update

Signed-off-by: hongming <talonwan@yunify.com>

vendor/github.com/open-policy-agent/opa/internal/version/version.go

@@ -0,0 +1,40 @@
+// Copyright 2019 The OPA Authors.  All rights reserved.
+// Use of this source code is governed by an Apache2
+// license that can be found in the LICENSE file.
+
+// Package version implements helper functions for the stored version.
+package version
+
+import (
+	"context"
+	"fmt"
+	"runtime"
+
+	"github.com/open-policy-agent/opa/storage"
+	"github.com/open-policy-agent/opa/version"
+)
+
+var versionPath = storage.MustParsePath("/system/version")
+
+// Write the build version information into storage. This makes the
+// version information available to the REPL and the HTTP server.
+func Write(ctx context.Context, store storage.Store, txn storage.Transaction) error {
+
+	if err := storage.MakeDir(ctx, store, txn, versionPath); err != nil {
+		return err
+	}
+
+	if err := store.Write(ctx, txn, storage.AddOp, versionPath, map[string]interface{}{
+		"version":         version.Version,
+		"build_commit":    version.Vcs,
+		"build_timestamp": version.Timestamp,
+		"build_hostname":  version.Hostname,
+	}); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// UserAgent defines the current OPA instances User-Agent default header value.
+var UserAgent = fmt.Sprintf("Open Policy Agent/%s (%s, %s)", version.Version, runtime.GOOS, runtime.GOARCH)