mirror of https://github.com/ouqiang/gocron
81 lines
2.1 KiB
Go
81 lines
2.1 KiB
Go
package client
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import (
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pb "github.com/ouqiang/gocron/modules/rpc/proto"
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"golang.org/x/net/context"
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"fmt"
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"time"
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"errors"
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"github.com/ouqiang/gocron/modules/rpc/grpcpool"
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"google.golang.org/grpc/codes"
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"google.golang.org/grpc"
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"github.com/ouqiang/gocron/modules/logger"
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)
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var (
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errUnavailable = errors.New("无法连接远程服务器")
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)
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func ExecWithRetry(ip string, port int, taskReq *pb.TaskRequest) (string, error) {
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tryTimes := 60
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i := 0
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for i < tryTimes {
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output, err := Exec(ip, port, taskReq)
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if err != errUnavailable {
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return output, err
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}
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i++
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time.Sleep(2 * time.Second)
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}
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return "", errUnavailable
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}
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func Exec(ip string, port int, taskReq *pb.TaskRequest) (string, error) {
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defer func() {
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if err := recover(); err != nil {
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logger.Error("panic#rpc/client.go:Exec#", err)
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}
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} ()
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addr := fmt.Sprintf("%s:%d", ip, port)
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conn, err := grpcpool.Pool.Get(addr)
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if err != nil {
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return "", err
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}
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isConnClosed := false
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defer func() {
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if !isConnClosed {
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grpcpool.Pool.Put(addr, conn)
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}
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}()
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c := pb.NewTaskClient(conn)
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if taskReq.Timeout <= 0 || taskReq.Timeout > 86400 {
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taskReq.Timeout = 86400
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}
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timeout := time.Duration(taskReq.Timeout) * time.Second
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ctx, cancel := context.WithTimeout(context.Background(), timeout)
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defer cancel()
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resp, err := c.Run(ctx, taskReq)
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if err != nil {
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return parseGRPCError(err, conn, &isConnClosed)
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}
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if resp.Error == "" {
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return resp.Output, nil
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}
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return resp.Output, errors.New(resp.Error)
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}
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func parseGRPCError(err error, conn *grpc.ClientConn, connClosed *bool) (string, error) {
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switch grpc.Code(err) {
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case codes.Unavailable, codes.Internal:
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conn.Close()
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*connClosed = true
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return "", errUnavailable
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case codes.DeadlineExceeded:
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return "", errors.New("执行超时, 强制结束")
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}
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return "", err
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}
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