Module tracing

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Available on crate feature tracing only.

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Tracing utilities.

This module contains application tracing utilities built on top of the tracing and opentelemetry libraries. The key exports are:

The configure function, which configures the tracing and opentelemetry crates with sensible defaults and should be called during initialization of every Materialize binary.
The OpenTelemetryContext type, which carries a tracing span across thread or task boundaries within a process.

Structs§

MetricsLayer 🔒
OpenTelemetryConfig: Configuration for the opentelemetry library.
OpenTelemetryContext: An OpenTelemetry context.
PrefixFormat: A wrapper around a FormatEvent that adds an optional prefix to each event.
SentryConfig: Configures Sentry reporting.
StderrLogConfig: Configures the stderr log.
TokioConsoleConfigtokio-console: Configuration of the Tokio console integration.
TracingConfig: Application tracing configuration.
TracingGuard: A guard for the tracing infrastructure configured with configure.
TracingHandle: A handle to the tracing infrastructure configured with configure.

LOGGING_DEFAULTS_STR: By default we turn off tracing from the following crates, because they have error spans which are noisy.
OPENTELEMETRY_DEFAULTS_STR: By default we turn off tracing from the following crates, because they have long-lived Spans, which OpenTelemetry does not handle well.
SENTRY_DEFAULTS_STR: By default we turn off tracing from the following crates, because they have error spans which are noisy.

GLOBAL_SUBSCRIBER: An Arc of the tracing Subscriber constructed and initialized in configure. The value is written when configure runs.
LOGGING_DEFAULTS: Same as LOGGING_DEFAULTS_STR, but structured as Directives.
OPENTELEMETRY_DEFAULTS: Same as OPENTELEMETRY_DEFAULTS_STR, but structured as Directives.
SENTRY_DEFAULTS: Same as SENTRY_DEFAULTS_STR, but structured as Directives.

configure: Enables application tracing via the tracing and opentelemetry libraries.
crate_level: Returns the Level of a crate from an EnvFilter by performing an exact match between crate and the original EnvFilter directive.