fix import guard

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

@@ -1,20 +0,0 @@
-{
-  "extends": [
-    "config:base"
-  ],
-  "postUpdateOptions": ["gomodTidy"], 
-  "packageRules": [
-    {
-      "matchUpdateTypes": ["minor", "patch", "pin", "digest"],
-      "automerge": true
-    },
-    {
-      "groupName": "all deps",
-      "separateMajorMinor": true,
-      "groupSlug": "all",
-      "packagePatterns": [
-        "*"
-      ]
-    }
-  ]
-}

.github/workflows/codeql-analysis.yml

@@ -0,0 +1,75 @@
+# 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 ]
+  pull_request:
+    # The branches below must be a subset of the branches above
+    branches: [ master ]
+  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 repository
+      uses: actions/checkout@v2
+
+    # Initializes the CodeQL tools for scanning.
+    - name: Initialize CodeQL
+      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: Perform CodeQL Analysis
+      uses: github/codeql-action/analyze@v1

.github/workflows/dependabot-automerge.yml

@@ -0,0 +1,66 @@
+name: "prautomerge"
+
+on:
+  workflow_run:
+    workflows: ["prbuild"]
+    types:
+      - completed
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  Dependabot-Automerge:
+    runs-on: ubuntu-latest
+    # Contains workaround to execute if dependabot updates the PR by checking for the base branch in the linked PR
+    # The the github.event.workflow_run.event value is 'push' and not 'pull_request'
+    # dont work with multiple workflows when last returns success
+    if: >-
+      github.event.workflow_run.conclusion == 'success'
+      && github.actor == 'dependabot[bot]'
+      && github.event.sender.login == 'dependabot[bot]'
+      && github.event.sender.type == 'Bot'
+      && (github.event.workflow_run.event == 'pull_request'
+          || (github.event.workflow_run.event == 'push' && github.event.workflow_run.pull_requests[0].base.ref == github.event.repository.default_branch ))
+    steps:
+      - name: Approve Changes and Merge changes if label 'dependencies' is set
+        uses: actions/github-script@v5
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          script: |
+            console.log(context.payload.workflow_run);
+            
+            var labelNames = await github.paginate(
+              github.issues.listLabelsOnIssue,
+              {
+                repo: context.repo.repo,
+                owner: context.repo.owner,
+                issue_number: context.payload.workflow_run.pull_requests[0].number,
+              },
+              (response) => response.data.map(
+                (label) => label.name
+              )
+            );
+
+            console.log(labelNames);
+
+            if (labelNames.includes('dependencies')) {
+              console.log('Found label');
+
+              await github.pulls.createReview({
+                repo: context.repo.repo,
+                owner: context.repo.owner,
+                pull_number: context.payload.workflow_run.pull_requests[0].number,
+                event: 'APPROVE'
+              });
+              console.log('Approved PR');
+
+              await github.pulls.merge({
+                repo: context.repo.repo,
+                owner: context.repo.owner,
+                pull_number: context.payload.workflow_run.pull_requests[0].number,
+              });
+
+              console.log('Merged PR');
+            }

env.go

@@ -1,4 +1,4 @@
-package env
+package env // import "go.unistack.org/micro-config-env/v3"
 
 import (
 	"context"
@@ -9,13 +9,11 @@ import (
 	"strings"
 
 	"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 = "env"
-)
+var DefaultStructTag = "env"
 
 type envConfig struct {
 	opts config.Options
@@ -32,35 +30,42 @@ func (c *envConfig) Init(opts ...config.Option) error {
 	return nil
 }
 
-func (c *envConfig) Load(ctx context.Context) error {
-	for _, fn := range c.opts.BeforeLoad {
-		if err := fn(ctx, c); err != nil && !c.opts.AllowFail {
-			return err
-		}
+func (c *envConfig) Load(ctx context.Context, opts ...config.LoadOption) error {
+	if err := config.DefaultBeforeLoad(ctx, c); err != nil {
+		return err
+	}
+
+	options := config.NewLoadOptions(opts...)
+	mopts := []func(*mergo.Config){mergo.WithTypeCheck}
+	if options.Override {
+		mopts = append(mopts, mergo.WithOverride)
+	}
+	if options.Append {
+		mopts = append(mopts, mergo.WithAppendSlice)
 	}
 
 	src, err := rutil.Zero(c.opts.Struct)
 	if err == nil {
-		err = c.fillValues(ctx, reflect.ValueOf(src))
-	}
-	if err != nil && !c.opts.AllowFail {
-		return err
+		if err = fillValues(ctx, reflect.ValueOf(src), c.opts.StructTag); err == nil {
+			err = mergo.Merge(c.opts.Struct, src, mopts...)
+		}
 	}
 
-	if err = mergo.Merge(c.opts.Struct, src, mergo.WithOverride, mergo.WithTypeCheck, mergo.WithAppendSlice); err != nil && !c.opts.AllowFail {
-		return err
-	}
-
-	for _, fn := range c.opts.AfterLoad {
-		if err := fn(ctx, c); err != nil && !c.opts.AllowFail {
+	if err != nil {
+		c.opts.Logger.Errorf(c.opts.Context, "env load err: %v", err)
+		if !c.opts.AllowFail {
 			return err
 		}
 	}
 
+	if err := config.DefaultAfterLoad(ctx, c); err != nil {
+		return err
+	}
+
 	return nil
 }
 
-func (c *envConfig) fillValue(ctx context.Context, value reflect.Value, val string) error {
+func fillValue(ctx context.Context, value reflect.Value, val string) error {
 	switch value.Kind() {
 	case reflect.Map:
 		t := value.Type()
@@ -74,10 +79,10 @@ func (c *envConfig) fillValue(ctx context.Context, value reflect.Value, val stri
 			kv := strings.FieldsFunc(nval, func(c rune) bool { return c == '=' })
 			mkey := reflect.Indirect(reflect.New(kt))
 			mval := reflect.Indirect(reflect.New(et))
-			if err := c.fillValue(ctx, mkey, kv[0]); err != nil {
+			if err := fillValue(ctx, mkey, kv[0]); err != nil {
 				return err
 			}
-			if err := c.fillValue(ctx, mval, kv[1]); err != nil {
+			if err := fillValue(ctx, mval, kv[1]); err != nil {
 				return err
 			}
 			value.SetMapIndex(mkey, mval)
@@ -87,7 +92,7 @@ func (c *envConfig) fillValue(ctx context.Context, value reflect.Value, val stri
 		value.Set(reflect.MakeSlice(reflect.SliceOf(value.Type().Elem()), len(nvals), len(nvals)))
 		for idx, nval := range nvals {
 			nvalue := reflect.Indirect(reflect.New(value.Type().Elem()))
-			if err := c.fillValue(ctx, nvalue, nval); err != nil {
+			if err := fillValue(ctx, nvalue, nval); err != nil {
 				return err
 			}
 			value.Index(idx).Set(nvalue)
@@ -227,7 +232,7 @@ func (c *envConfig) setValues(ctx context.Context, valueOf reflect.Value) error
 	return nil
 }
 
-func (c *envConfig) fillValues(ctx context.Context, valueOf reflect.Value) error {
+func fillValues(ctx context.Context, valueOf reflect.Value, structTag string) error {
 	var values reflect.Value
 
 	if valueOf.Kind() == reflect.Ptr {
@@ -254,7 +259,7 @@ func (c *envConfig) fillValues(ctx context.Context, valueOf reflect.Value) error
 		switch value.Kind() {
 		case reflect.Struct:
 			value.Set(reflect.Indirect(reflect.New(value.Type())))
-			if err := c.fillValues(ctx, value); err != nil {
+			if err := fillValues(ctx, value, structTag); err != nil {
 				return err
 			}
 			continue
@@ -268,12 +273,12 @@ func (c *envConfig) fillValues(ctx context.Context, valueOf reflect.Value) error
 				value.Set(reflect.New(value.Type().Elem()))
 			}
 			value = value.Elem()
-			if err := c.fillValues(ctx, value); err != nil {
+			if err := fillValues(ctx, value, structTag); err != nil {
 				return err
 			}
 			continue
 		}
-		tag, ok := field.Tag.Lookup(c.opts.StructTag)
+		tag, ok := field.Tag.Lookup(structTag)
 		if !ok {
 			continue
 		}
@@ -282,7 +287,7 @@ func (c *envConfig) fillValues(ctx context.Context, valueOf reflect.Value) error
 			continue
 		}
 
-		if err := c.fillValue(ctx, value, val); err != nil {
+		if err := fillValue(ctx, value, val); err != nil {
 			return err
 		}
 	}
@@ -290,23 +295,22 @@ func (c *envConfig) fillValues(ctx context.Context, valueOf reflect.Value) error
 	return nil
 }
 
-func (c *envConfig) Save(ctx context.Context) error {
-	for _, fn := range c.opts.BeforeSave {
-		if err := fn(ctx, c); err != nil && !c.opts.AllowFail {
-			return err
-		}
-	}
-
-	if err := c.setValues(ctx, reflect.ValueOf(c.opts.Struct)); err != nil && !c.opts.AllowFail {
+func (c *envConfig) Save(ctx context.Context, opts ...config.SaveOption) error {
+	if err := config.DefaultBeforeSave(ctx, c); err != nil {
 		return err
 	}
 
-	for _, fn := range c.opts.AfterSave {
-		if err := fn(ctx, c); err != nil && !c.opts.AllowFail {
+	if err := c.setValues(ctx, reflect.ValueOf(c.opts.Struct)); err != nil {
+		c.opts.Logger.Errorf(c.opts.Context, "env save error: %v", err)
+		if !c.opts.AllowFail {
 			return err
 		}
 	}
 
+	if err := config.DefaultAfterSave(ctx, c); err != nil {
+		return err
+	}
+
 	return nil
 }
 
@@ -318,6 +322,20 @@ func (c *envConfig) Name() string {
 	return c.opts.Name
 }
 
+func (c *envConfig) Watch(ctx context.Context, opts ...config.WatchOption) (config.Watcher, error) {
+	w := &envWatcher{
+		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 {

env_test.go

@@ -1,12 +1,11 @@
-package env_test
+package env
 
 import (
 	"context"
 	"os"
 	"testing"
 
-	env "github.com/unistack-org/micro-config-env/v3"
-	"github.com/unistack-org/micro/v3/config"
+	"go.unistack.org/micro/v3/config"
 )
 
 type Config struct {
@@ -21,13 +20,13 @@ type Config struct {
 func TestLoad(t *testing.T) {
 	ctx := context.Background()
 	conf := &Config{StringValue: "before_load"}
-	cfg := env.NewConfig(config.Struct(conf))
+	cfg := NewConfig(config.Struct(conf))
 
 	if err := cfg.Init(); err != nil {
 		t.Fatal(err)
 	}
 
-	if err := cfg.Load(ctx); err != nil {
+	if err := cfg.Load(ctx, config.LoadOverride(true), config.LoadAppend(true)); err != nil {
 		t.Fatal(err)
 	}
 
@@ -42,7 +41,7 @@ func TestLoad(t *testing.T) {
 	os.Setenv("MAP_STRING", "key1=val1,key2=val2")
 	os.Setenv("MAP_INT", "key1=1,key2=2")
 
-	if err := cfg.Load(ctx); err != nil {
+	if err := cfg.Load(ctx, config.LoadOverride(true), config.LoadAppend(true)); err != nil {
 		t.Fatal(err)
 	}
 	if conf.StringValue != "STRING_VALUE" {
@@ -67,10 +66,11 @@ func TestLoad(t *testing.T) {
 
 	t.Logf("cfg %#+v", conf)
 }
+
 func TestSave(t *testing.T) {
 	ctx := context.Background()
 	conf := &Config{StringValue: "MICRO_CONFIG_ENV"}
-	cfg := env.NewConfig(config.Struct(conf))
+	cfg := NewConfig(config.Struct(conf))
 
 	if err := cfg.Init(); err != nil {
 		t.Fatal(err)
@@ -102,7 +102,5 @@ func TestSave(t *testing.T) {
 		if v, ok := os.LookupEnv("STRING_VALUE"); ok {
 			t.Fatalf("env value %s=%s set", tv, v)
 		}
-
 	}
-
 }

go.mod

@@ -1,8 +1,8 @@
-module github.com/unistack-org/micro-config-env/v3
+module go.unistack.org/micro-config-env/v3
 
 go 1.16
 
 require (
 	github.com/imdario/mergo v0.3.12
-	github.com/unistack-org/micro/v3 v3.3.17
+	go.unistack.org/micro/v3 v3.8.5
 )

go.sum

@@ -1,18 +1,28 @@
-github.com/dgrijalva/jwt-go v3.2.0+incompatible/go.mod h1:E3ru+11k8xSBh+hMPgOLZmtrrCbhqsmaPHjLKYnJCaQ=
 github.com/ef-ds/deque v1.0.4/go.mod h1:gXDnTC3yqvBcHbq2lcExjtAcVrOnJCbMcZXmuj8Z4tg=
-github.com/google/uuid v1.2.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
+github.com/golang-jwt/jwt/v4 v4.1.0/go.mod h1:/xlHOz8bRuivTWchD4jCa+NbatV+wEUSzwAxVc6locg=
+github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
+github.com/google/go-cmp v0.5.5 h1:Khx7svrCpmxxtHBq5j2mp/xVjsi8hQMfNLvJFAlrGgU=
+github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/imdario/mergo v0.3.12 h1:b6R2BslTbIEToALKP7LxUvijTsNI9TAe80pLWN2g/HU=
 github.com/imdario/mergo v0.3.12/go.mod h1:jmQim1M+e3UYxmgPu/WyfjB3N3VflVyUjjjwH0dnCYA=
 github.com/patrickmn/go-cache v2.1.0+incompatible/go.mod h1:3Qf8kWWT7OJRJbdiICTKqZju1ZixQ/KpMGzzAfe6+WQ=
-github.com/silas/dag v0.0.0-20210121180416-41cf55125c34/go.mod h1:7RTUFBdIRC9nZ7/3RyRNH1bdqIShrDejd1YbLwgPS+I=
-github.com/unistack-org/micro/v3 v3.3.17 h1:WcyS7InP0DlS/JpRQGLh5sG6VstkdHJbgpMp+gmHmwg=
-github.com/unistack-org/micro/v3 v3.3.17/go.mod h1:022EOEZZ789hZY3yB5ZSMXU6jLiadBgcNB/cpediV3c=
-golang.org/x/net v0.0.0-20210423184538-5f58ad60dda6/go.mod h1:OJAsFXCWl8Ukc7SiCT/9KSuxbyM7479/AVlXFRxuMCk=
+github.com/silas/dag v0.0.0-20210626123444-3804bac2d6d4/go.mod h1:7RTUFBdIRC9nZ7/3RyRNH1bdqIShrDejd1YbLwgPS+I=
+go.unistack.org/micro-proto/v3 v3.1.0 h1:q39FwjFiRZn+Ux/tt+d3bJTmDtsQQWa+3SLYVo1vLfA=
+go.unistack.org/micro-proto/v3 v3.1.0/go.mod h1:DpRhYCBXlmSJ/AAXTmntvlh7kQkYU6eFvlmYAx4BQS8=
+go.unistack.org/micro/v3 v3.8.5 h1:DIYWRsQF+NPhKZP45sCtNsUhaRw6u2+Ps7U+pKU7i3s=
+go.unistack.org/micro/v3 v3.8.5/go.mod h1:KMMmOmbgo/D52/rCAbqeKbBsgEEbSKM69he54J3ZIuA=
+golang.org/x/net v0.0.0-20210928044308-7d9f5e0b762b/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 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/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/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v2 v2.3.0 h1:clyUAQHOM3G0M3f5vQj7LuJrETvjVot3Z5el9nffUtU=
 gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=

watcher.go

@@ -0,0 +1,82 @@
+package env
+
+import (
+	"reflect"
+
+	"go.unistack.org/micro/v3/config"
+	"go.unistack.org/micro/v3/util/jitter"
+	rutil "go.unistack.org/micro/v3/util/reflect"
+)
+
+type envWatcher struct {
+	opts  config.Options
+	wopts config.WatchOptions
+	done  chan struct{}
+	vchan chan map[string]interface{}
+	echan chan error
+}
+
+func (w *envWatcher) 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 {
+				err = fillValues(w.opts.Context, reflect.ValueOf(dst), w.opts.StructTag)
+			}
+			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 *envWatcher) 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 *envWatcher) Stop() error {
+	close(w.done)
+	return nil
+}