Add package errors, http, test

.gitignore

@@ -13,3 +13,5 @@
 
 # Dependency directories (remove the comment below to include it)
 # vendor/
+.idea
+.DS_Store

Taskfile.yml

@@ -0,0 +1,18 @@
+version: '3'
+
+vars:
+  MODULE: x
+
+tasks:
+  goimportx:
+    deps:
+      - setup:goimportx
+    cmds:
+      - goimportx --group "system,others" --file {{.CLI_ARGS}} -w {{.CLI_ARGS}}
+  setup:goimports:
+    cmds:
+      - go install github.com/anqiansong/goimportx@latest
+    status:
+      - test -f goimportx
+
+

errors/errors.go

@@ -0,0 +1,19 @@
+package errors
+
+import "fmt"
+
+// CodeMsg is a struct that contains a code and a message.
+// It implements the error interface.
+type CodeMsg struct {
+	Code int
+	Msg  string
+}
+
+func (c *CodeMsg) Error() string {
+	return fmt.Sprintf("code: %d, msg: %s", c.Code, c.Msg)
+}
+
+// New creates a new CodeMsg.
+func New(code int, msg string) error {
+	return &CodeMsg{Code: code, Msg: msg}
+}

errors/errors_test.go

@@ -0,0 +1,26 @@
+package errors
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestNew(t *testing.T) {
+	ast := assert.New(t)
+	c := New(1, "test")
+	cm, ok := c.(*CodeMsg)
+	ast.True(ok)
+	ast.NotNil(cm)
+	ast.Equal(int(1), cm.Code)
+	ast.Equal("test", cm.Msg)
+}
+
+func TestCodeMsg_Error(t *testing.T) {
+	ast := assert.New(t)
+	c := New(1, "test")
+	cm, ok := c.(*CodeMsg)
+	ast.True(ok)
+	ast.NotNil(cm)
+	ast.NotEmpty(cm.Error())
+}

go.mod

@@ -0,0 +1,54 @@
+module github.com/zeromicro/x
+
+go 1.18
+
+require (
+	github.com/stretchr/testify v1.8.2
+	github.com/zeromicro/go-zero v1.5.1
+	google.golang.org/grpc v1.54.0
+)
+
+require (
+	github.com/beorn7/perks v1.0.1 // indirect
+	github.com/cenkalti/backoff/v4 v4.2.0 // indirect
+	github.com/cespare/xxhash/v2 v2.2.0 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/fatih/color v1.15.0 // indirect
+	github.com/felixge/fgprof v0.9.3 // indirect
+	github.com/go-logr/logr v1.2.3 // indirect
+	github.com/go-logr/stdr v1.2.2 // indirect
+	github.com/golang-jwt/jwt/v4 v4.5.0 // indirect
+	github.com/golang/protobuf v1.5.3 // indirect
+	github.com/google/pprof v0.0.0-20211214055906-6f57359322fd // indirect
+	github.com/google/uuid v1.3.0 // indirect
+	github.com/grpc-ecosystem/grpc-gateway/v2 v2.15.0 // indirect
+	github.com/mattn/go-colorable v0.1.13 // indirect
+	github.com/mattn/go-isatty v0.0.17 // indirect
+	github.com/matttproud/golang_protobuf_extensions v1.0.2-0.20181231171920-c182affec369 // indirect
+	github.com/openzipkin/zipkin-go v0.4.1 // indirect
+	github.com/pelletier/go-toml/v2 v2.0.7 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/prometheus/client_golang v1.14.0 // indirect
+	github.com/prometheus/client_model v0.3.0 // indirect
+	github.com/prometheus/common v0.37.0 // indirect
+	github.com/prometheus/procfs v0.8.0 // indirect
+	github.com/spaolacci/murmur3 v1.1.0 // indirect
+	go.opentelemetry.io/otel v1.14.0 // indirect
+	go.opentelemetry.io/otel/exporters/jaeger v1.14.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/internal/retry v1.14.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.14.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.14.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp v1.14.0 // indirect
+	go.opentelemetry.io/otel/exporters/zipkin v1.14.0 // indirect
+	go.opentelemetry.io/otel/sdk v1.14.0 // indirect
+	go.opentelemetry.io/otel/trace v1.14.0 // indirect
+	go.opentelemetry.io/proto/otlp v0.19.0 // indirect
+	go.uber.org/automaxprocs v1.5.2 // indirect
+	golang.org/x/net v0.9.0 // indirect
+	golang.org/x/sys v0.7.0 // indirect
+	golang.org/x/text v0.9.0 // indirect
+	google.golang.org/genproto v0.0.0-20230123190316-2c411cf9d197 // indirect
+	google.golang.org/protobuf v1.30.0 // indirect
+	gopkg.in/yaml.v2 v2.4.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+)

http/base.go

@@ -0,0 +1,82 @@
+package http
+
+import (
+	"context"
+	"encoding/xml"
+	"net/http"
+
+	"github.com/zeromicro/go-zero/rest/httpx"
+	"github.com/zeromicro/x/errors"
+	"google.golang.org/grpc/status"
+)
+
+// BaseResponse is the base response struct.
+type BaseResponse[T any] struct {
+	// Code represents the business code, not the http status code.
+	Code int `json:"code" xml:"code"`
+	// Msg represents the business message, if Code = BusinessCodeOK,
+	// and Msg is empty, then the Msg will be set to BusinessMsgOk.
+	Msg string `json:"msg" xml:"msg"`
+	// Data represents the business data.
+	Data T `json:"data,omitempty" xml:"data,omitempty"`
+}
+
+type baseXmlResponse[T any] struct {
+	XMLName  xml.Name `xml:"xml"`
+	Version  string   `xml:"version,attr"`
+	Encoding string   `xml:"encoding,attr"`
+	BaseResponse[T]
+}
+
+// JsonBaseResponse writes v into w with http.StatusOK.
+func JsonBaseResponse(w http.ResponseWriter, v any) {
+	httpx.OkJson(w, wrapBaseResponse(v))
+}
+
+// JsonBaseResponseCtx writes v into w with http.StatusOK.
+func JsonBaseResponseCtx(ctx context.Context, w http.ResponseWriter, v any) {
+	httpx.OkJsonCtx(ctx, w, wrapBaseResponse(v))
+}
+
+// XmlBaseResponse writes v into w with http.StatusOK.
+func XmlBaseResponse(w http.ResponseWriter, v any) {
+	OkXml(w, wrapXmlBaseResponse(v))
+}
+
+// XmlBaseResponseCtx writes v into w with http.StatusOK.
+func XmlBaseResponseCtx(ctx context.Context, w http.ResponseWriter, v any) {
+	OkXmlCtx(ctx, w, wrapXmlBaseResponse(v))
+}
+
+func wrapXmlBaseResponse(v any) baseXmlResponse[any] {
+	base := wrapBaseResponse(v)
+	return baseXmlResponse[any]{
+		Version:      xmlVersion,
+		Encoding:     xmlEncoding,
+		BaseResponse: base,
+	}
+}
+
+func wrapBaseResponse(v any) BaseResponse[any] {
+	var resp BaseResponse[any]
+	switch data := v.(type) {
+	case *errors.CodeMsg:
+		resp.Code = data.Code
+		resp.Msg = data.Msg
+	case errors.CodeMsg:
+		resp.Code = data.Code
+		resp.Msg = data.Msg
+	case *status.Status:
+		resp.Code = int(data.Code())
+		resp.Msg = data.Message()
+	case error:
+		resp.Code = BusinessCodeError
+		resp.Msg = data.Error()
+	default:
+		resp.Code = BusinessCodeOK
+		resp.Msg = BusinessMsgOk
+		resp.Data = v
+	}
+
+	return resp
+}