preparing for v0.5

src/proxy/provider/file_provider.go

@@ -0,0 +1,50 @@
+package provider
+
+import (
+	"os"
+	"path"
+
+	"github.com/yusing/go-proxy/common"
+	E "github.com/yusing/go-proxy/error"
+	M "github.com/yusing/go-proxy/models"
+	U "github.com/yusing/go-proxy/utils"
+	W "github.com/yusing/go-proxy/watcher"
+)
+
+type FileProvider struct {
+	fileName string
+	path     string
+}
+
+func FileProviderImpl(m *M.ProxyProvider) ProviderImpl {
+	return &FileProvider{
+		fileName: m.Value,
+		path:     path.Join(common.ConfigBasePath, m.Value),
+	}
+}
+
+func Validate(data []byte) E.NestedError {
+	return U.ValidateYaml(U.GetSchema(common.ProvidersSchemaPath), data)
+}
+
+func (p *FileProvider) GetProxyEntries() (M.ProxyEntries, E.NestedError) {
+	entries := M.NewProxyEntries()
+	data, err := E.Check(os.ReadFile(p.path))
+	if err.IsNotNil() {
+		return entries, E.Failure("read file").Subject(p.fileName).With(err)
+	}
+	ne := E.Failure("validation").Subject(p.fileName)
+	if !common.NoSchemaValidation {
+		if err = Validate(data); err.IsNotNil() {
+			return entries, ne.With(err)
+		}
+	}
+	if err = entries.UnmarshalFromYAML(data); err.IsNotNil() {
+		return entries, ne.With(err)
+	}
+	return entries, E.Nil()
+}
+
+func (p *FileProvider) NewWatcher() W.Watcher {
+	return W.NewFileWatcher(p.fileName)
+}