO8xppfqWlA5ZT9OhtUUhTNw=
+golang.org/x/mod v0.12.0 h1:rmsUpXtvNzj340zd98LZ4KntptpfRHwpFOHG188oHXc=
+golang.org/x/mod v0.12.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
+golang.org/x/net v0.14.0 h1:BONx9s002vGdD9umnlX1Po8vOZmrgH34qlHcD1MfK14=
+golang.org/x/net v0.14.0/go.mod h1:PpSgVXXLK0OxS0F31C1/tv6XNguvCrnXIDrFMspZIUI=
+golang.org/x/sync v0.3.0 h1:ftCYgMx6zT/asHUrPw8BLLscYtGznsLAnjq5RH9P66E=
+golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20210927094055-39ccf1dd6fa6/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.11.0 h1:eG7RXZHdqOJ1i+0lgLgCpSXAp6M3LYlAo6osgSi0xOM=
+golang.org/x/sys v0.11.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/text v0.12.0 h1:k+n5B8goJNdU7hSvEtMUz3d1Q6D/XW4COJSJR6fN0mc=
+golang.org/x/text v0.12.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
+golang.org/x/tools v0.12.0 h1:YW6HUoUmYBpwSgyaGaZq1fHjrBjX1rlpZ54T6mu2kss=
+golang.org/x/tools v0.12.0/go.mod h1:Sc0INKfu04TlqNoRA1hgpFZbhYXHPr4V5DzpSBTPqQM=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

pkg/tools/gen_index.sh

@@ -0,0 +1,63 @@
+#!/bin/sh
+
+set -eu
+
+: ${GO:=go}
+
+MODULES=$(find * -name go.mod -exec dirname '{}' \;)
+GROUPS="pkg cmd"
+BASE="$PWD"
+
+mod() {
+	local d="${1:-.}"
+	grep ^module "$d/go.mod" | cut -d' ' -f2
+}
+
+namedir() {
+	local d="$1" g= n=
+
+	if [ "." = "$d" ]; then
+		echo "root"
+		return
+	fi
+
+	for g in $GROUPS; do
+		n="${d#$g/}"
+		if [ "x$n" != "x$d" ]; then
+			echo "$n" | tr '/' '-'
+			return
+		fi
+	done
+
+	echo "$d" | tr '/' '-'
+}
+
+mod_replace() {
+	local d="$1"
+	grep "=>" "$d/go.mod" | sed -n -e "s;^.*\($ROOT_MODULE.*\)[ \t]\+=>.*;\1;p"
+}
+
+gen_index() {
+	local d= n=
+
+	for d; do
+		n=$(namedir "$d")
+		m=$(mod "$d")
+		echo "$n:$d:$m"
+	done
+}
+
+ROOT_MODULE=$(mod)
+INDEX=$(gen_index $MODULES)
+
+echo "$INDEX" | while IFS=: read name dir mod; do
+	deps=
+	for dep in $(mod_replace "$dir"); do
+		depname=$(echo "$INDEX" | grep ":$dep$" | cut -d: -f1 | tr '\n' ',' | sed -e 's|,\+$||g')
+		if [ -n "$depname" ]; then
+			deps="${deps:+$deps,}$depname"
+		fi
+	done
+
+	echo "$name:$dir:$mod:$deps"
+done | sort -V

pkg/tools/gen_mk.sh

@@ -0,0 +1,196 @@
+#!/bin/sh
+
+set -eu
+
+INDEX="$1"
+
+PROJECTS="$(cut -d':' -f1 "$INDEX")"
+COMMANDS="tidy get build test up"
+
+expand() {
+	local prefix="$1" suffix="$2"
+	local x= out=
+	shift 2
+
+	for x; do
+		out="${out:+$out }${prefix}$x${suffix}"
+	done
+
+	echo "$out"
+}
+
+prefixed() {
+	local prefix="${1:+$1-}"
+	shift
+	expand "$prefix" "" "$@"
+}
+
+suffixed() {
+	local suffix="${1:+-$1}"
+	shift
+	expand "" "$suffix" "$@"
+}
+
+# packed remove excess whitespace from lines of commands
+packed() {
+	sed -e 's/^[ \t]\+//' -e 's/[ \t]\+$//' -e '/^$/d;' -e '/^#/d';
+}
+
+# packet_oneline converts a multiline script into packed single-line equivalent
+packed_oneline() {
+	packed | tr '\n' ';' | sed -e 's|;$||' -e 's|then;|then |g' -e 's|;[ \t]*|; |g'
+}
+
+gen_install_tools() {
+	cat <<EOT
+for url in \$(GO_INSTALL_URLS); do \$(GO) install -v \$\$url; done
+EOT
+}
+
+gen_revive_exclude() {
+	local self="$1"
+	local dirs= d=
+
+	dirs="$(cut -d: -f2 "$INDEX" | grep -v '^.$' || true)"
+	if [ "." != "$self" ]; then
+		dirs=$(echo "$dirs" | sed -n -e "s;^$self/\(.*\)$;\1;p")
+	fi
+
+	for d in $dirs; do
+		printf -- "-exclude ./$d/... "
+	done
+}
+
+for cmd in $COMMANDS; do
+	all="$(prefixed $cmd $PROJECTS)"
+	depsx=
+
+	cat <<EOT
+.PHONY: $cmd $all
+$cmd: $all
+
+EOT
+
+	# default calls
+	case "$cmd" in
+	tidy)
+		call="$(cat <<-EOT | packed
+		\$(GO) mod tidy
+
+		# go vet and revive only if there are .go files
+		#
+		$(cat <<-EOL | packed_oneline
+			set -e
+			FILES="\$\$(\$(GO) list -f '{{len .GoFiles}}' ./...)"
+			if [ -n "\$\$FILES" ]; then
+				\$(GO) vet ./...
+				\$(REVIVE) \$(REVIVE_RUN_ARGS) ./...
+			fi
+			EOL
+			)
+		EOT
+		)"
+		depsx="fmt \$(REVIVE)"
+		;;
+	up)
+		call="\$(GO) get -u -v ./...
+\$(GO) mod tidy"
+		;;
+	test)
+		call="\$(GO) $cmd ./..."
+		;;
+	*)
+		call="\$(GO) $cmd -v ./..."
+		;;
+	esac
+
+	case "$cmd" in
+	build|test)
+		sequential=true ;;
+	*)
+		sequential=false ;;
+	esac
+
+	while IFS=: read name dir mod deps; do
+
+		deps=$(echo "$deps" | tr ',' ' ')
+
+		# cd $dir
+		if [ "." = "$dir" ]; then
+			# root
+			cd=
+		else
+			cd="cd '$dir'; "
+		fi
+
+		callx="$call"
+		if [ "$name" = root ]; then
+			# special case
+			case "$cmd" in
+			get)
+				cmdx="get -tags tools"
+				;;
+			up)
+				cmdx="get -tags tools -u"
+				;;
+			*)
+				cmdx=
+				;;
+			esac
+
+			[ -z "$cmdx" ] || cmdx="\$(GO) $cmdx -v ./..."
+
+			if [ "up" = "$cmd" ]; then
+				callx="$cmdx
+\$(GO) mod tidy
+$(gen_install_tools)"
+			elif [ "get" = "$cmd" ]; then
+				callx="$cmdx
+$(gen_install_tools)"
+			elif [ -n "$cmdx" ]; then
+				classx="$cmdx"
+			fi
+
+		fi
+
+		if [ "build" = "$cmd" ]; then
+			# special build flags for cmd/*
+			#
+			callx="$(cat <<-EOL | packed_oneline
+			set -e
+			MOD="\$\$(\$(GO) list -f '{{.ImportPath}}' ./...)"
+			if echo "\$\$MOD" | grep -q -e '.*/cmd/[^/]\+\$\$'; then
+				\$(GO_BUILD_CMD) ./...
+			elif [ -n "\$\$MOD" ]; then
+				\$(GO_BUILD) ./...
+			fi
+			EOL
+			)"
+		fi
+
+		if [ "tidy" = "$cmd" ]; then
+			# exclude submodules when running revive
+			#
+			exclude=$(gen_revive_exclude "$dir")
+			if [ -n "$exclude" ]; then
+				callx=$(echo "$callx" | sed -e "s;\(REVIVE)\);\1 $exclude;")
+			fi
+		fi
+
+		if ! $sequential; then
+			deps=
+		fi
+
+		cat <<EOT
+$cmd-$name:${deps:+ $(prefixed $cmd $deps)}${depsx:+ | $depsx} ; \$(info \$(M) $cmd: $name)
+$(echo "$callx" | sed -e "/^$/d;" -e "s|^|\t\$(Q) $cd|")
+
+EOT
+	done < "$INDEX"
+done
+
+for x in $PROJECTS; do
+	cat <<EOT
+$x: $(suffixed $x get build tidy)
+EOT
+done

pkg/tools/revive.toml

@@ -0,0 +1,35 @@
+ignoreGeneratedHeader = false
+severity = "error"
+confidence = 0.8
+errorCode = 1
+warningCode = 0
+enableAllRules = true
+
+[rule.function-length]
+  arguments = [40,0]
+  severity = "warning"
+[rule.function-result-limit]
+  arguments = [3]
+[rule.argument-limit]
+  arguments = [5]
+[rule.cognitive-complexity]
+  arguments = [7]
+[rule.cyclomatic]
+  arguments = [10]
+[rule.line-length-limit]
+  arguments = [100]
+  severity = "warning"
+[rule.comment-spacings]
+  severity = "warning"
+[rule.empty-lines]
+  severity = "warning"
+
+# Disabled rules
+[rule.max-public-structs]
+  disabled = true
+[rule.file-header]
+  disabled = true
+[rule.add-constant]
+  disabled = true
+[rule.banned-characters]
+  disabled = true

pkg/tools/tools.go

@@ -0,0 +1,7 @@
+//go:build tools
+
+package tools
+
+import (
+	_ "github.com/mgechev/revive"
+)

pkg/zones/machine.go

@@ -0,0 +1,58 @@
+package zones
+
+import (
+	"net/netip"
+	"strconv"
+	"strings"
+	"sync"
+)
+
+// A Machine is a machine on a Zone
+type Machine struct {
+	mu sync.Mutex
+
+	zone *Zone
+	id   int
+	Name string
+
+	PublicAddresses []netip.Addr
+}
+
+func (m *Machine) String() string {
+	return m.Name
+}
+
+// ID return the index within the [Zone] associated to this [Machine]
+func (m *Machine) ID() int {
+	m.mu.Lock()
+	defer m.mu.Unlock()
+
+	if m.id == 0 {
+		zoneName := m.zone.Name
+
+		s := m.Name[len(zoneName)+1:]
+
+		id, err := strconv.ParseInt(s, 10, 8)
+		if err != nil {
+			panic(err)
+		}
+
+		m.id = int(id)
+	}
+
+	return m.id
+}
+
+// FullName returns the Name of the machine including domain name
+func (m *Machine) FullName() string {
+	if domain := m.zone.zones.domain; domain != "" {
+		var s = []string{
+			m.Name,
+			domain,
+		}
+
+		return strings.Join(s, ".")
+	}
+
+	return m.Name
+}

pkg/zones/machine_scan.go

@@ -0,0 +1,26 @@
+package zones
+
+import (
+	"context"
+	"net/netip"
+	"time"
+)
+
+func (m *Machine) lookupNetIP() ([]netip.Addr, error) {
+	timeout := 2 * time.Second
+	ctx, cancel := context.WithTimeout(context.Background(), timeout)
+
+	defer cancel()
+
+	return m.zone.zones.resolver.LookupNetIP(ctx, "ip", m.FullName())
+}
+
+func (m *Machine) updatePublicAddresses() error {
+	addrs, err := m.lookupNetIP()
+	if err != nil {
+		return err
+	}
+
+	m.PublicAddresses = addrs
+	return nil
+}

pkg/zones/scan.go

@@ -0,0 +1,55 @@
+package zones
+
+import (
+	"io/fs"
+)
+
+func (m *Zones) scan() error {
+	// each directory is a zone
+	entries, err := fs.ReadDir(m.dir, ".")
+	if err != nil {
+		return err
+	}
+
+	for _, e := range entries {
+		if e.IsDir() {
+			z := &Zone{
+				zones: m,
+				Name:  e.Name(),
+			}
+
+			if err := z.scan(); err != nil {
+				return err
+			}
+
+			m.Zones = append(m.Zones, z)
+		}
+	}
+
+	return nil
+}
+
+func (z *Zone) scan() error {
+	// each directory is a machine
+	entries, err := fs.ReadDir(z.zones.dir, z.Name)
+	if err != nil {
+		return err
+	}
+
+	for _, e := range entries {
+		if e.IsDir() {
+			m := &Machine{
+				zone: z,
+				Name: e.Name(),
+			}
+
+			if err := m.updatePublicAddresses(); err != nil {
+				return err
+			}
+
+			z.Machines = append(z.Machines, m)
+		}
+	}
+
+	return nil
+}

pkg/zones/zones.go

@@ -0,0 +1,52 @@
+// Package zones contains information about the cluster
+package zones
+
+import (
+	"io/fs"
+	"os"
+
+	"darvaza.org/resolver"
+)
+
+// Zone represents one zone in a cluster
+type Zone struct {
+	zones *Zones
+
+	ID   int
+	Name string
+
+	Machines []*Machine `toml:"machines"`
+}
+
+func (z *Zone) String() string {
+	return z.Name
+}
+
+// Zones represents all zones in a cluster
+type Zones struct {
+	dir      fs.FS
+	resolver resolver.Resolver
+	domain   string
+
+	Zones []*Zone `toml:"zones"`
+}
+
+// NewFS builds a [Zones] tree using the given directory
+func NewFS(dir fs.FS, domain string) (*Zones, error) {
+	z := &Zones{
+		dir:      dir,
+		resolver: resolver.SystemResolver(true),
+		domain:   domain,
+	}
+
+	if err := z.scan(); err != nil {
+		return nil, err
+	}
+
+	return z, nil
+}
+
+// New builds a [Zones] tree using the given directory
+func New(dir, domain string) (*Zones, error) {
+	return NewFS(os.DirFS(dir), domain)
+}