frostfs-sdk-go/client/netmap.go
Evgenii Stratonikov a16fc40c39 [#48] client: Refactor EndpointInfo()
Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
2023-04-18 09:58:34 +00:00

264 lines
7.6 KiB
Go

package client
import (
"context"
"fmt"
v2netmap "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/netmap"
rpcapi "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/rpc"
"git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/rpc/client"
v2session "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/session"
"git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/signature"
apistatus "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client/status"
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/netmap"
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/version"
)
// PrmEndpointInfo groups parameters of EndpointInfo operation.
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
version version.Version
ni netmap.NodeInfo
}
// LatestVersion returns latest FrostFS API protocol's version in use.
func (x ResEndpointInfo) LatestVersion() version.Version {
return x.version
}
// NodeInfo returns information about the FrostFS node served on the remote endpoint.
func (x ResEndpointInfo) NodeInfo() netmap.NodeInfo {
return x.ni
}
// EndpointInfo requests information about the storage node served on the remote endpoint.
//
// Method can be used as a health check to see if node is alive and responds to requests.
//
// Any client's internal or transport errors are returned as `error`.
// If PrmInit.ResolveFrostFSFailures has been called, unsuccessful
// FrostFS status codes are returned as `error`, otherwise, are included
// in the returned result structure.
//
// Returns an error if parameters are set incorrectly (see PrmEndpointInfo docs).
// Context is required and must not be nil. It is used for network communication.
//
// Exactly one return value is non-nil. Server status return is returned in ResEndpointInfo.
// Reflects all internal errors in second return value (transport problems, response processing, etc.).
//
// Return statuses:
// - global (see Client docs).
func (c *Client) EndpointInfo(ctx context.Context, prm PrmEndpointInfo) (*ResEndpointInfo, error) {
req, err := prm.buildRequest(c)
if err != nil {
return nil, err
}
if err := signature.SignServiceMessage(&c.prm.key, req); err != nil {
return nil, fmt.Errorf("sign request: %w", 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
}
// PrmNetworkInfo groups parameters of NetworkInfo operation.
type PrmNetworkInfo struct {
prmCommonMeta
}
func (x PrmNetworkInfo) buildRequest(c *Client) (*v2netmap.NetworkInfoRequest, error) {
meta := new(v2session.RequestMetaHeader)
writeXHeadersToMeta(x.xHeaders, meta)
var req v2netmap.NetworkInfoRequest
req.SetBody(new(v2netmap.NetworkInfoRequestBody))
c.prepareRequest(&req, meta)
return &req, nil
}
// ResNetworkInfo groups resulting values of NetworkInfo operation.
type ResNetworkInfo struct {
statusRes
info netmap.NetworkInfo
}
// Info returns structured information about the FrostFS network.
func (x ResNetworkInfo) Info() netmap.NetworkInfo {
return x.info
}
// NetworkInfo requests information about the FrostFS network of which the remote server is a part.
//
// Any client's internal or transport errors are returned as `error`.
// If PrmInit.ResolveFrostFSFailures has been called, unsuccessful
// FrostFS status codes are returned as `error`, otherwise, are included
// in the returned result structure.
//
// Returns an error if parameters are set incorrectly (see PrmNetworkInfo docs).
// Context is required and must not be nil. It is used for network communication.
//
// Exactly one return value is non-nil. Server status return is returned in ResNetworkInfo.
// Reflects all internal errors in second return value (transport problems, response processing, etc.).
//
// Return statuses:
// - global (see Client docs).
func (c *Client) NetworkInfo(ctx context.Context, prm PrmNetworkInfo) (*ResNetworkInfo, error) {
req, err := prm.buildRequest(c)
if err != nil {
return nil, err
}
if err := signature.SignServiceMessage(&c.prm.key, req); err != nil {
return nil, fmt.Errorf("sign request: %w", err)
}
resp, err := rpcapi.NetworkInfo(&c.c, req, client.WithContext(ctx))
if err != nil {
return nil, err
}
var res ResNetworkInfo
res.st, err = c.processResponse(resp)
if err != nil || !apistatus.IsSuccessful(res.st) {
return &res, err
}
const fieldNetInfo = "network info"
netInfoV2 := resp.GetBody().GetNetworkInfo()
if netInfoV2 == nil {
return nil, newErrMissingResponseField(fieldNetInfo)
}
if err := res.info.ReadFromV2(*netInfoV2); err != nil {
return nil, newErrInvalidResponseField(fieldNetInfo, err)
}
return &res, nil
}
// PrmNetMapSnapshot groups parameters of NetMapSnapshot operation.
type PrmNetMapSnapshot struct {
}
// ResNetMapSnapshot groups resulting values of NetMapSnapshot operation.
type ResNetMapSnapshot struct {
statusRes
netMap netmap.NetMap
}
// NetMap returns current server's local network map.
func (x ResNetMapSnapshot) NetMap() netmap.NetMap {
return x.netMap
}
// NetMapSnapshot requests current network view of the remote server.
//
// Any client's internal or transport errors are returned as `error`.
// If PrmInit.ResolveFrostFSFailures has been called, unsuccessful
// FrostFS status codes are returned as `error`, otherwise, are included
// in the returned result structure.
//
// Returns an error if parameters are set incorrectly.
// Context is required and MUST NOT be nil. It is used for network communication.
//
// Exactly one return value is non-nil. Server status return is returned in ResNetMapSnapshot.
// Reflects all internal errors in second return value (transport problems, response processing, etc.).
//
// Return statuses:
// - global (see Client docs).
func (c *Client) NetMapSnapshot(ctx context.Context, _ PrmNetMapSnapshot) (*ResNetMapSnapshot, error) {
// form request body
var body v2netmap.SnapshotRequestBody
// form meta header
var meta v2session.RequestMetaHeader
// form request
var req v2netmap.SnapshotRequest
req.SetBody(&body)
c.prepareRequest(&req, &meta)
err := signature.SignServiceMessage(&c.prm.key, &req)
if err != nil {
return nil, fmt.Errorf("sign request: %w", err)
}
resp, err := c.server.netMapSnapshot(ctx, req)
if err != nil {
return nil, err
}
var res ResNetMapSnapshot
res.st, err = c.processResponse(resp)
if err != nil {
return nil, err
}
if !apistatus.IsSuccessful(res.st) {
return &res, nil
}
const fieldNetMap = "network map"
netMapV2 := resp.GetBody().NetMap()
if netMapV2 == nil {
return nil, newErrMissingResponseField(fieldNetMap)
}
err = res.netMap.ReadFromV2(*netMapV2)
if err != nil {
return nil, newErrInvalidResponseField(fieldNetMap, err)
}
return &res, nil
}