add identity

identity/address.pb.go

@@ -0,0 +1,146 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.23.0
+// 	protoc        v3.12.2
+// source: address.proto
+
+package identity
+
+import (
+	proto "github.com/golang/protobuf/proto"
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	reflect "reflect"
+	sync "sync"
+)
+
+const (
+	// Verify that this generated code is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+	// Verify that runtime/protoimpl is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
+
+// This is a compile-time assertion that a sufficiently up-to-date version
+// of the legacy proto package is being used.
+const _ = proto.ProtoPackageIsVersion4
+
+type Address struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Address string `protobuf:"bytes,1,opt,name=address,proto3" json:"address,omitempty"`
+}
+
+func (x *Address) Reset() {
+	*x = Address{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_address_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *Address) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Address) ProtoMessage() {}
+
+func (x *Address) ProtoReflect() protoreflect.Message {
+	mi := &file_address_proto_msgTypes[0]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use Address.ProtoReflect.Descriptor instead.
+func (*Address) Descriptor() ([]byte, []int) {
+	return file_address_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *Address) GetAddress() string {
+	if x != nil {
+		return x.Address
+	}
+	return ""
+}
+
+var File_address_proto protoreflect.FileDescriptor
+
+var file_address_proto_rawDesc = []byte{
+	0x0a, 0x0d, 0x61, 0x64, 0x64, 0x72, 0x65, 0x73, 0x73, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12,
+	0x08, 0x69, 0x64, 0x65, 0x6e, 0x74, 0x69, 0x74, 0x79, 0x22, 0x23, 0x0a, 0x07, 0x41, 0x64, 0x64,
+	0x72, 0x65, 0x73, 0x73, 0x12, 0x18, 0x0a, 0x07, 0x61, 0x64, 0x64, 0x72, 0x65, 0x73, 0x73, 0x18,
+	0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x07, 0x61, 0x64, 0x64, 0x72, 0x65, 0x73, 0x73, 0x62, 0x06,
+	0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+}
+
+var (
+	file_address_proto_rawDescOnce sync.Once
+	file_address_proto_rawDescData = file_address_proto_rawDesc
+)
+
+func file_address_proto_rawDescGZIP() []byte {
+	file_address_proto_rawDescOnce.Do(func() {
+		file_address_proto_rawDescData = protoimpl.X.CompressGZIP(file_address_proto_rawDescData)
+	})
+	return file_address_proto_rawDescData
+}
+
+var file_address_proto_msgTypes = make([]protoimpl.MessageInfo, 1)
+var file_address_proto_goTypes = []interface{}{
+	(*Address)(nil), // 0: identity.Address
+}
+var file_address_proto_depIdxs = []int32{
+	0, // [0:0] is the sub-list for method output_type
+	0, // [0:0] is the sub-list for method input_type
+	0, // [0:0] is the sub-list for extension type_name
+	0, // [0:0] is the sub-list for extension extendee
+	0, // [0:0] is the sub-list for field type_name
+}
+
+func init() { file_address_proto_init() }
+func file_address_proto_init() {
+	if File_address_proto != nil {
+		return
+	}
+	if !protoimpl.UnsafeEnabled {
+		file_address_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Address); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+	}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: file_address_proto_rawDesc,
+			NumEnums:      0,
+			NumMessages:   1,
+			NumExtensions: 0,
+			NumServices:   0,
+		},
+		GoTypes:           file_address_proto_goTypes,
+		DependencyIndexes: file_address_proto_depIdxs,
+		MessageInfos:      file_address_proto_msgTypes,
+	}.Build()
+	File_address_proto = out.File
+	file_address_proto_rawDesc = nil
+	file_address_proto_goTypes = nil
+	file_address_proto_depIdxs = nil
+}

identity/address.proto

@@ -0,0 +1,8 @@
+// Copyright 2024 Matthew Rich <matthewrich.conf@gmail.com>. All rights reserved.
+ 
+syntax = "proto3";
+package identity;
+
+message Address {
+  string address = 1;
+}

identity/identifier.go

@@ -0,0 +1,109 @@
+// Copyright 2024 Matthew Rich <matthewrich.conf@gmail.com>. All rights reserved.
+ 
+package identity
+
+import (
+  "os"
+  "fmt"
+  "strings"
+  "net/url"
+  "feudal/sequence"
+)
+
+var Serial sequence.Serial32
+
+var spid uint64
+var serial uint64
+var hostname string
+
+type Addresser interface {
+  Address() string
+}
+
+type Identifier interface {
+  Addresser
+  Instance() string
+  Path() string
+  Hostname() string
+  String() string
+  Parent() Identifier
+  CreateChild(string) Identifier
+}
+
+type Id struct {
+  parent Identifier
+  Name string
+  url *url.URL
+  instance string
+}
+
+func init() {
+  Serial = sequence.NewSerial32()
+  spid = uint64(os.Getpid()) << 32
+  hostname, _ = os.Hostname()
+}
+
+func New(parent Identifier, name string) Identifier {
+  url,_ := url.Parse(parent.Address())
+  url.Path += "/" + name
+  i := &Id{ parent: parent, Name: name, url: url, instance: InstanceId() }
+  return i
+}
+
+func NewRoot(name string) Identifier {
+  return &Id{ parent: nil, Name: name, url: &url.URL{ Scheme: "feudal", User: url.User(name), Host: hostname, Path: "" }, instance: InstanceId() }
+}
+
+func NewFromAddress(address string) Identifier {
+  id := &Id{ parent: nil, instance: InstanceId() }
+  id.url,_ = url.Parse(address)
+
+  elements := strings.Split(id.url.Path, "/")
+  le := len(elements)
+
+  if le == 0 {
+    id.Name = id.url.User.Username()
+  } else {
+    id.Name = elements[le - 1]
+  }
+  return id
+}
+
+func InstanceId() string {
+  return fmt.Sprintf("%x", spid | uint64(Serial()))
+}
+
+func (i *Id) Instance() string {
+  return i.instance
+}
+
+func (i *Id) Path() string {
+  return i.url.Path
+}
+
+func (i *Id) Hostname() string {
+  return i.url.Hostname()
+}
+
+func (parent *Id) CreateChild(name string) Identifier {
+  url,_ := url.Parse(parent.Address())
+  url.Path += "/" + name
+  i := &Id{ parent: parent, Name: name, url: url, instance: InstanceId() }
+  return i
+}
+
+func (i *Id) Parent() Identifier {
+  return i.parent
+}
+
+func (i *Id) Elements() []string {
+  return strings.Split(i.url.Path, "/")
+}
+
+func (i *Id) String() string {
+  return i.Address() + "#" + i.instance
+}
+
+func (i *Id) Address() string {
+  return i.url.String()
+}

identity/identifier_test.go

@@ -0,0 +1,58 @@
+// Copyright 2024 Matthew Rich <matthewrich.conf@gmail.com>. All rights reserved.
+ 
+package identity
+
+import (
+  "net/url"
+  "testing"
+)
+
+
+func setupIdentifier() Identifier {
+  root := NewRoot("sys")
+  return New(root, "test")
+}
+
+func TestNewIdentifier(t *testing.T) {
+  i := setupIdentifier()
+  if i == nil {
+    t.Errorf("Failed creating new identifier")
+  }
+}
+
+func TestNewChildIdentifier(t *testing.T) {
+  i := setupIdentifier()
+  c := i.CreateChild("newchild")
+  a := c.Address()
+  if a != i.Address() + "/newchild" {
+    t.Errorf("CreateChild() failed creating new child identifier: %s", a)
+  }
+}
+
+func TestIdentifierAddress(t *testing.T) {
+  i := setupIdentifier()
+  a := i.Address()
+  u,e := url.Parse(a)
+  if e != nil {
+    t.Errorf("Failed parsing identifier address %s", e)
+  }
+  if u.Scheme != "feudal" {
+    t.Errorf("Invalid identifier address scheme %s", u.Scheme)
+  }
+}
+
+func TestIdentifierParent(t *testing.T) {
+  i := setupIdentifier()
+  c := i.CreateChild("task")
+  u,e := url.Parse(c.Parent().Address())
+  if e != nil || u.Path != "/test" {
+    t.Errorf("Parent() returned incorrect path %s %s", u.Path, e)
+  }
+}
+
+func TestNewFromAddress(t *testing.T) {
+  i := NewFromAddress("feudal://test@hostfoo/workerbar")
+  if i.Hostname() != "hostfoo" {
+    t.Errorf("Failed generating identifier from url - hostname mismatch")
+  }
+}