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package config
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import (
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"bytes"
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"os"
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"path/filepath"
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"text/template"
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cmn "github.com/tendermint/tendermint/libs/common"
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)
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var configTemplate *template.Template
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func init() {
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var err error
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if configTemplate, err = template.New("configFileTemplate").Parse(defaultConfigTemplate); err != nil {
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panic(err)
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}
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}
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/****** these are for production settings ***********/
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// EnsureRoot creates the root, config, and data directories if they don't exist,
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// and panics if it fails.
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func EnsureRoot(rootDir string) {
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if err := cmn.EnsureDir(rootDir, 0700); err != nil {
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cmn.PanicSanity(err.Error())
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}
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if err := cmn.EnsureDir(filepath.Join(rootDir, defaultConfigDir), 0700); err != nil {
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cmn.PanicSanity(err.Error())
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}
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if err := cmn.EnsureDir(filepath.Join(rootDir, defaultDataDir), 0700); err != nil {
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cmn.PanicSanity(err.Error())
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}
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configFilePath := filepath.Join(rootDir, defaultConfigFilePath)
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// Write default config file if missing.
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if !cmn.FileExists(configFilePath) {
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writeDefaultConfigFile(configFilePath)
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}
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}
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// XXX: this func should probably be called by cmd/tendermint/commands/init.go
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// alongside the writing of the genesis.json and priv_validator.json
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func writeDefaultConfigFile(configFilePath string) {
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WriteConfigFile(configFilePath, DefaultConfig())
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}
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// WriteConfigFile renders config using the template and writes it to configFilePath.
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func WriteConfigFile(configFilePath string, config *Config) {
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var buffer bytes.Buffer
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if err := configTemplate.Execute(&buffer, config); err != nil {
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panic(err)
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}
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cmn.MustWriteFile(configFilePath, buffer.Bytes(), 0644)
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}
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// Note: any changes to the comments/variables/mapstructure
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// must be reflected in the appropriate struct in config/config.go
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const defaultConfigTemplate = `# This is a TOML config file.
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# For more information, see https://github.com/toml-lang/toml
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##### main base config options #####
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# TCP or UNIX socket address of the ABCI application,
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# or the name of an ABCI application compiled in with the Tendermint binary
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proxy_app = "{{ .BaseConfig.ProxyApp }}"
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# A custom human readable name for this node
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moniker = "{{ .BaseConfig.Moniker }}"
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# If this node is many blocks behind the tip of the chain, FastSync
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# allows them to catchup quickly by downloading blocks in parallel
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# and verifying their commits
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fast_sync = {{ .BaseConfig.FastSync }}
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# Database backend: leveldb | memdb
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db_backend = "{{ .BaseConfig.DBBackend }}"
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# Database directory
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db_dir = "{{ js .BaseConfig.DBPath }}"
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# Output level for logging, including package level options
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log_level = "{{ .BaseConfig.LogLevel }}"
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##### additional base config options #####
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# Path to the JSON file containing the initial validator set and other meta data
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genesis_file = "{{ js .BaseConfig.Genesis }}"
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# Path to the JSON file containing the private key to use as a validator in the consensus protocol
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priv_validator_file = "{{ js .BaseConfig.PrivValidator }}"
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# Path to the JSON file containing the private key to use for node authentication in the p2p protocol
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node_key_file = "{{ js .BaseConfig.NodeKey}}"
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# Mechanism to connect to the ABCI application: socket | grpc
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abci = "{{ .BaseConfig.ABCI }}"
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# TCP or UNIX socket address for the profiling server to listen on
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prof_laddr = "{{ .BaseConfig.ProfListenAddress }}"
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# If true, query the ABCI app on connecting to a new peer
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# so the app can decide if we should keep the connection or not
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filter_peers = {{ .BaseConfig.FilterPeers }}
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##### advanced configuration options #####
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##### rpc server configuration options #####
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[rpc]
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# TCP or UNIX socket address for the RPC server to listen on
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laddr = "{{ .RPC.ListenAddress }}"
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# TCP or UNIX socket address for the gRPC server to listen on
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# NOTE: This server only supports /broadcast_tx_commit
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grpc_laddr = "{{ .RPC.GRPCListenAddress }}"
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# Maximum number of simultaneous connections.
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# Does not include RPC (HTTP&WebSocket) connections. See max_open_connections
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# If you want to accept more significant number than the default, make sure
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# you increase your OS limits.
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# 0 - unlimited.
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# Should be < {ulimit -Sn} - {MaxNumInboundPeers} - {MaxNumOutboundPeers} - {N of wal, db and other open files}
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# 1024 - 40 - 10 - 50 = 924 = ~900
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grpc_max_open_connections = {{ .RPC.GRPCMaxOpenConnections }}
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# Activate unsafe RPC commands like /dial_seeds and /unsafe_flush_mempool
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unsafe = {{ .RPC.Unsafe }}
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# Maximum number of simultaneous connections (including WebSocket).
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# Does not include gRPC connections. See grpc_max_open_connections
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# If you want to accept more significant number than the default, make sure
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# you increase your OS limits.
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# 0 - unlimited.
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# Should be < {ulimit -Sn} - {MaxNumInboundPeers} - {MaxNumOutboundPeers} - {N of wal, db and other open files}
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# 1024 - 40 - 10 - 50 = 924 = ~900
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max_open_connections = {{ .RPC.MaxOpenConnections }}
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##### peer to peer configuration options #####
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[p2p]
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# Address to listen for incoming connections
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laddr = "{{ .P2P.ListenAddress }}"
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# Address to advertise to peers for them to dial
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# If empty, will use the same port as the laddr,
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# and will introspect on the listener or use UPnP
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# to figure out the address.
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external_address = "{{ .P2P.ExternalAddress }}"
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# Comma separated list of seed nodes to connect to
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seeds = "{{ .P2P.Seeds }}"
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# Comma separated list of nodes to keep persistent connections to
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persistent_peers = "{{ .P2P.PersistentPeers }}"
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# UPNP port forwarding
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upnp = {{ .P2P.UPNP }}
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# Path to address book
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addr_book_file = "{{ js .P2P.AddrBook }}"
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# Set true for strict address routability rules
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addr_book_strict = {{ .P2P.AddrBookStrict }}
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# Time to wait before flushing messages out on the connection, in ms
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flush_throttle_timeout = {{ .P2P.FlushThrottleTimeout }}
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# Maximum number of inbound peers
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max_num_inbound_peers = {{ .P2P.MaxNumInboundPeers }}
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# Maximum number of outbound peers to connect to, excluding persistent peers
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max_num_outbound_peers = {{ .P2P.MaxNumOutboundPeers }}
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# Maximum size of a message packet payload, in bytes
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max_packet_msg_payload_size = {{ .P2P.MaxPacketMsgPayloadSize }}
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# Rate at which packets can be sent, in bytes/second
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send_rate = {{ .P2P.SendRate }}
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# Rate at which packets can be received, in bytes/second
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recv_rate = {{ .P2P.RecvRate }}
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# Set true to enable the peer-exchange reactor
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pex = {{ .P2P.PexReactor }}
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# Seed mode, in which node constantly crawls the network and looks for
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# peers. If another node asks it for addresses, it responds and disconnects.
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#
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# Does not work if the peer-exchange reactor is disabled.
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seed_mode = {{ .P2P.SeedMode }}
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# Comma separated list of peer IDs to keep private (will not be gossiped to other peers)
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private_peer_ids = "{{ .P2P.PrivatePeerIDs }}"
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##### mempool configuration options #####
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[mempool]
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recheck = {{ .Mempool.Recheck }}
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recheck_empty = {{ .Mempool.RecheckEmpty }}
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broadcast = {{ .Mempool.Broadcast }}
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wal_dir = "{{ js .Mempool.WalPath }}"
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# size of the mempool
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size = {{ .Mempool.Size }}
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# size of the cache (used to filter transactions we saw earlier)
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cache_size = {{ .Mempool.CacheSize }}
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##### consensus configuration options #####
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[consensus]
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wal_file = "{{ js .Consensus.WalPath }}"
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# All timeouts are in milliseconds
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timeout_propose = {{ .Consensus.TimeoutPropose }}
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timeout_propose_delta = {{ .Consensus.TimeoutProposeDelta }}
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timeout_prevote = {{ .Consensus.TimeoutPrevote }}
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timeout_prevote_delta = {{ .Consensus.TimeoutPrevoteDelta }}
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timeout_precommit = {{ .Consensus.TimeoutPrecommit }}
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timeout_precommit_delta = {{ .Consensus.TimeoutPrecommitDelta }}
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timeout_commit = {{ .Consensus.TimeoutCommit }}
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# Make progress as soon as we have all the precommits (as if TimeoutCommit = 0)
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skip_timeout_commit = {{ .Consensus.SkipTimeoutCommit }}
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# EmptyBlocks mode and possible interval between empty blocks in seconds
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create_empty_blocks = {{ .Consensus.CreateEmptyBlocks }}
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create_empty_blocks_interval = {{ .Consensus.CreateEmptyBlocksInterval }}
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# Reactor sleep duration parameters are in milliseconds
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peer_gossip_sleep_duration = {{ .Consensus.PeerGossipSleepDuration }}
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peer_query_maj23_sleep_duration = {{ .Consensus.PeerQueryMaj23SleepDuration }}
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##### transactions indexer configuration options #####
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[tx_index]
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# What indexer to use for transactions
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#
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# Options:
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# 1) "null" (default)
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# 2) "kv" - the simplest possible indexer, backed by key-value storage (defaults to levelDB; see DBBackend).
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indexer = "{{ .TxIndex.Indexer }}"
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# Comma-separated list of tags to index (by default the only tag is tx hash)
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#
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# It's recommended to index only a subset of tags due to possible memory
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# bloat. This is, of course, depends on the indexer's DB and the volume of
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# transactions.
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index_tags = "{{ .TxIndex.IndexTags }}"
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# When set to true, tells indexer to index all tags. Note this may be not
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# desirable (see the comment above). IndexTags has a precedence over
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# IndexAllTags (i.e. when given both, IndexTags will be indexed).
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index_all_tags = {{ .TxIndex.IndexAllTags }}
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##### instrumentation configuration options #####
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[instrumentation]
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# When true, Prometheus metrics are served under /metrics on
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# PrometheusListenAddr.
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# Check out the documentation for the list of available metrics.
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prometheus = {{ .Instrumentation.Prometheus }}
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# Address to listen for Prometheus collector(s) connections
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prometheus_listen_addr = "{{ .Instrumentation.PrometheusListenAddr }}"
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# Maximum number of simultaneous connections.
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# If you want to accept more significant number than the default, make sure
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# you increase your OS limits.
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# 0 - unlimited.
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max_open_connections = {{ .Instrumentation.MaxOpenConnections }}
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`
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/****** these are for test settings ***********/
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func ResetTestRoot(testName string) *Config {
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rootDir := os.ExpandEnv("$HOME/.tendermint_test")
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rootDir = filepath.Join(rootDir, testName)
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// Remove ~/.tendermint_test_bak
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if cmn.FileExists(rootDir + "_bak") {
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if err := os.RemoveAll(rootDir + "_bak"); err != nil {
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cmn.PanicSanity(err.Error())
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}
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}
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// Move ~/.tendermint_test to ~/.tendermint_test_bak
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if cmn.FileExists(rootDir) {
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if err := os.Rename(rootDir, rootDir+"_bak"); err != nil {
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cmn.PanicSanity(err.Error())
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}
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}
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// Create new dir
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if err := cmn.EnsureDir(rootDir, 0700); err != nil {
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cmn.PanicSanity(err.Error())
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}
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if err := cmn.EnsureDir(filepath.Join(rootDir, defaultConfigDir), 0700); err != nil {
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cmn.PanicSanity(err.Error())
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}
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if err := cmn.EnsureDir(filepath.Join(rootDir, defaultDataDir), 0700); err != nil {
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cmn.PanicSanity(err.Error())
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}
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baseConfig := DefaultBaseConfig()
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configFilePath := filepath.Join(rootDir, defaultConfigFilePath)
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genesisFilePath := filepath.Join(rootDir, baseConfig.Genesis)
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privFilePath := filepath.Join(rootDir, baseConfig.PrivValidator)
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// Write default config file if missing.
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if !cmn.FileExists(configFilePath) {
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writeDefaultConfigFile(configFilePath)
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}
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if !cmn.FileExists(genesisFilePath) {
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cmn.MustWriteFile(genesisFilePath, []byte(testGenesis), 0644)
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}
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// we always overwrite the priv val
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cmn.MustWriteFile(privFilePath, []byte(testPrivValidator), 0644)
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config := TestConfig().SetRoot(rootDir)
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return config
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}
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var testGenesis = `{
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"genesis_time": "0001-01-01T00:00:00.000Z",
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"chain_id": "tendermint_test",
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"validators": [
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{
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"pub_key": {
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"type": "tendermint/PubKeyEd25519",
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"value":"AT/+aaL1eB0477Mud9JMm8Sh8BIvOYlPGC9KkIUmFaE="
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},
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"power": "10",
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"name": ""
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}
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],
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"app_hash": ""
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}`
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var testPrivValidator = `{
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"address": "A3258DCBF45DCA0DF052981870F2D1441A36D145",
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"pub_key": {
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"type": "tendermint/PubKeyEd25519",
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"value": "AT/+aaL1eB0477Mud9JMm8Sh8BIvOYlPGC9KkIUmFaE="
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},
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"priv_key": {
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"type": "tendermint/PrivKeyEd25519",
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"value": "EVkqJO/jIXp3rkASXfh9YnyToYXRXhBr6g9cQVxPFnQBP/5povV4HTjvsy530kybxKHwEi85iU8YL0qQhSYVoQ=="
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},
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"last_height": "0",
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"last_round": "0",
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"last_step": 0
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}`
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