Logging

NeoPRISM uses structured logging to help you diagnose issues and monitor node activity. Logging is powered by the tracing crate, and log verbosity is controlled via the standard RUST_LOG environment variable. By default, NeoPRISM outputs all logs to stdout.

Configuring Logging

To set the log level, set the RUST_LOG environment variable before starting NeoPRISM. For example:

RUST_LOG=info

Supported log levels (in increasing verbosity) are: error, warn, info, debug, and trace.

You can also filter logs by module. For example, to see only HTTP-related logs at debug level:

RUST_LOG=neoprism_node::http=debug

Multiple filters can be combined:

RUST_LOG=info,oura=warn,neoprism_node::http=trace,tower_http::trace=debug

About RUST_LOG

NeoPRISM uses the standard tracing environment variables to control log verbosity and filtering, including RUST_LOG. For more details on how RUST_LOG works and advanced usage, see the tracing-subscriber EnvFilter documentation.