update deps

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

.github/dependabot.yml

@@ -0,0 +1,19 @@
+# To get started with Dependabot version updates, you'll need to specify which
+# package ecosystems to update and where the package manifests are located.
+# Please see the documentation for all configuration options:
+# https://help.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
+
+version: 2
+updates:
+
+  # Maintain dependencies for GitHub Actions
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "daily"
+
+  # Maintain dependencies for Golang
+  - package-ecosystem: "gomod"
+    directory: "/"
+    schedule:
+      interval: "daily"

.github/renovate.json

@@ -1,19 +0,0 @@
-{
-  "extends": [
-    "config:base"
-  ],
-  "packageRules": [
-    {
-      "matchUpdateTypes": ["minor", "patch", "pin", "digest"],
-      "automerge": true
-    },
-    {
-      "groupName": "all deps",
-      "separateMajorMinor": true,
-      "groupSlug": "all",
-      "packagePatterns": [
-        "*"
-      ]
-    }
-  ]
-}

.github/workflows/autoapprove.yml

@@ -0,0 +1,20 @@
+name: "autoapprove"
+
+on:
+  pull_request_target:
+    types: [assigned, opened, synchronize, reopened]
+
+permissions:
+  pull-requests: write
+  contents: write
+
+jobs:
+  autoapprove:
+    runs-on: ubuntu-latest
+    steps:
+      - name: approve
+        uses: hmarr/auto-approve-action@v3
+        if: github.actor == 'vtolstov' || github.actor == 'dependabot[bot]'
+        id: approve
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/automerge.yml

@@ -0,0 +1,21 @@
+name: "automerge"
+
+on:
+  pull_request_target:
+    types: [assigned, opened, synchronize, reopened]
+
+permissions:
+  pull-requests: write
+  contents: write
+
+jobs:
+  automerge:
+    runs-on: ubuntu-latest
+    if: github.actor == 'vtolstov'
+    steps:
+      - name: merge
+        id: merge
+        run: gh pr merge --auto --merge "$PR_URL"
+        env:
+          PR_URL: ${{github.event.pull_request.html_url}}
+          GITHUB_TOKEN: ${{secrets.TOKEN}}

.github/workflows/build.yml

@@ -3,19 +3,20 @@ on:
  push:
     branches:
     - master
+    - v3
 jobs:
   test:
     name: test
     runs-on: ubuntu-latest
     steps:
     - name: setup
-      uses: actions/setup-go@v2
+      uses: actions/setup-go@v3
       with:
-        go-version: 1.16
+        go-version: 1.17
     - name: checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
     - name: cache
-      uses: actions/cache@v2
+      uses: actions/cache@v3
       with:
         path: ~/go/pkg/mod
         key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
@@ -31,9 +32,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: lint
-        uses: golangci/golangci-lint-action@v2
+        uses: golangci/golangci-lint-action@v3.4.0
         continue-on-error: true
         with:
           # Required: the version of golangci-lint is required and must be specified without patch version: we always use the latest patch version.

.github/workflows/codeql-analysis.yml

@@ -0,0 +1,78 @@
+# For most projects, this workflow file will not need changing; you simply need
+# to commit it to your repository.
+#
+# You may wish to alter this file to override the set of languages analyzed,
+# or to provide custom queries or build logic.
+#
+# ******** NOTE ********
+# We have attempted to detect the languages in your repository. Please check
+# the `language` matrix defined below to confirm you have the correct set of
+# supported CodeQL languages.
+#
+name: "codeql"
+
+on:
+  workflow_run:
+    workflows: ["prbuild"]
+    types:
+      - completed
+  push:
+    branches: [ master, v3 ]
+  pull_request:
+    # The branches below must be a subset of the branches above
+    branches: [ master, v3 ]
+  schedule:
+    - cron: '34 1 * * 0'
+
+jobs:
+  analyze:
+    name: analyze
+    runs-on: ubuntu-latest
+    permissions:
+      actions: read
+      contents: read
+      security-events: write
+
+    strategy:
+      fail-fast: false
+      matrix:
+        language: [ 'go' ]
+        # CodeQL supports [ 'cpp', 'csharp', 'go', 'java', 'javascript', 'python' ]
+        # Learn more:
+        # https://docs.github.com/en/free-pro-team@latest/github/finding-security-vulnerabilities-and-errors-in-your-code/configuring-code-scanning#changing-the-languages-that-are-analyzed
+
+    steps:
+    - name: checkout
+      uses: actions/checkout@v3
+    - name: setup
+      uses: actions/setup-go@v3
+      with:
+        go-version: 1.17
+    # Initializes the CodeQL tools for scanning.
+    - name: init
+      uses: github/codeql-action/init@v2
+      with:
+        languages: ${{ matrix.language }}
+        # If you wish to specify custom queries, you can do so here or in a config file.
+        # By default, queries listed here will override any specified in a config file.
+        # Prefix the list here with "+" to use these queries and those in the config file.
+        # queries: ./path/to/local/query, your-org/your-repo/queries@main
+
+    # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
+    # If this step fails, then you should remove it and run the build manually (see below)
+    - name: autobuild
+      uses: github/codeql-action/autobuild@v2
+
+    # ℹ️ Command-line programs to run using the OS shell.
+    # 📚 https://git.io/JvXDl
+
+    # ✏️ If the Autobuild fails above, remove it and uncomment the following three lines
+    #    and modify them (or add more) to build your code if your project
+    #    uses a compiled language
+
+    #- run: |
+    #   make bootstrap
+    #   make release
+
+    - name: analyze
+      uses: github/codeql-action/analyze@v2

.github/workflows/dependabot-automerge.yml

@@ -0,0 +1,27 @@
+name: "dependabot-automerge"
+
+on:
+  pull_request_target:
+    types: [assigned, opened, synchronize, reopened]
+
+permissions:
+  pull-requests: write
+  contents: write
+
+jobs:
+  automerge:
+    runs-on: ubuntu-latest
+    if: github.actor == 'dependabot[bot]'
+    steps:
+      - name: metadata
+        id: metadata
+        uses: dependabot/fetch-metadata@v1.3.6
+        with:
+          github-token: "${{ secrets.TOKEN }}"
+      - name: merge
+        id: merge
+        if: ${{contains(steps.metadata.outputs.dependency-names, 'go.unistack.org')}}
+        run: gh pr merge --auto --merge "$PR_URL"
+        env:
+          PR_URL: ${{github.event.pull_request.html_url}}
+          GITHUB_TOKEN: ${{secrets.TOKEN}}

.github/workflows/pr.yml

@@ -3,19 +3,20 @@ on:
   pull_request:
     branches:
     - master
+    - v3
 jobs:
   test:
     name: test
     runs-on: ubuntu-latest
     steps:
     - name: setup
-      uses: actions/setup-go@v2
+      uses: actions/setup-go@v3
       with:
-        go-version: 1.16
+        go-version: 1.17
     - name: checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
     - name: cache
-      uses: actions/cache@v2
+      uses: actions/cache@v3
       with:
         path: ~/go/pkg/mod
         key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
@@ -31,9 +32,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: lint
-        uses: golangci/golangci-lint-action@v2
+        uses: golangci/golangci-lint-action@v3.4.0
         continue-on-error: true
         with:
           # Required: the version of golangci-lint is required and must be specified without patch version: we always use the latest patch version.

consul.go

@@ -4,15 +4,14 @@ import (
 	"context"
 	"fmt"
 
+	"dario.cat/mergo"
 	"github.com/hashicorp/consul/api"
-	"github.com/imdario/mergo"
+	"go.unistack.org/micro/v4/config"
-	"github.com/unistack-org/micro/v3/config"
+	"go.unistack.org/micro/v4/options"
-	rutil "github.com/unistack-org/micro/v3/util/reflect"
+	rutil "go.unistack.org/micro/v4/util/reflect"
 )
 
-var (
+var DefaultStructTag = "consul"
-	DefaultStructTag = "consul"
-)
 
 type consulConfig struct {
 	opts config.Options
@@ -24,12 +23,19 @@ func (c *consulConfig) Options() config.Options {
 	return c.opts
 }
 
-func (c *consulConfig) Init(opts ...config.Option) error {
+func (c *consulConfig) Init(opts ...options.Option) error {
+	var err error
 	for _, o := range opts {
-		o(&c.opts)
+		if err = o(&c.opts); err != nil {
+			return err
+		}
 	}
 
-	if c.opts.Codec == nil {
+	if err := config.DefaultBeforeInit(c.opts.Context, c); err != nil && !c.opts.AllowFail {
+		return err
+	}
+
+	if c.opts.Codec == nil && !c.opts.AllowFail {
 		return config.ErrCodecMissing
 	}
 
@@ -77,25 +83,47 @@ func (c *consulConfig) Init(opts ...config.Option) error {
 	c.cli = cli
 	c.path = path
 
+	if err := config.DefaultAfterInit(c.opts.Context, c); err != nil && !c.opts.AllowFail {
+		return err
+	}
+
 	return nil
 }
 
-func (c *consulConfig) Load(ctx context.Context, opts ...config.LoadOption) error {
+func (c *consulConfig) Load(ctx context.Context, opts ...options.Option) error {
-	for _, fn := range c.opts.BeforeLoad {
+	if c.opts.SkipLoad != nil && c.opts.SkipLoad(ctx, c) {
-		if err := fn(ctx, c); err != nil && !c.opts.AllowFail {
+		return nil
+	}
+
+	options := config.NewLoadOptions(opts...)
+
+	if err := config.DefaultBeforeLoad(ctx, c); err != nil && !c.opts.AllowFail {
 		return err
 	}
+
+	path := c.path
+
+	if options.Context != nil {
+		if v, ok := options.Context.Value(pathKey{}).(string); ok && v != "" {
+			path = v
+		}
+	}
+
+	pair, _, err := c.cli.KV().Get(path, nil)
+	if err != nil {
+		err = fmt.Errorf("consul path %s load error: %w", path, err)
+	} else if pair == nil {
+		err = fmt.Errorf("consul path %s load error: not found", path)
 	}
 
-	pair, _, err := c.cli.KV().Get(c.path, nil)
 	if err != nil && !c.opts.AllowFail {
-		return fmt.Errorf("consul path %s load error: %v", c.path, err)
+		return err
-	} else if pair == nil && !c.opts.AllowFail {
+	}
-		return fmt.Errorf("consul path %s not found", c.path)
+
+	if err = config.DefaultAfterLoad(ctx, c); err != nil && !c.opts.AllowFail {
+		return err
 	}
 
-	if err == nil && pair != nil {
-		options := config.NewLoadOptions(opts...)
 	mopts := []func(*mergo.Config){mergo.WithTypeCheck}
 	if options.Override {
 		mopts = append(mopts, mergo.WithOverride)
@@ -104,11 +132,16 @@ func (c *consulConfig) Load(ctx context.Context, opts ...config.LoadOption) erro
 		mopts = append(mopts, mergo.WithAppendSlice)
 	}
 
-		src, err := rutil.Zero(c.opts.Struct)
+	dst := c.opts.Struct
+	if options.Struct != nil {
+		dst = options.Struct
+	}
+
+	src, err := rutil.Zero(dst)
 	if err == nil {
 		err = c.opts.Codec.Unmarshal(pair.Value, src)
 		if err == nil {
-				err = mergo.Merge(c.opts.Struct, src, mopts...)
+			err = mergo.Merge(dst, src, mopts...)
 		}
 	}
 
@@ -116,38 +149,49 @@ func (c *consulConfig) Load(ctx context.Context, opts ...config.LoadOption) erro
 		return err
 	}
 
-	}
+	if err := config.DefaultAfterLoad(ctx, c); err != nil && !c.opts.AllowFail {
-
-	for _, fn := range c.opts.AfterLoad {
-		if err := fn(ctx, c); err != nil && !c.opts.AllowFail {
 		return err
 	}
-	}
 
 	return nil
 }
 
-func (c *consulConfig) Save(ctx context.Context, opts ...config.SaveOption) error {
+func (c *consulConfig) Save(ctx context.Context, opts ...options.Option) error {
-	for _, fn := range c.opts.BeforeSave {
+	if c.opts.SkipSave != nil && c.opts.SkipSave(ctx, c) {
-		if err := fn(ctx, c); err != nil && !c.opts.AllowFail {
+		return nil
+	}
+
+	options := config.NewSaveOptions(opts...)
+
+	if err := config.DefaultBeforeSave(ctx, c); err != nil && !c.opts.AllowFail {
 		return err
 	}
+
+	path := c.path
+
+	dst := c.opts.Struct
+	if options.Struct != nil {
+		dst = options.Struct
+	}
+
+	if options.Context != nil {
+		if v, ok := options.Context.Value(pathKey{}).(string); ok && v != "" {
+			path = v
+		}
 	}
 
-	buf, err := c.opts.Codec.Marshal(c.opts.Struct)
+	buf, err := c.opts.Codec.Marshal(dst)
 	if err == nil {
-		_, err = c.cli.KV().Put(&api.KVPair{Key: c.path, Value: buf}, nil)
+		_, err = c.cli.KV().Put(&api.KVPair{Key: path, Value: buf}, nil)
 	}
 
 	if err != nil && !c.opts.AllowFail {
-		return fmt.Errorf("consul path %s save error: %v", c.path, err)
+		return fmt.Errorf("consul path %s save error: %v", path, err)
 	}
 
-	for _, fn := range c.opts.AfterSave {
+	if err := config.DefaultAfterSave(ctx, c); err != nil && !c.opts.AllowFail {
-		if err := fn(ctx, c); err != nil && !c.opts.AllowFail {
 		return err
 	}
-	}
 
 	return nil
 }
@@ -160,7 +204,31 @@ func (c *consulConfig) Name() string {
 	return c.opts.Name
 }
 
-func NewConfig(opts ...config.Option) config.Config {
+func (c *consulConfig) Watch(ctx context.Context, opts ...options.Option) (config.Watcher, error) {
+	path := c.path
+	options := config.NewWatchOptions(opts...)
+	if options.Context != nil {
+		if v, ok := options.Context.Value(pathKey{}).(string); ok && v != "" {
+			path = v
+		}
+	}
+
+	w := &consulWatcher{
+		cli:   c.cli,
+		path:  path,
+		opts:  c.opts,
+		wopts: config.NewWatchOptions(opts...),
+		done:  make(chan struct{}),
+		vchan: make(chan map[string]interface{}),
+		echan: make(chan error),
+	}
+
+	go w.run()
+
+	return w, nil
+}
+
+func NewConfig(opts ...options.Option) config.Config {
 	options := config.NewOptions(opts...)
 	if len(options.StructTag) == 0 {
 		options.StructTag = DefaultStructTag

go.mod

@@ -1,13 +1,33 @@
-module github.com/unistack-org/micro-config-consul/v3
+module go.unistack.org/micro-config-consul/v4
 
-go 1.16
+go 1.20
 
 require (
-	github.com/google/btree v1.0.0 // indirect
+	dario.cat/mergo v1.0.0
-	github.com/hashicorp/consul/api v1.8.1
+	github.com/hashicorp/consul/api v1.28.2
-	github.com/hashicorp/go-hclog v0.16.1
+	github.com/hashicorp/go-hclog v1.6.2
-	github.com/hashicorp/golang-lru v0.5.3 // indirect
+	go.unistack.org/micro/v4 v4.0.17
-	github.com/imdario/mergo v0.3.12
+)
-	github.com/pkg/errors v0.9.1 // indirect
+
-	github.com/unistack-org/micro/v3 v3.4.0
+require (
+	github.com/armon/go-metrics v0.4.1 // indirect
+	github.com/fatih/color v1.16.0 // indirect
+	github.com/google/uuid v1.6.0 // indirect
+	github.com/hashicorp/errwrap v1.1.0 // indirect
+	github.com/hashicorp/go-cleanhttp v0.5.2 // indirect
+	github.com/hashicorp/go-immutable-radix v1.3.1 // indirect
+	github.com/hashicorp/go-msgpack v1.1.5 // indirect
+	github.com/hashicorp/go-multierror v1.1.1 // indirect
+	github.com/hashicorp/go-rootcerts v1.0.2 // indirect
+	github.com/hashicorp/go-version v1.6.0 // indirect
+	github.com/hashicorp/golang-lru v1.0.2 // indirect
+	github.com/hashicorp/serf v0.10.1 // indirect
+	github.com/mattn/go-colorable v0.1.13 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/mitchellh/go-homedir v1.1.0 // indirect
+	github.com/mitchellh/mapstructure v1.5.0 // indirect
+	github.com/patrickmn/go-cache v2.1.0+incompatible // indirect
+	github.com/silas/dag v0.0.0-20220518035006-a7e85ada93c5 // indirect
+	golang.org/x/exp v0.0.0-20240222234643-814bf88cf225 // indirect
+	golang.org/x/sys v0.18.0 // indirect
 )

go.sum

@@ -1,140 +1,226 @@
+dario.cat/mergo v1.0.0 h1:AGCNq9Evsj31mOgNPcLyXc+4PNABt905YmuqPYYpBWk=
+dario.cat/mergo v1.0.0/go.mod h1:uNxQE+84aUszobStD9th8a29P2fMDhsBdgRYvZOxGmk=
+github.com/DataDog/datadog-go v3.2.0+incompatible/go.mod h1:LButxg5PwREeZtORoXG3tL4fMGNddJ+vMq1mwgfaqoQ=
+github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
+github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
+github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
+github.com/alecthomas/units v0.0.0-20190717042225-c3de453c63f4/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
 github.com/armon/circbuf v0.0.0-20150827004946-bbbad097214e/go.mod h1:3U/XgcO3hCbHZ8TKRvWD2dDTCfh9M9ya+I9JpbB7O8o=
-github.com/armon/go-metrics v0.0.0-20180917152333-f0300d1749da h1:8GUt8eRujhVEGZFFEjBj46YV4rDjvGrNxb0KMWYkL2I=
 github.com/armon/go-metrics v0.0.0-20180917152333-f0300d1749da/go.mod h1:Q73ZrmVTwzkszR9V5SSuryQ31EELlFMUz1kKyl939pY=
+github.com/armon/go-metrics v0.4.1 h1:hR91U9KYmb6bLBYLQjyM+3j+rcd/UhE+G78SFnF8gJA=
+github.com/armon/go-metrics v0.4.1/go.mod h1:E6amYzXo6aW1tqzoZGT755KkbgrJsSdpwZ+3JqfkOG4=
 github.com/armon/go-radix v0.0.0-20180808171621-7fddfc383310/go.mod h1:ufUuZ+zHj4x4TnLV4JWEpy2hxWSpsRywHrMgIH9cCH8=
 github.com/armon/go-radix v1.0.0/go.mod h1:ufUuZ+zHj4x4TnLV4JWEpy2hxWSpsRywHrMgIH9cCH8=
+github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
+github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
+github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
 github.com/bgentry/speakeasy v0.1.0/go.mod h1:+zsyZBPWlz7T6j88CTgSN5bM796AkVf0kBD4zp0CCIs=
+github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
+github.com/circonus-labs/circonus-gometrics v2.3.1+incompatible/go.mod h1:nmEj6Dob7S7YxXgwXpfOuvO54S+tGdZdw9fuRZt25Ag=
+github.com/circonus-labs/circonusllhist v0.1.3/go.mod h1:kMXHVDlOchFAehlya5ePtbp5jckzBHf4XRpQvBOLI+I=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/dgrijalva/jwt-go v3.2.0+incompatible/go.mod h1:E3ru+11k8xSBh+hMPgOLZmtrrCbhqsmaPHjLKYnJCaQ=
+github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc h1:U9qPSI2PIWSS1VwoXQT9A3Wy9MM3WgvqSxFWenqJduM=
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+gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.3.0 h1:clyUAQHOM3G0M3f5vQj7LuJrETvjVot3Z5el9nffUtU=
+gopkg.in/yaml.v2 v2.2.5/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

logger.go

@@ -9,13 +9,11 @@ import (
 	"os"
 
 	hclog "github.com/hashicorp/go-hclog"
-	"github.com/unistack-org/micro/v3/logger"
+	"go.unistack.org/micro/v4/logger"
 )
 
-var (
 // to check implementation
-	_ hclog.Logger = &consulLogger{}
+var _ hclog.Logger = &consulLogger{}
-)
 
 type consulLogger struct {
 	logger logger.Logger
@@ -25,36 +23,54 @@ func (l *consulLogger) Name() string {
 	return l.logger.String()
 }
 
-func (l *consulLogger) With(args ...interface{}) hclog.Logger {
+func (l *consulLogger) GetLevel() hclog.Level {
-	fields := make(map[string]interface{}, int(len(args)/2))
+	switch l.logger.Options().Level {
-	for i := 0; i < int(len(args)/2); i = i + 2 {
+	case logger.DebugLevel:
-		fields[fmt.Sprintf("%v", args[i])] = args[i+1]
+		return hclog.Debug
+	case logger.TraceLevel:
+		return hclog.Trace
+	case logger.InfoLevel:
+		return hclog.Info
+	case logger.WarnLevel:
+		return hclog.Warn
+	case logger.ErrorLevel:
+		return hclog.Error
+	default:
+		return hclog.Info
 	}
-	return &consulLogger{logger: l.logger.Fields(fields)}
+}
+
+func (l *consulLogger) With(args ...interface{}) hclog.Logger {
+	fields := make([]interface{}, len(args))
+	for i := 0; i < int(len(args)/2); i += 2 {
+		fields = append(fields, fmt.Sprintf("%v", args[i]), args[i+1])
+	}
+	return &consulLogger{logger: l.logger.Clone(logger.WithAttrs(fields...))}
 }
 
 func (l *consulLogger) Debug(format string, msg ...interface{}) {
-	l.logger.Debugf(context.TODO(), format, msg...)
+	l.logger.Debug(context.TODO(), fmt.Sprintf(format, msg...))
 }
 
 func (l *consulLogger) Error(format string, msg ...interface{}) {
-	l.logger.Errorf(context.TODO(), format, msg...)
+	l.logger.Error(context.TODO(), fmt.Sprintf(format, msg...))
 }
 
 func (l *consulLogger) Info(format string, msg ...interface{}) {
-	l.logger.Infof(context.TODO(), format, msg...)
+	l.logger.Info(context.TODO(), fmt.Sprintf(format, msg...))
 }
 
 func (l *consulLogger) Warn(format string, msg ...interface{}) {
-	l.logger.Warnf(context.TODO(), format, msg...)
+	l.logger.Warn(context.TODO(), fmt.Sprintf(format, msg...))
 }
+
 func (l *consulLogger) Trace(format string, msg ...interface{}) {
-	l.logger.Tracef(context.TODO(), format, msg...)
+	l.logger.Trace(context.TODO(), fmt.Sprintf(format, msg...))
 }
 
 func (l *consulLogger) ImpliedArgs() []interface{} {
-	fields := make([]interface{}, len(l.logger.Options().Fields)*2)
+	fields := make([]interface{}, len(l.logger.Options().Attrs)*2)
-	for k, v := range l.logger.Options().Fields {
+	for k, v := range l.logger.Options().Attrs {
 		fields = append(fields, k, v)
 	}
 	return fields
@@ -62,16 +78,25 @@ func (l *consulLogger) ImpliedArgs() []interface{} {
 
 func (l *consulLogger) Named(name string) hclog.Logger {
 	var newname string
-	if oldname, ok := l.logger.Options().Fields["name"]; ok {
+	var oldname string
+
+	fields := l.logger.Options().Attrs
+	for i := 0; i < len(fields); i += 2 {
+		if fields[i].(string) == "name" {
+			oldname = fields[i+1].(string)
+		}
+	}
+
+	if len(oldname) > 0 {
 		newname = fmt.Sprintf("%s.%s", oldname, name)
 	} else {
-		newname = fmt.Sprintf("%s", name)
+		newname = name
 	}
-	return &consulLogger{logger: l.logger.Fields(map[string]interface{}{"name": newname})}
+	return &consulLogger{logger: l.logger.Clone(logger.WithAttrs("name", newname))}
 }
 
 func (l *consulLogger) ResetNamed(name string) hclog.Logger {
-	return &consulLogger{logger: l.logger.Fields(map[string]interface{}{"name": name})}
+	return &consulLogger{logger: l.logger.Clone(logger.WithAttrs("name", name))}
 }
 
 func (l *consulLogger) SetLevel(level hclog.Level) {

options.go

@@ -4,43 +4,43 @@ import (
 	"time"
 
 	"github.com/hashicorp/consul/api"
-	"github.com/unistack-org/micro/v3/config"
+	"go.unistack.org/micro/v4/options"
 )
 
 type configKey struct{}
 
-func Config(cfg *api.Config) config.Option {
+func Config(cfg *api.Config) options.Option {
-	return config.SetOption(configKey{}, cfg)
+	return options.ContextOption(configKey{}, cfg)
 }
 
 type tokenKey struct{}
 
-func Token(token string) config.Option {
+func Token(token string) options.Option {
-	return config.SetOption(tokenKey{}, token)
+	return options.ContextOption(tokenKey{}, token)
 }
 
 type addrKey struct{}
 
-func Address(addr string) config.Option {
+func Address(addr string) options.Option {
-	return config.SetOption(addrKey{}, addr)
+	return options.ContextOption(addrKey{}, addr)
 }
 
 type pathKey struct{}
 
-func Path(path string) config.Option {
+func Path(path string) options.Option {
-	return config.SetOption(pathKey{}, path)
+	return options.ContextOption(pathKey{}, path)
+}
+
+type timeoutKey struct{}
+
+func Timeout(td time.Duration) options.Option {
+	return options.ContextOption(timeoutKey{}, td)
 }
 
 /*
 type tlsConfigKey struct{}
 
-func TLSConfig(t *tls.Config) config.Option {
+func TLSConfig(t *tls.Config) options.Option {
-	return config.SetOption(tlsConfigKey{}, t)
+	return options.ContextOption(tlsConfigKey{}, t)
 }
 */
-
-type timeoutKey struct{}
-
-func Timeout(td time.Duration) config.Option {
-	return config.SetOption(timeoutKey{}, td)
-}

watcher.go

@@ -0,0 +1,103 @@
+package consul
+
+import (
+	"fmt"
+	"reflect"
+
+	"github.com/hashicorp/consul/api"
+	"go.unistack.org/micro/v4/config"
+	"go.unistack.org/micro/v4/util/jitter"
+	rutil "go.unistack.org/micro/v4/util/reflect"
+)
+
+type consulWatcher struct {
+	cli   *api.Client
+	path  string
+	opts  config.Options
+	wopts config.WatchOptions
+	done  chan struct{}
+	vchan chan map[string]interface{}
+	echan chan error
+}
+
+func (w *consulWatcher) run() {
+	ticker := jitter.NewTicker(w.wopts.MinInterval, w.wopts.MaxInterval)
+	defer ticker.Stop()
+
+	src := w.opts.Struct
+	if w.wopts.Struct != nil {
+		src = w.wopts.Struct
+	}
+
+	for {
+		select {
+		case <-w.done:
+			return
+		case <-ticker.C:
+			dst, err := rutil.Zero(src)
+			if err != nil {
+				w.echan <- err
+				return
+			}
+
+			pair, _, err := w.cli.KV().Get(w.path, nil)
+			if err != nil {
+				w.echan <- err
+				return
+			}
+
+			if pair == nil {
+				w.echan <- fmt.Errorf("consul path %s not found", w.path)
+				return
+			}
+
+			err = w.opts.Codec.Unmarshal(pair.Value, dst)
+			if err != nil {
+				w.echan <- err
+				return
+			}
+
+			srcmp, err := rutil.StructFieldsMap(src)
+			if err != nil {
+				w.echan <- err
+				return
+			}
+
+			dstmp, err := rutil.StructFieldsMap(dst)
+			if err != nil {
+				w.echan <- err
+				return
+			}
+
+			for sk, sv := range srcmp {
+				if reflect.DeepEqual(dstmp[sk], sv) {
+					delete(dstmp, sk)
+				}
+			}
+			if len(dstmp) > 0 {
+				w.vchan <- dstmp
+				src = dst
+			}
+		}
+	}
+}
+
+func (w *consulWatcher) Next() (map[string]interface{}, error) {
+	select {
+	case <-w.done:
+		break
+	case err := <-w.echan:
+		return nil, err
+	case v, ok := <-w.vchan:
+		if !ok {
+			break
+		}
+		return v, nil
+	}
+	return nil, config.ErrWatcherStopped
+}
+
+func (w *consulWatcher) Stop() error {
+	close(w.done)
+	return nil
+}