func (s *stats) runtime() *pstats.RuntimeStats {
return &pstats.RuntimeStats{
HeapInUse: proto.Uint64(uint64(getGaugeVal(s.registry, "runtime.MemStats.HeapInuse"))),
HeapTotal: proto.Uint64(uint64(getGaugeVal(s.registry, "runtime.MemStats.TotalAlloc"))),
HeapReleased: proto.Uint64(uint64(getGaugeVal(s.registry, "runtime.MemStats.HeapReleased"))),
LastGCDuration: proto.Uint64(uint64(getGaugeVal(s.registry, "local.GCStats.LastGCDuration"))),
NumGC: proto.Uint32(uint32(getGaugeVal(s.registry, "debug.GCStats.NumGC"))),
NumGoRoutines: proto.Uint32(uint32(getGaugeVal(s.registry, "runtime.NumGoroutine"))),
}
}
// ToProtobuf takes a Error and returns a protobuf error
func ToProtobuf(err Error) *pe.PlatformError {
return &pe.PlatformError{
Type: pe.PlatformError_ErrorType(pe.PlatformError_ErrorType_value[err.Type()]).Enum(),
Code: proto.String(err.Code()),
Description: proto.String(err.Description()),
Context: err.Context(),
HttpCode: proto.Uint32(err.HttpCode()),
}
}
// ConfiguredHttpCaller with more explicit configuration options than simple HttpCaller
func ConfiguredHttpCaller(opts Options) Caller {
tp := &httpclient.Transport{
ConnectTimeout: durationOrDefault(opts.ConnectTimeout, 5*time.Second),
RequestTimeout: durationOrDefault(opts.RequestTimeout, 5*time.Second),
ResponseHeaderTimeout: durationOrDefault(opts.ResponseHeaderTimeout, 5*time.Second),
}
if opts.TlsSkipVerify {
tp.TLSClientConfig = &tls.Config{InsecureSkipVerify: true}
}
httpClient := &http.Client{Transport: tp}
return func(req *client.Request, rsp proto.Message) errors.Error {
u, err := url.Parse(opts.BaseUrl)
q := u.Query()
q.Set("session_id", req.SessionID())
q.Set("service", req.Service())
q.Set("endpoint", req.Endpoint())
u.Path = "/rpc"
u.RawQuery = q.Encode()
var httpReq *http.Request
// send JSON req content-type to thin API as form-encoded data
// send proto req content-type directly as bytes, with proto content type
if req.ContentType() == jsonContentType {
values := make(url.Values)
values.Set("service", req.Service())
values.Set("endpoint", req.Endpoint())
values.Set("request", string(req.Payload()))
httpReq, _ = http.NewRequest("POST", u.String(), bytes.NewReader([]byte(values.Encode())))
httpReq.Header.Set("Content-Type", formEncodedContentType)
} else {
httpReq, _ = http.NewRequest("POST", u.String(), bytes.NewReader(req.Payload()))
httpReq.Header.Set("Content-Type", protoContentType)
}
log.Tracef("[Multiclient] HTTP caller - calling '%s' : content-type '%s'", u.String(), req.ContentType())
httpRsp, err := httpClient.Do(httpReq)
if err != nil {
log.Warnf("[Multiclient] HTTP caller error calling %s.%s via %s : %s", req.Service(), req.Endpoint(), u.String(), err)
return errors.InternalServerError("multiclienthttp.postform", fmt.Sprintf("Error calling %s.%s via %s : %s", req.Service(), req.Endpoint(), u.String(), err))
}
defer httpRsp.Body.Close()
rspBody, err := ioutil.ReadAll(httpRsp.Body)
if err != nil {
return errors.BadResponse("multiclienthttp.readresponse", fmt.Sprintf("Error reading response bytes: %v", err))
}
// what status code?
if httpRsp.StatusCode != 200 {
// deal with error
e := &protoerror.PlatformError{}
var err error
if req.ContentType() == jsonContentType {
jsonErr := &errorBody{}
err = json.Unmarshal(rspBody, jsonErr)
e.Code = proto.String(jsonErr.DottedCode)
e.Context = jsonErr.Context
e.Description = proto.String(jsonErr.Payload)
e.HttpCode = proto.Uint32(uint32(httpRsp.StatusCode))
// this conversion is lossy, since the JSON response for errors, as crafted
// by the "thin API", does not currently include the error type, so we have
// to guess from HTTP status code, but there is no distinct code for "BAD_RESPONSE"
switch httpRsp.StatusCode {
case 400:
e.Type = protoerror.PlatformError_BAD_REQUEST.Enum()
case 403:
e.Type = protoerror.PlatformError_FORBIDDEN.Enum()
case 404:
e.Type = protoerror.PlatformError_NOT_FOUND.Enum()
case 500:
e.Type = protoerror.PlatformError_INTERNAL_SERVER_ERROR.Enum()
case 504:
e.Type = protoerror.PlatformError_TIMEOUT.Enum()
}
} else {
err = proto.Unmarshal(rspBody, e)
}
// some issue understanding error rsp
if err != nil {
return errors.BadResponse("multiclienthttp.unmarshalerr", fmt.Sprintf("Error unmarshaling error response '%s': %v", string(rspBody), err))
}
return errors.FromProtobuf(e)
}
// unmarshal response
if req.ContentType() == jsonContentType {
err = json.Unmarshal(rspBody, rsp)
} else {
err = proto.Unmarshal(rspBody, rsp)
}
if err != nil {
return errors.BadResponse("multiclienthttp.unmarshal", fmt.Sprintf("Error unmarshaling response: %v", err))
}
return nil
}
}
