add support for configuration documents

Makefile

@@ -30,3 +30,5 @@ run:
 clean:
 	go clean -modcache
 	rm jx
+lint:
+	golangci-lint run --verbose ./...

cli_test.go

@@ -14,12 +14,29 @@ import (
 	"fmt"
 )
 
+var TempDir string
+
+func TestMain(m *testing.M) {
+	var err error 
+	TempDir, err = os.MkdirTemp("", "testcli")
+	if err != nil || TempDir == "" {
+		slog.Error("TestMain()", "error", err) 
+	} 
+
+	rc := m.Run()
+
+	os.RemoveAll(TempDir)
+	os.Exit(rc)
+} 
+
 func TestCli(t *testing.T) {
 	if _, e := os.Stat("./jx"); errors.Is(e, os.ErrNotExist) {
 		t.Skip("cli not built")
 	}
 	yaml, cliErr := exec.Command("./jx", "import", "--resource", "file://COPYRIGHT").Output()
-	slog.Info("TestCli", "err", cliErr)
+	if cliErr != nil {
+		slog.Info("Debug CLI error", "error", cliErr, "stderr", cliErr.(*exec.ExitError).Stderr)
+	}
 	assert.Nil(t, cliErr)
 	assert.NotEqual(t, "", string(yaml))
 	assert.Greater(t, len(yaml), 0)
@@ -47,7 +64,38 @@ resources:
 	defer ts.Close()
 
 	yaml, cliErr := exec.Command("./jx", "import", "--resource", ts.URL).Output()
+	if cliErr != nil {
+		slog.Info("Debug CLI error", "error", cliErr, "stderr", cliErr.(*exec.ExitError).Stderr)
+	}
 	assert.Nil(t, cliErr)
 	assert.NotEqual(t, "", string(yaml))
 	assert.Greater(t, len(yaml), 0)
 }
+
+func TestCliConfigSource(t *testing.T) {
+	if _, e := os.Stat("./jx"); errors.Is(e, os.ErrNotExist) {
+		t.Skip("cli not built")
+	}
+
+	configYaml := `
+configurations:
+- name: myhttpconnection
+  values:
+    http_user: foo
+    http_pass: bar
+`
+
+	configPath := fmt.Sprintf("%s/testconfig.yaml", TempDir)
+	f, err := os.Create(configPath)
+	assert.Nil(t, err)
+	defer f.Close()
+	_, writeErr := f.Write([]byte(configYaml))
+	assert.Nil(t, writeErr)
+
+	yaml, cliErr := exec.Command("./jx", "import", "--config", configPath, "--resource", "file://COPYRIGHT").Output()
+	if cliErr != nil {
+		slog.Info("Debug CLI error", "error", cliErr, "stderr", cliErr.(*exec.ExitError).Stderr)
+	}
+	assert.Nil(t, cliErr)
+	slog.Info("TestConfigSource", "yaml", yaml)
+}

cmd/cli/main.go

@@ -4,18 +4,19 @@ package main
 
 import (
 	"context"
-	"io"
+	"decl/internal/codec"
-  "os"
+	"decl/internal/config"
-  "flag"
-	"log/slog"
-_	"errors"
-	"fmt"
-_ "gopkg.in/yaml.v3"
 	"decl/internal/resource"
 	"decl/internal/source"
 	"decl/internal/target"
-	"decl/internal/codec"
+	_ "errors"
+	"flag"
+	"fmt"
+	_ "gopkg.in/yaml.v3"
+	"io"
+	"log/slog"
 	"net/url"
+	"os"
 )
 
 const (
@@ -38,6 +39,9 @@ var ImportResource *string
 
 var ApplyDelete *bool
 
+var ConfigPath string
+
+var ConfigDoc *config.Document = config.NewDocument()
 
 var ctx context.Context = context.Background()
 
@@ -61,6 +65,10 @@ var jxSubCommands = []SubCommand {
 		Name: "import",
 		Run:  ImportSubCommand,
 	},
+	{
+		Name: "config",
+		Run:  ConfigSubCommand,
+	},
 }
 
 func VersionUsage() {
@@ -81,12 +89,29 @@ func LoggerConfig() {
 	}
 }
 
+func LoadConfigURI(uri string) []*config.Document {
+	slog.Info("LoadConfigURI()", "uri", uri)
+	if uri != "" {
+		cs, err := config.ConfigSourceTypes.New(uri)
+		if err != nil {
+			slog.Error("Failed loading config document from source", "error", err)
+		}
+		extractConfigs, extractErr := cs.Extract(nil)
+		if extractErr != nil {
+			slog.Error("Failed loading configs from source", "error", extractErr)
+		}
+		return extractConfigs
+	}
+	return []*config.Document{config.NewDocument()}
+}
+
 func LoadSourceURI(uri string) []*resource.Document {
 	slog.Info("loading ", "uri", uri)
 	if uri != "" {
 		ds, err := source.SourceTypes.New(uri)
 		if err != nil {
 			slog.Error("Failed loading document from source", "error", err)
+			return nil
 		}
 		extractDocuments, extractErr := ds.ExtractResources(nil)
 		if extractErr != nil {
@@ -97,6 +122,31 @@ func LoadSourceURI(uri string) []*resource.Document {
 	return []*resource.Document{resource.NewDocument()}
 }
 
+func ConfigSubCommand(cmd *flag.FlagSet, output io.Writer) (err error) {
+	e := cmd.Parse(os.Args[2:])
+	if e != nil { // returns ErrHelp
+		return e
+	}
+
+	slog.Info("ConfigSubCommand", "configdoc", ConfigDoc)
+	for _, configSource := range cmd.Args() {
+		for _, argConfigDoc := range LoadConfigURI(configSource) {
+			ConfigDoc.Append(argConfigDoc)
+		}
+	}
+
+	outputTarget, err := config.ConfigTargetTypes.New(GlobalOutput)
+	if err != nil {
+		slog.Error("Failed opening target", "error", err)
+	}
+	defer outputTarget.Close()
+
+	if outputErr := outputTarget.EmitResources([]*config.Document{ConfigDoc}, nil); outputErr != nil {
+		return outputErr
+	}
+	return nil
+}
+
 func ImportSubCommand(cmd *flag.FlagSet, output io.Writer) (err error) {
 	ImportResource = cmd.String("resource", "", "(uri) Add a resource to the document.")
 	ImportMerge = cmd.Bool("merge", false, "Merge resources into a single document.")
@@ -105,6 +155,12 @@ func ImportSubCommand(cmd *flag.FlagSet, output io.Writer) (err error) {
 		return e
 	}
 
+	if ConfigPath != "" {
+		for _, argConfigDoc := range LoadConfigURI(ConfigPath) {
+			ConfigDoc.Append(argConfigDoc)
+		}
+	}
+
 	merged := resource.NewDocument()
 	documents := make([]*resource.Document, 0, 100)
 	for _, source := range cmd.Args() {
@@ -182,6 +238,13 @@ func ApplySubCommand(cmd *flag.FlagSet, output io.Writer) (err error) {
 	if e := cmd.Parse(os.Args[2:]); e != nil {
 		return e
 	}
+
+	if ConfigPath != "" {
+		for _, argConfigDoc := range LoadConfigURI(ConfigPath) {
+			ConfigDoc.Append(argConfigDoc)
+		}
+	}
+
 	var encoder codec.Encoder
 	documents := make([]*resource.Document, 0, 100)
 	for _, source := range cmd.Args() {
@@ -191,8 +254,11 @@ func ApplySubCommand(cmd *flag.FlagSet, output io.Writer) (err error) {
 		}
 	}
 
-	slog.Info("main.Apply()", "documents", documents)
+	slog.Info("main.Apply()", "documents", documents, "configdoc", ConfigDoc)
 	for _, d := range documents {
+
+		d.SetConfig(ConfigDoc)
+
 		slog.Info("main.Apply()", "doc", d)
 		var overrideState string = ""
 		if *ApplyDelete {
@@ -292,8 +358,21 @@ func main() {
 		os.Exit(1)
 	}
 
+	DefaultConfigurations, configErr := config.Configurations()
+	if configErr != nil {
+		slog.Error("Failed loading default configuration", "error", configErr)
+	}
+
+	for _, argConfigDoc := range DefaultConfigurations {
+		ConfigDoc.Append(argConfigDoc)
+	}
+
 	for _, subCmd := range jxSubCommands {
 		cmdFlagSet := flag.NewFlagSet(subCmd.Name, flag.ExitOnError)
+
+		cmdFlagSet.StringVar(&ConfigPath, "config", "/etc/jx/config.yaml", "Config file path")
+		cmdFlagSet.StringVar(&ConfigPath, "c", "/etc/jx/config.yaml", "Config file path")
+
 		GlobalOformat = cmdFlagSet.String("oformat", "yaml", "Output serialization format")
 		cmdFlagSet.StringVar(&GlobalOutput, "output", "-", "Output target (default stdout)")
 		cmdFlagSet.StringVar(&GlobalOutput, "o", "-", "Output target (default stdout)")
@@ -318,7 +397,14 @@ func main() {
 				cmdFlagSet.PrintDefaults()
 				VersionUsage()
 			}
+		case "config":
+			cmdFlagSet.Usage = func() {
+				fmt.Println("jx config source...")
+				cmdFlagSet.PrintDefaults()
+				VersionUsage()
 			}
+		}
+		slog.Info("CLI", "cmd", subCmd.Name)
 		if os.Args[1] == subCmd.Name {
 			if e := subCmd.Run(cmdFlagSet, os.Stdout); e != nil {
 				slog.Error("Failed running command", "command", os.Args[1], "error", e)

examples/golangci-lint.jx.yaml

@@ -0,0 +1,12 @@
+resources:
+- type: file
+  transition: create
+  attributes:
+    path: golangci-lint-1.55.2-linux-amd64.deb
+    sourceref: https://github.com/golangci/golangci-lint/releases/download/v1.55.2/golangci-lint-1.55.2-linux-amd64.deb
+- type: package
+  transition: create
+  attributes:
+    name: golangci-lint
+    source: golangci-lint-1.55.2-linux-amd64.deb
+    type: deb

go.mod

@@ -1,6 +1,6 @@
 module decl
 
-go 1.22.1
+go 1.22.3
 
 require (
 	gitea.rosskeen.house/pylon/luaruntime v0.0.0-20240513200425-f413d8adf7b3

internal/config/block.go

@@ -0,0 +1,134 @@
+// Copyright 2024 Matthew Rich <matthewrich.conf@gmail.com>. All rights reserved.
+
+package config
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"io"
+	"gopkg.in/yaml.v3"
+	"log/slog"
+	"decl/internal/codec"
+)
+
+type BlockType struct {
+	Name string `json:"name" yaml:"name"`
+	Type TypeName `json:"type" yaml:"type"`
+}
+
+type Block struct {
+	Name string `json:"name" yaml:"name"`
+	Type TypeName `json:"type" yaml:"type"`
+	Values Configuration `json:"values" yaml:"values"`
+}
+
+func NewBlock() *Block {
+	return &Block{ Type: "generic" }
+}
+
+func (b *Block) Clone() *Block {
+	return &Block {
+		Type: b.Type,
+		Values: b.Values.Clone(),
+	}
+}
+
+func (b *Block) Load(r io.Reader) error {
+	return codec.NewYAMLDecoder(r).Decode(b)
+}
+
+func (b *Block) LoadBlock(yamlBlock string) (err error) {
+	err = codec.NewYAMLStringDecoder(yamlBlock).Decode(b)
+	slog.Info("LoadBlock()", "yaml", yamlBlock, "object", b, "err", err)
+	return
+}
+
+func (b *Block) NewConfiguration() error {
+	uri := fmt.Sprintf("%s://", b.Type)
+	newConfig, err := ConfigTypes.New(uri)
+	b.Values = newConfig
+	return err
+}
+
+func (b *Block) GetValue(key string) (any, error) {
+	return b.Values.GetValue(key)
+}
+
+func (b *Block) Configuration() Configuration {
+	return b.Values
+}
+
+func (b *Block) SetURI(uri string) (e error) {
+	b.Values = NewConfiguration(uri)
+	if b.Values == nil {
+		return ErrUnknownConfigurationType
+	}
+	b.Type = TypeName(b.Values.Type())
+	_,e = b.Values.Read(context.Background())
+	return e
+}
+
+
+func (b *Block) UnmarshalValue(value *BlockType) error {
+	b.Name = value.Name
+	if value.Type == "" {
+		b.Type = "generic"
+	} else {
+		b.Type = value.Type
+	}
+
+	newConfig, configErr := ConfigTypes.New(fmt.Sprintf("%s://", b.Type))
+	if configErr != nil {
+		return configErr
+	}
+	b.Values = newConfig
+	return nil
+}
+
+func (b *Block) UnmarshalYAML(value *yaml.Node) error {
+	t := &BlockType{}
+	if unmarshalConfigurationTypeErr := value.Decode(t); unmarshalConfigurationTypeErr != nil {
+		return unmarshalConfigurationTypeErr
+	}
+
+	if err := b.UnmarshalValue(t); err != nil {
+		return err
+	}
+
+	configurationVals := struct {
+		Values yaml.Node `json:"values"`
+	}{}
+	if unmarshalValuesErr := value.Decode(&configurationVals); unmarshalValuesErr != nil {
+		return unmarshalValuesErr
+	}
+	if unmarshalConfigurationErr := configurationVals.Values.Decode(b.Values); unmarshalConfigurationErr != nil {
+		return unmarshalConfigurationErr
+	}
+	_, readErr := b.Values.Read(context.Background())
+	return readErr
+}
+
+func (b *Block) UnmarshalJSON(data []byte) error {
+	t := &BlockType{}
+	if unmarshalConfigurationTypeErr := json.Unmarshal(data, t); unmarshalConfigurationTypeErr != nil {
+		return unmarshalConfigurationTypeErr
+	}
+
+	if err := b.UnmarshalValue(t); err != nil {
+		return err
+	}
+
+	configurationVals := struct {
+		Values Configuration `json:"values"`
+	}{Values: b.Values}
+	if unmarshalValuesErr := json.Unmarshal(data, &configurationVals); unmarshalValuesErr != nil {
+		return unmarshalValuesErr
+	}
+	_, readErr := b.Values.Read(context.Background())
+	return readErr
+}
+
+func (b *Block) MarshalYAML() (any, error) {
+	return b, nil
+}

internal/config/block_test.go

@@ -0,0 +1,49 @@
+// Copyright 2024 Matthew Rich <matthewrich.conf@gmail.com>. All rights reserved.
+
+package config
+
+import (
+_ "fmt"
+	"github.com/stretchr/testify/assert"
+	"log"
+	"os"
+	"testing"
+	"strings"
+)
+
+var TempDir string
+
+func TestMain(m *testing.M) {
+	var err error
+	TempDir, err = os.MkdirTemp("", "testconfig")
+	if err != nil || TempDir == "" {
+		log.Fatal(err)
+	}
+
+	rc := m.Run()
+
+	os.RemoveAll(TempDir)
+	os.Exit(rc)
+}
+
+func TestNewBlock(t *testing.T) {
+	configYaml := `
+name: "foo"
+values:
+  http_user: "test"
+  http_pass: "password"
+`
+	docReader := strings.NewReader(configYaml)
+
+	block := NewBlock()
+	assert.NotNil(t, block)
+	assert.Nil(t, block.Load(docReader))
+	assert.Equal(t, "foo", block.Name)
+	val, err := block.GetValue("http_user")
+	assert.Nil(t, err)
+	assert.Equal(t, "test", val)
+
+	missingVal, missingErr := block.GetValue("content")
+	assert.ErrorIs(t, missingErr, ErrUnknownConfigurationKey)
+	assert.Nil(t, missingVal)
+}

internal/config/configs/facter.yaml

@@ -0,0 +1,9 @@
+configurations:
+- name: facts
+  type: exec
+  values:
+    path: /usr/bin/facter
+    args:
+      - "-j"
+    format: "json"
+    

internal/config/configsource.go

@@ -0,0 +1,45 @@
+// Copyright 2024 Matthew Rich <matthewrich.conf@gmail.com>. All rights reserved.
+
+package config
+
+import (
+_	"context"
+_	"encoding/json"
+_	"fmt"
+_	"gopkg.in/yaml.v3"
+_	"net/url"
+_	"regexp"
+_	"strings"
+_	"os"
+_	"io"
+_	"compress/gzip"
+_	"archive/tar"
+_	"errors"
+_	"path/filepath"
+_	"decl/internal/codec"
+	"embed"
+)
+
+type ConfigurationSelector func(b *Block) bool
+
+type ConfigSource interface {
+	Type() string
+
+	Extract(filter ConfigurationSelector) ([]*Document, error)
+}
+
+func NewConfigSource(uri string) ConfigSource {
+	s, e := ConfigSourceTypes.New(uri)
+	if e == nil {
+		return s
+	}
+	return nil
+}
+
+//go:embed configs/*.yaml
+var configFiles embed.FS
+
+func Configurations() ([]*Document, error) {
+	fs := NewConfigFS(configFiles)
+	return fs.Extract(nil)
+}

internal/config/configtarget.go

@@ -0,0 +1,30 @@
+// Copyright 2024 Matthew Rich <matthewrich.conf@gmail.com>. All rights reserved.
+
+package config
+
+import (
+_	"context"
+_	"encoding/json"
+_	"fmt"
+_	"gopkg.in/yaml.v3"
+_	"net/url"
+_	"regexp"
+_	"strings"
+_	"os"
+_	"io"
+)
+
+type ConfigTarget interface {
+	Type() string
+
+	EmitResources(documents []*Document, filter ConfigurationSelector) error
+	Close() error
+}
+
+func NewConfigTarget(uri string) ConfigTarget {
+	s, e := ConfigTargetTypes.New(uri)
+	if e == nil {
+		return s
+	}
+	return nil
+}

internal/config/configuration.go

@@ -0,0 +1,48 @@
+// Copyright 2024 Matthew Rich <matthewrich.conf@gmail.com>. All rights reserved.
+
+package config
+
+import (
+	"errors"
+	"fmt"
+_	"net/url"
+_	"decl/internal/codec"
+_	"io"
+	"decl/internal/types"
+	"decl/internal/data"
+	"strings"
+)
+
+var (
+	ErrUnknownConfigurationType             = errors.New("Unknown configuration type")
+	ErrUnknownConfigurationKey              = errors.New("Unknown configuration key")
+	ConfigTypes *types.Types[Configuration] = types.New[Configuration]()
+	ConfigSourceTypes *types.Types[ConfigSource] = types.New[ConfigSource]()
+	ConfigTargetTypes *types.Types[ConfigTarget] = types.New[ConfigTarget]()
+)
+
+type TypeName string //`json:"type"`
+
+type Configuration interface {
+	Type() string
+	data.Reader
+	GetValue(name string) (any, error)
+	Clone() Configuration
+}
+
+func NewConfiguration(uri string) Configuration {
+	c, e := ConfigTypes.New(uri)
+	if e == nil {
+		return c
+	}
+	return nil
+}
+
+func (n *TypeName) UnmarshalJSON(b []byte) error {
+	ConfigTypeName := strings.Trim(string(b), "\"")
+	if ConfigTypes.Has(ConfigTypeName) {
+		*n = TypeName(ConfigTypeName)
+		return nil
+	}
+	return fmt.Errorf("%w: %s", ErrUnknownConfigurationType, ConfigTypeName)
+}

internal/config/configuration_test.go

@@ -0,0 +1,22 @@
+// Copyright 2024 Matthew Rich <matthewrich.conf@gmail.com>. All rights reserved.
+
+package config
+
+import (
+_	"context"
+_	"fmt"
+	"github.com/stretchr/testify/assert"
+_	"log"
+_	"os"
+_	"path/filepath"
+_	"strings"
+	"testing"
+)
+
+func TestNewConfiguration(t *testing.T) {
+	configurationUri := "generic://"
+	testConfig := NewConfiguration(configurationUri)
+	assert.NotNil(t, testConfig)
+	v, _ := testConfig.GetValue("foo")
+	assert.Nil(t, v)
+}

internal/config/document.go

@@ -0,0 +1,202 @@
+// Copyright 2024 Matthew Rich <matthewrich.conf@gmail.com>. All rights reserved.
+
+package config
+
+import (
+	"errors"
+	"encoding/json"
+	"fmt"
+	"gopkg.in/yaml.v3"
+	"io"
+	"log/slog"
+_	"net/url"
+	"github.com/sters/yaml-diff/yamldiff"
+	"strings"
+	"decl/internal/codec"
+_	"context"
+)
+
+var (
+	ErrConfigUndefinedName = errors.New("Config block is missing a defined name")
+)
+
+type ConfigNamesMap[Value any] map[string]Value
+
+type Document struct {
+	names ConfigNamesMap[*Block]
+	ConfigBlocks []Block `json:"configurations" yaml:"configurations"`
+}
+
+func NewDocument() *Document {
+	return &Document{ names: make(ConfigNamesMap[*Block]) }
+}
+
+func (d *Document) Filter(filter ConfigurationSelector) []*Block {
+	configurations := make([]*Block, 0, len(d.ConfigBlocks))
+	for i := range d.ConfigBlocks {
+		filterConfig := &d.ConfigBlocks[i]
+		if filter == nil || filter(filterConfig) {
+			configurations = append(configurations, &d.ConfigBlocks[i])
+		}
+	}
+	return configurations
+}
+
+func (d *Document) Clone() *Document {
+	clone := NewDocument()
+	clone.ConfigBlocks = make([]Block, len(d.ConfigBlocks))
+	for i, res := range d.ConfigBlocks {
+		clone.ConfigBlocks[i] = *res.Clone()
+	}
+	return clone
+}
+
+func (d *Document) Load(r io.Reader) error {
+	c := codec.NewYAMLDecoder(r)
+	return c.Decode(d);
+}
+
+func (d *Document) Validate() error {
+	jsonDocument, jsonErr := d.JSON()
+	if jsonErr == nil {
+		s := NewSchema("document")
+		err := s.Validate(string(jsonDocument))
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func (d *Document) Configurations() []Block {
+	return d.ConfigBlocks
+}
+
+func (d *Document) Generate(w io.Writer) error {
+	e := codec.NewYAMLEncoder(w)
+	err := e.Encode(d);
+	if err == nil {
+		return e.Close()
+	}
+	e.Close()
+	return err
+}
+
+func (d *Document) Append(doc *Document) {
+	if doc != nil {
+		for i := range doc.ConfigBlocks {
+			slog.Info("Document.Append()", "doc", doc, "block", doc.ConfigBlocks[i], "targetdoc", d)
+			d.AddConfigurationBlock(doc.ConfigBlocks[i].Name, doc.ConfigBlocks[i].Type, doc.ConfigBlocks[i].Values)
+		}
+	}
+}
+
+func (d *Document) AddConfigurationBlock(configurationName string, configurationType TypeName, configuration Configuration) {
+	cfg := NewBlock()
+	cfg.Name = configurationName
+	cfg.Type = configurationType
+	cfg.Values = configuration
+	d.names[cfg.Name] = cfg
+	d.ConfigBlocks = append(d.ConfigBlocks, *cfg)
+}
+
+func (d *Document) AddConfiguration(uri string) error {
+	cfg := NewBlock()
+	if e := cfg.SetURI(uri); e != nil {
+		return e
+	}
+	if cfg.Name == "" {
+		return ErrConfigUndefinedName
+	}
+	d.names[cfg.Name] = cfg
+	d.ConfigBlocks = append(d.ConfigBlocks, *cfg)
+	return nil
+}
+
+func (d *Document) Has(name string) bool {
+	_, ok := d.names[name]
+	return ok
+}
+
+func (d *Document) Get(name string) *Block {
+	return d.names[name]
+}
+
+func (d *Document) JSON() ([]byte, error) {
+	return json.Marshal(d)
+}
+
+func (d *Document) YAML() ([]byte, error) {
+	return yaml.Marshal(d)
+}
+
+func (d *Document) IndexName() error {
+	for _, b := range d.ConfigBlocks {
+		d.names[b.Name] = &b
+	}
+	return nil
+}
+
+func (d *Document) UnmarshalYAML(value *yaml.Node) error {
+	documentBlocks := struct {
+		ConfigBlocks *[]Block `json:"configurations" yaml:"configurations"`
+	}{ ConfigBlocks: &d.ConfigBlocks }
+	if unmarshalDocumentErr := value.Decode(documentBlocks); unmarshalDocumentErr != nil {
+		return unmarshalDocumentErr
+	}
+	return d.IndexName()
+}
+
+func (d *Document) UnmarshalJSON(data []byte) error {
+	documentBlocks := struct {
+		ConfigBlocks *[]Block `json:"configurations" yaml:"configurations"`
+	}{ ConfigBlocks: &d.ConfigBlocks }
+	if unmarshalDocumentErr := json.Unmarshal(data, &documentBlocks); unmarshalDocumentErr != nil {
+		return unmarshalDocumentErr
+	}
+	return d.IndexName()
+}
+
+func (d *Document) Diff(with *Document, output io.Writer) (returnOutput string, diffErr error) {
+	defer func() {
+		if r := recover(); r != nil {
+			returnOutput = ""
+			diffErr = fmt.Errorf("%s", r)
+		}
+	}()
+	slog.Info("Document.Diff()")
+	opts := []yamldiff.DoOptionFunc{}
+	if output == nil {
+		output = &strings.Builder{}
+	}
+	ydata, yerr := d.YAML()
+	if yerr != nil {
+		return "", yerr
+	}
+	yamlDiff,yamlDiffErr := yamldiff.Load(string(ydata))
+	if yamlDiffErr != nil {
+		return "", yamlDiffErr
+	}
+	
+	wdata,werr := with.YAML()
+	if werr != nil {
+		return "", werr
+	}
+	withDiff,withDiffErr := yamldiff.Load(string(wdata))
+	if withDiffErr != nil {
+		return "", withDiffErr
+	}
+	
+	for _,docDiffResults := range yamldiff.Do(yamlDiff, withDiff, opts...) {
+		slog.Info("Diff()", "diff", docDiffResults, "dump", docDiffResults.Dump())
+		_,e := output.Write([]byte(docDiffResults.Dump()))
+		if e != nil {
+			return "", e
+		}
+	}
+	slog.Info("Document.Diff() ", "document.yaml", ydata, "with.yaml", wdata)
+	if stringOutput, ok := output.(*strings.Builder); ok {
+		return stringOutput.String(), nil
+	}
+	return "", nil
+}

internal/config/document_test.go

@@ -0,0 +1,53 @@
+// Copyright 2024 Matthew Rich <matthewrich.conf@gmail.com>. All rights reserved.
+
+package config
+
+import (
+	"github.com/stretchr/testify/assert"
+	"strings"
+	"testing"
+)
+
+func TestNewDocument(t *testing.T) {
+	d := NewDocument()
+	assert.NotNil(t, d)
+}
+
+func TestDocumentLoader(t *testing.T) {
+	document := `
+---
+configurations:
+- type: generic
+  name: global
+  values:
+    install_dir: /opt/jx
+- name: system
+  values:
+    dist: ubuntu
+    release: focal
+`
+	d := NewDocument()
+	assert.NotNil(t, d)
+
+	docReader := strings.NewReader(document)
+
+	e := d.Load(docReader)
+	assert.Nil(t, e)
+
+	configurations := d.Configurations()
+	assert.Equal(t, 2, len(configurations))
+
+	b := d.Get("system")
+	assert.NotNil(t, b)
+	cfg := b.Configuration()
+	value, valueErr := cfg.GetValue("dist")
+	assert.Nil(t, valueErr)
+	assert.Equal(t, "ubuntu", value)
+}
+
+func TestDocumentJSONSchema(t *testing.T) {
+	document := NewDocument()
+	document.ConfigBlocks = []Block{}
+	e := document.Validate()
+	assert.Nil(t, e)
+}

internal/config/exec.go

@@ -0,0 +1,121 @@
+// Copyright 2024 Matthew Rich <matthewrich.conf@gmail.com>. All rights reserved.
+
+package config
+
+import (
+	"context"
+	"io"
+	"net/url"
+	"decl/internal/codec"
+	"decl/internal/command"
+	"encoding/json"
+	"gopkg.in/yaml.v3"
+)
+
+func init() {
+	ConfigTypes.Register([]string{"exec"}, func(u *url.URL) Configuration {
+		x := NewExec()
+		return x
+	})
+}
+
+type Exec struct {
+	Path string `yaml:"path" json:"path"`
+	Args []command.CommandArg `yaml:"args" json:"args"`
+	ValuesFormat codec.Format `yaml:"format" json:"format"`
+	Values map[string]any `yaml:"values" json:"values"`
+	ReadCommand *command.Command `yaml:"-" json:"-"`
+}
+
+func NewExec() *Exec {
+	x := &Exec{}
+	return x
+}
+
+func (x *Exec) Read(ctx context.Context) ([]byte, error) {
+	out, err := x.ReadCommand.Execute(x)
+	if err != nil {
+		return nil, err
+	}
+	exErr := x.ReadCommand.Extractor(out, x)
+	if exErr != nil {
+		return nil, exErr
+	}
+	return nil, exErr
+}
+
+func (x *Exec) Load(r io.Reader) (err error) {
+	err = codec.NewYAMLDecoder(r).Decode(x)
+	if err == nil {
+		_, err = x.Read(context.Background())
+	}
+	return err
+}
+
+func (x *Exec) LoadYAML(yamlData string) (err error) {
+	err = codec.NewYAMLStringDecoder(yamlData).Decode(x)
+	if err == nil {
+		_, err = x.Read(context.Background())
+	}
+	return err
+}
+
+func (x *Exec) UnmarshalJSON(data []byte) error {
+	if unmarshalErr := json.Unmarshal(data, x); unmarshalErr != nil {
+		return unmarshalErr
+	}
+	x.NewReadConfigCommand()
+	return nil
+}
+
+func (x *Exec) UnmarshalYAML(value *yaml.Node) error {
+	type decodeExec Exec
+	if unmarshalErr := value.Decode((*decodeExec)(x)); unmarshalErr != nil {
+		return unmarshalErr
+	}
+	x.NewReadConfigCommand()
+	return nil
+}
+
+
+func (x *Exec) Clone() Configuration {
+	clone := NewExec()
+	clone.Path = x.Path
+	clone.Args = x.Args
+	clone.ValuesFormat = x.ValuesFormat
+	clone.Values = x.Values
+	clone.ReadCommand = x.ReadCommand
+	return clone
+}
+
+func (x *Exec) Type() string {
+	return "exec"
+}
+
+func (x *Exec) GetValue(name string) (result any, err error) {
+	var ok bool
+	if result, ok = x.Values[name]; !ok {
+		err = ErrUnknownConfigurationKey
+	}
+	return
+}
+
+
+func (ex *Exec) NewReadConfigCommand() {
+	ex.ReadCommand = command.NewCommand()
+	ex.ReadCommand.Path = ex.Path
+	ex.ReadCommand.Args = ex.Args
+
+	ex.ReadCommand.Extractor = func(out []byte, target any) error {
+		x := target.(*Exec)
+		switch x.ValuesFormat {
+		case codec.FormatYaml:
+			return codec.NewYAMLStringDecoder(string(out)).Decode(&x.Values)
+		case codec.FormatJson:
+			return codec.NewJSONStringDecoder(string(out)).Decode(&x.Values)
+		case codec.FormatProtoBuf:
+		}
+		return nil
+	}
+}
+

internal/config/file.go

@@ -0,0 +1,137 @@
+// Copyright 2024 Matthew Rich <matthewrich.conf@gmail.com>. All rights reserved.
+
+package config
+
+import (
+_	"context"
+_	"encoding/json"
+_	"fmt"
+_	"gopkg.in/yaml.v3"
+	"net/url"
+	"path/filepath"
+	"decl/internal/transport"
+	"decl/internal/codec"
+_	"os"
+	"io"
+	"errors"
+	"log/slog"
+)
+
+type ConfigFile struct {
+	Path string `yaml:"path" json:"path"`
+	Format codec.Format `yaml:"format" json:"format"`
+	reader *transport.Reader `yaml:"-" json:"-"`
+	writer *transport.Writer `yaml:"-" json:"-"`
+	encoder codec.Encoder `yaml:"-" json:"-"`
+	decoder codec.Decoder `yaml:"-" json:"-"`
+}
+
+func NewConfigFile() *ConfigFile {
+	return &ConfigFile{ Format: codec.FormatYaml }
+}
+
+func NewConfigFileFromURI(u *url.URL) *ConfigFile {
+	t := NewConfigFile()
+	if u.Scheme == "file" {
+		t.Path,_ = filepath.Abs(filepath.Join(u.Hostname(), u.RequestURI()))
+	} else {
+		t.Path = filepath.Join(u.Hostname(), u.Path)
+	}
+	return t
+}
+
+func NewConfigFileSource(u *url.URL) *ConfigFile {
+	t := NewConfigFileFromURI(u)
+	t.reader,_ = transport.NewReader(u)
+	if formatErr := t.Format.Set(t.reader.ContentType()); formatErr != nil {
+		panic(formatErr)
+	}
+	t.decoder = codec.NewDecoder(t.reader, t.Format)
+	return t
+}
+
+func NewConfigFileTarget(u *url.URL) *ConfigFile {
+	t := NewConfigFileFromURI(u)
+	t.writer,_ = transport.NewWriter(u)
+	if formatErr := t.Format.Set(t.writer.ContentType()); formatErr != nil {
+		panic(formatErr)
+	}
+	t.encoder = codec.NewEncoder(t.writer, t.Format)
+	return t
+}
+
+func init() {
+	ConfigSourceTypes.Register([]string{"file"}, func(u *url.URL) ConfigSource {
+		return NewConfigFileSource(u)
+	})
+
+	ConfigSourceTypes.Register([]string{"pb","pb.gz","json","json.gz","yaml","yml","yaml.gz","yml.gz"}, func(u *url.URL) ConfigSource {
+		return NewConfigFileSource(u)
+	})
+
+	ConfigTargetTypes.Register([]string{"file"}, func(u *url.URL) ConfigTarget {
+		return NewConfigFileTarget(u)
+	})
+
+	ConfigTargetTypes.Register([]string{"pb","pb.gz","json","json.gz","yaml","yml","yaml.gz","yml.gz"}, func(u *url.URL) ConfigTarget {
+		return NewConfigFileTarget(u)
+	})
+}
+
+
+func (c *ConfigFile) Type() string { return "file" }
+
+func (c *ConfigFile) Extract(filter ConfigurationSelector) ([]*Document, error) {
+	documents := make([]*Document, 0, 100)
+
+	defer func() {
+		c.reader.Close()
+	}()
+
+	slog.Info("Extract()", "documents", documents)  
+	index := 0
+	for {
+		doc := NewDocument()
+		e := c.decoder.Decode(doc)
+		if errors.Is(e, io.EOF) {
+			break
+		}
+		if e != nil {
+			return documents, e
+		}
+		slog.Info("Extract()", "res", doc.ConfigBlocks[0].Values)  
+		if validationErr := doc.Validate(); validationErr != nil {
+			return documents, validationErr
+		}
+		documents = append(documents, doc)
+		index++
+	}
+	return documents, nil
+}
+
+func (c *ConfigFile) EmitResources(documents []*Document, filter ConfigurationSelector) (error) {
+	defer func() {
+		c.encoder.Close()
+		c.writer.Close()
+	}()
+
+	for _, doc := range documents {
+		emitDoc := NewDocument()
+		if validationErr := doc.Validate(); validationErr != nil {
+			return validationErr
+		}
+		for _, block := range doc.Filter(filter) {
+			emitDoc.ConfigBlocks = append(emitDoc.ConfigBlocks, *block)
+		}
+		slog.Info("EmitResources", "doctarget", c, "encoder", c.encoder, "emit", emitDoc)
+		if documentErr := c.encoder.Encode(emitDoc); documentErr != nil {
+			slog.Info("EmitResources", "err", documentErr)
+			return documentErr
+		}
+	}
+	return nil
+}
+
+func (c *ConfigFile) Close() (error) {
+	return nil
+}

internal/config/fs.go

@@ -0,0 +1,109 @@
+// Copyright 2024 Matthew Rich <matthewrich.conf@gmail.com>. All rights reserved.
+
+package config
+
+import (
+_	"context"
+_	"encoding/json"
+_	"fmt"
+_	"gopkg.in/yaml.v3"
+	"net/url"
+	"path/filepath"
+	"decl/internal/codec"
+	"os"
+	"io"
+	"errors"
+	"io/fs"
+	"log/slog"
+)
+
+
+type ConfigFS struct {
+	Path string `yaml:"path" json:"path"`
+	subDirsStack []fs.FS `yaml:"-" json:"-"`
+	fsys fs.FS `yaml:"-" json:"-"`
+}
+
+func NewConfigFS(fsys fs.FS) *ConfigFS {
+	return &ConfigFS{
+		subDirsStack: make([]fs.FS, 0, 100),
+		fsys: fsys,
+	}
+}
+
+func init() {
+	ConfigSourceTypes.Register([]string{"fs"}, func(u *url.URL) ConfigSource {
+
+		t := NewConfigFS(nil)
+		t.Path,_ = filepath.Abs(filepath.Join(u.Hostname(), u.RequestURI()))
+		t.fsys = os.DirFS(t.Path)
+		return t
+	})
+
+}
+
+func (c *ConfigFS) Type() string { return "fs" }
+
+func (c *ConfigFS) ExtractDirectory(fsys fs.FS) ([]*Document, error) {
+	documents := make([]*Document, 0, 100)
+
+	files, err := fs.ReadDir(fsys, ".")
+	if err != nil {
+		return nil, err
+	}
+
+	for _,file := range files {
+
+		slog.Info("ConfigFS.ExtractDirectory", "file", file)
+		if file.IsDir() {
+			dir, subErr := fs.Sub(fsys, file.Name())
+			if subErr != nil {
+				return nil, subErr
+			}
+			c.subDirsStack = append(c.subDirsStack, dir)
+		} else {
+			fileHandle, fileErr := fsys.Open(file.Name())
+			if fileErr != nil {
+				return nil, fileErr
+			}
+			decoder := codec.NewYAMLDecoder(fileHandle)
+			doc := NewDocument()
+			e := decoder.Decode(doc)
+			if errors.Is(e, io.EOF) {
+				break
+			}
+			if e != nil {
+				return documents, e
+			}
+			slog.Info("ConfigFS.ExtractDirectory", "doc", doc)
+			if validationErr := doc.Validate(); validationErr != nil {
+				return documents, validationErr
+			}
+			documents = append(documents, doc)
+		}
+	}
+	return documents, nil
+}
+
+func (c *ConfigFS) Extract(filter ConfigurationSelector) ([]*Document, error) {
+	documents := make([]*Document, 0, 100)
+
+	path := c.fsys
+	c.subDirsStack = append(c.subDirsStack, path)
+
+	for {
+		if len(c.subDirsStack) == 0 {
+			break
+		}
+		var dirPath fs.FS
+		dirPath, c.subDirsStack = c.subDirsStack[len(c.subDirsStack) - 1], c.subDirsStack[:len(c.subDirsStack) - 1]
+		docs, dirErr := c.ExtractDirectory(dirPath)
+		if dirErr != nil {
+			return documents, dirErr
+		}
+                
+		documents = append(documents, docs...)
+	}
+	return documents, nil
+}
+

internal/config/generic.go

@@ -0,0 +1,48 @@
+// Copyright 2024 Matthew Rich <matthewrich.conf@gmail.com>. All rights reserved.
+
+package config
+
+import (
+	"context"
+	"encoding/json"
+	"net/url"
+)
+
+func init() {
+	ConfigTypes.Register([]string{"generic"}, func(u *url.URL) Configuration {
+		g := NewGeneric()
+		return g
+	})
+}
+
+type Generic map[string]any
+
+func NewGeneric() *Generic {
+	g := make(Generic)
+	return &g
+}
+
+func (g *Generic) Clone() Configuration {
+	jsonGeneric, _ := json.Marshal(g)
+	clone := make(Generic)
+	if unmarshalErr := json.Unmarshal(jsonGeneric, &clone); unmarshalErr != nil {
+		panic(unmarshalErr)
+	}
+	return &clone
+}
+
+func (g *Generic) Type() string {
+	return "generic"
+}
+
+func (g *Generic) Read(context.Context) ([]byte, error) {
+	return nil, nil
+}
+
+func (g *Generic) GetValue(name string) (result any, err error) {
+	var ok bool
+	if result, ok = (*g)[name]; !ok {
+		err = ErrUnknownConfigurationKey
+	}
+	return
+}

internal/config/generic_test.go

@@ -0,0 +1,13 @@
+// Copyright 2024 Matthew Rich <matthewrich.conf@gmail.com>. All rights reserved.
+
+package config
+
+import (
+	"github.com/stretchr/testify/assert"
+	"testing"
+)
+
+func TestNewGenericConfig(t *testing.T) {
+	g := NewGeneric()
+	assert.NotNil(t, g)
+}

internal/config/schema.go

@@ -0,0 +1,54 @@
+// Copyright 2024 Matthew Rich <matthewrich.conf@gmail.com>. All rights reserved.
+
+package config
+
+import (
+	"errors"
+	"fmt"
+	"github.com/xeipuuv/gojsonschema"
+	"strings"
+	"embed"
+	"net/http"
+	"log/slog"
+)
+
+//go:embed schemas/*.schema.json
+var schemaFiles embed.FS
+
+type Schema struct {
+	schema gojsonschema.JSONLoader
+}
+
+func NewSchema(name string) *Schema {
+	path := fmt.Sprintf("file://schemas/%s.schema.json", name)
+
+	return &Schema{schema: gojsonschema.NewReferenceLoaderFileSystem(path, http.FS(schemaFiles))}
+}
+
+func (s *Schema) Validate(source string) error {
+	loader := gojsonschema.NewStringLoader(source)
+	result, err := gojsonschema.Validate(s.schema, loader)
+
+	if err != nil {
+		slog.Info("schema error", "source", source, "schema", s.schema, "result", result, "err",  err)
+		return err
+	}
+	slog.Info("schema", "source", source, "schema", s.schema, "result", result, "err",  err)
+
+	if !result.Valid() {
+		schemaErrors := strings.Builder{}
+		for _, err := range result.Errors() {
+			schemaErrors.WriteString(err.String() + "\n")
+		}
+		return errors.New(schemaErrors.String())
+	}
+	return nil
+}
+
+func (s *Schema) ValidateSchema() error {
+	sl := gojsonschema.NewSchemaLoader()
+	sl.Validate = true
+	schemaErr := sl.AddSchemas(s.schema)
+	slog.Info("validate schema definition", "schemaloader", sl, "err", schemaErr)
+	return schemaErr
+}

internal/config/schema_test.go

@@ -0,0 +1,49 @@
+// Copyright 2024 Matthew Rich <matthewrich.conf@gmail.com>. All rights reserved.
+
+package config 
+
+import (
+	"encoding/json"
+	"github.com/stretchr/testify/assert"
+	"testing"
+)
+
+func TestNewSchema(t *testing.T) {
+	s := NewSchema("document")
+	assert.NotEqual(t, nil, s)
+}
+
+func TestSchemaValidateJSON(t *testing.T) {
+//	ctx := context.Background()
+	s := NewSchema("block")
+	assert.NotNil(t, s)
+
+	assert.Nil(t, s.ValidateSchema())
+
+	configBlockYaml := `
+type: "generic"
+name: "foo"
+values:
+  bar: quuz
+`
+
+	testConfig := NewBlock()
+	e := testConfig.LoadBlock(configBlockYaml)
+	assert.Nil(t, e)
+	assert.Equal(t, "foo", testConfig.Name)
+
+	jsonDoc, jsonErr := json.Marshal(testConfig)
+	assert.Nil(t, jsonErr)
+
+	schemaErr := s.Validate(string(jsonDoc))
+	assert.Nil(t, schemaErr)
+}
+
+/*
+func TestSchemaValidateSchema(t *testing.T) {
+  s := NewSchema("document")
+  assert.NotNil(t, s)
+
+	assert.Nil(t, s.ValidateSchema())
+}
+*/

internal/config/schemas/block.schema.json

@@ -0,0 +1,22 @@
+{
+  "$id": "block.schema.json",
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "block",
+  "type": "object",
+  "required": [ "name", "values" ],
+  "properties": {
+    "name": {
+      "type": "string",
+      "description": "Config block name",
+      "minLength": 2
+    },
+    "type": {
+      "type": "string",
+      "description": "Config type name.",
+      "enum": [ "generic", "exec" ]
+    },
+    "values": {
+      "type": "object"
+    }
+  }
+}

internal/config/schemas/document.schema.json

@@ -0,0 +1,19 @@
+{
+  "$id": "document.schema.json",
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "document",
+  "type": "object",
+  "required": [ "configurations" ],
+  "properties": {
+    "configurations": {
+      "type": "array",
+      "description": "Configurations list",
+      "items": {
+        "oneOf": [
+          { "$ref": "block.schema.json" }
+        ]
+      }
+    }
+  }
+}
+

internal/resource/config.go

@@ -0,0 +1,11 @@
+// Copyright 2024 Matthew Rich <matthewrich.conf@gmail.com>. All rights reserved.
+
+package resource
+
+import (
+)
+
+type ConfigurationValueGetter interface {
+	GetValue(key string) (any, error)
+}
+

internal/resource/container.go

@@ -77,11 +77,12 @@ type Container struct {
 
 	State string `yaml:"state,omitempty" json:"state,omitempty"`
 
+	config ConfigurationValueGetter
 	apiClient ContainerClient
 }
 
 func init() {
-	ResourceTypes.Register("container", func(u *url.URL) Resource {
+	ResourceTypes.Register([]string{"container"}, func(u *url.URL) Resource {
 		c := NewContainer(nil)
 		c.Name = filepath.Join(u.Hostname(), u.Path)
 		return c
@@ -158,6 +159,10 @@ func (c *Container) SetURI(uri string) error {
 	return e
 }
 
+func (c *Container) UseConfig(config ConfigurationValueGetter) {
+	c.config = config
+}
+
 func (c *Container) JSON() ([]byte, error) {
 	return json.Marshal(c)
 }
@@ -321,6 +326,14 @@ func (c *Container) Read(ctx context.Context) ([]byte, error) {
 		}
 	}
 
+	if inspectErr := c.Inspect(ctx, containerID); inspectErr != nil {
+		return nil, fmt.Errorf("%w: container %s", inspectErr, containerID)
+	}
+	slog.Info("Read() ", "type", c.Type(), "name", c.Name, "Id", c.Id)
+	return yaml.Marshal(c)
+}
+
+func (c *Container) Inspect(ctx context.Context, containerID string) error {
 	containerJSON, err := c.apiClient.ContainerInspect(ctx, containerID)
 	if client.IsErrNotFound(err) {
 		c.State = "absent"
@@ -328,8 +341,12 @@ func (c *Container) Read(ctx context.Context) ([]byte, error) {
 		c.State = "present"
 		c.Id = containerJSON.ID
 		if c.Name == "" {
+			if containerJSON.Name[0] == '/' {
+				c.Name = containerJSON.Name[1:]
+			} else {
 				c.Name = containerJSON.Name
 			}
+		}
 		c.Path = containerJSON.Path
 		c.Image = containerJSON.Image
 		if containerJSON.State != nil {
@@ -343,8 +360,7 @@ func (c *Container) Read(ctx context.Context) ([]byte, error) {
 		c.RestartCount = containerJSON.RestartCount
 		c.Driver = containerJSON.Driver
 	}
-	slog.Info("Read() ", "type", c.Type(), "name", c.Name, "Id", c.Id)
+	return nil
-	return yaml.Marshal(c)
 }
 
 func (c *Container) Delete(ctx context.Context) error {

internal/resource/container_image.go

@@ -42,11 +42,12 @@ type ContainerImage struct {
 	Comment					string								`json:"comment,omitempty" yaml:"comment,omitempty"`
 	State string `yaml:"state,omitempty" json:"state,omitempty"`
 
+	config ConfigurationValueGetter
 	apiClient ContainerImageClient
 }
 
 func init() {
-	ResourceTypes.Register("container-image", func(u *url.URL) Resource {
+	ResourceTypes.Register([]string{"container-image"}, func(u *url.URL) Resource {
 		c := NewContainerImage(nil)
 		c.Name = strings.Join([]string{u.Hostname(), u.Path}, ":")
 		return c
@@ -122,6 +123,10 @@ func (c *ContainerImage) SetURI(uri string) error {
 	return e
 }
 
+func (c *ContainerImage) UseConfig(config ConfigurationValueGetter) {
+	c.config = config
+}
+
 func (c *ContainerImage) JSON() ([]byte, error) {
 	return json.Marshal(c)
 }

internal/resource/container_network.go

@@ -38,11 +38,12 @@ type ContainerNetwork struct {
 
 	State string `yaml:"state"`
 
+	config ConfigurationValueGetter
 	apiClient ContainerNetworkClient
 }
 
 func init() {
-	ResourceTypes.Register("container-network", func(u *url.URL) Resource {
+	ResourceTypes.Register([]string{"container-network"}, func(u *url.URL) Resource {
 		n := NewContainerNetwork(nil)
 		n.Name = filepath.Join(u.Hostname(), u.Path)
 		return n
@@ -115,6 +116,10 @@ func (n *ContainerNetwork) SetURI(uri string) error {
 	return e
 }
 
+func (n *ContainerNetwork) UseConfig(config ConfigurationValueGetter) {
+	n.config = config
+}
+
 func (n *ContainerNetwork) JSON() ([]byte, error) {
 	return json.Marshal(n)
 }

internal/resource/declaration.go

@@ -3,6 +3,7 @@
 package resource
 
 import (
+_	"errors"
 	"context"
 	"encoding/json"
 	"fmt"
@@ -12,18 +13,25 @@ import (
 _	"gitea.rosskeen.house/rosskeen.house/machine"
 	"gitea.rosskeen.house/pylon/luaruntime"
 	"decl/internal/codec"
+	"decl/internal/config"
 )
 
+type ConfigName string
+
 type DeclarationType struct {
 	Type TypeName `json:"type" yaml:"type"`
 	Transition string `json:"transition,omitempty" yaml:"transition,omitempty"`
+	Config ConfigName `json:"config,omitempty" yaml:"config,omitempty"`
 }
 
 type Declaration struct {
 	Type TypeName `json:"type" yaml:"type"`
 	Transition string `json:"transition,omitempty" yaml:"transition,omitempty"`
 	Attributes Resource `json:"attributes" yaml:"attributes"`
+	Config ConfigName `json:"config,omitempty" yaml:"config,omitempty"`
 	runtime luaruntime.LuaRunner
+	document *Document
+	configBlock *config.Block
 }
 
 type ResourceLoader interface {
@@ -38,6 +46,10 @@ func NewDeclaration() *Declaration {
 	return &Declaration{}
 }
 
+func (d *Declaration) SetDocument(newDocument *Document) {
+	d.document = newDocument
+}
+
 func (d *Declaration) ResolveId(ctx context.Context) string {
 	defer func() {
 		if r := recover(); r != nil {
@@ -58,6 +70,7 @@ func (d *Declaration) Clone() *Declaration {
     Transition: d.Transition,
 		Attributes: d.Attributes.Clone(),
 		runtime: luaruntime.New(),
+		Config: d.Config,
 	}
 }
 
@@ -110,6 +123,15 @@ func (d *Declaration) Apply() (result error) {
 	return result
 }
 
+func (d *Declaration) SetConfig(configDoc *config.Document) {
+	if configDoc != nil {
+		if configDoc.Has(string(d.Config)) {
+			d.configBlock = configDoc.Get(string(d.Config))
+			d.Attributes.UseConfig(d.configBlock)
+		}
+	}
+}
+
 func (d *Declaration) SetURI(uri string) error {
 	slog.Info("Declaration.SetURI()", "uri", uri, "declaration", d)
 	d.Attributes = NewResource(uri)
@@ -125,6 +147,7 @@ func (d *Declaration) SetURI(uri string) error {
 func (d *Declaration) UnmarshalValue(value *DeclarationType) error {
 	d.Type = value.Type
 	d.Transition = value.Transition
+	d.Config = value.Config
 	newResource, resourceErr := ResourceTypes.New(fmt.Sprintf("%s://", value.Type))
 	if resourceErr != nil {
 		return resourceErr

internal/resource/declaration_test.go

@@ -10,6 +10,7 @@ import (
 	_ "log"
 	_ "os"
 	"path/filepath"
+	"decl/internal/types"
 	"testing"
 )
 
@@ -70,7 +71,7 @@ func TestDeclarationNewResource(t *testing.T) {
 	assert.NotNil(t, resourceDeclaration)
 
 	errNewUnknownResource := resourceDeclaration.NewResource()
-	assert.ErrorIs(t, errNewUnknownResource, ErrUnknownResourceType)
+	assert.ErrorIs(t, errNewUnknownResource, types.ErrUnknownType)
 
 	resourceDeclaration.Type = "file"
 	errNewFileResource := resourceDeclaration.NewResource()

internal/resource/document.go

@@ -12,15 +12,25 @@ _	"net/url"
 	"github.com/sters/yaml-diff/yamldiff"
 	"strings"
 	"decl/internal/codec"
+	"decl/internal/types"
+	"decl/internal/config"
 	"context"
 )
 
+type ResourceMap[Value any] map[string]Value
+
 type Document struct {
+  uris ResourceMap[*Declaration]
 	ResourceDecls []Declaration `json:"resources" yaml:"resources"`
+	config *config.Document
 }
 
 func NewDocument() *Document {
-	return &Document{}
+	return &Document{ uris: make(ResourceMap[*Declaration]) }
+}
+
+func (d *Document) Types() *types.Types[Resource] {
+	return ResourceTypes
 }
 
 func (d *Document) Filter(filter ResourceSelector) []*Declaration {
@@ -34,18 +44,35 @@ func (d *Document) Filter(filter ResourceSelector) []*Declaration {
 	return resources
 }
 
+func (d *Document) GetResource(uri string) *Declaration {
+	if decl, ok := d.uris[uri]; ok {
+		return decl
+	}
+	return nil
+}
+
 func (d *Document) Clone() *Document {
 	clone := NewDocument()
+	clone.config = d.config
 	clone.ResourceDecls = make([]Declaration, len(d.ResourceDecls))
 	for i, res := range d.ResourceDecls {
 		clone.ResourceDecls[i] = *res.Clone()
+		clone.ResourceDecls[i].SetDocument(clone)
+		clone.ResourceDecls[i].SetConfig(d.config)
 	}
 	return clone
 }
 
-func (d *Document) Load(r io.Reader) error {
+func (d *Document) Load(r io.Reader) (err error) {
 	c := codec.NewYAMLDecoder(r)
-	return c.Decode(d);
+	err = c.Decode(d)
+	if err == nil {
+		for i := range d.ResourceDecls {
+			d.ResourceDecls[i].SetDocument(d)
+			d.ResourceDecls[i].SetConfig(d.config)
+		}
+	}
+	return
 }
 
 func (d *Document) Validate() error {
@@ -68,6 +95,14 @@ func (d *Document) Validate() error {
 	return nil
 }
 
+func (d *Document) SetConfig(config *config.Document) {
+	d.config = config
+}
+
+func (d *Document) ConfigDoc() *config.Document {
+	return d.config
+}
+
 func (d *Document) Resources() []Declaration {
 	return d.ResourceDecls
 }
@@ -95,6 +130,7 @@ func (d *Document) Apply(state string) error {
 		if state != "" {
 			d.ResourceDecls[idx].Transition = state
 		}
+		d.ResourceDecls[idx].SetConfig(d.config)
 		if e := d.ResourceDecls[idx].Apply(); e != nil {
 			slog.Error("Document.Apply() error applying resource", "index", idx, "uri", d.ResourceDecls[idx].Resource().URI(), "resource", d.ResourceDecls[idx].Resource(), "error", e)
 			return e
@@ -117,11 +153,17 @@ func (d *Document) Generate(w io.Writer) error {
 	return err
 }
 
+func (d *Document) MapResourceURI(uri string, declaration *Declaration) {
+	d.uris[uri] = declaration
+}
+
 func (d *Document) AddResourceDeclaration(resourceType string, resourceDeclaration Resource) {
 	decl := NewDeclaration()
 	decl.Type = TypeName(resourceType)
 	decl.Attributes = resourceDeclaration
+	decl.SetDocument(d)
 	d.ResourceDecls = append(d.ResourceDecls, *decl)
+	d.MapResourceURI(decl.Attributes.URI(), decl)
 }
 
 func (d *Document) AddResource(uri string) error {
@@ -129,8 +171,9 @@ func (d *Document) AddResource(uri string) error {
 	if e := decl.SetURI(uri); e != nil {
 		return e
 	}
-	
+	decl.SetDocument(d)
 	d.ResourceDecls = append(d.ResourceDecls, *decl)
+	d.MapResourceURI(decl.Attributes.URI(), decl)
 	return nil
 }
 

internal/resource/document_test.go

@@ -18,7 +18,7 @@ import (
 
 func TestNewDocumentLoader(t *testing.T) {
 	d := NewDocument()
-	assert.NotEqual(t, nil, d)
+	assert.NotNil(t, d)
 }
 
 func TestDocumentLoader(t *testing.T) {
@@ -109,7 +109,7 @@ resources:
 
 	var documentYaml strings.Builder
 	d := NewDocument()
-	assert.NotEqual(t, nil, d)
+	assert.NotNil(t, d)
 
 	f, e := ResourceTypes.New("file://")
 	assert.Nil(t, e)
@@ -120,7 +120,7 @@ resources:
 	assert.Nil(t, readErr)
 	d.AddResourceDeclaration("file", f)
 	ey := d.Generate(&documentYaml)
-	assert.Equal(t, nil, ey)
+	assert.Nil(t, ey)
 
 	assert.Greater(t, documentYaml.Len(), 0)
 	assert.YAMLEq(t, expected, documentYaml.String())

internal/resource/file.go

@@ -20,6 +20,8 @@ import (
 	"crypto/sha256"
 	"gitea.rosskeen.house/rosskeen.house/machine"
 	"decl/internal/codec"
+	"decl/internal/iofilter"
+	"strings"
 )
 
 type FileType string
@@ -41,7 +43,7 @@ var ErrInvalidFileOwner error = errors.New("Unknown User")
 var ErrInvalidFileGroup error = errors.New("Unknown Group")
 
 func init() {
-	ResourceTypes.Register("file", func(u *url.URL) Resource {
+	ResourceTypes.Register([]string{"file"}, func(u *url.URL) Resource {
 		f := NewFile()
 		f.Path = filepath.Join(u.Hostname(), u.Path)
 		return f
@@ -62,11 +64,14 @@ type File struct {
 	Mtime time.Time `json:"mtime,omitempty" yaml:"mtime,omitempty"`
 
 	Content  string   `json:"content,omitempty" yaml:"content,omitempty"`
+	ContentSourceRef  ResourceReference   `json:"sourceref,omitempty" yaml:"sourceref,omitempty"`
 	Sha256   string   `json:"sha256,omitempty" yaml:"sha256,omitempty"`
 	Size     int64    `json:"size,omitempty" yaml:"size,omitempty"`
 	Target   string   `json:"target,omitempty" yaml:"target,omitempty"`
 	FileType FileType `json:"filetype" yaml:"filetype"`
 	State    string   `json:"state,omitempty" yaml:"state,omitempty"`
+	SerializeContent bool `json:"serializecontent,omitempty" yaml:"serializecontent,omitempty"`
+	config ConfigurationValueGetter
 }
 
 type ResourceFileInfo struct {
@@ -76,7 +81,7 @@ type ResourceFileInfo struct {
 func NewFile() *File {
 	currentUser, _ := user.Current()
 	group, _ := user.LookupGroupId(currentUser.Gid)
-	f := &File{ normalizePath: false, Owner: currentUser.Username, Group: group.Name, Mode: "0644", FileType: RegularFile}
+	f := &File{ normalizePath: false, Owner: currentUser.Username, Group: group.Name, Mode: "0644", FileType: RegularFile, SerializeContent: false }
 	slog.Info("NewFile()", "file", f)
 	return f
 }
@@ -178,6 +183,10 @@ func (f *File) SetURI(uri string) error {
 	return e
 }
 
+func (f *File) UseConfig(config ConfigurationValueGetter) {
+	f.config = config
+}
+
 func (f *File) Validate() error {
 	return fmt.Errorf("failed")
 }
@@ -211,6 +220,11 @@ func (f *File) ResolveId(ctx context.Context) string {
 }
 
 func (f *File) NormalizePath() error {
+	if f.config != nil {
+		if prefixPath, configErr := f.config.GetValue("prefix"); configErr == nil {
+			f.Path = filepath.Join(prefixPath.(string), f.Path)
+		}
+	}
 	if f.normalizePath {
 		filePath, fileAbsErr := filepath.Abs(f.Path)
 		if fileAbsErr == nil {
@@ -257,6 +271,7 @@ func (f *ResourceFileInfo) Sys() any {
 }
 
 func (f *File) Create(ctx context.Context) error {
+	slog.Info("File.Create()", "file", f)
 	uid, uidErr := LookupUID(f.Owner)
 	if uidErr != nil {
 		return fmt.Errorf("%w: unkwnon user %d", ErrInvalidFileOwner, uid)
@@ -284,6 +299,27 @@ func (f *File) Create(ctx context.Context) error {
 	default:
 		fallthrough
 	case RegularFile:
+		copyBuffer := make([]byte, 32 * 1024)
+
+		hash := sha256.New()
+		f.Size = 0
+		var contentReader io.ReadCloser
+		if len(f.Content) == 0  && len(f.ContentSourceRef) != 0 {
+			if refReader, err := f.ContentSourceRef.ContentReaderStream(); err == nil {
+				contentReader = refReader
+			} else {
+				return err
+			}
+		} else {
+			contentReader = io.NopCloser(strings.NewReader(f.Content))
+		}
+
+		sumReadData := iofilter.NewReader(contentReader, func(p []byte, readn int, readerr error) (n int, err error) {
+			hash.Write(p[:readn])
+			f.Size += int64(readn)
+			return readn, readerr
+		})
+
 		createdFile, e := os.Create(f.Path)
 		if e != nil {
 			return e
@@ -292,16 +328,25 @@ func (f *File) Create(ctx context.Context) error {
 		if chmodErr := createdFile.Chmod(os.FileMode(mode)); chmodErr != nil {
 			return chmodErr
 		}
+		_, writeErr := io.CopyBuffer(createdFile, sumReadData, copyBuffer)
+		if writeErr != nil {
+			return fmt.Errorf("File.Create(): CopyBuffer failed %v %v: %w", createdFile, contentReader, writeErr)
+		}
+/*
 		_, writeErr := createdFile.Write([]byte(f.Content))
 		if writeErr != nil {
 			return writeErr
 		}
+*/
+
+		f.Sha256 = fmt.Sprintf("%x", hash.Sum(nil))
 		if !f.Mtime.IsZero() && !f.Atime.IsZero() {
 			if chtimesErr := os.Chtimes(f.Path, f.Atime, f.Mtime); chtimesErr != nil {
 				return chtimesErr
 			}
 		}
 	}
+
 	if chownErr := os.Chown(f.Path, uid, gid); chownErr != nil {
 		return chownErr
 	}
@@ -372,6 +417,7 @@ func (f *File) Read(ctx context.Context) ([]byte, error) {
 
 	switch f.FileType {
 	case RegularFile:
+		if len(f.ContentSourceRef) == 0 || f.SerializeContent {
 			file, fileErr := os.Open(f.Path)
 			if fileErr != nil {
 				panic(fileErr)
@@ -383,6 +429,7 @@ func (f *File) Read(ctx context.Context) ([]byte, error) {
 			}
 			f.Content = string(fileContent)
 			f.Sha256 = fmt.Sprintf("%x", sha256.Sum256(fileContent))
+		}
 	case SymbolicLinkFile:
 		linkTarget, pathErr := os.Readlink(f.Path)
 		if pathErr != nil {

internal/resource/file_test.go

@@ -397,3 +397,54 @@ func TestFileDelete(t *testing.T) {
 	assert.Nil(t, stater.Trigger("delete"))
 	assert.NoFileExists(t, file, nil)
 }
+
+func TestFileContentRef(t *testing.T) {
+	file, _ := filepath.Abs(filepath.Join(TempDir, "src.txt"))
+	copyFile, _ := filepath.Abs(filepath.Join(TempDir, "copy.txt"))
+	
+	decl := fmt.Sprintf(`
+  path: "%s"
+  owner: "%s"
+  group: "%s"
+  mode: "0600"
+  content: |-
+    test line 1
+    test line 2
+  state: present
+`, file, ProcessTestUserName, ProcessTestGroupName)
+
+	contentRef := fmt.Sprintf(`
+  path: "%s"
+  owner: "%s"
+  group: "%s"
+  mode: "0600"
+  sourceref: "file://%s"
+  state: present
+`, file, ProcessTestUserName, ProcessTestGroupName, copyFile)
+
+	f := NewFile()
+	stater := f.StateMachine()
+	e := f.LoadDecl(decl)
+	assert.Nil(t, e)
+	assert.Equal(t, ProcessTestUserName, f.Owner)
+
+	assert.Nil(t, stater.Trigger("create"))
+	assert.FileExists(t, file, nil)
+	s, e := os.Stat(file)
+	assert.Nil(t, e)
+
+	assert.Greater(t, s.Size(), int64(0))
+
+	fr := NewFile()
+	loadErr := fr.LoadDecl(contentRef)
+	assert.Nil(t, loadErr)
+	assert.Equal(t, ProcessTestUserName, fr.Owner)
+
+	assert.Nil(t, fr.StateMachine().Trigger("create"))
+	assert.FileExists(t, file, nil)
+	_, statErr := os.Stat(file)
+	assert.Nil(t, statErr)
+	
+	assert.Nil(t, stater.Trigger("delete"))
+	assert.NoFileExists(t, file, nil)
+}

internal/resource/http.go

@@ -19,8 +19,7 @@ _	"os"
 )
 
 func init() {
-	ResourceTypes.Register("http", HTTPFactory)
+	ResourceTypes.Register([]string{"http", "https"}, HTTPFactory)
-	ResourceTypes.Register("https", HTTPFactory)
 }
 
 func HTTPFactory(u *url.URL) Resource {
@@ -41,7 +40,10 @@ type HTTP struct {
 	Endpoint string `yaml:"endpoint" json:"endpoint"`
 	Headers []HTTPHeader `yaml:"headers,omitempty" json:"headers,omitempty"`
 	Body  string `yaml:"body,omitempty" json:"body,omitempty"`
+	Status string `yaml:"status,omitempty" json:"status,omitempty"`
+	StatusCode int `yaml:"statuscode,omitempty" json:"statuscode,omitempty"`
 	State string `yaml:"state,omitempty" json:"state,omitempty"`
+	config ConfigurationValueGetter
 }
 
 func NewHTTP() *HTTP {
@@ -67,9 +69,22 @@ func (h *HTTP) StateMachine() machine.Stater {
 
 func (h *HTTP) Notify(m *machine.EventMessage) {
   ctx := context.Background()
+	slog.Info("Notify()", "http", h, "m", m)
   switch m.On {
   case machine.ENTERSTATEEVENT:
     switch m.Dest {
+		case "start_read":
+			if _,readErr := h.Read(ctx); readErr == nil {
+				if triggerErr := h.StateMachine().Trigger("state_read"); triggerErr == nil {
+					return
+				} else {
+					h.State = "absent"
+					panic(triggerErr)
+				}
+			} else {
+				h.State = "absent"
+				panic(readErr)
+			}
     case "start_create":
       if e := h.Create(ctx); e == nil {
         if triggerErr := h.stater.Trigger("created"); triggerErr == nil {
@@ -77,7 +92,21 @@ func (h *HTTP) Notify(m *machine.EventMessage) {
 				}
       }
 			h.State = "absent"
-    case "present":
+		case "start_delete":
+			if deleteErr := h.Delete(ctx); deleteErr == nil {
+				if triggerErr := h.StateMachine().Trigger("deleted"); triggerErr == nil {
+					return
+				} else {
+					h.State = "present"
+					panic(triggerErr)
+				}
+			} else {
+				h.State = "present"
+				panic(deleteErr)
+			}
+		case "absent":
+			h.State = "absent"
+    case "present", "created", "read":
       h.State = "present"
     }
   case machine.EXITSTATEEVENT:
@@ -96,6 +125,10 @@ func (h *HTTP) SetURI(uri string) error {
 	return nil
 }
 
+func (h *HTTP) UseConfig(config ConfigurationValueGetter) {
+	h.config = config
+}
+
 func (h *HTTP) JSON() ([]byte, error) {
 	return json.Marshal(h)
 }
@@ -140,10 +173,18 @@ func (h *HTTP) Create(ctx context.Context) error {
 	if reqErr != nil {
 		return reqErr
 	}
+
+	if tokenErr := h.ReadAuthorizationTokenFromConfig(req); tokenErr != nil {
+		slog.Error("ReadAuthorizationTokenFromConfig()", "error", tokenErr)
+	}
+
 	for _,header := range h.Headers {
 		req.Header.Add(header.Name, header.Value)
 	}
+
 	resp, err := h.client.Do(req)
+	h.Status = resp.Status
+	h.StatusCode = resp.StatusCode
 	if err != nil {
 		return err
 	}
@@ -151,6 +192,18 @@ func (h *HTTP) Create(ctx context.Context) error {
 	return err
 }
 
+func (h *HTTP) ReadAuthorizationTokenFromConfig(req *http.Request) error {
+	if h.config != nil {
+		token, tokenErr := h.config.GetValue("authorization_token")
+		if tokenErr == nil {
+			req.Header.Add("Authorization", fmt.Sprintf("Bearer %s", token))
+		}
+		slog.Info("ReadAuthorizationTokenFromConfig()", "error", tokenErr)
+		return tokenErr
+	}
+	return nil
+}
+
 func (h *HTTP) Read(ctx context.Context) ([]byte, error) {
 	req, reqErr := http.NewRequestWithContext(ctx, "GET", h.Endpoint, nil)
 	if reqErr != nil {
@@ -158,6 +211,11 @@ func (h *HTTP) Read(ctx context.Context) ([]byte, error) {
 	}
 	slog.Info("HTTP.Read() ", "request", req, "err", reqErr)
 
+	tokenErr := h.ReadAuthorizationTokenFromConfig(req)
+	if tokenErr != nil {
+		slog.Error("ReadAuthorizationTokenFromConfig()", "error", tokenErr)
+	}
+
 	if len(h.Headers) > 0 {
  	  for _,header := range h.Headers {
   		req.Header.Add(header.Name, header.Value)
@@ -165,6 +223,9 @@ func (h *HTTP) Read(ctx context.Context) ([]byte, error) {
   }
 
 	resp, err := h.client.Do(req)
+	slog.Info("Http.Read()", "response", resp, "error", err)
+	h.Status = resp.Status
+	h.StatusCode = resp.StatusCode
 	if err != nil {
 		return nil, err
 	}
@@ -177,6 +238,10 @@ func (h *HTTP) Read(ctx context.Context) ([]byte, error) {
 	return yaml.Marshal(h)
 }
 
+func (h *HTTP) Delete(ctx context.Context) error {
+	return nil
+}
+
 func (h *HTTP) Type() string {
 	return "http"
 }

internal/resource/iptables.go

@@ -18,10 +18,11 @@ _	"os/exec"
 	"log/slog"
 	"gitea.rosskeen.house/rosskeen.house/machine"
 	"decl/internal/codec"
+	"decl/internal/command"
 )
 
 func init() {
-	ResourceTypes.Register("iptable", func(u *url.URL) Resource {
+	ResourceTypes.Register([]string{"iptable"}, func(u *url.URL) Resource {
 		i := NewIptable()
 		i.Table = IptableName(u.Hostname())
 		if len(u.Path) > 0 {
@@ -122,10 +123,12 @@ type Iptable struct {
 	ChainLength		uint						`json:"-" yaml:"-"`
 
 	ResourceType	IptableType `json:"resourcetype,omitempty" yaml:"resourcetype,omitempty"`
-  CreateCommand *Command `yaml:"-" json:"-"`
+  CreateCommand *command.Command `yaml:"-" json:"-"`
-  ReadCommand   *Command `yaml:"-" json:"-"`
+  ReadCommand   *command.Command `yaml:"-" json:"-"`
-  UpdateCommand *Command `yaml:"-" json:"-"`
+  UpdateCommand *command.Command `yaml:"-" json:"-"`
-  DeleteCommand *Command `yaml:"-" json:"-"`
+  DeleteCommand *command.Command `yaml:"-" json:"-"`
+
+	config ConfigurationValueGetter
 }
 
 func NewIptable() *Iptable {
@@ -203,6 +206,10 @@ func (i *Iptable) SetURI(uri string) error {
 	return e
 }
 
+func (i *Iptable) UseConfig(config ConfigurationValueGetter) {
+	i.config = config
+}
+
 func (i *Iptable) Validate() error {
 	s := NewSchema(i.Type())
 	jsonDoc, jsonErr := i.JSON()
@@ -233,7 +240,7 @@ func (i *Iptable) UnmarshalYAML(value *yaml.Node) error {
 	return nil
 }
 
-func (i *Iptable) NewCRUD() (create *Command, read *Command, update *Command, del *Command) {
+func (i *Iptable) NewCRUD() (create *command.Command, read *command.Command, update *command.Command, del *command.Command) {
 	return NewIptableCreateCommand(), NewIptableReadCommand(), NewIptableUpdateCommand(), NewIptableDeleteCommand()
 }
 
@@ -403,11 +410,11 @@ func (i *Iptable) MatchRule(flags []string) (match bool) {
 }
 
 func (i *Iptable) ReadChainLength() error {
-	c := NewCommand()
+	c := command.NewCommand()
 	c.Path = "iptables"
-	c.Args = []CommandArg{
+	c.Args = []command.CommandArg{
-		CommandArg("-S"),
+		command.CommandArg("-S"),
-		CommandArg("{{ .Chain }}"),
+		command.CommandArg("{{ .Chain }}"),
 	}
 	output,err := c.Execute(i)
 	if err == nil {
@@ -452,7 +459,7 @@ func (i *Iptable) Read(ctx context.Context) ([]byte, error) {
 
 func (i *Iptable) Type() string { return "iptable" }
 
-func (i *IptableType) NewCRUD() (create *Command, read *Command, update *Command, del *Command) {
+func (i *IptableType) NewCRUD() (create *command.Command, read *command.Command, update *command.Command, del *command.Command) {
 	switch *i {
 	case IptableTypeRule:
 		return NewIptableCreateCommand(), NewIptableReadCommand(), NewIptableUpdateCommand(), NewIptableDeleteCommand()
@@ -489,24 +496,24 @@ func (i *IptableType) UnmarshalYAML(value *yaml.Node) error {
 	return i.UnmarshalValue(s)
 }
 
-func NewIptableCreateCommand() *Command {
+func NewIptableCreateCommand() *command.Command {
-	c := NewCommand()
+	c := command.NewCommand()
 	c.Path = "iptables"
-	c.Args = []CommandArg{
+	c.Args = []command.CommandArg{
-		CommandArg("-t"),
+		command.CommandArg("-t"),
-		CommandArg("{{ .Table }}"),
+		command.CommandArg("{{ .Table }}"),
-		CommandArg("{{ if le .Id .ChainLength }}-R{{ else }}-A{{ end }}"),
+		command.CommandArg("{{ if le .Id .ChainLength }}-R{{ else }}-A{{ end }}"),
-		CommandArg("{{ .Chain }}"),
+		command.CommandArg("{{ .Chain }}"),
-		CommandArg("{{ if le .Id .ChainLength }}{{ .Id }}{{ end }}"),
+		command.CommandArg("{{ if le .Id .ChainLength }}{{ .Id }}{{ end }}"),
-		CommandArg("{{ if .In }}-i {{ .In }}{{ else if .Out }}-o {{ .Out }}{{ end }}"),
+		command.CommandArg("{{ if .In }}-i {{ .In }}{{ else if .Out }}-o {{ .Out }}{{ end }}"),
-		CommandArg("{{ range .Match }}-m {{ . }} {{- end }}"),
+		command.CommandArg("{{ range .Match }}-m {{ . }} {{- end }}"),
-		CommandArg("{{ if .Source }}-s {{ .Source }}{{ end }}"),
+		command.CommandArg("{{ if .Source }}-s {{ .Source }}{{ end }}"),
-		CommandArg("{{ if .Sport }}--sport {{ .Sport }}{{ end }}"),
+		command.CommandArg("{{ if .Sport }}--sport {{ .Sport }}{{ end }}"),
-		CommandArg("{{ if .Destination }}-d {{ .Destination }}{{ end }}"),
+		command.CommandArg("{{ if .Destination }}-d {{ .Destination }}{{ end }}"),
-		CommandArg("{{ if .Dport }}--dport {{ .Dport }}{{ end }}"),
+		command.CommandArg("{{ if .Dport }}--dport {{ .Dport }}{{ end }}"),
-		CommandArg("{{ if .Proto }}-p {{ .Proto }}{{ end }}"),
+		command.CommandArg("{{ if .Proto }}-p {{ .Proto }}{{ end }}"),
-		CommandArg("{{ range .Flags }} --{{ .Name }} {{ .Value }} {{ end }}"),
+		command.CommandArg("{{ range .Flags }} --{{ .Name }} {{ .Value }} {{ end }}"),
-		CommandArg("{{ if .Jump }}-j {{ .Jump }}{{ end }}"),
+		command.CommandArg("{{ if .Jump }}-j {{ .Jump }}{{ end }}"),
 	}
 	return c
 }
@@ -539,15 +546,15 @@ func IptableExtractRule(lineNumber uint, ruleLine string, target *Iptable) (stat
 }
 
 
-func NewIptableReadCommand() *Command {
+func NewIptableReadCommand() *command.Command {
-	c := NewCommand()
+	c := command.NewCommand()
 	c.Path = "iptables"
-	c.Args = []CommandArg{
+	c.Args = []command.CommandArg{
-		CommandArg("-t"),
+		command.CommandArg("-t"),
-		CommandArg("{{ .Table }}"),
+		command.CommandArg("{{ .Table }}"),
-		CommandArg("-S"),
+		command.CommandArg("-S"),
-		CommandArg("{{ .Chain }}"),
+		command.CommandArg("{{ .Chain }}"),
-		CommandArg("{{ if .Id }}{{ .Id }}{{ end }}"),
+		command.CommandArg("{{ if .Id }}{{ .Id }}{{ end }}"),
 	}
 	c.Extractor = func(out []byte, target any) error {
 		i := target.(*Iptable)
@@ -581,14 +588,14 @@ func NewIptableReadCommand() *Command {
 	return c
 }
 
-func NewIptableReadChainCommand() *Command {
+func NewIptableReadChainCommand() *command.Command {
-	c := NewCommand()
+	c := command.NewCommand()
 	c.Path = "iptables"
-	c.Args = []CommandArg{
+	c.Args = []command.CommandArg{
-		CommandArg("-t"),
+		command.CommandArg("-t"),
-		CommandArg("{{ .Table }}"),
+		command.CommandArg("{{ .Table }}"),
-		CommandArg("-S"),
+		command.CommandArg("-S"),
-		CommandArg("{{ .Chain }}"),
+		command.CommandArg("{{ .Chain }}"),
 	}
 	c.Extractor = func(out []byte, target any) error {
 		IptableChainRules := target.(*[]*Iptable)
@@ -620,22 +627,22 @@ func NewIptableReadChainCommand() *Command {
 	return c
 }
 
-func NewIptableUpdateCommand() *Command {
+func NewIptableUpdateCommand() *command.Command {
 	return NewIptableCreateCommand()
 }
 
-func NewIptableDeleteCommand() *Command {
+func NewIptableDeleteCommand() *command.Command {
 	return nil
 }
 
-func NewIptableChainCreateCommand() *Command {
+func NewIptableChainCreateCommand() *command.Command {
-	c := NewCommand()
+	c := command.NewCommand()
 	c.Path = "iptables"
-	c.Args = []CommandArg{
+	c.Args = []command.CommandArg{
-		CommandArg("-t"),
+		command.CommandArg("-t"),
-		CommandArg("{{ .Table }}"),
+		command.CommandArg("{{ .Table }}"),
-		CommandArg("-N"),
+		command.CommandArg("-N"),
-		CommandArg("{{ .Chain }}"),
+		command.CommandArg("{{ .Chain }}"),
 	}
 	c.Extractor = func(out []byte, target any) error {
 		slog.Info("IptableChain Extractor", "output", out, "command", c)
@@ -743,14 +750,14 @@ func RuleExtractorById(out []byte, target any) (err error) {
 	return
 }
 
-func NewIptableChainReadCommand() *Command {
+func NewIptableChainReadCommand() *command.Command {
-	c := NewCommand()
+	c := command.NewCommand()
 	c.Path = "iptables"
-	c.Args = []CommandArg{
+	c.Args = []command.CommandArg{
-		CommandArg("-t"),
+		command.CommandArg("-t"),
-		CommandArg("{{ .Table }}"),
+		command.CommandArg("{{ .Table }}"),
-		CommandArg("-S"),
+		command.CommandArg("-S"),
-		CommandArg("{{ .Chain }}"),
+		command.CommandArg("{{ .Chain }}"),
 	}
 	c.Extractor = func(out []byte, target any) error {
 		i := target.(*Iptable)
@@ -776,11 +783,11 @@ func NewIptableChainReadCommand() *Command {
 	return c
 }
 
-func NewIptableChainUpdateCommand() *Command {
+func NewIptableChainUpdateCommand() *command.Command {
 	return NewIptableChainCreateCommand()
 }
 
-func NewIptableChainDeleteCommand() *Command {
+func NewIptableChainDeleteCommand() *command.Command {
 	return nil
 }
 

internal/resource/iptables_test.go

@@ -19,6 +19,7 @@ _ "strings"
 _ "syscall"
 	"testing"
 _ "time"
+	"decl/internal/command"
 )
 
 func TestNewIptableResource(t *testing.T) {
@@ -65,7 +66,7 @@ func TestReadIptable(t *testing.T) {
 
 	e := testRule.LoadDecl(declarationAttributes)
 	assert.Nil(t, e)
-  testRule.ReadCommand = (*Command)(m)
+  testRule.ReadCommand = (*command.Command)(m)
 //	testRuleErr := testRule.Apply()
 //	assert.Nil(t, testRuleErr)
 	r, e := testRule.Read(ctx)

internal/resource/mock_command_test.go

@@ -8,9 +8,10 @@ _	"github.com/stretchr/testify/assert"
 _	"os"
 _	"strings"
 _	"testing"
+	"decl/internal/command"
 )
 
-type MockCommand Command
+type MockCommand command.Command
 
 func (m *MockCommand) Execute(value any) ([]byte, error) {
 	return nil, nil

internal/resource/network_route.go

@@ -19,7 +19,7 @@ _	"strconv"
 )
 
 func init() {
-	ResourceTypes.Register("route", func(u *url.URL) Resource {
+	ResourceTypes.Register([]string{"route"}, func(u *url.URL) Resource {
 		n := NewNetworkRoute()
 		return n
 	})
@@ -125,6 +125,7 @@ type NetworkRoute struct {
 	DeleteCommand *Command `yaml:"-" json:"-"`
 
 	State     string              `json:"state" yaml:"state"`
+	config ConfigurationValueGetter
 }
 
 func NewNetworkRoute() *NetworkRoute {
@@ -194,6 +195,10 @@ func (n *NetworkRoute) SetURI(uri string) error {
 	return nil
 }
 
+func (n *NetworkRoute) UseConfig(config ConfigurationValueGetter) {
+	n.config = config
+}
+
 func (n *NetworkRoute) Validate() error {
 	return fmt.Errorf("failed")
 }

internal/resource/package.go

@@ -17,6 +17,7 @@ import (
 	"strings"
 	"gitea.rosskeen.house/rosskeen.house/machine"
 	"decl/internal/codec"
+	"decl/internal/command"
 )
 
 type PackageType string
@@ -31,58 +32,44 @@ const (
 	PackageTypeYum PackageType = "yum"
 )
 
+var SystemPackageType PackageType = FindSystemPackageType()
+
 type Package struct {
 	stater			machine.Stater `yaml:"-" json:"-"`
+	Source			string      `yaml:"source,omitempty" json:"source,omitempty"`
 	Name        string      `yaml:"name" json:"name"`
 	Required    string      `json:"required,omitempty" yaml:"required,omitempty"`
 	Version     string      `yaml:"version,omitempty" json:"version,omitempty"`
 	PackageType PackageType `yaml:"type" json:"type"`
 
-	CreateCommand *Command `yaml:"-" json:"-"`
+	CreateCommand *command.Command `yaml:"-" json:"-"`
-	ReadCommand   *Command `yaml:"-" json:"-"`
+	ReadCommand   *command.Command `yaml:"-" json:"-"`
-	UpdateCommand *Command `yaml:"-" json:"-"`
+	UpdateCommand *command.Command `yaml:"-" json:"-"`
-	DeleteCommand *Command `yaml:"-" json:"-"`
+	DeleteCommand *command.Command `yaml:"-" json:"-"`
 	// state attributes
 	State string `yaml:"state,omitempty" json:"state,omitempty"`
+	config ConfigurationValueGetter
 }
 
 func init() {
-	ResourceTypes.Register("package", func(u *url.URL) Resource {
+	ResourceTypes.Register([]string{"package", string(PackageTypeApk), string(PackageTypeApt), string(PackageTypeDeb), string(PackageTypeDnf), string(PackageTypeRpm), string(PackageTypePip), string(PackageTypeYum)}, func(u *url.URL) Resource {
-		p := NewPackage()
-		return p
-	})
-	ResourceTypes.Register(string(PackageTypeApk), func(u *url.URL) Resource {
-		p := NewPackage()
-		return p
-	})
-	ResourceTypes.Register(string(PackageTypeApt), func(u *url.URL) Resource {
-		p := NewPackage()
-		return p
-	})
-	ResourceTypes.Register(string(PackageTypeDeb), func(u *url.URL) Resource {
-		p := NewPackage()
-		return p
-	})
-	ResourceTypes.Register(string(PackageTypeDnf), func(u *url.URL) Resource {
-		p := NewPackage()
-		return p
-	})
-	ResourceTypes.Register(string(PackageTypeRpm), func(u *url.URL) Resource {
-		p := NewPackage()
-		return p
-	})
-	ResourceTypes.Register(string(PackageTypePip), func(u *url.URL) Resource {
-		p := NewPackage()
-		return p
-	})
-	ResourceTypes.Register(string(PackageTypeYum), func(u *url.URL) Resource {
 		p := NewPackage()
 		return p
 	})
 }
 
+func FindSystemPackageType() PackageType {
+	for _, packageType := range []PackageType{PackageTypeApk, PackageTypeApt, PackageTypeDeb, PackageTypeDnf, PackageTypeRpm, PackageTypePip, PackageTypeYum} {
+		c := packageType.NewReadCommand()
+		if c.Exists() {
+			return packageType
+		}
+	}
+	return PackageTypeApk
+}
+
 func NewPackage() *Package {
-	return &Package{ PackageType: PackageTypeApk }
+	return &Package{ PackageType: SystemPackageType }
 }
 
 func (p *Package) Clone() Resource {
@@ -106,17 +93,44 @@ func (p *Package) StateMachine() machine.Stater {
 
 func (p *Package) Notify(m *machine.EventMessage) {
 	ctx := context.Background()
+	slog.Info("Notify()", "package", p, "m", m)
 	switch m.On {
 	case machine.ENTERSTATEEVENT:
 		switch m.Dest {
+		case "start_read":
+			if _,readErr := p.Read(ctx); readErr == nil {
+				if triggerErr := p.StateMachine().Trigger("state_read"); triggerErr == nil {
+					return
+				} else {
+					p.State = "absent"
+					panic(triggerErr)
+				}
+			} else {
+				p.State = "absent"
+				panic(readErr)
+			}
 		case "start_create":
 			if e := p.Create(ctx); e == nil {
-				if triggerErr := p.stater.Trigger("created"); triggerErr == nil {
+				if triggerErr := p.StateMachine().Trigger("created"); triggerErr == nil {
 					return
 				}
 			}
 			p.State = "absent"
-		case "present":
+		case "start_delete":
+			if deleteErr := p.Delete(ctx); deleteErr == nil {
+				if triggerErr := p.StateMachine().Trigger("deleted"); triggerErr == nil {
+					return
+				} else {
+					p.State = "present"
+					panic(triggerErr)
+				}
+			} else {
+				p.State = "present"
+				panic(deleteErr)
+			}
+		case "absent":
+			p.State = "absent"
+		case "present", "created", "read":
 			p.State = "present"
 		}
 	case machine.EXITSTATEEVENT:
@@ -147,6 +161,10 @@ func (p *Package) SetURI(uri string) error {
 	return e
 }
 
+func (p *Package) UseConfig(config ConfigurationValueGetter) {
+	p.config = config
+}
+
 func (p *Package) JSON() ([]byte, error) {
 	return json.Marshal(p)
 }
@@ -176,6 +194,16 @@ func (p *Package) Create(ctx context.Context) error {
 	return e
 }
 
+func (p *Package) Delete(ctx context.Context) error {
+	_, err := p.DeleteCommand.Execute(p)
+	if err != nil {
+		return err
+	}
+	_,e := p.Read(ctx)
+	return e
+}
+
+
 func (p *Package) Apply() error {
 	if p.Version == "latest" {
 		p.Version = ""
@@ -228,22 +256,69 @@ func (p *Package) UnmarshalYAML(value *yaml.Node) error {
 	return nil
 }
 
-func (p *PackageType) NewCRUD() (create *Command, read *Command, update *Command, del *Command) {
+func (p *PackageType) NewCRUD() (create *command.Command, read *command.Command, update *command.Command, del *command.Command) {
 	switch *p {
 	case PackageTypeApk:
 		return NewApkCreateCommand(), NewApkReadCommand(), NewApkUpdateCommand(), NewApkDeleteCommand()
 	case PackageTypeApt:
 		return NewAptCreateCommand(), NewAptReadCommand(), NewAptUpdateCommand(), NewAptDeleteCommand()
 	case PackageTypeDeb:
+		return NewDebCreateCommand(), NewDebReadCommand(), NewDebUpdateCommand(), NewDebDeleteCommand()
 	case PackageTypeDnf:
+		return NewDnfCreateCommand(), NewDnfReadCommand(), NewDnfUpdateCommand(), NewDnfDeleteCommand()
 	case PackageTypeRpm:
+		return NewRpmCreateCommand(), NewRpmReadCommand(), NewRpmUpdateCommand(), NewRpmDeleteCommand()
 	case PackageTypePip:
+		return NewPipCreateCommand(), NewPipReadCommand(), NewPipUpdateCommand(), NewPipDeleteCommand()
 	case PackageTypeYum:
+		return NewYumCreateCommand(), NewYumReadCommand(), NewYumUpdateCommand(), NewYumDeleteCommand()
 	default:
 	}
 	return nil, nil, nil, nil
 }
 
+func (p *PackageType) NewReadCommand() (read *command.Command) {
+	switch *p {
+	case PackageTypeApk:
+		return NewApkReadCommand()
+	case PackageTypeApt:
+		return NewAptReadCommand()
+	case PackageTypeDeb:
+		return NewDebReadCommand()
+	case PackageTypeDnf:
+		return NewDnfReadCommand()
+	case PackageTypeRpm:
+		return NewRpmReadCommand()
+	case PackageTypePip:
+		return NewPipReadCommand()
+	case PackageTypeYum:
+		return NewYumReadCommand()
+	default:
+	}
+	return nil
+}
+
+func (p *PackageType) NewReadPackagesCommand() (read *command.Command) {
+	switch *p {
+	case PackageTypeApk:
+		return NewApkReadPackagesCommand()
+	case PackageTypeApt:
+		return NewAptReadPackagesCommand()
+	case PackageTypeDeb:
+//		return NewDebReadPackagesCommand()
+	case PackageTypeDnf:
+//		return NewDnfReadPackagesCommand()
+	case PackageTypeRpm:
+//		return NewRpmReadPackagesCommand()
+	case PackageTypePip:
+//		return NewPipReadPackagesCommand()
+	case PackageTypeYum:
+//		return NewYumReadPackagesCommand()
+	default:
+	}
+	return nil
+}
+
 func (p *PackageType) UnmarshalValue(value string) error {
 	switch value {
 	case string(PackageTypeApk), string(PackageTypeApt), string(PackageTypeDeb), string(PackageTypeDnf), string(PackageTypeRpm), string(PackageTypePip), string(PackageTypeYum):
@@ -270,23 +345,23 @@ func (p *PackageType) UnmarshalYAML(value *yaml.Node) error {
 	return p.UnmarshalValue(s)
 }
 
-func NewApkCreateCommand() *Command {
+func NewApkCreateCommand() *command.Command {
-	c := NewCommand()
+	c := command.NewCommand()
 	c.Path = "apk"
-	c.Args = []CommandArg{
+	c.Args = []command.CommandArg{
-		CommandArg("add"),
+		command.CommandArg("add"),
-		CommandArg("{{ .Name }}{{ .Required }}"),
+		command.CommandArg("{{ .Name }}{{ .Required }}"),
 	}
 	return c
 }
 
-func NewApkReadCommand() *Command {
+func NewApkReadCommand() *command.Command {
-	c := NewCommand()
+	c := command.NewCommand()
 	c.Path = "apk"
-	c.Args = []CommandArg{
+	c.Args = []command.CommandArg{
-		CommandArg("info"),
+		command.CommandArg("info"),
-		CommandArg("-ev"),
+		command.CommandArg("-ev"),
-		CommandArg("{{ .Name }}"),
+		command.CommandArg("{{ .Name }}"),
 	}
 	c.Extractor = func(out []byte, target any) error {
 		p := target.(*Package)
@@ -303,44 +378,82 @@ func NewApkReadCommand() *Command {
 	return c
 }
 
-func NewApkUpdateCommand() *Command {
+func NewApkUpdateCommand() *command.Command {
-	c := NewCommand()
+	c := command.NewCommand()
 	c.Path = "apk"
-	c.Args = []CommandArg{
+	c.Args = []command.CommandArg{
-		CommandArg("del"),
+		command.CommandArg("add"),
-		CommandArg("{{ .Name }}"),
+		command.CommandArg("{{ .Name }}{{ .Required }}"),
 	}
 	return c
 }
 
-func NewApkDeleteCommand() *Command {
+func NewApkDeleteCommand() *command.Command {
-	c := NewCommand()
+	c := command.NewCommand()
 	c.Path = "apk"
-	c.Args = []CommandArg{
+	c.Args = []command.CommandArg{
-		CommandArg("del"),
+		command.CommandArg("del"),
-		CommandArg("{{ .Name }}"),
+		command.CommandArg("{{ .Name }}"),
 	}
 	return c
 }
 
-func NewAptCreateCommand() *Command {
+func NewApkReadPackagesCommand() *command.Command {
-	c := NewCommand()
+	c := command.NewCommand()
+	c.Path = "apk"
+	c.Args = []command.CommandArg{
+		command.CommandArg("list"),
+		command.CommandArg("--installed"),
+	}
+	c.Extractor = func(out []byte, target any) error {
+		Packages := target.(*[]*Package)
+		numberOfPackages := len(*Packages)
+
+		lines := strings.Split(strings.TrimSpace(string(out)), "\n")
+		numberOfLines := len(lines)
+		diff := (numberOfLines - 1) - numberOfPackages
+		if diff > 0 {
+			for i := 0; i < diff; i++ {
+				*Packages = append(*Packages, NewPackage())
+			}
+		}
+		for lineIndex, line := range lines {
+			p := (*Packages)[lineIndex]
+			installedPackage := strings.Fields(strings.TrimSpace(line))
+
+			packageFields := strings.Split(installedPackage[0], "-")
+			numberOfFields := len(packageFields)
+			if numberOfFields > 2 {
+				packageName := strings.Join(packageFields[:numberOfFields - 3], "-")
+				packageVersion := strings.Join(packageFields[numberOfFields - 2:numberOfFields - 1], "-")
+				p.Name = packageName
+				p.State = "present"
+				p.Version = packageVersion
+			}
+		}
+		return nil
+	}
+	return c
+}
+
+func NewAptCreateCommand() *command.Command {
+	c := command.NewCommand()
 	c.Path = "apt-get"
 	c.Split = false
-	c.Args = []CommandArg{
+	c.Args = []command.CommandArg{
-		CommandArg("satisfy"),
+		command.CommandArg("satisfy"),
-		CommandArg("-y"),
+		command.CommandArg("-y"),
-		CommandArg("{{ .Name }} ({{ if .Required }}{{ .Required }}{{ else }}>=0.0.0{{ end }})"),
+		command.CommandArg("{{ .Name }} ({{ if .Required }}{{ .Required }}{{ else }}>=0.0.0{{ end }})"),
 	}
 	return c
 }
 
-func NewAptReadCommand() *Command {
+func NewAptReadCommand() *command.Command {
-	c := NewCommand()
+	c := command.NewCommand()
 	c.Path = "dpkg"
-	c.Args = []CommandArg{
+	c.Args = []command.CommandArg{
-		CommandArg("-s"),
+		command.CommandArg("-s"),
-		CommandArg("{{ .Name }}"),
+		command.CommandArg("{{ .Name }}"),
 	}
 	c.Extractor = func(out []byte, target any) error {
 		p := target.(*Package)
@@ -379,22 +492,404 @@ func NewAptReadCommand() *Command {
 	return c
 }
 
-func NewAptUpdateCommand() *Command {
+func NewAptUpdateCommand() *command.Command {
-	c := NewCommand()
+	c := command.NewCommand()
-	c.Path = "apt"
+	c.Path = "apt-get"
-	c.Args = []CommandArg{
+	c.Split = false
-		CommandArg("install"),
+	c.Args = []command.CommandArg{
-		CommandArg("{{ .Name }}"),
+		command.CommandArg("satisfy"),
+		command.CommandArg("-y"),
+		command.CommandArg("{{ .Name }} ({{ if .Required }}{{ .Required }}{{ else }}>=0.0.0{{ end }})"),
 	}
 	return c
 }
 
-func NewAptDeleteCommand() *Command {
+func NewAptDeleteCommand() *command.Command {
-	c := NewCommand()
+	c := command.NewCommand()
 	c.Path = "apt"
-	c.Args = []CommandArg{
+	c.FailOnError = false
-		CommandArg("remove"),
+	c.Args = []command.CommandArg{
-		CommandArg("{{ .Name }}"),
+		command.CommandArg("remove"),
+		command.CommandArg("{{ .Name }}"),
+	}
+	return c
+}
+
+func NewAptReadPackagesCommand() *command.Command {
+	c := command.NewCommand()
+	c.Path = "apt"
+	c.FailOnError = false
+	c.Args = []command.CommandArg{
+		command.CommandArg("list"),
+		command.CommandArg("--installed"),
+	}
+	c.Env = []string{ "DEBIAN_FRONTEND=noninteractive" }
+	c.Extractor = func(out []byte, target any) error {
+		Packages := target.(*[]*Package)
+		numberOfPackages := len(*Packages)
+
+		lines := strings.Split(strings.TrimSpace(string(out)), "\n")
+		numberOfLines := len(lines)
+		diff := (numberOfLines - 1) - numberOfPackages
+		if diff > 0 {
+			for i := 0; i < diff; i++ {
+				*Packages = append(*Packages, NewPackage())
+			}
+		}
+		for lineIndex, line := range lines[1:] {
+			p := (*Packages)[lineIndex]
+			installedPackage := strings.Fields(strings.TrimSpace(line))
+
+			packageFields := strings.Split(installedPackage[0], "/")
+			packageName := packageFields[0]
+			packageVersion := installedPackage[1]
+			p.Name = packageName
+			p.State = "present"
+			p.Version = packageVersion
+		}
+		return nil
+	}
+	return c
+}
+
+func NewDebCreateCommand() *command.Command {
+	c := command.NewCommand()
+	c.Path = "dpkg"
+	c.Split = false
+	c.Args = []command.CommandArg{
+		command.CommandArg("-i"),
+		command.CommandArg("{{ .Source }}"),
+	}
+	return c
+}
+
+func NewDebReadCommand() *command.Command {
+	c := command.NewCommand()
+	c.Path = "dpkg"
+	c.Args = []command.CommandArg{
+		command.CommandArg("-s"),
+		command.CommandArg("{{ .Name }}"),
+	}
+	c.Extractor = func(out []byte, target any) error {
+		p := target.(*Package)
+		slog.Info("Extract()", "out", out)
+		pkginfo := strings.Split(string(out), "\n")
+		for _, infofield := range pkginfo {
+			if len(infofield) > 0 && infofield[0] != ' ' {
+				fieldKeyValue := strings.SplitN(infofield, ":", 2)
+				if len(fieldKeyValue) > 1 {
+					key := strings.TrimSpace(fieldKeyValue[0])
+					value := strings.TrimSpace(fieldKeyValue[1])
+					switch key {
+					case "Package":
+						if value != p.Name {
+							p.State = "absent"
+							return nil
+						}
+					case "Status":
+						statusFields := strings.SplitN(value, " ", 3)
+						if len(statusFields) > 1 {
+							if statusFields[2] == "installed" {
+								p.State = "present"
+							} else {
+								p.State = "absent"
+							}
+						}
+					case "Version":
+						p.Version = value
+					}
+				}
+			}
+		}
+		slog.Info("Extract()", "package", p)
+		return nil
+	}
+	return c
+}
+
+func NewDebUpdateCommand() *command.Command {
+	c := command.NewCommand()
+	c.Path = "dpkg"
+	c.Args = []command.CommandArg{
+		command.CommandArg("-i"),
+		command.CommandArg("{{ .Source }}"),
+	}
+	return c
+}
+
+func NewDebDeleteCommand() *command.Command {
+	c := command.NewCommand()
+	c.Path = "dpkg"
+	c.Args = []command.CommandArg{
+		command.CommandArg("-r"),
+		command.CommandArg("{{ .Name }}"),
+	}
+	return c
+}
+
+func NewDnfCreateCommand() *command.Command {
+	c := command.NewCommand()
+	c.Path = "dnf"
+	c.Split = false
+	c.Args = []command.CommandArg{
+		command.CommandArg("install"),
+		command.CommandArg("-q"),
+		command.CommandArg("-y"),
+		command.CommandArg("{{ .Name }}{{ if .Required }}{{ .Required }}{{ else }}>=0.0.0{{ end }}"),
+	}
+	return c
+}
+
+func NewDnfReadCommand() *command.Command {
+	c := command.NewCommand()
+	c.Path = "dnf"
+	c.Args = []command.CommandArg{
+		command.CommandArg("-q"),
+		command.CommandArg("list"),
+		command.CommandArg("installed"),
+		command.CommandArg("{{ .Name }}"),
+	}
+	c.Extractor = func(out []byte, target any) error {
+		p := target.(*Package)
+		slog.Info("Extract()", "out", out)
+		pkginfo := strings.Split(string(out), "\n")
+		for _, packageLines := range pkginfo {
+			fields := strings.Fields(packageLines)
+			packageNameField := strings.Split(fields[0], ".")
+			packageName := strings.TrimSpace(packageNameField[0])
+			//packageArch := strings.TrimSpace(packageNameField[1])
+			
+			if packageName == p.Name {
+				p.State = "present"
+				packageVersionField := strings.Split(fields[1], ":")
+				//packageEpoch := strings.TrimSpace(packageVersionField[0])
+				packageVersion := strings.TrimSpace(packageVersionField[1])
+				p.Version = packageVersion
+				return nil
+			}
+		}
+		p.State = "absent"
+		slog.Info("Extract()", "package", p)
+		return nil
+	}
+	return c
+}
+
+func NewDnfUpdateCommand() *command.Command {
+	c := command.NewCommand()
+	c.Path = "dnf"
+	c.Args = []command.CommandArg{
+		command.CommandArg("-q"),
+		command.CommandArg("-y"),
+		command.CommandArg("install"),
+		command.CommandArg("{{ .Name }}"),
+	}
+	return c
+}
+
+func NewDnfDeleteCommand() *command.Command {
+	c := command.NewCommand()
+	c.Path = "dnf"
+	c.Args = []command.CommandArg{
+		command.CommandArg("-q"),
+		command.CommandArg("-y"),
+		command.CommandArg("remove"),
+		command.CommandArg("{{ .Name }}"),
+	}
+	return c
+}
+
+
+func NewRpmCreateCommand() *command.Command {
+	c := command.NewCommand()
+	c.Path = "rpm"
+	c.Split = false
+	c.Args = []command.CommandArg{
+		command.CommandArg("-i"),
+		command.CommandArg("{{ .Name }}"),
+	}
+	return c
+}
+
+func NewRpmReadCommand() *command.Command {
+	c := command.NewCommand()
+	c.Path = "rpm"
+	c.Args = []command.CommandArg{
+		command.CommandArg("-q"),
+		command.CommandArg("{{ .Name }}"),
+	}
+	c.Extractor = func(out []byte, target any) error {
+		p := target.(*Package)
+		slog.Info("Extract()", "out", out)
+		pkginfo := strings.Split(string(out), "\n")
+		for _, packageLine := range pkginfo {
+			packageFields := strings.Split(packageLine, "-")
+			numberOfFields := len(packageFields)
+			if numberOfFields > 2 {
+				packageName := strings.Join(packageFields[:numberOfFields - 3], "-")
+				packageVersion := strings.Join(packageFields[numberOfFields - 2:numberOfFields - 1], "-")
+				if packageName == p.Name {
+					p.State = "present"
+					p.Version = packageVersion
+					return nil
+				}
+			}
+		}
+		p.State = "absent"
+		slog.Info("Extract()", "package", p)
+		return nil
+	}
+	return c
+}
+
+func NewRpmUpdateCommand() *command.Command {
+	c := command.NewCommand()
+	c.Path = "rpm"
+	c.Args = []command.CommandArg{
+		command.CommandArg("-i"),
+		command.CommandArg("{{ .Name }}"),
+	}
+	return c
+}
+
+func NewRpmDeleteCommand() *command.Command {
+	c := command.NewCommand()
+	c.Path = "rpm"
+	c.Args = []command.CommandArg{
+		command.CommandArg("-e"),
+		command.CommandArg("{{ .Name }}"),
+	}
+	return c
+}
+
+func NewPipCreateCommand() *command.Command {
+	c := command.NewCommand()
+	c.Path = "pip"
+	c.Split = false
+	c.Args = []command.CommandArg{
+		command.CommandArg("install"),
+		command.CommandArg("{{ .Name }}{{ if .Required }}{{ .Required }}{{ else }}>=0.0.0{{ end }}"),
+	}
+	return c
+}
+
+func NewPipReadCommand() *command.Command {
+	c := command.NewCommand()
+	c.Path = "pip"
+	c.Args = []command.CommandArg{
+		command.CommandArg("list"),
+	}
+	c.Extractor = func(out []byte, target any) error {
+		p := target.(*Package)
+		pkginfo := strings.Split(string(out), "\n")
+		for _, packageLine := range pkginfo[2:] {
+			packageFields := strings.Fields(packageLine)
+			numberOfFields := len(packageFields)
+			if numberOfFields == 2 {
+				packageName := packageFields[0]
+				packageVersion := packageFields[1]
+				if packageName == p.Name {
+					p.State = "present"
+					p.Version = packageVersion
+					return nil
+				}
+			}
+		}
+		p.State = "absent"
+		slog.Info("Extract()", "package", p)
+		return nil
+	}
+	return c
+}
+
+func NewPipUpdateCommand() *command.Command {
+	c := command.NewCommand()
+	c.Path = "pip"
+	c.Args = []command.CommandArg{
+		command.CommandArg("install"),
+		command.CommandArg("{{ .Name }}{{ if .Required }}{{ .Required }}{{ else }}>=0.0.0{{ end }}"),
+	}
+	return c
+}
+
+func NewPipDeleteCommand() *command.Command {
+	c := command.NewCommand()
+	c.Path = "pip"
+	c.Args = []command.CommandArg{
+		command.CommandArg("uninstall"),
+		command.CommandArg("{{ .Name }}"),
+	}
+	return c
+}
+
+func NewYumCreateCommand() *command.Command {
+	c := command.NewCommand()
+	c.Path = "yum"
+	c.Split = false
+	c.Args = []command.CommandArg{
+		command.CommandArg("install"),
+		command.CommandArg("-q"),
+		command.CommandArg("-y"),
+		command.CommandArg("{{ .Name }}{{ if .Required }}{{ .Required }}{{ else }}>=0.0.0{{ end }}"),
+	}
+	return c
+}
+
+func NewYumReadCommand() *command.Command {
+	c := command.NewCommand()
+	c.Path = "yum"
+	c.Args = []command.CommandArg{
+		command.CommandArg("-q"),
+		command.CommandArg("list"),
+		command.CommandArg("installed"),
+		command.CommandArg("{{ .Name }}"),
+	}
+	c.Extractor = func(out []byte, target any) error {
+		p := target.(*Package)
+		slog.Info("Extract()", "out", out)
+		pkginfo := strings.Split(string(out), "\n")
+		for _, packageLines := range pkginfo {
+			fields := strings.Fields(packageLines)
+			packageNameField := strings.Split(fields[0], ".")
+			packageName := strings.TrimSpace(packageNameField[0])
+			//packageArch := strings.TrimSpace(packageNameField[1])
+			
+			if packageName == p.Name {
+				p.State = "present"
+				packageVersionField := strings.Split(fields[1], ":")
+				//packageEpoch := strings.TrimSpace(packageVersionField[0])
+				packageVersion := strings.TrimSpace(packageVersionField[1])
+				p.Version = packageVersion
+				return nil
+			}
+		}
+		p.State = "absent"
+		slog.Info("Extract()", "package", p)
+		return nil
+	}
+	return c
+}
+
+func NewYumUpdateCommand() *command.Command {
+	c := command.NewCommand()
+	c.Path = "yum"
+	c.Args = []command.CommandArg{
+		command.CommandArg("-q"),
+		command.CommandArg("-y"),
+		command.CommandArg("install"),
+		command.CommandArg("{{ .Name }}"),
+	}
+	return c
+}
+
+func NewYumDeleteCommand() *command.Command {
+	c := command.NewCommand()
+	c.Path = "yum"
+	c.Args = []command.CommandArg{
+		command.CommandArg("-q"),
+		command.CommandArg("-y"),
+		command.CommandArg("remove"),
+		command.CommandArg("{{ .Name }}"),
 	}
 	return c
 }

internal/resource/package_test.go

@@ -16,6 +16,7 @@ import (
 	_ "os"
 	_ "strings"
 	"testing"
+	"decl/internal/command"
 )
 
 func TestNewPackageResource(t *testing.T) {
@@ -56,7 +57,7 @@ type: apk
 	assert.Nil(t, loadErr)
 	assert.Equal(t, "latest", p.Version)
 
-	p.ReadCommand = (*Command)(m)
+	p.ReadCommand = (*command.Command)(m)
 	yaml, readErr := p.Read(context.Background())
 	assert.Nil(t, readErr)
 	assert.Greater(t, len(yaml), 0)
@@ -106,3 +107,30 @@ func TestPackageSetURI(t *testing.T) {
 	assert.Equal(t, "package", p.Type())
 	assert.Equal(t, "12345_key", p.Name)
 }
+
+func TestReadDebPackage(t *testing.T) {
+	decl := `
+name: vim
+source: vim-8.2.3995-1ubuntu2.17.deb
+type: deb
+`
+	p := NewPackage()
+	assert.NotNil(t, p)
+	loadErr := p.LoadDecl(decl)
+	assert.Nil(t, loadErr)
+	p.ReadCommand = NewDebReadCommand()
+	p.ReadCommand.Executor = func(value any) ([]byte, error) {
+		return []byte(`
+Package: vim
+Version: 1.2.2
+`), nil
+	}
+	yaml, readErr := p.Read(context.Background())
+	assert.Nil(t, readErr)
+
+	slog.Info("Package.Read()", "package", p)
+	assert.Greater(t, len(yaml), 0)
+	slog.Info("read()", "yaml", yaml)
+	assert.Equal(t, "1.2.2", p.Version)
+	assert.Nil(t, p.Validate())
+}

internal/resource/resource.go

@@ -10,8 +10,11 @@ import (
 	_ "gopkg.in/yaml.v3"
 	_ "net/url"
 	"gitea.rosskeen.house/rosskeen.house/machine"
+	"decl/internal/transport"
 )
 
+type ResourceReference string
+
 type ResourceSelector func(r *Declaration) bool
 
 type Resource interface {
@@ -19,6 +22,7 @@ type Resource interface {
 	StateMachine() machine.Stater
 	URI() string
 	SetURI(string) error
+	UseConfig(config ConfigurationValueGetter)
 	ResolveId(context.Context) string
 	ResourceLoader
 	StateTransformer
@@ -27,6 +31,14 @@ type Resource interface {
 	Clone() Resource
 }
 
+type ContentReader interface {
+	ContentReaderStream() (*transport.Reader, error)
+}
+
+type ContentWriter interface {
+	ContentWriterStream() (*transport.Writer, error)
+}
+
 type ResourceValidator interface {
 	Validate() error
 }
@@ -65,6 +77,14 @@ func NewResource(uri string) Resource {
 	return nil
 }
 
+func (r ResourceReference) ContentReaderStream() (*transport.Reader, error) {
+	return transport.NewReaderURI(string(r))
+}
+
+func (r ResourceReference) ContentWriterStream() (*transport.Writer, error) {
+	return transport.NewWriterURI(string(r))
+}
+
 func StorageMachine(sub machine.Subscriber) machine.Stater {
 // start_destroy -> absent -> start_create -> present -> start_destroy
 	stater := machine.New("unknown")

internal/resource/resource_test.go

@@ -1,4 +1,5 @@
 // Copyright 2024 Matthew Rich <matthewrich.conf@gmail.com>. All rights reserved.
+
 package resource
 
 import (

internal/resource/schemas/file-declaration.jsonschema

@@ -10,6 +10,10 @@
       "description": "Resource type name.",
       "enum": [ "file" ]
     },
+    "config": {
+      "type": "string",
+      "description": "Config name"
+    },
     "attributes": {
       "$ref": "file.jsonschema"
     }

internal/resource/schemas/file.jsonschema

@@ -38,6 +38,10 @@
       "type": "string",
       "description": "file content"
     },
+    "sourceref": {
+      "type": "string",
+      "description": "file content source uri"
+    },
     "target": {
       "type": "string",
       "description": "Symbolic link target path"

internal/resource/schemas/http-declaration.jsonschema

@@ -10,6 +10,10 @@
       "description": "Resource type name.",
       "enum": [ "http" ]
     },
+    "config": {
+      "type": "string",
+      "description": "Config name."
+    },
     "attributes": {
       "$ref": "http.jsonschema"
     }

internal/resource/schemas/iptable-declaration.jsonschema

@@ -10,6 +10,10 @@
       "description": "Resource type name.",
       "enum": [ "iptable" ]
     },
+    "config": {
+      "type": "string",
+      "description": "Config name"
+    },
     "attributes": {
       "$ref": "iptable.jsonschema"
     }

internal/resource/service.go

@@ -0,0 +1,252 @@
+// Copyright 2024 Matthew Rich <matthewrich.conf@gmail.com>. All rights reserved.
+
+// Service resource
+package resource
+
+import (
+	"context"
+	"fmt"
+_	"log/slog"
+	"net/url"
+	"path/filepath"
+	"io"
+	"gopkg.in/yaml.v3"
+	"gitea.rosskeen.house/rosskeen.house/machine"
+	"decl/internal/codec"
+	"encoding/json"
+	"strings"
+)
+
+type ServiceManagerType string
+
+const (
+	ServiceManagerTypeSystemd ServiceManagerType = "systemd"
+	ServiceManagerTypeSysV ServiceManagerType = "sysv"
+)
+
+type Service struct {
+	stater	machine.Stater `yaml:"-" json:"-"`
+	Name	string	`json:"name" yaml:"name"`
+	ServiceManagerType ServiceManagerType `json:"servicemanager,omitempty" yaml:"servicemanager,omitempty"`
+
+	CreateCommand *Command `yaml:"-" json:"-"`
+	ReadCommand   *Command `yaml:"-" json:"-"`
+	UpdateCommand *Command `yaml:"-" json:"-"`
+	DeleteCommand *Command `yaml:"-" json:"-"`
+
+	State string `yaml:"state,omitempty" json:"state,omitempty"`
+	config ConfigurationValueGetter
+}
+
+func init() {
+	ResourceTypes.Register([]string{"service"}, func(u *url.URL) Resource {
+		s := NewService()
+		s.Name = filepath.Join(u.Hostname(), u.Path)
+		s.CreateCommand, s.ReadCommand, s.UpdateCommand, s.DeleteCommand = s.ServiceManagerType.NewCRUD()
+		return s
+	})
+}
+
+func NewService() *Service {
+	return &Service{ ServiceManagerType: ServiceManagerTypeSystemd }
+}
+
+func (s *Service) StateMachine() machine.Stater {
+	if s.stater == nil {
+		s.stater = ProcessMachine(s)
+	}
+	return s.stater
+}
+
+func (s *Service) Notify(m *machine.EventMessage) {
+	ctx := context.Background()
+	switch m.On {
+	case machine.ENTERSTATEEVENT:
+		switch m.Dest {
+		case "start_create":
+			if e := s.Create(ctx); e == nil {
+				if triggerErr := s.stater.Trigger("created"); triggerErr == nil {
+					return
+				}
+			}
+			s.State = "absent"
+		case "created":
+			s.State = "present"
+		case "running":
+			s.State = "running"
+		}
+	case machine.EXITSTATEEVENT:
+	}
+}
+
+func (s *Service) URI() string {
+	return fmt.Sprintf("service://%s", s.Name)
+}
+
+func (s *Service) SetURI(uri string) error {
+	resourceUri, e := url.Parse(uri)
+	if e == nil {
+		if resourceUri.Scheme == s.Type() {
+			s.Name = filepath.Join(resourceUri.Hostname(), resourceUri.RequestURI())
+		} else {
+			e = fmt.Errorf("%w: %s is not a %s", ErrInvalidResourceURI, uri, s.Type())
+		}
+	}
+	return e
+}
+
+func (s *Service) UseConfig(config ConfigurationValueGetter) {
+	s.config = config
+}
+
+func (s *Service) JSON() ([]byte, error) {
+	return json.Marshal(s)
+}
+
+func (s *Service) Validate() error {
+	return nil
+}
+
+func (s *Service) Clone() Resource {
+	news := &Service{
+		Name: s.Name,
+		ServiceManagerType: s.ServiceManagerType,
+	}
+	news.CreateCommand, news.ReadCommand, news.UpdateCommand, news.DeleteCommand = s.ServiceManagerType.NewCRUD()
+	return news
+}
+
+func (s *Service) Apply() error {
+	return nil
+}
+
+func (s *Service) Load(r io.Reader) error {
+	return codec.NewYAMLDecoder(r).Decode(s)
+}
+
+func (s *Service) LoadDecl(yamlResourceDeclaration string) error {
+	return codec.NewYAMLStringDecoder(yamlResourceDeclaration).Decode(s)
+}
+
+func (s *Service) UnmarshalJSON(data []byte) error {
+	if unmarshalErr := json.Unmarshal(data, s); unmarshalErr != nil {
+		return unmarshalErr
+	}
+	s.CreateCommand, s.ReadCommand, s.UpdateCommand, s.DeleteCommand = s.ServiceManagerType.NewCRUD()
+	return nil
+}
+
+func (s *Service) UnmarshalYAML(value *yaml.Node) error {
+	type decodeService Service
+	if unmarshalErr := value.Decode((*decodeService)(s)); unmarshalErr != nil {
+		return unmarshalErr
+	}
+	s.CreateCommand, s.ReadCommand, s.UpdateCommand, s.DeleteCommand = s.ServiceManagerType.NewCRUD()
+	return nil
+}
+
+func (s *ServiceManagerType) NewCRUD() (create *Command, read *Command, update *Command, del *Command) {
+	switch *s {
+	case ServiceManagerTypeSystemd:
+		return NewSystemdCreateCommand(), NewSystemdReadCommand(), NewSystemdUpdateCommand(), NewSystemdDeleteCommand()
+	case ServiceManagerTypeSysV:
+		return NewSysVCreateCommand(), NewSysVReadCommand(), NewSysVUpdateCommand(), NewSysVDeleteCommand()
+	default:
+	}
+	return nil, nil, nil, nil
+}
+
+
+func (s *Service) Create(ctx context.Context) error {
+	return nil
+}
+
+func (s *Service) Read(ctx context.Context) ([]byte, error) {
+	
+	return yaml.Marshal(s)
+}
+
+func (s *Service) Delete(ctx context.Context) error {
+	return nil
+}
+
+func (s *Service) Type() string { return "service" }
+
+func (s *Service) ResolveId(ctx context.Context) string {
+	return ""
+}
+
+func NewSystemdCreateCommand() *Command {
+	c := NewCommand()
+	c.Path = "systemctl"
+	c.Args = []CommandArg{
+		CommandArg("enable"),
+		CommandArg("{{ .Name }}"),
+	}
+	return c
+}
+
+func NewSystemdReadCommand() *Command {
+	c := NewCommand()
+	c.Path = "systemctl"
+	c.Args = []CommandArg{
+		CommandArg("show"),
+		CommandArg("{{ .Name }}"),
+	}
+	c.Extractor = func(out []byte, target any) error {
+		s := target.(*Service)
+		serviceStatus := strings.Split(string(out), "\n")
+		for _, statusLine := range(serviceStatus) {
+			if len(statusLine) > 1 {
+				statusKeyValue := strings.Split(statusLine, "=")
+				key := statusKeyValue[0]
+				value := strings.TrimSpace(strings.Join(statusKeyValue[1:], "="))
+				switch key {
+				case "Id":
+				case "ActiveState":
+					switch value {
+					case "active":
+						if stateCreatedErr := s.stater.Trigger("created"); stateCreatedErr != nil {
+							return stateCreatedErr
+						}
+					case "inactive":
+					}
+				case "SubState":
+					switch value {
+					case "running":
+						if stateRunningErr := s.stater.Trigger("running"); stateRunningErr != nil {
+							return stateRunningErr
+						}
+					case "dead":
+					}
+				}
+			}
+		}
+		return nil
+	}
+	return c
+}
+
+func NewSystemdUpdateCommand() *Command {
+	return nil
+}
+
+func NewSystemdDeleteCommand() *Command {
+	return nil
+}
+
+func NewSysVCreateCommand() *Command {
+	return nil
+}
+
+func NewSysVReadCommand() *Command {
+	return nil
+}
+
+func NewSysVUpdateCommand() *Command {
+	return nil
+}
+
+func NewSysVDeleteCommand() *Command {
+	return nil
+}

internal/resource/service_test.go

@@ -0,0 +1,36 @@
+// Copyright 2024 Matthew Rich <matthewrich.conf@gmail.com>. All rights reserved.
+
+package resource
+
+import (
+	"context"
+_	"decl/tests/mocks"
+_ "fmt"
+	"github.com/stretchr/testify/assert"
+	"testing"
+)
+
+func TestNewServiceResource(t *testing.T) {
+	c := NewService()
+	assert.NotNil(t, c)
+}
+
+func TestUriServiceResource(t *testing.T) {
+	c := NewService()
+	assert.Nil(t, c.SetURI("service://ssh"))
+	assert.Equal(t, "ssh", c.Name)
+}
+
+func TestReadServiceResource(t *testing.T) {
+	yamlResult := `
+  name: "ssh"
+  servicemanager: "systemd"
+  state: "present"
+`
+	c := NewService()
+	c.Name = "ssh"
+	c.State = "present"
+	yamlData, err := c.Read(context.Background())
+	assert.Nil(t, err)
+	assert.YAMLEq(t, yamlResult, string(yamlData))
+}

internal/resource/types.go

@@ -5,50 +5,18 @@ package resource
 import (
 	"errors"
 	"fmt"
-	"net/url"
+_	"net/url"
 	"strings"
+	"decl/internal/types"
 )
 
 var (
 	ErrUnknownResourceType        = errors.New("Unknown resource type")
-	ResourceTypes          *Types = NewTypes()
+	ResourceTypes          *types.Types[Resource] = types.New[Resource]()
 )
 
 type TypeName string //`json:"type"`
 
-type TypeFactory func(*url.URL) Resource
-
-type Types struct {
-	registry map[string]TypeFactory
-}
-
-func NewTypes() *Types {
-	return &Types{registry: make(map[string]TypeFactory)}
-}
-
-func (t *Types) Register(name string, factory TypeFactory) {
-	t.registry[name] = factory
-}
-
-func (t *Types) New(uri string) (Resource, error) {
-	u, e := url.Parse(uri)
-	if u == nil || e != nil {
-		return nil, fmt.Errorf("%w: %s - uri %s", ErrUnknownResourceType, e, uri)
-	}
-
-	if r, ok := t.registry[u.Scheme]; ok {
-		return r(u), nil
-	}
-	return nil, fmt.Errorf("%w: %s", ErrUnknownResourceType, u.Scheme)
-}
-
-func (t *Types) Has(typename string) bool {
-	if _, ok := t.registry[typename]; ok {
-		return true
-	}
-	return false
-}
-
 func (n *TypeName) UnmarshalJSON(b []byte) error {
 	ResourceTypeName := strings.Trim(string(b), "\"")
 	if ResourceTypes.Has(ResourceTypeName) {

internal/resource/types_test.go

@@ -1,64 +0,0 @@
-// Copyright 2024 Matthew Rich <matthewrich.conf@gmail.com>. All rights reserved.
-package resource
-
-import (
-	_ "context"
-	"encoding/json"
-	"github.com/stretchr/testify/assert"
-	"net/url"
-	"testing"
-)
-
-func TestNewResourceTypes(t *testing.T) {
-	resourceTypes := NewTypes()
-	assert.NotEqual(t, nil, resourceTypes)
-}
-
-func TestNewResourceTypesRegister(t *testing.T) {
-	m := NewFooResource()
-
-	resourceTypes := NewTypes()
-	assert.NotEqual(t, nil, resourceTypes)
-
-	resourceTypes.Register("foo", func(*url.URL) Resource { return m })
-
-	r, e := resourceTypes.New("foo://")
-	assert.Equal(t, nil, e)
-	assert.Equal(t, m, r)
-}
-
-func TestResourceTypesFromURI(t *testing.T) {
-	m := NewFooResource()
-
-	resourceTypes := NewTypes()
-	assert.NotEqual(t, nil, resourceTypes)
-
-	resourceTypes.Register("foo", func(*url.URL) Resource { return m })
-
-	r, e := resourceTypes.New("foo://bar")
-	assert.Equal(t, nil, e)
-	assert.Equal(t, m, r)
-
-}
-
-func TestResourceTypesHasType(t *testing.T) {
-	m := NewFooResource()
-
-	resourceTypes := NewTypes()
-	assert.NotNil(t, resourceTypes)
-
-	resourceTypes.Register("foo", func(*url.URL) Resource { return m })
-
-	assert.True(t, resourceTypes.Has("foo"))
-}
-
-func TestResourceTypeName(t *testing.T) {
-	type fooResourceName struct {
-		Name TypeName `json:"type"`
-	}
-	fooTypeName := &fooResourceName{}
-	jsonType := `{ "type": "file" }`
-	e := json.Unmarshal([]byte(jsonType), &fooTypeName)
-	assert.Nil(t, e)
-	assert.Equal(t, "file", string(fooTypeName.Name))
-}

internal/resource/user.go

@@ -45,6 +45,7 @@ type User struct {
 	UpdateCommand *Command `json:"-" yaml:"-"`
 	DeleteCommand *Command `json:"-" yaml:"-"`
 	State string           `json:"state,omitempty" yaml:"state,omitempty"`
+	config ConfigurationValueGetter
 }
 
 func NewUser() *User {
@@ -52,7 +53,7 @@ func NewUser() *User {
 }
 
 func init() {
-	ResourceTypes.Register("user", func(u *url.URL) Resource {
+	ResourceTypes.Register([]string{"user"}, func(u *url.URL) Resource {
 		user := NewUser()
 		user.Name = u.Hostname()
 		user.UID = LookupUIDString(u.Hostname())
@@ -126,6 +127,10 @@ func (u *User) URI() string {
 	return fmt.Sprintf("user://%s", u.Name)
 }
 
+func (u *User) UseConfig(config ConfigurationValueGetter) {
+	u.config = config
+}
+
 func (u *User) ResolveId(ctx context.Context) string {
 	return LookupUIDString(u.Name)
 }

internal/source/container.go

@@ -5,14 +5,14 @@ package source
 import (
 	"context"
 _	"encoding/json"
-_	"fmt"
+	"fmt"
 _	"gopkg.in/yaml.v3"
 	"net/url"
 _	"path/filepath"
 	"decl/internal/resource"
 _	"os"
 _	"io"
-	"github.com/docker/docker/api/types"
+	"github.com/docker/docker/api/types/container"
 	"github.com/docker/docker/client"
 	"log/slog"
 )
@@ -46,9 +46,10 @@ func init() {
 func (c *Container) Type() string { return "container" }
 
 func (c *Container) ExtractResources(filter ResourceSelector) ([]*resource.Document, error) {
+	var extractErr error
 	ctx := context.Background()
 	slog.Info("container source ExtractResources()", "container", c) 
-	containers, err := c.apiClient.ContainerList(ctx, types.ContainerListOptions{All: true})
+	containers, err := c.apiClient.ContainerList(ctx, container.ListOptions{All: true})
 	if err != nil {
 		return nil, err
 	}
@@ -56,9 +57,11 @@ func (c *Container) ExtractResources(filter ResourceSelector) ([]*resource.Docum
 	document := resource.NewDocument()
 	for _, container := range containers {
 		runningContainer := resource.NewContainer(nil)
-		runningContainer.Inspect(ctx, container.ID)
+		if inspectErr := runningContainer.Inspect(ctx, container.ID); inspectErr != nil {
+			extractErr = fmt.Errorf("%w: %w", extractErr, inspectErr)
+		}
 		document.AddResourceDeclaration("container", runningContainer)
 	}
 
-	return []*resource.Document{document}, nil
+	return []*resource.Document{document}, extractErr
 }

internal/source/types.go

@@ -5,83 +5,19 @@ package source
 import (
 	"errors"
 	"fmt"
-	"net/url"
+_	"net/url"
 	"strings"
-	"path/filepath"
+_	"path/filepath"
+	"decl/internal/types"
 )
 
 var (
 	ErrUnknownSourceType        = errors.New("Unknown source type")
-	SourceTypes          *Types = NewTypes()
+	SourceTypes                 *types.Types[DocSource] = types.New[DocSource]()
 )
 
 type TypeName string //`json:"type"`
 
-type TypeFactory func(*url.URL) DocSource
-
-type Types struct {
-	registry map[string]TypeFactory
-}
-
-func NewTypes() *Types {
-	return &Types{registry: make(map[string]TypeFactory)}
-}
-
-func (t *Types) Register(names []string, factory TypeFactory) {
-	for _,name := range names {
-		t.registry[name] = factory
-	}
-}
-
-func (t *Types) FromExtension(path string) (TypeFactory, error) {
-	elements := strings.Split(path, ".")
-	numberOfElements := len(elements)
-	if numberOfElements > 2 {
-		if src := t.Get(strings.Join(elements[numberOfElements - 2: numberOfElements - 1], ".")); src != nil {
-			return src, nil
-		}
-	}
-	if src := t.Get(elements[numberOfElements - 1]); src != nil {
-		return src, nil
-	}
-	return nil, fmt.Errorf("%w: %s", ErrUnknownSourceType, path)
-}
-
-func (t *Types) New(uri string) (DocSource, error) {
-	u, e := url.Parse(uri)
-	if u == nil || e != nil {
-		return nil, fmt.Errorf("%w: %s", ErrUnknownSourceType, e)
-	}
-
-	if u.Scheme == "" {
-		u.Scheme = "file"
-	}
-
-	path := filepath.Join(u.Hostname(), u.Path)
-	if d, lookupErr := t.FromExtension(path); d != nil {
-		return d(u), lookupErr
-	}
-
-	if r, ok := t.registry[u.Scheme]; ok {
-		return r(u), nil
-	}
-	return nil, fmt.Errorf("%w: %s", ErrUnknownSourceType, u.Scheme)
-}
-
-func (t *Types) Has(typename string) bool {
-	if _, ok := t.registry[typename]; ok {
-		return true
-	}
-	return false
-}
-
-func (t *Types) Get(typename string) TypeFactory {
-	if d, ok := t.registry[typename]; ok {
-		return d
-	}
-	return nil
-}
-
 func (n *TypeName) UnmarshalJSON(b []byte) error {
 	SourceTypeName := strings.Trim(string(b), "\"")
 	if SourceTypes.Has(SourceTypeName) {

internal/source/types_test.go

@@ -33,48 +33,6 @@ func NewFileDocSource() DocSource {
 	}
 }
 
-func TestNewSourceTypes(t *testing.T) {
-	sourceTypes := NewTypes()
-	assert.NotNil(t, sourceTypes)
-}
-
-func TestNewSourceTypesRegister(t *testing.T) {
-	m := NewFooDocSource()
-
-	sourceTypes := NewTypes()
-	assert.NotNil(t, sourceTypes)
-
-	sourceTypes.Register([]string{"foo"}, func(*url.URL) DocSource { return m })
-
-	r, e := sourceTypes.New("foo://")
-	assert.Nil(t, e)
-	assert.Equal(t, m, r)
-}
-
-func TestResourceTypesFromURI(t *testing.T) {
-	m := NewFooDocSource()
-
-	sourceTypes := NewTypes()
-	assert.NotNil(t, sourceTypes)
-
-	sourceTypes.Register([]string{"foo"}, func(*url.URL) DocSource { return m })
-
-	r, e := sourceTypes.New("foo://bar")
-	assert.Nil(t, e)
-	assert.Equal(t, m, r)
-}
-
-func TestResourceTypesHasType(t *testing.T) {
-	m := NewFooDocSource()
-
-	sourceTypes := NewTypes()
-	assert.NotNil(t, sourceTypes)
-
-	sourceTypes.Register([]string{"foo"}, func(*url.URL) DocSource { return m })
-
-	assert.True(t, sourceTypes.Has("foo"))
-}
-
 func TestDocSourceTypeName(t *testing.T) {
 	SourceTypes.Register([]string{"file"}, func(*url.URL) DocSource { return NewFileDocSource() })
 

internal/transport/file.go

@@ -37,7 +37,7 @@ func NewFile(u *url.URL) (f *File, err error) {
 		f.readHandle = os.Stdin
 		f.writeHandle = os.Stdout
 	} else {
-		if f.readHandle, err = os.Open(f.Path()); err != nil {
+		if f.readHandle, err = os.OpenFile(f.Path(), os.O_RDWR|os.O_CREATE, 0644); err != nil {
 			return
 		}
 		f.writeHandle = f.readHandle

internal/transport/http.go

@@ -49,6 +49,9 @@ func NewHTTP(u *url.URL, ctx context.Context) (h *HTTP, err error) {
 	h.extension()
 
 	h.postRequest, err = http.NewRequestWithContext(ctx, "POST", u.String(), h.buffer)
+	if err != nil {
+		return
+	}
 	h.getRequest, err = http.NewRequestWithContext(ctx, "GET", u.String(), nil)
 	return
 }
@@ -73,7 +76,7 @@ func (h *HTTP) Path() string {
 
 func (h *HTTP) Signature() (documentSignature string) {
 	if h.getResponse != nil {
-		documentSignature := h.getResponse.Header.Get("Signature")
+		documentSignature = h.getResponse.Header.Get("Signature")
 		if documentSignature == "" {
 			signatureResp, signatureErr := h.Client.Get(fmt.Sprintf("%s.sig", h.uri.String()))
 			if signatureErr == nil {
@@ -113,7 +116,7 @@ func (h *HTTP) Reader() io.ReadCloser {
 func (h *HTTP) Writer() io.WriteCloser {
 	var err error
 	if h.postResponse, err = h.Client.Do(h.postRequest); err != nil {
-		h.postResponse, err = h.Client.Do(h.postRequest)
+		panic(err)
 	}
 	return h.buffer
 }

internal/transport/transport.go

@@ -44,6 +44,14 @@ func NewReader(u *url.URL) (reader *Reader, e error) {
 	return
 }
 
+func NewReaderURI(uri string) (reader *Reader, e error) {
+	var u *url.URL
+	if u, e = url.Parse(uri); e == nil {
+		return NewReader(u)
+	}
+	return
+}
+
 type Writer struct {
 	uri *url.URL
 	handle Handler
@@ -65,6 +73,14 @@ func NewWriter(u *url.URL) (writer *Writer, e error) {
 	return writer, e
 }
 
+func NewWriterURI(uri string) (writer *Writer, e error) {
+	var u *url.URL
+	if u, e = url.Parse(uri); e == nil {
+		return NewWriter(u)
+	}
+	return
+}
+
 func (r *Reader) Read(b []byte) (int, error) {
 	return r.stream.Read(b)
 }