chore(deps): update opentelemetry to 0.30.0

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
opentelemetry (source)	dependencies	minor	0.23.0 -> 0.30.0
opentelemetry-otlp (source)	dependencies	minor	0.16.0 -> 0.30.0
opentelemetry-stdout (source)	dependencies	minor	0.4.0 -> 0.30.0
opentelemetry_sdk (source)	dependencies	minor	0.23.0 -> 0.30.0
tracing-opentelemetry	dependencies	minor	0.24.0 -> 0.30.0

---

Release Notes

open-telemetry/opentelemetry-rust (opentelemetry)

v0.30.0

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Released 2025-May-23

#​2821 Context
based suppression capabilities added: Added the ability to prevent recursive
telemetry generation through new context-based suppression mechanisms. This
feature helps prevent feedback loops and excessive telemetry when OpenTelemetry
components perform their own operations.

New methods added to Context:

• is_telemetry_suppressed() - Checks if telemetry is suppressed in this
  context
• with_telemetry_suppressed() - Creates a new context with telemetry
  suppression enabled
• is_current_telemetry_suppressed() - Efficiently checks if the current thread's context
  has telemetry suppressed
• enter_telemetry_suppressed_scope() - Convenience method to enter a scope where telemetry is
  suppressed

These methods allow SDK components, exporters, and processors to temporarily
disable telemetry generation during their internal operations, ensuring more
predictable and efficient observability pipelines.

• re-export tracing for internal-logs feature to remove the need of adding tracing as a dependency

v0.29.1

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Release 2025-Apr-01

• Bug Fix: Re-export WithContext at opentelemetry::trace::context::WithContext #​2879 to restore backwards compatability
  • The new path for WithContext and FutureExt are in opentelemetry::context as they are independent of the trace signal. Users should prefer this path.

v0.29.0

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Released 2025-Mar-21

• Breaking Moved ExportError trait from opentelemetry::trace::ExportError to opentelemetry_sdk::export::ExportError
• Breaking Moved TraceError enum from opentelemetry::trace::TraceError to opentelemetry_sdk::trace::TraceError
• Breaking Moved TraceResult type alias from opentelemetry::trace::TraceResult to opentelemetry_sdk::trace::TraceResult
• Bug Fix: InstrumentationScope implementation for PartialEq and Hash fixed to include Attributes also.
• Breaking changes for baggage users: #​2717
  • Changed value type of Baggage from Value to StringValue
  • Updated Baggage constants to reflect latest standard (MAX_KEY_VALUE_PAIRS - 180 -> 64, MAX_BYTES_FOR_ONE_PAIR - removed) and increased insert performance see #2284.
  • Align Baggage.remove() signature with .get() to take the key as a reference
  • Baggage can't be retrieved from the Context directly anymore and needs to be accessed via context.baggage()
  • with_baggage() and current_with_baggage() override any existing Baggage in the Context
  • Baggage keys can't be empty and only allow ASCII visual chars, except "(),/:;<=>?@&#8203;[\]{} (see RFC7230, Section 3.2.6)
  • KeyValueMetadata does not publicly expose its fields. This should be transparent change to the users.
• Changed Context to use a stack to properly handle out of order dropping of ContextGuard. This imposes a limit of 65535 nested contexts on a single thread. See #2378 and #1887.
• Added additional name: Option<&str> parameter to the event_enabled method
  on the Logger trait. This allows implementations (SDK, processor, exporters)
  to leverage this additional information to determine if an event is enabled.

v0.28.0

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Released 2025-Feb-10

• Bump msrv to 1.75.0.
• Breaking opentelemetry::global::shutdown_tracer_provider() Removed from this crate, should now use tracer_provider.shutdown() see #​2369 for a migration example.
• Breaking Removed unused opentelemetry::PropagationError struct.

v0.27.1

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Released 2024-Nov-27

v0.27.0

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Released 2024-Nov-11

• Bump MSRV to 1.70 #​2179
• Add LogRecord::set_trace_context; an optional method conditional on the trace feature for setting trace context on a log record.
• Removed unnecessary public methods named as_any from AsyncInstrument trait and the implementing instruments: ObservableCounter, ObservableGauge, and ObservableUpDownCounter #​2187
• Introduced SyncInstrument trait to replace the individual synchronous instrument traits (SyncCounter, SyncGauge, SyncHistogram, SyncUpDownCounter) which are meant for SDK implementation. #​2207
• Ensured that observe method on asynchronous instruments can only be called inside a callback. This was done by removing the implementation of AsyncInstrument trait for each of the asynchronous instruments. #​2210
• Removed PartialOrd and Ord implementations for KeyValue. #​2215
• Breaking change for exporter authors: Marked KeyValue related structs and enums as non_exhaustive. #​2228
• Breaking change for log exporter authors: Marked AnyValue enum as non_exhaustive. #​2230
• Breaking change for Metrics users: The init method used to create instruments has been renamed to build. Also, try_init() method is removed from instrument builders. The return types of InstrumentProvider trait methods modified to return the instrument struct, instead of Result. #​2227

Before:

let counter = meter.u64_counter("my_counter").init();

Now:

let counter = meter.u64_counter("my_counter").build();

• Breaking change: #​2220

  • Removed deprecated method InstrumentationLibrary::new
  • Renamed InstrumentationLibrary to InstrumentationScope
  • Renamed InstrumentationLibraryBuilder to InstrumentationScopeBuilder
  • Removed deprecated methods LoggerProvider::versioned_logger and TracerProvider::versioned_tracer
  • Removed methods LoggerProvider::logger_builder, TracerProvider::tracer_builder and MeterProvider::versioned_meter
  • Replaced these methods with LoggerProvider::logger_with_scope, TracerProvider::logger_with_scope, MeterProvider::meter_with_scope
  • Replaced global::meter_with_version with global::meter_with_scope
  • Added global::tracer_with_scope
  • Refer to PR description for migration guide.

• Breaking change: replaced InstrumentationScope public attributes by getters #​2275

• Breaking change: #​2260

  • Removed global::set_error_handler and global::handle_error.
  • global::handle_error usage inside the opentelemetry crates has been replaced with global::otel_info, otel_warn, otel_debug and otel_error macros based on the severity of the internal logs.
  • The default behavior of global::handle_error was to log the error using eprintln!. With otel macros, the internal logs get emitted via tracing macros of matching severity. Users now need to configure a tracing layer/subscriber to capture these logs.
  • Refer to PR description for migration guide. Also refer to self-diagnostics example to learn how to view internal logs in stdout using tracing::fmt layer.

• Breaking change for exporter/processor authors: #​2266

  • Moved ExportError trait from opentelemetry::ExportError to opentelemetry_sdk::export::ExportError
  • Created new trait opentelemetry::trace::ExportError for trace API. This would be eventually be consolidated with ExportError in the SDK.
  • Moved LogError enum from opentelemetry::logs::LogError to opentelemetry_sdk::logs::LogError
  • Moved LogResult type alias from opentelemetry::logs::LogResult to opentelemetry_sdk::logs::LogResult
  • Moved MetricError enum from opentelemetry::metrics::MetricError to opentelemetry_sdk::metrics::MetricError
  • Moved MetricResult type alias from opentelemetry::metrics::MetricResult to opentelemetry_sdk::metrics::MetricResult
    These changes shouldn't directly affect the users of OpenTelemetry crate, as these constructs are used in SDK and Exporters. If you are an author of an sdk component/plug-in, like an exporter etc. please use these types from sdk. Refer CHANGELOG.md for more details, under same version section.

• Breaking 2291 Rename logs_level_enabled flag to spec_unstable_logs_enabled. Please enable this updated flag if the feature is needed. This flag will be removed once the feature is stabilized in the specifications.

v0.26.0

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Released 2024-Sep-30

• BREAKING Public API changes:

  • Removed: Key.bool(), Key.i64(), Key.f64(), Key.string(), Key.array() #​2090. These APIs were redundant as they didn't offer any additional functionality. The existing KeyValue::new() API covers all the scenarios offered by these APIs.

  • Removed: ObjectSafeMeterProvider and GlobalMeterProvider #​2112. These APIs were unnecessary and were mainly meant for internal use.

  • Modified: MeterProvider.meter() and MeterProvider.versioned_meter() argument types have been updated to &'static str instead of impl Into<Cow<'static, str>>> #​2112. These APIs were modified to enforce the Meter name, version, and schema_url to be &'static str.

  • Renamed: NoopMeterCore to NoopMeter

• Added with_boundaries API to allow users to provide custom bounds for Histogram instruments. #​2135

v0.25.0

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• BREAKING #​1993 Box complex types in AnyValue enum
  Before:

#[derive(Debug, Clone, PartialEq)]
pub enum AnyValue {
    /// An integer value
    Int(i64),
    /// A double value
    Double(f64),
    /// A string value
    String(StringValue),
    /// A boolean value
    Boolean(bool),
    /// A byte array
    Bytes(Vec<u8>),
    /// An array of `Any` values
    ListAny(Vec<AnyValue>),
    /// A map of string keys to `Any` values, arbitrarily nested.
    Map(HashMap<Key, AnyValue>),
}

After:

#[derive(Debug, Clone, PartialEq)]
pub enum AnyValue {
    /// An integer value
    Int(i64),
    /// A double value
    Double(f64),
    /// A string value
    String(StringValue),
    /// A boolean value
    Boolean(bool),
    /// A byte array
    Bytes(Box<Vec<u8>>),
    /// An array of `Any` values
    ListAny(Box<Vec<AnyValue>>),
    /// A map of string keys to `Any` values, arbitrarily nested.
    Map(Box<HashMap<Key, AnyValue>>),
}

So the custom log appenders should box these types while adding them in message body, or
attribute values. Similarly, the custom exporters should dereference these complex type values
before serializing.

Breaking :
#​2015 Removed
the ability to register callbacks for Observable instruments on Meter directly.
If you were using meter.register_callback to provide the callback, provide
them using with_callback method, while creating the Observable instrument
itself.
1715
shows the exact changes needed to make this migration. If you are starting new,
refer to the
examples
to learn how to provide Observable callbacks.

v0.24.0

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• Add "metrics", "logs" to default features. With this, default feature list is
  "trace", "metrics" and "logs".

• When "metrics" feature is enabled, KeyValue implements PartialEq, Eq,
  PartialOrder, Order, Hash. This is meant to be used for metrics
  aggregation purposes only.

• Removed Unit struct for specifying Instrument units. Unit is treated as an
  opaque string. Migration: Replace .with_unit(Unit::new("myunit")) with
  .with_unit("myunit").

• 1869 Introduced the LogRecord::set_target() method in the log bridge API.
  This method allows appenders to set the target/component emitting the logs.

open-telemetry/opentelemetry-rust (opentelemetry-otlp)

v0.30.0

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Released 2025-May-23

• Update opentelemetry dependency version to 0.30
• Update opentelemetry_sdk dependency version to 0.30
• Update opentelemetry-http dependency version to 0.30
• Update opentelemetry-proto dependency version to 0.30
• Update tonic dependency version to 0.13
• Re-export tonic types under tonic_types
  2898
• Publicly re-exported MetricExporterBuilder, SpanExporterBuilder, and
  LogExporterBuilder types, enabling users to directly reference and use these
  builder types for metrics, traces, and logs exporters.
  2966

v0.29.0

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Released 2025-Mar-21

• Update opentelemetry dependency version to 0.29

• Update opentelemetry_sdk dependency version to 0.29

• Update opentelemetry-http dependency version to 0.29

• Update opentelemetry-proto dependency version to 0.29

• The OTEL_EXPORTER_OTLP_TIMEOUT, OTEL_EXPORTER_OTLP_TRACES_TIMEOUT, OTEL_EXPORTER_OTLP_METRICS_TIMEOUT and OTEL_EXPORTER_OTLP_LOGS_TIMEOUT are changed from seconds to miliseconds.

• Fixed .with_headers() in HttpExporterBuilder to correctly support multiple key/value pairs. #​2699

• Fixed
  #​2770
  partially to properly handle shutdown() when using http. (tonic still
  does not do proper shutdown)

• Breaking
  ExporterBuilder's build() method now Result with ExporterBuildError being the
  Error variant. Previously it returned signal specific errors like LogError
  from the opentelemetry_sdk, which are no longer part of the sdk. No changes
  required if you were using unwrap/expect. If you were matching on the returning
  Error enum, replace with the enum ExporterBuildError. Unlike the previous
  Error which contained many variants unrelated to building an exporter, the
  new one returns specific variants applicable to building an exporter. Some
  variants might be applicable only on select features.
  Also, now unused Error enum is removed.

• Breaking ExportConfig's timeout field is now optional(Option<Duration>)

• Breaking Export configuration done via code is final. ENV variables cannot be used to override the code config.
  Do not use code based config, if there is desire to control the settings via ENV variables.
  List of ENV variables and corresponding setting being affected by this change.

  • OTEL_EXPORTER_OTLP_ENDPOINT -> ExportConfig.endpoint
  • OTEL_EXPORTER_OTLP_TIMEOUT -> ExportConfig.timeout

v0.28.0

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Released 2025-Feb-10

• Update opentelemetry dependency version to 0.28.
• Update opentelemetry_sdk dependency version to 0.28.
• Update opentelemetry-http dependency version to 0.28.
• Update opentelemetry-proto dependency version to 0.28.
• Bump msrv to 1.75.0.
• Feature flag "populate-logs-event-name" is removed as no longer relevant.
  LogRecord's event_name() is now automatically populated on the newly added
  "event_name" field in LogRecord proto definition.
• Remove "grpc-tonic" feature from default, and instead add "http-proto" and
  "reqwest-blocking-client" features as default, to align with the
  specification.
  2516
• Remove unnecessarily public trait opentelemetry_otlp::metrics::MetricsClient
  and MetricExporter::new(..) method. Use
  MetricExporter::builder()...build() to obtain MetricExporter.
• The HTTP clients (reqwest, reqwest-blocking, hyper) now support the
  export timeout interval configured in below order
  • Signal specific env variable OTEL_EXPORTER_OTLP_TRACES_TIMEOUT,
    OTEL_EXPORTER_OTLP_LOGS_TIMEOUT or OTEL_EXPORTER_OTLP_TIMEOUT.
  • OTEL_EXPORTER_OTLP_TIMEOUT env variable.
  • with_http().with_timeout() API method of
    LogExporterBuilder and SpanExporterBuilder and MetricsExporterBuilder.
  • The default interval of 10 seconds is used if none is configured.

v0.27.0

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Released 2024-Nov-11

• Update opentelemetry dependency version to 0.27

• Update opentelemetry_sdk dependency version to 0.27

• Update opentelemetry-http dependency version to 0.27

• Update opentelemetry-proto dependency version to 0.27

• BREAKING:

  • (#​2217) Replaced: The MetricsExporterBuilder interface is modified from with_temporality_selector to with_temporality example can be seen below:
    Previous Signature:

    MetricsExporterBuilder::default().with_temporality_selector(DeltaTemporalitySelector::new())

    Updated Signature:

    MetricsExporterBuilder::default().with_temporality(opentelemetry_sdk::metrics::Temporality::Delta)

  • (#​2221) Replaced:

    • The opentelemetry_otlp::new_pipeline().{trace,logging,metrics}() interface is now replaced with {TracerProvider,SdkMeterProvider,LoggerProvider}::builder().
    • The opentelemetry_otlp::new_exporter() interface is now replaced with {SpanExporter,MetricsExporter,LogExporter}::builder().

    Pull request #​2221 has a detailed migration guide in the description. See example below,
    and basic-otlp for more details:

    Previous Signature:

    let logger_provider: LoggerProvider = opentelemetry_otlp::new_pipeline()
      .logging()
      .with_resource(RESOURCE.clone())
      .with_exporter(
          opentelemetry_otlp::new_exporter()
              .tonic()
              .with_endpoint("http://localhost:4317")
      )
      .install_batch(runtime::Tokio)?;

    Updated Signature:

    let exporter = LogExporter::builder()
        .with_tonic()
        .with_endpoint("http://localhost:4317")
        .build()?;
    
    Ok(LoggerProvider::builder()
        .with_resource(RESOURCE.clone())
        .with_batch_exporter(exporter, runtime::Tokio)
        .build())

  • Renamed

    • (#​2255): de-pluralize Metric types.
      • MetricsExporter -> MetricExporter
      • MetricsExporterBuilder -> MetricExporterBuilder

  • #​2263
    Support hyper client for opentelemetry-otlp. This can be enabled using flag hyper-client.
    Refer example: https://github.com/open-telemetry/opentelemetry-rust/tree/main/opentelemetry-otlp/examples/basic-otlp-http

v0.26.0

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Released 2024-Sep-30

• Update opentelemetry dependency version to 0.26
• Update opentelemetry_sdk dependency version to 0.26
• Update opentelemetry-http dependency version to 0.26
• Update opentelemetry-proto dependency version to 0.26
• Bump MSRV to 1.71.1 2140

v0.25.0

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• Update opentelemetry dependency version to 0.25
• Update opentelemetry_sdk dependency version to 0.25
• Update opentelemetry-http dependency version to 0.25
• Update opentelemetry-proto dependency version to 0.25
• Starting with this version, this crate will align with opentelemetry crate
  on major,minor versions.
• Breaking
  The logrecord event-name is added as an attribute only if the feature flag
  populate-logs-event-name is enabled. The name of the attribute is changed from
  "name" to "event.name".
  1994,
  2050

v0.17.0

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• Add "metrics", "logs" to default features. With this, default feature list is
  "trace", "metrics" and "logs".
• Breaking OtlpMetricPipeline.build() no longer invoke the
  global::set_meter_provider. User who setup the pipeline must do it
  themselves using global::set_meter_provider(meter_provider.clone());.
• Add with_resource on OtlpLogPipeline, replacing the with_config method.
  Instead of using
  .with_config(Config::default().with_resource(RESOURCE::default())) users must
  now use .with_resource(RESOURCE::default()) to configure Resource when using
  OtlpLogPipeline.
• Breaking The methods OtlpTracePipeline::install_simple() and OtlpTracePipeline::install_batch() would now return TracerProvider instead of Tracer.
  These methods would also no longer set the global tracer provider. It would now be the responsibility of users to set it by calling global::set_tracer_provider(tracer_provider.clone());. Refer to the basic-otlp and basic-otlp-http examples on how to initialize OTLP Trace Exporter.
• Breaking Correct the misspelling of "webkpi" to "webpki" in features #​1842
• Bump MSRV to 1.70 #​1840
• Fixing the OTLP HTTP/JSON exporter. #​1882 - The exporter was broken in the
  previous release.
• Breaking 1869 The OTLP logs exporter now overrides the InstrumentationScope::name field with the target from LogRecord, if target is populated.
• Groups batch of LogRecord and Span by their resource and instrumentation scope before exporting, for better efficiency #​1873.
• Breaking Update to http v1 and tonic v0.12 #​1674
• Update opentelemetry dependency version to 0.24
• Update opentelemetry_sdk dependency version to 0.24
• Update opentelemetry-http dependency version to 0.13
• Update opentelemetry-proto dependency version to 0.7

open-telemetry/opentelemetry-rust (opentelemetry-stdout)

v0.30.0

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Released 2025-May-23

• Updated opentelemetry dependency to version 0.30.0.
• Updated opentelemetry_sdk dependency to version 0.30.0.

v0.29.0

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Released 2025-Mar-21

• Update opentelemetry dependency version to 0.29.
• Update opentelemetry_sdk dependency version to 0.29.

v0.28.0

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Released 2025-Feb-10

• Update opentelemetry dependency version to 0.28.
• Update opentelemetry_sdk dependency version to 0.28.
• Bump msrv to 1.75.0.
• Breaking time fields, StartTime and EndTime is printed on aggregation (Sum, Gauge, Histogram, ExpoHistogram) with 2 tabs, previously it was on aggregation data point, with 3 tabs, see #​2377 and #​2411.
• Removed unused dependency on ordered-float.
• Feature flag "populate-logs-event-name" is removed as no longer relevant.
  LogRecord's event_name() is now automatically displayed.

v0.27.0

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Released 2024-Nov-11

• Update opentelemetry dependency version to 0.27

• Update opentelemetry_sdk dependency version to 0.27

• Bump MSRV to 1.70 #​2179

• BREAKING

  • Replaced
    • (#​2217): The MetricsExporterBuilder interface is modified from with_temporality_selector to with_temporality example can be seen below:
      Previous Signature:

    MetricsExporterBuilder::default().with_temporality_selector(DeltaTemporalitySelector::new())

    Updated Signature:

    MetricsExporterBuilder::default().with_temporality(opentelemetry_sdk::metrics::Temporality::Delta)

  • Renamed
    • (#​2255): de-pluralize Metric types.
      • MetricsExporter -> MetricExporter
      • MetricsExporterBuilder -> MetricExporterBuilder

v0.26.0

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Released 2024-Sep-30

• Update opentelemetry dependency version to 0.26
• Update opentelemetry_sdk dependency version to 0.26

v0.25.0

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• Update opentelemetry dependency version to 0.25
• Update opentelemetry_sdk dependency version to 0.25
• Starting with this version, this crate will align with opentelemetry crate
  on major,minor versions.
• Breaking 1994 The logrecord event-name is added as attribute with
  key name only if the feature flag populate-logs-event-name is enabled.
• Breaking 2040 Simplified stdout exporter:
  • Now only supports writing to stdout, removing ability to send telemetry to other streams.
  • Output format improved for better human readability.
  • Note: This exporter is intended for learning and debugging purposes only. Not recommended for production use or automated parsing.

v0.5.0

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• Update opentelemetry dependency version to 0.24
• Update opentelemetry_sdk dependency version to 0.24

open-telemetry/opentelemetry-rust (opentelemetry_sdk)

v0.30.0

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Released 2025-May-23

• Updated opentelemetry and opentelemetry-http dependencies to version 0.30.0.

• It is now possible to add links to a Span via the SpanRef that you get from
  a Context. 2959

• Feature: Added context based telemetry suppression. #​2868

  • SdkLogger, SdkTracer modified to respect telemetry suppression based on
    Context. In other words, if the current context has telemetry suppression
    enabled, then logs/spans will be ignored.
  • The flag is typically set by OTel
    components to prevent telemetry from itself being fed back into OTel.
  • BatchLogProcessor, BatchSpanProcessor, and PeriodicReader modified to set
    the suppression flag in their dedicated thread, so that telemetry generated from
    those threads will not be fed back into OTel.
  • Similarly, SimpleLogProcessor
    also modified to suppress telemetry before invoking exporters.

• Feature: Implemented and enabled cardinality capping for Metrics by
  default. #​2901

  • The default cardinality limit is 2000 and can be customized using Views.
  • This feature was previously removed in version 0.28 due to the lack of
    configurability but has now been reintroduced with the ability to configure
    the limit.
  • Fixed the overflow attribute to correctly use the boolean value true
    instead of the string "true".
    #​2878

• The shutdown_with_timeout method is added to SpanProcessor, SpanExporter trait and TracerProvider.

• The shutdown_with_timeout method is added to LogExporter trait.

• The shutdown_with_timeout method is added to LogProvider and LogProcessor trait.

• Breaking MetricError, MetricResult no longer public (except when
  spec_unstable_metrics_views feature flag is enabled). OTelSdkResult should
  be used instead, wherever applicable. #​2906

• Breaking change, affecting custom MetricReader authors:

  • The
    shutdown_with_timeout method is added to MetricReader trait.
  • collect
    method on MetricReader modified to return OTelSdkResult.
    #​2905
  • MetricReader
    trait, ManualReader struct, Pipeline struct, InstrumentKind enum moved
    behind feature flag "experimental_metrics_custom_reader".
    #​2928

• Views improvements:

  • Core view functionality is now available by default—users can change the
    name, unit, description, and cardinality limit of a metric via views without
    enabling the spec_unstable_metrics_views feature flag. Advanced view
    features, such as custom aggregation or attribute filtering, still require
    the spec_unstable_metrics_views feature.
  • Removed new_view() method and View trait. Views can now be added by passing
    a function with signature Fn(&Instrument) -> Option<Stream> to the with_view
    method on MeterProviderBuilder.

• Introduced a builder pattern for Stream creation to use with views:

  • Added StreamBuilder struct with methods to configure stream properties
  • Added Stream::builder() method that returns a new StreamBuilder
  • StreamBuilder::build() returns Result<Stream, Box<dyn Error>> enabling
    proper validation.

Example of using views to rename a metric:

let view_rename = |i: &Instrument| {
    if i.name() == "my_histogram" {
        Some(
            Stream::builder()
                .with_name("my_histogram_renamed")
                .build()
                .unwrap(),
        )
    } else {
        None
    }
};

let provider = SdkMeterProvider::builder()
    // add exporters, set resource etc.
    .with_view(view_rename)
    .build();

• Breaking Aggregation enum moved behind feature flag
  "spec_unstable_metrics_views". This was only required when using advanced view
  capabilities.
  #​2928
• Breaking change, affecting custom PushMetricExporter authors:
  • The export method on PushMetricExporter now accepts &ResourceMetrics
    instead of &mut ResourceMetrics.
  • ResourceMetrics no longer exposes scope_metrics field, but instead
    offers scope_metrics() method that returns an iterator over the same.
  • ScopeMetrics no longer exposes metrics field, but instead offers
    metrics() method that returns an iterator over the same.
  • Sum, Gauge, Histogram & ExponentialHistogram no longer exposes
    data_points field, but instead offers data_points() method that returns
    an iterator over the same.
  • SumDataPoint, GaugeDataPoint, HistogramDataPoint &
    ExponentialHistogramDataPoint no longer exposes attributes, exemplars
    field, but instead offers attributes(), and exemplars() method that
    returns an iterator over the same.
  • Exemplar no longer exposes filtered_attributes field, but instead
    offers filtered_attributes() method that returns an iterator over
    the same.
  • HistogramDataPoint no longer exposes bounds and bucket_counts, but
    instead offers bounds() and bucket_counts() methods that returns an
    iterator over the same.
  • Metric no longer exposes name, description, unit, data fields, but
    instead offers name(), description(), unit(), and data() accessor methods.
  • ResourceMetrics no longer exposes resource field, but instead offers
    a resource() accessor method.
  • ScopeMetrics no longer exposes scope field, but instead offers
    a scope() accessor method.

v0.29.0

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Released 2025-Mar-21

• Update opentelemetry dependency to 0.29.
• Update opentelemetry-http dependency to 0.29.
• Breaking: The Runtime trait has been simplified and refined. See the #​2641
  for the changes.
• Removed async-std support for Runtime, as async-std crate is deprecated.
• Calls to MeterProviderBuilder::with_resource, TracerProviderBuilder::with_resource,
  LoggerProviderBuilder::with_resource are now additive (#​2677).
• Moved ExportError trait from opentelemetry::trace::ExportError to opentelemetry_sdk::export::ExportError
• Moved TraceError enum from opentelemetry::trace::TraceError to opentelemetry_sdk::trace::TraceError
• Moved TraceResult type alias from opentelemetry::trace::TraceResult to opentelemetry_sdk::trace::TraceResult
• Breaking: Make force_flush() in PushMetricExporter synchronous
• Breaking: Updated the SpanExporter trait method signature:

  fn export(&mut self, batch: Vec<SpanData>) -> BoxFuture<'static, OTelSdkResult>;

to

  fn export(
    &mut self,
    batch: Vec<SpanData>,
) -> impl std::future::Future<Output = OTelSdkResult> + Send;

This affects anyone who writes custom exporters, as custom implementations of SpanExporter
should now define export as an async fn:

  impl trace::SpanExporter for CustomExporter {
    async fn export(&mut self, batch: Vec<trace::SpanData>) -> OTelSdkResult {
        // Implementation here
    }
}

• Breaking The SpanExporter::export() method no longer requires a mutable reference to self.
  Before:

    async fn export(&mut self, batch: Vec<SpanData>) -> OTelSdkResult

  After:

    async fn export(&self, batch: Vec<SpanData>) -> OTelSdkResult

  Custom exporters will need to internally synchronize any mutable state, if applicable.

• Breaking The shutdown_with_timeout method is added to MetricExporter trait. This is breaking change for custom MetricExporter authors.

• Bug Fix: BatchLogProcessor now correctly calls shutdown on the exporter
  when its shutdown is invoked.

• Reduced some info level logs to debug

• Breaking for custom LogProcessor/Exporter authors: Changed name
  parameter from &str to Option<&str> in event_enabled method on the
  LogProcessor and LogExporter traits. SdkLogger no longer passes its
  scope name but instead passes the incoming name when invoking
  event_enabled on processors.

• Breaking for custom LogExporter authors: shutdown() method in
  LogExporter trait no longer requires a mutable ref to self. If the exporter
  needs to mutate state, it should rely on interior mutability.
  2764

• Breaking (Affects custom Exporter/Processor authors only) Removed
  opentelelemetry_sdk::logs::error::{LogError, LogResult}. These were not
  intended to be public. If you are authoring custom processor/exporters, use
  opentelemetry_sdk::error::OTelSdkError and
  opentelemetry_sdk::error::OTelSdkResult.
  2790

• Breaking for custom LogProcessor authors: Changed set_resource
  to require mutable ref.
  fn set_resource(&mut self, _resource: &Resource) {}

• Breaking: InMemoryExporter's return type change.

  • TraceResult<Vec<SpanData>> to Result<Vec<SpanData>, InMemoryExporterError>
  • MetricResult<Vec<ResourceMetrics>> to Result<Vec<ResourceMetrics>, InMemoryExporterError>
  • LogResult<Vec<LogDataWithResource>> to Result<Vec<LogDataWithResource>, InMemoryExporterError>

v0.28.0

Compare Source

Released 2025-Feb-10

Note: Due to the large amount of making changes, check migration guide to
0.28 for a summary that can help majority users to
quickly migrate. The changelog below is the full list of changes.

• Update opentelemetry dependency to 0.28.

• Update opentelemetry-http dependency to 0.28.

• Bump msrv to 1.75.0.

• Bug fix: For cumulative temporality, ObservableGauge no longer export
  MetricPoints unless measurements were newly reported (in Observable callbacks)
  since last export. This bug fixes ensures ObservableGauge behaves as per OTel
  Spec. The bug is not addressed for other Observable instruments
  #​2213

• Upgrade the tracing crate used for internal logging to version 0.1.40 or
  later. This is necessary because the internal logging macros utilize the name
  field as metadata, a feature introduced in version 0.1.40.
  #​2418

• Feature: Introduced a new feature flag,
  experimental_metrics_disable_name_validation, which disables entire
  Instrument Name Validation. This is an experimental feature to unblock use
  cases requiring currently disallowed characters (eg: Windows Perf Counters).
  Use caution when enabling this feature as this breaks guarantees about metric
  name.

• Bug fix: Empty Tracer names are retained as-is instead of replacing with
  "rust.opentelemetry.io/sdk/tracer"
  #​2486

• Update EnvResourceDetector to allow resource attribute values containing
  equal signs ("=").
  #​2120

• ResourceDetector.detect() no longer supports timeout option.

• Breaking Resource.get() modified to require reference to Key instead of
  owned. Replace get(Key::from_static_str("key")) with
  get(&Key::from_static_str("key"))

• Feature: Add ResourceBuilder for an easy way to create new Resources

• Breaking: Remove

• Resource::{new,empty,from_detectors,new_with_defaults,from_schema_url,merge,default}.
  To create Resources you should only use Resource::builder() or Resource::builder_empty(). See
  #​2322 for a migration guide.

  Example Usage:

  // old
  Resource::default().with_attributes([
      KeyValue::new("service.name", "test_service"),
      KeyValue::new("key", "value"),
  ]);
  
  // new
  Resource::builder()
      .with_service_name("test_service")
      .with_attribute(KeyValue::new("key", "value"))
      .build();

• Breaking :
  #​2314

  • The LogRecord struct has been updated:
    • All fields are now pub(crate) instead of pub.
    • Getter methods have been introduced to access field values. This change
      impacts custom exporter and processor developers by requiring updates to
      code that directly accessed LogRecord fields. They must now use the provided
      getter methods (e.g., log_record.event_name() instead of
      log_record.event_name).

• Breaking (Affects custom metric exporter authors only) start_time and
  time is moved from DataPoints to aggregations (Sum, Gauge, Histogram,
  ExpoHistogram) see
  #​2377 and
  #​2411, to
  reduce memory.

• Breaking start_time is no longer optional for Sum aggregation, see
  #​2367, but
  is still optional for Gauge aggregation see
  #​2389.

• SimpleLogProcessor modified to be generic over LogExporter to avoid
  dynamic dispatch to invoke exporter. If you were using
  with_simple_exporter to add LogExporter with SimpleLogProcessor, this is
  a transparent change.
  #​2338

• Breaking opentelemetry::global::shutdown_tracer_provider() removed from the API,
  should now use tracer_provider.shutdown() see
  #​2369 for
  a migration example. "Tracer provider" is cheaply clonable, so users are
  encouraged to set a clone of it as the global (ex:
  global::set_tracer_provider(provider.clone())), so that instrumentations
  and other components can obtain tracers from global::tracer(). The
  tracer_provider must be kept around to call shutdown on it at the end of
  application (ex: tracer_provider.shutdown())

• Breaking The LogExporter::export() method no longer requires a mutable
  reference to self.: Before: async fn export(&mut self, _batch: LogBatch<'_>) -> LogResult<()> After: async fn export(&self, _batch: LogBatch<'_>) -> LogResult<()> Custom exporters will need to internally synchronize any
  mutable state, if applicable.

• Breaking Removed the following deprecated struct:

  • logs::LogData - Previously deprecated in version 0.27.1 Migration Guidance:
    This structure is no longer utilized within the SDK, and users should not have
    dependencies on it.

• Breaking Removed the following deprecated methods:

  • Logger::provider() : Previously deprecated in version 0.27.1
  • Logger::instrumentation_scope() : Previously deprecated in version 0.27.1.
    Migration Guidance: - These methods were intended for log appender authors.
    Keep the clone of the provider handle, instead of depending on above
    methods.

• Rename opentelemetry_sdk::logs::Builder to
  opentelemetry_sdk::logs::LoggerProviderBuilder.

• Rename opentelemetry_sdk::trace::Builder to
  opentelemetry_sdk::trace::SdkTracerProviderBuilder.

• Redesigned PeriodicReader, BatchSpanProcessor, BatchLogProcessor to no longer
  require an async runtime. They create its own background thread instead. When
  pairing with OTLP, grpc-tonic or reqwest-blocking-client are the only
  supported features (hyper, reqwest are not supported) These are now
  enabled by default and can be migrated to by removing the extra rt:Runtime
  argument as shown below.

  • PeriodicReader::builder(exporter,runtime::Tokio).build(); to
    PeriodicReader::builder(exporter).build();
  • .with_batch_exporter(exporter, runtime::Tokio) to
    .with_batch_exporter(exporter)

  The new implementation has following limitations:

  • Does not work if your application cannot spawn new Thread.
  • Does not support hyper, reqwest HTTP Clients
  • Does not support multiple concurrent exports (with_max_concurrent_exports
    is not supported). This existed only for traces.

  If this applies to you, you can get the old behavior back by following steps
  below:

  • Enable one or more of the feature flag from below
    experimental_metrics_periodicreader_with_async_runtime
experimental_logs_batch_log_processor_with_async_runtime
experimental_trace_batch_span_processor_with_async_runtime
  • Use updated namespace; i.e
    periodic_reader_with_async_runtime::PeriodicReader,
    log_processor_with_async_runtime::BatchLogProcessor and
    span_processor_with_async_runtime::BatchSpanProcessor
  • Continue using existing features flags rt-tokio,
    rt-tokio-current-thread, or rt-async-std.

  As part of the above redesign of PeriodicReader and BatchProcessors, these
  components no longer enforce timeout themselves and instead relies on
  Exporters to enforce own timeouts. In other words, the following are no longer
  supported.

  • with_max_export_timeout, with_timeout methods on BatchConfigBuilder,
    PeriodicReaderBuilder
  • OTEL_BLRP_EXPORT_TIMEOUT, OTEL_BSP_EXPORT_TIMEOUT

  Users are advised to configure timeout on the Exporters itself. For example,
  in the OTLP exporter, the export timeout can be configured using:

  • Environment variables
    • OTEL_EXPORTER_OTLP_TIMEOUT
    • OTEL_EXPORTER_OTLP_LOGS_TIMEOUT, OTEL_EXPORTER_OTLP_TRACES_TIMEOUT,
      OTEL_EXPORTER_OTLP_METRICS_TIMEOUT
  • The opentelemetry_otlp API, via .with_tonic().with_timeout() or
    .with_http().with_timeout().

• Breaking Introduced experimental_async_runtime feature for
  runtime-specific traits.

  • Runtime-specific features (rt-tokio, rt-tokio-current-thread, and
    rt-async-std) now depend on the experimental_async_runtime feature.
  • For most users, no action is required. Enabling runtime features such as
    rt-tokio, rt-tokio-current-thread, or rt-async-std will automatically
    enable the experimental_async_runtime feature.
  • If you're implementing a custom runtime, you must explicitly enable the
    experimental_async_runtimefeature in your Cargo.toml and implement the requiredRuntime` traits.

• Removed Metrics Cardinality Limit feature. This was originally introduced in
  #​1066 with a
  hardcoded limit of 2000 and no ability to change it. This feature will be
  re-introduced in a future date, along with the ability to change the cardinality
  limit.

• Breaking Removed unused opentelemetry_sdk::Error enum.

• Breaking (Affects custom Exporter authors only) Moved ExportError trait
  from opentelemetry::export::ExportError to opentelemetry_sdk::ExportError

• Breaking (Affects custom SpanExporter, SpanProcessor authors only): Rename
  namespaces for Span exporter structs/traits before:
  opentelemetry_sdk::export::spans::{ExportResult, SpanData, SpanExporter};
  now: opentelemetry_sdk::trace::{ExportResult, SpanData, SpanExporter};

• Breaking (Affects custom LogExporter, LogProcessor authors only): Rename
  namespaces for Log exporter structs/traits. before:
  opentelemetry_sdk::export::logs::{ExportResult, LogBatch, LogExporter}; now:
  opentelemetry_sdk::logs::{ExportResult, LogBatch, LogExporter};

• Breaking opentelemetry_sdk::LogRecord::default() method is removed. The
  only way to create log record outside opentelemetry_sdk crate is using
  Logger::create_log_record() method.

• Breaking: Rename namespaces for InMemoryExporters. (The module is still
  under "testing" feature flag)
  before:

  opentelemetry_sdk::testing::logs::{InMemoryLogExporter,
  InMemoryLogExporterBuilder};
  opentelemetry_sdk::testing::trace::{InMemorySpanExporter,
  InMemorySpanExporterBuilder};
  opentelemetry_sdk::testing::metrics::{InMemoryMetricExporter,
  InMemoryMetricExporterBuilder};

  now:

  opentelemetry_sdk::logs::{InMemoryLogExporter, InMemoryLogExporterBuilder};
  opentelemetry_sdk::trace::{InMemorySpanExporter,
  InMemorySpanExporterBuilder};
  opentelemetry_sdk::metrics::{InMemoryMetricExporter,
  InMemoryMetricExporterBuilder};

• Breaking Renamed LoggerProvider, Logger and LogRecord to
  SdkLoggerProvider,SdkLogger and SdkLogRecord respectively to avoid name
  collision with public API types.
  #​2612

• Breaking Renamed TracerProvider and Tracer to SdkTracerProvider and

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