[#48] client: Refactor EndpointInfo()

Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>

client/netmap.go

@@ -19,6 +19,16 @@ type PrmEndpointInfo struct {
 	prmCommonMeta
 }
 
+func (x *PrmEndpointInfo) buildRequest(c *Client) (*v2netmap.LocalNodeInfoRequest, error) {
+	meta := new(v2session.RequestMetaHeader)
+	writeXHeadersToMeta(x.xHeaders, meta)
+
+	req := new(v2netmap.LocalNodeInfoRequest)
+	req.SetBody(new(v2netmap.LocalNodeInfoRequestBody))
+	c.prepareRequest(req, meta)
+	return req, nil
+}
+
 // ResEndpointInfo group resulting values of EndpointInfo operation.
 type ResEndpointInfo struct {
 	statusRes
@@ -56,62 +66,47 @@ func (x ResEndpointInfo) NodeInfo() netmap.NodeInfo {
 // Return statuses:
 //   - global (see Client docs).
 func (c *Client) EndpointInfo(ctx context.Context, prm PrmEndpointInfo) (*ResEndpointInfo, error) {
-	// form request
+	req, err := prm.buildRequest(c)
-	var req v2netmap.LocalNodeInfoRequest
+	if err != nil {
-
+		return nil, err
-	// init call context
-
-	var (
-		cc  contextCall
-		res ResEndpointInfo
-	)
-
-	c.initCallContext(&cc)
-	cc.meta = prm.prmCommonMeta
-	cc.req = &req
-	cc.statusRes = &res
-	cc.call = func() (responseV2, error) {
-		return rpcapi.LocalNodeInfo(&c.c, &req, client.WithContext(ctx))
-	}
-	cc.result = func(r responseV2) {
-		resp := r.(*v2netmap.LocalNodeInfoResponse)
-
-		body := resp.GetBody()
-
-		const fieldVersion = "version"
-
-		verV2 := body.GetVersion()
-		if verV2 == nil {
-			cc.err = newErrMissingResponseField(fieldVersion)
-			return
-		}
-
-		cc.err = res.version.ReadFromV2(*verV2)
-		if cc.err != nil {
-			cc.err = newErrInvalidResponseField(fieldVersion, cc.err)
-			return
-		}
-
-		const fieldNodeInfo = "node info"
-
-		nodeInfoV2 := body.GetNodeInfo()
-		if nodeInfoV2 == nil {
-			cc.err = newErrMissingResponseField(fieldNodeInfo)
-			return
-		}
-
-		cc.err = res.ni.ReadFromV2(*nodeInfoV2)
-		if cc.err != nil {
-			cc.err = newErrInvalidResponseField(fieldNodeInfo, cc.err)
-			return
-		}
 	}
 
-	// process call
+	if err := signature.SignServiceMessage(&c.prm.key, req); err != nil {
-	if !cc.processCall() {
+		return nil, fmt.Errorf("sign request: %w", err)
-		return nil, cc.err
 	}
 
+	resp, err := rpcapi.LocalNodeInfo(&c.c, req, client.WithContext(ctx))
+	if err != nil {
+		return nil, err
+	}
+
+	var res ResEndpointInfo
+	res.st, err = c.processResponse(resp)
+	if err != nil || !apistatus.IsSuccessful(res.st) {
+		return &res, err
+	}
+
+	body := resp.GetBody()
+
+	const fieldVersion = "version"
+
+	verV2 := body.GetVersion()
+	if verV2 == nil {
+		return nil, newErrMissingResponseField(fieldVersion)
+	}
+	if err := res.version.ReadFromV2(*verV2); err != nil {
+		return nil, newErrInvalidResponseField(fieldVersion, err)
+	}
+
+	const fieldNodeInfo = "node info"
+
+	nodeInfoV2 := body.GetNodeInfo()
+	if nodeInfoV2 == nil {
+		return nil, newErrMissingResponseField(fieldNodeInfo)
+	}
+	if err := res.ni.ReadFromV2(*nodeInfoV2); err != nil {
+		return nil, newErrInvalidResponseField(fieldNodeInfo, err)
+	}
 	return &res, nil
 }