hotfix (#186)

## Pull Request template
Please, go through these steps before clicking submit on this PR.

1. Give a descriptive title to your PR.
2. Provide a description of your changes.
3. Make sure you have some relevant tests.
4. Put `closes #XXXX` in your comment to auto-close the issue that your PR fixes (if applicable).

**PLEASE REMOVE THIS TEMPLATE BEFORE SUBMITTING**

Co-authored-by: Gorbunov Kirill Andreevich <kgorbunov@mtsbank.ru>
Reviewed-on: #186
Co-authored-by: Кирилл Горбунов <kirya_gorbunov_2015@mail.ru>
Co-committed-by: Кирилл Горбунов <kirya_gorbunov_2015@mail.ru>

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,24 @@
+---
+name: Bug report
+about: For reporting bugs in go-micro
+title: "[BUG]"
+labels: ''
+assignees: ''
+
+---
+
+**Describe the bug**
+
+1. What are you trying to do?
+2. What did you expect to happen?
+3. What happens instead?
+
+**How to reproduce the bug:**
+
+If possible, please include a minimal code snippet here.
+
+**Environment:**
+Go Version: please paste `go version` output here
+```
+please paste `go env` output here
+```

.github/ISSUE_TEMPLATE/feature-request---enhancement.md

@@ -0,0 +1,17 @@
+---
+name: Feature request / Enhancement
+about: If you have a need not served by go-micro
+title: "[FEATURE]"
+labels: ''
+assignees: ''
+
+---
+
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+
+**Additional context**
+Add any other context or screenshots about the feature request here.

.github/ISSUE_TEMPLATE/question.md

@@ -0,0 +1,14 @@
+---
+name: Question
+about: Ask a question about go-micro
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+Before asking, please check if your question has already been answered: 
+
+1. Check the documentation - https://micro.mu/docs/
+2. Check the examples and plugins - https://github.com/micro/examples & https://github.com/micro/go-plugins
+3. Search existing issues

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,9 @@
+## Pull Request template
+Please, go through these steps before clicking submit on this PR.
+
+1. Give a descriptive title to your PR.
+2. Provide a description of your changes.
+3. Make sure you have some relevant tests.
+4. Put `closes #XXXX` in your comment to auto-close the issue that your PR fixes (if applicable).
+
+**PLEASE REMOVE THIS TEMPLATE BEFORE SUBMITTING**

.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/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

@@ -0,0 +1,47 @@
+name: build
+on:
+ push:
+    branches:
+    - master
+    - v3
+jobs:
+  test:
+    name: test
+    runs-on: ubuntu-latest
+    steps:
+    - name: setup
+      uses: actions/setup-go@v3
+      with:
+        go-version: 1.17
+    - name: checkout
+      uses: actions/checkout@v3
+    - name: cache
+      uses: actions/cache@v3
+      with:
+        path: ~/go/pkg/mod
+        key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
+        restore-keys: ${{ runner.os }}-go-
+    - name: deps
+      run: go get -v -t -d ./...
+    - name: test
+      env:
+        INTEGRATION_TESTS: yes
+      run: go test -mod readonly -v ./...
+  lint:
+    name: lint
+    runs-on: ubuntu-latest
+    steps:
+      - name: checkout
+        uses: actions/checkout@v3
+      - name: lint
+        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.
+          version: v1.30
+          # Optional: working directory, useful for monorepos
+          # working-directory: somedir
+          # Optional: golangci-lint command line arguments.
+          # args: --issues-exit-code=0
+          # Optional: show only new issues if it's a pull request. The default value is `false`.
+          # only-new-issues: true

.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

@@ -0,0 +1,47 @@
+name: prbuild
+on:
+  pull_request:
+    branches:
+    - master
+    - v3
+jobs:
+  test:
+    name: test
+    runs-on: ubuntu-latest
+    steps:
+    - name: setup
+      uses: actions/setup-go@v3
+      with:
+        go-version: 1.17
+    - name: checkout
+      uses: actions/checkout@v3
+    - name: cache
+      uses: actions/cache@v3
+      with:
+        path: ~/go/pkg/mod
+        key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
+        restore-keys: ${{ runner.os }}-go-
+    - name: deps
+      run: go get -v -t -d ./...
+    - name: test
+      env:
+        INTEGRATION_TESTS: yes
+      run: go test -mod readonly -v ./...
+  lint:
+    name: lint
+    runs-on: ubuntu-latest
+    steps:
+      - name: checkout
+        uses: actions/checkout@v3
+      - name: lint
+        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.
+          version: v1.30
+          # Optional: working directory, useful for monorepos
+          # working-directory: somedir
+          # Optional: golangci-lint command line arguments.
+          # args: --issues-exit-code=0
+          # Optional: show only new issues if it's a pull request. The default value is `false`.
+          # only-new-issues: true

.gitignore

@@ -0,0 +1,24 @@
+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+bin
+
+# Test binary, built with `go test -c`
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out
+
+# Dependency directories (remove the comment below to include it)
+# vendor/
+
+# Go workspace file
+go.work
+
+# General
+.DS_Store
+.idea
+.vscode

.golangci.yml

@@ -0,0 +1,44 @@
+run:
+  concurrency: 4
+  deadline: 5m
+  issues-exit-code: 1
+  tests: true
+
+linters-settings:
+  govet:
+    check-shadowing: true
+    enable:
+      - fieldalignment
+
+linters:
+  enable:
+    - govet
+    - deadcode
+    - errcheck
+    - govet
+    - ineffassign
+    - staticcheck
+    - structcheck
+    - typecheck
+    - unused
+    - varcheck
+    - bodyclose
+    - gci
+    - goconst
+    - gocritic
+    - gosimple
+    - gofmt
+    - gofumpt
+    - goimports
+    - golint
+    - gosec
+    - makezero
+    - misspell
+    - nakedret
+    - nestif
+    - nilerr
+    - noctx
+    - prealloc
+    - unconvert
+    - unparam
+  disable-all: false

.synced

@@ -0,0 +1 @@
+7e753b1f84b06797ce8c4be8e4b1941b45f8bbb7

LICENSE

@@ -0,0 +1,192 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   Copyright 2015-2020 Asim Aslam.
+   Copyright 2019-2020 Unistack LLC.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.

README.md

@@ -1,6 +1,6 @@
 # HTTP Server
 
-The HTTP Server is a go-micro.Server. It's a partial implementation which strips out codecs, transports, etc but enables you
+The HTTP Server is a go-micro.Server. It's a partial implementation which strips out codecs, transports, etc but enables you 
 to create a HTTP Server that could potentially be used for REST based API services.
 
 ## Usage
@@ -9,8 +9,8 @@ to create a HTTP Server that could potentially be used for REST based API servic
 import (
 	"net/http"
 
-	"github.com/micro/go-micro/server"
-	httpServer "github.com/micro/go-plugins/server/http"
+	"go.unistack.org/micro/v4/server"
+	httpServer "go.unistack.org/micro-server-http/v4"
 )
 
 func main() {
@@ -37,9 +37,9 @@ Or as part of a service
 import (
 	"net/http"
 
-	"github.com/micro/go-micro"
-	"github.com/micro/go-micro/server"
-	httpServer "github.com/micro/go-plugins/server/http"
+	"go.unistack.org/micro/v4"
+	"go.unistack.org/micro/v4/server"
+	httpServer "go.unistack.org/micro-server-http/v4"
 )
 
 func main() {

buffer.go

@@ -1,14 +0,0 @@
-package http
-
-import (
-	"bytes"
-)
-
-type buffer struct {
-	*bytes.Buffer
-}
-
-func (b *buffer) Close() error {
-	b.Buffer.Reset()
-	return nil
-}

extractor.go

@@ -1,161 +0,0 @@
-package http
-
-import (
-	"fmt"
-	"reflect"
-	"strconv"
-	"strings"
-
-	"github.com/micro/go-micro/registry"
-	"github.com/micro/go-micro/server"
-	"github.com/micro/go-micro/util/addr"
-)
-
-func serviceDef(opts server.Options) *registry.Service {
-	var advt, host string
-	var port int
-
-	if len(opts.Advertise) > 0 {
-		advt = opts.Advertise
-	} else {
-		advt = opts.Address
-	}
-
-	parts := strings.Split(advt, ":")
-	if len(parts) > 1 {
-		host = strings.Join(parts[:len(parts)-1], ":")
-		port, _ = strconv.Atoi(parts[len(parts)-1])
-	} else {
-		host = parts[0]
-	}
-
-	addr, err := addr.Extract(host)
-	if err != nil {
-		addr = host
-	}
-
-	node := &registry.Node{
-		Id:       opts.Name + "-" + opts.Id,
-		Address:  fmt.Sprintf("%s:%d", addr, port),
-		Metadata: opts.Metadata,
-	}
-
-	node.Metadata["server"] = "http"
-	node.Metadata["broker"] = opts.Broker.String()
-	node.Metadata["registry"] = opts.Registry.String()
-	node.Metadata["protocol"] = "http"
-
-	return &registry.Service{
-		Name:    opts.Name,
-		Version: opts.Version,
-		Nodes:   []*registry.Node{node},
-	}
-}
-
-func extractValue(v reflect.Type, d int) *registry.Value {
-	if d == 3 {
-		return nil
-	}
-	if v == nil {
-		return nil
-	}
-
-	if v.Kind() == reflect.Ptr {
-		v = v.Elem()
-	}
-
-	arg := &registry.Value{
-		Name: v.Name(),
-		Type: v.Name(),
-	}
-
-	switch v.Kind() {
-	case reflect.Struct:
-		for i := 0; i < v.NumField(); i++ {
-			f := v.Field(i)
-			val := extractValue(f.Type, d+1)
-			if val == nil {
-				continue
-			}
-
-			// if we can find a json tag use it
-			if tags := f.Tag.Get("json"); len(tags) > 0 {
-				parts := strings.Split(tags, ",")
-				val.Name = parts[0]
-			}
-
-			// if there's no name default it
-			if len(val.Name) == 0 {
-				val.Name = v.Field(i).Name
-			}
-
-			arg.Values = append(arg.Values, val)
-		}
-	case reflect.Slice:
-		p := v.Elem()
-		if p.Kind() == reflect.Ptr {
-			p = p.Elem()
-		}
-		arg.Type = "[]" + p.Name()
-		val := extractValue(v.Elem(), d+1)
-		if val != nil {
-			arg.Values = append(arg.Values, val)
-		}
-	}
-
-	return arg
-}
-
-func extractEndpoint(method reflect.Method) *registry.Endpoint {
-	if method.PkgPath != "" {
-		return nil
-	}
-
-	var rspType, reqType reflect.Type
-	var stream bool
-	mt := method.Type
-
-	switch mt.NumIn() {
-	case 3:
-		reqType = mt.In(1)
-		rspType = mt.In(2)
-	case 4:
-		reqType = mt.In(2)
-		rspType = mt.In(3)
-	default:
-		return nil
-	}
-
-	// are we dealing with a stream?
-	switch rspType.Kind() {
-	case reflect.Func, reflect.Interface:
-		stream = true
-	}
-
-	request := extractValue(reqType, 0)
-	response := extractValue(rspType, 0)
-
-	return &registry.Endpoint{
-		Name:     method.Name,
-		Request:  request,
-		Response: response,
-		Metadata: map[string]string{
-			"stream": fmt.Sprintf("%v", stream),
-		},
-	}
-}
-
-func extractSubValue(typ reflect.Type) *registry.Value {
-	var reqType reflect.Type
-	switch typ.NumIn() {
-	case 1:
-		reqType = typ.In(0)
-	case 2:
-		reqType = typ.In(1)
-	case 3:
-		reqType = typ.In(2)
-	default:
-		return nil
-	}
-	return extractValue(reqType, 0)
-}

go.mod

@@ -1,5 +1,25 @@
-module github.com/micro/go-plugins/server/http
+module go.unistack.org/micro-server-http/v4
 
-go 1.13
+go 1.19
 
-require github.com/micro/go-micro v1.18.0
+require (
+	go.unistack.org/micro-codec-yaml/v4 v4.0.0
+	go.unistack.org/micro-proto/v4 v4.0.1
+	go.unistack.org/micro/v4 v4.0.17
+	go.unistack.org/protoc-gen-go-micro/v4 v4.0.13
+	golang.org/x/net v0.22.0
+)
+
+require (
+	github.com/fatih/structtag v1.2.0 // indirect
+	github.com/golang/protobuf v1.5.4 // indirect
+	github.com/google/gnostic v0.7.0 // indirect
+	github.com/google/gnostic-models v0.6.9-0.20230804172637-c7be7c783f49 // indirect
+	golang.org/x/mod v0.16.0 // indirect
+	golang.org/x/sys v0.18.0 // indirect
+	golang.org/x/tools v0.19.0 // indirect
+	google.golang.org/protobuf v1.33.0 // indirect
+	gopkg.in/yaml.v2 v2.4.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+	sigs.k8s.io/yaml v1.4.0 // indirect
+)

handler.go

@@ -1,28 +1,598 @@
 package http
 
 import (
-	"github.com/micro/go-micro/registry"
-	"github.com/micro/go-micro/server"
+	"context"
+	"fmt"
+	"io"
+	"net/http"
+	"reflect"
+	"strings"
+	"sync"
+
+	"go.unistack.org/micro/v4/errors"
+	"go.unistack.org/micro/v4/logger"
+	"go.unistack.org/micro/v4/metadata"
+	"go.unistack.org/micro/v4/register"
+	"go.unistack.org/micro/v4/server"
+	rhttp "go.unistack.org/micro/v4/util/http"
+	rflutil "go.unistack.org/micro/v4/util/reflect"
 )
 
+var (
+	DefaultErrorHandler = func(ctx context.Context, s interface{}, w http.ResponseWriter, r *http.Request, err error, status int) {
+		w.WriteHeader(status)
+		if _, cerr := w.Write([]byte(err.Error())); cerr != nil {
+			logger.DefaultLogger.Error(ctx, fmt.Sprintf("write failed: %v", cerr))
+		}
+	}
+	DefaultContentType = "application/json"
+)
+
+type patHandler struct {
+	mtype *methodType
+	rcvr  reflect.Value
+	name  string
+}
+
 type httpHandler struct {
-	opts server.HandlerOptions
-	eps  []*registry.Endpoint
-	hd   interface{}
+	opts     server.HandleOptions
+	hd       interface{}
+	handlers *rhttp.Trie
+	name     string
+	eps      []*register.Endpoint
+	sopts    server.Options
+	sync.RWMutex
 }
 
 func (h *httpHandler) Name() string {
-	return "handler"
+	return h.name
 }
 
 func (h *httpHandler) Handler() interface{} {
 	return h.hd
 }
 
-func (h *httpHandler) Endpoints() []*registry.Endpoint {
+func (h *httpHandler) Endpoints() []*register.Endpoint {
 	return h.eps
 }
 
-func (h *httpHandler) Options() server.HandlerOptions {
+func (h *httpHandler) Options() server.HandleOptions {
 	return h.opts
 }
+
+func (h *Server) HTTPHandlerFunc(handler interface{}) (http.HandlerFunc, error) {
+	if handler == nil {
+		return nil, fmt.Errorf("invalid handler specified: %v", handler)
+	}
+
+	rtype := reflect.TypeOf(handler)
+	if rtype.NumIn() != 3 {
+		return nil, fmt.Errorf("invalid handler, NumIn != 3: %v", rtype.NumIn())
+	}
+
+	argType := rtype.In(1)
+	replyType := rtype.In(2)
+
+	// First arg need not be a pointer.
+	if !isExportedOrBuiltinType(argType) {
+		return nil, fmt.Errorf("invalid handler, argument type not exported: %v", argType)
+	}
+
+	if replyType.Kind() != reflect.Ptr {
+		return nil, fmt.Errorf("invalid handler, reply type not a pointer: %v", replyType)
+	}
+
+	// Reply type must be exported.
+	if !isExportedOrBuiltinType(replyType) {
+		return nil, fmt.Errorf("invalid handler, reply type not exported: %v", replyType)
+	}
+
+	if rtype.NumOut() != 1 {
+		return nil, fmt.Errorf("invalid handler, has wrong number of outs: %v", rtype.NumOut())
+	}
+
+	// The return type of the method must be error.
+	if returnType := rtype.Out(0); returnType != typeOfError {
+		return nil, fmt.Errorf("invalid handler, returns %v not error", returnType.String())
+	}
+
+	return func(w http.ResponseWriter, r *http.Request) {
+		ct := DefaultContentType
+		if htype := r.Header.Get(metadata.HeaderContentType); htype != "" {
+			ct = htype
+		}
+
+		ctx := context.WithValue(r.Context(), rspCodeKey{}, &rspCodeVal{})
+		ctx = context.WithValue(ctx, rspHeaderKey{}, &rspHeaderVal{})
+		md, ok := metadata.FromIncomingContext(ctx)
+		if !ok {
+			md = metadata.New(len(r.Header) + 8)
+		}
+		for k, v := range r.Header {
+			md[k] = v[0]
+		}
+		md["RemoteAddr"] = r.RemoteAddr
+		md["Method"] = r.Method
+		md["URL"] = r.URL.String()
+		md["Proto"] = r.Proto
+		md["Content-Length"] = fmt.Sprintf("%d", r.ContentLength)
+		md["Transfer-Encoding"] = r.TransferEncoding[0]
+		md["Host"] = r.Host
+		md["RequestURI"] = r.RequestURI
+		if r.TLS != nil {
+			md["TLS"] = "true"
+			md["TLS-ALPN"] = r.TLS.NegotiatedProtocol
+			md["TLS-ServerName"] = r.TLS.ServerName
+		}
+
+		ctx = metadata.NewIncomingContext(ctx, md)
+
+		path := r.URL.Path
+
+		if r.Body != nil {
+			defer r.Body.Close()
+		}
+
+		matches := make(map[string]interface{})
+		var match bool
+		var hldr *patHandler
+		var handler *httpHandler
+
+		for _, shdlr := range h.handlers {
+			hdlr := shdlr.(*httpHandler)
+			fh, mp, err := hdlr.handlers.Search(r.Method, path)
+			if err == nil {
+				match = true
+				for k, v := range mp {
+					matches[k] = v
+				}
+				hldr = fh.(*patHandler)
+				handler = hdlr
+				break
+			} else if err == rhttp.ErrMethodNotAllowed && !h.registerRPC {
+				w.WriteHeader(http.StatusMethodNotAllowed)
+				_, _ = w.Write([]byte("not matching route found"))
+				return
+			}
+		}
+
+		if !match && h.registerRPC {
+			microMethod, mok := md.Get(metadata.HeaderEndpoint)
+			if mok {
+				serviceMethod := strings.Split(microMethod, ".")
+				if len(serviceMethod) == 2 {
+					if shdlr, ok := h.handlers[serviceMethod[0]]; ok {
+						hdlr := shdlr.(*httpHandler)
+						fh, mp, err := hdlr.handlers.Search(http.MethodPost, "/"+microMethod)
+						if err == nil {
+							match = true
+							for k, v := range mp {
+								matches[k] = v
+							}
+							hldr = fh.(*patHandler)
+							handler = hdlr
+						}
+					}
+				}
+			}
+		}
+
+		// get fields from url values
+		if len(r.URL.RawQuery) > 0 {
+			umd, cerr := rflutil.URLMap(r.URL.RawQuery)
+			if cerr != nil {
+				w.WriteHeader(http.StatusInternalServerError)
+				_, _ = w.Write([]byte(cerr.Error()))
+				return
+			}
+			for k, v := range umd {
+				matches[k] = v
+			}
+		}
+
+		cf, err := h.newCodec(ct)
+		if err != nil {
+			w.WriteHeader(http.StatusBadRequest)
+			_, _ = w.Write([]byte(err.Error()))
+			return
+		}
+
+		var argv, replyv reflect.Value
+
+		// Decode the argument value.
+		argIsValue := false // if true, need to indirect before calling.
+		if hldr.mtype.ArgType.Kind() == reflect.Ptr {
+			argv = reflect.New(hldr.mtype.ArgType.Elem())
+		} else {
+			argv = reflect.New(hldr.mtype.ArgType)
+			argIsValue = true
+		}
+
+		if argIsValue {
+			argv = argv.Elem()
+		}
+
+		// reply value
+		replyv = reflect.New(hldr.mtype.ReplyType.Elem())
+
+		function := hldr.mtype.method.Func
+		var returnValues []reflect.Value
+
+		if r.Body != nil {
+			var buf []byte
+			buf, err = io.ReadAll(r.Body)
+			if err != nil && err != io.EOF {
+				h.errorHandler(ctx, handler, w, r, err, http.StatusInternalServerError)
+				return
+			}
+
+			if err = cf.Unmarshal(buf, argv.Interface()); err != nil {
+				h.errorHandler(ctx, handler, w, r, err, http.StatusBadRequest)
+				return
+			}
+		}
+
+		matches = rflutil.FlattenMap(matches)
+		if err = rflutil.Merge(argv.Interface(), matches, rflutil.SliceAppend(true), rflutil.Tags([]string{"protobuf", "json"})); err != nil {
+			h.errorHandler(ctx, handler, w, r, err, http.StatusBadRequest)
+			return
+		}
+
+		hr := &rpcRequest{
+			codec:       cf,
+			service:     handler.sopts.Name,
+			contentType: ct,
+			method:      fmt.Sprintf("%s.%s", hldr.name, hldr.mtype.method.Name),
+			endpoint:    fmt.Sprintf("%s.%s", hldr.name, hldr.mtype.method.Name),
+			payload:     argv.Interface(),
+			header:      md,
+		}
+
+		// define the handler func
+		fn := func(fctx context.Context, req server.Request, rsp interface{}) (err error) {
+			returnValues = function.Call([]reflect.Value{hldr.rcvr, hldr.mtype.prepareContext(fctx), argv, reflect.ValueOf(rsp)})
+
+			// The return value for the method is an error.
+			if rerr := returnValues[0].Interface(); rerr != nil {
+				err = rerr.(error)
+			}
+
+			md, ok := metadata.FromOutgoingContext(ctx)
+			if !ok {
+				md = metadata.New(0)
+			}
+			if nmd, ok := metadata.FromOutgoingContext(fctx); ok {
+				for k, v := range nmd {
+					md[k] = v
+				}
+			}
+
+			return err
+		}
+
+		// wrap the handler func
+		// for i := len(handler.sopts.Hooks); i > 0; i-- {
+		//	fn = handler.sopts.Hooks[i-1](fn)
+		// }
+
+		if ct == "application/x-www-form-urlencoded" {
+			cf, err = h.newCodec(DefaultContentType)
+			if err != nil {
+				h.errorHandler(ctx, handler, w, r, err, http.StatusInternalServerError)
+				return
+			}
+			ct = DefaultContentType
+		}
+
+		scode := int(200)
+		appErr := fn(ctx, hr, replyv.Interface())
+
+		w.Header().Set(metadata.HeaderContentType, ct)
+		if md, ok := metadata.FromOutgoingContext(ctx); ok {
+			for k, v := range md {
+				w.Header()[k] = []string{v}
+			}
+		}
+		if md := getRspHeader(ctx); md != nil {
+			for k, v := range md {
+				w.Header()[k] = v
+			}
+		}
+		if nct := w.Header().Get(metadata.HeaderContentType); nct != ct {
+			if cf, err = h.newCodec(nct); err != nil {
+				h.errorHandler(ctx, nil, w, r, err, http.StatusBadRequest)
+				return
+			}
+		}
+
+		var buf []byte
+		if appErr != nil {
+			switch verr := appErr.(type) {
+			case *errors.Error:
+				scode = int(verr.Code)
+				buf, err = cf.Marshal(verr)
+			case *Error:
+				buf, err = cf.Marshal(verr.err)
+			default:
+				buf, err = cf.Marshal(appErr)
+			}
+		} else {
+			buf, err = cf.Marshal(replyv.Interface())
+		}
+
+		if err != nil && handler.sopts.Logger.V(logger.ErrorLevel) {
+			handler.sopts.Logger.Error(handler.sopts.Context, fmt.Sprintf("handler err: %v", err))
+			return
+		}
+
+		if nscode := GetRspCode(ctx); nscode != 0 {
+			scode = nscode
+		}
+		w.WriteHeader(scode)
+
+		if _, cerr := w.Write(buf); cerr != nil {
+			handler.sopts.Logger.Error(ctx, fmt.Sprintf("write failed: %v", cerr))
+		}
+	}, nil
+}
+
+func (h *Server) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	ct := DefaultContentType
+	if htype := r.Header.Get(metadata.HeaderContentType); htype != "" {
+		ct = htype
+	}
+
+	ctx := context.WithValue(r.Context(), rspCodeKey{}, &rspCodeVal{})
+	ctx = context.WithValue(ctx, rspHeaderKey{}, &rspHeaderVal{})
+	md, ok := metadata.FromIncomingContext(ctx)
+	if !ok {
+		md = metadata.New(len(r.Header) + 8)
+	}
+	for k, v := range r.Header {
+		md[k] = v[0]
+	}
+	md["RemoteAddr"] = r.RemoteAddr
+	if r.TLS != nil {
+		md["Scheme"] = "https"
+	} else {
+		md["Scheme"] = "http"
+	}
+	md["Method"] = r.Method
+	md["URL"] = r.URL.String()
+	md["Proto"] = r.Proto
+	md["Content-Length"] = fmt.Sprintf("%d", r.ContentLength)
+	if len(r.TransferEncoding) > 0 {
+		md["Transfer-Encoding"] = r.TransferEncoding[0]
+	}
+	md["Host"] = r.Host
+	md["RequestURI"] = r.RequestURI
+	ctx = metadata.NewIncomingContext(ctx, md)
+
+	path := r.URL.Path
+	if !strings.HasPrefix(path, "/") {
+		h.errorHandler(ctx, nil, w, r, fmt.Errorf("path must starts with /"), http.StatusBadRequest)
+		return
+	}
+
+	matches := make(map[string]interface{})
+
+	var match bool
+	var hldr *patHandler
+	var handler *httpHandler
+
+	for _, shdlr := range h.handlers {
+		hdlr := shdlr.(*httpHandler)
+		fh, mp, err := hdlr.handlers.Search(r.Method, path)
+		if err == nil {
+			match = true
+			for k, v := range mp {
+				matches[k] = v
+			}
+			hldr = fh.(*patHandler)
+			handler = hdlr
+			break
+		} else if err == rhttp.ErrMethodNotAllowed && !h.registerRPC {
+			h.errorHandler(ctx, nil, w, r, fmt.Errorf("not matching route found"), http.StatusMethodNotAllowed)
+			return
+		}
+	}
+
+	if !match && h.registerRPC {
+		microMethod, mok := md.Get(metadata.HeaderEndpoint)
+		if mok {
+			serviceMethod := strings.Split(microMethod, ".")
+			if len(serviceMethod) == 2 {
+				if shdlr, ok := h.handlers[serviceMethod[0]]; ok {
+					hdlr := shdlr.(*httpHandler)
+					fh, mp, err := hdlr.handlers.Search(http.MethodPost, "/"+microMethod)
+					if err == nil {
+						match = true
+						for k, v := range mp {
+							matches[k] = v
+						}
+						hldr = fh.(*patHandler)
+						handler = hdlr
+					}
+				}
+			}
+		}
+	}
+
+	if !match && h.hd != nil {
+		if hdlr, ok := h.hd.(http.Handler); ok {
+			hdlr.ServeHTTP(w, r)
+			return
+		}
+	} else if !match {
+		// check for http.HandlerFunc handlers
+		if ph, _, err := h.pathHandlers.Search(r.Method, r.URL.Path); err == nil {
+			ph.(http.HandlerFunc)(w, r)
+			return
+		}
+		h.errorHandler(ctx, nil, w, r, fmt.Errorf("not matching route found"), http.StatusNotFound)
+		return
+	}
+
+	// get fields from url values
+	if len(r.URL.RawQuery) > 0 {
+		umd, cerr := rflutil.URLMap(r.URL.RawQuery)
+		if cerr != nil {
+			h.errorHandler(ctx, handler, w, r, cerr, http.StatusBadRequest)
+			return
+		}
+		for k, v := range umd {
+			matches[k] = v
+		}
+	}
+
+	if r.Body != nil {
+		defer r.Body.Close()
+	}
+
+	cf, err := h.newCodec(ct)
+	if err != nil {
+		h.errorHandler(ctx, nil, w, r, err, http.StatusBadRequest)
+		return
+	}
+
+	var argv, replyv reflect.Value
+
+	// Decode the argument value.
+	argIsValue := false // if true, need to indirect before calling.
+	if hldr.mtype.ArgType.Kind() == reflect.Ptr {
+		argv = reflect.New(hldr.mtype.ArgType.Elem())
+	} else {
+		argv = reflect.New(hldr.mtype.ArgType)
+		argIsValue = true
+	}
+
+	if argIsValue {
+		argv = argv.Elem()
+	}
+
+	// reply value
+	replyv = reflect.New(hldr.mtype.ReplyType.Elem())
+
+	function := hldr.mtype.method.Func
+	var returnValues []reflect.Value
+
+	if r.Body != nil {
+		var buf []byte
+		buf, err = io.ReadAll(r.Body)
+		if err != nil && err != io.EOF {
+			h.errorHandler(ctx, handler, w, r, err, http.StatusInternalServerError)
+			return
+		}
+
+		if err = cf.Unmarshal(buf, argv.Interface()); err != nil {
+			h.errorHandler(ctx, handler, w, r, err, http.StatusBadRequest)
+			return
+		}
+	}
+
+	if len(matches) > 0 {
+		matches = rflutil.FlattenMap(matches)
+		if err = rflutil.Merge(argv.Interface(), matches, rflutil.SliceAppend(true), rflutil.Tags([]string{"protobuf", "json"})); err != nil {
+			h.errorHandler(ctx, handler, w, r, err, http.StatusBadRequest)
+			return
+		}
+	}
+
+	hr := &rpcRequest{
+		codec:       cf,
+		service:     handler.sopts.Name,
+		contentType: ct,
+		method:      fmt.Sprintf("%s.%s", hldr.name, hldr.mtype.method.Name),
+		endpoint:    fmt.Sprintf("%s.%s", hldr.name, hldr.mtype.method.Name),
+		payload:     argv.Interface(),
+		header:      md,
+	}
+
+	// define the handler func
+	fn := func(fctx context.Context, req server.Request, rsp interface{}) (err error) {
+		returnValues = function.Call([]reflect.Value{hldr.rcvr, hldr.mtype.prepareContext(fctx), argv, reflect.ValueOf(rsp)})
+
+		// The return value for the method is an error.
+		if rerr := returnValues[0].Interface(); rerr != nil {
+			err = rerr.(error)
+		}
+
+		md, ok := metadata.FromOutgoingContext(ctx)
+		if !ok {
+			md = metadata.New(0)
+		}
+		if nmd, ok := metadata.FromOutgoingContext(fctx); ok {
+			for k, v := range nmd {
+				md[k] = v
+			}
+		}
+
+		return err
+	}
+
+	// wrap the handler func
+	// for i := len(handler.sopts.HdlrWrappers); i > 0; i-- {
+	//	fn = handler.sopts.HdlrWrappers[i-1](fn)
+	// }
+
+	if ct == "application/x-www-form-urlencoded" {
+		cf, err = h.newCodec(DefaultContentType)
+		if err != nil {
+			h.errorHandler(ctx, handler, w, r, err, http.StatusInternalServerError)
+			return
+		}
+		ct = DefaultContentType
+	}
+
+	scode := int(200)
+	appErr := fn(ctx, hr, replyv.Interface())
+
+	w.Header().Set(metadata.HeaderContentType, ct)
+	if md, ok := metadata.FromOutgoingContext(ctx); ok {
+		for k, v := range md {
+			w.Header()[k] = []string{v}
+		}
+	}
+	if md := getRspHeader(ctx); md != nil {
+		for k, v := range md {
+			for _, vv := range v {
+				w.Header().Add(k, vv)
+			}
+		}
+	}
+	if nct := w.Header().Get(metadata.HeaderContentType); nct != ct {
+		if cf, err = h.newCodec(nct); err != nil {
+			h.errorHandler(ctx, nil, w, r, err, http.StatusBadRequest)
+			return
+		}
+	}
+
+	var buf []byte
+	if appErr != nil {
+		switch verr := appErr.(type) {
+		case *errors.Error:
+			scode = int(verr.Code)
+			buf, err = cf.Marshal(verr)
+		case *Error:
+			buf, err = cf.Marshal(verr.err)
+		default:
+			buf, err = cf.Marshal(appErr)
+		}
+	} else {
+		buf, err = cf.Marshal(replyv.Interface())
+	}
+
+	if err != nil && handler.sopts.Logger.V(logger.ErrorLevel) {
+		handler.sopts.Logger.Error(handler.sopts.Context, fmt.Sprintf("handler err: %v", err))
+		return
+	}
+
+	if nscode := GetRspCode(ctx); nscode != 0 {
+		scode = nscode
+	}
+	w.WriteHeader(scode)
+
+	if _, cerr := w.Write(buf); cerr != nil {
+		handler.sopts.Logger.Error(ctx, fmt.Sprintf("write failed: %v", cerr))
+	}
+}

handler/generate.go

@@ -0,0 +1,12 @@
+package handler
+
+import (
+	// import required packages
+	_ "go.unistack.org/micro-proto/v4/openapiv3"
+)
+
+//go:generate sh -c "curl -L https://github.com/swagger-api/swagger-ui/archive/refs/tags/v4.18.3.zip -o - | bsdtar -C swagger-ui --strip-components=2 -xv swagger-ui-4.18.3/dist && rm swagger-ui/*.map swagger-ui/*-es-*.js swagger-ui/swagger-ui.js swagger-ui/swagger-initializer.js"
+
+//go:generate sh -c "protoc -I./ -I$(go list -f '{{ .Dir }}' -m go.unistack.org/micro-proto/v4) --go-micro_out='components=micro|http|server',standalone=false,debug=true,paths=source_relative:./ ./meter/meter.proto"
+
+//go:generate sh -c "protoc -I./ -I$(go list -f '{{ .Dir }}' -m go.unistack.org/micro-proto/v4) --go-micro_out='components=micro|http|server',standalone=false,debug=true,paths=source_relative:./ ./health/health.proto"

handler/health/health.go

@@ -0,0 +1,82 @@
+package health // import "go.unistack.org/micro-server-http/v4/handler/health"
+
+import (
+	"context"
+
+	codecpb "go.unistack.org/micro-proto/v4/codec"
+	"go.unistack.org/micro/v4/errors"
+)
+
+var _ HealthServiceServer = (*Handler)(nil)
+
+type Handler struct {
+	opts Options
+}
+
+type CheckFunc func(context.Context) error
+
+type Option func(*Options)
+
+type Options struct {
+	Version     string
+	Name        string
+	LiveChecks  []CheckFunc
+	ReadyChecks []CheckFunc
+}
+
+func LiveChecks(fns ...CheckFunc) Option {
+	return func(o *Options) {
+		o.LiveChecks = append(o.LiveChecks, fns...)
+	}
+}
+
+func ReadyChecks(fns ...CheckFunc) Option {
+	return func(o *Options) {
+		o.ReadyChecks = append(o.ReadyChecks, fns...)
+	}
+}
+
+func Name(name string) Option {
+	return func(o *Options) {
+		o.Name = name
+	}
+}
+
+func Version(version string) Option {
+	return func(o *Options) {
+		o.Version = version
+	}
+}
+
+func NewHandler(opts ...Option) *Handler {
+	options := Options{}
+	for _, o := range opts {
+		o(&options)
+	}
+	return &Handler{opts: options}
+}
+
+func (h *Handler) Live(ctx context.Context, req *codecpb.Frame, rsp *codecpb.Frame) error {
+	var err error
+	for _, fn := range h.opts.LiveChecks {
+		if err = fn(ctx); err != nil {
+			return errors.ServiceUnavailable(h.opts.Name, "%v", err)
+		}
+	}
+	return nil
+}
+
+func (h *Handler) Ready(ctx context.Context, req *codecpb.Frame, rsp *codecpb.Frame) error {
+	var err error
+	for _, fn := range h.opts.ReadyChecks {
+		if err = fn(ctx); err != nil {
+			return errors.ServiceUnavailable(h.opts.Name, "%v", err)
+		}
+	}
+	return nil
+}
+
+func (h *Handler) Version(ctx context.Context, req *codecpb.Frame, rsp *codecpb.Frame) error {
+	rsp.Data = []byte(h.opts.Version)
+	return nil
+}

handler/health/health.proto

@@ -0,0 +1,50 @@
+syntax = "proto3";
+
+package micro.server.http.v4.handler.health;
+option go_package = "go.unistack.org/micro-server-http/v4/handler/health;health";
+
+import "api/annotations.proto";
+import "openapiv3/annotations.proto";
+import "codec/frame.proto";
+
+service HealthService {
+	rpc Live(micro.codec.Frame) returns (micro.codec.Frame) {
+		option (micro.openapiv3.openapiv3_operation) = {
+      operation_id: "Live";
+      responses: {
+        default: {
+          reference: {
+            _ref: "micro.codec.Frame";
+          };
+        };
+      };
+    };
+		option (micro.api.http) = { get: "/live"; };
+  };
+	rpc Ready(micro.codec.Frame) returns (micro.codec.Frame) {
+		option (micro.openapiv3.openapiv3_operation) = {
+      operation_id: "Ready";
+      responses: {
+        default: {
+          reference: {
+            _ref: "micro.codec.Frame";
+          };
+        };
+      };
+    };
+		option (micro.api.http) = { get: "/ready"; };
+  };
+	rpc Version(micro.codec.Frame) returns (micro.codec.Frame) {
+		option (micro.openapiv3.openapiv3_operation) = {
+      operation_id: "Version";
+      responses: {
+        default: {
+          reference: {
+            _ref: "micro.codec.Frame";
+          };
+        };
+      };
+    };
+		option (micro.api.http) = { get: "/version"; };
+  };
+};

handler/health/health_micro.pb.go

@@ -0,0 +1,22 @@
+// Code generated by protoc-gen-go-micro. DO NOT EDIT.
+// versions:
+// - protoc-gen-go-micro v4.0.2
+// - protoc              v4.23.4
+// source: health/health.proto
+
+package health
+
+import (
+	context "context"
+	codec "go.unistack.org/micro-proto/v4/codec"
+)
+
+var (
+	HealthServiceName = "HealthService"
+)
+
+type HealthServiceServer interface {
+	Live(ctx context.Context, req *codec.Frame, rsp *codec.Frame) error
+	Ready(ctx context.Context, req *codec.Frame, rsp *codec.Frame) error
+	Version(ctx context.Context, req *codec.Frame, rsp *codec.Frame) error
+}

handler/health/health_micro_http.pb.go

@@ -0,0 +1,70 @@
+// Code generated by protoc-gen-go-micro. DO NOT EDIT.
+// protoc-gen-go-micro version: v4.0.2
+// source: health/health.proto
+
+package health
+
+import (
+	context "context"
+	codec "go.unistack.org/micro-proto/v4/codec"
+	v4 "go.unistack.org/micro-server-http/v4"
+	options "go.unistack.org/micro/v4/options"
+	server "go.unistack.org/micro/v4/server"
+)
+
+var (
+	HealthServiceServerEndpoints = []v4.EndpointMetadata{
+		{
+			Name:   "HealthService.Live",
+			Path:   "/live",
+			Method: "GET",
+			Body:   "",
+			Stream: false,
+		},
+		{
+			Name:   "HealthService.Ready",
+			Path:   "/ready",
+			Method: "GET",
+			Body:   "",
+			Stream: false,
+		},
+		{
+			Name:   "HealthService.Version",
+			Path:   "/version",
+			Method: "GET",
+			Body:   "",
+			Stream: false,
+		},
+	}
+)
+
+type healthServiceServer struct {
+	HealthServiceServer
+}
+
+func (h *healthServiceServer) Live(ctx context.Context, req *codec.Frame, rsp *codec.Frame) error {
+	return h.HealthServiceServer.Live(ctx, req, rsp)
+}
+
+func (h *healthServiceServer) Ready(ctx context.Context, req *codec.Frame, rsp *codec.Frame) error {
+	return h.HealthServiceServer.Ready(ctx, req, rsp)
+}
+
+func (h *healthServiceServer) Version(ctx context.Context, req *codec.Frame, rsp *codec.Frame) error {
+	return h.HealthServiceServer.Version(ctx, req, rsp)
+}
+
+func RegisterHealthServiceServer(s server.Server, sh HealthServiceServer, opts ...options.Option) error {
+	type healthService interface {
+		Live(ctx context.Context, req *codec.Frame, rsp *codec.Frame) error
+		Ready(ctx context.Context, req *codec.Frame, rsp *codec.Frame) error
+		Version(ctx context.Context, req *codec.Frame, rsp *codec.Frame) error
+	}
+	type HealthService struct {
+		healthService
+	}
+	h := &healthServiceServer{sh}
+	var nopts []options.Option
+	nopts = append(nopts, v4.HandlerEndpoints(HealthServiceServerEndpoints))
+	return s.Handle(&HealthService{h}, append(nopts, opts...)...)
+}

handler/meter/meter.go

@@ -0,0 +1,133 @@
+package meter // import "go.unistack.org/micro-server-http/v4/handler/meter"
+
+import (
+	"bytes"
+	"compress/gzip"
+	"context"
+	"io"
+	"strings"
+	"sync"
+
+	codecpb "go.unistack.org/micro-proto/v4/codec"
+	"go.unistack.org/micro/v4/logger"
+	"go.unistack.org/micro/v4/metadata"
+	"go.unistack.org/micro/v4/meter"
+	"go.unistack.org/micro/v4/options"
+)
+
+const (
+	contentEncodingHeader = "Content-Encoding"
+	acceptEncodingHeader  = "Accept-Encoding"
+)
+
+var gzipPool = sync.Pool{
+	New: func() interface{} {
+		return gzip.NewWriter(nil)
+	},
+}
+
+var bufPool = sync.Pool{
+	New: func() interface{} {
+		return bytes.NewBuffer(nil)
+	},
+}
+
+// guard to fail early
+var _ MeterServiceServer = (*Handler)(nil)
+
+type Handler struct {
+	opts Options
+}
+
+type Option func(*Options)
+
+type Options struct {
+	Meter           meter.Meter
+	Name            string
+	MeterOptions    []options.Option
+	DisableCompress bool
+}
+
+func Meter(m meter.Meter) Option {
+	return func(o *Options) {
+		o.Meter = m
+	}
+}
+
+func Name(name string) Option {
+	return func(o *Options) {
+		o.Name = name
+	}
+}
+
+func DisableCompress(g bool) Option {
+	return func(o *Options) {
+		o.DisableCompress = g
+	}
+}
+
+func MeterOptions(opts ...options.Option) Option {
+	return func(o *Options) {
+		o.MeterOptions = append(o.MeterOptions, opts...)
+	}
+}
+
+func NewOptions(opts ...Option) Options {
+	options := Options{Meter: meter.DefaultMeter, DisableCompress: false}
+	for _, o := range opts {
+		o(&options)
+	}
+	return options
+}
+
+func NewHandler(opts ...Option) *Handler {
+	options := NewOptions(opts...)
+	return &Handler{opts: options}
+}
+
+func (h *Handler) Metrics(ctx context.Context, req *codecpb.Frame, rsp *codecpb.Frame) error {
+	log, ok := logger.FromContext(ctx)
+	if !ok {
+		log = logger.DefaultLogger
+	}
+
+	buf := bufPool.Get().(*bytes.Buffer)
+	defer bufPool.Put(buf)
+	buf.Reset()
+
+	w := io.Writer(buf)
+
+	if md, ok := metadata.FromIncomingContext(ctx); gzipAccepted(md) && ok && !h.opts.DisableCompress {
+		omd, _ := metadata.FromOutgoingContext(ctx)
+		omd.Set(contentEncodingHeader, "gzip")
+		gz := gzipPool.Get().(*gzip.Writer)
+		defer gzipPool.Put(gz)
+
+		gz.Reset(w)
+		defer gz.Close()
+
+		w = gz
+		gz.Flush()
+	}
+
+	if err := h.opts.Meter.Write(w, h.opts.MeterOptions...); err != nil {
+		log.Error(ctx, "http/meter: write failed", err)
+		return nil
+	}
+
+	rsp.Data = buf.Bytes()
+
+	return nil
+}
+
+// gzipAccepted returns whether the client will accept gzip-encoded content.
+func gzipAccepted(md metadata.Metadata) bool {
+	a, ok := md.Get(acceptEncodingHeader)
+	if !ok {
+		return false
+	}
+	if strings.Contains(a, "gzip") {
+		return true
+	}
+	return false
+}

handler/meter/meter.proto

@@ -0,0 +1,24 @@
+syntax = "proto3";
+
+package micro.server.http.v4.handler.meter;
+option go_package = "go.unistack.org/micro-server-http/v4/handler/meter;meter";
+
+import "api/annotations.proto";
+import "openapiv3/annotations.proto";
+import "codec/frame.proto";
+
+service MeterService {
+	rpc Metrics(micro.codec.Frame) returns (micro.codec.Frame) {
+		option (micro.openapiv3.openapiv3_operation) = {
+      operation_id: "Metrics";
+      responses: {
+        default: {
+          reference: {
+            _ref: "micro.codec.Frame";
+          };
+        };
+      };
+    };
+		option (micro.api.http) = { get: "/metrics"; };
+  };
+};

handler/meter/meter_micro.pb.go

@@ -0,0 +1,20 @@
+// Code generated by protoc-gen-go-micro. DO NOT EDIT.
+// versions:
+// - protoc-gen-go-micro v4.0.2
+// - protoc              v4.23.4
+// source: meter/meter.proto
+
+package meter
+
+import (
+	context "context"
+	codec "go.unistack.org/micro-proto/v4/codec"
+)
+
+var (
+	MeterServiceName = "MeterService"
+)
+
+type MeterServiceServer interface {
+	Metrics(ctx context.Context, req *codec.Frame, rsp *codec.Frame) error
+}

handler/meter/meter_micro_http.pb.go

@@ -0,0 +1,46 @@
+// Code generated by protoc-gen-go-micro. DO NOT EDIT.
+// protoc-gen-go-micro version: v4.0.2
+// source: meter/meter.proto
+
+package meter
+
+import (
+	context "context"
+	codec "go.unistack.org/micro-proto/v4/codec"
+	v4 "go.unistack.org/micro-server-http/v4"
+	options "go.unistack.org/micro/v4/options"
+	server "go.unistack.org/micro/v4/server"
+)
+
+var (
+	MeterServiceServerEndpoints = []v4.EndpointMetadata{
+		{
+			Name:   "MeterService.Metrics",
+			Path:   "/metrics",
+			Method: "GET",
+			Body:   "",
+			Stream: false,
+		},
+	}
+)
+
+type meterServiceServer struct {
+	MeterServiceServer
+}
+
+func (h *meterServiceServer) Metrics(ctx context.Context, req *codec.Frame, rsp *codec.Frame) error {
+	return h.MeterServiceServer.Metrics(ctx, req, rsp)
+}
+
+func RegisterMeterServiceServer(s server.Server, sh MeterServiceServer, opts ...options.Option) error {
+	type meterService interface {
+		Metrics(ctx context.Context, req *codec.Frame, rsp *codec.Frame) error
+	}
+	type MeterService struct {
+		meterService
+	}
+	h := &meterServiceServer{sh}
+	var nopts []options.Option
+	nopts = append(nopts, v4.HandlerEndpoints(MeterServiceServerEndpoints))
+	return s.Handle(&MeterService{h}, append(nopts, opts...)...)
+}

handler/meter/meter_test.go

@@ -0,0 +1,49 @@
+package meter
+
+import (
+	"context"
+	"testing"
+
+	codecpb "go.unistack.org/micro-proto/v4/codec"
+)
+
+func TestHandler_Metrics(t *testing.T) {
+	type fields struct {
+		opts Options
+	}
+	type args struct {
+		ctx context.Context
+		req *codecpb.Frame
+		rsp *codecpb.Frame
+	}
+	tests := []struct {
+		name    string
+		fields  fields
+		args    args
+		wantErr bool
+	}{
+		{
+			"Test #1",
+			fields{
+				opts: NewOptions(),
+			},
+			args{
+				context.Background(),
+				&codecpb.Frame{Data: []byte("gzip")},
+				&codecpb.Frame{},
+			},
+			true,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			h := &Handler{
+				opts: tt.fields.opts,
+			}
+			if err := h.Metrics(tt.args.ctx, tt.args.req, tt.args.rsp); (err != nil) != tt.wantErr {
+				t.Errorf("Metrics() error = %v, wantErr %v", err, tt.wantErr)
+			}
+			t.Logf("RSP: %v", tt.args.rsp.Data)
+		})
+	}
+}

handler/spa/spa.go

@@ -0,0 +1,19 @@
+package spa
+
+import (
+	"io/fs"
+	"net/http"
+	"strings"
+)
+
+// Handler serve files from dir and redirect to index if file not exists
+var Handler = func(prefix string, dir fs.FS) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		f := http.StripPrefix(prefix, http.FileServer(http.FS(dir)))
+		if _, err := fs.Stat(dir, strings.TrimPrefix(r.RequestURI, prefix)); err != nil {
+			r.RequestURI = prefix
+			r.URL.Path = prefix
+		}
+		f.ServeHTTP(w, r)
+	}
+}

handler/swagger-ui/index.css

@@ -0,0 +1,16 @@
+html {
+    box-sizing: border-box;
+    overflow: -moz-scrollbars-vertical;
+    overflow-y: scroll;
+}
+
+*,
+*:before,
+*:after {
+    box-sizing: inherit;
+}
+
+body {
+    margin: 0;
+    background: #fafafa;
+}

handler/swagger-ui/index.html

@@ -0,0 +1,19 @@
+<!-- HTML for static distribution bundle build -->
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8">
+    <title>Swagger UI</title>
+    <link rel="stylesheet" type="text/css" href="./swagger-ui.css" />
+    <link rel="stylesheet" type="text/css" href="index.css" />
+    <link rel="icon" type="image/png" href="./favicon-32x32.png" sizes="32x32" />
+    <link rel="icon" type="image/png" href="./favicon-16x16.png" sizes="16x16" />
+  </head>
+
+  <body>
+    <div id="swagger-ui"></div>
+    <script src="./swagger-ui-bundle.js" charset="UTF-8"> </script>
+    <script src="./swagger-ui-standalone-preset.js" charset="UTF-8"> </script>
+    <script src="./swagger-initializer.js" charset="UTF-8"> </script>
+  </body>
+</html>

handler/swagger-ui/oauth2-redirect.html

@@ -0,0 +1,79 @@
+<!doctype html>
+<html lang="en-US">
+<head>
+    <title>Swagger UI: OAuth2 Redirect</title>
+</head>
+<body>
+<script>
+    'use strict';
+    function run () {
+        var oauth2 = window.opener.swaggerUIRedirectOauth2;
+        var sentState = oauth2.state;
+        var redirectUrl = oauth2.redirectUrl;
+        var isValid, qp, arr;
+
+        if (/code|token|error/.test(window.location.hash)) {
+            qp = window.location.hash.substring(1).replace('?', '&');
+        } else {
+            qp = location.search.substring(1);
+        }
+
+        arr = qp.split("&");
+        arr.forEach(function (v,i,_arr) { _arr[i] = '"' + v.replace('=', '":"') + '"';});
+        qp = qp ? JSON.parse('{' + arr.join() + '}',
+                function (key, value) {
+                    return key === "" ? value : decodeURIComponent(value);
+                }
+        ) : {};
+
+        isValid = qp.state === sentState;
+
+        if ((
+          oauth2.auth.schema.get("flow") === "accessCode" ||
+          oauth2.auth.schema.get("flow") === "authorizationCode" ||
+          oauth2.auth.schema.get("flow") === "authorization_code"
+        ) && !oauth2.auth.code) {
+            if (!isValid) {
+                oauth2.errCb({
+                    authId: oauth2.auth.name,
+                    source: "auth",
+                    level: "warning",
+                    message: "Authorization may be unsafe, passed state was changed in server. The passed state wasn't returned from auth server."
+                });
+            }
+
+            if (qp.code) {
+                delete oauth2.state;
+                oauth2.auth.code = qp.code;
+                oauth2.callback({auth: oauth2.auth, redirectUrl: redirectUrl});
+            } else {
+                let oauthErrorMsg;
+                if (qp.error) {
+                    oauthErrorMsg = "["+qp.error+"]: " +
+                        (qp.error_description ? qp.error_description+ ". " : "no accessCode received from the server. ") +
+                        (qp.error_uri ? "More info: "+qp.error_uri : "");
+                }
+
+                oauth2.errCb({
+                    authId: oauth2.auth.name,
+                    source: "auth",
+                    level: "error",
+                    message: oauthErrorMsg || "[Authorization failed]: no accessCode received from the server."
+                });
+            }
+        } else {
+            oauth2.callback({auth: oauth2.auth, token: qp, isValid: isValid, redirectUrl: redirectUrl});
+        }
+        window.close();
+    }
+
+    if (document.readyState !== 'loading') {
+        run();
+    } else {
+        document.addEventListener('DOMContentLoaded', function () {
+            run();
+        });
+    }
+</script>
+</body>
+</html>

handler/swagger-ui/swaggerui.go

@@ -0,0 +1,142 @@
+package swaggerui // import "go.unistack.org/micro-server-http/v4/handler/swagger-ui"
+
+import (
+	"embed"
+	"html/template"
+	"net/http"
+	"path"
+	"reflect"
+)
+
+//go:embed *.js *.css *.html *.png
+var assets embed.FS
+
+var (
+	Handler = func(prefix string) http.HandlerFunc {
+		return func(w http.ResponseWriter, r *http.Request) {
+			if r.Method != http.MethodGet || path.Base(r.URL.Path) != "swagger-initializer.js" {
+				http.StripPrefix(prefix, http.FileServer(http.FS(assets))).ServeHTTP(w, r)
+				return
+			}
+			tpl := template.New("swagger-initializer.js").Funcs(TemplateFuncs)
+			ptpl, err := tpl.Parse(Template)
+			if err != nil {
+				w.WriteHeader(http.StatusInternalServerError)
+				_, _ = w.Write([]byte(err.Error()))
+				return
+			}
+			if err := ptpl.Execute(w, Config); err != nil {
+				w.WriteHeader(http.StatusInternalServerError)
+				_, _ = w.Write([]byte(err.Error()))
+				return
+			}
+		}
+	}
+	TemplateFuncs = template.FuncMap{
+		"isInt": func(i interface{}) bool {
+			v := reflect.ValueOf(i)
+			switch v.Kind() {
+			case reflect.Int, reflect.Int8, reflect.Int32, reflect.Int64, reflect.Uint, reflect.Uint8, reflect.Uint32, reflect.Uint64, reflect.Float32, reflect.Float64:
+				return true
+			default:
+				return false
+			}
+		},
+		"isBool": func(i interface{}) bool {
+			v := reflect.ValueOf(i)
+			switch v.Kind() {
+			case reflect.Bool:
+				return true
+			default:
+				return false
+			}
+		},
+		"isString": func(i interface{}) bool {
+			v := reflect.ValueOf(i)
+			switch v.Kind() {
+			case reflect.String:
+				return true
+			default:
+				return false
+			}
+		},
+		"isSlice": func(i interface{}) bool {
+			v := reflect.ValueOf(i)
+			switch v.Kind() {
+			case reflect.Slice:
+				return true
+			default:
+				return false
+			}
+		},
+		"isMap": func(i interface{}) bool {
+			v := reflect.ValueOf(i)
+			switch v.Kind() {
+			case reflect.Map:
+				return true
+			default:
+				return false
+			}
+		},
+	}
+	Template = `
+	window.onload = function() {
+		//<editor-fold desc="Changeable Configuration Block">
+	
+		window.ui = SwaggerUIBundle({
+			{{- range $k, $v := . }}
+			{{- if (eq (printf "%s" $v) "") -}}
+			{{- continue -}}
+			{{ end }}
+			{{ $k }}: {{ if isBool $v -}}
+			{{- $v -}},
+			{{- else if isInt $v -}}
+      {{- $v -}},
+			{{- else if isString $v -}}
+			"{{- $v -}}",
+			{{- else if and (isSlice $v) (or (eq (printf "%s" $k) "presets") (eq (printf "%s" $k) "plugins")) -}}
+			[
+			{{- range $v }}
+				{{ . }},
+			{{- end }}
+			],
+			{{- end -}} 
+			{{ end }}
+		});
+	
+		//</editor-fold>
+	};`
+	Config = map[string]interface{}{
+		"configUrl": "",
+		"dom_id":    "#swagger-ui",
+		/*
+				"domNode":     "",
+			  "spec":        "",
+				"urls": []interface{}{
+					map[string]interface{}{
+							"url":  "",
+							"name": "",
+						},
+					},
+				},
+		*/
+		"url":                      "https://petstore.swagger.io/v2/swagger.json",
+		"deepLinking":              true,
+		"displayOperationId":       false,
+		"defaultModelsExpandDepth": 1,
+		"defaultModelExpandDepth":  1,
+		"displayRequestDuration":   true,
+		"filter":                   true,
+		"operationsSorter":         "alpha",
+		"showExtensions":           true,
+		"tryItOutEnabled":          true,
+		"presets": []string{
+			"SwaggerUIBundle.presets.apis",
+			"SwaggerUIStandalonePreset",
+		},
+		"plugins": []string{
+			"SwaggerUIBundle.plugins.DownloadUrl",
+		},
+		"layout": "StandaloneLayout",
+	}
+)

handler/swagger-ui/swaggerui_test.go

@@ -0,0 +1,15 @@
+package swaggerui
+
+import (
+	"net/http"
+	"testing"
+)
+
+func TestTemplate(t *testing.T) {
+	t.Skip()
+	h := http.NewServeMux()
+	h.HandleFunc("/", Handler(""))
+	if err := http.ListenAndServe(":8080", h); err != nil {
+		t.Fatal(err)
+	}
+}

handler/swagger/swagger.go

@@ -0,0 +1,61 @@
+package swagger
+
+import (
+	"io/fs"
+	"net/http"
+
+	yamlcodec "go.unistack.org/micro-codec-yaml/v4"
+	rutil "go.unistack.org/micro/v4/util/reflect"
+)
+
+// Handler append to generated swagger data from dst map[string]interface{}
+var Handler = func(dst map[string]interface{}, fsys fs.FS) http.HandlerFunc {
+	c := yamlcodec.NewCodec()
+	return func(w http.ResponseWriter, r *http.Request) {
+		if r.Method != http.MethodGet {
+			w.WriteHeader(http.StatusNotFound)
+			return
+		}
+
+		path := r.URL.Path
+		if len(path) > 1 && path[0] == '/' {
+			path = path[1:]
+		}
+
+		buf, err := fs.ReadFile(fsys, path)
+		if err != nil {
+			w.WriteHeader(http.StatusInternalServerError)
+			_, _ = w.Write([]byte(err.Error()))
+			return
+		}
+
+		if dst == nil {
+			w.WriteHeader(http.StatusOK)
+			_, _ = w.Write(buf)
+			return
+		}
+
+		var src interface{}
+
+		if err = c.Unmarshal(buf, src); err != nil {
+			w.WriteHeader(http.StatusInternalServerError)
+			_, _ = w.Write([]byte(err.Error()))
+			return
+		}
+
+		if err = rutil.Merge(src, dst); err != nil {
+			w.WriteHeader(http.StatusInternalServerError)
+			_, _ = w.Write([]byte(err.Error()))
+			return
+		}
+
+		if buf, err = c.Marshal(src); err != nil {
+			w.WriteHeader(http.StatusInternalServerError)
+			_, _ = w.Write([]byte(err.Error()))
+			return
+		}
+
+		w.WriteHeader(http.StatusOK)
+		_, _ = w.Write(buf)
+	}
+}

http.go

@@ -1,270 +1,484 @@
 // Package http implements a go-micro.Server
-package http
+package http // import "go.unistack.org/micro-server-http/v4"
 
 import (
+	"context"
+	"crypto/tls"
 	"errors"
 	"fmt"
 	"net"
 	"net/http"
-	"sort"
+	"reflect"
+	"strings"
 	"sync"
 	"time"
 
-	log "github.com/micro/go-log"
-	"github.com/micro/go-micro/broker"
-	"github.com/micro/go-micro/cmd"
-	"github.com/micro/go-micro/codec"
-	"github.com/micro/go-micro/codec/jsonrpc"
-	"github.com/micro/go-micro/codec/protorpc"
-	"github.com/micro/go-micro/registry"
-	"github.com/micro/go-micro/server"
+	"go.unistack.org/micro/v4/codec"
+	"go.unistack.org/micro/v4/logger"
+	"go.unistack.org/micro/v4/options"
+	"go.unistack.org/micro/v4/register"
+	"go.unistack.org/micro/v4/server"
+	rhttp "go.unistack.org/micro/v4/util/http"
+	"golang.org/x/net/netutil"
 )
 
-var (
-	defaultCodecs = map[string]codec.NewCodec{
-		"application/json":         jsonrpc.NewCodec,
-		"application/json-rpc":     jsonrpc.NewCodec,
-		"application/protobuf":     protorpc.NewCodec,
-		"application/proto-rpc":    protorpc.NewCodec,
-		"application/octet-stream": protorpc.NewCodec,
-	}
-)
+var _ server.Server = (*Server)(nil)
 
-type httpServer struct {
-	sync.Mutex
-	opts         server.Options
-	hd           server.Handler
+type Server struct {
+	hd           interface{}
+	rsvc         *register.Service
+	handlers     map[string]interface{}
 	exit         chan chan error
-	registerOnce sync.Once
-	subscribers  map[*httpSubscriber][]broker.Subscriber
-	// used for first registration
+	errorHandler func(context.Context, interface{}, http.ResponseWriter, *http.Request, error, int)
+	pathHandlers *rhttp.Trie
+	opts         server.Options
+	registerRPC  bool
+	sync.RWMutex
 	registered bool
+	init       bool
 }
 
-func init() {
-	cmd.DefaultServers["http"] = NewServer
-}
-
-func (h *httpServer) newCodec(contentType string) (codec.NewCodec, error) {
-	if cf, ok := h.opts.Codecs[contentType]; ok {
+func (h *Server) newCodec(ct string) (codec.Codec, error) {
+	if idx := strings.IndexRune(ct, ';'); idx >= 0 {
+		ct = ct[:idx]
+	}
+	h.RLock()
+	cf, ok := h.opts.Codecs[ct]
+	h.RUnlock()
+	if ok {
 		return cf, nil
 	}
-	if cf, ok := defaultCodecs[contentType]; ok {
-		return cf, nil
-	}
-	return nil, fmt.Errorf("Unsupported Content-Type: %s", contentType)
+	return nil, codec.ErrUnknownContentType
 }
 
-func (h *httpServer) Options() server.Options {
+func (h *Server) Options() server.Options {
 	h.Lock()
 	opts := h.opts
 	h.Unlock()
 	return opts
 }
 
-func (h *httpServer) Init(opts ...server.Option) error {
+func (h *Server) Init(opts ...options.Option) error {
+	if len(opts) == 0 && h.init {
+		return nil
+	}
+
 	h.Lock()
+
 	for _, o := range opts {
 		o(&h.opts)
 	}
-	h.Unlock()
-	return nil
-}
-
-func (h *httpServer) Handle(handler server.Handler) error {
-	if _, ok := handler.Handler().(http.Handler); !ok {
-		return errors.New("Handle requires http.Handler")
+	if fn, ok := h.opts.Context.Value(errorHandlerKey{}).(func(ctx context.Context, s interface{}, w http.ResponseWriter, r *http.Request, err error, status int)); ok && fn != nil {
+		h.errorHandler = fn
 	}
-	h.Lock()
-	h.hd = handler
-	h.Unlock()
-	return nil
-}
-
-func (h *httpServer) NewHandler(handler interface{}, opts ...server.HandlerOption) server.Handler {
-	options := server.HandlerOptions{
-		Metadata: make(map[string]map[string]string),
+	if h.handlers == nil {
+		h.handlers = make(map[string]interface{})
+	}
+	if h.pathHandlers == nil {
+		h.pathHandlers = rhttp.NewTrie()
 	}
 
-	for _, o := range opts {
-		o(&options)
+	if v, ok := h.opts.Context.Value(registerRPCHandlerKey{}).(bool); ok {
+		h.registerRPC = v
 	}
 
-	var eps []*registry.Endpoint
-
-	if !options.Internal {
-		for name, metadata := range options.Metadata {
-			eps = append(eps, &registry.Endpoint{
-				Name:     name,
-				Metadata: metadata,
-			})
+	if phs, ok := h.opts.Context.Value(pathHandlerKey{}).(*pathHandlerVal); ok && phs.h != nil {
+		for pm, ps := range phs.h {
+			for pp, ph := range ps {
+				if err := h.pathHandlers.Insert([]string{pm}, pp, ph); err != nil {
+					h.Unlock()
+					return err
+				}
+			}
 		}
 	}
+	h.Unlock()
 
-	return &httpHandler{
-		eps:  eps,
-		hd:   handler,
-		opts: options,
+	h.RLock()
+	if err := h.opts.Register.Init(); err != nil {
+		h.RUnlock()
+		return err
 	}
+	if err := h.opts.Tracer.Init(); err != nil {
+		h.RUnlock()
+		return err
+	}
+	if err := h.opts.Logger.Init(); err != nil {
+		h.RUnlock()
+		return err
+	}
+	if err := h.opts.Meter.Init(); err != nil {
+		h.RUnlock()
+		return err
+	}
+	h.RUnlock()
+
+	h.Lock()
+	h.init = true
+	h.Unlock()
+
+	return nil
 }
 
-func (h *httpServer) NewSubscriber(topic string, handler interface{}, opts ...server.SubscriberOption) server.Subscriber {
-	return newSubscriber(topic, handler, opts...)
-}
+func (h *Server) Handle(handler interface{}, opts ...options.Option) error {
+	options := server.NewHandleOptions(opts...)
+	var endpointMetadata []EndpointMetadata
 
-func (h *httpServer) Subscribe(sb server.Subscriber) error {
-	sub, ok := sb.(*httpSubscriber)
+	if v, ok := options.Context.Value(handlerEndpointsKey{}).([]EndpointMetadata); ok {
+		endpointMetadata = v
+	}
+
+	// passed unknown handler
+	hdlr, ok := handler.(*httpHandler)
 	if !ok {
-		return fmt.Errorf("invalid subscriber: expected *httpSubscriber")
-	}
-	if len(sub.handlers) == 0 {
-		return fmt.Errorf("invalid subscriber: no handler functions")
-	}
-
-	if err := validateSubscriber(sb); err != nil {
-		return err
-	}
-
-	h.Lock()
-	defer h.Unlock()
-	_, ok = h.subscribers[sub]
-	if ok {
-		return fmt.Errorf("subscriber %v already exists", h)
-	}
-	h.subscribers[sub] = nil
-	return nil
-}
-
-func (h *httpServer) Register() error {
-	h.Lock()
-	opts := h.opts
-	eps := h.hd.Endpoints()
-	h.Unlock()
-
-	service := serviceDef(opts)
-	service.Endpoints = eps
-
-	h.Lock()
-	var subscriberList []*httpSubscriber
-	for e := range h.subscribers {
-		// Only advertise non internal subscribers
-		if !e.Options().Internal {
-			subscriberList = append(subscriberList, e)
+		h.Lock()
+		if h.handlers == nil {
+			h.handlers = make(map[string]interface{})
 		}
-	}
-	sort.Slice(subscriberList, func(i, j int) bool {
-		return subscriberList[i].topic > subscriberList[j].topic
-	})
-	for _, e := range subscriberList {
-		service.Endpoints = append(service.Endpoints, e.Endpoints()...)
-	}
-	h.Unlock()
-
-	rOpts := []registry.RegisterOption{
-		registry.RegisterTTL(opts.RegisterTTL),
-	}
-
-	h.registerOnce.Do(func() {
-		log.Logf("Registering node: %s", opts.Name+"-"+opts.Id)
-	})
-
-	if err := opts.Registry.Register(service, rOpts...); err != nil {
-		return err
-	}
-
-	h.Lock()
-	defer h.Unlock()
-
-	if h.registered {
-		return nil
-	}
-	h.registered = true
-
-	for sb, _ := range h.subscribers {
-		handler := h.createSubHandler(sb, opts)
-		var subOpts []broker.SubscribeOption
-		if queue := sb.Options().Queue; len(queue) > 0 {
-			subOpts = append(subOpts, broker.Queue(queue))
+		for _, v := range endpointMetadata {
+			h.handlers[v.Name] = h.newHTTPHandler(handler, opts...)
 		}
-		sub, err := opts.Broker.Subscribe(sb.Topic(), handler, subOpts...)
-		if err != nil {
-			return err
-		}
-		h.subscribers[sb] = []broker.Subscriber{sub}
-	}
-	return nil
-}
-
-func (h *httpServer) Deregister() error {
-	h.Lock()
-	opts := h.opts
-	h.Unlock()
-
-	log.Logf("Deregistering node: %s", opts.Name+"-"+opts.Id)
-
-	service := serviceDef(opts)
-	if err := opts.Registry.Deregister(service); err != nil {
-		return err
-	}
-
-	h.Lock()
-	if !h.registered {
 		h.Unlock()
 		return nil
 	}
-	h.registered = false
 
-	for sb, subs := range h.subscribers {
-		for _, sub := range subs {
-			log.Logf("Unsubscribing from topic: %s", sub.Topic())
-			sub.Unsubscribe()
-		}
-		h.subscribers[sb] = nil
+	// passed http.Handler like some muxer
+	if _, ok := hdlr.hd.(http.Handler); ok {
+		h.Lock()
+		h.hd = handler
+		h.Unlock()
+		return nil
 	}
-	h.Unlock()
+
 	return nil
 }
 
-func (h *httpServer) Start() error {
+func (h *Server) newHTTPHandler(handler interface{}, opts ...options.Option) *httpHandler {
+	options := server.NewHandleOptions(opts...)
+
+	eps := make([]*register.Endpoint, 0, len(options.Metadata))
+	for name, metadata := range options.Metadata {
+		eps = append(eps, &register.Endpoint{
+			Name:     name,
+			Metadata: metadata,
+		})
+	}
+
+	hdlr := &httpHandler{
+		eps:      eps,
+		hd:       handler,
+		opts:     options,
+		sopts:    h.opts,
+		handlers: rhttp.NewTrie(),
+	}
+
+	tp := reflect.TypeOf(handler)
+
+	/*
+		if len(options.Metadata) == 0 {
+			if h.registerRPC {
+				h.opts.Logger.Infof(h.opts.Context, "register rpc handler for http.MethodPost %s /%s", hn, hn)
+				if err := hdlr.handlers.Insert([]string{http.MethodPost}, "/"+hn, pth); err != nil {
+					h.opts.Logger.Errorf(h.opts.Context, "cant add rpc handler for http.MethodPost %s /%s", hn, hn)
+				}
+			}
+		}
+	*/
+
+	for hn, md := range options.Metadata {
+		var method reflect.Method
+		mname := hn[strings.Index(hn, ".")+1:]
+		for m := 0; m < tp.NumMethod(); m++ {
+			mn := tp.Method(m)
+			if mn.Name != mname {
+				continue
+			}
+			method = mn
+			break
+		}
+
+		if method.Name == "" && h.opts.Logger.V(logger.ErrorLevel) {
+			h.opts.Logger.Error(h.opts.Context, fmt.Sprintf("nil method for %s", mname))
+			continue
+		}
+
+		mtype, err := prepareEndpoint(method)
+		if err != nil && h.opts.Logger.V(logger.ErrorLevel) {
+			h.opts.Logger.Error(h.opts.Context, fmt.Sprintf("%v", err))
+			continue
+		} else if mtype == nil {
+			h.opts.Logger.Error(h.opts.Context, fmt.Sprintf("nil mtype for %s", mname))
+			continue
+		}
+
+		rcvr := reflect.ValueOf(handler)
+		name := reflect.Indirect(rcvr).Type().Name()
+
+		pth := &patHandler{mtype: mtype, name: name, rcvr: rcvr}
+		hdlr.name = name
+
+		if err := hdlr.handlers.Insert([]string{md["Method"]}, md["Path"], pth); err != nil {
+			h.opts.Logger.Error(h.opts.Context, fmt.Sprintf("cant add handler for %s %s", md["Method"][0], md["Path"][0]))
+		}
+
+		if h.registerRPC {
+			h.opts.Logger.Info(h.opts.Context, fmt.Sprintf("register rpc handler for http.MethodPost %s /%s", hn, hn))
+			if err := hdlr.handlers.Insert([]string{http.MethodPost}, "/"+hn, pth); err != nil {
+				h.opts.Logger.Error(h.opts.Context, fmt.Sprintf("cant add rpc handler for http.MethodPost %s /%s", hn, hn))
+			}
+		}
+	}
+
+	metadata, ok := options.Context.Value(handlerEndpointsKey{}).([]EndpointMetadata)
+	if !ok {
+		return hdlr
+	}
+
+	for _, md := range metadata {
+		hn := md.Name
+		var method reflect.Method
+		mname := hn[strings.Index(hn, ".")+1:]
+		for m := 0; m < tp.NumMethod(); m++ {
+			mn := tp.Method(m)
+			if mn.Name != mname {
+				continue
+			}
+			method = mn
+			break
+		}
+
+		if method.Name == "" && h.opts.Logger.V(logger.ErrorLevel) {
+			h.opts.Logger.Error(h.opts.Context, fmt.Sprintf("nil method for %s", mname))
+			continue
+		}
+
+		mtype, err := prepareEndpoint(method)
+		if err != nil && h.opts.Logger.V(logger.ErrorLevel) {
+			h.opts.Logger.Error(h.opts.Context, fmt.Sprintf("%v", err))
+			continue
+		} else if mtype == nil {
+			h.opts.Logger.Error(h.opts.Context, fmt.Sprintf("nil mtype for %s", mname))
+			continue
+		}
+
+		rcvr := reflect.ValueOf(handler)
+		name := reflect.Indirect(rcvr).Type().Name()
+
+		pth := &patHandler{mtype: mtype, name: name, rcvr: rcvr}
+		hdlr.name = name
+
+		if err := hdlr.handlers.Insert([]string{md.Method}, md.Path, pth); err != nil {
+			h.opts.Logger.Error(h.opts.Context, fmt.Sprintf("cant add handler for %s %s", md.Method, md.Path))
+		}
+
+		if h.registerRPC {
+			h.opts.Logger.Info(h.opts.Context, fmt.Sprintf("register rpc handler for http.MethodPost %s /%s", hn, hn))
+			if err := hdlr.handlers.Insert([]string{http.MethodPost}, "/"+hn, pth); err != nil {
+				h.opts.Logger.Error(h.opts.Context, fmt.Sprintf("cant add rpc handler for http.MethodPost %s /%s", hn, hn))
+			}
+		}
+	}
+
+	return hdlr
+}
+
+func (h *Server) Register() error {
+	var eps []*register.Endpoint
+	h.RLock()
+	for _, hdlr := range h.handlers {
+		hd, ok := hdlr.(*httpHandler)
+		if !ok {
+			continue
+		}
+		eps = append(eps, hd.Endpoints()...)
+	}
+	rsvc := h.rsvc
+	config := h.opts
+	h.RUnlock()
+
+	// if service already filled, reuse it and return early
+	if rsvc != nil {
+		if err := server.DefaultRegisterFunc(rsvc, config); err != nil {
+			return err
+		}
+		return nil
+	}
+
+	service, err := server.NewRegisterService(h)
+	if err != nil {
+		return err
+	}
+	service.Nodes[0].Metadata.Set("protocol", "http")
+	service.Endpoints = eps
+
+	h.RLock()
+	registered := h.registered
+	h.RUnlock()
+
+	if !registered {
+		if config.Logger.V(logger.InfoLevel) {
+			config.Logger.Info(config.Context, fmt.Sprintf("Register [%s] Registering node: %s", config.Register.String(), service.Nodes[0].ID))
+		}
+	}
+
+	// register the service
+	if err := server.DefaultRegisterFunc(service, config); err != nil {
+		return err
+	}
+
+	// already registered? don't need to register subscribers
+	if registered {
+		return nil
+	}
+
 	h.Lock()
-	opts := h.opts
-	hd := h.hd
+	h.registered = true
+	h.rsvc = service
 	h.Unlock()
 
-	ln, err := net.Listen("tcp", opts.Address)
+	return nil
+}
+
+func (h *Server) Deregister() error {
+	h.RLock()
+	config := h.opts
+	h.RUnlock()
+
+	service, err := server.NewRegisterService(h)
 	if err != nil {
 		return err
 	}
 
-	log.Logf("Listening on %s", ln.Addr().String())
+	if config.Logger.V(logger.InfoLevel) {
+		config.Logger.Info(config.Context, fmt.Sprintf("Deregistering node: %s", service.Nodes[0].ID))
+	}
+
+	if err := server.DefaultDeregisterFunc(service, config); err != nil {
+		return err
+	}
 
 	h.Lock()
-	h.opts.Address = ln.Addr().String()
+	h.rsvc = nil
+
+	if !h.registered {
+		h.Unlock()
+		return nil
+	}
+
+	h.registered = false
+	h.Unlock()
+	return nil
+}
+
+func (h *Server) Start() error {
+	h.RLock()
+	config := h.opts
+	h.RUnlock()
+
+	// micro: config.Transport.Listen(config.Address)
+	var ts net.Listener
+
+	if l := config.Listener; l != nil {
+		ts = l
+	} else {
+		var err error
+
+		// check the tls config for secure connect
+		if tc := config.TLSConfig; tc != nil {
+			ts, err = tls.Listen("tcp", config.Address, tc)
+			// otherwise just plain tcp listener
+		} else {
+			ts, err = net.Listen("tcp", config.Address)
+		}
+		if err != nil {
+			return err
+		}
+	}
+
+	if config.MaxConn > 0 {
+		ts = netutil.LimitListener(ts, config.MaxConn)
+	}
+
+	if config.Logger.V(logger.InfoLevel) {
+		config.Logger.Info(config.Context, fmt.Sprintf("Listening on %s", ts.Addr().String()))
+	}
+
+	h.Lock()
+	h.opts.Address = ts.Addr().String()
 	h.Unlock()
 
-	handler, ok := hd.Handler().(http.Handler)
-	if !ok {
-		return errors.New("Server required http.Handler")
+	var handler http.Handler
+
+	// nolint: nestif
+	if h.opts.Context != nil {
+		if hs, ok := h.opts.Context.Value(serverKey{}).(*http.Server); ok && hs != nil {
+			if hs.Handler == nil && h.hd != nil {
+				if hdlr, ok := h.hd.(http.Handler); ok {
+					hs.Handler = hdlr
+					handler = hs.Handler
+				}
+			} else {
+				handler = hs.Handler
+			}
+		}
 	}
 
-	if err = opts.Broker.Connect(); err != nil {
-		return err
+	switch {
+	case handler == nil && h.hd == nil:
+		handler = h
+	case len(h.handlers) > 0 && h.hd != nil:
+		handler = h
+	case handler == nil && h.hd != nil:
+		if hdlr, ok := h.hd.(http.Handler); ok {
+			handler = hdlr
+		}
 	}
 
-	// register
-	if err = h.Register(); err != nil {
-		return err
+	if handler == nil {
+		return fmt.Errorf("cant process with nil handler")
 	}
 
-	go http.Serve(ln, handler)
+	if err := config.RegisterCheck(h.opts.Context); err != nil {
+		if config.Logger.V(logger.ErrorLevel) {
+			config.Logger.Error(config.Context, fmt.Sprintf("Server %s-%s register check error: %s", config.Name, config.ID, err))
+		}
+	} else {
+		if err = h.Register(); err != nil {
+			return err
+		}
+	}
+
+	fn := handler
+
+	var hs *http.Server
+	if h.opts.Context != nil {
+		if mwf, ok := h.opts.Context.Value(middlewareKey{}).([]func(http.Handler) http.Handler); ok && len(mwf) > 0 {
+			// wrap the handler func
+			for i := len(mwf); i > 0; i-- {
+				fn = mwf[i-1](fn)
+			}
+		}
+		var ok bool
+		if hs, ok = h.opts.Context.Value(serverKey{}).(*http.Server); ok && hs != nil {
+			hs.Handler = fn
+		} else {
+			hs = &http.Server{Handler: fn}
+		}
+	}
+
+	go func() {
+		if cerr := hs.Serve(ts); cerr != nil && !errors.Is(cerr, net.ErrClosed) {
+			h.opts.Logger.Error(h.opts.Context, cerr.Error())
+		}
+	}()
 
 	go func() {
 		t := new(time.Ticker)
 
 		// only process if it exists
-		if opts.RegisterInterval > time.Duration(0) {
+		if config.RegisterInterval > time.Duration(0) {
 			// new ticker
-			t = time.NewTicker(opts.RegisterInterval)
+			t = time.NewTicker(config.RegisterInterval)
 		}
 
 		// return error chan
@@ -275,8 +489,35 @@ func (h *httpServer) Start() error {
 			select {
 			// register self on interval
 			case <-t.C:
+				h.RLock()
+				registered := h.registered
+				h.RUnlock()
+				rerr := config.RegisterCheck(h.opts.Context)
+				// nolint: nestif
+				if rerr != nil && registered {
+					if config.Logger.V(logger.ErrorLevel) {
+						config.Logger.Error(config.Context, fmt.Sprintf("Server %s-%s register check error: %s, deregister it", config.Name, config.ID, rerr))
+					}
+					// deregister self in case of error
+					if err := h.Deregister(); err != nil {
+						if config.Logger.V(logger.ErrorLevel) {
+							config.Logger.Error(config.Context, fmt.Sprintf("Server %s-%s deregister error: %s", config.Name, config.ID, err))
+						}
+					}
+				} else if rerr != nil && !registered {
+					if config.Logger.V(logger.ErrorLevel) {
+						config.Logger.Error(config.Context, fmt.Sprintf("Server %s-%s register check error: %s", config.Name, config.ID, rerr))
+					}
+					continue
+				}
 				if err := h.Register(); err != nil {
-					log.Log("Server register error: ", err)
+					if config.Logger.V(logger.ErrorLevel) {
+						config.Logger.Error(config.Context, fmt.Sprintf("Server %s-%s register error: %s", config.Name, config.ID, err))
+					}
+				}
+
+				if err := h.Register(); err != nil {
+					config.Logger.Error(config.Context, fmt.Sprintf("Server register error: %s", err))
 				}
 			// wait for exit
 			case ch = <-h.exit:
@@ -284,35 +525,49 @@ func (h *httpServer) Start() error {
 			}
 		}
 
-		ch <- ln.Close()
-
 		// deregister
-		h.Deregister()
+		if err := h.Deregister(); err != nil {
+			config.Logger.Error(config.Context, fmt.Sprintf("Server deregister error: %s", err))
+		}
 
-		opts.Broker.Disconnect()
+		ctx, cancel := context.WithTimeout(context.Background(), h.opts.GracefulTimeout)
+		defer cancel()
+
+		err := hs.Shutdown(ctx)
+		if err != nil {
+			err = hs.Close()
+		}
+
+		ch <- err
 	}()
 
 	return nil
 }
 
-func (h *httpServer) Stop() error {
+func (h *Server) Stop() error {
 	ch := make(chan error)
 	h.exit <- ch
 	return <-ch
 }
 
-func (h *httpServer) String() string {
+func (h *Server) String() string {
 	return "http"
 }
 
-func newServer(opts ...server.Option) server.Server {
-	return &httpServer{
-		opts:        newOptions(opts...),
-		exit:        make(chan chan error),
-		subscribers: make(map[*httpSubscriber][]broker.Subscriber),
-	}
+func (h *Server) Name() string {
+	return h.opts.Name
 }
 
-func NewServer(opts ...server.Option) server.Server {
-	return newServer(opts...)
+func NewServer(opts ...options.Option) *Server {
+	options := server.NewOptions(opts...)
+	eh := DefaultErrorHandler
+	if v, ok := options.Context.Value(errorHandlerKey{}).(errorHandler); ok && v != nil {
+		eh = v
+	}
+	return &Server{
+		opts:         options,
+		exit:         make(chan chan error),
+		errorHandler: eh,
+		pathHandlers: rhttp.NewTrie(),
+	}
 }

http_test.go

@@ -1,72 +0,0 @@
-package http
-
-import (
-	"fmt"
-	"io/ioutil"
-	"net/http"
-	"testing"
-
-	"github.com/micro/go-micro/registry/memory"
-	"github.com/micro/go-micro/server"
-)
-
-func TestHTTPServer(t *testing.T) {
-	reg := memory.NewRegistry()
-
-	// create server
-	srv := NewServer(server.Registry(reg))
-
-	// create server mux
-	mux := http.NewServeMux()
-	mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
-		w.Write([]byte(`hello world`))
-	})
-
-	// create handler
-	hd := srv.NewHandler(mux)
-
-	// register handler
-	if err := srv.Handle(hd); err != nil {
-		t.Fatal(err)
-	}
-
-	// start server
-	if err := srv.Start(); err != nil {
-		t.Fatal(err)
-	}
-
-	// lookup server
-	service, err := reg.GetService(server.DefaultName)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	if len(service) != 1 {
-		t.Fatalf("Expected 1 service got %d: %+v", len(service), service)
-	}
-
-	if len(service[0].Nodes) != 1 {
-		t.Fatalf("Expected 1 node got %d: %+v", len(service[0].Nodes), service[0].Nodes)
-	}
-
-	// make request
-	rsp, err := http.Get(fmt.Sprintf("http://%s", service[0].Nodes[0].Address))
-	if err != nil {
-		t.Fatal(err)
-	}
-	defer rsp.Body.Close()
-
-	b, err := ioutil.ReadAll(rsp.Body)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	if s := string(b); s != "hello world" {
-		t.Fatalf("Expected response %s, got %s", "hello world", s)
-	}
-
-	// stop server
-	if err := srv.Stop(); err != nil {
-		t.Fatal(err)
-	}
-}

message.go

@@ -1,19 +1,35 @@
 package http
 
+import (
+	"go.unistack.org/micro/v4/codec"
+	"go.unistack.org/micro/v4/metadata"
+)
+
 type httpMessage struct {
+	payload     interface{}
+	codec       codec.Codec
+	header      metadata.Metadata
 	topic       string
 	contentType string
-	payload     interface{}
-}
-
-func (r *httpMessage) ContentType() string {
-	return r.contentType
+	body        []byte
 }
 
 func (r *httpMessage) Topic() string {
 	return r.topic
 }
 
-func (r *httpMessage) Payload() interface{} {
+func (r *httpMessage) ContentType() string {
+	return r.contentType
+}
+
+func (r *httpMessage) Header() metadata.Metadata {
+	return r.header
+}
+
+func (r *httpMessage) Body() interface{} {
 	return r.payload
 }
+
+func (r *httpMessage) Codec() codec.Codec {
+	return r.codec
+}

options.go

@@ -2,47 +2,173 @@ package http
 
 import (
 	"context"
+	"fmt"
+	"net/http"
 
-	"github.com/micro/go-micro/broker"
-	"github.com/micro/go-micro/codec"
-	"github.com/micro/go-micro/registry"
-	"github.com/micro/go-micro/server"
+	"go.unistack.org/micro/v4/options"
 )
 
-func newOptions(opt ...server.Option) server.Options {
-	opts := server.Options{
-		Codecs:   make(map[string]codec.NewCodec),
-		Metadata: map[string]string{},
-		Context:  context.Background(),
-	}
-
-	for _, o := range opt {
-		o(&opts)
-	}
-
-	if opts.Broker == nil {
-		opts.Broker = broker.DefaultBroker
-	}
-
-	if opts.Registry == nil {
-		opts.Registry = registry.DefaultRegistry
-	}
-
-	if len(opts.Address) == 0 {
-		opts.Address = server.DefaultAddress
-	}
-
-	if len(opts.Name) == 0 {
-		opts.Name = server.DefaultName
-	}
-
-	if len(opts.Id) == 0 {
-		opts.Id = server.DefaultId
-	}
-
-	if len(opts.Version) == 0 {
-		opts.Version = server.DefaultVersion
-	}
-
-	return opts
+// SetError pass error to caller
+func SetError(err interface{}) error {
+	return &Error{err: err}
+}
+
+// GetError return underline error
+func GetError(err interface{}) interface{} {
+	if verr, ok := err.(*Error); ok {
+		return verr.err
+	}
+	return err
+}
+
+// Error struct holds error
+type Error struct {
+	err interface{}
+}
+
+// Error func for error interface
+func (err *Error) Error() string {
+	return fmt.Sprintf("%v", err.err)
+}
+
+type (
+	rspCodeKey struct{}
+	rspCodeVal struct {
+		code int
+	}
+)
+
+type (
+	rspHeaderKey struct{}
+	rspHeaderVal struct {
+		h http.Header
+	}
+)
+
+// SetRspHeader add response headers
+func SetRspHeader(ctx context.Context, h http.Header) {
+	if rsp, ok := ctx.Value(rspHeaderKey{}).(*rspHeaderVal); ok {
+		rsp.h = h
+	}
+}
+
+// SetRspCode saves response code in context, must be used by handler to specify http code
+func SetRspCode(ctx context.Context, code int) {
+	if rsp, ok := ctx.Value(rspCodeKey{}).(*rspCodeVal); ok {
+		rsp.code = code
+	}
+}
+
+// getRspHeader get http.Header from context
+func getRspHeader(ctx context.Context) http.Header {
+	if rsp, ok := ctx.Value(rspHeaderKey{}).(*rspHeaderVal); ok {
+		return rsp.h
+	}
+	return nil
+}
+
+// GetRspCode used internally by generated http server handler
+func GetRspCode(ctx context.Context) int {
+	var code int
+	if rsp, ok := ctx.Value(rspCodeKey{}).(*rspCodeVal); ok {
+		code = rsp.code
+	}
+	return code
+}
+
+type middlewareKey struct{}
+
+// Middleware passes http middlewares
+func Middleware(mw ...func(http.Handler) http.Handler) options.Option {
+	return options.ContextOption(middlewareKey{}, mw)
+}
+
+type serverKey struct{}
+
+// HTTPServer provide ability to pass *http.Server
+func HTTPServer(hs *http.Server) options.Option {
+	return options.ContextOption(serverKey{}, hs)
+}
+
+type errorHandler func(ctx context.Context, s interface{}, w http.ResponseWriter, r *http.Request, err error, status int)
+
+type errorHandlerKey struct{}
+
+// ErrorHandler specifies handler for errors
+func ErrorHandler(fn errorHandler) options.Option {
+	return options.ContextOption(errorHandlerKey{}, fn)
+}
+
+type (
+	pathHandlerKey struct{}
+	pathHandlerVal struct {
+		h map[string]map[string]http.HandlerFunc
+	}
+)
+
+// PathHandler specifies http handler for path regexp
+func PathHandler(method, path string, handler http.HandlerFunc) options.Option {
+	return func(src interface{}) error {
+		vctx, err := options.Get(src, ".Context")
+		if err != nil {
+			return err
+		}
+		ctx, ok := vctx.(context.Context)
+		if !ok {
+			return fmt.Errorf("invalid option")
+		}
+
+		v, ok := ctx.Value(pathHandlerKey{}).(*pathHandlerVal)
+		if !ok {
+			v = &pathHandlerVal{h: make(map[string]map[string]http.HandlerFunc)}
+		}
+		m, ok := v.h[method]
+		if !ok {
+			m = make(map[string]http.HandlerFunc)
+			v.h[method] = m
+		}
+		ctx = context.WithValue(ctx, pathHandlerKey{}, v)
+		m[path] = handler
+		return options.Set(src, ctx, ".Context")
+	}
+}
+
+type registerRPCHandlerKey struct{}
+
+// RegisterRPCHandler registers compatibility endpoints with /ServiceName.ServiceEndpoint method POST
+func RegisterRPCHandler(b bool) options.Option {
+	return options.ContextOption(registerRPCHandlerKey{}, b)
+}
+
+type handlerEndpointsKey struct{}
+
+type EndpointMetadata struct {
+	Name   string
+	Path   string
+	Method string
+	Body   string
+	Stream bool
+}
+
+func HandlerEndpoints(md []EndpointMetadata) options.Option {
+	return options.ContextOption(handlerEndpointsKey{}, md)
+}
+
+type handlerOptions struct {
+	headers []string
+	cookies []string
+}
+
+type FillRequestOption func(*handlerOptions)
+
+func Header(headers ...string) FillRequestOption {
+	return func(o *handlerOptions) {
+		o.headers = append(o.headers, headers...)
+	}
+}
+
+func Cookie(cookies ...string) FillRequestOption {
+	return func(o *handlerOptions) {
+		o.cookies = append(o.cookies, cookies...)
+	}
 }

request.go

@@ -0,0 +1,63 @@
+package http
+
+import (
+	"io"
+
+	"go.unistack.org/micro/v4/codec"
+	"go.unistack.org/micro/v4/metadata"
+	"go.unistack.org/micro/v4/server"
+)
+
+var _ server.Request = &rpcRequest{}
+
+type rpcRequest struct {
+	rw          io.ReadWriter
+	payload     interface{}
+	codec       codec.Codec
+	header      metadata.Metadata
+	method      string
+	endpoint    string
+	contentType string
+	service     string
+	stream      bool
+}
+
+func (r *rpcRequest) ContentType() string {
+	return r.contentType
+}
+
+func (r *rpcRequest) Service() string {
+	return r.service
+}
+
+func (r *rpcRequest) Method() string {
+	return r.method
+}
+
+func (r *rpcRequest) Endpoint() string {
+	return r.endpoint
+}
+
+func (r *rpcRequest) Codec() codec.Codec {
+	return r.codec
+}
+
+func (r *rpcRequest) Header() metadata.Metadata {
+	return r.header
+}
+
+func (r *rpcRequest) Read() ([]byte, error) {
+	f := &codec.Frame{}
+	if err := r.codec.ReadBody(r.rw, f); err != nil {
+		return nil, err
+	}
+	return f.Data, nil
+}
+
+func (r *rpcRequest) Stream() bool {
+	return r.stream
+}
+
+func (r *rpcRequest) Body() interface{} {
+	return r.payload
+}

server.go

@@ -0,0 +1,107 @@
+package http
+
+import (
+	"context"
+	"fmt"
+	"reflect"
+	"unicode"
+	"unicode/utf8"
+
+	"go.unistack.org/micro/v4/server"
+)
+
+var typeOfError = reflect.TypeOf((*error)(nil)).Elem()
+
+type methodType struct {
+	ArgType     reflect.Type
+	ReplyType   reflect.Type
+	ContextType reflect.Type
+	method      reflect.Method
+	stream      bool
+}
+
+// Is this an exported - upper case - name?
+func isExported(name string) bool {
+	r, _ := utf8.DecodeRuneInString(name)
+	return unicode.IsUpper(r)
+}
+
+// Is this type exported or a builtin?
+func isExportedOrBuiltinType(t reflect.Type) bool {
+	for t.Kind() == reflect.Ptr {
+		t = t.Elem()
+	}
+	// PkgPath will be non-empty even for an exported type,
+	// so we need to check the type name as well.
+	return isExported(t.Name()) || t.PkgPath() == ""
+}
+
+// prepareEndpoint() returns a methodType for the provided method or nil
+// in case if the method was unsuitable.
+func prepareEndpoint(method reflect.Method) (*methodType, error) {
+	mtype := method.Type
+	mname := method.Name
+	var replyType, argType, contextType reflect.Type
+	var stream bool
+
+	// Endpoint() must be exported.
+	if method.PkgPath != "" {
+		return nil, fmt.Errorf("Endpoint must be exported")
+	}
+
+	switch mtype.NumIn() {
+	case 3:
+		// assuming streaming
+		argType = mtype.In(2)
+		contextType = mtype.In(1)
+		stream = true
+	case 4:
+		// method that takes a context
+		argType = mtype.In(2)
+		replyType = mtype.In(3)
+		contextType = mtype.In(1)
+	default:
+		return nil, fmt.Errorf("method %v of %v has wrong number of ins: %v", mname, mtype, mtype.NumIn())
+	}
+
+	switch stream {
+	case true:
+		// check stream type
+		streamType := reflect.TypeOf((*server.Stream)(nil)).Elem()
+		if !argType.Implements(streamType) {
+			return nil, fmt.Errorf("%v argument does not implement Streamer interface: %v", mname, argType)
+		}
+	default:
+		// First arg need not be a pointer.
+		if !isExportedOrBuiltinType(argType) {
+			return nil, fmt.Errorf("%v argument type not exported: %v", mname, argType)
+		}
+
+		if replyType.Kind() != reflect.Ptr {
+			return nil, fmt.Errorf("method %v reply type not a pointer: %v", mname, replyType)
+		}
+
+		// Reply type must be exported.
+		if !isExportedOrBuiltinType(replyType) {
+			return nil, fmt.Errorf("method %v reply type not exported: %v", mname, replyType)
+		}
+	}
+
+	// Endpoint() needs one out.
+	if mtype.NumOut() != 1 {
+		return nil, fmt.Errorf("method %v has wrong number of outs: %v", mname, mtype.NumOut())
+	}
+	// The return type of the method must be error.
+	if returnType := mtype.Out(0); returnType != typeOfError {
+		return nil, fmt.Errorf("method %v returns %v not error", mname, returnType.String())
+	}
+
+	return &methodType{method: method, ArgType: argType, ReplyType: replyType, ContextType: contextType, stream: stream}, nil
+}
+
+func (m *methodType) prepareContext(ctx context.Context) reflect.Value {
+	if contextv := reflect.ValueOf(ctx); contextv.IsValid() {
+		return contextv
+	}
+	return reflect.Zero(m.ContextType)
+}

subscriber.go

@@ -1,292 +0,0 @@
-package http
-
-import (
-	"bytes"
-	"context"
-	"fmt"
-	"reflect"
-	"strings"
-	"unicode"
-	"unicode/utf8"
-
-	"github.com/micro/go-micro/broker"
-	"github.com/micro/go-micro/codec"
-	"github.com/micro/go-micro/metadata"
-	"github.com/micro/go-micro/registry"
-	"github.com/micro/go-micro/server"
-)
-
-const (
-	subSig = "func(context.Context, interface{}) error"
-)
-
-var typeOfError = reflect.TypeOf((*error)(nil)).Elem()
-
-type handler struct {
-	method  reflect.Value
-	reqType reflect.Type
-	ctxType reflect.Type
-}
-
-type httpSubscriber struct {
-	topic      string
-	rcvr       reflect.Value
-	typ        reflect.Type
-	subscriber interface{}
-	handlers   []*handler
-	endpoints  []*registry.Endpoint
-	opts       server.SubscriberOptions
-}
-
-// Is this an exported - upper case - name?
-func isExported(name string) bool {
-	rune, _ := utf8.DecodeRuneInString(name)
-	return unicode.IsUpper(rune)
-}
-
-// Is this type exported or a builtin?
-func isExportedOrBuiltinType(t reflect.Type) bool {
-	for t.Kind() == reflect.Ptr {
-		t = t.Elem()
-	}
-	// PkgPath will be non-empty even for an exported type,
-	// so we need to check the type name as well.
-	return isExported(t.Name()) || t.PkgPath() == ""
-}
-
-func newSubscriber(topic string, sub interface{}, opts ...server.SubscriberOption) server.Subscriber {
-	var options server.SubscriberOptions
-	for _, o := range opts {
-		o(&options)
-	}
-
-	var endpoints []*registry.Endpoint
-	var handlers []*handler
-
-	if typ := reflect.TypeOf(sub); typ.Kind() == reflect.Func {
-		h := &handler{
-			method: reflect.ValueOf(sub),
-		}
-
-		switch typ.NumIn() {
-		case 1:
-			h.reqType = typ.In(0)
-		case 2:
-			h.ctxType = typ.In(0)
-			h.reqType = typ.In(1)
-		}
-
-		handlers = append(handlers, h)
-
-		endpoints = append(endpoints, &registry.Endpoint{
-			Name:    "Func",
-			Request: extractSubValue(typ),
-			Metadata: map[string]string{
-				"topic":      topic,
-				"subscriber": "true",
-			},
-		})
-	} else {
-		hdlr := reflect.ValueOf(sub)
-		name := reflect.Indirect(hdlr).Type().Name()
-
-		for m := 0; m < typ.NumMethod(); m++ {
-			method := typ.Method(m)
-			h := &handler{
-				method: method.Func,
-			}
-
-			switch method.Type.NumIn() {
-			case 2:
-				h.reqType = method.Type.In(1)
-			case 3:
-				h.ctxType = method.Type.In(1)
-				h.reqType = method.Type.In(2)
-			}
-
-			handlers = append(handlers, h)
-
-			endpoints = append(endpoints, &registry.Endpoint{
-				Name:    name + "." + method.Name,
-				Request: extractSubValue(method.Type),
-				Metadata: map[string]string{
-					"topic":      topic,
-					"subscriber": "true",
-				},
-			})
-		}
-	}
-
-	return &httpSubscriber{
-		rcvr:       reflect.ValueOf(sub),
-		typ:        reflect.TypeOf(sub),
-		topic:      topic,
-		subscriber: sub,
-		handlers:   handlers,
-		endpoints:  endpoints,
-		opts:       options,
-	}
-}
-
-func validateSubscriber(sub server.Subscriber) error {
-	typ := reflect.TypeOf(sub.Subscriber())
-	var argType reflect.Type
-
-	if typ.Kind() == reflect.Func {
-		name := "Func"
-		switch typ.NumIn() {
-		case 2:
-			argType = typ.In(1)
-		default:
-			return fmt.Errorf("subscriber %v takes wrong number of args: %v required signature %s", name, typ.NumIn(), subSig)
-		}
-		if !isExportedOrBuiltinType(argType) {
-			return fmt.Errorf("subscriber %v argument type not exported: %v", name, argType)
-		}
-		if typ.NumOut() != 1 {
-			return fmt.Errorf("subscriber %v has wrong number of outs: %v require signature %s",
-				name, typ.NumOut(), subSig)
-		}
-		if returnType := typ.Out(0); returnType != typeOfError {
-			return fmt.Errorf("subscriber %v returns %v not error", name, returnType.String())
-		}
-	} else {
-		hdlr := reflect.ValueOf(sub.Subscriber())
-		name := reflect.Indirect(hdlr).Type().Name()
-
-		for m := 0; m < typ.NumMethod(); m++ {
-			method := typ.Method(m)
-
-			switch method.Type.NumIn() {
-			case 3:
-				argType = method.Type.In(2)
-			default:
-				return fmt.Errorf("subscriber %v.%v takes wrong number of args: %v required signature %s",
-					name, method.Name, method.Type.NumIn(), subSig)
-			}
-
-			if !isExportedOrBuiltinType(argType) {
-				return fmt.Errorf("%v argument type not exported: %v", name, argType)
-			}
-			if method.Type.NumOut() != 1 {
-				return fmt.Errorf(
-					"subscriber %v.%v has wrong number of outs: %v require signature %s",
-					name, method.Name, method.Type.NumOut(), subSig)
-			}
-			if returnType := method.Type.Out(0); returnType != typeOfError {
-				return fmt.Errorf("subscriber %v.%v returns %v not error", name, method.Name, returnType.String())
-			}
-		}
-	}
-
-	return nil
-}
-
-func (s *httpServer) createSubHandler(sb *httpSubscriber, opts server.Options) broker.Handler {
-	return func(p broker.Event) error {
-		msg := p.Message()
-		ct := msg.Header["Content-Type"]
-		cf, err := s.newCodec(ct)
-		if err != nil {
-			return err
-		}
-
-		hdr := make(map[string]string)
-		for k, v := range msg.Header {
-			hdr[k] = v
-		}
-		delete(hdr, "Content-Type")
-		ctx := metadata.NewContext(context.Background(), hdr)
-
-		results := make(chan error, len(sb.handlers))
-
-		for i := 0; i < len(sb.handlers); i++ {
-			handler := sb.handlers[i]
-
-			var isVal bool
-			var req reflect.Value
-
-			if handler.reqType.Kind() == reflect.Ptr {
-				req = reflect.New(handler.reqType.Elem())
-			} else {
-				req = reflect.New(handler.reqType)
-				isVal = true
-			}
-			if isVal {
-				req = req.Elem()
-			}
-
-			b := &buffer{bytes.NewBuffer(msg.Body)}
-			co := cf(b)
-			defer co.Close()
-
-			if err := co.ReadHeader(&codec.Message{}, codec.Event); err != nil {
-				return err
-			}
-
-			if err := co.ReadBody(req.Interface()); err != nil {
-				return err
-			}
-
-			fn := func(ctx context.Context, msg server.Message) error {
-				var vals []reflect.Value
-				if sb.typ.Kind() != reflect.Func {
-					vals = append(vals, sb.rcvr)
-				}
-				if handler.ctxType != nil {
-					vals = append(vals, reflect.ValueOf(ctx))
-				}
-
-				vals = append(vals, reflect.ValueOf(msg.Payload()))
-
-				returnValues := handler.method.Call(vals)
-				if err := returnValues[0].Interface(); err != nil {
-					return err.(error)
-				}
-				return nil
-			}
-
-			for i := len(opts.SubWrappers); i > 0; i-- {
-				fn = opts.SubWrappers[i-1](fn)
-			}
-
-			go func() {
-				results <- fn(ctx, &httpMessage{
-					topic:       sb.topic,
-					contentType: ct,
-					payload:     req.Interface(),
-				})
-			}()
-		}
-
-		var errors []string
-
-		for i := 0; i < len(sb.handlers); i++ {
-			if err := <-results; err != nil {
-				errors = append(errors, err.Error())
-			}
-		}
-
-		if len(errors) > 0 {
-			return fmt.Errorf("subscriber error: %s", strings.Join(errors, "\n"))
-		}
-
-		return nil
-	}
-}
-
-func (s *httpSubscriber) Topic() string {
-	return s.topic
-}
-
-func (s *httpSubscriber) Subscriber() interface{} {
-	return s.subscriber
-}
-
-func (s *httpSubscriber) Endpoints() []*registry.Endpoint {
-	return s.endpoints
-}
-
-func (s *httpSubscriber) Options() server.SubscriberOptions {
-	return s.opts
-}

tools.go

@@ -0,0 +1,8 @@
+//go:build tools
+
+package http
+
+import (
+	_ "go.unistack.org/micro-proto/v4"
+	_ "go.unistack.org/protoc-gen-go-micro/v4"
+)

util.go

@@ -0,0 +1,53 @@
+package http
+
+import (
+	"context"
+	"net/http"
+	"strings"
+
+	"go.unistack.org/micro/v4/metadata"
+	rutil "go.unistack.org/micro/v4/util/reflect"
+)
+
+func FillRequest(ctx context.Context, req interface{}, opts ...FillRequestOption) error {
+	var err error
+	options := handlerOptions{}
+	for _, o := range opts {
+		o(&options)
+	}
+	md, ok := metadata.FromIncomingContext(ctx)
+	if !ok {
+		return nil
+	}
+
+	for idx := 0; idx < len(options.headers)/2; idx += 2 {
+		k := http.CanonicalHeaderKey(options.headers[idx])
+		v, ok := md[k]
+		if !ok {
+			continue
+		}
+		if err = rutil.SetFieldByPath(req, v, k); err != nil {
+			return err
+		}
+	}
+
+	cookies := md["Cookie"]
+	cmd := make(map[string]string, len(cookies))
+	kv := strings.Split(cookies, "=")
+	if len(kv) != 2 {
+		return nil
+	}
+	cmd[strings.TrimSpace(kv[0])] = strings.TrimSpace(kv[1])
+	for idx := 0; idx < len(options.cookies)/2; idx += 2 {
+		k := http.CanonicalHeaderKey(options.cookies[idx])
+		v, ok := cmd[k]
+		if !ok {
+			continue
+		}
+		if err = rutil.SetFieldByPath(req, v, k); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}

util_test.go

@@ -0,0 +1,56 @@
+package http
+
+import (
+	"bytes"
+	"context"
+	"net/http"
+	"strings"
+	"testing"
+
+	"go.unistack.org/micro/v4/metadata"
+)
+
+func TestFillrequest(t *testing.T) {
+	md := metadata.New(1)
+	md.Set("ClientID", "xxx")
+	type request struct {
+		Token    string
+		ClientID string
+	}
+	ctx := context.Background()
+	hreq, _ := http.NewRequestWithContext(ctx, http.MethodGet, "/v1", nil)
+	cookie1 := &http.Cookie{Name: "Token", Value: "zzz"}
+	cookie2 := &http.Cookie{Name: "Token", Value: "zzz"}
+	hreq.AddCookie(cookie1)
+	hreq.AddCookie(cookie2)
+
+	buf := bytes.NewBuffer(nil)
+	_ = hreq.Write(buf)
+	var cookie string
+	var line string
+	var err error
+	for {
+		line, err = buf.ReadString('\n')
+		if err != nil {
+			break
+		}
+		if strings.Contains(line, "Cookie") {
+			cookie = strings.TrimSpace(strings.Split(line, ":")[1])
+			break
+		}
+	}
+
+	md.Set("Cookie", cookie)
+	ctx = metadata.NewIncomingContext(ctx, md)
+	req := &request{}
+
+	if err := FillRequest(ctx, req, Cookie("Token", "true"), Header("ClientID", "true")); err != nil {
+		t.Fatal(err)
+	}
+	if req.ClientID != "xxx" {
+		t.Fatalf("FillRequest error: %#+v", req)
+	}
+	if req.Token != "zzz" {
+		t.Fatalf("FillRequest error: %#+v", req)
+	}
+}