SAP NW RFC Connector for GO

this is only a fork, but it seems that origin is very static

all credit for this code goes to @bsrdjan

The saprfc package provides bindings for SAP NW RFC Library, for an easy way of interacting with SAP systems

The goal of this fork is the best possible compatibility with Linux, if you want work with Windows use the original package

ToC
Badges
Platforms and Prerequisites
Install
Getting Started
To Do
References

Badges

automatic CI Tests are not possible since the SAP library SAP NW RFC is not open source

Platforms and Prerequisites

The SAP NW RFC Library is a prerequsite for using the GO RFC connector and must be installed on a same system. It is available on platforms supported by GO, except OSX.

A prerequisite to download SAP NW RFC Library is having a customer or partner account on SAP Service Marketplace . If you are SAP employee please check SAP OSS note 1037575 - Software download authorizations for SAP employees.

SAP NW RFC Library is fully backwards compatible, supporting all NetWeaver systems, from today, down to release R/3 4.0. You can always use the newest version released on Service Marketplace and connect to older systems as well.

Install

To start using SAP NW RFC Connector for GO, you shall:

Install and Configure Golang
Install SAP NW RFC Library for your platform
Install SAPRFC package

Install SAP NW RFC Library

To obtain and install SAP NW RFC Library from SAP Service Marketplace, you can follow the same instructions as for Python or nodejs RFC connectors.
The Download is here, but the SAP page is the worst, maybe it’s better to search for a torrent or ask a friend at SAP.

Install SAPRFC

To install saprfc and dependencies, run following commands:

export CGO_CFLAGS="-I $SAPNWRFC_HOME/include"
export CGO_LDFLAGS="-L $SAPNWRFC_HOME/lib"
go get simonwaldherr.de/go/saprfc
cd $GOPATH/src/simonwaldherr.de/go/saprfc
go build
go install

Getting Started

See the hello_gorfc.go example and saprfc_test.go unit tests.

The GO RFC Connector follows the same principles and the implementation model of Python and nodejs RFC connectors and you may check examples and documentation there as well.

package main
import (
    "fmt"
    "simonwaldherr.de/go/golibs/arg"
    saprfc "simonwaldherr.de/go/saprfc"
    "time"
)
var SAPconnection *saprfc.Connection
func printTable(table string) {
    params := map[string]interface{}{
        "QUERY_TABLE": table,
        "DELIMITER":   ";",
        "NO_DATA":     "",
        "ROWSKIPS":    0,
        "ROWCOUNT":    0,
    }
    r, err := SAPconnection.Call("RFC_READ_TABLE", params)
    if err != nil {
        fmt.Println(err)
        return
    }
    echoStruct := r["DATA"].([]interface{})
    for _, value := range echoStruct {
        values := value.(map[string]interface{})
        for _, val := range values {
            fmt.Println(val)
        }
    }
    return
}
func main() {
    arg.String("table", "USR01", "read from table", time.Second*55)
    arg.String("dest", "", "destination system", time.Second*55)
    arg.String("client", "", "client", time.Second*55)
    arg.String("user", "RFC", "username", time.Second*55)
    arg.String("pass", "", "password", time.Second*55)
    arg.String("lang", "DE", "language", time.Second*55)
    arg.String("host", "127.0.0.1", "SAP server", time.Second*55)
    arg.String("sysnr", "00", "SysNr", time.Second*5)
    arg.String("router", "/H/127.0.0.1/H/", "SAP router", time.Second*55)
    arg.Parse()
    SAPconnection, _ = saprfc.ConnectionFromParams(saprfc.ConnectionParameter{
        Dest:      arg.Get("dest").(string),
        Client:    arg.Get("client").(string),
        User:      arg.Get("user").(string),
        Passwd:    arg.Get("pass").(string),
        Lang:      arg.Get("lang").(string),
        Ashost:    arg.Get("host").(string),
        Sysnr:     arg.Get("sysnr").(string),
        Saprouter: arg.Get("router").(string),
    })
    printTable(arg.Get("table").(string))
    SAPconnection.Close()
}

To Do

Improve the documentation
Fix Windows compiler flags