Files
nym/nym-node-status-api
Jędrzej Stuczyński 46c67440bb Mixnode stress testing (#6575)
* Squashing the mix stress testing branch (#6575)

reduced chain watcher per block log severity

update network monitors contract semver to 1.0.0

fix build issues

fix mixnet client dropping initial packet on egress reconnection

adjusted logs for network monitor agent

changed default testing interval to 2h

refresh NM contract information

explicit return type for batch submission

for mixnet listener task to get scheduled before beginning connectivity test

make sure to always use canonical ip for network monitor noise keys

feat: NMv3: make agents decide egress port (#6746)

add config v12->v13 config migration for nym nodes

fix formatting in wallet types

simplified client config creation

remove other swagger redirect

removed swagger redirect on /swagger/ route

log version info on startup

add workflows, contract address, and dockerfile

bugfix: use correct endpoints when setting up orchestrator (#6733)

clippy

adjust DEFAULT_MIN_STRESS_TESTED_NODES ratio

expose route with new performance metrics

fixes and additional docs

use stress testing scores

stub for usage of stress testing scores

stub traits

added new fields to nym-api config controlling usage of stress test data

guard against duplicate packets

prevent usage of chain_authorisation_check_max_attempts with value of 0

make sure duplicate results cant be inserted into the db

submit test results from orchestrator on an interval

docs and fixes

nym-api side of handling result submission

stubs for submitting results

NM orchestrator verifying nym-api result submission permissions

NM orchestrator to update announced key on startup

allow NM orchestrator to announce its identity key to the contract

stubs within nym-api for accepting NMv3 results

added additional metrics

docs

bugfixes + making sure to only assign mixnode testruns

fixed node refresher to only retrieve mixnodes and add additional metrics

topology metrics

defined basic prometheus metrics

authorised endpoint for returning prometheus data

create initial stub for prometheus metrics

post rebasing fixes

adjusted routes

missing implementation for storage getters

a lot of new stubs and db accessors

stubs for results endpoints

update utoipa tags for agent rountes

shared auth between metrics and results

moved stale results eviction into the interval.tick branch

refactor and comments

create background process to evict stale data

include sphinx packet delay as part of the stats

fix mock construction

add median to the calculated latency distribution

remove unused imports

cleanup

performing testrun and submitting the results

assigning testruns to requesting agents

basic stub for http server for the NMv3 orchestrator

chore: rename existing 'NetworkMonitorAgent' to 'NodeStressTester'

make sure to use canonical ips within the noise config

fixed contract tests

cargo fmt

additional comments and unit tests

contract and nym-node support of NM agents being run on the same host

basic unit tests

refactoring

make agents retrieve mix port assignment from the orchestrator

provide sensible defaults to CLI arguments

stub the initial structure for the agent

chore: remove redundant import

missed tick behaviour

removed redundant mutex

removed redundant try_get_client

reuse existing constant for default nymnode port

add node refresher for periodic scraping of bonded nym-node details

- NodeRefresher periodically queries the mixnet contract for all bonded
  nodes and probes each node's HTTP API for host information, sphinx keys,
  noise keys, and key rotation IDs
- Extract NymNodeApiClientRetriever into nym-node-requests with port
  probing, identity verification, and host information signature checking
- Add clone_query_client on NyxdClient so the refresher can hold its own
  query client without locking the signing client
- Batch upsert for nym_node rows (single transaction instead of per-row)
- Reuse the new helpers in nym-api's node_describe_cache

ensure assignment of testrun begins an IMMEDIATE tx

construction of the orchestrator struct

initial set of cli args

make sure to not assign testable nodes too often

very initial database structure and cli

fixed construction of RoutableNetworkMonitors

remove redundant constructor for NoiseNode

forbid 0-nonsense config values

add type safety for test route construction

moved lioness and arrayref to workspace deps

fixed dockerfile build

always use canonical addresses in RoutableNetworkMonitors

fixed old contract formatting issues

removed redundant into() call

network monitor agent fixes

additional logs

config unit tests

more docs

standalone stress testing invocation

further refactoring and changes

refactor testing loop and return valid test result upon completion

initial sending/receiving test loop

generating reusable sphinx headers

additional structure for receiving ingress packets

initial scaffolding for NMv3 agent

added validation of x25519 noise key

removed unstable call to 'is_multiple_of'

remove calls to from_octets as they're unavailable in pre 1.91

additional docs/comments

propagating noise information about NM for mixnet routing

pass full socket address of the agent into the contract storage

feat: store noise keys alongside ip addresses within the contract

removed redundant comment

ensure NM packets can only go to NM

PR review comments

added additional docs

allow NM to replay packets + fix replay prometheus metrics

propagate information about nm agent to connection handler

updated nym-node config migration

feat: introduced nym-node websocket subscription for keeping updated list of NM agents

allow admin to also revoke monitor agents

remove agents upon orchestrator removal

fixed schema generation and regenerated the contract schema

removed rustc restriction on contracts-common

added client methods for interacting with the contract

added unit tests for contract methods

implemented logic of the network monitors contract

create initial structure for network monitors contract

start mix stress testing topic branch

* make nym-node default to the new blockstream rpc/ws node cluster

* reduced mixnet-client log severity

* set network monitors contract address for mainnet
2026-05-22 09:43:20 +01:00
..
2025-02-11 12:07:15 +01:00
2025-07-22 15:25:43 +02:00

Nym Node Status API

The Node Status API serves information about individual nym-nodes in the Mixnet, such as which role they are operating in, statistics about them, services such as Network Requesters, as well as summaries of the state of the Mixnet.

We recommend that developers building applications such as explorers or analytics interfaces about the Mixnet run their own instance of the API, in order to promote a robust network of downstream services, and spread the load of API calls amongst as many endpoints as possible.

You can find build and operation instructions in the docs.

Database Support

The Node Status API supports both SQLite and PostgreSQL databases through Cargo feature flags:

  • SQLite (default): Lightweight, file-based database suitable for development and small deployments
  • PostgreSQL: Full-featured database recommended for production deployments

Building with Different Database Backends

# Build with SQLite (default)
cargo build --features sqlite --no-default-features

# Build with PostgreSQL
cargo build --features pg --no-default-features

Running Tests

# Test with SQLite
cargo test --features sqlite --no-default-features

# Test with PostgreSQL
make test-db  # This sets up a test PostgreSQL instance

Development Commands

The project includes a Makefile with helpful commands for both database backends:

# Check code compilation
make check-sqlite     # Check with SQLite
make check-pg        # Check with PostgreSQL

# Run clippy linter
make clippy-sqlite   # Lint with SQLite
make clippy-pg      # Lint with PostgreSQL
make clippy         # Run both

# PostgreSQL development
make dev-db         # Start a PostgreSQL instance for development
make prepare-pg     # Prepare SQLx offline cache for PostgreSQL

Implementation Details

The database abstraction is implemented using a query wrapper that automatically converts SQLite-style ? placeholders to PostgreSQL-style $1, $2, ... placeholders at runtime. This allows writing queries once using SQLite syntax while maintaining compatibility with both databases.

Key differences handled:

  • Placeholder syntax (? vs $1, $2, ...)
  • Type conversions (SQLite uses i64, PostgreSQL uses i32 for many fields)
  • SQL dialect differences (e.g., INSERT OR IGNORE vs ON CONFLICT DO NOTHING)
  • RETURNING clause behavior

For more details on PostgreSQL setup, see README_PG.md.