Add mekong testnet config

WORKSPACE

@@ -358,6 +358,22 @@ filegroup(
     url = "https://github.com/eth-clients/sepolia/archive/f2c219a93c4491cee3d90c18f2f8e82aed850eab.tar.gz",  # 2024-09-19
 )
 
+http_archive(
+    name = "mekong_testnet",
+    build_file_content = """
+filegroup(
+    name = "configs",
+    srcs = [
+        "network-configs/devnet-0/metadata/config.yaml",
+    ],
+    visibility = ["//visibility:public"],
+)
+""",
+    integrity = "sha256-y8id4VtAmk+geH52V77+UjR4NCTmGzXdtGpAUMkwvPM=",
+    strip_prefix = "mekong-devnets-c144c729c3cb898e1d6bb299d42eeb595809252c",
+    url = "https://github.com/ethpandaops/mekong-devnets/archive/c144c729c3cb898e1d6bb299d42eeb595809252c.tar.gz",  # 2024-11-07
+)
+
 http_archive(
     name = "com_google_protobuf",
     sha256 = "9bd87b8280ef720d3240514f884e56a712f2218f0d693b48050c836028940a42",

config/features/config.go

@@ -141,6 +141,12 @@ func configureTestnet(ctx *cli.Context) error {
 		}
 		applyHoleskyFeatureFlags(ctx)
 		params.UseHoleskyNetworkConfig()
+	} else if ctx.Bool(MekongTestnet.Name) {
+		log.Info("Running on the Mekong Beacon Chain Testnet")
+		if err := params.SetActive(params.MekongConfig().Copy()); err != nil {
+			return err
+		}
+		params.UseMekongNetworkConfig()
 	} else {
 		if ctx.IsSet(cmd.ChainConfigFileFlag.Name) {
 			log.Warn("Running on custom Ethereum network specified in a chain configuration yaml file")

config/features/flags.go

@@ -18,6 +18,11 @@ var (
 		Name:  "holesky",
 		Usage: "Runs Prysm configured for the Holesky test network.",
 	}
+	// MekongTestnet flag for the multiclient Ethereum consensus testnet.
+	MekongTestnet = &cli.BoolFlag{
+		Name:  "mekong",
+		Usage: "Runs Prysm configured for the Mekong test network.",
+	}
 	// Mainnet flag for easier tooling, no-op
 	Mainnet = &cli.BoolFlag{
 		Value: true,
@@ -187,6 +192,7 @@ var ValidatorFlags = append(deprecatedFlags, []cli.Flag{
 	writeWalletPasswordOnWebOnboarding,
 	HoleskyTestnet,
 	SepoliaTestnet,
+	MekongTestnet,
 	Mainnet,
 	dynamicKeyReloadDebounceInterval,
 	attestTimely,
@@ -211,6 +217,7 @@ var BeaconChainFlags = append(deprecatedBeaconFlags, append(deprecatedFlags, []c
 	disableGRPCConnectionLogging,
 	HoleskyTestnet,
 	SepoliaTestnet,
+	MekongTestnet,
 	Mainnet,
 	disablePeerScorer,
 	disableBroadcastSlashingFlag,
@@ -244,4 +251,5 @@ var NetworkFlags = []cli.Flag{
 	Mainnet,
 	SepoliaTestnet,
 	HoleskyTestnet,
+	MekongTestnet,
 }

config/params/BUILD.bazel

@@ -16,6 +16,7 @@ go_library(
         "network_config.go",
         "testnet_e2e_config.go",
         "testnet_holesky_config.go",
+        "testnet_mekong_config.go",
         "testnet_sepolia_config.go",
         "testutils.go",
         "testutils_develop.go",  # keep
@@ -30,6 +31,7 @@ go_library(
         "//math:go_default_library",
         "//runtime/version:go_default_library",
         "@com_github_ethereum_go_ethereum//common:go_default_library",
+        "@com_github_ethereum_go_ethereum//common/hexutil:go_default_library",
         "@com_github_ethereum_go_ethereum//params:go_default_library",
         "@com_github_mohae_deepcopy//:go_default_library",
         "@com_github_pkg_errors//:go_default_library",
@@ -49,6 +51,7 @@ go_test(
         "mainnet_config_test.go",
         "testnet_config_test.go",
         "testnet_holesky_config_test.go",
+        "testnet_mekong_config_test.go",
         "testnet_sepolia_config_test.go",
     ],
     data = glob(["*.yaml"]) + [
@@ -58,6 +61,7 @@ go_test(
         "@consensus_spec_tests_minimal//:test_data",
         "@eth2_networks//:configs",
         "@holesky_testnet//:configs",
+        "@mekong_testnet//:configs",
         "@sepolia_testnet//:configs",
     ],
     embed = [":go_default_library"],

config/params/loader_test.go

@@ -36,6 +36,8 @@ var placeholderFields = []string{
 	"EIP7732_FORK_VERSION",
 	"FIELD_ELEMENTS_PER_BLOB",              // Compile time constant.
 	"KZG_COMMITMENT_INCLUSION_PROOF_DEPTH", // Compile time constant on BlobSidecar.commitment_inclusion_proof.
+	"FULU_FORK_EPOCH",
+	"FULU_FORK_VERSION",
 	"MAX_BLOBS_PER_BLOCK",
 	"MAX_BLOB_COMMITMENTS_PER_BLOCK", // Compile time constant on BeaconBlockBodyDeneb.blob_kzg_commitments.
 	"MAX_BYTES_PER_TRANSACTION",      // Used for ssz of EL transactions. Unused in Prysm.

config/params/testnet_mekong_config_test.go

@@ -0,0 +1,28 @@
+package params_test
+
+import (
+	"path"
+	"testing"
+
+	"github.com/bazelbuild/rules_go/go/tools/bazel"
+	"github.com/prysmaticlabs/prysm/v5/config/params"
+	"github.com/prysmaticlabs/prysm/v5/testing/require"
+)
+
+func TestMekongConfigMatchesUpstreamYaml(t *testing.T) {
+	presetFPs := presetsFilePath(t, "mainnet")
+	mn, err := params.ByName(params.MainnetName)
+	require.NoError(t, err)
+	cfg := mn.Copy()
+	for _, fp := range presetFPs {
+		cfg, err = params.UnmarshalConfigFile(fp, cfg)
+		require.NoError(t, err)
+	}
+	fPath, err := bazel.Runfile("external/mekong_testnet")
+	require.NoError(t, err)
+	configFP := path.Join(fPath, "network-configs/devnet-0/metadata", "config.yaml")
+	pcfg, err := params.UnmarshalConfigFile(configFP, nil)
+	require.NoError(t, err)
+	fields := fieldsFromYamls(t, append(presetFPs, configFP))
+	assertYamlFieldsMatch(t, "mekong", fields, pcfg, params.MekongConfig())
+}

config/params/values.go

@@ -10,4 +10,5 @@ const (
 	MinimalName         = "minimal"
 	SepoliaName         = "sepolia"
 	HoleskyName         = "holesky"
+	MekongName          = "mekong"
 )