feat: init + crude start command
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5 changed files with 255 additions and 0 deletions
2
.gitignore
vendored
2
.gitignore
vendored
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@ -21,3 +21,5 @@
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# Go workspace file
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go.work
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# Build artifacts
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spud
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18
go.mod
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18
go.mod
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@ -0,0 +1,18 @@
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module spud
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go 1.22.2
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require (
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github.com/goccy/go-yaml v1.11.3
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github.com/spf13/cobra v1.8.0
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)
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require (
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github.com/fatih/color v1.10.0 // indirect
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github.com/inconshreveable/mousetrap v1.1.0 // indirect
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github.com/mattn/go-colorable v0.1.8 // indirect
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github.com/mattn/go-isatty v0.0.12 // indirect
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github.com/spf13/pflag v1.0.5 // indirect
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golang.org/x/sys v0.6.0 // indirect
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golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 // indirect
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)
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36
go.sum
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36
go.sum
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@ -0,0 +1,36 @@
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github.com/cpuguy83/go-md2man/v2 v2.0.3/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
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github.com/fatih/color v1.10.0 h1:s36xzo75JdqLaaWoiEHk767eHiwo0598uUxyfiPkDsg=
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github.com/fatih/color v1.10.0/go.mod h1:ELkj/draVOlAH/xkhN6mQ50Qd0MPOk5AAr3maGEBuJM=
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github.com/go-playground/locales v0.13.0 h1:HyWk6mgj5qFqCT5fjGBuRArbVDfE4hi8+e8ceBS/t7Q=
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github.com/go-playground/locales v0.13.0/go.mod h1:taPMhCMXrRLJO55olJkUXHZBHCxTMfnGwq/HNwmWNS8=
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github.com/go-playground/universal-translator v0.17.0 h1:icxd5fm+REJzpZx7ZfpaD876Lmtgy7VtROAbHHXk8no=
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github.com/go-playground/universal-translator v0.17.0/go.mod h1:UkSxE5sNxxRwHyU+Scu5vgOQjsIJAF8j9muTVoKLVtA=
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github.com/go-playground/validator/v10 v10.4.1 h1:pH2c5ADXtd66mxoE0Zm9SUhxE20r7aM3F26W0hOn+GE=
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github.com/go-playground/validator/v10 v10.4.1/go.mod h1:nlOn6nFhuKACm19sB/8EGNn9GlaMV7XkbRSipzJ0Ii4=
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github.com/goccy/go-yaml v1.11.3 h1:B3W9IdWbvrUu2OYQGwvU1nZtvMQJPBKgBUuweJjLj6I=
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github.com/goccy/go-yaml v1.11.3/go.mod h1:wKnAMd44+9JAAnGQpWVEgBzGt3YuTaQ4uXoHvE4m7WU=
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github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38=
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github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
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github.com/inconshreveable/mousetrap v1.1.0 h1:wN+x4NVGpMsO7ErUn/mUI3vEoE6Jt13X2s0bqwp9tc8=
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github.com/inconshreveable/mousetrap v1.1.0/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
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github.com/leodido/go-urn v1.2.0 h1:hpXL4XnriNwQ/ABnpepYM/1vCLWNDfUNts8dX3xTG6Y=
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github.com/leodido/go-urn v1.2.0/go.mod h1:+8+nEpDfqqsY+g338gtMEUOtuK+4dEMhiQEgxpxOKII=
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github.com/mattn/go-colorable v0.1.8 h1:c1ghPdyEDarC70ftn0y+A/Ee++9zz8ljHG1b13eJ0s8=
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github.com/mattn/go-colorable v0.1.8/go.mod h1:u6P/XSegPjTcexA+o6vUJrdnUu04hMope9wVRipJSqc=
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github.com/mattn/go-isatty v0.0.12 h1:wuysRhFDzyxgEmMf5xjvJ2M9dZoWAXNNr5LSBS7uHXY=
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github.com/mattn/go-isatty v0.0.12/go.mod h1:cbi8OIDigv2wuxKPP5vlRcQ1OAZbq2CE4Kysco4FUpU=
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github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
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github.com/spf13/cobra v1.8.0 h1:7aJaZx1B85qltLMc546zn58BxxfZdR/W22ej9CFoEf0=
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github.com/spf13/cobra v1.8.0/go.mod h1:WXLWApfZ71AjXPya3WOlMsY9yMs7YeiHhFVlvLyhcho=
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github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA=
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github.com/spf13/pflag v1.0.5/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
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golang.org/x/crypto v0.7.0 h1:AvwMYaRytfdeVt3u6mLaxYtErKYjxA2OXjJ1HHq6t3A=
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golang.org/x/crypto v0.7.0/go.mod h1:pYwdfH91IfpZVANVyUOhSIPZaFoJGxTFbZhFTx+dXZU=
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golang.org/x/sys v0.0.0-20200116001909-b77594299b42/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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golang.org/x/sys v0.0.0-20200223170610-d5e6a3e2c0ae/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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golang.org/x/sys v0.6.0 h1:MVltZSvRTcU2ljQOhs94SXPftV6DCNnZViHeQps87pQ=
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golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
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golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 h1:go1bK/D/BFZV2I8cIQd1NKEZ+0owSTG1fDTci4IqFcE=
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golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
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gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
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gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
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92
main.go
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92
main.go
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package main
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import (
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"github.com/goccy/go-yaml"
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"github.com/spf13/cobra"
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"log"
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"os"
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)
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type VolumeDefinition struct {
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Name string `yaml:"name"`
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}
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type VolumeConfiguration struct {
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Name string `yaml:"name"`
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Container string `yaml:"container"`
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Host string `yaml:"host"`
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}
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type ContainerDefinition struct {
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Name string `yaml:"name"`
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Image string `yaml:"image"`
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Volumes []VolumeConfiguration `yaml:"volumes"`
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ExtraArgs []string `yaml:"extra-args"`
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}
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type ServiceDefinition struct {
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Name string `yaml:"name"`
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Volumes []VolumeDefinition `yaml:"volumes"`
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Containers []ContainerDefinition `yaml:"containers"`
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}
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func GetServiceDefinitionFromFile(path string) ServiceDefinition {
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var definition ServiceDefinition
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defData, err := os.ReadFile(path)
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// TODO: Bubble up error?
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if err != nil {
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log.Fatalf("Could not parse service configuration at %s: %s", path, err)
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}
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if err = yaml.Unmarshal(defData, &definition); err != nil {
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log.Fatalf("Could not unpack service configuration: %s", err)
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}
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return definition
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}
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func CreateService(definition ServiceDefinition) {
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var err error
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err = CreatePod(definition.Name)
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if err != nil {
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log.Fatalf("%s", err)
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}
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knownVolumes := map[string]string{}
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for _, volume := range definition.Volumes {
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namespacedName := definition.Name + "_" + volume.Name
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CreateVolume(namespacedName, true)
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knownVolumes[volume.Name] = namespacedName
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}
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for _, container := range definition.Containers {
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if err = CreateContainer(container, knownVolumes, definition.Name); err != nil {
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log.Fatalf("%s", err)
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}
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}
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}
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var cli = &cobra.Command{
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Use: "spud",
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Short: "A not-entirely-terrible-way to manage self-hosted services.",
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}
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var start = &cobra.Command{
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Use: "start",
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Short: "Creates or updates a service based on the provided definition.",
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Run: func(cmd *cobra.Command, args []string) {
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pathProvided := args[0]
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def := GetServiceDefinitionFromFile(pathProvided)
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CreateService(def)
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},
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}
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func main() {
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cli.AddCommand(start)
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cli.Execute()
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}
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107
podman.go
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107
podman.go
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package main
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import (
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"log"
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"os/exec"
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)
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/*
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* Creates a Podman volume of name `name` if it does not exist.
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*
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* If the volume exists, then behaviour depends on `existsOk`:
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* - If `existsOk` is truthy, then the already-exists error is ignored and
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* nothing is done;
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* - Else, an error is returned.
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*/
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func CreateVolume(name string, existsOk bool) error {
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args := []string{"volume", "create", name}
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if existsOk {
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args = append(args, "--ignore")
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}
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command := exec.Command("podman", args...)
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if err := command.Run(); err != nil {
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return err
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}
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log.Printf("✅ Created volume \"%s\".", name)
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return nil
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}
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/*
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* Creates a Podman pod to keep related containers together.
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*
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*/
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func CreatePod(name string) error {
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args := []string{"pod", "create", "--replace", name}
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command := exec.Command("podman", args...)
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if err := command.Run(); err != nil {
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return err
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}
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log.Printf("✅ Created pod \"%s\".", name)
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return nil
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}
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/*
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* Creates individual containers.
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*/
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func CreateContainer(definition ContainerDefinition, knownVolumes map[string]string, service string) error {
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namespacedContainerName := service + "_" + definition.Name
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args := []string{
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"run",
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"-d",
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"--name",
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namespacedContainerName,
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"--pod",
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service,
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"--replace",
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}
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for _, volume := range definition.Volumes {
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var host string
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container := volume.Container
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if volume.Name != "" {
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namespacedName := service + "_" + volume.Name
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host = namespacedName
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} else if volume.Host != "" {
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host = volume.Host
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} else {
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log.Fatal("Invalid volume source configuration")
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}
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arg := []string{"-v", host + ":" + container}
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args = append(args, arg...)
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}
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args = append(args, definition.Image)
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for _, extra := range definition.ExtraArgs {
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args = append(args, extra)
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}
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command := exec.Command("podman", args...)
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if err := command.Start(); err != nil {
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log.Fatal("Failed to start")
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return err
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}
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if err := command.Wait(); err != nil {
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return err
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}
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log.Printf("✅ Started container \"%s\".", namespacedContainerName)
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return nil
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}
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