restructured the project to comply community guideline, for others check release note

internal/common/env.go

@@ -0,0 +1,55 @@
+package common
+
+import (
+	"fmt"
+	"net"
+	"os"
+
+	"github.com/sirupsen/logrus"
+	U "github.com/yusing/go-proxy/internal/utils"
+)
+
+var (
+	NoSchemaValidation = GetEnvBool("GOPROXY_NO_SCHEMA_VALIDATION")
+	IsDebug            = GetEnvBool("GOPROXY_DEBUG")
+
+	ProxyHTTPAddr,
+	ProxyHTTPHost,
+	ProxyHTTPPort,
+	ProxyHTTPURL = GetAddrEnv("GOPROXY_HTTP_ADDR", ":80", "http")
+
+	ProxyHTTPSAddr,
+	ProxyHTTPSHost,
+	ProxyHTTPSPort,
+	ProxyHTTPSURL = GetAddrEnv("GOPROXY_HTTPS_ADDR", ":443", "https")
+
+	APIHTTPAddr,
+	APIHTTPHost,
+	APIHTTPPort,
+	APIHTTPURL = GetAddrEnv("GOPROXY_API_ADDR", "127.0.0.1:8888", "http")
+)
+
+func GetEnvBool(key string) bool {
+	return U.ParseBool(os.Getenv(key))
+}
+
+func GetEnv(key, defaultValue string) string {
+	value, ok := os.LookupEnv(key)
+	if !ok {
+		value = defaultValue
+	}
+	return value
+}
+
+func GetAddrEnv(key, defaultValue, scheme string) (addr, host, port, fullURL string) {
+	addr = GetEnv(key, defaultValue)
+	host, port, err := net.SplitHostPort(addr)
+	if err != nil {
+		logrus.Fatalf("Invalid address: %s", addr)
+	}
+	if host == "" {
+		host = "localhost"
+	}
+	fullURL = fmt.Sprintf("%s://%s:%s", scheme, host, port)
+	return
+}