Complete rewrite of the bootstraper tool
This commit is contained in:
parent
5085bd4d69
commit
09b8667d00
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@ -14,4 +14,4 @@
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# Dependency directories (remove the comment below to include it)
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# vendor/
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bin/
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6
Makefile
6
Makefile
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@ -2,12 +2,14 @@ LINT_ARGS ?= ./...
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DESTDIR ?= "/usr/local"
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bin:
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GOOS=linux go build -o bin/templater-linux cmd/templater.go
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GOOS=linux CGO_ENABLED=0 go build -o bin/templater-linux cmd/templater/main.go
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GOOS=linux CGO_ENABLED=0 go build -o bin/bootstraper-linux cmd/bootstraper/main.go
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upx bin/templater-linux
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upx bin/templaster-server
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upx bin/bootstraper-linux
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install:
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cp bin/templater-linux $(DESTDIR)/bin/templater
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cp bin/bootstraper-linux $(DESTDIR)/bin/bootstraper
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uninstall:
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rm $(DESTDIR)/bin/templater
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10
api/main.go
10
api/main.go
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@ -1,9 +1,6 @@
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package api
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import (
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"net/http"
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"forge.cadoles.com/pcaseiro/templatefile/pkg/templater"
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"github.com/gin-gonic/gin"
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)
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@ -13,6 +10,12 @@ type Template struct {
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Config string
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}
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func Generate(c *gin.Context) {
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return
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}
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/*
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func Generate(c *gin.Context) {
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var template Template
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@ -42,3 +45,4 @@ func Generate(c *gin.Context) {
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}
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}
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*/
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@ -0,0 +1,27 @@
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package main
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import (
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"forge.cadoles.com/pcaseiro/templatefile/pkg/templater"
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"github.com/alexflint/go-arg"
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)
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func main() {
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var args struct {
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Config string `arg:"-c,--config,env:CONFIG" help:"Configuration values file or directory path" default:"./data/config"`
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TemplateDirectory string `arg:"-t,--template-dir,env:TEMPLATE_DIR" help:"Template directory path" default:"./data/templates"`
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RootDirectory string `arg:"-r,--root-dir,env:ROOT_DIR" help:"Generate files with this root instead of /" default:"/"`
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}
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arg.MustParse(&args)
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var hostConfig templater.TemplaterConfig
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err := hostConfig.New(args.Config, args.TemplateDirectory)
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if err != nil {
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panic(err)
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}
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if err = hostConfig.ManageServices(args.RootDirectory); err != nil {
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panic(err)
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}
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}
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@ -55,13 +55,13 @@ func main() {
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config = []byte(args.Config)
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}
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result := ""
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if templateType == "go" {
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result = templater.ProcessGoTemplate(templateFile, config)
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} else if templateType == "hcl" {
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result = templater.ProcessHCLTemplate(templateFile, config)
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} else {
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panic(fmt.Errorf("Unsupported template type"))
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var file templater.ConfigFile
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file.Source = templateFile
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file.TemplateType = templateType
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result, err := file.ProcessTemplate(templateFile, config)
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if err != nil {
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panic(err)
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}
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if output == "stdout" {
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fmt.Printf("%s", result)
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@ -0,0 +1,127 @@
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{
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"Name": "LokiStack",
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"Global": {
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"Vars": {},
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"ConfigFiles": [
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{
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"destination": "/etc/hosts",
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"source": "hosts.pktpl.hcl",
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"mode": "600",
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"owner": "root",
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"group": "root"
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}
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]
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},
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"Services": {
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"Loki": {
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"ConfigFiles": [
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{
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"destination": "/etc/loki/loki-local-config.yaml",
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"source": "loki-local-config.pktpl.hcl",
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"mode": "600",
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"owner": "loki",
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"service": "loki",
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"group": "grafana"
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}
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],
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"Repositories": {
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"Grafana": {
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"type": "helm",
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"name": "grafana",
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"url": "https://grafana.github.io/helm-charts",
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"enabled":true
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},
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"AlpineTesting": {
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"type": "apk",
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"name": "testing",
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"url": "http://mirrors.bfsu.edu.cn/alpine/edge/testing",
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"enabled": true
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}
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},
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"Packages": {
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"loki": {
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"name": "loki",
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"action": "install"
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},
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"promtail": {
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"name": "loki-promtail",
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"action": "install"
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},
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"loki-helm": {
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"type": "helm",
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"name": "loki",
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"repo": "grafana/loki-simple-scalable"
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}
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},
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"Vars": {
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"AuthEnabled": false,
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"User": "loki",
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"Group": "grafana",
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"HTTPPort": "3100",
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"GRPCPort": "9096",
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"AlertManagerURL": "http://localhost:9093",
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"StorageRoot": "/var/loki",
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"SharedStore": "filesystem",
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"ObjectStore": "filesystem",
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"LogLevel": "error",
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"S3": {
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"URL": "",
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"BucketName": "",
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"APIKey": "",
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"APISecretKey": ""
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}
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},
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"Daemons": {
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"Loki": {
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"name": "loki",
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"enabled": true
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}
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},
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"Users": {
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"loki": {
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"username": "loki",
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"group": "grafana",
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"home" : "/srv/loki",
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"shell": "/bin/nologin"
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}
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}
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},
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"Grafana": {
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"ConfigFiles": [
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{
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"destination": "/etc/grafana.ini",
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"source": "grafana.ini.pktpl.hcl",
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"mode": "700",
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"owner": "grafana",
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"group": "grafana"
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}
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],
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"Packages": {
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"grafana": {
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"name": "grafana",
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"action": "install"
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}
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},
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"Vars": {
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"AuthEnabled": false,
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"User": "toto",
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"Group": "grafana"
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},
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"Users": {
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"grafana": {
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"username": "grafana",
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"group": "grafana",
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"home": "/srv/grafana",
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"shell": "/bin/nologin"
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}
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},
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"Daemons": {
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"grafana": {
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"name": "grafana",
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"type": "auto",
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"enabled": true
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}
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}
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}
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}
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}
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{
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"Name": "OpenNebula",
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"Services": {
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"Global": {
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"Vars": {
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"EnableOpenNebula": true
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},
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"ConfigFiles": [
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{
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"destination": "/etc/hosts",
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"source": "hosts.pktpl.hcl",
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"mode": "600",
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"owner": "root",
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"group": "root"
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}
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]
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},
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"OpenNebula": {
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"EnabledBy": { "var": "EnableOpenNebula", "value": true },
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"ConfigFiles": [
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{
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"destination": "/etc/one/oned.conf",
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"source": "loki-local-config.pktpl.hcl",
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"mode": "600",
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"owner": "loki",
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"group": "grafana"
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}
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],
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"Vars": {
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"AuthEnabled": false,
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"User": "loki",
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"Group": "grafana",
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"HTTPPort": "3100",
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"GRPCPort": "9096",
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"AlertManagerURL": "http://localhost:9093",
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"StorageRoot": "/var/loki",
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"SharedStore": "filesystem",
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"ObjectStore": "filesystem",
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"LogLevel": "error",
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"S3": {
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"URL": "",
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"BucketName": "",
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"APIKey": "",
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"APISecretKey": ""
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}
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},
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"Daemon": {
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"name": "oned",
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"enabled": true
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},
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"Users": {
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"loki": {
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"username": "oneadmin",
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"group": "oneadmin",
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"home" : "/var/lib/one",
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"shell": "/bin/sh"
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}
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}
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}
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}
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}
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@ -1,26 +0,0 @@
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{
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"Name": "loki",
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"ConfigFiles": [
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{
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"destination": "/etc/loki/loki-local-config.yaml",
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"source": "loki-local-config.pktpl.hcl",
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"mod": "600"
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}
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],
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"AuthEnabled": false,
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"User": "loki",
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"Group": "grafana",
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"HTTPPort": "3100",
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"GRPCPort": "9096",
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"AlertManagerURL": "http://localhost:9093",
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"StorageRoot": "/var/loki",
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"SharedStore": "filesystem",
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"ObjectStore": "filesystem",
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"LogLevel": "error",
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"S3": {
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"URL": "",
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"BucketName": "",
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"APIKey": "",
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"APISecretKey": ""
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}
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}
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@ -0,0 +1,5 @@
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%{ if AuthEnabled ~}
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auth_enabled: true
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%{ else }
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auth_enabled: false
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%{ endif }
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@ -0,0 +1,38 @@
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module forge.cadoles.com/pcaseiro/templatefile
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go 1.18
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require (
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github.com/alexflint/go-arg v1.4.3
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github.com/gin-gonic/gin v1.8.1
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github.com/hashicorp/hcl/v2 v2.11.1
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github.com/imdario/mergo v0.3.13
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github.com/zclconf/go-cty v1.10.0
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gopkg.in/ini.v1 v1.66.6
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)
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require (
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github.com/agext/levenshtein v1.2.1 // indirect
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github.com/alexflint/go-scalar v1.1.0 // indirect
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github.com/apparentlymart/go-textseg/v13 v13.0.0 // indirect
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github.com/gin-contrib/sse v0.1.0 // indirect
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github.com/go-playground/locales v0.14.0 // indirect
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github.com/go-playground/universal-translator v0.18.0 // indirect
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github.com/go-playground/validator/v10 v10.10.0 // indirect
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github.com/goccy/go-json v0.9.7 // indirect
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github.com/google/go-cmp v0.5.8 // indirect
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github.com/json-iterator/go v1.1.12 // indirect
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github.com/leodido/go-urn v1.2.1 // indirect
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github.com/mattn/go-isatty v0.0.14 // indirect
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github.com/mitchellh/go-wordwrap v0.0.0-20150314170334-ad45545899c7 // indirect
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github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421 // indirect
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github.com/modern-go/reflect2 v1.0.2 // indirect
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github.com/pelletier/go-toml/v2 v2.0.1 // indirect
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github.com/ugorji/go/codec v1.2.7 // indirect
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golang.org/x/crypto v0.0.0-20210711020723-a769d52b0f97 // indirect
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golang.org/x/net v0.0.0-20210226172049-e18ecbb05110 // indirect
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golang.org/x/sys v0.0.0-20211019181941-9d821ace8654 // indirect
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golang.org/x/text v0.3.6 // indirect
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google.golang.org/protobuf v1.28.0 // indirect
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gopkg.in/yaml.v2 v2.4.0 // indirect
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)
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@ -0,0 +1,153 @@
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package templater
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import (
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"log"
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"path/filepath"
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"strconv"
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"bytes"
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encjson "encoding/json"
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"fmt"
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"os"
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"text/template"
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"github.com/hashicorp/hcl/v2"
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"github.com/hashicorp/hcl/v2/hclsyntax"
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"github.com/zclconf/go-cty/cty"
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ctyjson "github.com/zclconf/go-cty/cty/json"
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"forge.cadoles.com/pcaseiro/templatefile/pkg/utils"
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)
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type ConfigFile struct {
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Destination string `form:"destination" json:"destination"` // Where do we write the configuration file
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Source string `form:"source" json:"source"` // The template file short name
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TemplateType string `json:"type"` // The template file type (hcl or gotemplate)
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Mode string `form:"mod" json:"mode"` // The configuration file final permissions (mode)
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Owner string `json:"owner"` // The configuration file owner
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Service string `json:"service"` // Service to restart after configuration generation
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Group string `json:"group"` // The configuration file group owner
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}
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// Generate the configuration file from the template (hcl or json)
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func (cf *ConfigFile) Generate(root string, templateDir string, values []byte) error {
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var template string
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dest := filepath.Join(root, cf.Destination)
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source := filepath.Join(templateDir, cf.Source)
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intMod, err := strconv.ParseInt(cf.Mode, 8, 64)
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if err != nil {
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return (err)
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}
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template, err = cf.ProcessTemplate(source, values)
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if err != nil {
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return fmt.Errorf("Process templates failed with error: %v", err)
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}
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dirname := filepath.Dir(dest)
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err = os.MkdirAll(dirname, os.FileMode(int(0700)))
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if err != nil {
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return fmt.Errorf("Process templates failed with error: %v", err)
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}
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err = os.WriteFile(dest, []byte(template), os.FileMode(intMod))
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if err != nil {
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return fmt.Errorf("Process templates failed with error: %v", err)
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}
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log.Printf("\tFile %s generated\n", dest)
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return nil
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}
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// Process the template with the provided values
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func (cf *ConfigFile) ProcessTemplate(source string, values []byte) (string, error) {
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var result string
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var err error
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|
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if cf.TemplateType == "hcl" {
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// The template is an hcl template so we call processHCLTemplate
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result, err = cf.processHCLTemplate(source, values)
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if err != nil {
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return "", fmt.Errorf("Process HCL template failed with error: %v", err)
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}
|
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} else if cf.TemplateType == "go" {
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// The template is a go template so we call processGoTemplate
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result, err = cf.processGoTemplate(source, values)
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if err != nil {
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return "", fmt.Errorf("Process GO template failed with error: %v", err)
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}
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}
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return result, nil
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}
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|
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// The actual template processing for Go templates
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func (cf *ConfigFile) processGoTemplate(file string, configValues []byte) (string, error) {
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|
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// The JSON configuration
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var confData map[string]interface{}
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var res bytes.Buffer
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|
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err := encjson.Unmarshal(configValues, &confData)
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utils.CheckErr(err)
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// Read the template
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data, err := os.ReadFile(file)
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utils.CheckErr(err)
|
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|
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tpl, err := template.New("conf").Parse(string(data))
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utils.CheckErr(err)
|
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|
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utils.CheckErr(tpl.Execute(&res, confData["Config"]))
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|
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return res.String(), nil
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}
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|
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// The actual template processing for HCL templates
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func (cf *ConfigFile) processHCLTemplate(file string, config []byte) (string, error) {
|
||||
|
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fct, err := os.ReadFile(file)
|
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utils.CheckErr(err)
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||||
|
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expr, diags := hclsyntax.ParseTemplate(fct, file, hcl.Pos{Line: 0, Column: 1})
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utils.CheckDiags(diags)
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||||
|
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// Retrieve values from JSON
|
||||
var varsVal cty.Value
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||||
ctyType, err := ctyjson.ImpliedType(config)
|
||||
if err != nil {
|
||||
return "", err
|
||||
/* Maybe one day
|
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cexpr, diags := hclsyntax.ParseExpression(config, "", hcl.Pos{Line: 0, Column: 1})
|
||||
if diags.HasErrors() {
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||||
panic(diags.Error())
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||||
}
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varsVal, diags = cexpr.Value(&hcl.EvalContext{})
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||||
fmt.Println(cexpr.Variables())
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||||
checkDiags(diags)
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||||
*/
|
||||
} else {
|
||||
varsVal, err = ctyjson.Unmarshal(config, ctyType)
|
||||
utils.CheckErr(err)
|
||||
}
|
||||
|
||||
ctx := &hcl.EvalContext{
|
||||
Variables: varsVal.AsValueMap(),
|
||||
}
|
||||
|
||||
for n := range ctx.Variables {
|
||||
if !hclsyntax.ValidIdentifier(n) {
|
||||
return "", fmt.Errorf("invalid template variable name %q: must start with a letter, followed by zero or more letters, digits, and underscores", n)
|
||||
}
|
||||
}
|
||||
|
||||
for _, traversal := range expr.Variables() {
|
||||
root := traversal.RootName()
|
||||
if _, ok := ctx.Variables[root]; !ok {
|
||||
return "", fmt.Errorf("vars map does not contain key %q, referenced at %s", root, traversal[0].SourceRange())
|
||||
}
|
||||
}
|
||||
|
||||
val, diags := expr.Value(ctx)
|
||||
if diags.HasErrors() {
|
||||
return "", diags
|
||||
}
|
||||
|
||||
return val.AsString(), nil
|
||||
}
|
||||
|
|
@ -1,89 +1,88 @@
|
|||
package templater
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
encjson "encoding/json"
|
||||
"fmt"
|
||||
"io/ioutil"
|
||||
"log"
|
||||
"os"
|
||||
"text/template"
|
||||
|
||||
"github.com/hashicorp/hcl/v2"
|
||||
"github.com/hashicorp/hcl/v2/hclsyntax"
|
||||
"github.com/zclconf/go-cty/cty"
|
||||
ctyjson "github.com/zclconf/go-cty/cty/json"
|
||||
|
||||
"forge.cadoles.com/pcaseiro/templatefile/pkg/utils"
|
||||
"github.com/imdario/mergo"
|
||||
)
|
||||
|
||||
func ProcessGoTemplate(file string, config []byte) string {
|
||||
var CacheFilePath = "/var/cache/templater.db"
|
||||
|
||||
// The JSON configuration
|
||||
var confData map[string]interface{}
|
||||
var res bytes.Buffer
|
||||
|
||||
err := encjson.Unmarshal(config, &confData)
|
||||
utils.CheckErr(err)
|
||||
|
||||
// Read the template
|
||||
data, err := os.ReadFile(file)
|
||||
utils.CheckErr(err)
|
||||
|
||||
tpl, err := template.New("conf").Parse(string(data))
|
||||
utils.CheckErr(err)
|
||||
|
||||
utils.CheckErr(tpl.Execute(&res, confData))
|
||||
|
||||
return res.String()
|
||||
type TemplaterConfig struct {
|
||||
Name string `json:"Name"`
|
||||
TemplateDirectory string `json:"TemplateDirectory"`
|
||||
Services map[string]Service `json:"Services"`
|
||||
GlobalService Service `json:"Global"`
|
||||
}
|
||||
|
||||
func ProcessHCLTemplate(file string, config []byte) string {
|
||||
|
||||
fct, err := os.ReadFile(file)
|
||||
utils.CheckErr(err)
|
||||
|
||||
expr, diags := hclsyntax.ParseTemplate(fct, file, hcl.Pos{Line: 0, Column: 1})
|
||||
utils.CheckDiags(diags)
|
||||
|
||||
// Retrieve values from JSON
|
||||
var varsVal cty.Value
|
||||
ctyType, err := ctyjson.ImpliedType(config)
|
||||
func (tc *TemplaterConfig) loadCache() error {
|
||||
// Load globals from cache
|
||||
var cache Service
|
||||
err := Load(CacheFilePath, &cache)
|
||||
if err != nil {
|
||||
panic(err)
|
||||
/* Maybe one day
|
||||
cexpr, diags := hclsyntax.ParseExpression(config, "", hcl.Pos{Line: 0, Column: 1})
|
||||
if diags.HasErrors() {
|
||||
panic(diags.Error())
|
||||
fmt.Printf("Warning: No globals to load\n")
|
||||
}
|
||||
|
||||
err = mergo.Merge(&tc.GlobalService, cache)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (tc *TemplaterConfig) New(confpath string, templateDir string) error {
|
||||
// Load stored globals if needed
|
||||
lerr := tc.loadCache()
|
||||
if lerr != nil {
|
||||
return lerr
|
||||
}
|
||||
// Check if the configuration path is a Directory or a file
|
||||
fileInfo, err := os.Stat(confpath)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if fileInfo.IsDir() {
|
||||
// The conf path is a directory we load all the files and merge data
|
||||
files, err := ioutil.ReadDir(confpath)
|
||||
if err != nil {
|
||||
return fmt.Errorf("Templater configuration load failed with error: %v", err)
|
||||
}
|
||||
for _, file := range files {
|
||||
fname := fmt.Sprintf("%s/%s", confpath, file.Name())
|
||||
var ntc TemplaterConfig
|
||||
err := Load(fname, &ntc)
|
||||
if err != nil {
|
||||
return fmt.Errorf("Templater configuration load failed with error: %v", err)
|
||||
}
|
||||
err = mergo.Merge(tc, ntc)
|
||||
if err != nil {
|
||||
return fmt.Errorf("Templater configuration load failed with error: %v", err)
|
||||
}
|
||||
}
|
||||
varsVal, diags = cexpr.Value(&hcl.EvalContext{})
|
||||
fmt.Println(cexpr.Variables())
|
||||
checkDiags(diags)
|
||||
*/
|
||||
} else {
|
||||
varsVal, err = ctyjson.Unmarshal(config, ctyType)
|
||||
utils.CheckErr(err)
|
||||
}
|
||||
|
||||
ctx := &hcl.EvalContext{
|
||||
Variables: varsVal.AsValueMap(),
|
||||
}
|
||||
|
||||
for n := range ctx.Variables {
|
||||
if !hclsyntax.ValidIdentifier(n) {
|
||||
panic(fmt.Errorf("invalid template variable name %q: must start with a letter, followed by zero or more letters, digits, and underscores", n))
|
||||
// The conf path is a file we only load this file (of course)
|
||||
err = Load(confpath, tc)
|
||||
if err != nil {
|
||||
return fmt.Errorf("Confiuration read failed with error: %v", err)
|
||||
}
|
||||
}
|
||||
|
||||
for _, traversal := range expr.Variables() {
|
||||
root := traversal.RootName()
|
||||
if _, ok := ctx.Variables[root]; !ok {
|
||||
panic(fmt.Errorf("vars map does not contain key %q, referenced at %s", root, traversal[0].SourceRange()))
|
||||
}
|
||||
tc.TemplateDirectory = templateDir
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
val, diags := expr.Value(ctx)
|
||||
if diags.HasErrors() {
|
||||
panic(diags.Error())
|
||||
func (tc *TemplaterConfig) ManageServices(rootDir string) error {
|
||||
for name, svr := range tc.Services {
|
||||
log.Printf("*** Working on service %s", name)
|
||||
if err := svr.Manage(tc.TemplateDirectory, rootDir); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
return val.AsString()
|
||||
log.Printf("*** Service %s processed", name)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
|
|
|||
|
|
@ -0,0 +1,74 @@
|
|||
package templater
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"log"
|
||||
"runtime"
|
||||
|
||||
"forge.cadoles.com/pcaseiro/templatefile/pkg/utils"
|
||||
)
|
||||
|
||||
type SystemPackage struct {
|
||||
Name string `json:"name"`
|
||||
Type string `json:"type"`
|
||||
Action string `json:"action"`
|
||||
OS string `json:"os"`
|
||||
Distribution string `json:"distribution"`
|
||||
}
|
||||
|
||||
func (p *SystemPackage) SetDistribution() error {
|
||||
OSConfig, err := utils.ReadOSRelease()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
p.Distribution = OSConfig["ID_LIKE"]
|
||||
return nil
|
||||
}
|
||||
func (p *SystemPackage) SetOS() error {
|
||||
p.OS = runtime.GOOS
|
||||
return nil
|
||||
}
|
||||
|
||||
func (p *SystemPackage) Manage() error {
|
||||
var pkErr error
|
||||
var stdErr []byte
|
||||
|
||||
if p.OS == "" {
|
||||
if err := p.SetOS(); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
if p.Distribution == "" {
|
||||
if err := p.SetDistribution(); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
log.Printf("\tInstalling %s package\n", p.Name)
|
||||
switch os := p.Distribution; os {
|
||||
case "debian", "ubuntu":
|
||||
_, stdErr, pkErr = utils.RunSystemCommand("apt", "install", "-y", p.Name)
|
||||
case "alpine":
|
||||
_, stdErr, pkErr = utils.RunSystemCommand("apk", "add", p.Name)
|
||||
case "redhat":
|
||||
_, stdErr, pkErr = utils.RunSystemCommand("yum", "install", "-y", p.Name)
|
||||
case "arch":
|
||||
_, stdErr, pkErr = utils.RunSystemCommand("pacman", "-Suy", p.Name)
|
||||
default:
|
||||
pkErr = fmt.Errorf("Unsupported OS %s [%s]", p.OS, stdErr)
|
||||
}
|
||||
|
||||
if pkErr != nil {
|
||||
var msg string
|
||||
if len(stdErr) != 0 {
|
||||
msg = string(stdErr)
|
||||
} else {
|
||||
msg = pkErr.Error()
|
||||
}
|
||||
return fmt.Errorf("Package %s, os %s, failed with error: %v", p.Name, p.OS, msg)
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
|
@ -0,0 +1,51 @@
|
|||
package templater
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"encoding/json"
|
||||
"fmt"
|
||||
"io"
|
||||
"os"
|
||||
"sync"
|
||||
)
|
||||
|
||||
var lock sync.Mutex
|
||||
|
||||
func marshal(v interface{}) (io.Reader, error) {
|
||||
b, err := json.MarshalIndent(v, "", "\t")
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return bytes.NewReader(b), nil
|
||||
}
|
||||
|
||||
func unmarshal(r io.Reader, v interface{}) error {
|
||||
return json.NewDecoder(r).Decode(v)
|
||||
}
|
||||
|
||||
func Save(path string, v interface{}) error {
|
||||
lock.Lock()
|
||||
defer lock.Unlock()
|
||||
f, err := os.Create(path)
|
||||
if err != nil {
|
||||
return fmt.Errorf("Saving Templater configuration failed with error : %v", err)
|
||||
}
|
||||
defer f.Close()
|
||||
r, err := marshal(v)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
_, err = io.Copy(f, r)
|
||||
return err
|
||||
}
|
||||
|
||||
func Load(path string, v interface{}) error {
|
||||
lock.Lock()
|
||||
defer lock.Unlock()
|
||||
f, err := os.Open(path)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
defer f.Close()
|
||||
return unmarshal(f, v)
|
||||
}
|
||||
|
|
@ -0,0 +1,102 @@
|
|||
package templater
|
||||
|
||||
import (
|
||||
"bufio"
|
||||
"fmt"
|
||||
"io/ioutil"
|
||||
"log"
|
||||
"os"
|
||||
"strings"
|
||||
|
||||
"forge.cadoles.com/pcaseiro/templatefile/pkg/utils"
|
||||
)
|
||||
|
||||
var APKConfigFile = "/etc/apk/repositories"
|
||||
|
||||
type APKRepository struct {
|
||||
Repository
|
||||
}
|
||||
|
||||
func (hr *APKRepository) urlIsPresent() (bool, error) {
|
||||
f, err := os.Open(APKConfigFile)
|
||||
if err != nil {
|
||||
return false, err
|
||||
}
|
||||
defer f.Close()
|
||||
|
||||
// Splits on newlines by default.
|
||||
scanner := bufio.NewScanner(f)
|
||||
|
||||
line := 1
|
||||
for scanner.Scan() {
|
||||
if strings.Contains(scanner.Text(), hr.URL) {
|
||||
log.Printf("\tRepository %s already present\n", hr.Name)
|
||||
return true, nil
|
||||
}
|
||||
line++
|
||||
}
|
||||
|
||||
if err := scanner.Err(); err != nil {
|
||||
return false, err
|
||||
}
|
||||
return false, nil
|
||||
|
||||
}
|
||||
|
||||
func (hr *APKRepository) Add() error {
|
||||
|
||||
URLIsPresent, err := hr.urlIsPresent()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if URLIsPresent {
|
||||
return nil
|
||||
} else {
|
||||
data := fmt.Sprintf("%s\n", hr.URL)
|
||||
file, err := os.OpenFile(APKConfigFile, os.O_APPEND|os.O_WRONLY, 0644)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
defer file.Close()
|
||||
if _, err := file.WriteString(data); err != nil {
|
||||
return err
|
||||
} else {
|
||||
log.Printf("Repository %s added\n", hr.Name)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
func (hr *APKRepository) Update() error {
|
||||
if _, stdErr, err := utils.RunSystemCommand("apk", "update"); err != nil {
|
||||
return fmt.Errorf("%s [%s]", stdErr, err)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// FIXME
|
||||
func (hr *APKRepository) Delete() error {
|
||||
fileBytes, err := ioutil.ReadFile("/etc/apk/repositories")
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
lines := strings.Split(string(fileBytes), "\n")
|
||||
for _, line := range lines {
|
||||
fmt.Printf("DEBUG TODO %s", line)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (hr *APKRepository) Manage() error {
|
||||
if hr.Enabled {
|
||||
if err := hr.Add(); err != nil {
|
||||
return err
|
||||
}
|
||||
log.Println("\tUpdating apk repositories")
|
||||
return hr.Update()
|
||||
} else {
|
||||
return hr.Delete()
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,43 @@
|
|||
package templater
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"os"
|
||||
|
||||
"forge.cadoles.com/pcaseiro/templatefile/pkg/utils"
|
||||
)
|
||||
|
||||
type DebRepository struct {
|
||||
Repository
|
||||
}
|
||||
|
||||
func (hr *DebRepository) Add() error {
|
||||
//deb http://fr.archive.ubuntu.com/ubuntu/ focal main restricted
|
||||
|
||||
data := fmt.Sprintf("deb %s", hr.URL)
|
||||
if err := os.WriteFile("/etc/apt/source.list.d", []byte(data), 0600); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (hr *DebRepository) Update() error {
|
||||
if _, stdErr, err := utils.RunSystemCommand("apt", "update", "-y"); err != nil {
|
||||
return fmt.Errorf("%s [%s]", stdErr, err)
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (hr *DebRepository) Delete() error {
|
||||
//TODO
|
||||
return nil
|
||||
}
|
||||
func (hr *DebRepository) Manage() error {
|
||||
if hr.Enabled {
|
||||
return hr.Add()
|
||||
} else {
|
||||
return hr.Delete()
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,25 @@
|
|||
package templater
|
||||
|
||||
type HelmRepository struct {
|
||||
Repository
|
||||
}
|
||||
|
||||
func (hr *HelmRepository) Add() error {
|
||||
return nil
|
||||
}
|
||||
|
||||
func (hr *HelmRepository) Update() error {
|
||||
return nil
|
||||
}
|
||||
|
||||
func (hr *HelmRepository) Delete() error {
|
||||
return nil
|
||||
}
|
||||
|
||||
func (hr *HelmRepository) Manage() error {
|
||||
if hr.Enabled {
|
||||
return hr.Add()
|
||||
} else {
|
||||
return hr.Delete()
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,17 @@
|
|||
package templater
|
||||
|
||||
type PackageRepository interface {
|
||||
Manage() error
|
||||
Update() error
|
||||
Add() error
|
||||
Delete() error
|
||||
}
|
||||
|
||||
type Repository struct {
|
||||
Actions PackageRepository
|
||||
|
||||
Name string `json:"name"`
|
||||
Type string `json:"type"`
|
||||
URL string `json:"url"`
|
||||
Enabled bool `json:"enabled"`
|
||||
}
|
||||
|
|
@ -0,0 +1,122 @@
|
|||
package templater
|
||||
|
||||
import (
|
||||
"encoding/json"
|
||||
"fmt"
|
||||
"log"
|
||||
"path/filepath"
|
||||
)
|
||||
|
||||
type Service struct {
|
||||
ConfigFiles []ConfigFile `json:"ConfigFiles"`
|
||||
Vars map[string]interface{} `json:"Vars"`
|
||||
Daemons map[string]SystemService `json:"Daemons"`
|
||||
Users map[string]SystemUser `json:"Users"`
|
||||
Repos map[string]Repository `json:"Repositories"`
|
||||
Packages map[string]SystemPackage `json:"Packages"`
|
||||
}
|
||||
|
||||
func (s *Service) manageRepos(repos map[string]Repository) error {
|
||||
for _, repo := range s.Repos {
|
||||
if repo.Type == "helm" {
|
||||
rp := HelmRepository{repo}
|
||||
if err := rp.Manage(); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
if repo.Type == "apk" {
|
||||
rp := APKRepository{repo}
|
||||
if err := rp.Manage(); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
if repo.Type == "deb" {
|
||||
rp := DebRepository{}
|
||||
if err := rp.Manage(); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (s *Service) Manage(templateDir string, rootDir string) error {
|
||||
// Manage packages repositories
|
||||
log.Print(" Managing package repositories")
|
||||
err := s.manageRepos(s.Repos)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// Create system users
|
||||
log.Print(" Managing system users")
|
||||
for _, user := range s.Users {
|
||||
err := user.Manage()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
// Manage system packages
|
||||
log.Print(" Installing packages")
|
||||
for _, pack := range s.Packages {
|
||||
err := pack.Manage()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
log.Printf("\tPackage %s installed\n", pack.Name)
|
||||
}
|
||||
|
||||
log.Print(" Generating configuration files\n")
|
||||
err = processConfigFiles(s.ConfigFiles, s.Vars, templateDir, rootDir)
|
||||
if err != nil {
|
||||
return fmt.Errorf("ProcessingTemplatesFailed with error: %v", err)
|
||||
}
|
||||
|
||||
log.Print(" Managing services:\n")
|
||||
for _, daemon := range s.Daemons {
|
||||
err = daemon.Manage()
|
||||
if err != nil {
|
||||
return fmt.Errorf("Error managing service daemons: %v", err)
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func processConfigFiles(tpls []ConfigFile, variables map[string]interface{}, templateDir string, rootDir string) error {
|
||||
values, err := json.Marshal(variables)
|
||||
if err != nil {
|
||||
return fmt.Errorf("Error unmarshaling values on template process; %v", err)
|
||||
}
|
||||
|
||||
var servicesToRestart []string
|
||||
for _, tpl := range tpls {
|
||||
fileExt := filepath.Ext(tpl.Source)
|
||||
if fileExt == ".hcl" {
|
||||
tpl.TemplateType = "hcl"
|
||||
} else if fileExt == ".tpl" {
|
||||
tpl.TemplateType = "go"
|
||||
} else {
|
||||
return fmt.Errorf("Unsupported file type %s, templates extensions have to be '.hcl' or '.tpl'", fileExt)
|
||||
}
|
||||
if err := tpl.Generate("/tmp/test", templateDir, values); err != nil {
|
||||
return fmt.Errorf("Template %s generation failed with error %v", tpl.Source, err)
|
||||
}
|
||||
|
||||
if len(tpl.Service) != 0 {
|
||||
servicesToRestart = append(servicesToRestart, tpl.Service)
|
||||
}
|
||||
}
|
||||
|
||||
for _, srv := range servicesToRestart {
|
||||
sv := SystemService{
|
||||
Name: srv,
|
||||
Enabled: true,
|
||||
Type: "",
|
||||
ToStart: true,
|
||||
}
|
||||
return sv.Restart()
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
|
@ -0,0 +1,132 @@
|
|||
package templater
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"log"
|
||||
"os"
|
||||
|
||||
"forge.cadoles.com/pcaseiro/templatefile/pkg/utils"
|
||||
)
|
||||
|
||||
type SystemService struct {
|
||||
Name string `json:"name"`
|
||||
Enabled bool `json:"enabled"`
|
||||
Type string `json:"type"`
|
||||
ToStart bool `json:"start"`
|
||||
}
|
||||
|
||||
func (sys *SystemService) SetType() {
|
||||
systemdRunDirectory := "/run/systemd/system"
|
||||
openRcBinaryFile := "/sbin/openrc"
|
||||
|
||||
// Check if the configuration path is a Directory or a file
|
||||
fileInfo, err := os.Stat(systemdRunDirectory)
|
||||
if err == nil {
|
||||
if fileInfo.IsDir() {
|
||||
sys.Type = "systemd"
|
||||
}
|
||||
}
|
||||
|
||||
fileInfo, err = os.Stat(openRcBinaryFile)
|
||||
if err == nil {
|
||||
if fileInfo.IsDir() {
|
||||
return
|
||||
}
|
||||
sys.Type = "openrc"
|
||||
}
|
||||
}
|
||||
|
||||
func (sys *SystemService) Action() error {
|
||||
if sys.ToStart {
|
||||
return sys.Start()
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (sys *SystemService) Manage() error {
|
||||
// By default if the property sys.ToStart is empty
|
||||
if sys.Type == "" || sys.Type == "auto" {
|
||||
sys.SetType()
|
||||
}
|
||||
if sys.Enabled {
|
||||
err := sys.Enable()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if err = sys.Action(); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
} else {
|
||||
log.Printf("\nNothing to do for daemon %s\n", sys.Name)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (sys *SystemService) Start() error {
|
||||
log.Printf("\tStarting system service : %s\n", sys.Name)
|
||||
if sys.Type == "systemd" {
|
||||
_, stdErr, err := utils.RunSystemCommand("systemctl", "start", sys.Name)
|
||||
if err != nil {
|
||||
return fmt.Errorf("System service %s \n * Start error:\n - %s", sys.Name, stdErr)
|
||||
}
|
||||
} else if sys.Type == "openrc" {
|
||||
_, stdErr, err := utils.RunSystemCommand("service", sys.Name, "start")
|
||||
if err != nil {
|
||||
return fmt.Errorf("System service %s \n * Enable error:\n - %s", sys.Name, stdErr)
|
||||
}
|
||||
} else {
|
||||
return fmt.Errorf("Unsupported service type %s for service %s", sys.Type, sys.Name)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (sys *SystemService) Stop() error {
|
||||
log.Printf("\tStopping system service : %s\n", sys.Name)
|
||||
if sys.Type == "systemd" {
|
||||
_, stdErr, err := utils.RunSystemCommand("systemctl", "stop", sys.Name)
|
||||
if err != nil {
|
||||
return fmt.Errorf("System service %s \n * Stop error:\n - %s", sys.Name, stdErr)
|
||||
}
|
||||
} else if sys.Type == "openrc" {
|
||||
_, stdErr, err := utils.RunSystemCommand("service", sys.Name, "stop")
|
||||
if err != nil {
|
||||
return fmt.Errorf("System service %s \n * Enable error:\n - %s", sys.Name, stdErr)
|
||||
}
|
||||
} else {
|
||||
return fmt.Errorf("Unsupported service type %s for service %s", sys.Type, sys.Name)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (sys *SystemService) Restart() error {
|
||||
if sys.Type == "" || sys.Type == "auto" {
|
||||
sys.SetType()
|
||||
}
|
||||
if err := sys.Stop(); err != nil {
|
||||
return err
|
||||
}
|
||||
if err := sys.Start(); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (sys *SystemService) Enable() error {
|
||||
if sys.Type == "systemd" {
|
||||
_, stdErr, err := utils.RunSystemCommand("systemctl", "enable", sys.Name)
|
||||
if err != nil {
|
||||
return fmt.Errorf("System service %s \n * Enable error:\n - %s", sys.Name, stdErr)
|
||||
}
|
||||
log.Printf("\tSystemd service %s enabled", sys.Name)
|
||||
} else if sys.Type == "openrc" {
|
||||
_, stdErr, err := utils.RunSystemCommand("rc-update", "add", sys.Name, "default")
|
||||
if err != nil {
|
||||
return fmt.Errorf("System service %s \n * Enable error:\n - %s", sys.Name, stdErr)
|
||||
}
|
||||
log.Printf("\tOpenRC service %s enabled", sys.Name)
|
||||
} else {
|
||||
return fmt.Errorf("Unsupported service type %s for service %s", sys.Type, sys.Name)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
|
@ -0,0 +1,51 @@
|
|||
package templater
|
||||
|
||||
import (
|
||||
"log"
|
||||
|
||||
"forge.cadoles.com/pcaseiro/templatefile/pkg/utils"
|
||||
)
|
||||
|
||||
type SystemUser struct {
|
||||
UserName string `json:"username"`
|
||||
Group string `json:"group"`
|
||||
Home string `json:"home"`
|
||||
Shell string `json:"shell"`
|
||||
}
|
||||
|
||||
func (su *SystemUser) exists() (bool, error) {
|
||||
_, _, err := utils.RunSystemCommand("getent", "passwd", su.UserName)
|
||||
if err != nil {
|
||||
return false, err
|
||||
}
|
||||
return true, nil
|
||||
}
|
||||
|
||||
func (su *SystemUser) Manage() error {
|
||||
exist, _ := su.exists()
|
||||
if exist {
|
||||
log.Printf("\tUser %s already exists", su.UserName)
|
||||
return nil
|
||||
}
|
||||
return su.Create()
|
||||
}
|
||||
|
||||
func (su *SystemUser) Create() error {
|
||||
_, _, err := utils.RunSystemCommand("useradd", "-b", su.Home, "-m", "-G", su.Group, su.UserName)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (su *SystemUser) Delete() error {
|
||||
_, _, err := utils.RunSystemCommand("userdel", su.UserName)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (su *SystemUser) Update() error {
|
||||
return nil
|
||||
}
|
||||
|
|
@ -1,6 +1,9 @@
|
|||
package utils
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"os/exec"
|
||||
|
||||
"github.com/hashicorp/hcl/v2"
|
||||
)
|
||||
|
||||
|
|
@ -15,3 +18,15 @@ func CheckDiags(diag hcl.Diagnostics) {
|
|||
panic(diag.Error())
|
||||
}
|
||||
}
|
||||
|
||||
// Execute a system command ...
|
||||
func RunSystemCommand(name string, arg ...string) ([]byte, []byte, error) {
|
||||
var stdOut bytes.Buffer
|
||||
var stdErr bytes.Buffer
|
||||
|
||||
cmd := exec.Command(name, arg...)
|
||||
cmd.Stderr = &stdErr
|
||||
cmd.Stdout = &stdOut
|
||||
err := cmd.Run()
|
||||
return stdOut.Bytes(), stdErr.Bytes(), err
|
||||
}
|
||||
|
|
|
|||
|
|
@ -0,0 +1,27 @@
|
|||
package utils
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
|
||||
ini "gopkg.in/ini.v1"
|
||||
)
|
||||
|
||||
var osReleaseFile = "/etc/os-release"
|
||||
|
||||
func ReadOSRelease() (map[string]string, error) {
|
||||
cfg, err := ini.Load(osReleaseFile)
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("Fail to read file: %v ", err)
|
||||
}
|
||||
|
||||
ConfigParams := make(map[string]string)
|
||||
ConfigParams["ID"] = cfg.Section("").Key("ID").String()
|
||||
idLike := cfg.Section("").Key("ID_LIKE").String()
|
||||
if idLike != "" {
|
||||
ConfigParams["ID_LIKE"] = idLike
|
||||
} else {
|
||||
ConfigParams["ID_LIKE"] = ConfigParams["ID"]
|
||||
}
|
||||
|
||||
return ConfigParams, nil
|
||||
}
|
||||
Loading…
Reference in New Issue