Merge pull request #46 from unistack-org/master

merge stable

.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/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@v2
+    - name: setup
+      uses: actions/setup-go@v2
+      with:
+        go-version: 1.16
+    # Initializes the CodeQL tools for scanning.
+    - name: init
+      uses: github/codeql-action/init@v1
+      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@v1
+
+    # 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@v1

.github/workflows/dependabot-automerge.yml

@@ -0,0 +1,31 @@
+name: "prautomerge"
+
+on:
+  pull_request_target:
+    types: [assigned, opened, synchronize, reopened]
+
+permissions:
+  pull-requests: write
+  contents: write
+
+jobs:
+  dependabot:
+    runs-on: ubuntu-latest
+    if: ${{ github.actor == 'dependabot[bot]' }}
+    steps:
+      - name: metadata
+        id: metadata
+        uses: dependabot/fetch-metadata@v1.1.1
+        with:
+          github-token: "${{ secrets.TOKEN }}"
+      - name: approve
+        run: gh pr review --approve "$PR_URL"
+        env:
+          PR_URL: ${{github.event.pull_request.html_url}}
+          GITHUB_TOKEN: ${{secrets.TOKEN}}
+      - name: 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}}

consul.go

@@ -1,20 +1,16 @@
-package consul
+package consul // import "go.unistack.org/micro-config-consul/v3"
 
 import (
 	"context"
-	"errors"
 	"fmt"
 
 	"github.com/hashicorp/consul/api"
 	"github.com/imdario/mergo"
-	"github.com/unistack-org/micro/v3/config"
-	rutil "github.com/unistack-org/micro/v3/util/reflect"
+	"go.unistack.org/micro/v3/config"
+	rutil "go.unistack.org/micro/v3/util/reflect"
 )
 
-var (
-	DefaultStructTag = "consul"
-	ErrPathNotExist  = errors.New("path is not exist")
-)
+var DefaultStructTag = "consul"
 
 type consulConfig struct {
 	opts config.Options
@@ -72,9 +68,12 @@ func (c *consulConfig) Init(opts ...config.Option) error {
 	}
 
 	cli, err := api.NewClient(cfg)
-	if err != nil && !c.opts.AllowFail {
+	if err != nil {
+		c.opts.Logger.Errorf(c.opts.Context, "consul init err: %v", err)
+		if !c.opts.AllowFail {
 			return err
 		}
+	}
 
 	c.cli = cli
 	c.path = path
@@ -83,21 +82,33 @@ func (c *consulConfig) Init(opts ...config.Option) error {
 }
 
 func (c *consulConfig) Load(ctx context.Context, opts ...config.LoadOption) error {
-	for _, fn := range c.opts.BeforeLoad {
-		if err := fn(ctx, c); err != nil && !c.opts.AllowFail {
+	path := c.path
+	options := config.NewLoadOptions(opts...)
+	if options.Context != nil {
+		if v, ok := options.Context.Value(pathKey{}).(string); ok && v != "" {
+			path = v
+		}
+	}
+
+	if err := config.DefaultBeforeLoad(ctx, c); err != nil {
 		return err
 	}
+
+	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 load error: %v", err)
-	} else if pair == nil && !c.opts.AllowFail {
-		return fmt.Errorf("consul path not found %v", ErrPathNotExist)
+	if err != nil {
+		c.opts.Logger.Error(c.opts.Context, err)
+		if !c.opts.AllowFail {
+			return err
+		}
+		return config.DefaultAfterLoad(ctx, c)
 	}
 
-	if err == nil && pair != nil {
-		options := config.NewLoadOptions(opts...)
 	mopts := []func(*mergo.Config){mergo.WithTypeCheck}
 	if options.Override {
 		mopts = append(mopts, mergo.WithOverride)
@@ -106,50 +117,61 @@ 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...)
 		}
 	}
 
-		if err != nil && !c.opts.AllowFail {
+	if err != nil {
+		c.opts.Logger.Errorf(c.opts.Context, "consul load err: %v", err)
+		if !c.opts.AllowFail {
 			return err
 		}
-
 	}
 
-	for _, fn := range c.opts.AfterLoad {
-		if err := fn(ctx, c); err != nil && !c.opts.AllowFail {
+	if err := config.DefaultAfterLoad(ctx, c); err != nil {
 		return err
 	}
-	}
 
 	return nil
 }
 
 func (c *consulConfig) Save(ctx context.Context, opts ...config.SaveOption) error {
-	for _, fn := range c.opts.BeforeSave {
-		if err := fn(ctx, c); err != nil && !c.opts.AllowFail {
-			return err
+	path := c.path
+	options := config.NewSaveOptions(opts...)
+	if options.Context != nil {
+		if v, ok := options.Context.Value(pathKey{}).(string); ok && v != "" {
+			path = v
 		}
 	}
 
+	if err := config.DefaultBeforeSave(ctx, c); err != nil {
+		return err
+	}
+
 	buf, err := c.opts.Codec.Marshal(c.opts.Struct)
 	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 save error: %v", err)
+	if err != nil {
+		c.opts.Logger.Errorf(c.opts.Context, "consul path %s save error: %v", path, err)
+		if !c.opts.AllowFail {
+			return fmt.Errorf("consul path %s save error: %v", path, err)
+		}
 	}
 
-	for _, fn := range c.opts.AfterSave {
-		if err := fn(ctx, c); err != nil && !c.opts.AllowFail {
+	if err := config.DefaultAfterSave(ctx, c); err != nil {
 		return err
 	}
-	}
 
 	return nil
 }
@@ -162,6 +184,30 @@ func (c *consulConfig) Name() string {
 	return c.opts.Name
 }
 
+func (c *consulConfig) Watch(ctx context.Context, opts ...config.WatchOption) (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 ...config.Option) config.Config {
 	options := config.NewOptions(opts...)
 	if len(options.StructTag) == 0 {

go.mod

@@ -1,13 +1,20 @@
-module github.com/unistack-org/micro-config-consul/v3
+module go.unistack.org/micro-config-consul/v3
 
 go 1.16
 
 require (
-	github.com/google/btree v1.0.0 // indirect
-	github.com/hashicorp/consul/api v1.8.1
-	github.com/hashicorp/go-hclog v0.16.1
-	github.com/hashicorp/golang-lru v0.5.3 // indirect
+	github.com/armon/go-metrics v0.3.9 // indirect
+	github.com/fatih/color v1.13.0 // indirect
+	github.com/google/btree v1.0.1 // indirect
+	github.com/hashicorp/consul/api v1.11.0
+	github.com/hashicorp/go-cleanhttp v0.5.2 // indirect
+	github.com/hashicorp/go-hclog v0.16.2
+	github.com/hashicorp/go-immutable-radix v1.3.1 // indirect
+	github.com/hashicorp/golang-lru v0.5.4 // indirect
 	github.com/imdario/mergo v0.3.12
+	github.com/mattn/go-colorable v0.1.11 // indirect
+	github.com/mitchellh/mapstructure v1.4.2 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
-	github.com/unistack-org/micro/v3 v3.4.0
+	github.com/stretchr/testify v1.7.0 // indirect
+	go.unistack.org/micro/v3 v3.8.9
 )

go.sum

@@ -1,41 +1,70 @@
+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 v0.3.9 h1:O2sNqxBdvq8Eq5xmzljcYzAORli6RWCvEym4cJf9m18=
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+github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
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-github.com/dgrijalva/jwt-go v3.2.0+incompatible/go.mod h1:E3ru+11k8xSBh+hMPgOLZmtrrCbhqsmaPHjLKYnJCaQ=
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@@ -45,8 +74,8 @@ github.com/hashicorp/go-uuid v1.0.0/go.mod h1:6SBZvOh/SIDV7/2o3Jml5SYk/TvGqwFJ/b
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@@ -55,19 +84,29 @@ github.com/hashicorp/serf v0.9.5 h1:EBWvyu9tcRszt3Bxp3KNssBMP1KuHWyO51lz9+786iM=
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@@ -77,11 +116,19 @@ github.com/mitchellh/go-homedir v1.1.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrk
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 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20190923035154-9ee001bba392 h1:ACG4HJsFiNMf47Y4PeRoebLNy/2lXT9EtprMuTFWt1M=
 golang.org/x/crypto v0.0.0-20190923035154-9ee001bba392/go.mod h1:/lpIB1dKB+9EgE3H3cr1v9wB50oz8l4C4h62xy7jSTY=
 golang.org/x/net v0.0.0-20181023162649-9b4f9f5ad519/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
+golang.org/x/net v0.0.0-20181114220301-adae6a3d119a/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
+golang.org/x/net v0.0.0-20190613194153-d28f0bde5980/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20190923162816-aa69164e4478/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
-golang.org/x/net v0.0.0-20210510120150-4163338589ed h1:p9UgmWI9wKpfYmgaV/IZKGdXc5qEK45tDwwwDyjS26I=
-golang.org/x/net v0.0.0-20210510120150-4163338589ed/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
+golang.org/x/net v0.0.0-20210928044308-7d9f5e0b762b h1:eB48h3HiRycXNy8E0Gf5e0hv7YT6Kt14L/D73G1fuwo=
+golang.org/x/net v0.0.0-20210928044308-7d9f5e0b762b/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
+golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20180823144017-11551d06cbcc/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20181026203630-95b1ffbd15a5/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20181116152217-5ac8a444bdc5/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190222072716-a9d3bda3a223/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20190422165155-953cdadca894/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190922100055-0a153f010e69/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190924154521-2837fb4f24fe/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191008105621-543471e840be/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191026070338-33540a1f6037/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200116001909-b77594299b42/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20200122134326-e047566fdf82/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200124204421-9fbb57f87de9/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200223170610-d5e6a3e2c0ae/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20210423082822-04245dca01da h1:b3NXsE2LusjYGGjL5bxEVZZORm/YEFFrWFjR8eFrw/c=
 golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20210927094055-39ccf1dd6fa6 h1:foEbQz/B0Oz6YIqu/69kfXPYeFQAuuMYFkjaqXzl5Wo=
+golang.org/x/sys v0.0.0-20210927094055-39ccf1dd6fa6/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
@@ -132,9 +210,21 @@ golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20190907020128-2ca718005c18/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 h1:go1bK/D/BFZV2I8cIQd1NKEZ+0owSTG1fDTci4IqFcE=
+golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
+google.golang.org/protobuf v1.27.1 h1:SnqbnDw1V7RiZcXPx5MEeqPv2s79L9i7BJUlG/+RurQ=
+google.golang.org/protobuf v1.27.1/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
+gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.5/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.3.0 h1:clyUAQHOM3G0M3f5vQj7LuJrETvjVot3Z5el9nffUtU=
 gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/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/v3/logger"
 )
 
-var (
-	// to check implementation
-	_ hclog.Logger = &consulLogger{}
-)
+// to check implementation
+var _ hclog.Logger = &consulLogger{}
 
 type consulLogger struct {
 	logger logger.Logger
@@ -27,7 +25,7 @@ func (l *consulLogger) Name() string {
 
 func (l *consulLogger) With(args ...interface{}) hclog.Logger {
 	fields := make(map[string]interface{}, int(len(args)/2))
-	for i := 0; i < int(len(args)/2); i = i + 2 {
+	for i := 0; i < int(len(args)/2); i += 2 {
 		fields[fmt.Sprintf("%v", args[i])] = args[i+1]
 	}
 	return &consulLogger{logger: l.logger.Fields(fields)}
@@ -48,6 +46,7 @@ func (l *consulLogger) Info(format string, msg ...interface{}) {
 func (l *consulLogger) Warn(format string, msg ...interface{}) {
 	l.logger.Warnf(context.TODO(), format, msg...)
 }
+
 func (l *consulLogger) Trace(format string, msg ...interface{}) {
 	l.logger.Tracef(context.TODO(), format, msg...)
 }
@@ -62,16 +61,25 @@ 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().Fields
+	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.Fields("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.Fields("name", name)}
 }
 
 func (l *consulLogger) SetLevel(level hclog.Level) {

options.go

@@ -4,7 +4,7 @@ import (
 	"time"
 
 	"github.com/hashicorp/consul/api"
-	"github.com/unistack-org/micro/v3/config"
+	"go.unistack.org/micro/v3/config"
 )
 
 type configKey struct{}
@@ -44,3 +44,15 @@ type timeoutKey struct{}
 func Timeout(td time.Duration) config.Option {
 	return config.SetOption(timeoutKey{}, td)
 }
+
+func LoadPath(path string) config.LoadOption {
+	return config.SetLoadOption(pathKey{}, path)
+}
+
+func SavePath(path string) config.SaveOption {
+	return config.SetSaveOption(pathKey{}, path)
+}
+
+func WatchPath(path string) config.WatchOption {
+	return config.SetWatchOption(pathKey{}, path)
+}

watcher.go

@@ -0,0 +1,103 @@
+package consul
+
+import (
+	"fmt"
+	"reflect"
+
+	"github.com/hashicorp/consul/api"
+	"go.unistack.org/micro/v3/config"
+	"go.unistack.org/micro/v3/util/jitter"
+	rutil "go.unistack.org/micro/v3/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
+}