iota_swarm_config/
node_config_builder.rs

1// Copyright (c) Mysten Labs, Inc.
2// Modifications Copyright (c) 2024 IOTA Stiftung
3// SPDX-License-Identifier: Apache-2.0
4
5use std::{net::SocketAddr, path::PathBuf, time::Duration};
6
7use fastcrypto::{
8    encoding::{Encoding, Hex},
9    traits::KeyPair,
10};
11use iota_config::{
12    AUTHORITIES_DB_NAME, CONSENSUS_DB_NAME, ConsensusConfig, FULL_NODE_DB_PATH,
13    IOTA_GENESIS_MIGRATION_TX_DATA_FILENAME, NodeConfig, local_ip_utils,
14    node::{
15        AuthorityKeyPairWithPath, AuthorityOverloadConfig, AuthorityStorePruningConfig,
16        CheckpointExecutorConfig, DBCheckpointConfig, DEFAULT_GRPC_CONCURRENCY_LIMIT,
17        ExecutionCacheConfig, ExecutionCacheType, ExpensiveSafetyCheckConfig, Genesis,
18        GrpcApiConfig, KeyPairWithPath, RunWithRange, StateArchiveConfig, StateSnapshotConfig,
19        default_enable_index_processing, default_end_of_epoch_broadcast_channel_capacity,
20        default_zklogin_oauth_providers,
21    },
22    p2p::{DiscoveryConfig, P2pConfig, SeedPeer, StateSyncConfig},
23    verifier_signing_config::VerifierSigningConfig,
24};
25use iota_names::config::IotaNamesConfig;
26use iota_protocol_config::Chain;
27use iota_types::{
28    crypto::{AuthorityKeyPair, AuthorityPublicKeyBytes, IotaKeyPair, NetworkKeyPair},
29    multiaddr::Multiaddr,
30    supported_protocol_versions::SupportedProtocolVersions,
31    traffic_control::{PolicyConfig, RemoteFirewallConfig},
32};
33
34use crate::{
35    genesis_config::{ValidatorGenesisConfig, ValidatorGenesisConfigBuilder},
36    network_config::NetworkConfig,
37};
38
39/// This builder contains information that's not included in
40/// ValidatorGenesisConfig for building a validator NodeConfig. It can be used
41/// to build either a genesis validator or a new validator.
42#[derive(Clone, Default)]
43pub struct ValidatorConfigBuilder {
44    config_directory: Option<PathBuf>,
45    supported_protocol_versions: Option<SupportedProtocolVersions>,
46    force_unpruned_checkpoints: bool,
47    jwk_fetch_interval: Option<Duration>,
48    authority_overload_config: Option<AuthorityOverloadConfig>,
49    execution_cache_type: Option<ExecutionCacheType>,
50    execution_cache_config: Option<ExecutionCacheConfig>,
51    data_ingestion_dir: Option<PathBuf>,
52    policy_config: Option<PolicyConfig>,
53    firewall_config: Option<RemoteFirewallConfig>,
54    max_submit_position: Option<usize>,
55    submit_delay_step_override_millis: Option<u64>,
56    discovery_config: Option<DiscoveryConfig>,
57    chain_override: Option<Chain>,
58}
59
60impl ValidatorConfigBuilder {
61    pub fn new() -> Self {
62        Self {
63            ..Default::default()
64        }
65    }
66
67    pub fn with_chain_override(mut self, chain: Chain) -> Self {
68        assert!(self.chain_override.is_none(), "Chain override already set");
69        self.chain_override = Some(chain);
70        self
71    }
72
73    pub fn with_config_directory(mut self, config_directory: PathBuf) -> Self {
74        assert!(self.config_directory.is_none());
75        self.config_directory = Some(config_directory);
76        self
77    }
78
79    pub fn with_supported_protocol_versions(
80        mut self,
81        supported_protocol_versions: SupportedProtocolVersions,
82    ) -> Self {
83        assert!(self.supported_protocol_versions.is_none());
84        self.supported_protocol_versions = Some(supported_protocol_versions);
85        self
86    }
87
88    pub fn with_unpruned_checkpoints(mut self) -> Self {
89        self.force_unpruned_checkpoints = true;
90        self
91    }
92
93    pub fn with_jwk_fetch_interval(mut self, i: Duration) -> Self {
94        self.jwk_fetch_interval = Some(i);
95        self
96    }
97
98    pub fn with_authority_overload_config(mut self, config: AuthorityOverloadConfig) -> Self {
99        self.authority_overload_config = Some(config);
100        self
101    }
102
103    pub fn with_execution_cache_type(mut self, execution_cache_type: ExecutionCacheType) -> Self {
104        self.execution_cache_type = Some(execution_cache_type);
105        self
106    }
107
108    pub fn with_execution_cache_config(mut self, config: ExecutionCacheConfig) -> Self {
109        self.execution_cache_config = Some(config);
110        self
111    }
112
113    pub fn with_data_ingestion_dir(mut self, path: PathBuf) -> Self {
114        self.data_ingestion_dir = Some(path);
115        self
116    }
117
118    pub fn with_policy_config(mut self, config: Option<PolicyConfig>) -> Self {
119        self.policy_config = config;
120        self
121    }
122
123    pub fn with_firewall_config(mut self, config: Option<RemoteFirewallConfig>) -> Self {
124        self.firewall_config = config;
125        self
126    }
127
128    pub fn with_max_submit_position(mut self, max_submit_position: usize) -> Self {
129        self.max_submit_position = Some(max_submit_position);
130        self
131    }
132
133    pub fn with_submit_delay_step_override_millis(
134        mut self,
135        submit_delay_step_override_millis: u64,
136    ) -> Self {
137        self.submit_delay_step_override_millis = Some(submit_delay_step_override_millis);
138        self
139    }
140
141    pub fn with_discovery_config(mut self, discovery_config: DiscoveryConfig) -> Self {
142        self.discovery_config = Some(discovery_config);
143        self
144    }
145
146    pub fn build_without_genesis(self, validator: ValidatorGenesisConfig) -> NodeConfig {
147        let key_path = get_key_path(&validator.authority_key_pair);
148        let config_directory = self
149            .config_directory
150            .unwrap_or_else(|| tempfile::tempdir().unwrap().keep());
151        let migration_tx_data_path =
152            Some(config_directory.join(IOTA_GENESIS_MIGRATION_TX_DATA_FILENAME));
153        let db_path = config_directory
154            .join(AUTHORITIES_DB_NAME)
155            .join(key_path.clone());
156        let network_address = validator.network_address;
157        let consensus_db_path = config_directory.join(CONSENSUS_DB_NAME).join(key_path);
158        let localhost = local_ip_utils::localhost_for_testing();
159        let consensus_config = ConsensusConfig {
160            db_path: consensus_db_path,
161            db_retention_epochs: None,
162            db_pruner_period_secs: None,
163            max_pending_transactions: None,
164            max_submit_position: self.max_submit_position,
165            submit_delay_step_override_millis: self.submit_delay_step_override_millis,
166            parameters: Default::default(),
167            starfish_parameters: Default::default(),
168        };
169
170        let p2p_config = P2pConfig {
171            listen_address: validator.p2p_listen_address.unwrap_or_else(|| {
172                validator
173                    .p2p_address
174                    .udp_multiaddr_to_listen_address()
175                    .unwrap()
176            }),
177            external_address: Some(validator.p2p_address),
178            // Set a shorter timeout for checkpoint content download in tests, since
179            // checkpoint pruning also happens much faster, and network is local.
180            state_sync: Some(StateSyncConfig {
181                checkpoint_content_timeout_ms: Some(10_000),
182                ..Default::default()
183            }),
184            // Use discovery config if provided
185            discovery: self.discovery_config,
186            ..Default::default()
187        };
188
189        let mut pruning_config = AuthorityStorePruningConfig::default();
190        if self.force_unpruned_checkpoints {
191            pruning_config.set_num_epochs_to_retain_for_checkpoints(None);
192        }
193        let pruning_config = pruning_config;
194        let checkpoint_executor_config = CheckpointExecutorConfig {
195            data_ingestion_dir: self.data_ingestion_dir,
196            ..Default::default()
197        };
198
199        NodeConfig {
200            authority_key_pair: AuthorityKeyPairWithPath::new(validator.authority_key_pair),
201            network_key_pair: KeyPairWithPath::new(IotaKeyPair::Ed25519(
202                validator.network_key_pair,
203            )),
204            account_key_pair: KeyPairWithPath::new(validator.account_key_pair),
205            protocol_key_pair: KeyPairWithPath::new(IotaKeyPair::Ed25519(
206                validator.protocol_key_pair,
207            )),
208            db_path,
209            network_address,
210            metrics_address: validator.metrics_address,
211            admin_interface_address: validator.admin_interface_address,
212            json_rpc_address: local_ip_utils::new_tcp_address_for_testing(&localhost)
213                .to_socket_addr()
214                .unwrap(),
215            consensus_config: Some(consensus_config),
216            remove_deprecated_tables: false,
217            enable_index_processing: default_enable_index_processing(),
218            genesis: Genesis::new_empty(),
219            migration_tx_data_path,
220            grpc_load_shed: None,
221            grpc_concurrency_limit: Some(DEFAULT_GRPC_CONCURRENCY_LIMIT),
222            p2p_config,
223            authority_store_pruning_config: pruning_config,
224            end_of_epoch_broadcast_channel_capacity:
225                default_end_of_epoch_broadcast_channel_capacity(),
226            checkpoint_executor_config,
227            metrics: None,
228            supported_protocol_versions: self.supported_protocol_versions,
229            db_checkpoint_config: Default::default(),
230            // By default, expensive checks will be enabled in debug build, but not in release
231            // build.
232            expensive_safety_check_config: ExpensiveSafetyCheckConfig::default(),
233            transaction_deny_config: Default::default(),
234            certificate_deny_config: Default::default(),
235            state_debug_dump_config: Default::default(),
236            state_archive_write_config: StateArchiveConfig::default(),
237            state_archive_read_config: vec![],
238            state_snapshot_write_config: StateSnapshotConfig::default(),
239            indexer_max_subscriptions: Default::default(),
240            transaction_kv_store_read_config: Default::default(),
241            transaction_kv_store_write_config: None,
242            enable_rest_api: true,
243            rest: Some(iota_rest_api::Config {
244                enable_unstable_apis: Some(true),
245                ..Default::default()
246            }),
247            jwk_fetch_interval_seconds: self
248                .jwk_fetch_interval
249                .map(|i| i.as_secs())
250                .unwrap_or(3600),
251            zklogin_oauth_providers: default_zklogin_oauth_providers(),
252            authority_overload_config: self.authority_overload_config.unwrap_or_default(),
253            execution_cache: self.execution_cache_type.unwrap_or_default(),
254            execution_cache_config: self.execution_cache_config.unwrap_or_default(),
255            run_with_range: None,
256            jsonrpc_server_type: None,
257            policy_config: self.policy_config,
258            firewall_config: self.firewall_config,
259            enable_validator_tx_finalizer: true,
260            verifier_signing_config: VerifierSigningConfig::default(),
261            enable_db_write_stall: None,
262            iota_names_config: None,
263            enable_grpc_api: false,
264            grpc_api_config: None,
265            chain_override_for_testing: self.chain_override,
266        }
267    }
268
269    pub fn build(
270        self,
271        validator: ValidatorGenesisConfig,
272        genesis: iota_config::genesis::Genesis,
273    ) -> NodeConfig {
274        let mut config = self.build_without_genesis(validator);
275        config.genesis = iota_config::node::Genesis::new(genesis);
276        config
277    }
278
279    pub fn build_new_validator<R: rand::RngCore + rand::CryptoRng>(
280        self,
281        rng: &mut R,
282        network_config: &NetworkConfig,
283    ) -> NodeConfig {
284        let validator_config = ValidatorGenesisConfigBuilder::new().build(rng);
285        self.build(validator_config, network_config.genesis.clone())
286    }
287}
288
289#[derive(Clone, Debug, Default)]
290pub struct FullnodeConfigBuilder {
291    config_directory: Option<PathBuf>,
292    // port for json rpc api
293    rpc_port: Option<u16>,
294    rpc_addr: Option<SocketAddr>,
295    supported_protocol_versions: Option<SupportedProtocolVersions>,
296    db_checkpoint_config: Option<DBCheckpointConfig>,
297    expensive_safety_check_config: Option<ExpensiveSafetyCheckConfig>,
298    db_path: Option<PathBuf>,
299    network_address: Option<Multiaddr>,
300    json_rpc_address: Option<SocketAddr>,
301    metrics_address: Option<SocketAddr>,
302    admin_interface_address: Option<SocketAddr>,
303    genesis: Option<Genesis>,
304    p2p_external_address: Option<Multiaddr>,
305    p2p_listen_address: Option<SocketAddr>,
306    network_key_pair: Option<KeyPairWithPath>,
307    run_with_range: Option<RunWithRange>,
308    policy_config: Option<PolicyConfig>,
309    fw_config: Option<RemoteFirewallConfig>,
310    data_ingestion_dir: Option<PathBuf>,
311    disable_pruning: bool,
312    iota_names_config: Option<IotaNamesConfig>,
313    grpc_api_config: Option<GrpcApiConfig>,
314    discovery_config: Option<DiscoveryConfig>,
315    chain_override: Option<Chain>,
316}
317
318impl FullnodeConfigBuilder {
319    pub fn new() -> Self {
320        Self::default()
321    }
322
323    pub fn with_chain_override(mut self, chain: Chain) -> Self {
324        assert!(self.chain_override.is_none(), "Chain override already set");
325        self.chain_override = Some(chain);
326        self
327    }
328
329    pub fn with_config_directory(mut self, config_directory: PathBuf) -> Self {
330        self.config_directory = Some(config_directory);
331        self
332    }
333
334    pub fn with_rpc_port(mut self, port: u16) -> Self {
335        assert!(self.rpc_addr.is_none() && self.rpc_port.is_none());
336        self.rpc_port = Some(port);
337        self
338    }
339
340    pub fn with_rpc_addr(mut self, addr: impl Into<SocketAddr>) -> Self {
341        assert!(self.rpc_addr.is_none() && self.rpc_port.is_none());
342        self.rpc_addr = Some(addr.into());
343        self
344    }
345
346    pub fn with_supported_protocol_versions(mut self, versions: SupportedProtocolVersions) -> Self {
347        self.supported_protocol_versions = Some(versions);
348        self
349    }
350
351    pub fn with_db_checkpoint_config(mut self, db_checkpoint_config: DBCheckpointConfig) -> Self {
352        self.db_checkpoint_config = Some(db_checkpoint_config);
353        self
354    }
355
356    pub fn with_disable_pruning(mut self, disable_pruning: bool) -> Self {
357        self.disable_pruning = disable_pruning;
358        self
359    }
360
361    pub fn with_expensive_safety_check_config(
362        mut self,
363        expensive_safety_check_config: ExpensiveSafetyCheckConfig,
364    ) -> Self {
365        self.expensive_safety_check_config = Some(expensive_safety_check_config);
366        self
367    }
368
369    pub fn with_db_path(mut self, db_path: PathBuf) -> Self {
370        self.db_path = Some(db_path);
371        self
372    }
373
374    pub fn with_network_address(mut self, network_address: Multiaddr) -> Self {
375        self.network_address = Some(network_address);
376        self
377    }
378
379    pub fn with_json_rpc_address(mut self, json_rpc_address: impl Into<SocketAddr>) -> Self {
380        self.json_rpc_address = Some(json_rpc_address.into());
381        self
382    }
383
384    pub fn with_metrics_address(mut self, metrics_address: impl Into<SocketAddr>) -> Self {
385        self.metrics_address = Some(metrics_address.into());
386        self
387    }
388
389    pub fn with_admin_interface_address(
390        mut self,
391        admin_interface_address: Option<impl Into<SocketAddr>>,
392    ) -> Self {
393        self.admin_interface_address = admin_interface_address.map(|addr| addr.into());
394        self
395    }
396
397    pub fn with_genesis(mut self, genesis: Genesis) -> Self {
398        self.genesis = Some(genesis);
399        self
400    }
401
402    pub fn with_p2p_external_address(mut self, p2p_external_address: Multiaddr) -> Self {
403        self.p2p_external_address = Some(p2p_external_address);
404        self
405    }
406
407    pub fn with_p2p_listen_address(mut self, p2p_listen_address: impl Into<SocketAddr>) -> Self {
408        self.p2p_listen_address = Some(p2p_listen_address.into());
409        self
410    }
411
412    pub fn with_network_key_pair(mut self, network_key_pair: Option<NetworkKeyPair>) -> Self {
413        if let Some(network_key_pair) = network_key_pair {
414            self.network_key_pair =
415                Some(KeyPairWithPath::new(IotaKeyPair::Ed25519(network_key_pair)));
416        }
417        self
418    }
419
420    pub fn with_run_with_range(mut self, run_with_range: Option<RunWithRange>) -> Self {
421        if let Some(run_with_range) = run_with_range {
422            self.run_with_range = Some(run_with_range);
423        }
424        self
425    }
426
427    pub fn with_policy_config(mut self, config: Option<PolicyConfig>) -> Self {
428        self.policy_config = config;
429        self
430    }
431
432    pub fn with_fw_config(mut self, config: Option<RemoteFirewallConfig>) -> Self {
433        self.fw_config = config;
434        self
435    }
436
437    pub fn with_data_ingestion_dir(mut self, path: Option<PathBuf>) -> Self {
438        self.data_ingestion_dir = path;
439        self
440    }
441
442    pub fn with_iota_names_config(mut self, config: Option<IotaNamesConfig>) -> Self {
443        self.iota_names_config = config;
444        self
445    }
446
447    pub fn with_grpc_api_config(mut self, config: GrpcApiConfig) -> Self {
448        self.grpc_api_config = Some(config);
449        self
450    }
451
452    pub fn with_discovery_config(mut self, discovery_config: DiscoveryConfig) -> Self {
453        self.discovery_config = Some(discovery_config);
454        self
455    }
456
457    pub fn build_from_parts<R: rand::RngCore + rand::CryptoRng>(
458        self,
459        rng: &mut R,
460        validator_configs: &[NodeConfig],
461        genesis: iota_config::node::Genesis,
462    ) -> NodeConfig {
463        // Take advantage of ValidatorGenesisConfigBuilder to build the keypairs and
464        // addresses, even though this is a fullnode.
465        let validator_config = ValidatorGenesisConfigBuilder::new().build(rng);
466        let ip = validator_config
467            .network_address
468            .to_socket_addr()
469            .unwrap()
470            .ip()
471            .to_string();
472
473        let key_path = get_key_path(&validator_config.authority_key_pair);
474        let config_directory = self
475            .config_directory
476            .unwrap_or_else(|| tempfile::tempdir().unwrap().keep());
477
478        let migration_tx_data_path =
479            Some(config_directory.join(IOTA_GENESIS_MIGRATION_TX_DATA_FILENAME));
480
481        let p2p_config = {
482            let seed_peers = validator_configs
483                .iter()
484                .map(|config| SeedPeer {
485                    peer_id: Some(anemo::PeerId(
486                        config.network_key_pair().public().0.to_bytes(),
487                    )),
488                    address: config.p2p_config.external_address.clone().unwrap(),
489                })
490                .collect();
491
492            P2pConfig {
493                listen_address: self.p2p_listen_address.unwrap_or_else(|| {
494                    validator_config.p2p_listen_address.unwrap_or_else(|| {
495                        validator_config
496                            .p2p_address
497                            .udp_multiaddr_to_listen_address()
498                            .unwrap()
499                    })
500                }),
501                external_address: self
502                    .p2p_external_address
503                    .or(Some(validator_config.p2p_address.clone())),
504                seed_peers,
505                // Set a shorter timeout for checkpoint content download in tests, since
506                // checkpoint pruning also happens much faster, and network is local.
507                state_sync: Some(StateSyncConfig {
508                    checkpoint_content_timeout_ms: Some(10_000),
509                    ..Default::default()
510                }),
511                // Use discovery config if provided
512                discovery: self.discovery_config,
513                ..Default::default()
514            }
515        };
516
517        let json_rpc_address = self.rpc_addr.unwrap_or_else(|| {
518            let rpc_port = self
519                .rpc_port
520                .unwrap_or_else(|| local_ip_utils::get_available_port(&ip));
521            format!("{ip}:{rpc_port}").parse().unwrap()
522        });
523
524        let checkpoint_executor_config = CheckpointExecutorConfig {
525            data_ingestion_dir: self.data_ingestion_dir,
526            ..Default::default()
527        };
528
529        let mut pruning_config = AuthorityStorePruningConfig::default();
530        if self.disable_pruning {
531            pruning_config.set_num_epochs_to_retain_for_checkpoints(None);
532            pruning_config.set_num_epochs_to_retain(u64::MAX);
533        };
534
535        NodeConfig {
536            authority_key_pair: AuthorityKeyPairWithPath::new(validator_config.authority_key_pair),
537            account_key_pair: KeyPairWithPath::new(validator_config.account_key_pair),
538            protocol_key_pair: KeyPairWithPath::new(IotaKeyPair::Ed25519(
539                validator_config.protocol_key_pair,
540            )),
541            network_key_pair: self.network_key_pair.unwrap_or(KeyPairWithPath::new(
542                IotaKeyPair::Ed25519(validator_config.network_key_pair),
543            )),
544            db_path: self
545                .db_path
546                .unwrap_or(config_directory.join(FULL_NODE_DB_PATH).join(key_path)),
547            network_address: self
548                .network_address
549                .unwrap_or(validator_config.network_address),
550            metrics_address: self
551                .metrics_address
552                .unwrap_or(local_ip_utils::new_local_tcp_socket_for_testing()),
553            admin_interface_address: self
554                .admin_interface_address
555                .unwrap_or(local_ip_utils::new_local_tcp_socket_for_testing()),
556            json_rpc_address: self.json_rpc_address.unwrap_or(json_rpc_address),
557            consensus_config: None,
558            remove_deprecated_tables: false,
559            enable_index_processing: default_enable_index_processing(),
560            genesis,
561            migration_tx_data_path,
562            grpc_load_shed: None,
563            grpc_concurrency_limit: None,
564            p2p_config,
565            authority_store_pruning_config: pruning_config,
566            end_of_epoch_broadcast_channel_capacity:
567                default_end_of_epoch_broadcast_channel_capacity(),
568            checkpoint_executor_config,
569            metrics: None,
570            supported_protocol_versions: self.supported_protocol_versions,
571            db_checkpoint_config: self.db_checkpoint_config.unwrap_or_default(),
572            expensive_safety_check_config: self
573                .expensive_safety_check_config
574                .unwrap_or_else(ExpensiveSafetyCheckConfig::new_enable_all),
575            transaction_deny_config: Default::default(),
576            certificate_deny_config: Default::default(),
577            state_debug_dump_config: Default::default(),
578            state_archive_write_config: StateArchiveConfig::default(),
579            state_archive_read_config: vec![],
580            state_snapshot_write_config: StateSnapshotConfig::default(),
581            indexer_max_subscriptions: Default::default(),
582            transaction_kv_store_read_config: Default::default(),
583            transaction_kv_store_write_config: Default::default(),
584            enable_rest_api: true,
585            rest: Some(iota_rest_api::Config {
586                enable_unstable_apis: Some(true),
587                ..Default::default()
588            }),
589            // note: not used by fullnodes.
590            jwk_fetch_interval_seconds: 3600,
591            zklogin_oauth_providers: default_zklogin_oauth_providers(),
592            authority_overload_config: Default::default(),
593            run_with_range: self.run_with_range,
594            jsonrpc_server_type: None,
595            policy_config: self.policy_config,
596            firewall_config: self.fw_config,
597            execution_cache: ExecutionCacheType::default(),
598            execution_cache_config: ExecutionCacheConfig::default(),
599            // This is a validator specific feature.
600            enable_validator_tx_finalizer: false,
601            verifier_signing_config: VerifierSigningConfig::default(),
602            enable_db_write_stall: None,
603            iota_names_config: self.iota_names_config,
604            enable_grpc_api: self.grpc_api_config.is_some(),
605            grpc_api_config: self.grpc_api_config,
606            chain_override_for_testing: self.chain_override,
607        }
608    }
609
610    pub fn build<R: rand::RngCore + rand::CryptoRng>(
611        self,
612        rng: &mut R,
613        network_config: &NetworkConfig,
614    ) -> NodeConfig {
615        let genesis = self
616            .genesis
617            .as_ref()
618            .or_else(|| network_config.get_validator_genesis())
619            .cloned()
620            .unwrap_or_else(|| iota_config::node::Genesis::new(network_config.genesis.clone()));
621        self.build_from_parts(rng, network_config.validator_configs(), genesis)
622    }
623}
624
625/// Given a validator keypair, return a path that can be used to identify the
626/// validator.
627fn get_key_path(key_pair: &AuthorityKeyPair) -> String {
628    let public_key: AuthorityPublicKeyBytes = key_pair.public().into();
629    let mut key_path = Hex::encode(public_key);
630    // 12 is rather arbitrary here but it's a nice balance between being short and
631    // being unique.
632    key_path.truncate(12);
633    key_path
634}
iota_swarm_config/node_config_builder.rs

iota_swarm_config/
node_config_builder.rs
