Add tool and script for interop testing (prysmaticlabs#3417)

* add tool and script for interop testing

* identity

* lint

* merge upstream, fix conflict, update script, add comment

* add comma separated support for --peer=

* remove NUM_VALIDATORS, comma fix

* WIP docker image

* use CI builder

* pr feedback

* whatever antoine says

* ignore git in docker

* jobs=auto

* disable remote cache

* try to cache the golang part

* try to cache the golang part

* nvm

* From Antoine with love

* fix

Author: prestonvanloon

.dockerignore

@@ -0,0 +1,2 @@
+bazel-*
+.git

beacon-chain/node/BUILD.bazel

@@ -26,6 +26,7 @@ go_library(
         "//shared/featureconfig:go_default_library",
         "//shared/params:go_default_library",
         "//shared/prometheus:go_default_library",
+        "//shared/sliceutil:go_default_library",
         "//shared/tracing:go_default_library",
         "//shared/version:go_default_library",
         "@com_github_ethereum_go_ethereum//common:go_default_library",

beacon-chain/node/node.go

@@ -34,6 +34,7 @@ import (
 	"github.com/prysmaticlabs/prysm/shared/featureconfig"
 	"github.com/prysmaticlabs/prysm/shared/params"
 	"github.com/prysmaticlabs/prysm/shared/prometheus"
+	"github.com/prysmaticlabs/prysm/shared/sliceutil"
 	"github.com/prysmaticlabs/prysm/shared/tracing"
 	"github.com/prysmaticlabs/prysm/shared/version"
 	"github.com/sirupsen/logrus"
@@ -213,7 +214,7 @@ func (b *BeaconNode) registerP2P(ctx *cli.Context) error {
 
 	svc, err := p2p.NewService(&p2p.Config{
 		NoDiscovery:       ctx.GlobalBool(cmd.NoDiscovery.Name),
-		StaticPeers:       ctx.GlobalStringSlice(cmd.StaticPeers.Name),
+		StaticPeers:       sliceutil.SplitCommaSeparated(ctx.GlobalStringSlice(cmd.StaticPeers.Name)),
 		BootstrapNodeAddr: bootnodeENR,
 		RelayNodeAddr:     ctx.GlobalString(cmd.RelayNode.Name),
 		HostAddress:       ctx.GlobalString(cmd.P2PHost.Name),

interop.Dockerfile

@@ -0,0 +1,24 @@
+FROM gcr.io/prysmaticlabs/build-agent AS builder
+
+WORKDIR /workspace
+
+COPY . /workspace/.
+
+# Build binaries for minimal configuration.
+RUN bazel build --define ssz=minimal --jobs=auto --remote_cache= \
+  //beacon-chain \
+  //validator \
+  //tools/interop/convert-keys
+
+
+FROM gcr.io/whiteblock/base:ubuntu1804
+
+COPY --from=builder /workspace/bazel-bin/beacon-chain/linux_amd64_stripped/beacon-chain .
+COPY --from=builder /workspace/bazel-bin/validator/linux_amd64_pure_stripped/validator .
+COPY --from=builder /workspace/bazel-bin/tools/interop/convert-keys/linux_amd64_stripped/convert-keys .
+
+RUN mkdir /launch
+
+COPY scripts/interop_start.sh /launch/start.sh
+
+ENTRYPOINT ["start.sh"]

scripts/interop_start.sh

@@ -0,0 +1,93 @@
+#!/bin/bash
+
+"""
+2019/09/08 -- Interop start script.
+This script is intended for dockerfile deployment for interop testing.
+This script is fragile and subject to break as flags change.
+Use at your own risk!
+
+
+Use with interop.Dockerfile from the workspace root:
+
+docker build -f interop.Dockerfile .
+"""
+
+# Flags
+IDENTITY="" # P2P private key
+PEERS="" # Comma separated list of peers
+GEN_STATE="" # filepath to ssz encoded state.
+PORT="8000" # port to serve p2p traffic
+YAML_KEY_FILE="" # Path to yaml keyfile as defined here: https://github.com/ethereum/eth2.0-pm/tree/master/interop/mocked_start
+
+# Constants
+BEACON_LOG_FILE="/tmp/beacon.log"
+VALIDATOR_LOG_FILE="/tmp/validator.log"
+
+usage() {
+    echo "--identity=<identity>"
+    echo "--peer=<peer>"
+    echo "--num-validators=<number>"
+    echo "--gen-state=<file path>"
+    port "--port=<port number>"
+}
+
+while [ "$1" != "" ];
+do
+    PARAM=`echo $1 | awk -F= '{print $1}'`
+    VALUE=`echo $1 | sed 's/^[^=]*=//g'`
+
+    case $PARAM in
+        --identity)
+            IDENTITY=$VALUE
+            ;;
+        --peers)
+            PEERS+=",$VALUE"
+            ;;
+        --validator-keys)
+            YAML_KEY_FILE=$VALUE
+            ;;
+        --gen-state)
+            GEN_STATE=$VALUE
+            ;;
+        --port)
+            PORT=$VALUE
+            ;;
+        --help)
+            usage
+            exit
+            ;;
+        *)
+            echo "ERROR: unknown parameter \"$PARAM\""
+            usage
+            exit 1
+            ;;
+    esac
+    shift
+done
+
+
+echo "Converting hex yaml keys to a format that Prysm understands"
+
+# Expect YAML keys in hex encoded format. Convert this into the format the the validator already understands.
+./convert-keys $YAML_KEY_FILE /tmp/keys.json
+
+echo "Starting beacon chain and logging to $BEACON_LOG_FILE"
+
+BEACON_FLAGS="--bootstrap-node= \
+  --deposit-contract=0xD775140349E6A5D12524C6ccc3d6A1d4519D4029 \
+  --p2p-port=$PORT \
+  --peer=$PEERS \
+  --interop-genesis-state=$GEN_STATE \
+  --p2p-priv-key=$IDENTITY \
+  --log-file=$BEACON_LOG_FILE"
+
+./beacon-chain $BEACON_FLAGS &
+
+echo "Starting validator client and logging to $VALIDATOR_LOG_FILE"
+
+VALIDATOR_FLAGS="--monitoring-port=9091 \
+  --unencrypted-keys /tmp/keys.json \
+  --log-file=$VALIDATOR_LOG_FILE
+
+./validator- $VALIDATOR_FLAGS &
+

shared/sliceutil/slice.go

@@ -1,5 +1,9 @@
 package sliceutil
 
+import (
+	"strings"
+)
+
 // SubsetUint64 returns true if the first array is
 // completely contained in the second array with time
 // complexity of approximately o(n).
@@ -259,3 +263,12 @@ func IntersectionByteSlices(s ...[][]byte) [][]byte {
 	}
 	return inter
 }
+
+// SplitCommaSeparated values from the list. Example: []string{"a,b", "c,d"} becomes []string{"a", "b", "c", "d"}.
+func SplitCommaSeparated(arr []string) []string {
+	var result []string
+	for _, val := range arr {
+		result = append(result, strings.Split(val, ",")...)
+	}
+	return result
+}

shared/sliceutil/slice_test.go

@@ -352,3 +352,29 @@ func TestIntersectionByteSlices(t *testing.T) {
 		}
 	}
 }
+
+func TestSplitCommaSeparated(t *testing.T) {
+	tests := []struct {
+		input  []string
+		output []string
+	}{
+		{
+			input:  []string{"a,b", "c,d"},
+			output: []string{"a", "b", "c", "d"},
+		},
+		{
+			input:  []string{"a", "b,c,d"},
+			output: []string{"a", "b", "c", "d"},
+		},
+		{
+			input:  []string{"a", "b", "c"},
+			output: []string{"a", "b", "c"},
+		},
+	}
+
+	for _, tt := range tests {
+		if result := SplitCommaSeparated(tt.input); !reflect.DeepEqual(result, tt.output) {
+			t.Errorf("SplitCommaSeparated(%v) = %v; wanted %v", tt.input, result, tt.output)
+		}
+	}
+}

tools/interop/convert-keys/BUILD.bazel

@@ -0,0 +1,18 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_binary", "go_library")
+
+go_library(
+    name = "go_default_library",
+    srcs = ["main.go"],
+    importpath = "github.com/prysmaticlabs/prysm/tools/interop/convert-keys",
+    visibility = ["//visibility:public"],
+    deps = [
+        "//tools/unencrypted-keys-gen:go_default_library",
+        "@in_gopkg_yaml_v2//:go_default_library",
+    ],
+)
+
+go_binary(
+    name = "convert-keys",
+    embed = [":go_default_library"],
+    visibility = ["//visibility:public"],
+)

tools/interop/convert-keys/main.go

@@ -0,0 +1,65 @@
+// Used for converting keys.yaml files from eth2.0-pm for interop testing.
+// See: https://github.com/ethereum/eth2.0-pm/tree/master/interop/mocked_start
+//
+// This code can be discarded after interop testing.
+package main
+
+import (
+	"encoding/hex"
+	"fmt"
+	"io/ioutil"
+	"log"
+	"os"
+
+	"gopkg.in/yaml.v2"
+	keygen "github.com/prysmaticlabs/prysm/tools/unencrypted-keys-gen"
+)
+
+// KeyPair with hex encoded data.
+type KeyPair struct {
+	Priv string `yaml:"privkey"`
+	Pub  string `yaml:"pubkey"`
+}
+
+// KeyPairs represent the data format in the upstream yaml.
+type KeyPairs []KeyPair
+
+func main() {
+	if len(os.Args) < 3 {
+		fmt.Println("Usage: convert-keys path/to/keys.yaml path/to/output.json")
+		return
+	}
+	inFile := os.Args[1]
+
+	in, err := ioutil.ReadFile(inFile)
+	if err != nil {
+		log.Fatalf("Failed to read file %s: %v", inFile, err)
+	}
+	data := make(KeyPairs, 0)
+	if err := yaml.Unmarshal(in, &data); err != nil {
+		log.Fatalf("Failed to unmarshal yaml: %v", err)
+	}
+
+	out := &keygen.UnencryptedKeysContainer{}
+	for _, key := range data {
+		pk, err := hex.DecodeString(key.Priv[2:])
+		if err != nil {
+			log.Fatalf("Failed to decode hex string %s: %v", key.Priv, err)
+		}
+
+		out.Keys = append(out.Keys, &keygen.UnencryptedKeys{
+			ValidatorKey: pk,
+			WithdrawalKey: pk,
+		})
+	}
+
+	outFile, err := os.Create(os.Args[2])
+	if err != nil {
+		log.Fatalf("Failed to create file at %s: %v", os.Args[2], err)
+	}
+	defer outFile.Close()
+	if err := keygen.SaveUnencryptedKeysToFile(outFile, out); err != nil {
+		log.Fatalf("Failed to save %v", err)
+	}
+	log.Printf("Wrote %s\n", os.Args[2])
+}

tools/unencrypted-keys-gen/BUILD.bazel

@@ -4,7 +4,9 @@ go_library(
     name = "go_default_library",
     srcs = ["main.go"],
     importpath = "github.com/prysmaticlabs/prysm/tools/unencrypted-keys-gen",
-    visibility = ["//visibility:private"],
+    visibility = [
+        "//tools/interop/convert-keys:__pkg__",
+    ],
     deps = [
         "//shared/bls:go_default_library",
     ],

tools/unencrypted-keys-gen/main.go

@@ -18,11 +18,13 @@ var (
 	overwrite  = flag.Bool("overwrite", false, "If the key file exists, it will be overwritten")
 )
 
-type unencryptedKeysContainer struct {
-	Keys []*unencryptedKeys `json:"keys"`
+// UnencryptedKeysContainer defines the structure of the unecrypted key JSON file.
+type UnencryptedKeysContainer struct {
+	Keys []*UnencryptedKeys `json:"keys"`
 }
 
-type unencryptedKeys struct {
+// UnencryptedKeys is the inner struct of the JSON file.
+type UnencryptedKeys struct {
 	ValidatorKey  []byte `json:"validator_key"`
 	WithdrawalKey []byte `json:"withdrawal_key"`
 }
@@ -53,14 +55,14 @@ func main() {
 	}()
 
 	ctnr := generateUnencryptedKeys(rand.Reader)
-	if err := saveUnencryptedKeysToFile(file, ctnr); err != nil {
+	if err := SaveUnencryptedKeysToFile(file, ctnr); err != nil {
 		log.Fatal(err)
 	}
 }
 
-func generateUnencryptedKeys(r io.Reader) *unencryptedKeysContainer {
-	ctnr := &unencryptedKeysContainer{
-		Keys: make([]*unencryptedKeys, *numKeys),
+func generateUnencryptedKeys(r io.Reader) *UnencryptedKeysContainer {
+	ctnr := &UnencryptedKeysContainer{
+		Keys: make([]*UnencryptedKeys, *numKeys),
 	}
 	for i := 0; i < *numKeys; i++ {
 		signingKey, err := bls.RandKey(r)
@@ -71,15 +73,16 @@ func generateUnencryptedKeys(r io.Reader) *unencryptedKeysContainer {
 		if err != nil {
 			log.Fatal(err)
 		}
-		ctnr.Keys[i] = &unencryptedKeys{
+		ctnr.Keys[i] = &UnencryptedKeys{
 			ValidatorKey:  signingKey.Marshal(),
 			WithdrawalKey: withdrawalKey.Marshal(),
 		}
 	}
 	return ctnr
 }
 
-func saveUnencryptedKeysToFile(w io.Writer, ctnr *unencryptedKeysContainer) error {
+// SaveUnencryptedKeysToFile JSON encodes the container and writes to the writer.
+func SaveUnencryptedKeysToFile(w io.Writer, ctnr *UnencryptedKeysContainer) error {
 	enc, err := json.Marshal(ctnr)
 	if err != nil {
 		log.Fatal(err)

tools/unencrypted-keys-gen/main_test.go

@@ -11,11 +11,11 @@ import (
 func TestSavesUnencryptedKeys(t *testing.T) {
 	ctnr := generateUnencryptedKeys(rand.Reader)
 	buf := new(bytes.Buffer)
-	if err := saveUnencryptedKeysToFile(buf, ctnr); err != nil {
+	if err := SaveUnencryptedKeysToFile(buf, ctnr); err != nil {
 		t.Fatal(err)
 	}
 	enc := buf.Bytes()
-	dec := &unencryptedKeysContainer{}
+	dec := &UnencryptedKeysContainer{}
 	if err := json.Unmarshal(enc, dec); err != nil {
 		t.Fatal(err)
 	}