frostfs-node/cmd/frostfs-cli/internal/client/sdk.go

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package internal
import (
"context"
"crypto/ecdsa"
"crypto/elliptic"
"crypto/rand"
"errors"
"fmt"
"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-cli/internal/common"
"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-cli/internal/commonflags"
commonCmd "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/internal/common"
"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/network"
tracing "git.frostfs.info/TrueCloudLab/frostfs-observability/tracing/grpc"
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client"
"github.com/spf13/cobra"
"github.com/spf13/viper"
"google.golang.org/grpc"
)
var errInvalidEndpoint = errors.New("provided RPC endpoint is incorrect")
// GetSDKClientByFlag returns default frostfs-sdk-go client using the specified flag for the address.
// On error, outputs to stderr of cmd and exits with non-zero code.
func GetSDKClientByFlag(cmd *cobra.Command, key *ecdsa.PrivateKey, endpointFlag string) *client.Client {
cli, err := getSDKClientByFlag(cmd, key, endpointFlag)
if err != nil {
commonCmd.ExitOnErr(cmd, "can't create API client: %w", err)
}
return cli
}
func getSDKClientByFlag(cmd *cobra.Command, key *ecdsa.PrivateKey, endpointFlag string) (*client.Client, error) {
var addr network.Address
err := addr.FromString(viper.GetString(endpointFlag))
if err != nil {
return nil, fmt.Errorf("%v: %w", errInvalidEndpoint, err)
}
return GetSDKClient(cmd.Context(), cmd, key, addr)
}
// GetSDKClient returns default frostfs-sdk-go client.
func GetSDKClient(ctx context.Context, cmd *cobra.Command, key *ecdsa.PrivateKey, addr network.Address) (*client.Client, error) {
var c client.Client
prmInit := client.PrmInit{
Key: *key,
}
prmDial := client.PrmDial{
Endpoint: addr.URIAddr(),
GRPCDialOptions: []grpc.DialOption{
grpc.WithChainUnaryInterceptor(tracing.NewUnaryClientInteceptor()),
grpc.WithChainStreamInterceptor(tracing.NewStreamClientInterceptor()),
},
}
if timeout := viper.GetDuration(commonflags.Timeout); timeout > 0 {
// In CLI we can only set a timeout for the whole operation.
// By also setting stream timeout we ensure that no operation hands
// for too long.
prmDial.DialTimeout = timeout
prmDial.StreamTimeout = timeout
common.PrintVerbose(cmd, "Set request timeout to %s.", timeout)
}
c.Init(prmInit)
if err := c.Dial(ctx, prmDial); err != nil {
return nil, fmt.Errorf("can't init SDK client: %w", err)
}
return &c, nil
}
// GetCurrentEpoch returns current epoch.
func GetCurrentEpoch(ctx context.Context, cmd *cobra.Command, endpoint string) (uint64, error) {
var addr network.Address
if err := addr.FromString(endpoint); err != nil {
return 0, fmt.Errorf("can't parse RPC endpoint: %w", err)
}
key, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
if err != nil {
return 0, fmt.Errorf("can't generate key to sign query: %w", err)
}
c, err := GetSDKClient(ctx, cmd, key, addr)
if err != nil {
return 0, err
}
ni, err := c.NetworkInfo(ctx, client.PrmNetworkInfo{})
if err != nil {
return 0, err
}
return ni.Info().CurrentEpoch(), nil
}