set logging levels

.gitea/workflows/lint.yaml

@@ -9,7 +9,7 @@ jobs:
     steps:
       - uses: actions/setup-go@v4
         with:
-          go-version: "1.21.7"
+          go-version: "1.21.1"
           cache: false
 
       - name: Check out code

cmd/cli/main.go

@@ -5,6 +5,7 @@ import (
   "os"
   "flag"
   "log"
+  "log/slog"
 _ "fmt"
 _ "gopkg.in/yaml.v3"
   "decl/internal/resource"
@@ -12,6 +13,14 @@ _ "gopkg.in/yaml.v3"
 
 
 func main() {
+  var programLevel = new(slog.LevelVar)
+  logger := slog.New(slog.NewTextHandler(os.Stderr, &slog.HandlerOptions{Level: programLevel}))
+  slog.SetDefault(logger)
+  if debugLogging,ok := os.LookupEnv("DECL_DEBUG"); ok && debugLogging != "" {
+    programLevel.Set(slog.LevelDebug)
+  } else {
+    programLevel.Set(slog.LevelError)
+  }
 
   file := flag.String("resource-file", "", "Resource file path")
   resourceUri := flag.String("import-resource", "", "Add an existing resource")