mirror of https://github.com/status-im/op-geth.git
657 lines
16 KiB
Go
657 lines
16 KiB
Go
// Copyright 2018 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 swarm
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import (
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"context"
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"flag"
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"fmt"
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"io/ioutil"
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"math/rand"
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"os"
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"sync"
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"sync/atomic"
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"testing"
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"time"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/crypto"
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"github.com/ethereum/go-ethereum/log"
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"github.com/ethereum/go-ethereum/node"
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"github.com/ethereum/go-ethereum/p2p/discover"
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"github.com/ethereum/go-ethereum/p2p/simulations"
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"github.com/ethereum/go-ethereum/p2p/simulations/adapters"
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"github.com/ethereum/go-ethereum/swarm/api"
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"github.com/ethereum/go-ethereum/swarm/network"
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"github.com/ethereum/go-ethereum/swarm/storage"
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colorable "github.com/mattn/go-colorable"
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)
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var (
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loglevel = flag.Int("loglevel", 2, "verbosity of logs")
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longrunning = flag.Bool("longrunning", false, "do run long-running tests")
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waitKademlia = flag.Bool("waitkademlia", false, "wait for healthy kademlia before checking files availability")
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)
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func init() {
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rand.Seed(time.Now().UnixNano())
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flag.Parse()
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log.Root().SetHandler(log.LvlFilterHandler(log.Lvl(*loglevel), log.StreamHandler(colorable.NewColorableStderr(), log.TerminalFormat(true))))
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}
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// TestSwarmNetwork runs a series of test simulations with
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// static and dynamic Swarm nodes in network simulation, by
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// uploading files to every node and retrieving them.
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func TestSwarmNetwork(t *testing.T) {
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for _, tc := range []struct {
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name string
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steps []testSwarmNetworkStep
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options *testSwarmNetworkOptions
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disabled bool
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}{
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{
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name: "10_nodes",
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steps: []testSwarmNetworkStep{
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{
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nodeCount: 10,
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},
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},
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options: &testSwarmNetworkOptions{
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Timeout: 45 * time.Second,
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},
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},
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{
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name: "10_nodes_skip_check",
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steps: []testSwarmNetworkStep{
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{
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nodeCount: 10,
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},
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},
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options: &testSwarmNetworkOptions{
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Timeout: 45 * time.Second,
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SkipCheck: true,
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},
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},
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{
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name: "100_nodes",
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steps: []testSwarmNetworkStep{
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{
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nodeCount: 100,
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},
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},
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options: &testSwarmNetworkOptions{
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Timeout: 3 * time.Minute,
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},
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disabled: !*longrunning,
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},
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{
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name: "100_nodes_skip_check",
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steps: []testSwarmNetworkStep{
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{
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nodeCount: 100,
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},
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},
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options: &testSwarmNetworkOptions{
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Timeout: 3 * time.Minute,
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SkipCheck: true,
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},
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disabled: !*longrunning,
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},
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{
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name: "inc_node_count",
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steps: []testSwarmNetworkStep{
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{
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nodeCount: 2,
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},
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{
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nodeCount: 5,
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},
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{
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nodeCount: 10,
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},
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},
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options: &testSwarmNetworkOptions{
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Timeout: 90 * time.Second,
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},
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disabled: !*longrunning,
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},
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{
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name: "dec_node_count",
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steps: []testSwarmNetworkStep{
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{
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nodeCount: 10,
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},
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{
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nodeCount: 6,
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},
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{
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nodeCount: 3,
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},
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},
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options: &testSwarmNetworkOptions{
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Timeout: 90 * time.Second,
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},
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disabled: !*longrunning,
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},
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{
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name: "dec_inc_node_count",
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steps: []testSwarmNetworkStep{
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{
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nodeCount: 5,
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},
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{
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nodeCount: 3,
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},
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{
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nodeCount: 10,
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},
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},
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options: &testSwarmNetworkOptions{
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Timeout: 90 * time.Second,
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},
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},
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{
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name: "inc_dec_node_count",
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steps: []testSwarmNetworkStep{
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{
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nodeCount: 3,
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},
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{
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nodeCount: 5,
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},
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{
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nodeCount: 25,
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},
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{
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nodeCount: 10,
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},
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{
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nodeCount: 4,
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},
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},
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options: &testSwarmNetworkOptions{
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Timeout: 5 * time.Minute,
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},
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disabled: !*longrunning,
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},
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{
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name: "inc_dec_node_count_skip_check",
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steps: []testSwarmNetworkStep{
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{
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nodeCount: 3,
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},
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{
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nodeCount: 5,
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},
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{
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nodeCount: 25,
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},
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{
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nodeCount: 10,
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},
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{
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nodeCount: 4,
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},
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},
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options: &testSwarmNetworkOptions{
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Timeout: 5 * time.Minute,
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SkipCheck: true,
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},
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disabled: !*longrunning,
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},
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} {
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if tc.disabled {
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continue
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}
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t.Run(tc.name, func(t *testing.T) {
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testSwarmNetwork(t, tc.options, tc.steps...)
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})
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}
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}
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// testSwarmNetworkStep is the configuration
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// for the state of the simulation network.
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type testSwarmNetworkStep struct {
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// number of swarm nodes that must be in the Up state
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nodeCount int
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}
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// file represents the file uploaded on a particular node.
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type file struct {
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addr storage.Address
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data string
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nodeID discover.NodeID
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}
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// check represents a reference to a file that is retrieved
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// from a particular node.
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type check struct {
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key string
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nodeID discover.NodeID
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}
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// testSwarmNetworkOptions contains optional parameters for running
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// testSwarmNetwork.
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type testSwarmNetworkOptions struct {
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Timeout time.Duration
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SkipCheck bool
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}
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// testSwarmNetwork is a helper function used for testing different
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// static and dynamic Swarm network simulations.
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// It is responsible for:
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// - Setting up a Swarm network simulation, and updates the number of nodes within the network on every step according to steps.
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// - Uploading a unique file to every node on every step.
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// - May wait for Kademlia on every node to be healthy.
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// - Checking if a file is retrievable from all nodes.
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func testSwarmNetwork(t *testing.T, o *testSwarmNetworkOptions, steps ...testSwarmNetworkStep) {
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dir, err := ioutil.TempDir("", "swarm-network-test")
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if err != nil {
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t.Fatal(err)
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}
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defer os.RemoveAll(dir)
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if o == nil {
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o = new(testSwarmNetworkOptions)
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}
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ctx := context.Background()
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if o.Timeout > 0 {
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var cancel context.CancelFunc
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ctx, cancel = context.WithTimeout(ctx, o.Timeout)
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defer cancel()
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}
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swarms := make(map[discover.NodeID]*Swarm)
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files := make([]file, 0)
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services := map[string]adapters.ServiceFunc{
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"swarm": func(ctx *adapters.ServiceContext) (node.Service, error) {
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config := api.NewConfig()
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dir, err := ioutil.TempDir(dir, "node")
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if err != nil {
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return nil, err
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}
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config.Path = dir
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privkey, err := crypto.GenerateKey()
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if err != nil {
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return nil, err
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}
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config.Init(privkey)
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config.DeliverySkipCheck = o.SkipCheck
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s, err := NewSwarm(config, nil)
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if err != nil {
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return nil, err
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}
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log.Info("new swarm", "bzzKey", config.BzzKey, "baseAddr", fmt.Sprintf("%x", s.bzz.BaseAddr()))
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swarms[ctx.Config.ID] = s
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return s, nil
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},
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}
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a := adapters.NewSimAdapter(services)
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net := simulations.NewNetwork(a, &simulations.NetworkConfig{
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ID: "0",
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DefaultService: "swarm",
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})
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defer net.Shutdown()
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trigger := make(chan discover.NodeID)
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sim := simulations.NewSimulation(net)
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for i, step := range steps {
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log.Debug("test sync step", "n", i+1, "nodes", step.nodeCount)
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change := step.nodeCount - len(allNodeIDs(net))
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if change > 0 {
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_, err := addNodes(change, net)
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if err != nil {
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t.Fatal(err)
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}
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} else if change < 0 {
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err := removeNodes(-change, net)
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if err != nil {
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t.Fatal(err)
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}
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} else {
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t.Logf("step %v: no change in nodes", i)
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continue
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}
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nodeIDs := allNodeIDs(net)
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shuffle(len(nodeIDs), func(i, j int) {
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nodeIDs[i], nodeIDs[j] = nodeIDs[j], nodeIDs[i]
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})
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for _, id := range nodeIDs {
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key, data, err := uploadFile(swarms[id])
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if err != nil {
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t.Fatal(err)
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}
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log.Trace("file uploaded", "node", id, "key", key.String())
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files = append(files, file{
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addr: key,
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data: data,
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nodeID: id,
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})
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}
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// Prepare PeerPot map for checking Kademlia health
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var ppmap map[string]*network.PeerPot
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nIDs := allNodeIDs(net)
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addrs := make([][]byte, len(nIDs))
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if *waitKademlia {
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for i, id := range nIDs {
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addrs[i] = swarms[id].bzz.BaseAddr()
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}
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ppmap = network.NewPeerPotMap(2, addrs)
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}
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var checkStatusM sync.Map
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var nodeStatusM sync.Map
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var totalFoundCount uint64
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result := sim.Run(ctx, &simulations.Step{
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Action: func(ctx context.Context) error {
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if *waitKademlia {
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// Wait for healthy Kademlia on every node before checking files
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ticker := time.NewTicker(200 * time.Millisecond)
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defer ticker.Stop()
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for range ticker.C {
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healthy := true
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log.Debug("kademlia health check", "node count", len(nIDs), "addr count", len(addrs))
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for i, id := range nIDs {
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swarm := swarms[id]
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//PeerPot for this node
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addr := common.Bytes2Hex(swarm.bzz.BaseAddr())
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pp := ppmap[addr]
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//call Healthy RPC
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h := swarm.bzz.Healthy(pp)
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//print info
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log.Debug(swarm.bzz.String())
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log.Debug("kademlia", "empty bins", pp.EmptyBins, "gotNN", h.GotNN, "knowNN", h.KnowNN, "full", h.Full)
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log.Debug("kademlia", "health", h.GotNN && h.KnowNN && h.Full, "addr", fmt.Sprintf("%x", swarm.bzz.BaseAddr()), "id", id, "i", i)
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log.Debug("kademlia", "ill condition", !h.GotNN || !h.Full, "addr", fmt.Sprintf("%x", swarm.bzz.BaseAddr()), "id", id, "i", i)
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if !h.GotNN || !h.Full {
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healthy = false
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break
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}
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}
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if healthy {
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break
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}
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}
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}
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go func() {
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// File retrieval check is repeated until all uploaded files are retrieved from all nodes
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// or until the timeout is reached.
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for {
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if retrieve(net, files, swarms, trigger, &checkStatusM, &nodeStatusM, &totalFoundCount) == 0 {
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return
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}
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}
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}()
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return nil
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},
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Trigger: trigger,
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Expect: &simulations.Expectation{
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Nodes: allNodeIDs(net),
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Check: func(ctx context.Context, id discover.NodeID) (bool, error) {
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// The check is done by a goroutine in the action function.
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return true, nil
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},
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},
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})
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if result.Error != nil {
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t.Fatal(result.Error)
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}
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log.Debug("done: test sync step", "n", i+1, "nodes", step.nodeCount)
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}
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}
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// allNodeIDs is returning NodeID for every node that is Up.
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func allNodeIDs(net *simulations.Network) (nodes []discover.NodeID) {
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for _, n := range net.GetNodes() {
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if n.Up {
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nodes = append(nodes, n.ID())
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}
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}
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return
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}
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// addNodes adds a number of nodes to the network.
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func addNodes(count int, net *simulations.Network) (ids []discover.NodeID, err error) {
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for i := 0; i < count; i++ {
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nodeIDs := allNodeIDs(net)
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l := len(nodeIDs)
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nodeconf := adapters.RandomNodeConfig()
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node, err := net.NewNodeWithConfig(nodeconf)
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if err != nil {
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return nil, fmt.Errorf("create node: %v", err)
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}
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err = net.Start(node.ID())
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if err != nil {
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return nil, fmt.Errorf("start node: %v", err)
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}
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log.Debug("created node", "id", node.ID())
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// connect nodes in a chain
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if l > 0 {
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var otherNodeID discover.NodeID
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for i := l - 1; i >= 0; i-- {
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n := net.GetNode(nodeIDs[i])
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if n.Up {
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otherNodeID = n.ID()
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break
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}
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}
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log.Debug("connect nodes", "one", node.ID(), "other", otherNodeID)
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if err := net.Connect(node.ID(), otherNodeID); err != nil {
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return nil, err
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}
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}
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ids = append(ids, node.ID())
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}
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return ids, nil
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}
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// removeNodes stops a random nodes in the network.
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func removeNodes(count int, net *simulations.Network) error {
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for i := 0; i < count; i++ {
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// allNodeIDs are returning only the Up nodes.
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nodeIDs := allNodeIDs(net)
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if len(nodeIDs) == 0 {
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break
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}
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node := net.GetNode(nodeIDs[rand.Intn(len(nodeIDs))])
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if err := node.Stop(); err != nil {
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return err
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}
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log.Debug("removed node", "id", node.ID())
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}
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return nil
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}
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// uploadFile, uploads a short file to the swarm instance
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// using the api.Put method.
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func uploadFile(swarm *Swarm) (storage.Address, string, error) {
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b := make([]byte, 8)
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_, err := rand.Read(b)
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if err != nil {
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return nil, "", err
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}
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// File data is very short, but it is ensured that its
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// uniqueness is very certain.
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data := fmt.Sprintf("test content %s %x", time.Now().Round(0), b)
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k, wait, err := swarm.api.Put(data, "text/plain", false)
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if err != nil {
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return nil, "", err
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}
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if wait != nil {
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wait()
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}
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return k, data, nil
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}
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// retrieve is the function that is used for checking the availability of
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// uploaded files in testSwarmNetwork test helper function.
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func retrieve(
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net *simulations.Network,
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files []file,
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swarms map[discover.NodeID]*Swarm,
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trigger chan discover.NodeID,
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checkStatusM *sync.Map,
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nodeStatusM *sync.Map,
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totalFoundCount *uint64,
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) (missing uint64) {
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shuffle(len(files), func(i, j int) {
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files[i], files[j] = files[j], files[i]
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})
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var totalWg sync.WaitGroup
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errc := make(chan error)
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nodeIDs := allNodeIDs(net)
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totalCheckCount := len(nodeIDs) * len(files)
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for _, id := range nodeIDs {
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if _, ok := nodeStatusM.Load(id); ok {
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continue
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}
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start := time.Now()
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var checkCount uint64
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var foundCount uint64
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totalWg.Add(1)
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var wg sync.WaitGroup
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for _, f := range files {
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swarm := swarms[id]
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checkKey := check{
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key: f.addr.String(),
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nodeID: id,
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}
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if n, ok := checkStatusM.Load(checkKey); ok && n.(int) == 0 {
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continue
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}
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checkCount++
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wg.Add(1)
|
|
go func(f file, id discover.NodeID) {
|
|
defer wg.Done()
|
|
|
|
log.Debug("api get: check file", "node", id.String(), "key", f.addr.String(), "total files found", atomic.LoadUint64(totalFoundCount))
|
|
|
|
r, _, _, _, err := swarm.api.Get(f.addr, "/")
|
|
if err != nil {
|
|
errc <- fmt.Errorf("api get: node %s, key %s, kademlia %s: %v", id, f.addr, swarm.bzz.Hive, err)
|
|
return
|
|
}
|
|
d, err := ioutil.ReadAll(r)
|
|
if err != nil {
|
|
errc <- fmt.Errorf("api get: read response: node %s, key %s: kademlia %s: %v", id, f.addr, swarm.bzz.Hive, err)
|
|
return
|
|
}
|
|
data := string(d)
|
|
if data != f.data {
|
|
errc <- fmt.Errorf("file contend missmatch: node %s, key %s, expected %q, got %q", id, f.addr, f.data, data)
|
|
return
|
|
}
|
|
checkStatusM.Store(checkKey, 0)
|
|
atomic.AddUint64(&foundCount, 1)
|
|
log.Info("api get: file found", "node", id.String(), "key", f.addr.String(), "content", data, "files found", atomic.LoadUint64(&foundCount))
|
|
}(f, id)
|
|
}
|
|
|
|
go func(id discover.NodeID) {
|
|
defer totalWg.Done()
|
|
wg.Wait()
|
|
|
|
atomic.AddUint64(totalFoundCount, foundCount)
|
|
|
|
if foundCount == checkCount {
|
|
log.Info("all files are found for node", "id", id.String(), "duration", time.Since(start))
|
|
nodeStatusM.Store(id, 0)
|
|
trigger <- id
|
|
return
|
|
}
|
|
log.Debug("files missing for node", "id", id.String(), "check", checkCount, "found", foundCount)
|
|
}(id)
|
|
|
|
}
|
|
|
|
go func() {
|
|
totalWg.Wait()
|
|
close(errc)
|
|
}()
|
|
|
|
var errCount int
|
|
for err := range errc {
|
|
if err != nil {
|
|
errCount++
|
|
}
|
|
log.Warn(err.Error())
|
|
}
|
|
|
|
log.Info("check stats", "total check count", totalCheckCount, "total files found", atomic.LoadUint64(totalFoundCount), "total errors", errCount)
|
|
|
|
return uint64(totalCheckCount) - atomic.LoadUint64(totalFoundCount)
|
|
}
|
|
|
|
// Backported from stdlib https://golang.org/src/math/rand/rand.go?s=11175:11215#L333
|
|
//
|
|
// Replace with rand.Shuffle from go 1.10 when go 1.9 support is dropped.
|
|
//
|
|
// shuffle pseudo-randomizes the order of elements.
|
|
// n is the number of elements. Shuffle panics if n < 0.
|
|
// swap swaps the elements with indexes i and j.
|
|
func shuffle(n int, swap func(i, j int)) {
|
|
if n < 0 {
|
|
panic("invalid argument to Shuffle")
|
|
}
|
|
|
|
// Fisher-Yates shuffle: https://en.wikipedia.org/wiki/Fisher%E2%80%93Yates_shuffle
|
|
// Shuffle really ought not be called with n that doesn't fit in 32 bits.
|
|
// Not only will it take a very long time, but with 2³¹! possible permutations,
|
|
// there's no way that any PRNG can have a big enough internal state to
|
|
// generate even a minuscule percentage of the possible permutations.
|
|
// Nevertheless, the right API signature accepts an int n, so handle it as best we can.
|
|
i := n - 1
|
|
for ; i > 1<<31-1-1; i-- {
|
|
j := int(rand.Int63n(int64(i + 1)))
|
|
swap(i, j)
|
|
}
|
|
for ; i > 0; i-- {
|
|
j := int(rand.Int31n(int32(i + 1)))
|
|
swap(i, j)
|
|
}
|
|
}
|