Merge pull request #91 from filecoin-project/feature/powervoting-w3

support web3storage

powervoting-backend/Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:alpine
+FROM golang:alpine AS backend-builder
 
 # env
 ENV GO111MODULE=on \
@@ -16,14 +16,21 @@ COPY . .
 # go build
 RUN go build -o app .
 
+
+#requires Node 18 or higher
+FROM node:22
+
+# 
+RUN npm install -g @web3-storage/w3cli
+
 # move to /dist
 WORKDIR /dist
 
 # copy file to /dist
-RUN cp /build/app .
-RUN cp /build/configuration.yaml .
-RUN cp /build/abi/power-voting.json .
-RUN cp /build/abi/oracle.json .
+RUN cp --from=backend-builder /build/app .
+RUN cp --from=backend-builder /build/configuration.yaml .
+RUN cp --from=backend-builder /build/abi/power-voting.json .
+RUN cp --from=backend-builder /build/abi/oracle.json .
 
 # expose server port
 EXPOSE 9999

powervoting-backend/api/proposal.go

@@ -15,9 +15,17 @@
 package api
 
 import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"math/rand"
+	"os"
+	"os/exec"
+	"path/filepath"
 	"powervoting-server/db"
 	"powervoting-server/model"
 	"powervoting-server/response"
+	"time"
 
 	"github.com/gin-gonic/gin"
 	"go.uber.org/zap"
@@ -60,3 +68,56 @@ func VoteHistory(c *gin.Context) {
 	}
 	response.SuccessWithData(history, c)
 }
+
+func W3Upload(c *gin.Context) {
+	file, err := c.FormFile("file")
+	if err != nil {
+		zap.L().Error("upload file error: ", zap.Error(err))
+		response.SystemError(c)
+		return
+	}
+
+	//rand file name
+	randSource := rand.NewSource(time.Now().UnixNano())
+	r := rand.New(randSource)
+	randomNumber := r.Intn(1000000)
+	timeStamp := time.Now().Unix()
+
+	filePath := fmt.Sprintf("./uploads/%d_%d", timeStamp, randomNumber)
+	if err := c.SaveUploadedFile(file, filePath); err != nil {
+		zap.L().Error("save file error: ", zap.Error(err))
+		response.SystemError(c)
+		return
+	}
+
+	absolutePath, err := filepath.Abs(filePath)
+	if err != nil {
+		zap.L().Error("get file path error: ", zap.Error(err))
+		response.SystemError(c)
+		return
+	}
+	zap.L().Info("upload with w3")
+	cmd := exec.Command("w3", "upload", absolutePath, "--json", "--no-wrap")
+
+	//execut w3 upload xxxx
+	var outBuf, errBuf bytes.Buffer
+	cmd.Stdout = &outBuf
+	cmd.Stderr = &errBuf
+	err = cmd.Run()
+	if err != nil {
+		os.Remove(absolutePath)
+		zap.L().Error("upload file error: ", zap.Error(err))
+		response.SystemError(c)
+		return
+	}
+	var jsonData map[string]interface{}
+	err = json.Unmarshal([]byte(outBuf.Bytes()), &jsonData)
+	if err != nil {
+		os.Remove(absolutePath)
+		zap.L().Error("upload file error: ", zap.Error(err))
+		response.SystemError(c)
+		return
+	}
+	os.Remove(absolutePath)
+	response.SuccessWithData(jsonData, c)
+}

powervoting-backend/routers/router.go

@@ -15,9 +15,10 @@
 package routers
 
 import (
-	"github.com/gin-gonic/gin"
 	"powervoting-server/api"
 	"powervoting-server/response"
+
+	"github.com/gin-gonic/gin"
 )
 
 // InitRouters initializes the routers for the power voting API endpoints.
@@ -34,4 +35,5 @@ func InitRouters(r *gin.Engine) {
 
 	powerVotingRouter.GET("/proposal/result", api.VoteResult)
 	powerVotingRouter.GET("/proposal/history", api.VoteHistory)
+	powerVotingRouter.POST("/w3storage/upload", api.W3Upload)
 }

powervoting-backend/w3.txt

@@ -0,0 +1,14 @@
+#after the container has started
+
+#login
+w3 login [email]
+
+# if no space 
+w3 space create [Name] 
+
+# alread create , find  did
+w3 space ls  
+
+#
+w3 space use <did>
+