unistack-org/micro-client-http
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simplify rsp parse

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Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>
This commit is contained in:
Василий Толстов 2023-03-16 19:16:35 +03:00
parent 0bf8053d72
commit 090100e522
2 changed files with 49 additions and 70 deletions
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60
stream.go
View File

@ -2,11 +2,9 @@ package http
import (
"bufio"
"bytes"
"context"
"fmt"
"io"
"io/ioutil"
"net"
"net/http"
"sync"
@ -121,59 +119,55 @@ func (h *httpStream) Close() error {
func (h *httpStream) parseRsp(ctx context.Context, log logger.Logger, hrsp *http.Response, cf codec.Codec, rsp interface{}, opts client.CallOptions) error {
var err error
var buf []byte
// fast path return
if hrsp.StatusCode == http.StatusNoContent {
return nil
}
select {
case <-ctx.Done():
err = ctx.Err()
default:
// fast path return
if hrsp.StatusCode == http.StatusNoContent {
return nil
if hrsp.Body != nil {
buf, err = io.ReadAll(hrsp.Body)
if err != nil {
if log.V(logger.ErrorLevel) {
log.Errorf(ctx, "failed to read body: %v", err)
}
return errors.InternalServerError("go.micro.client", string(buf))
}
}
if log.V(logger.DebugLevel) {
log.Debugf(ctx, "response %s with %v", buf, hrsp.Header)
}
if hrsp.StatusCode < 400 {
if log.V(logger.DebugLevel) {
buf, rerr := io.ReadAll(hrsp.Body)
log.Debugf(ctx, "response %s with %v", buf, hrsp.Header)
if err != nil {
return errors.InternalServerError("go.micro.client", rerr.Error())
}
hrsp.Body = ioutil.NopCloser(bytes.NewBuffer(buf))
}
if err = cf.ReadBody(hrsp.Body, rsp); err != nil {
if err = cf.Unmarshal(buf, rsp); err != nil {
return errors.InternalServerError("go.micro.client", err.Error())
}
return nil
}
var rerr interface{}
errmap, ok := opts.Context.Value(errorMapKey{}).(map[string]interface{})
if ok && errmap != nil {
if err, ok = errmap[fmt.Sprintf("%d", hrsp.StatusCode)].(error); !ok {
err, ok = errmap["default"].(error)
if rerr, ok = errmap[fmt.Sprintf("%d", hrsp.StatusCode)].(error); !ok {
rerr, ok = errmap["default"].(error)
}
}
if !ok || err == nil {
buf, cerr := io.ReadAll(hrsp.Body)
if log.V(logger.DebugLevel) {
log.Debugf(ctx, "response %s with %v", buf, hrsp.Header)
}
if cerr != nil {
return errors.InternalServerError("go.micro.client", cerr.Error())
}
if !ok || rerr == nil {
return errors.New("go.micro.client", string(buf), int32(hrsp.StatusCode))
}
if log.V(logger.DebugLevel) {
buf, rerr := io.ReadAll(hrsp.Body)
log.Debugf(ctx, "response %s with %v", buf, hrsp.Header)
if err != nil {
return errors.InternalServerError("go.micro.client", rerr.Error())
}
hrsp.Body = ioutil.NopCloser(bytes.NewBuffer(buf))
if cerr := cf.Unmarshal(buf, rerr); cerr != nil {
return errors.InternalServerError("go.micro.client", cerr.Error())
}
if cerr := cf.ReadBody(hrsp.Body, err); cerr != nil {
err = errors.InternalServerError("go.micro.client", cerr.Error())
if err, ok = rerr.(error); !ok {
err = &Error{rerr}
}
}

59
util.go
View File

@ -1,11 +1,9 @@
package http
import (
"bytes"
"context"
"fmt"
"io"
"io/ioutil"
"net/http"
"net/url"
"reflect"
@ -247,45 +245,48 @@ func newTemplate(path string) ([]string, error) {
func (h *httpClient) parseRsp(ctx context.Context, hrsp *http.Response, rsp interface{}, opts client.CallOptions) error {
var err error
var buf []byte
// fast path return
if hrsp.StatusCode == http.StatusNoContent {
return nil
}
select {
case <-ctx.Done():
err = ctx.Err()
default:
// fast path return
if hrsp.StatusCode == http.StatusNoContent {
return nil
}
ct := DefaultContentType
if htype := hrsp.Header.Get("Content-Type"); htype != "" {
ct = htype
}
cf, cerr := h.newCodec(ct)
if hrsp.StatusCode >= 400 && cerr != nil {
var buf []byte
if hrsp.Body != nil {
buf, err = io.ReadAll(hrsp.Body)
if err != nil && h.opts.Logger.V(logger.ErrorLevel) {
if hrsp.Body != nil {
buf, err = io.ReadAll(hrsp.Body)
if err != nil {
if h.opts.Logger.V(logger.ErrorLevel) {
h.opts.Logger.Errorf(ctx, "failed to read body: %v", err)
}
return errors.InternalServerError("go.micro.client", string(buf))
}
}
cf, cerr := h.newCodec(ct)
if cerr != nil {
if h.opts.Logger.V(logger.DebugLevel) {
h.opts.Logger.Debugf(ctx, "response %s with %v", buf, hrsp.Header)
}
// response like text/plain or something else, return original error
return errors.New("go.micro.client", string(buf), int32(hrsp.StatusCode))
} else if cerr != nil {
if h.opts.Logger.V(logger.DebugLevel) {
h.opts.Logger.Debugf(ctx, "response with %v unknown content-type", hrsp.Header, ct)
h.opts.Logger.Debugf(ctx, "response with %v unknown content-type %s", hrsp.Header, ct, buf)
}
return errors.InternalServerError("go.micro.client", cerr.Error())
}
if h.opts.Logger.V(logger.DebugLevel) {
h.opts.Logger.Debugf(ctx, "response %s with %v", buf, hrsp.Header)
}
// succeseful response
if hrsp.StatusCode < 400 {
if err = cf.ReadBody(hrsp.Body, rsp); err != nil {
if err = cf.Unmarshal(buf, rsp); err != nil {
return errors.InternalServerError("go.micro.client", err.Error())
}
return nil
@ -302,26 +303,10 @@ func (h *httpClient) parseRsp(ctx context.Context, hrsp *http.Response, rsp inte
}
if !ok || rerr == nil {
buf, rerr := io.ReadAll(hrsp.Body)
if h.opts.Logger.V(logger.DebugLevel) {
h.opts.Logger.Debugf(ctx, "response %s with %v", buf, hrsp.Header)
}
if rerr != nil {
return errors.InternalServerError("go.micro.client", rerr.Error())
}
return errors.New("go.micro.client", string(buf), int32(hrsp.StatusCode))
}
if h.opts.Logger.V(logger.DebugLevel) {
buf, rerr := io.ReadAll(hrsp.Body)
h.opts.Logger.Debugf(ctx, "response %s with %v", buf, hrsp.Header)
if err != nil {
return errors.InternalServerError("go.micro.client", rerr.Error())
}
hrsp.Body = ioutil.NopCloser(bytes.NewBuffer(buf))
}
if cerr := cf.ReadBody(hrsp.Body, rerr); cerr != nil {
if cerr := cf.Unmarshal(buf, rerr); cerr != nil {
return errors.InternalServerError("go.micro.client", cerr.Error())
}