mirror of
https://github.com/OffchainLabs/prysm.git
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99a8d0bac6
* Improve `NewServiceRegistry` documentation. * Improve `README.md`. * Improve readability of `registerValidatorService`. * Move `log` in `main.go`. Since `log` is only used in `main.go`. * Clean Tos. * `DefaultDataDir`: Use `switch` instead of `if/elif`. * `ReadPassword`: Remove unused receiver. * `validator/main.go`: Clean. * `WarnIfPlatformNotSupported`: Add Mac OSX ARM64. * `runner.go`: Use idiomatic `err` handling. * `waitForChainStart`: Avoid `chainStartResponse`mutation. * `WaitForChainStart`: Reduce cognitive complexity. * Logs: `powchain` ==> `execution`.
79 lines
2.3 KiB
Go
79 lines
2.3 KiB
Go
package beacon_api
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import (
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"context"
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"net/http"
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"strconv"
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"time"
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"github.com/ethereum/go-ethereum/common/hexutil"
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"github.com/pkg/errors"
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"github.com/prysmaticlabs/prysm/v4/beacon-chain/rpc/eth/beacon"
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"github.com/prysmaticlabs/prysm/v4/network/httputil"
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ethpb "github.com/prysmaticlabs/prysm/v4/proto/prysm/v1alpha1"
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)
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type GenesisProvider interface {
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GetGenesis(ctx context.Context) (*beacon.Genesis, error)
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}
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type beaconApiGenesisProvider struct {
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jsonRestHandler JsonRestHandler
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}
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func (c beaconApiValidatorClient) waitForChainStart(ctx context.Context) (*ethpb.ChainStartResponse, error) {
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genesis, err := c.genesisProvider.GetGenesis(ctx)
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for err != nil {
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jsonErr := &httputil.DefaultJsonError{}
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httpNotFound := errors.As(err, &jsonErr) && jsonErr.Code == http.StatusNotFound
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if !httpNotFound {
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return nil, errors.Wrap(err, "failed to get genesis data")
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}
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// Error 404 means that the chain genesis info is not yet known, so we query it every second until it's ready
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select {
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case <-time.After(time.Second):
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genesis, err = c.genesisProvider.GetGenesis(ctx)
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case <-ctx.Done():
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return nil, errors.New("context canceled")
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}
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}
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genesisTime, err := strconv.ParseUint(genesis.GenesisTime, 10, 64)
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if err != nil {
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return nil, errors.Wrapf(err, "failed to parse genesis time: %s", genesis.GenesisTime)
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}
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if !validRoot(genesis.GenesisValidatorsRoot) {
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return nil, errors.Errorf("invalid genesis validators root: %s", genesis.GenesisValidatorsRoot)
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}
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genesisValidatorRoot, err := hexutil.Decode(genesis.GenesisValidatorsRoot)
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if err != nil {
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return nil, errors.Wrap(err, "failed to decode genesis validators root")
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}
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chainStartResponse := ðpb.ChainStartResponse{
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Started: true,
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GenesisTime: genesisTime,
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GenesisValidatorsRoot: genesisValidatorRoot,
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}
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return chainStartResponse, nil
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}
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// GetGenesis gets the genesis information from the beacon node via the /eth/v1/beacon/genesis endpoint
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func (c beaconApiGenesisProvider) GetGenesis(ctx context.Context) (*beacon.Genesis, error) {
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genesisJson := &beacon.GetGenesisResponse{}
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if err := c.jsonRestHandler.Get(ctx, "/eth/v1/beacon/genesis", genesisJson); err != nil {
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return nil, err
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}
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if genesisJson.Data == nil {
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return nil, errors.New("genesis data is nil")
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}
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return genesisJson.Data, nil
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}
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