aicra/driver/generic.go

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package driver
import (
"encoding/json"
"fmt"
"git.xdrm.io/go/aicra/err"
"git.xdrm.io/go/aicra/response"
"os/exec"
"strings"
)
// Load implements the Driver interface
func (d *Generic) Load(_path []string, _method string) (func(response.Arguments) response.Response, err.Error) {
/* (1) Build controller path */
path := strings.Join(_path, "-")
if len(path) == 0 {
path = fmt.Sprintf("./controller/ROOT")
} else {
path = fmt.Sprintf("./controller/%s", path)
}
/* (2) Format method */
method := strings.ToUpper(_method)
return func(d response.Arguments) response.Response {
res := response.New()
/* (1) Prepare stdin data */
d["_HTTP_METHOD_"] = method
stdin, err2 := json.Marshal(d)
if err2 != nil {
res.Err = err.UncallableController
return *res
}
/* (2) Try to load command with <stdin> -> stdout */
cmd := exec.Command(path, string(stdin))
stdout, err2 := cmd.Output()
if err2 != nil {
res.Err = err.UncallableController
return *res
}
/* (3) Get output json */
output := make(response.Arguments)
err2 = json.Unmarshal(stdout, output)
res.Err = err.Success
// extract error (success by default or on error)
if outErr, ok := output["error"]; ok {
tmpErr, ok := outErr.(err.Error)
if ok {
res.Err = tmpErr
}
delete(output, "error")
}
/* (4) fill response */
for k, v := range output {
res.Set(k, v)
}
return *res
}, err.Success
}