Update opentelemetry-rust monorepo to 0.32.0 - autoclosed

[renovate]

ℹ️ Note

This PR body was truncated due to platform limits.

This PR contains the following updates:

Package	Type	Update	Change
opentelemetry (source)	dependencies	minor	0.22.0 → 0.32.0
opentelemetry-http (source)	dependencies	minor	0.11.0 → 0.32.0
opentelemetry-otlp (source)	dependencies	minor	0.15.0 → 0.32.0
opentelemetry-semantic-conventions (source)	dependencies	minor	0.14.0 → 0.32.0
opentelemetry_sdk (source)	dependencies	minor	0.22.1 → 0.32.0

---

Release Notes

open-telemetry/opentelemetry-rust (opentelemetry)

v0.32.0

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Released 2026-May-08

• Added BoundCounter<T> and BoundHistogram<T> types that cache resolved
  aggregator references for a fixed attribute set. Created via Counter::bind()
  and Histogram::bind(), bound instruments bypass per-call attribute lookup,
  providing significant performance improvements for hot paths where the same
  attributes are used repeatedly. Both types implement Clone so a single bound
  state can be shared across threads or modules without re-binding. Also adds
  the SyncInstrument::bind() trait method and BoundSyncInstrument<T> trait
  for SDK implementors; the trait method has a no-op default so custom
  SyncInstrument impls degrade gracefully without panicking. Gated behind the
  experimental_metrics_bound_instruments feature flag.
• Add reserve method to opentelemetry::propagation::Injector to hint at the number of elements that will be added to avoid multiple resize operations of the underlying data structure. Has an empty default implementation.
• Breaking Removed the following public fields and methods from the SpanBuilder #​3227:
  • trace_id, span_id, end_time, status, sampling_result
  • with_trace_id, with_span_id, with_end_time, with_status, with_sampling_result
• Added #[must_use] attribute to opentelemetry::metrics::AsyncInstrumentBuilder to add compile time warning when .build() is not called on observable instrument builders, preventing silent failures where callbacks are never registered and metrics are never reported.
• Breaking Moved the following SDK sampling types from opentelemetry::trace to opentelemetry_sdk::trace #​3277:
  • SamplingDecision, SamplingResult
  • These types are SDK implementation details and should be imported from opentelemetry_sdk::trace instead.
• "spec_unstable_logs_enabled" feature flag is removed. The capability (and the
  backing specification) is now stable and is enabled by default.
  3278
• Remove the empty "message" field from tracing events emitted via the internal-logs feature
• Fix panic when calling Context::current() from Drop implementations triggered by ContextGuard cleanup (#​3262).

v0.31.0

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Released 2025-Sep-25

• Breaking Change return type of opentelemetry::global::set_tracer_provider to Unit to align with metrics counterpart
• Add get_all method to opentelemetry::propagation::Extractor to return all values of the given propagation key and provide a default implementation.
• Add an IntoIterator implementation for opentelemetry::trace::TraceState to allow iterating through its key-value pair collection.

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 compatibility
  • 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.

v0.23.0

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Added

• #​1640 Add PropagationError
• #​1701 Gauge no longer requires otel-unstable feature flag, as OpenTelemetry specification for Gauge instrument is stable.

Removed

• Remove urlencoding crate dependency. #​1613
• Remove global providers for Logs $1691
  LoggerProviders are not meant for end users to get loggers from. It is only required for the log bridges.
  Below global constructs for the logs are removed from API:
  - opentelemetry::global::logger
  - opentelemetry::global::set_logger_provider
  - opentelemetry::global::shutdown_logger_provider
  - opentelemetry::global::logger_provider
  - opentelemetry::global::GlobalLoggerProvider
  - opentelemetry::global::ObjectSafeLoggerProvider
  For creating appenders using Logging bridge API, refer to the opentelemetry-tracing-appender example

Changed

• BREAKING Moving LogRecord implementation to the SDK. 1702.

  • Relocated LogRecord struct to SDK.
  • Introduced the LogRecord trait in the API for populating log records. This trait is implemented by the SDK.
    This is the breaking change for the authors of Log Appenders. Refer to the opentelemetry-appender-tracing for more details.

• Deprecate versioned_logger() in favor of logger_builder() 1567.

Before:

let logger = provider.versioned_logger(
    "my-logger-name",
    Some(env!("CARGO_PKG_VERSION")),
    Some("https://opentelemetry.io/schemas/1.0.0"),
    Some(vec![KeyValue::new("key", "value")]),
);

After:

let logger = provider
    .logger_builder("my-logger-name")
    .with_version(env!("CARGO_PKG_VERSION"))
    .with_schema_url("https://opentelemetry.io/schemas/1.0.0")
    .with_attributes(vec![KeyValue::new("key", "value")])
    .build();

• Deprecate versioned_tracer() in favor of tracer_builder() 1567.

Before:

let tracer = provider.versioned_tracer(
    "my-tracer-name",
    Some(env!("CARGO_PKG_VERSION")),
    Some("https://opentelemetry.io/schemas/1.0.0"),
    Some(vec![KeyValue::new("key", "value")]),
);

After:

let tracer = provider
    .tracer_builder("my-tracer-name")
    .with_version(env!("CARGO_PKG_VERSION"))
    .with_schema_url("https://opentelemetry.io/schemas/1.0.0")
    .with_attributes(vec![KeyValue::new("key", "value")])
    .build();

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

v0.32.0

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Released 2026-May-08

• reqwest's crypto backend has changed from ring to aws-lc-sys.

v0.31.0

Released 2025-Sep-25

• Implementation of Extractor::get_all for HeaderExtractor
• Support HttpClient implementation for HyperClient<C> with custom connectors beyond HttpConnector, enabling Unix Domain Socket connections and other custom transports
• Add reqwest and reqwest-blocking features to enable async and blocking
  reqwest HTTP clients
• Updated opentelemetry dependency to version 0.31.0.

v0.30.0

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Released 2025-May-23

• Updated opentelemetry dependency to version 0.30.0.

v0.29.0

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Released 2025-Mar-21

• Update opentelemetry dependency version to 0.29.

v0.28.0

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Released 2025-Feb-10

• Update opentelemetry dependency version to 0.28.
• Bump msrv to 1.75.0.
• Add "internal-logs" feature flag (enabled by default), and emit internal logs via tracing crate.
• Add HttpClient::send_bytes with bytes::Bytes request payload and deprecate old HttpClient::send function.

v0.27.0

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Released 2024-Nov-08

• Update opentelemetry dependency version to 0.27

• Bump MSRV to 1.70 #​2179

v0.26.0

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Released 2024-Sep-30

• Update opentelemetry dependency version to 0.26

v0.25.0

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• Update opentelemetry dependency version to 0.25
• Starting with this version, this crate will align with opentelemetry crate
  on major,minor versions.

v0.13.0

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• Breaking Correct the misspelling of "webkpi" to "webpki" in features #​1842
• Breaking Remove support for the isahc HTTP client #​1924
• Update to http v1 #​1674
• Update opentelemetry dependency version to 0.24

v0.12.0

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• Add reqwest-rustls-webpki-roots feature flag to configure reqwest to use embedded webpki-roots.
• Update opentelemetry dependency version to 0.23

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

v0.32.0

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Released 2026-May-08

• Add tls-provider-agnostic feature flag for environments that require a custom crypto backend (e.g., OpenSSL for FIPS compliance). Enables TLS code paths without bundling ring or aws-lc-rs.
• Add build() directly on SpanExporterBuilder, MetricExporterBuilder, and LogExporterBuilder
  (before selecting a transport), which auto-selects the transport based on the
  OTEL_EXPORTER_OTLP_PROTOCOL environment variable or enabled features.
  #​3394
• Breaking Removed ExportConfig, HasExportConfig, with_export_config(), HasTonicConfig, HasHttpConfig, TonicConfig, and HttpConfig from public API.
  Use the public WithExportConfig, WithTonicConfig, and WithHttpConfig trait methods instead, which remain unchanged.
• The gRPC/tonic OTLP exporter's build method now returns an error for all signals (traces, metrics, logs) when
  an https:// endpoint is configured but no TLS feature (tls-ring or tls-aws-lc) is enabled, instead of
  silently sending unencrypted traffic. When a TLS feature is enabled and an https:// endpoint is used without
  an explicit .with_tls_config(), a default ClientTlsConfig is automatically applied.
  #​3182
• Prevent auth tokens from leaking in export error messages. gRPC and HTTP
  exporter errors no longer include potentially sensitive server responses
  (e.g., authentication tokens echoed back). Error messages returned to SDK
  processors contain only the gRPC status code or HTTP status code. Full
  details are logged at DEBUG level only.
  #​3021
• Surface pre-flight transport error details at ERROR level when grpc-tonic
  OTLP export fails due to a local misconfiguration. When the returned
  tonic::Status wraps a local transport error (invalid URL, connect failure,
  DNS), its source chain (e.g., "transport error: invalid URI") is appended
  to the returned error so SDK processors surface it at ERROR without
  requiring DEBUG logging. Server-returned gRPC status messages remain
  DEBUG-only to preserve the auth-token leak safeguards from
  #​3021.
  #​3331
• Add support for per-signal protocol environment variables:
  OTEL_EXPORTER_OTLP_TRACES_PROTOCOL, OTEL_EXPORTER_OTLP_METRICS_PROTOCOL,
  OTEL_EXPORTER_OTLP_LOGS_PROTOCOL. These allow configuring different transport protocols
  per signal type. Signal-specific vars take precedence over generic OTEL_EXPORTER_OTLP_PROTOCOL.
  The auto-select build() method on each exporter builder now respects the full priority chain:
  signal-specific env var > generic env var > feature-based default.
• Transport/protocol mismatch validation: HTTP transport returns InvalidConfig when gRPC protocol
  is requested; gRPC transport returns InvalidConfig when an HTTP protocol is requested.
• Breaking: Protocol::default() no longer consults the OTEL_EXPORTER_OTLP_PROTOCOL
  environment variable. It now returns only the feature-based default (http-json > http-proto >
  grpc-tonic). Protocol resolution from environment variables is handled internally by the
  exporter builders. Users who relied on Protocol::default() to read env vars should use
  Protocol::from_env() instead.
• Add support for OTEL_EXPORTER_OTLP_METRICS_TEMPORALITY_PREFERENCE environment variable
  to configure metrics temporality. Accepted values: cumulative (default), delta,
  lowmemory (case-insensitive). Programmatic .with_temporality() overrides the env var.
• Fix NoHttpClient error when multiple HTTP client features are enabled by using priority-based selection (reqwest-client > hyper-client > reqwest-blocking-client). #​2994
• Add partial success response handling for OTLP exporters (traces, metrics, logs) per OTLP spec. Exporters now log warnings when the server returns partial success responses with rejected items and error messages. #​865
• Refactor internal-logs feature in opentelemetry-otlp to reduce unnecessary dependencies3191
• Fixed [#​2777](https://github.com/open-telemetry/opentelemetry rust/issues/2777) to properly handle shutdown_with_timeout() when using grpc-tonic.
• Deprecate tls feature in favor of explicit tls-ring and tls-aws-lc features.
  Migration: Replace tls with tls-ring (or tls-aws-lc). Users of tls-roots or tls-webpki-roots must now also enable one of these.
• Prevent logging of header values in OTLP tonic exporter #​3465

v0.31.1: opentelemetry-otlp 0.31.1

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What's Changed

• feat(OTLP): add tls-ring, tls-aws-lc, and tls-provider-agnostic feature flags [patch release v0.31.1] by @​lalitb in #​3426

Full Changelog: open-telemetry/opentelemetry-rust@v0.31.0...opentelemetry-otlp-0.31.1

v0.31.0

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Released 2025-Sep-25

• Update opentelemetry-proto and opentelemetry-http dependency version to 0.31.0
• Add HTTP compression support with gzip-http and zstd-http feature flags
• Add retry with exponential backoff and throttling support for HTTP and gRPC exporters
  This behaviour is opt in via the experimental-grpc-retry and experimental-http-retry flags on this crate. You can customize the retry policy using the with_retry_policy on the exporter builders.

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 milliseconds.

• 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

Compare Source

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

Compare Source

• 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

Compare Source

• 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

v0.16.0

Compare Source

Fixed

• URL encoded values in OTEL_EXPORTER_OTLP_HEADERS are now correctly decoded. #​1578
• OTLP exporter will not change the URL added through ExportConfig #​1706
• Default grpc endpoint will not have path based on signal(e.g /v1/traces) #​1706
• Fix feature flags for OTEL_EXPORTER_OTLP_PROTOCOL_DEFAULT #​1746

Added

• Added DeltaTemporalitySelector (#​1568)
• Add webpki-roots features to reqwest and tonic backends

Changed

• Breaking Remove global provider for Logs #​1691
  • The method OtlpLogPipeline::install_simple() and OtlpLogPipeline::install_batch() now return LoggerProvider instead of
    Logger. Refer to the basic-otlp and basic-otlp-http examples for how to initialize OTLP Log Exporter to use with OpenTelemetryLogBridge and OpenTelemetryTracingBridge respectively.
• Update opentelemetry dependency version to 0.23
• Update opentelemetry_sdk dependency version to 0.23
• Update opentelemetry-http dependency version to 0.12
• Update opentelemetry-proto dependency version to 0.6

open-telemetry/opentelemetry-rust (opentelemetry-semantic-conventions)

v0.32.0

Compare Source

Released 2026-May-08

v0.31.0

Compare Source

Released 2025-Sep-25

• Update to v1.34.0 of the semantic conventions.

v0.30.0

Compare Source

Released 2025-May-23

• Update to v1.32.0 of the semantic conventions.

v0.29.0

Compare Source

Released 2025-Mar-21

• Update to v1.31.0 of the semantic conventions.

v0.28.0

Compare Source

Released 2025-Feb-10

• Update to v1.29.0 of the semantic conventions.
• Bump msrv to 1.75.0.

v0.27.0

Compare Source

Released 2024-Nov-11

• Bump MSRV to 1.70 #​2179
• Update to v1.28.0 of the semantic conventions.

v0.26.0

Compare Source

Released 2024-Sep-30

Changed

• Starting with this version, this crate will use Weaver for the generation of
  the semantic conventions.
• Breaking Introduced a new feature semconv_experimental to enable experimental semantic conventions.
  This feature is disabled by default.

v0.25.0

Compare Source

Changed

• Starting with this version, this crate will align with opentelemetry crate
  on major,minor versions.
• Update to v1.27.0 of the semantic conventions.
  #​2000

v0.16.0

Compare Source

Changed

• Breaking Moved duplicated (and unrelated) attributes from opentelemetry_semantic_conventions::trace and opentelemetry_semantic_conventions::resource into opentelemetry_semantic_conventions::attribute (which now contains all semantic attributes). trace and resource now only contain references to attributes which fall under their respective category.

Added

• Created opentelemetry_semantic_conventions::metric to store metric semantic conventions.

v0.15.0

Compare Source

Changed

• Update to v1.24.0 of the semantic conventions.
  #​1596
• Update to v1.25.0 of the semantic conventions.
  #​1681

open-telemetry/opentelemetry-rust (opentelemetry_sdk)

v0.32.1

Released 2026-May-23

• BaggagePropagator now enforces the W3C Baggage maximum header length
  (8192 bytes) and maximum list-member count (64) when extracting an inbound
  baggage header. Headers exceeding 8192 bytes are dropped at the
  propagator boundary; headers with more than 64 list members are
  truncated to the first 64 entries. The change keeps the

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