frostfs-sdk-go/client/netmap.go
Evgenii Stratonikov 1bfa9ecdb0 [#48] client: Remove ctx == nil checks
Much less useful after we made context to be passed explicitly.

Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
2023-04-13 09:04:09 +03:00

270 lines
7.2 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
}
// 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) {
// form request
var req v2netmap.LocalNodeInfoRequest
// 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 !cc.processCall() {
return nil, cc.err
}
return &res, nil
}
// PrmNetworkInfo groups parameters of NetworkInfo operation.
type PrmNetworkInfo struct {
prmCommonMeta
}
// 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) {
// form request
var req v2netmap.NetworkInfoRequest
// init call context
var (
cc contextCall
res ResNetworkInfo
)
c.initCallContext(&cc)
cc.meta = prm.prmCommonMeta
cc.req = &req
cc.statusRes = &res
cc.call = func() (responseV2, error) {
return rpcapi.NetworkInfo(&c.c, &req, client.WithContext(ctx))
}
cc.result = func(r responseV2) {
resp := r.(*v2netmap.NetworkInfoResponse)
const fieldNetInfo = "network info"
netInfoV2 := resp.GetBody().GetNetworkInfo()
if netInfoV2 == nil {
cc.err = newErrMissingResponseField(fieldNetInfo)
return
}
cc.err = res.info.ReadFromV2(*netInfoV2)
if cc.err != nil {
cc.err = newErrInvalidResponseField(fieldNetInfo, cc.err)
return
}
}
// process call
if !cc.processCall() {
return nil, cc.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
}