initial import

example/graceful/dns/api/Dockerfile

@@ -0,0 +1,26 @@
+FROM golang:1.13 AS builder
+
+ENV CGO_ENABLED 0
+ENV GOOS linux
+
+RUN apt-get update
+RUN apt-get install -y apt-utils upx
+
+WORKDIR $GOPATH/src/zero
+COPY . .
+RUN go build -ldflags="-s -w" -o /app/graceful example/graceful/dns/api/graceful.go
+RUN upx /app/graceful
+
+
+FROM alpine
+
+RUN apk update --no-cache
+RUN apk add --no-cache ca-certificates
+RUN apk add --no-cache tzdata
+ENV TZ Asia/Shanghai
+
+WORKDIR /app
+COPY --from=builder /app/graceful /app/graceful
+COPY example/graceful/dns/api/etc/graceful-api.json /app/etc/config.json
+
+CMD ["./graceful", "-f", "etc/config.json"]

example/graceful/dns/api/Makefile

@@ -0,0 +1,11 @@
+version := v$(shell /bin/date "+%y%m%d%H%M%S")
+
+build:
+	docker pull alpine
+	cd $(GOPATH)/src/zero && docker build -t registry.cn-hangzhou.aliyuncs.com/xapp/graceful:$(version) . -f example/graceful/dns/api/Dockerfile
+
+push: build
+	docker push registry.cn-hangzhou.aliyuncs.com/xapp/graceful:$(version)
+
+deploy: push
+	kubectl -n kevin set image deployment/graceful-deployment graceful=registry-vpc.cn-hangzhou.aliyuncs.com/xapp/graceful:$(version)

example/graceful/dns/api/config/config.go

@@ -0,0 +1,11 @@
+package config
+
+import (
+	"zero/ngin"
+	"zero/rpcx"
+)
+
+type Config struct {
+	ngin.NgConf
+	Rpc rpcx.RpcClientConf
+}

example/graceful/dns/api/etc/graceful-api.json

@@ -0,0 +1,9 @@
+{
+    "Name": "graceful-api",
+    "Host": "0.0.0.0",
+    "Port": 8888,
+    "MaxConns": 1000000,
+    "Rpc": {
+        "Server": "dns:///gracefulrpc:3456"
+    }
+}

example/graceful/dns/api/graceful.api

@@ -0,0 +1,11 @@
+type Response {
+    Host string `json:"host"`
+    Time int64 `json:"time"`
+}
+
+service graceful-api {
+    @server(
+        handler: GracefulHandler
+    )
+    get /api/graceful() returns(Response)
+}

example/graceful/dns/api/graceful.go

@@ -0,0 +1,32 @@
+package main
+
+import (
+	"flag"
+
+	"zero/core/conf"
+	"zero/example/graceful/dns/api/config"
+	"zero/example/graceful/dns/api/handler"
+	"zero/example/graceful/dns/api/svc"
+	"zero/ngin"
+	"zero/rpcx"
+)
+
+var configFile = flag.String("f", "etc/graceful-api.json", "the config file")
+
+func main() {
+	flag.Parse()
+
+	var c config.Config
+	conf.MustLoad(*configFile, &c)
+
+	client := rpcx.MustNewClient(c.Rpc)
+	ctx := &svc.ServiceContext{
+		Client: client,
+	}
+
+	engine := ngin.MustNewEngine(c.NgConf)
+	defer engine.Stop()
+
+	handler.RegisterHandlers(engine, ctx)
+	engine.Start()
+}

example/graceful/dns/api/graceful.yaml

@@ -0,0 +1,42 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: graceful
+  namespace: kevin
+spec:
+  selector:
+    app: graceful
+  type: ClusterIP
+  ports:
+    - name: graceful-port
+      port: 3333
+      targetPort: 8888
+
+---
+
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: graceful-deployment
+  namespace: kevin
+  labels:
+    app: graceful
+spec:
+  replicas: 3
+  selector:
+    matchLabels:
+      app: graceful
+  template:
+    metadata:
+      labels:
+        app: graceful
+    spec:
+      containers:
+        - name: graceful
+          image: registry-vpc.cn-hangzhou.aliyuncs.com/xapp/graceful:v191022133857
+          imagePullPolicy: Always
+          ports:
+            - containerPort: 8888
+      imagePullSecrets:
+        - name: aliyun
+

example/graceful/dns/api/handler/gracefulhandler.go

@@ -0,0 +1,49 @@
+package handler
+
+import (
+	"context"
+	"fmt"
+	"net/http"
+	"os"
+	"time"
+
+	"zero/core/executors"
+	"zero/core/httpx"
+	"zero/core/logx"
+	"zero/example/graceful/dns/api/svc"
+	"zero/example/graceful/dns/api/types"
+	"zero/example/graceful/dns/rpc/graceful"
+)
+
+func gracefulHandler(ctx *svc.ServiceContext) http.HandlerFunc {
+	logger := executors.NewLessExecutor(time.Second)
+	return func(w http.ResponseWriter, r *http.Request) {
+		var resp types.Response
+
+		conn, ok := ctx.Client.Next()
+		if !ok {
+			http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
+			return
+		}
+
+		host, err := os.Hostname()
+		if err != nil {
+			http.Error(w, http.StatusText(http.StatusNotImplemented), http.StatusNotImplemented)
+			return
+		}
+
+		client := graceful.NewGraceServiceClient(conn)
+		rp, err := client.Grace(context.Background(), &graceful.Request{From: host})
+		if err != nil {
+			logx.Error(err)
+			http.Error(w, http.StatusText(http.StatusBadGateway), http.StatusBadGateway)
+			return
+		}
+
+		resp.Host = rp.Host
+		logger.DoOrDiscard(func() {
+			fmt.Printf("%s from host: %s\n", time.Now().Format("15:04:05"), rp.Host)
+		})
+		httpx.OkJson(w, resp)
+	}
+}

example/graceful/dns/api/handler/routes.go

@@ -0,0 +1,19 @@
+// DO NOT EDIT, generated by goctl
+package handler
+
+import (
+	"net/http"
+
+	"zero/example/graceful/dns/api/svc"
+	"zero/ngin"
+)
+
+func RegisterHandlers(engine *ngin.Engine, ctx *svc.ServiceContext) {
+	engine.AddRoutes([]ngin.Route{
+		{
+			Method:  http.MethodGet,
+			Path:    "/api/graceful",
+			Handler: gracefulHandler(ctx),
+		},
+	})
+}

example/graceful/dns/api/svc/servicecontext.go

@@ -0,0 +1,7 @@
+package svc
+
+import "zero/rpcx"
+
+type ServiceContext struct {
+	Client *rpcx.RpcClient
+}

example/graceful/dns/api/types/types.go

@@ -0,0 +1,7 @@
+// DO NOT EDIT, generated by goctl
+package types
+
+type Response struct {
+	Host string `json:"host"`
+	Time int64  `json:"time"`
+}