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EmyrkEmyrk
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Initial commit of some concept builder stuff
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‎examples/builder/builder.go

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package builder
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import (
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"archive/tar"
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"bytes"
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"embed"
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_ "embed"
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"golang.org/x/xerrors"
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"html/template"
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"strings"
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"time"
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)
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//go:embed templates/*.tmpl
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var templates embed.FS
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func buildTemplate(input ContainerInput) (file, error) {
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tpl, err := template.ParseFS(templates, "templates/*.tmpl")
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if err != nil {
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return file{}, xerrors.Errorf("parse template: %w", err)
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}
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tpl = tpl.Funcs(template.FuncMap{
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"join": strings.Join,
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})
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var buf bytes.Buffer
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// TODO: Change the name based on the input
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err = tpl.ExecuteTemplate(&buf, "docker", input)
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if err != nil {
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return file{}, xerrors.Errorf("execute template: %w", err)
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}
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return file{
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name: "main.tf",
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content: buf.Bytes(),
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}, nil
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}
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type file struct {
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name string
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content []byte
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}
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func writeFiles(w *tar.Writer, files ...file) error {
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for _, f := range files {
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err := w.WriteHeader(&tar.Header{
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Typeflag: 0,
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Name: f.name,
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Size: int64(len(f.content)),
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Mode: 0644,
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ModTime: time.Now(),
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})
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if err != nil {
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return err
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}
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}
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return nil
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}
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func BuildReadme() {
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}
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func dockerTemplate() (*template.Template, error) {
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return template.ParseFS(templates, "templates/docker.tpl")
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}
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type ContainerInput struct {
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DockerImage string `json:"docker-image"`
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}
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type KubernetesInput struct {
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ContainerInput
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}
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func BuildDocker(input interface{}) {
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}
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func build(input interface{}) (string, error) {
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tpl, err := dockerTemplate()
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if err != nil {
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return "", err
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}
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var buf bytes.Buffer
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err = tpl.Execute(&buf, input)
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if err != nil {
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return "", err
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}
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return buf.String(), nil
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}

‎examples/builder/builder_internal_test.go

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package builder
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import (
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"fmt"
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"testing"
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"github.com/stretchr/testify/require"
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)
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func TestBuilder(t *testing.T) {
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out, err := buildTemplate(ContainerInput{})
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require.NoError(t, err)
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fmt.Println(out)
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}

‎examples/builder/templates/docker.tmpl

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{{ define "docker" }}
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terraform {
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required_providers {
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coder = {
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source = "coder/coder"
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version = "0.6.12"
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}
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docker = {
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source = "kreuzwerker/docker"
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version = "~> 3.0.1"
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}
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}
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}
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provider "docker" {
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}
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provider "coder" {
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}
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data "coder_workspace" "me" {
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}
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data "coder_provisioner" "me" {
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}
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resource "coder_agent" "main" {
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arch = data.coder_provisioner.me.arch
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os = "linux"
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login_before_ready = false
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startup_script_timeout = 180
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startup_script = <<-EOT
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set -e
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code-server --auth none >/tmp/code-server.log 2>&1 &
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EOT
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# These environment variables allow you to make Git commits right away after creating a
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# workspace. Note that they take precedence over configuration defined in ~/.gitconfig!
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# You can remove this block if you'd prefer to configure Git manually or using
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# dotfiles. (see docs/dotfiles.md)
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env = {
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GIT_AUTHOR_NAME = "${data.coder_workspace.me.owner}"
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GIT_COMMITTER_NAME = "${data.coder_workspace.me.owner}"
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GIT_AUTHOR_EMAIL = "${data.coder_workspace.me.owner_email}"
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GIT_COMMITTER_EMAIL = "${data.coder_workspace.me.owner_email}"
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}
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}
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{{ if .Data.CodeServer.Enabled }}
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resource "coder_app" "code-server" {
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agent_id = coder_agent.main.id
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slug = "code-server"
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display_name = "code-server"
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url = "http://localhost:8080/?folder=/home/coder"
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icon = "/icon/code.svg"
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subdomain = false
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share = "owner"
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healthcheck {
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url = "http://localhost:8080/healthz"
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interval = 3
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threshold = 10
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}
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}
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{{ end }}
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resource "docker_volume" "home_volume" {
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name = "coder-${data.coder_workspace.me.id}-home"
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# Protect the volume from being deleted due to changes in attributes.
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lifecycle {
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ignore_changes = all
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}
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# Add labels in Docker to keep track of orphan resources.
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labels {
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label = "coder.owner"
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value = data.coder_workspace.me.owner
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}
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labels {
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label = "coder.owner_id"
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value = data.coder_workspace.me.owner_id
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}
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labels {
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label = "coder.workspace_id"
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value = data.coder_workspace.me.id
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}
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# This field becomes outdated if the workspace is renamed but can
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# be useful for debugging or cleaning out dangling volumes.
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labels {
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label = "coder.workspace_name_at_creation"
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value = data.coder_workspace.me.name
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}
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}
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resource "docker_container" "workspace" {
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count = data.coder_workspace.me.start_count
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image = "{{ .Data.ImageURL }}"
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# Uses lower() to avoid Docker restriction on container names.
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name = "coder-${data.coder_workspace.me.owner}-${lower(data.coder_workspace.me.name)}"
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# Hostname makes the shell more user friendly: coder@my-workspace:~$
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hostname = data.coder_workspace.me.name
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# Use the docker gateway if the access URL is 127.0.0.1
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entrypoint = ["sh", "-c", replace(coder_agent.main.init_script, "/localhost|127\\.0\\.0\\.1/", "host.docker.internal")]
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env = ["CODER_AGENT_TOKEN=${coder_agent.main.token}"]
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host {
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host = "host.docker.internal"
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ip = "host-gateway"
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}
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volumes {
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contoainer_path = "/home/coder/"
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volume_name = docker_volume.home_volume.name
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read_only = false
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}
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# Add labels in Docker to keep track of orphan resources.
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labels {
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label = "coder.owner"
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value = data.coder_workspace.me.owner
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}
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labels {
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label = "coder.owner_id"
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value = data.coder_workspace.me.owner_id
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}
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labels {
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label = "coder.workspace_id"
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value = data.coder_workspace.me.id
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}
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labels {
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label = "coder.workspace_name"
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value = data.coder_workspace.me.name
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}
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}
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{{ end }}

‎examples/builder/templates/readme.tmpl

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{{- define "readme" -}}
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---
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name: {{ .Data.Readme.Name }}
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description: {{ .Data.Readme.Desc }}
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tags: [{{ join .Data.Readme.Tags "," }}]
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icon: /icon/docker.png
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---
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# {{ .Template.Platform }} Template
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// TODO: Put in a url to get back to the wizard with pre-filled values
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{{ end }}

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