zolfa
/
tendermint


								package e2e


								import (

									"fmt"

									"os"

									"sort"


									"github.com/BurntSushi/toml"

								)


								// Manifest represents a TOML testnet manifest.

								type Manifest struct {

									// IPv6 uses IPv6 networking instead of IPv4. Defaults to IPv4.

									IPv6 bool `toml:"ipv6"`


									// InitialHeight specifies the initial block height, set in genesis. Defaults to 1.

									InitialHeight int64 `toml:"initial_height"`


									// InitialState is an initial set of key/value pairs for the application,

									// set in genesis. Defaults to nothing.

									InitialState map[string]string `toml:"initial_state"`


									// Validators is the initial validator set in genesis, given as node names

									// and power:

									//

									// validators = { validator01 = 10; validator02 = 20; validator03 = 30 }

									//

									// Defaults to all nodes that have mode=validator at power 100. Explicitly

									// specifying an empty set will start with no validators in genesis, and

									// the application must return the validator set in InitChain via the

									// setting validator_update.0 (see below).

									Validators *map[string]int64 `toml:"validators"`


									// ValidatorUpdates is a map of heights to validator names and their power,

									// and will be returned by the ABCI application. For example, the following

									// changes the power of validator01 and validator02 at height 1000:

									//

									// [validator_update.1000]

									// validator01 = 20

									// validator02 = 10

									//

									// Specifying height 0 returns the validator update during InitChain. The

									// application returns the validator updates as-is, i.e. removing a

									// validator must be done by returning it with power 0, and any validators

									// not specified are not changed.

									ValidatorUpdates map[string]map[string]int64 `toml:"validator_update"`


									// Nodes specifies the network nodes. At least one node must be given.

									Nodes map[string]*ManifestNode `toml:"node"`


									// KeyType sets the curve that will be used by validators.

									// Options are ed25519 & secp256k1

									KeyType string `toml:"key_type"`


									// Evidence indicates the amount of evidence that will be injected into the

									// testnet via the RPC endpoint of a random node. Default is 0

									Evidence int `toml:"evidence"`


									// LogLevel sets the log level of the entire testnet. This can be overridden

									// by individual nodes.

									LogLevel string `toml:"log_level"`


									// QueueType describes the type of queue that the system uses internally

									QueueType string `toml:"queue_type"`


									// Number of bytes per tx. Default is 1kb (1024)

									TxSize int64

								}


								// ManifestNode represents a node in a testnet manifest.

								type ManifestNode struct {

									// Mode specifies the type of node: "validator", "full", "light" or "seed".

									// Defaults to "validator". Full nodes do not get a signing key (a dummy key

									// is generated), and seed nodes run in seed mode with the PEX reactor enabled.

									Mode string `toml:"mode"`


									// Seeds is the list of node names to use as P2P seed nodes. Defaults to none.

									Seeds []string `toml:"seeds"`


									// PersistentPeers is a list of node names to maintain persistent P2P

									// connections to. If neither seeds nor persistent peers are specified,

									// this defaults to all other nodes in the network. For light clients,

									// this relates to the providers the light client is connected to.

									PersistentPeers []string `toml:"persistent_peers"`


									// Database specifies the database backend: "goleveldb", "cleveldb",

									// "rocksdb", "boltdb", or "badgerdb". Defaults to goleveldb.

									Database string `toml:"database"`


									// ABCIProtocol specifies the protocol used to communicate with the ABCI

									// application: "unix", "tcp", "grpc", or "builtin". Defaults to unix.

									// builtin will build a complete Tendermint node into the application and

									// launch it instead of launching a separate Tendermint process.

									ABCIProtocol string `toml:"abci_protocol"`


									// PrivvalProtocol specifies the protocol used to sign consensus messages:

									// "file", "unix", "tcp", or "grpc". Defaults to "file". For tcp and unix, the ABCI

									// application will launch a remote signer client in a separate goroutine.

									// For grpc the ABCI application will launch a remote signer server.

									// Only nodes with mode=validator will actually make use of this.

									PrivvalProtocol string `toml:"privval_protocol"`


									// StartAt specifies the block height at which the node will be started. The

									// runner will wait for the network to reach at least this block height.

									StartAt int64 `toml:"start_at"`


									// BlockSync specifies the block sync mode: "" (disable), "v0" or "v2".

									// Defaults to disabled.

									BlockSync string `toml:"block_sync"`


									// Mempool specifies which version of mempool to use. Either "v0" or "v1"

									Mempool string `toml:"mempool_version"`


									// StateSync enables state sync. The runner automatically configures trusted

									// block hashes and RPC servers. At least one node in the network must have

									// SnapshotInterval set to non-zero, and the state syncing node must have

									// StartAt set to an appropriate height where a snapshot is available.

									// StateSync can either be "p2p" or "rpc" or an empty string to disable

									StateSync string `toml:"state_sync"`


									// PersistInterval specifies the height interval at which the application

									// will persist state to disk. Defaults to 1 (every height), setting this to

									// 0 disables state persistence.

									PersistInterval *uint64 `toml:"persist_interval"`


									// SnapshotInterval specifies the height interval at which the application

									// will take state sync snapshots. Defaults to 0 (disabled).

									SnapshotInterval uint64 `toml:"snapshot_interval"`


									// RetainBlocks specifies the number of recent blocks to retain. Defaults to

									// 0, which retains all blocks. Must be greater that PersistInterval,

									// SnapshotInterval and EvidenceAgeHeight.

									RetainBlocks uint64 `toml:"retain_blocks"`


									// Perturb lists perturbations to apply to the node after it has been

									// started and synced with the network:

									//

									// disconnect: temporarily disconnects the node from the network

									// kill:       kills the node with SIGKILL then restarts it

									// pause:      temporarily pauses (freezes) the node

									// restart:    restarts the node, shutting it down with SIGTERM

									Perturb []string `toml:"perturb"`


									// Log level sets the log level of the specific node i.e. "info".

									// This is helpful when debugging a specific problem. This overrides the network

									// level.

									LogLevel string `toml:"log_level"`

								}


								// Stateless reports whether m is a node that does not own state, including light and seed nodes.

								func (m ManifestNode) Stateless() bool {

									return m.Mode == string(ModeLight) || m.Mode == string(ModeSeed)

								}


								// Save saves the testnet manifest to a file.

								func (m Manifest) Save(file string) error {

									f, err := os.Create(file)

									if err != nil {

										return fmt.Errorf("failed to create manifest file %q: %w", file, err)

									}

									return toml.NewEncoder(f).Encode(m)

								}


								// LoadManifest loads a testnet manifest from a file.

								func LoadManifest(file string) (Manifest, error) {

									manifest := Manifest{}

									_, err := toml.DecodeFile(file, &manifest)

									if err != nil {

										return manifest, fmt.Errorf("failed to load testnet manifest %q: %w", file, err)

									}

									return manifest, nil

								}


								// SortManifests orders (in-place) a list of manifests such that the

								// manifests will be ordered in terms of complexity (or expected

								// runtime). Complexity is determined first by the number of nodes,

								// and then by the total number of perturbations in the network.

								//

								// If reverse is true, then the manifests are ordered with the most

								// complex networks before the less complex networks.

								func SortManifests(manifests []Manifest, reverse bool) {

									sort.SliceStable(manifests, func(i, j int) bool {

										// sort based on a point-based comparison between two

										// manifests.

										var (

											left  = manifests[i]

											right = manifests[j]

										)


										// scores start with 100 points for each node. The

										// number of nodes in a network is the most important

										// factor in the complexity of the test.

										leftScore := len(left.Nodes) * 100

										rightScore := len(right.Nodes) * 100


										// add two points for every node perturbation, and one

										// point for every node that starts after genesis.

										for _, n := range left.Nodes {

											leftScore += (len(n.Perturb) * 2)


											if n.StartAt > 0 {

												leftScore += 3

											}

										}

										for _, n := range right.Nodes {

											rightScore += (len(n.Perturb) * 2)

											if n.StartAt > 0 {

												rightScore += 3

											}

										}


										// add one point if the network has evidence.

										if left.Evidence > 0 {

											leftScore += 2

										}


										if right.Evidence > 0 {

											rightScore += 2

										}


										if left.TxSize > right.TxSize {

											leftScore++

										}


										if right.TxSize > left.TxSize {

											rightScore++

										}


										if reverse {

											return leftScore >= rightScore

										}


										return leftScore < rightScore

									})

								}


								// SplitGroups divides a list of manifests into n groups of

								// manifests.

								func SplitGroups(groups int, manifests []Manifest) [][]Manifest {

									groupSize := (len(manifests) + groups - 1) / groups

									splitManifests := make([][]Manifest, 0, groups)


									for i := 0; i < len(manifests); i += groupSize {

										grp := make([]Manifest, groupSize)

										n := copy(grp, manifests[i:])

										splitManifests = append(splitManifests, grp[:n])

									}


									return splitManifests

								}


								// WriteManifests writes a collection of manifests into files with the

								// specified path prefix.

								func WriteManifests(prefix string, manifests []Manifest) error {

									for i, manifest := range manifests {

										if err := manifest.Save(fmt.Sprintf("%s-%04d.toml", prefix, i)); err != nil {

											return err

										}

									}


									return nil

								}