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package config
import (
"bytes"
"fmt"
"io/ioutil"
"path/filepath"
"text/template"
tmos "github.com/tendermint/tendermint/libs/os"
)
// DefaultDirPerm is the default permissions used when creating directories.
const DefaultDirPerm = 0700
var configTemplate *template.Template
func init() {
var err error
if configTemplate, err = template.New("configFileTemplate").Parse(defaultConfigTemplate); err != nil {
panic(err)
}
}
/****** these are for production settings ***********/
// EnsureRoot creates the root, config, and data directories if they don't exist,
// and panics if it fails.
func EnsureRoot(rootDir string) {
if err := tmos.EnsureDir(rootDir, DefaultDirPerm); err != nil {
panic(err.Error())
}
if err := tmos.EnsureDir(filepath.Join(rootDir, defaultConfigDir), DefaultDirPerm); err != nil {
panic(err.Error())
}
if err := tmos.EnsureDir(filepath.Join(rootDir, defaultDataDir), DefaultDirPerm); err != nil {
panic(err.Error())
}
configFilePath := filepath.Join(rootDir, defaultConfigFilePath)
// Write default config file if missing.
if !tmos.FileExists(configFilePath) {
writeDefaultConfigFile(configFilePath)
}
}
// XXX: this func should probably be called by cmd/tendermint/commands/init.go
// alongside the writing of the genesis.json and priv_validator.json
func writeDefaultConfigFile(configFilePath string) {
WriteConfigFile(configFilePath, DefaultConfig())
}
// WriteConfigFile renders config using the template and writes it to configFilePath.
func WriteConfigFile(configFilePath string, config *Config) {
var buffer bytes.Buffer
if err := configTemplate.Execute(&buffer, config); err != nil {
panic(err)
}
tmos.MustWriteFile(configFilePath, buffer.Bytes(), 0644)
}
// Note: any changes to the comments/variables/mapstructure
// must be reflected in the appropriate struct in config/config.go
const defaultConfigTemplate = `# This is a TOML config file.
# For more information, see https://github.com/toml-lang/toml
# NOTE: Any path below can be absolute (e.g. "/var/myawesomeapp/data") or
# relative to the home directory (e.g. "data"). The home directory is
# "$HOME/.tendermint" by default, but could be changed via $TMHOME env variable
# or --home cmd flag.
#######################################################################
### Main Base Config Options ###
#######################################################################
# TCP or UNIX socket address of the ABCI application,
# or the name of an ABCI application compiled in with the Tendermint binary
proxy_app = "{{ .BaseConfig.ProxyApp }}"
# A custom human readable name for this node
moniker = "{{ .BaseConfig.Moniker }}"
# If this node is many blocks behind the tip of the chain, FastSync
# allows them to catchup quickly by downloading blocks in parallel
# and verifying their commits
fast_sync = {{ .BaseConfig.FastSyncMode }}
# Database backend: goleveldb | cleveldb | boltdb | rocksdb | badgerdb
# * goleveldb (github.com/syndtr/goleveldb - most popular implementation)
# - pure go
# - stable
# * cleveldb (uses levigo wrapper)
# - fast
# - requires gcc
# - use cleveldb build tag (go build -tags cleveldb)
# * boltdb (uses etcd's fork of bolt - github.com/etcd-io/bbolt)
# - EXPERIMENTAL
# - may be faster is some use-cases (random reads - indexer)
# - use boltdb build tag (go build -tags boltdb)
# * rocksdb (uses github.com/tecbot/gorocksdb)
# - EXPERIMENTAL
# - requires gcc
# - use rocksdb build tag (go build -tags rocksdb)
# * badgerdb (uses github.com/dgraph-io/badger)
# - EXPERIMENTAL
# - use badgerdb build tag (go build -tags badgerdb)
db_backend = "{{ .BaseConfig.DBBackend }}"
# Database directory
db_dir = "{{ js .BaseConfig.DBPath }}"
# Output level for logging, including package level options
log_level = "{{ .BaseConfig.LogLevel }}"
# Output format: 'plain' (colored text) or 'json'
log_format = "{{ .BaseConfig.LogFormat }}"
##### additional base config options #####
# Path to the JSON file containing the initial validator set and other meta data
genesis_file = "{{ js .BaseConfig.Genesis }}"
# Path to the JSON file containing the private key to use as a validator in the consensus protocol
priv_validator_key_file = "{{ js .BaseConfig.PrivValidatorKey }}"
# Path to the JSON file containing the last sign state of a validator
priv_validator_state_file = "{{ js .BaseConfig.PrivValidatorState }}"
# TCP or UNIX socket address for Tendermint to listen on for
# connections from an external PrivValidator process
priv_validator_laddr = "{{ .BaseConfig.PrivValidatorListenAddr }}"
# Path to the JSON file containing the private key to use for node authentication in the p2p protocol
node_key_file = "{{ js .BaseConfig.NodeKey }}"
# Mechanism to connect to the ABCI application: socket | grpc
abci = "{{ .BaseConfig.ABCI }}"
# If true, query the ABCI app on connecting to a new peer
# so the app can decide if we should keep the connection or not
filter_peers = {{ .BaseConfig.FilterPeers }}
#######################################################################
### Advanced Configuration Options ###
#######################################################################
#######################################################
### RPC Server Configuration Options ###
#######################################################
[rpc]
# TCP or UNIX socket address for the RPC server to listen on
laddr = "{{ .RPC.ListenAddress }}"
# A list of origins a cross-domain request can be executed from
# Default value '[]' disables cors support
# Use '["*"]' to allow any origin
cors_allowed_origins = [{{ range .RPC.CORSAllowedOrigins }}{{ printf "%q, " . }}{{end}}]
# A list of methods the client is allowed to use with cross-domain requests
cors_allowed_methods = [{{ range .RPC.CORSAllowedMethods }}{{ printf "%q, " . }}{{end}}]
# A list of non simple headers the client is allowed to use with cross-domain requests
cors_allowed_headers = [{{ range .RPC.CORSAllowedHeaders }}{{ printf "%q, " . }}{{end}}]
# TCP or UNIX socket address for the gRPC server to listen on
# NOTE: This server only supports /broadcast_tx_commit
grpc_laddr = "{{ .RPC.GRPCListenAddress }}"
# Maximum number of simultaneous connections.
# Does not include RPC (HTTP&WebSocket) connections. See max_open_connections
# If you want to accept a larger number than the default, make sure
# you increase your OS limits.
# 0 - unlimited.
# Should be < {ulimit -Sn} - {MaxNumInboundPeers} - {MaxNumOutboundPeers} - {N of wal, db and other open files}
# 1024 - 40 - 10 - 50 = 924 = ~900
grpc_max_open_connections = {{ .RPC.GRPCMaxOpenConnections }}
# Activate unsafe RPC commands like /dial_seeds and /unsafe_flush_mempool
unsafe = {{ .RPC.Unsafe }}
# Maximum number of simultaneous connections (including WebSocket).
# Does not include gRPC connections. See grpc_max_open_connections
# If you want to accept a larger number than the default, make sure
# you increase your OS limits.
# 0 - unlimited.
# Should be < {ulimit -Sn} - {MaxNumInboundPeers} - {MaxNumOutboundPeers} - {N of wal, db and other open files}
# 1024 - 40 - 10 - 50 = 924 = ~900
max_open_connections = {{ .RPC.MaxOpenConnections }}
# Maximum number of unique clientIDs that can /subscribe
# If you're using /broadcast_tx_commit, set to the estimated maximum number
# of broadcast_tx_commit calls per block.
max_subscription_clients = {{ .RPC.MaxSubscriptionClients }}
# Maximum number of unique queries a given client can /subscribe to
# If you're using GRPC (or Local RPC client) and /broadcast_tx_commit, set to
# the estimated # maximum number of broadcast_tx_commit calls per block.
max_subscriptions_per_client = {{ .RPC.MaxSubscriptionsPerClient }}
# How long to wait for a tx to be committed during /broadcast_tx_commit.
# WARNING: Using a value larger than 10s will result in increasing the
# global HTTP write timeout, which applies to all connections and endpoints.
# See https://github.com/tendermint/tendermint/issues/3435
timeout_broadcast_tx_commit = "{{ .RPC.TimeoutBroadcastTxCommit }}"
# Maximum size of request body, in bytes
max_body_bytes = {{ .RPC.MaxBodyBytes }}
# Maximum size of request header, in bytes
max_header_bytes = {{ .RPC.MaxHeaderBytes }}
# The path to a file containing certificate that is used to create the HTTPS server.
# Migth be either absolute path or path related to tendermint's config directory.
# If the certificate is signed by a certificate authority,
# the certFile should be the concatenation of the server's certificate, any intermediates,
# and the CA's certificate.
# NOTE: both tls_cert_file and tls_key_file must be present for Tendermint to create HTTPS server.
# Otherwise, HTTP server is run.
tls_cert_file = "{{ .RPC.TLSCertFile }}"
# The path to a file containing matching private key that is used to create the HTTPS server.
# Migth be either absolute path or path related to tendermint's config directory.
# NOTE: both tls_cert_file and tls_key_file must be present for Tendermint to create HTTPS server.
# Otherwise, HTTP server is run.
tls_key_file = "{{ .RPC.TLSKeyFile }}"
# pprof listen address (https://golang.org/pkg/net/http/pprof)
pprof_laddr = "{{ .RPC.PprofListenAddress }}"
#######################################################
### P2P Configuration Options ###
#######################################################
[p2p]
# Address to listen for incoming connections
laddr = "{{ .P2P.ListenAddress }}"
# Address to advertise to peers for them to dial
# If empty, will use the same port as the laddr,
# and will introspect on the listener or use UPnP
# to figure out the address.
external_address = "{{ .P2P.ExternalAddress }}"
# Comma separated list of seed nodes to connect to
seeds = "{{ .P2P.Seeds }}"
# Comma separated list of nodes to keep persistent connections to
persistent_peers = "{{ .P2P.PersistentPeers }}"
# UPNP port forwarding
upnp = {{ .P2P.UPNP }}
# Path to address book
addr_book_file = "{{ js .P2P.AddrBook }}"
# Set true for strict address routability rules
# Set false for private or local networks
addr_book_strict = {{ .P2P.AddrBookStrict }}
# Maximum number of inbound peers
max_num_inbound_peers = {{ .P2P.MaxNumInboundPeers }}
# Maximum number of outbound peers to connect to, excluding persistent peers
max_num_outbound_peers = {{ .P2P.MaxNumOutboundPeers }}
# List of node IDs, to which a connection will be (re)established ignoring any existing limits
unconditional_peer_ids = "{{ .P2P.UnconditionalPeerIDs }}"
# Maximum pause when redialing a persistent peer (if zero, exponential backoff is used)
persistent_peers_max_dial_period = "{{ .P2P.PersistentPeersMaxDialPeriod }}"
# Time to wait before flushing messages out on the connection
flush_throttle_timeout = "{{ .P2P.FlushThrottleTimeout }}"
# Maximum size of a message packet payload, in bytes
max_packet_msg_payload_size = {{ .P2P.MaxPacketMsgPayloadSize }}
# Rate at which packets can be sent, in bytes/second
send_rate = {{ .P2P.SendRate }}
# Rate at which packets can be received, in bytes/second
recv_rate = {{ .P2P.RecvRate }}
# Set true to enable the peer-exchange reactor
pex = {{ .P2P.PexReactor }}
# Seed mode, in which node constantly crawls the network and looks for
# peers. If another node asks it for addresses, it responds and disconnects.
#
# Does not work if the peer-exchange reactor is disabled.
seed_mode = {{ .P2P.SeedMode }}
# Comma separated list of peer IDs to keep private (will not be gossiped to other peers)
private_peer_ids = "{{ .P2P.PrivatePeerIDs }}"
# Toggle to disable guard against peers connecting from the same ip.
allow_duplicate_ip = {{ .P2P.AllowDuplicateIP }}
# Peer connection configuration.
handshake_timeout = "{{ .P2P.HandshakeTimeout }}"
dial_timeout = "{{ .P2P.DialTimeout }}"
#######################################################
### Mempool Configurattion Option ###
#######################################################
[mempool]
recheck = {{ .Mempool.Recheck }}
broadcast = {{ .Mempool.Broadcast }}
wal_dir = "{{ js .Mempool.WalPath }}"
# Maximum number of transactions in the mempool
size = {{ .Mempool.Size }}
# Limit the total size of all txs in the mempool.
# This only accounts for raw transactions (e.g. given 1MB transactions and
# max_txs_bytes=5MB, mempool will only accept 5 transactions).
max_txs_bytes = {{ .Mempool.MaxTxsBytes }}
# Size of the cache (used to filter transactions we saw earlier) in transactions
cache_size = {{ .Mempool.CacheSize }}
# Maximum size of a single transaction.
# NOTE: the max size of a tx transmitted over the network is {max_tx_bytes}.
max_tx_bytes = {{ .Mempool.MaxTxBytes }}
# Maximum size of a batch of transactions to send to a peer
# Including space needed by encoding (one varint per transaction).
max_batch_bytes = {{ .Mempool.MaxBatchBytes }}
#######################################################
### State Sync Configuration Options ###
#######################################################
[statesync]
# State sync rapidly bootstraps a new node by discovering, fetching, and restoring a state machine
# snapshot from peers instead of fetching and replaying historical blocks. Requires some peers in
# the network to take and serve state machine snapshots. State sync is not attempted if the node
# has any local state (LastBlockHeight > 0). The node will have a truncated block history,
# starting from the height of the snapshot.
enable = {{ .StateSync.Enable }}
# RPC servers (comma-separated) for light client verification of the synced state machine and
# retrieval of state data for node bootstrapping. Also needs a trusted height and corresponding
# header hash obtained from a trusted source, and a period during which validators can be trusted.
#
# For Cosmos SDK-based chains, trust_period should usually be about 2/3 of the unbonding time (~2
# weeks) during which they can be financially punished (slashed) for misbehavior.
rpc_servers = ""
trust_height = {{ .StateSync.TrustHeight }}
trust_hash = "{{ .StateSync.TrustHash }}"
trust_period = "{{ .StateSync.TrustPeriod }}"
# Time to spend discovering snapshots before initiating a restore.
discovery_time = "{{ .StateSync.DiscoveryTime }}"
# Temporary directory for state sync snapshot chunks, defaults to the OS tempdir (typically /tmp).
# Will create a new, randomly named directory within, and remove it when done.
temp_dir = "{{ .StateSync.TempDir }}"
#######################################################
### Fast Sync Configuration Connections ###
#######################################################
[fastsync]
# Fast Sync version to use:
# 1) "v0" (default) - the legacy fast sync implementation
# 2) "v1" - refactor of v0 version for better testability
# 2) "v2" - complete redesign of v0, optimized for testability & readability
version = "{{ .FastSync.Version }}"
#######################################################
### Consensus Configuration Options ###
#######################################################
[consensus]
wal_file = "{{ js .Consensus.WalPath }}"
# How long we wait for a proposal block before prevoting nil
timeout_propose = "{{ .Consensus.TimeoutPropose }}"
# How much timeout_propose increases with each round
timeout_propose_delta = "{{ .Consensus.TimeoutProposeDelta }}"
# How long we wait after receiving +2/3 prevotes for “anything” (ie. not a single block or nil)
timeout_prevote = "{{ .Consensus.TimeoutPrevote }}"
# How much the timeout_prevote increases with each round
timeout_prevote_delta = "{{ .Consensus.TimeoutPrevoteDelta }}"
# How long we wait after receiving +2/3 precommits for “anything” (ie. not a single block or nil)
timeout_precommit = "{{ .Consensus.TimeoutPrecommit }}"
# How much the timeout_precommit increases with each round
timeout_precommit_delta = "{{ .Consensus.TimeoutPrecommitDelta }}"
# How long we wait after committing a block, before starting on the new
# height (this gives us a chance to receive some more precommits, even
# though we already have +2/3).
timeout_commit = "{{ .Consensus.TimeoutCommit }}"
# How many blocks to look back to check existence of the node's consensus votes before joining consensus
# When non-zero, the node will panic upon restart
# if the same consensus key was used to sign {double_sign_check_height} last blocks.
# So, validators should stop the state machine, wait for some blocks, and then restart the state machine to avoid panic.
double_sign_check_height = {{ .Consensus.DoubleSignCheckHeight }}
# Make progress as soon as we have all the precommits (as if TimeoutCommit = 0)
skip_timeout_commit = {{ .Consensus.SkipTimeoutCommit }}
# EmptyBlocks mode and possible interval between empty blocks
create_empty_blocks = {{ .Consensus.CreateEmptyBlocks }}
create_empty_blocks_interval = "{{ .Consensus.CreateEmptyBlocksInterval }}"
# Reactor sleep duration parameters
peer_gossip_sleep_duration = "{{ .Consensus.PeerGossipSleepDuration }}"
peer_query_maj23_sleep_duration = "{{ .Consensus.PeerQueryMaj23SleepDuration }}"
#######################################################
### Transaction Indexer Configuration Options ###
#######################################################
[tx_index]
# What indexer to use for transactions
#
# The application will set which txs to index. In some cases a node operator will be able
# to decide which txs to index based on configuration set in the application.
#
# Options:
# 1) "null"
# 2) "kv" (default) - the simplest possible indexer, backed by key-value storage (defaults to levelDB; see DBBackend).
# - When "kv" is chosen "tx.height" and "tx.hash" will always be indexed.
indexer = "{{ .TxIndex.Indexer }}"
#######################################################
### Instrumentation Configuration Options ###
#######################################################
[instrumentation]
# When true, Prometheus metrics are served under /metrics on
# PrometheusListenAddr.
# Check out the documentation for the list of available metrics.
prometheus = {{ .Instrumentation.Prometheus }}
# Address to listen for Prometheus collector(s) connections
prometheus_listen_addr = "{{ .Instrumentation.PrometheusListenAddr }}"
# Maximum number of simultaneous connections.
# If you want to accept a larger number than the default, make sure
# you increase your OS limits.
# 0 - unlimited.
max_open_connections = {{ .Instrumentation.MaxOpenConnections }}
# Instrumentation namespace
namespace = "{{ .Instrumentation.Namespace }}"
`
/****** these are for test settings ***********/
func ResetTestRoot(testName string) *Config {
return ResetTestRootWithChainID(testName, "")
}
func ResetTestRootWithChainID(testName string, chainID string) *Config {
// create a unique, concurrency-safe test directory under os.TempDir()
rootDir, err := ioutil.TempDir("", fmt.Sprintf("%s-%s_", chainID, testName))
if err != nil {
panic(err)
}
// ensure config and data subdirs are created
if err := tmos.EnsureDir(filepath.Join(rootDir, defaultConfigDir), DefaultDirPerm); err != nil {
panic(err)
}
if err := tmos.EnsureDir(filepath.Join(rootDir, defaultDataDir), DefaultDirPerm); err != nil {
panic(err)
}
baseConfig := DefaultBaseConfig()
configFilePath := filepath.Join(rootDir, defaultConfigFilePath)
genesisFilePath := filepath.Join(rootDir, baseConfig.Genesis)
privKeyFilePath := filepath.Join(rootDir, baseConfig.PrivValidatorKey)
privStateFilePath := filepath.Join(rootDir, baseConfig.PrivValidatorState)
// Write default config file if missing.
if !tmos.FileExists(configFilePath) {
writeDefaultConfigFile(configFilePath)
}
if !tmos.FileExists(genesisFilePath) {
if chainID == "" {
chainID = "tendermint_test"
}
testGenesis := fmt.Sprintf(testGenesisFmt, chainID)
tmos.MustWriteFile(genesisFilePath, []byte(testGenesis), 0644)
}
// we always overwrite the priv val
tmos.MustWriteFile(privKeyFilePath, []byte(testPrivValidatorKey), 0644)
tmos.MustWriteFile(privStateFilePath, []byte(testPrivValidatorState), 0644)
config := TestConfig().SetRoot(rootDir)
return config
}
var testGenesisFmt = `{
"genesis_time": "2018-10-10T08:20:13.695936996Z",
"chain_id": "%s",
"initial_height": "1",
"consensus_params": {
"block": {
"max_bytes": "22020096",
"max_gas": "-1",
"time_iota_ms": "10"
},
"evidence": {
"max_age_num_blocks": "100000",
"max_age_duration": "172800000000000",
"max_num": 50
},
"validator": {
"pub_key_types": [
"ed25519"
]
},
"version": {}
},
"validators": [
{
"pub_key": {
"type": "tendermint/PubKeyEd25519",
"value":"AT/+aaL1eB0477Mud9JMm8Sh8BIvOYlPGC9KkIUmFaE="
},
"power": "10",
"name": ""
}
],
"app_hash": ""
}`
var testPrivValidatorKey = `{
"address": "A3258DCBF45DCA0DF052981870F2D1441A36D145",
"pub_key": {
"type": "tendermint/PubKeyEd25519",
"value": "AT/+aaL1eB0477Mud9JMm8Sh8BIvOYlPGC9KkIUmFaE="
},
"priv_key": {
"type": "tendermint/PrivKeyEd25519",
"value": "EVkqJO/jIXp3rkASXfh9YnyToYXRXhBr6g9cQVxPFnQBP/5povV4HTjvsy530kybxKHwEi85iU8YL0qQhSYVoQ=="
}
}`
var testPrivValidatorState = `{
"height": "0",
"round": 0,
"step": 0
}`