add new time package,regexp package code

Author: cy422396350

base/reflect/reflect_test.go

@@ -5,25 +5,29 @@ import (
 	"fmt"
 	"reflect"
 	"testing"
-	"unsafe"
 )
 
 type TestStruct struct {
 	A int    `json:"a"`
 	B string `json:"b"`
-	c string `json:"c"`
+	C string `json:"c"`
 }
 
 // 通过反射修改非导出字段
 func TestChangeNotExportFiled(t *testing.T) {
 	var r TestStruct
-	// 获取字段对象
-	v := reflect.ValueOf(&r).Elem().FieldByName("c")
-	// 构建指向该字段的可寻址（addressable）反射对象
-	rv := reflect.NewAt(v.Type(), unsafe.Pointer(v.UnsafeAddr())).Elem()
-	// 设置值
-	fv := reflect.ValueOf("pibigstar")
-	rv.Set(fv)
+	r.A = 100
+	r.B = "B"
+	r.C = "c"
+	getValue := reflect.ValueOf(r)
+	if getValue.Kind() != reflect.Struct {
+		panic("need struct kind")
+	}
+	getType := reflect.TypeOf(r)
+	// 或者 getType := getValue.Type()
+	for i := 0; i < getValue.NumField(); i++ {
+		t.Logf("name: %s, type: %s, value: %v\n", getType.Field(i).Name, getValue.Field(i).Type(), getValue.Field(i).Interface())
+	}
 
 	t.Logf("%+v", r)
 }

base/unsafe/unsafe_test.go

@@ -10,13 +10,13 @@ import (
 // 任何指针都可以转换为unsafe.Pointer
 // unsafe.Pointer可以转换为任何指针
 func TestPointer(t *testing.T) {
-	i := 10
-	ip := &i
+	i := 10  // 声明一个地址和数据
+	ip := &i // 取得这个数据的地址
 	// 将 *int 转为 *float64
-	var fp = (*float64)(unsafe.Pointer(ip))
-
-	*fp = *fp * 3
-	t.Log(i)
+	var fp = (*float64)(unsafe.Pointer(ip)) // 把地址值给fp
+	t.Logf("%p", &i)
+	*fp = *fp * 3    // 把地址值的数据乘以3
+	t.Logf("%p", fp) // float64
 }
 
 // uintptr可以转换为unsafe.Pointer

design/singleton/go_single.go

@@ -2,19 +2,18 @@ package singleton
 
 import "sync"
 
+type singleton struct{}
+
 var (
 	goInstance *Instance
+	ins        *singleton
 	once       sync.Once
 )
 
 // 使用go 实现单例模式
-func GoInstance(name string) *Instance {
-	if goInstance == nil {
-		once.Do(func() {
-			goInstance = &Instance{
-				Name: name,
-			}
-		})
-	}
-	return goInstance
+func GetIns() *singleton {
+	once.Do(func() {
+		ins = &singleton{}
+	})
+	return ins
 }

go.mod

@@ -18,6 +18,7 @@ require (
 	github.com/antchfx/xpath v1.1.8 // indirect
 	github.com/astaxie/beego v1.12.0 // indirect
 	github.com/axgle/mahonia v0.0.0-20180208002826-3358181d7394
+	github.com/charmbracelet/lipgloss v0.1.1
 	github.com/codahale/hdrhistogram v0.0.0-20161010025455-3a0bb77429bd // indirect
 	github.com/coreos/etcd v3.3.18+incompatible
 	github.com/coreos/go-systemd v0.0.0-20191104093116-d3cd4ed1dbcf // indirect
@@ -36,6 +37,7 @@ require (
 	github.com/gocolly/colly v1.2.0
 	github.com/gofrs/uuid v3.2.0+incompatible // indirect
 	github.com/goinggo/mapstructure v0.0.0-20140717182941-194205d9b4a9
+	github.com/golang-module/carbon v1.3.7 // indirect
 	github.com/golang/mock v1.3.1
 	github.com/golang/protobuf v1.4.2 // indirect
 	github.com/google/go-cmp v0.4.0
@@ -81,14 +83,14 @@ require (
 	github.com/skip2/go-qrcode v0.0.0-20190110000554-dc11ecdae0a9
 	github.com/smallnest/rpcx v0.0.0-20170601021420-329cf0078113
 	github.com/smartwalle/alipay/v3 v3.0.9
+	github.com/smartystreets/goconvey v1.6.4
 	github.com/soheilhy/cmux v0.1.4
 	github.com/sony/sonyflake v1.0.0
 	github.com/streadway/amqp v0.0.0-20190404075320-75d898a42a94
 	github.com/temoto/robotstxt v1.1.1 // indirect
 	github.com/uber/jaeger-client-go v2.23.1+incompatible
 	github.com/uber/jaeger-lib v2.2.0+incompatible // indirect
 	github.com/unidoc/unioffice v1.2.0
-	github.com/varstr/uaparser v0.0.0-20170929040706-6aabb7c4e98c
 	github.com/xdg/scram v0.0.0-20180814205039-7eeb5667e42c // indirect
 	github.com/xdg/stringprep v1.0.0 // indirect
 	github.com/xuri/excelize v1.4.0
@@ -101,7 +103,6 @@ require (
 	golang.org/x/net v0.0.0-20200602114024-627f9648deb9
 	golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45
 	golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e
-	golang.org/x/sys v0.0.0-20200515095857-1151b9dac4a9 // indirect
 	golang.org/x/text v0.3.2
 	golang.org/x/time v0.0.0-20190308202827-9d24e82272b4
 	google.golang.org/appengine v1.6.6 // indirect

go.sum

@@ -2,58 +2,12 @@ package main
 
 import (
 	"fmt"
-	"log"
-	"net/http"
+	"github.com/charmbracelet/lipgloss"
 	_ "net/http/pprof"
-	"os"
-	"path/filepath"
-	"time"
-
-	"github.com/varstr/uaparser"
 )
 
-const hostPort = ":8080"
+var style = lipgloss.NewStyle().Bold(false).Foreground(lipgloss.Color("#FAFAFA")).Background(lipgloss.Color("#7D56F4")).PaddingTop(2).PaddingLeft(4).Width(22)
 
 func main() {
-	http.HandleFunc("/hello", Hello)
-	fmt.Println("Starting server on", hostPort)
-	if err := http.ListenAndServe(hostPort, nil); err != nil {
-		log.Fatalf("HTTP server failed: %v", err)
-	}
-}
-
-func Hello(w http.ResponseWriter, r *http.Request) {
-	start := time.Now()
-	tags := getStatsTags(r)
-	duration := time.Since(start)
-	fmt.Println(tags, duration)
-}
-
-func getStatsTags(r *http.Request) map[string]string {
-	userBrowser, userOS := parseUserAgent(r.UserAgent())
-	stats := map[string]string{
-		"browser":  userBrowser,
-		"os":       userOS,
-		"endpoint": filepath.Base(r.URL.Path),
-	}
-
-	hostName, _ := os.Hostname()
-
-	if hostName != "" {
-		stats["host"] = hostName
-	}
-	return stats
-}
-
-func parseUserAgent(uaString string) (browser, os string) {
-	ua := uaparser.Parse(uaString)
-
-	if ua.Browser != nil {
-		browser = ua.Browser.Name
-	}
-	if ua.OS != nil {
-		os = ua.OS.Name
-	}
-
-	return browser, os
+	fmt.Println(style.Render("Hello, kitty."))
 }

pprof/main.go

@@ -10,7 +10,7 @@ import (
 
 func TestHystrix(t *testing.T) {
 	hystrix.ConfigureCommand("test", hystrix.CommandConfig{
-		MaxConcurrentRequests:  1,    // 最大并发量
+		MaxConcurrentRequests:  10,   // 最大并发量
 		Timeout:                3000, // 单次请求超时时间，如果超过3s将认为服务不可用
 		RequestVolumeThreshold: 1,    // 10秒内如果出现1次错误就触发熔断
 		ErrorPercentThreshold:  1,    // 按百分比，如果出现1%的错误就触发熔断

utils/hystrix/hystrix_test.go

@@ -45,9 +45,12 @@ func TestTimeParse(t *testing.T) {
 }
 
 func TestTimeFirstAndLast(t *testing.T) {
-	now := time.Now()
-	t.Log(FirstMonth(now))
-	t.Log(FirstMonthUnix(now))
-	t.Log(LastMonth(now))
-	t.Log(LastMonthUnix(now))
+	st, err := ParseTime("2020-09-10 15:22:00")
+	if err != nil {
+		t.Error(err)
+	}
+	t.Log(FirstMonth(st))
+	t.Log(FirstMonthUnix(st))
+	t.Log(LastMonth(st))
+	t.Log(LastMonthUnix(st))
 }