Try 001

Makefile

@@ -2,12 +2,14 @@ LINT_ARGS ?= ./...
 DESTDIR ?= "/usr/local"
 
 bin:
-	GOOS=linux go build -o bin/templater-linux cmd/templater.go
+	GOOS=linux go build -o bin/templater-linux cmd/templater/main.go
+	GOOS=linux go build -o bin/bootstraper-linux cmd/bootstraper/main.go
 	upx bin/templater-linux
 	upx bin/templaster-server
 
 install:
 	cp bin/templater-linux $(DESTDIR)/bin/templater
+	cp bin/bootstraper-linux $(DESTDIR)/bin/bootstraper
 
 uninstall:
 	rm $(DESTDIR)/bin/templater

cmd/bootstraper/main.go

@@ -0,0 +1,88 @@
+package main
+
+import (
+	"fmt"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"strconv"
+
+	"forge.cadoles.com/pcaseiro/templatefile/pkg/templater"
+	"forge.cadoles.com/pcaseiro/templatefile/pkg/utils"
+	"github.com/alexflint/go-arg"
+	"github.com/zclconf/go-cty/cty"
+	ctyjson "github.com/zclconf/go-cty/cty/json"
+)
+
+func main() {
+
+	var args struct {
+		ConfigDirectory   string `arg:"-c,--config-dir,env:CONFIG_DIR" help:"Configuration values directory path" default:"./data/config"`
+		TemplateDirectory string `arg:"-t,--template-dir,env:TEMPLATE_DIR" help:"Template directory path" default:"./data/templates"`
+	}
+
+	arg.MustParse(&args)
+
+	files, err := ioutil.ReadDir(args.ConfigDirectory)
+	if err != nil {
+		panic(err)
+	}
+
+	for _, file := range files {
+		var varsVal cty.Value
+
+		fname := fmt.Sprintf("%s/%s", args.ConfigDirectory, file.Name())
+		flContent, err := os.ReadFile(fname)
+		if err != nil {
+			panic(err)
+		}
+
+		ctyType, err := ctyjson.ImpliedType(flContent)
+		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())
+			}
+			varsVal, diags = cexpr.Value(&hcl.EvalContext{})
+			fmt.Println(cexpr.Variables())
+			checkDiags(diags)
+			*/
+		} else {
+			varsVal, err = ctyjson.Unmarshal(flContent, ctyType)
+			utils.CheckErr(err)
+		}
+
+		cnfVals := varsVal.AsValueMap()
+		config := cnfVals["Config"].AsValueMap()
+
+		fls := config["ConfigFiles"].AsValueSlice()
+		for _, fl := range fls {
+			data := fl.AsValueMap()
+			dest := filepath.Join("/tmp/test", data["destination"].AsString())
+			source := filepath.Join(args.TemplateDirectory, data["source"].AsString())
+			mod := data["mod"].AsString()
+			intMod, err := strconv.Atoi(mod)
+			if err != nil {
+				panic(err)
+			}
+
+			fmt.Printf("Processing %s\n", source)
+			fileExtension := filepath.Ext(source)
+			if fileExtension == ".hcl" {
+				res := templater.ProcessHCLTemplate(source, flContent)
+				dirname := filepath.Dir(dest)
+				err = os.MkdirAll(dirname, os.FileMode(int(0700)))
+				if err != nil {
+					panic(err)
+				}
+				err = os.WriteFile(dest, []byte(res), os.FileMode(intMod))
+				if err != nil {
+					panic(err)
+				}
+			}
+		}
+	}
+
+}

data/config/test.json

@@ -1,5 +1,6 @@
 {
   "Name": "loki",
+  "Config": {
     "ConfigFiles": [
       {
         "destination": "/etc/loki/loki-local-config.yaml",
@@ -24,3 +25,4 @@
         "APISecretKey": ""
     }
   }
+}

data/config/test2.json

@@ -0,0 +1,15 @@
+{
+  "Name": "toto",
+  "Config": {
+    "ConfigFiles": [
+      {
+        "destination": "/etc/hosts",
+        "source": "hosts.pktpl.hcl",
+        "mod": "600"
+      }
+    ],
+    "AuthEnabled": false,
+    "User": "toto",
+    "Group": "grafana"
+  }
+}

pkg/configs/main.go

@@ -0,0 +1,15 @@
+package configs
+
+type ConfigFile struct {
+	Destination string `form:"destination" json:"destination"`
+	Source      string `form:"source" json:"source"`
+	Mod         string `form:"mod" json:"mod"`
+}
+
+type TemplaterConfig struct {
+	Name   string `json:"Name"`
+	Config struct {
+		ConfigFiles []ConfigFile           `json:"ConfigFiles"`
+		Variables   map[string]interface{} `form:"-" json:"-"`
+	} `json:"Config"`
+}

pkg/templater/main.go

@@ -31,7 +31,7 @@ func ProcessGoTemplate(file string, config []byte) string {
 	tpl, err := template.New("conf").Parse(string(data))
 	utils.CheckErr(err)
 
-	utils.CheckErr(tpl.Execute(&res, confData))
+	utils.CheckErr(tpl.Execute(&res, confData["Config"]))
 
 	return res.String()
 }
@@ -63,8 +63,9 @@ func ProcessHCLTemplate(file string, config []byte) string {
 		utils.CheckErr(err)
 	}
 
+	cnfVals := varsVal.AsValueMap()
 	ctx := &hcl.EvalContext{
-		Variables: varsVal.AsValueMap(),
+		Variables: cnfVals["Config"].AsValueMap(),
 	}
 
 	for n := range ctx.Variables {