feat(zombienet): add zombienet testing to github workflow

.github/workflows/zombienet.yml

@@ -0,0 +1,54 @@
+name: zombienet
+run-name: Zombienet tests
+on:
+  pull_request:
+
+jobs:
+  zombienet-tests:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/setup-go@v3
+        with:
+          go-version: 1.19
+          stable: true
+          check-latest: true
+
+      - name: Set cache variables
+        id: go-cache-paths
+        run: |
+          echo "::set-output name=go-build::$(go env GOCACHE)"
+          echo "::set-output name=go-mod::$(go env GOMODCACHE)"
+      - uses: actions/checkout@v3
+
+      - name: Go build cache
+        uses: actions/cache@v3
+        with:
+          path: ${{ steps.go-cache-paths.outputs.go-build }}
+          key: ${{ runner.os }}-go-build-${{ hashFiles('**/go.sum') }}
+          restore-keys: ${{ runner.os }}-go-build
+
+      - name: Go modules cache
+        uses: actions/cache@v3
+        with:
+          path: ${{ steps.go-cache-paths.outputs.go-mod }}
+          key: ${{ runner.os }}-go-mod-${{ hashFiles('**/go.sum') }}
+          restore-keys: ${{ runner.os }}-go-mod
+
+      - name: Run build
+        run: |
+          make build
+          echo "$HOME/work/gossamer/gossamer/bin" >> $GITHUB_PATH
+      - name: Install Zombienet
+        run: |
+          if [ "$RUNNER_OS" == "Linux" ]; then
+           wget -O /usr/local/bin/zombienet https://github.com/paritytech/zombienet/releases/download/v1.3.41/zombienet-linux-x64
+          elif [ "$RUNNER_OS" == "macOS" ]; then
+           wget -O /usr/local/bin/zombienet https://github.com/paritytech/zombienet/releases/download/v1.3.41/zombienet-macos
+          else
+           echo "Zombienet for $RUNNER_OS is not supported"
+           exit 1
+          fi
+          chmod +x /usr/local/bin/zombienet
+      - name: Zombienet test
+        run: |
+          zombienet test -p native zombienet_tests/functional/0001-basic-network.zndsl

Makefile

@@ -7,6 +7,7 @@ ifndef VERSION
 VERSION=latest
 endif
 FULLDOCKERNAME=$(COMPANY)/$(NAME):$(VERSION)
+OS:=$(shell uname)
 
 .PHONY: help lint test install build clean start docker gossamer build-debug
 all: help
@@ -127,3 +128,17 @@ gossamer: clean build
 ## install: install the gossamer binary in $GOPATH/bin
 install: build
 	mv ./bin/gossamer $(GOPATH)/bin/gossamer
+
+install-zombienet:
+ifeq ($(OS),Darwin)
+	wget -O /usr/local/bin/zombienet https://github.com/paritytech/zombienet/releases/download/v1.3.41/zombienet-macos
+else ifeq ($(OS),Linux)
+		wget -O $(GOPATH)/bin/zombienet https://github.com/paritytech/zombienet/releases/download/v1.3.41/zombienet-linux-x64
+else
+		@echo "Zombienet for $(OS) is not supported"
+		exit 1
+endif
+	chmod a+x $(GOPATH)/bin/zombienet
+
+zombienet-test: install install-zombienet
+	zombienet test -p native zombienet_tests/functional/0001-basic-network.zndsl

cmd/gossamer/flags.go

@@ -314,7 +314,7 @@ var (
 		Aliases: []string{"unsafe-ws-external"}, // unsafe-ws-external is argument used by polkadot node
 		Usage:   "Enable external access to websocket unsafe calls",
 	}
-	// RPCCorsFlag dummy flag provided to conform to polkadot flags
+	// RPCCorsFlag dummy flag provided to conform to polkadot flags, TODO: see issue #3205
 	RPCCorsFlag = cli.StringFlag{
 		Name:  "rpc-cors",
 		Usage: "dummy place holder to conform with polkadot cli flags",
@@ -386,7 +386,7 @@ var (
 // BABE flags
 var (
 	ValidatorFlag = cli.BoolFlag{
-		Name: "validator", // TODO(ed) implement
+		Name: "validator",
 	}
 )
 

dot/network/service.go

@@ -87,6 +87,13 @@ var (
 		Name:      "outbound_total",
 		Help:      "total number of outbound streams",
 	})
+	processStartTimeGauge = promauto.NewGauge(prometheus.GaugeOpts{
+		Namespace: "substrate", // Note: this is using substrate namespace because that is what zombienet uses
+		//  to confirm nodes have started TODO: consider other ways to handle this, see issue #3205
+		Name: "process_start_time_seconds",
+		Help: "gossamer process start seconds unix timestamp, " +
+			"using substrate namespace so zombienet detects node start",
+	})
 )
 
 type (
@@ -333,6 +340,7 @@ func (s *Service) Start() error {
 	logger.Info("started network service with supported protocols " + strings.Join(s.host.protocols(), ", "))
 
 	if s.Metrics.Publish {
+		processStartTimeGauge.Set(float64(time.Now().Unix()))
 		go s.updateMetrics()
 	}
 

zombienet_tests/functional/0001-basic-network.toml

@@ -0,0 +1,22 @@
+[relaychain]
+chain_spec_path = "chain/westend-local/westend-local-spec-raw.json"
+
+chain = "westend-local"
+
+[[relaychain.nodes]]
+name = "alice"
+command = "gossamer"
+validator = true
+args = ["--key alice"]
+
+[[relaychain.nodes]]
+name = "bob"
+command = "gossamer"
+validator = true
+args = ["--key bob"]
+
+[[relaychain.nodes]]
+name = "charlie"
+command = "gossamer"
+validator = true
+args = ["--key charlie"]

zombienet_tests/functional/0001-basic-network.zndsl

@@ -0,0 +1,15 @@
+Description: Small Network test
+Network: ./0001-basic-network.toml
+Creds: config
+
+# metrics
+alice: reports gossamer_network_node_peer_count_total is 2 within 30 seconds
+alice: reports gossamer_network_syncer_is_synced is 1 within 30 seconds
+bob: reports gossamer_network_node_peer_count_total is 2 within 30 seconds
+bob: reports gossamer_network_syncer_is_synced is 1 within 30 seconds
+charlie: reports gossamer_network_node_peer_count_total is 2 within 30 seconds
+charlie: reports gossamer_network_syncer_is_synced is 1 within 30 seconds
+
+alice: log line matches "built block [0-9]+" within 30 seconds
+bob: log line matches "built block [0-9]+" within 30 seconds
+charlie: log line matches "built block [0-9]+" within 30 seconds