forked from TrueCloudLab/frostfs-api-go
114 lines
2.9 KiB
Go
114 lines
2.9 KiB
Go
package client
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import (
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"context"
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"github.com/nspcc-dev/neofs-api-go/pkg/netmap"
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"github.com/nspcc-dev/neofs-api-go/v2/client"
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v2netmap "github.com/nspcc-dev/neofs-api-go/v2/netmap"
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v2signature "github.com/nspcc-dev/neofs-api-go/v2/signature"
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"github.com/pkg/errors"
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)
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// EndpointInfo returns attributes, address and public key of the node, specified
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// in client constructor via address or open connection. This can be used as a
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// health check to see if node is alive and responses to requests.
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func (c Client) EndpointInfo(ctx context.Context, opts ...CallOption) (*netmap.NodeInfo, error) {
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switch c.remoteNode.Version.GetMajor() {
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case 2:
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resp, err := c.endpointInfoV2(ctx, opts...)
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if err != nil {
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return nil, err
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}
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return netmap.NewNodeInfoFromV2(resp.GetBody().GetNodeInfo()), nil
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default:
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return nil, unsupportedProtocolErr
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}
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}
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// Epoch returns the epoch number from the local state of the remote host.
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func (c Client) Epoch(ctx context.Context, opts ...CallOption) (uint64, error) {
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switch c.remoteNode.Version.GetMajor() {
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case 2:
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resp, err := c.endpointInfoV2(ctx, opts...)
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if err != nil {
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return 0, err
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}
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return resp.GetMetaHeader().GetEpoch(), nil
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default:
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return 0, unsupportedProtocolErr
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}
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}
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func (c Client) endpointInfoV2(ctx context.Context, opts ...CallOption) (*v2netmap.LocalNodeInfoResponse, error) {
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// apply all available options
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callOptions := c.defaultCallOptions()
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for i := range opts {
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opts[i].apply(&callOptions)
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}
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reqBody := new(v2netmap.LocalNodeInfoRequestBody)
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req := new(v2netmap.LocalNodeInfoRequest)
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req.SetBody(reqBody)
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req.SetMetaHeader(v2MetaHeaderFromOpts(callOptions))
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err := v2signature.SignServiceMessage(c.key, req)
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if err != nil {
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return nil, err
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}
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switch c.remoteNode.Protocol {
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case GRPC:
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cli, err := v2NetmapClientFromOptions(c.opts)
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if err != nil {
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return nil, errors.Wrap(err, "can't create grpc client")
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}
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resp, err := cli.LocalNodeInfo(ctx, req)
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if err != nil {
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return nil, errors.Wrap(err, "transport error")
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}
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err = v2signature.VerifyServiceMessage(resp)
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if err != nil {
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return nil, errors.Wrap(err, "can't verify response message")
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}
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return resp, nil
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default:
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return nil, unsupportedProtocolErr
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}
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}
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func v2NetmapClientFromOptions(opts *clientOptions) (cli *v2netmap.Client, err error) {
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switch {
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case opts.grpcOpts.v2NetmapClient != nil:
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// return value from client cache
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return opts.grpcOpts.v2NetmapClient, nil
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case opts.grpcOpts.conn != nil:
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cli, err = v2netmap.NewClient(v2netmap.WithGlobalOpts(
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client.WithGRPCConn(opts.grpcOpts.conn)),
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)
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case opts.addr != "":
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cli, err = v2netmap.NewClient(v2netmap.WithGlobalOpts(
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client.WithNetworkAddress(opts.addr)),
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)
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default:
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return nil, errors.New("lack of sdk client options to create netmap client")
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}
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// check if client correct and save in cache
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if err != nil {
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return nil, err
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}
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opts.grpcOpts.v2NetmapClient = cli
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return cli, nil
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}
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