Remove Sokol (#7224)

Sokol chain is dead: https://blockscout.com/poa/sokol

common/paths/paths.go

@@ -86,8 +86,6 @@ func DataDirForNetwork(datadir string, network string) string {
 		return networkDataDirCheckingLegacy(datadir, "rinkeby")
 	case networkname.GoerliChainName:
 		return networkDataDirCheckingLegacy(datadir, "goerli")
-	case networkname.SokolChainName:
-		return networkDataDirCheckingLegacy(datadir, "sokol")
 	case networkname.MumbaiChainName:
 		return networkDataDirCheckingLegacy(datadir, "mumbai")
 	case networkname.BorMainnetChainName:

consensus/aura/aura.go

@@ -45,7 +45,6 @@ import (
 	"github.com/ledgerwatch/erigon/core/state"
 	"github.com/ledgerwatch/erigon/core/types"
 	"github.com/ledgerwatch/erigon/crypto"
-	"github.com/ledgerwatch/erigon/params"
 	"github.com/ledgerwatch/erigon/rlp"
 	"github.com/ledgerwatch/erigon/rpc"
 )
@@ -209,7 +208,7 @@ func (e *EpochManager) zoomToAfter(chain consensus.ChainHeaderReader, er consens
 	// forks it will only need to be called for the block directly after
 	// epoch transition, in which case it will be O(1) and require a single
 	// DB lookup.
-	lastTransition, ok := epochTransitionFor2(chain, er, hash)
+	lastTransition, ok := epochTransitionFor(chain, er, hash)
 	if !ok {
 		if lastTransition.BlockNumber > DEBUG_LOG_FROM {
 			fmt.Printf("zoom1: %d\n", lastTransition.BlockNumber)
@@ -255,7 +254,7 @@ func (e *EpochManager) zoomToAfter(chain consensus.ChainHeaderReader, er consens
 // /
 // / The block corresponding the the parent hash must be stored already.
 // nolint
-func epochTransitionFor2(chain consensus.ChainHeaderReader, e consensus.EpochReader, parentHash libcommon.Hash) (transition EpochTransition, ok bool) {
+func epochTransitionFor(chain consensus.ChainHeaderReader, e consensus.EpochReader, parentHash libcommon.Hash) (transition EpochTransition, ok bool) {
 	//TODO: probably this version of func doesn't support non-canonical epoch transitions
 	h := chain.GetHeaderByHash(parentHash)
 	if h == nil {
@@ -271,58 +270,6 @@ func epochTransitionFor2(chain consensus.ChainHeaderReader, e consensus.EpochRea
 	return EpochTransition{BlockNumber: num, BlockHash: hash, ProofRlp: transitionProof}, true
 }
 
-// nolint
-func epochTransitionFor(chain consensus.ChainHeaderReader, e consensus.EpochReader, parentHash libcommon.Hash) (transition EpochTransition, ok bool) {
-	// slow path: loop back block by block
-	for {
-		h := chain.GetHeaderByHash(parentHash)
-		if h == nil {
-			return transition, false
-		}
-
-		// look for transition in database.
-		transitionProof, err := e.GetEpoch(h.Hash(), h.Number.Uint64())
-		if err != nil {
-			panic(err)
-		}
-
-		if transitionProof != nil {
-			return EpochTransition{
-				BlockNumber: h.Number.Uint64(),
-				BlockHash:   h.Hash(),
-				ProofRlp:    transitionProof,
-			}, true
-		}
-
-		// canonical hash -> fast breakout:
-		// get the last epoch transition up to this block.
-		//
-		// if `block_hash` is canonical it will only return transitions up to
-		// the parent.
-		canonical := chain.GetHeaderByNumber(h.Number.Uint64())
-		if canonical == nil {
-			return transition, false
-		}
-		//nolint
-		if canonical.Hash() == parentHash {
-			return EpochTransition{
-				BlockNumber: 0,
-				BlockHash:   libcommon.HexToHash("0x5b28c1bfd3a15230c9a46b399cd0f9a6920d432e85381cc6a140b06e8410112f"),
-				ProofRlp:    params.SokolGenesisEpochProof,
-			}, true
-			/* TODO:
-			   return self
-			       .epoch_transitions()
-			       .map(|(_, t)| t)
-			       .take_while(|t| t.block_number <= details.number)
-			       .last();
-			*/
-		}
-
-		parentHash = h.Hash()
-	}
-}
-
 // AuRa
 // nolint
 type AuRa struct {

consensus/aura/aura_test.go

@@ -101,7 +101,7 @@ func TestRewardContract(t *testing.T) {
 	auraDB, require := memdb.NewTestDB(t), require.New(t)
 	engine, err := aura.NewAuRa(nil, auraDB, libcommon.Address{}, test.AuthorityRoundBlockRewardContract)
 	require.NoError(err)
-	m := stages.MockWithGenesisEngine(t, core.SokolGenesisBlock(), engine, false)
+	m := stages.MockWithGenesisEngine(t, core.ChiadoGenesisBlock(), engine, false)
 	m.EnableLogs()
 
 	var accBefore *accounts.Account

consensus/aura/consensusconfig/embed.go

@@ -6,9 +6,6 @@ import (
 	"github.com/ledgerwatch/erigon/params/networkname"
 )
 
-//go:embed poasokol.json
-var Sokol []byte
-
 //go:embed poagnosis.json
 var Gnosis []byte
 
@@ -20,8 +17,6 @@ var Test []byte
 
 func GetConfigByChain(chainName string) []byte {
 	switch chainName {
-	case networkname.SokolChainName:
-		return Sokol
 	case networkname.GnosisChainName:
 		return Gnosis
 	case networkname.ChiadoChainName: