576 lines
18 KiB
Go
576 lines
18 KiB
Go
// Copyright 2015 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package node
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import (
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"errors"
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"io/ioutil"
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"os"
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"reflect"
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"testing"
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"time"
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"github.com/ethereum/go-ethereum/crypto"
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"github.com/ethereum/go-ethereum/p2p"
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"github.com/ethereum/go-ethereum/rpc"
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)
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var (
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testNodeKey, _ = crypto.GenerateKey()
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)
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func testNodeConfig() *Config {
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return &Config{
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Name: "test node",
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P2P: p2p.Config{PrivateKey: testNodeKey},
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}
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}
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// Tests that an empty protocol stack can be started, restarted and stopped.
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func TestNodeLifeCycle(t *testing.T) {
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stack, err := New(testNodeConfig())
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if err != nil {
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t.Fatalf("failed to create protocol stack: %v", err)
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}
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// Ensure that a stopped node can be stopped again
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for i := 0; i < 3; i++ {
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if err := stack.Stop(); err != ErrNodeStopped {
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t.Fatalf("iter %d: stop failure mismatch: have %v, want %v", i, err, ErrNodeStopped)
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}
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}
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// Ensure that a node can be successfully started, but only once
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if err := stack.Start(); err != nil {
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t.Fatalf("failed to start node: %v", err)
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}
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if err := stack.Start(); err != ErrNodeRunning {
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t.Fatalf("start failure mismatch: have %v, want %v ", err, ErrNodeRunning)
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}
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// Ensure that a node can be restarted arbitrarily many times
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for i := 0; i < 3; i++ {
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if err := stack.Restart(); err != nil {
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t.Fatalf("iter %d: failed to restart node: %v", i, err)
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}
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}
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// Ensure that a node can be stopped, but only once
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if err := stack.Stop(); err != nil {
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t.Fatalf("failed to stop node: %v", err)
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}
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if err := stack.Stop(); err != ErrNodeStopped {
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t.Fatalf("stop failure mismatch: have %v, want %v ", err, ErrNodeStopped)
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}
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}
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// Tests that if the data dir is already in use, an appropriate error is returned.
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func TestNodeUsedDataDir(t *testing.T) {
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// Create a temporary folder to use as the data directory
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dir, err := ioutil.TempDir("", "")
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if err != nil {
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t.Fatalf("failed to create temporary data directory: %v", err)
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}
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defer os.RemoveAll(dir)
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// Create a new node based on the data directory
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original, err := New(&Config{DataDir: dir})
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if err != nil {
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t.Fatalf("failed to create original protocol stack: %v", err)
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}
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if err := original.Start(); err != nil {
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t.Fatalf("failed to start original protocol stack: %v", err)
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}
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defer original.Stop()
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// Create a second node based on the same data directory and ensure failure
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duplicate, err := New(&Config{DataDir: dir})
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if err != nil {
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t.Fatalf("failed to create duplicate protocol stack: %v", err)
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}
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if err := duplicate.Start(); err != ErrDatadirUsed {
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t.Fatalf("duplicate datadir failure mismatch: have %v, want %v", err, ErrDatadirUsed)
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}
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}
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// Tests whether services can be registered and duplicates caught.
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func TestServiceRegistry(t *testing.T) {
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stack, err := New(testNodeConfig())
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if err != nil {
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t.Fatalf("failed to create protocol stack: %v", err)
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}
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// Register a batch of unique services and ensure they start successfully
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services := []ServiceConstructor{NewNoopServiceA, NewNoopServiceB, NewNoopServiceC}
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for i, constructor := range services {
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if err := stack.Register(constructor); err != nil {
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t.Fatalf("service #%d: registration failed: %v", i, err)
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}
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}
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if err := stack.Start(); err != nil {
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t.Fatalf("failed to start original service stack: %v", err)
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}
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if err := stack.Stop(); err != nil {
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t.Fatalf("failed to stop original service stack: %v", err)
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}
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// Duplicate one of the services and retry starting the node
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if err := stack.Register(NewNoopServiceB); err != nil {
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t.Fatalf("duplicate registration failed: %v", err)
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}
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if err := stack.Start(); err == nil {
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t.Fatalf("duplicate service started")
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} else {
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if _, ok := err.(*DuplicateServiceError); !ok {
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t.Fatalf("duplicate error mismatch: have %v, want %v", err, DuplicateServiceError{})
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}
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}
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}
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// Tests that registered services get started and stopped correctly.
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func TestServiceLifeCycle(t *testing.T) {
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stack, err := New(testNodeConfig())
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if err != nil {
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t.Fatalf("failed to create protocol stack: %v", err)
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}
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// Register a batch of life-cycle instrumented services
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services := map[string]InstrumentingWrapper{
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"A": InstrumentedServiceMakerA,
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"B": InstrumentedServiceMakerB,
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"C": InstrumentedServiceMakerC,
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}
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started := make(map[string]bool)
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stopped := make(map[string]bool)
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for id, maker := range services {
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id := id // Closure for the constructor
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constructor := func(*ServiceContext) (Service, error) {
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return &InstrumentedService{
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startHook: func(*p2p.Server) { started[id] = true },
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stopHook: func() { stopped[id] = true },
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}, nil
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}
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if err := stack.Register(maker(constructor)); err != nil {
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t.Fatalf("service %s: registration failed: %v", id, err)
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}
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}
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// Start the node and check that all services are running
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if err := stack.Start(); err != nil {
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t.Fatalf("failed to start protocol stack: %v", err)
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}
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for id := range services {
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if !started[id] {
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t.Fatalf("service %s: freshly started service not running", id)
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}
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if stopped[id] {
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t.Fatalf("service %s: freshly started service already stopped", id)
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}
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}
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// Stop the node and check that all services have been stopped
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if err := stack.Stop(); err != nil {
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t.Fatalf("failed to stop protocol stack: %v", err)
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}
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for id := range services {
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if !stopped[id] {
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t.Fatalf("service %s: freshly terminated service still running", id)
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}
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}
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}
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// Tests that services are restarted cleanly as new instances.
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func TestServiceRestarts(t *testing.T) {
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stack, err := New(testNodeConfig())
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if err != nil {
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t.Fatalf("failed to create protocol stack: %v", err)
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}
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// Define a service that does not support restarts
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var (
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running bool
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started int
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)
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constructor := func(*ServiceContext) (Service, error) {
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running = false
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return &InstrumentedService{
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startHook: func(*p2p.Server) {
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if running {
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panic("already running")
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}
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running = true
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started++
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},
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}, nil
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}
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// Register the service and start the protocol stack
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if err := stack.Register(constructor); err != nil {
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t.Fatalf("failed to register the service: %v", err)
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}
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if err := stack.Start(); err != nil {
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t.Fatalf("failed to start protocol stack: %v", err)
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}
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defer stack.Stop()
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if !running || started != 1 {
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t.Fatalf("running/started mismatch: have %v/%d, want true/1", running, started)
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}
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// Restart the stack a few times and check successful service restarts
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for i := 0; i < 3; i++ {
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if err := stack.Restart(); err != nil {
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t.Fatalf("iter %d: failed to restart stack: %v", i, err)
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}
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}
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if !running || started != 4 {
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t.Fatalf("running/started mismatch: have %v/%d, want true/4", running, started)
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}
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}
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// Tests that if a service fails to initialize itself, none of the other services
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// will be allowed to even start.
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func TestServiceConstructionAbortion(t *testing.T) {
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stack, err := New(testNodeConfig())
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if err != nil {
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t.Fatalf("failed to create protocol stack: %v", err)
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}
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// Define a batch of good services
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services := map[string]InstrumentingWrapper{
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"A": InstrumentedServiceMakerA,
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"B": InstrumentedServiceMakerB,
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"C": InstrumentedServiceMakerC,
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}
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started := make(map[string]bool)
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for id, maker := range services {
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id := id // Closure for the constructor
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constructor := func(*ServiceContext) (Service, error) {
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return &InstrumentedService{
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startHook: func(*p2p.Server) { started[id] = true },
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}, nil
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}
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if err := stack.Register(maker(constructor)); err != nil {
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t.Fatalf("service %s: registration failed: %v", id, err)
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}
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}
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// Register a service that fails to construct itself
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failure := errors.New("fail")
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failer := func(*ServiceContext) (Service, error) {
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return nil, failure
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}
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if err := stack.Register(failer); err != nil {
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t.Fatalf("failer registration failed: %v", err)
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}
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// Start the protocol stack and ensure none of the services get started
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for i := 0; i < 100; i++ {
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if err := stack.Start(); err != failure {
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t.Fatalf("iter %d: stack startup failure mismatch: have %v, want %v", i, err, failure)
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}
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for id := range services {
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if started[id] {
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t.Fatalf("service %s: started should not have", id)
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}
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delete(started, id)
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}
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}
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}
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// Tests that if a service fails to start, all others started before it will be
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// shut down.
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func TestServiceStartupAbortion(t *testing.T) {
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stack, err := New(testNodeConfig())
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if err != nil {
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t.Fatalf("failed to create protocol stack: %v", err)
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}
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// Register a batch of good services
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services := map[string]InstrumentingWrapper{
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"A": InstrumentedServiceMakerA,
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"B": InstrumentedServiceMakerB,
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"C": InstrumentedServiceMakerC,
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}
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started := make(map[string]bool)
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stopped := make(map[string]bool)
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for id, maker := range services {
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id := id // Closure for the constructor
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constructor := func(*ServiceContext) (Service, error) {
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return &InstrumentedService{
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startHook: func(*p2p.Server) { started[id] = true },
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stopHook: func() { stopped[id] = true },
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}, nil
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}
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if err := stack.Register(maker(constructor)); err != nil {
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t.Fatalf("service %s: registration failed: %v", id, err)
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}
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}
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// Register a service that fails to start
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failure := errors.New("fail")
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failer := func(*ServiceContext) (Service, error) {
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return &InstrumentedService{
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start: failure,
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}, nil
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}
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if err := stack.Register(failer); err != nil {
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t.Fatalf("failer registration failed: %v", err)
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}
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// Start the protocol stack and ensure all started services stop
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for i := 0; i < 100; i++ {
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if err := stack.Start(); err != failure {
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t.Fatalf("iter %d: stack startup failure mismatch: have %v, want %v", i, err, failure)
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}
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for id := range services {
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if started[id] && !stopped[id] {
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t.Fatalf("service %s: started but not stopped", id)
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}
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delete(started, id)
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delete(stopped, id)
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}
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}
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}
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// Tests that even if a registered service fails to shut down cleanly, it does
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// not influece the rest of the shutdown invocations.
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func TestServiceTerminationGuarantee(t *testing.T) {
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stack, err := New(testNodeConfig())
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if err != nil {
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t.Fatalf("failed to create protocol stack: %v", err)
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}
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// Register a batch of good services
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services := map[string]InstrumentingWrapper{
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"A": InstrumentedServiceMakerA,
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"B": InstrumentedServiceMakerB,
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"C": InstrumentedServiceMakerC,
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}
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started := make(map[string]bool)
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stopped := make(map[string]bool)
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for id, maker := range services {
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id := id // Closure for the constructor
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constructor := func(*ServiceContext) (Service, error) {
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return &InstrumentedService{
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startHook: func(*p2p.Server) { started[id] = true },
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stopHook: func() { stopped[id] = true },
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}, nil
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}
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if err := stack.Register(maker(constructor)); err != nil {
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t.Fatalf("service %s: registration failed: %v", id, err)
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}
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}
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// Register a service that fails to shot down cleanly
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failure := errors.New("fail")
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failer := func(*ServiceContext) (Service, error) {
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return &InstrumentedService{
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stop: failure,
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}, nil
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}
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if err := stack.Register(failer); err != nil {
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t.Fatalf("failer registration failed: %v", err)
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}
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// Start the protocol stack, and ensure that a failing shut down terminates all
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for i := 0; i < 100; i++ {
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// Start the stack and make sure all is online
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if err := stack.Start(); err != nil {
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t.Fatalf("iter %d: failed to start protocol stack: %v", i, err)
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}
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for id := range services {
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if !started[id] {
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t.Fatalf("iter %d, service %s: service not running", i, id)
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}
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if stopped[id] {
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t.Fatalf("iter %d, service %s: service already stopped", i, id)
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}
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}
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// Stop the stack, verify failure and check all terminations
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err := stack.Stop()
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if err, ok := err.(*StopError); !ok {
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t.Fatalf("iter %d: termination failure mismatch: have %v, want StopError", i, err)
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} else {
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failer := reflect.TypeOf(&InstrumentedService{})
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if err.Services[failer] != failure {
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t.Fatalf("iter %d: failer termination failure mismatch: have %v, want %v", i, err.Services[failer], failure)
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}
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if len(err.Services) != 1 {
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t.Fatalf("iter %d: failure count mismatch: have %d, want %d", i, len(err.Services), 1)
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}
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}
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for id := range services {
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if !stopped[id] {
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t.Fatalf("iter %d, service %s: service not terminated", i, id)
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}
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delete(started, id)
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delete(stopped, id)
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}
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}
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}
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// TestServiceRetrieval tests that individual services can be retrieved.
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func TestServiceRetrieval(t *testing.T) {
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// Create a simple stack and register two service types
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stack, err := New(testNodeConfig())
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if err != nil {
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t.Fatalf("failed to create protocol stack: %v", err)
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}
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if err := stack.Register(NewNoopService); err != nil {
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t.Fatalf("noop service registration failed: %v", err)
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}
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if err := stack.Register(NewInstrumentedService); err != nil {
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t.Fatalf("instrumented service registration failed: %v", err)
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}
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// Make sure none of the services can be retrieved until started
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var noopServ *NoopService
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if err := stack.Service(&noopServ); err != ErrNodeStopped {
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t.Fatalf("noop service retrieval mismatch: have %v, want %v", err, ErrNodeStopped)
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}
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var instServ *InstrumentedService
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if err := stack.Service(&instServ); err != ErrNodeStopped {
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t.Fatalf("instrumented service retrieval mismatch: have %v, want %v", err, ErrNodeStopped)
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}
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// Start the stack and ensure everything is retrievable now
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if err := stack.Start(); err != nil {
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t.Fatalf("failed to start stack: %v", err)
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}
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defer stack.Stop()
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if err := stack.Service(&noopServ); err != nil {
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t.Fatalf("noop service retrieval mismatch: have %v, want %v", err, nil)
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}
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if err := stack.Service(&instServ); err != nil {
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t.Fatalf("instrumented service retrieval mismatch: have %v, want %v", err, nil)
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}
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}
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// Tests that all protocols defined by individual services get launched.
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func TestProtocolGather(t *testing.T) {
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stack, err := New(testNodeConfig())
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if err != nil {
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t.Fatalf("failed to create protocol stack: %v", err)
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}
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// Register a batch of services with some configured number of protocols
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services := map[string]struct {
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Count int
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Maker InstrumentingWrapper
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}{
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"zero": {0, InstrumentedServiceMakerA},
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"one": {1, InstrumentedServiceMakerB},
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"many": {10, InstrumentedServiceMakerC},
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}
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for id, config := range services {
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protocols := make([]p2p.Protocol, config.Count)
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for i := 0; i < len(protocols); i++ {
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protocols[i].Name = id
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protocols[i].Version = uint(i)
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}
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constructor := func(*ServiceContext) (Service, error) {
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return &InstrumentedService{
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protocols: protocols,
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}, nil
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}
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if err := stack.Register(config.Maker(constructor)); err != nil {
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t.Fatalf("service %s: registration failed: %v", id, err)
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}
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}
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// Start the services and ensure all protocols start successfully
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if err := stack.Start(); err != nil {
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t.Fatalf("failed to start protocol stack: %v", err)
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}
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defer stack.Stop()
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protocols := stack.Server().Protocols
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if len(protocols) != 11 {
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t.Fatalf("mismatching number of protocols launched: have %d, want %d", len(protocols), 26)
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}
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for id, config := range services {
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for ver := 0; ver < config.Count; ver++ {
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launched := false
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for i := 0; i < len(protocols); i++ {
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if protocols[i].Name == id && protocols[i].Version == uint(ver) {
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launched = true
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break
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}
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}
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|
if !launched {
|
|
t.Errorf("configured protocol not launched: %s v%d", id, ver)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Tests that all APIs defined by individual services get exposed.
|
|
func TestAPIGather(t *testing.T) {
|
|
stack, err := New(testNodeConfig())
|
|
if err != nil {
|
|
t.Fatalf("failed to create protocol stack: %v", err)
|
|
}
|
|
// Register a batch of services with some configured APIs
|
|
calls := make(chan string, 1)
|
|
makeAPI := func(result string) *OneMethodAPI {
|
|
return &OneMethodAPI{fun: func() { calls <- result }}
|
|
}
|
|
services := map[string]struct {
|
|
APIs []rpc.API
|
|
Maker InstrumentingWrapper
|
|
}{
|
|
"Zero APIs": {
|
|
[]rpc.API{}, InstrumentedServiceMakerA},
|
|
"Single API": {
|
|
[]rpc.API{
|
|
{Namespace: "single", Version: "1", Service: makeAPI("single.v1"), Public: true},
|
|
}, InstrumentedServiceMakerB},
|
|
"Many APIs": {
|
|
[]rpc.API{
|
|
{Namespace: "multi", Version: "1", Service: makeAPI("multi.v1"), Public: true},
|
|
{Namespace: "multi.v2", Version: "2", Service: makeAPI("multi.v2"), Public: true},
|
|
{Namespace: "multi.v2.nested", Version: "2", Service: makeAPI("multi.v2.nested"), Public: true},
|
|
}, InstrumentedServiceMakerC},
|
|
}
|
|
|
|
for id, config := range services {
|
|
config := config
|
|
constructor := func(*ServiceContext) (Service, error) {
|
|
return &InstrumentedService{apis: config.APIs}, nil
|
|
}
|
|
if err := stack.Register(config.Maker(constructor)); err != nil {
|
|
t.Fatalf("service %s: registration failed: %v", id, err)
|
|
}
|
|
}
|
|
// Start the services and ensure all API start successfully
|
|
if err := stack.Start(); err != nil {
|
|
t.Fatalf("failed to start protocol stack: %v", err)
|
|
}
|
|
defer stack.Stop()
|
|
|
|
// Connect to the RPC server and verify the various registered endpoints
|
|
client, err := stack.Attach()
|
|
if err != nil {
|
|
t.Fatalf("failed to connect to the inproc API server: %v", err)
|
|
}
|
|
defer client.Close()
|
|
|
|
tests := []struct {
|
|
Method string
|
|
Result string
|
|
}{
|
|
{"single_theOneMethod", "single.v1"},
|
|
{"multi_theOneMethod", "multi.v1"},
|
|
{"multi.v2_theOneMethod", "multi.v2"},
|
|
{"multi.v2.nested_theOneMethod", "multi.v2.nested"},
|
|
}
|
|
for i, test := range tests {
|
|
if err := client.Call(nil, test.Method); err != nil {
|
|
t.Errorf("test %d: API request failed: %v", i, err)
|
|
}
|
|
select {
|
|
case result := <-calls:
|
|
if result != test.Result {
|
|
t.Errorf("test %d: result mismatch: have %s, want %s", i, result, test.Result)
|
|
}
|
|
case <-time.After(time.Second):
|
|
t.Fatalf("test %d: rpc execution timeout", i)
|
|
}
|
|
}
|
|
}
|