feat: v1.0.0

.gitignore

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+
+# Created by https://www.toptal.com/developers/gitignore/api/go
+# Edit at https://www.toptal.com/developers/gitignore?templates=go
+
+### Go ###
+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+
+# 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 Patch ###
+/vendor/
+/Godeps/
+
+# End of https://www.toptal.com/developers/gitignore/api/go

Dockerfile

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+# syntax=docker/dockerfile:1.2
+FROM golang:1.16-alpine as build
+WORKDIR /go/src/app
+COPY go.mod go.sum ./
+RUN --mount=type=cache,target=/root/.cache/go-build go mod download
+COPY main.go .
+RUN --mount=type=cache,target=/root/.cache/go-build go build -o go-http-proxy
+
+FROM alpine:3.14 as runtime
+COPY --from=build /go/src/app/go-http-proxy /bin
+ENTRYPOINT [ "/bin/go-http-proxy" ]
+CMD [ "--port=8080" ]

README.md

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+# Go Http Proxy
+This is a squid-like HTTP proxy based on [github@smartystreets/cproxy](https://github.com/smartystreets/cproxy).
+This git repo is to use the Cproxy library and web app from it as binary artifact can be reused every, as such using any http proxy (Squid, .. so on)
+
+# Prerequisites
+- docker (v20 or above)
+- docker-compose ( v1.29.x or above)
+
+# Getting started
+
+- Run the app `go run .`
+- Validate it `curl -x localhost:8080 https://google.com` or using env var `HTTP_PROXY=http://localhost:8080` for other clients
+
+or Run the app with custom port:
+<details>
+- Run the app with custom port `go run . --port=9191`
+- Validate it `curl -x localhost:9191 https://google.com` or using env var `HTTP_PROXY=http://localhost:8080` for other clients
+</details>
+
+
+or Run it inside container:
+<details>
+- up it `docker-compose up -d`
+- then validate `curl -x $(docker-compose port app 8080) https://google.com`
+- clean up it `docker-compose down`
+</details>
+
+# License
+
+MIT

docker-compose.yaml

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+version: '3.9'
+
+services:
+  app:
+    build: .
+    ports:
+      - 8080
+  ## custom port
+  # app-with-custom-port:
+  #   build: .
+  #   ports:
+  #     - 9191
+  #   command: --port=9191

go.mod

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+module github.com/abdennour/go-http-proxy
+
+go 1.16
+
+require github.com/smartystreets/cproxy/v2 v2.0.3 // indirect

go.sum

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+github.com/smartystreets/assertions v1.2.0/go.mod h1:tcbTF8ujkAEcZ8TElKY+i30BzYlVhC/LOxJk7iOWnoo=
+github.com/smartystreets/cproxy/v2 v2.0.3 h1:2QZt+pcC7s114RJyv2sie3te7EYaAkMgTU7t/pjND8A=
+github.com/smartystreets/cproxy/v2 v2.0.3/go.mod h1:6vp0ha5Zwl83i12bH5v484+dXLZqb9OSDqioTL5w7Yg=
+github.com/smartystreets/gunit v1.4.2/go.mod h1:ZjM1ozSIMJlAz/ay4SG8PeKF00ckUp+zMHZXV9/bvak=

hooks/build

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+#!/usr/bin/env sh
+
+# $1: tag
+build_function()
+{
+  IMMUTABLE_TAG=$1
+  # if no tag provided
+  if [ -z "${IMMUTABLE_TAG}" ]; then
+    if [ ! -z "${SOURCE_COMMIT}" ]; then
+      export IMMUTABLE_TAG=v$(echo $SOURCE_COMMIT | tail -c +2|head -c 3)
+    else
+      timestamp=v$(date +%s)
+      export IMMUTABLE_TAG=v$(echo $timestamp | tail -c +2|head -c 3)
+    fi
+  fi
+
+  echo "------ HOOK START - BUILD -------"
+  export BUILD_DATE=`date -u +"%Y-%m-%dT%H:%M:%SZ"`
+  export IMMUTABLE_IMAGE_NAME=${DOCKER_REPO}:${IMMUTABLE_TAG}
+  echo '--- Env vars just before building'
+  printenv
+  COMPOSE_FILE=docker-compose.yaml:hooks/docker-compose.ci.yaml \
+    docker-compose build app;
+  # release
+  docker tag ${IMMUTABLE_IMAGE_NAME} ${IMAGE_NAME}
+
+  echo "---publish immutable artifact ----"
+  docker push ${IMMUTABLE_IMAGE_NAME}
+  echo "------ HOOK END - BUILD -------"
+}
+
+
+build_function
+build_function latest

hooks/docker-compose.ci.yaml

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+version: '3.9'
+
+services:
+  app:
+    image: ${IMMUTABLE_IMAGE_NAME}
+    labels:
+      maintainer: "Abdennour Toumi <https://kubernetes.tn>"
+      tn.kubernetes.license: "MIT"
+      tn.kubernetes.name: "abdennour/${IMAGE_NAME_ONLY}"
+      tn.kubernetes.url: "https://github.com/abdennour/bakery-images"
+      tn.kubernetes.vcs-url: "https://github.com/abdennour/bakery-images.git"
+      tn.kubernetes.vcs-type: Git
+      tn.kubernetes.build-date: ${BUILD_DATE}
+      tn.kubernetes.version: ${IMMUTABLE_TAG}
+      tn.kubernetes.vcs-ref: ${SOURCE_COMMIT}

main.go

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+package main
+
+import (
+	"flag"
+	"log"
+	"net/http"
+
+	"github.com/smartystreets/cproxy/v2"
+)
+
+func main() {
+	port := flag.String("port", "8080", "proxy port")
+	flag.Parse()
+	handler := cproxy.New()
+	log.Printf("Listening on: *:%s", *port)
+	_ = http.ListenAndServe(":"+*port, handler)
+}