OpenTelemetry PHP

TraceAttributes

in

• Application

Table of Contents

Constants

ANDROID_OS_API_LEVEL  = 'android.os.api_level'

Uniquely identifies the framework API revision offered by a version (`os.version`) of the android operating system. More information can be found [here](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels).

ANDROID_STATE  = 'android.state'

Deprecated use the `device.app.lifecycle` event definition including `android.state` as a payload field instead.

ARTIFACT_ATTESTATION_FILENAME  = 'artifact.attestation.filename'

The provenance filename of the built attestation which directly relates to the build artifact filename. This filename SHOULD accompany the artifact at publish time. See the [SLSA Relationship](https://slsa.dev/spec/v1.0/distributing-provenance#relationship-between-artifacts-and-attestations) specification for more information.

ARTIFACT_ATTESTATION_HASH  = 'artifact.attestation.hash'

The full [hash value (see glossary)](https://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.186-5.pdf), of the built attestation. Some envelopes in the software attestation space also refer to this as the [digest](https://github.com/in-toto/attestation/blob/main/spec/README.md#in-toto-attestation-framework-spec).

ARTIFACT_ATTESTATION_ID  = 'artifact.attestation.id'

The id of the build [software attestation](https://slsa.dev/attestation-model).

ARTIFACT_FILENAME  = 'artifact.filename'

The human readable file name of the artifact, typically generated during build and release processes. Often includes the package name and version in the file name.

ARTIFACT_HASH  = 'artifact.hash'

The full [hash value (see glossary)](https://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.186-5.pdf), often found in checksum.txt on a release of the artifact and used to verify package integrity.

ARTIFACT_PURL  = 'artifact.purl'

The [Package URL](https://github.com/package-url/purl-spec) of the [package artifact](https://slsa.dev/spec/v1.0/terminology#package-model) provides a standard way to identify and locate the packaged artifact.

ARTIFACT_VERSION  = 'artifact.version'

The version of the artifact.

ASPNETCORE_DIAGNOSTICS_EXCEPTION_RESULT  = 'aspnetcore.diagnostics.exception.result'

ASP.NET Core exception middleware handling result

ASPNETCORE_DIAGNOSTICS_HANDLER_TYPE  = 'aspnetcore.diagnostics.handler.type'

Full type name of the [`IExceptionHandler`](https://learn.microsoft.com/dotnet/api/microsoft.aspnetcore.diagnostics.iexceptionhandler) implementation that handled the exception.

ASPNETCORE_RATE_LIMITING_POLICY  = 'aspnetcore.rate_limiting.policy'

Rate limiting policy name.

ASPNETCORE_RATE_LIMITING_RESULT  = 'aspnetcore.rate_limiting.result'

Rate-limiting result, shows whether the lease was acquired or contains a rejection reason

ASPNETCORE_REQUEST_IS_UNHANDLED  = 'aspnetcore.request.is_unhandled'

Flag indicating if request was handled by the application pipeline.

ASPNETCORE_ROUTING_IS_FALLBACK  = 'aspnetcore.routing.is_fallback'

A value that indicates whether the matched route is a fallback route.

ASPNETCORE_ROUTING_MATCH_STATUS  = 'aspnetcore.routing.match_status'

Match result - success or failure

AWS_DYNAMODB_ATTRIBUTE_DEFINITIONS  = 'aws.dynamodb.attribute_definitions'

The JSON-serialized value of each item in the `AttributeDefinitions` request field.

AWS_DYNAMODB_ATTRIBUTES_TO_GET  = 'aws.dynamodb.attributes_to_get'

The value of the `AttributesToGet` request parameter.

AWS_DYNAMODB_CONSISTENT_READ  = 'aws.dynamodb.consistent_read'

The value of the `ConsistentRead` request parameter.

AWS_DYNAMODB_CONSUMED_CAPACITY  = 'aws.dynamodb.consumed_capacity'

The JSON-serialized value of each item in the `ConsumedCapacity` response field.

AWS_DYNAMODB_COUNT  = 'aws.dynamodb.count'

The value of the `Count` response parameter.

AWS_DYNAMODB_EXCLUSIVE_START_TABLE  = 'aws.dynamodb.exclusive_start_table'

The value of the `ExclusiveStartTableName` request parameter.

AWS_DYNAMODB_GLOBAL_SECONDARY_INDEX_UPDATES  = 'aws.dynamodb.global_secondary_index_updates'

The JSON-serialized value of each item in the `GlobalSecondaryIndexUpdates` request field.

AWS_DYNAMODB_GLOBAL_SECONDARY_INDEXES  = 'aws.dynamodb.global_secondary_indexes'

The JSON-serialized value of each item of the `GlobalSecondaryIndexes` request field

AWS_DYNAMODB_INDEX_NAME  = 'aws.dynamodb.index_name'

The value of the `IndexName` request parameter.

AWS_DYNAMODB_ITEM_COLLECTION_METRICS  = 'aws.dynamodb.item_collection_metrics'

The JSON-serialized value of the `ItemCollectionMetrics` response field.

AWS_DYNAMODB_LIMIT  = 'aws.dynamodb.limit'

The value of the `Limit` request parameter.

AWS_DYNAMODB_LOCAL_SECONDARY_INDEXES  = 'aws.dynamodb.local_secondary_indexes'

The JSON-serialized value of each item of the `LocalSecondaryIndexes` request field.

AWS_DYNAMODB_PROJECTION  = 'aws.dynamodb.projection'

The value of the `ProjectionExpression` request parameter.

AWS_DYNAMODB_PROVISIONED_READ_CAPACITY  = 'aws.dynamodb.provisioned_read_capacity'

The value of the `ProvisionedThroughput.ReadCapacityUnits` request parameter.

AWS_DYNAMODB_PROVISIONED_WRITE_CAPACITY  = 'aws.dynamodb.provisioned_write_capacity'

The value of the `ProvisionedThroughput.WriteCapacityUnits` request parameter.

AWS_DYNAMODB_SCAN_FORWARD  = 'aws.dynamodb.scan_forward'

The value of the `ScanIndexForward` request parameter.

AWS_DYNAMODB_SCANNED_COUNT  = 'aws.dynamodb.scanned_count'

The value of the `ScannedCount` response parameter.

AWS_DYNAMODB_SEGMENT  = 'aws.dynamodb.segment'

The value of the `Segment` request parameter.

AWS_DYNAMODB_SELECT  = 'aws.dynamodb.select'

The value of the `Select` request parameter.

AWS_DYNAMODB_TABLE_COUNT  = 'aws.dynamodb.table_count'

The number of items in the `TableNames` response parameter.

AWS_DYNAMODB_TABLE_NAMES  = 'aws.dynamodb.table_names'

The keys in the `RequestItems` object field.

AWS_DYNAMODB_TOTAL_SEGMENTS  = 'aws.dynamodb.total_segments'

The value of the `TotalSegments` request parameter.

AWS_ECS_CLUSTER_ARN  = 'aws.ecs.cluster.arn'

The ARN of an [ECS cluster](https://docs.aws.amazon.com/AmazonECS/latest/developerguide/clusters.html).

AWS_ECS_CONTAINER_ARN  = 'aws.ecs.container.arn'

The Amazon Resource Name (ARN) of an [ECS container instance](https://docs.aws.amazon.com/AmazonECS/latest/developerguide/ECS_instances.html).

AWS_ECS_LAUNCHTYPE  = 'aws.ecs.launchtype'

The [launch type](https://docs.aws.amazon.com/AmazonECS/latest/developerguide/launch_types.html) for an ECS task.

AWS_ECS_TASK_ARN  = 'aws.ecs.task.arn'

The ARN of a running [ECS task](https://docs.aws.amazon.com/AmazonECS/latest/developerguide/ecs-account-settings.html#ecs-resource-ids).

AWS_ECS_TASK_FAMILY  = 'aws.ecs.task.family'

The family name of the [ECS task definition](https://docs.aws.amazon.com/AmazonECS/latest/developerguide/task_definitions.html) used to create the ECS task.

AWS_ECS_TASK_ID  = 'aws.ecs.task.id'

The ID of a running ECS task. The ID MUST be extracted from `task.arn`.

AWS_ECS_TASK_REVISION  = 'aws.ecs.task.revision'

The revision for the task definition used to create the ECS task.

AWS_EKS_CLUSTER_ARN  = 'aws.eks.cluster.arn'

The ARN of an EKS cluster.

AWS_LAMBDA_INVOKED_ARN  = 'aws.lambda.invoked_arn'

The full invoked ARN as provided on the `Context` passed to the function (`Lambda-Runtime-Invoked-Function-Arn` header on the `/runtime/invocation/next` applicable).

AWS_LOG_GROUP_ARNS  = 'aws.log.group.arns'

The Amazon Resource Name(s) (ARN) of the AWS log group(s).

AWS_LOG_GROUP_NAMES  = 'aws.log.group.names'

The name(s) of the AWS log group(s) an application is writing to.

AWS_LOG_STREAM_ARNS  = 'aws.log.stream.arns'

The ARN(s) of the AWS log stream(s).

AWS_LOG_STREAM_NAMES  = 'aws.log.stream.names'

The name(s) of the AWS log stream(s) an application is writing to.

AWS_REQUEST_ID  = 'aws.request_id'

The AWS request ID as returned in the response headers `x-amz-request-id` or `x-amz-requestid`.

AWS_S3_BUCKET  = 'aws.s3.bucket'

The S3 bucket name the request refers to. Corresponds to the `--bucket` parameter of the [S3 API](https://docs.aws.amazon.com/cli/latest/reference/s3api/index.html) operations.

AWS_S3_COPY_SOURCE  = 'aws.s3.copy_source'

The source object (in the form `bucket`/`key`) for the copy operation.

AWS_S3_DELETE  = 'aws.s3.delete'

The delete request container that specifies the objects to be deleted.

AWS_S3_KEY  = 'aws.s3.key'

The S3 object key the request refers to. Corresponds to the `--key` parameter of the [S3 API](https://docs.aws.amazon.com/cli/latest/reference/s3api/index.html) operations.

AWS_S3_PART_NUMBER  = 'aws.s3.part_number'

The part number of the part being uploaded in a multipart-upload operation. This is a positive integer between 1 and 10,000.

AWS_S3_UPLOAD_ID  = 'aws.s3.upload_id'

Upload ID that identifies the multipart upload.

AZ_NAMESPACE  = 'az.namespace'

[Azure Resource Provider Namespace](https://learn.microsoft.com/azure/azure-resource-manager/management/azure-services-resource-providers) as recognized by the client.

AZ_SERVICE_REQUEST_ID  = 'az.service_request_id'

The unique identifier of the service request. It's generated by the Azure service and returned with the response.

BROWSER_BRANDS  = 'browser.brands'

Array of brand name and version separated by a space This value is intended to be taken from the [UA client hints API](https://wicg.github.io/ua-client-hints/#interface) (`navigator.userAgentData.brands`).

BROWSER_LANGUAGE  = 'browser.language'

Preferred language of the user using the browser This value is intended to be taken from the Navigator API `navigator.language`.

BROWSER_MOBILE  = 'browser.mobile'

A boolean that is true if the browser is running on a mobile device This value is intended to be taken from the [UA client hints API](https://wicg.github.io/ua-client-hints/#interface) (`navigator.userAgentData.mobile`). If unavailable, this attribute SHOULD be left unset.

BROWSER_PLATFORM  = 'browser.platform'

The platform on which the browser is running This value is intended to be taken from the [UA client hints API](https://wicg.github.io/ua-client-hints/#interface) (`navigator.userAgentData.platform`). If unavailable, the legacy `navigator.platform` API SHOULD NOT be used instead and this attribute SHOULD be left unset in order for the values to be consistent.

CICD_PIPELINE_NAME  = 'cicd.pipeline.name'

The human readable name of the pipeline within a CI/CD system.

CICD_PIPELINE_RUN_ID  = 'cicd.pipeline.run.id'

The unique identifier of a pipeline run within a CI/CD system.

CICD_PIPELINE_TASK_NAME  = 'cicd.pipeline.task.name'

The human readable name of a task within a pipeline. Task here most closely aligns with a [computing process](https://en.wikipedia.org/wiki/Pipeline_(computing)) in a pipeline. Other terms for tasks include commands, steps, and procedures.

CICD_PIPELINE_TASK_RUN_ID  = 'cicd.pipeline.task.run.id'

The unique identifier of a task run within a pipeline.

CICD_PIPELINE_TASK_RUN_URL_FULL  = 'cicd.pipeline.task.run.url.full'

The [URL](https://en.wikipedia.org/wiki/URL) of the pipeline run providing the complete address in order to locate and identify the pipeline run.

CICD_PIPELINE_TASK_TYPE  = 'cicd.pipeline.task.type'

The type of the task within a pipeline.

CLIENT_ADDRESS  = 'client.address'

Client address - domain name if available without reverse DNS lookup; otherwise, IP address or Unix domain socket name.

CLIENT_PORT  = 'client.port'

Client port number.

CLOUD_ACCOUNT_ID  = 'cloud.account.id'

The cloud account ID the resource is assigned to.

CLOUD_AVAILABILITY_ZONE  = 'cloud.availability_zone'

Cloud regions often have multiple, isolated locations known as zones to increase availability. Availability zone represents the zone where the resource is running.

CLOUD_PLATFORM  = 'cloud.platform'

The cloud platform in use.

CLOUD_PROVIDER  = 'cloud.provider'

Name of the cloud provider.

CLOUD_REGION  = 'cloud.region'

The geographical region the resource is running.

CLOUD_RESOURCE_ID  = 'cloud.resource_id'

Cloud provider-specific native identifier of the monitored cloud resource (e.g. an [ARN](https://docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html) on AWS, a [fully qualified resource ID](https://learn.microsoft.com/rest/api/resources/resources/get-by-id) on Azure, a [full resource name](https://cloud.google.com/apis/design/resource_names#full_resource_name) on GCP)

CLOUDEVENTS_EVENT_ID  = 'cloudevents.event_id'

The [event_id](https://github.com/cloudevents/spec/blob/v1.0.2/cloudevents/spec.md#id) uniquely identifies the event.

CLOUDEVENTS_EVENT_SOURCE  = 'cloudevents.event_source'

The [source](https://github.com/cloudevents/spec/blob/v1.0.2/cloudevents/spec.md#source-1) identifies the context in which an event happened.

CLOUDEVENTS_EVENT_SPEC_VERSION  = 'cloudevents.event_spec_version'

The [version of the CloudEvents specification](https://github.com/cloudevents/spec/blob/v1.0.2/cloudevents/spec.md#specversion) which the event uses.

CLOUDEVENTS_EVENT_SUBJECT  = 'cloudevents.event_subject'

The [subject](https://github.com/cloudevents/spec/blob/v1.0.2/cloudevents/spec.md#subject) of the event in the context of the event producer (identified by source).

CLOUDEVENTS_EVENT_TYPE  = 'cloudevents.event_type'

The [event_type](https://github.com/cloudevents/spec/blob/v1.0.2/cloudevents/spec.md#type) contains a value describing the type of event related to the originating occurrence.

CODE_COLUMN  = 'code.column'

The column number in `code.filepath` best representing the operation. It SHOULD point within the code unit named in `code.function`.

CODE_FILEPATH  = 'code.filepath'

The source code file name that identifies the code unit as uniquely as possible (preferably an absolute file path).

CODE_FUNCTION  = 'code.function'

The method or function name, or equivalent (usually rightmost part of the code unit's name).

CODE_LINENO  = 'code.lineno'

The line number in `code.filepath` best representing the operation. It SHOULD point within the code unit named in `code.function`.

CODE_NAMESPACE  = 'code.namespace'

The "namespace" within which `code.function` is defined. Usually the qualified class or module name, such that `code.namespace` + some separator + `code.function` form a unique identifier for the code unit.

CODE_STACKTRACE  = 'code.stacktrace'

A stacktrace as a string in the natural representation for the language runtime. The representation is to be determined and documented by each language SIG.

CONTAINER_COMMAND  = 'container.command'

The command used to run the container (i.e. the command name).

CONTAINER_COMMAND_ARGS  = 'container.command_args'

All the command arguments (including the command/executable itself) run by the container.

CONTAINER_COMMAND_LINE  = 'container.command_line'

The full command run by the container as a single string representing the full command.

CONTAINER_CPU_STATE  = 'container.cpu.state'

Deprecated, use `cpu.mode` instead.

CONTAINER_CSI_PLUGIN_NAME  = 'container.csi.plugin.name'

The name of the CSI ([Container Storage Interface](https://github.com/container-storage-interface/spec)) plugin used by the volume.

CONTAINER_CSI_VOLUME_ID  = 'container.csi.volume.id'

The unique volume ID returned by the CSI ([Container Storage Interface](https://github.com/container-storage-interface/spec)) plugin.

CONTAINER_ID  = 'container.id'

Container ID. Usually a UUID, as for example used to [identify Docker containers](https://docs.docker.com/engine/containers/run/#container-identification). The UUID might be abbreviated.

CONTAINER_IMAGE_ID  = 'container.image.id'

Runtime specific image identifier. Usually a hash algorithm followed by a UUID.

CONTAINER_IMAGE_NAME  = 'container.image.name'

Name of the image the container was built on.

CONTAINER_IMAGE_REPO_DIGESTS  = 'container.image.repo_digests'

Repo digests of the container image as provided by the container runtime.

CONTAINER_IMAGE_TAGS  = 'container.image.tags'

Container image tags. An example can be found in [Docker Image Inspect](https://docs.docker.com/engine/api/v1.43/#tag/Image/operation/ImageInspect). Should be only the `<tag>` section of the full name for example from `registry.example.com/my-org/my-image:<tag>`.

CONTAINER_LABEL  = 'container.label'

Container labels, `<key>` being the label name, the value being the label value.

CONTAINER_LABELS  = 'container.labels'

Deprecated, use `container.label` instead.

CONTAINER_NAME  = 'container.name'

Container name used by container runtime.

CONTAINER_RUNTIME  = 'container.runtime'

The container runtime managing this container.

CPU_MODE  = 'cpu.mode'

The mode of the CPU

DB_CASSANDRA_CONSISTENCY_LEVEL  = 'db.cassandra.consistency_level'

The consistency level of the query. Based on consistency values from [CQL](https://docs.datastax.com/en/cassandra-oss/3.0/cassandra/dml/dmlConfigConsistency.html).

DB_CASSANDRA_COORDINATOR_DC  = 'db.cassandra.coordinator.dc'

The data center of the coordinating node for a query.

DB_CASSANDRA_COORDINATOR_ID  = 'db.cassandra.coordinator.id'

The ID of the coordinating node for a query.

DB_CASSANDRA_IDEMPOTENCE  = 'db.cassandra.idempotence'

Whether or not the query is idempotent.

DB_CASSANDRA_PAGE_SIZE  = 'db.cassandra.page_size'

The fetch size used for paging, i.e. how many rows will be returned at once.

DB_CASSANDRA_SPECULATIVE_EXECUTION_COUNT  = 'db.cassandra.speculative_execution_count'

The number of times a query was speculatively executed. Not set or `0` if the query was not executed speculatively.

DB_CASSANDRA_TABLE  = 'db.cassandra.table'

Deprecated, use `db.collection.name` instead.

DB_CLIENT_CONNECTION_POOL_NAME  = 'db.client.connection.pool.name'

The name of the connection pool; unique within the instrumented application. In case the connection pool implementation doesn't provide a name, instrumentation SHOULD use a combination of parameters that would make the name unique, for example, combining attributes `server.address`, `server.port`, and `db.namespace`, formatted as `server.address:server.port/db.namespace`. Instrumentations that generate connection pool name following different patterns SHOULD document it.

DB_CLIENT_CONNECTION_STATE  = 'db.client.connection.state'

The state of a connection in the pool

DB_CLIENT_CONNECTIONS_POOL_NAME  = 'db.client.connections.pool.name'

Deprecated, use `db.client.connection.pool.name` instead.

DB_CLIENT_CONNECTIONS_STATE  = 'db.client.connections.state'

Deprecated, use `db.client.connection.state` instead.

DB_COLLECTION_NAME  = 'db.collection.name'

The name of a collection (table, container) within the database.

DB_CONNECTION_STRING  = 'db.connection_string'

Deprecated, use `server.address`, `server.port` attributes instead.

DB_COSMOSDB_CLIENT_ID  = 'db.cosmosdb.client_id'

Unique Cosmos client instance id.

DB_COSMOSDB_CONNECTION_MODE  = 'db.cosmosdb.connection_mode'

Cosmos client connection mode.

DB_COSMOSDB_CONTAINER  = 'db.cosmosdb.container'

Deprecated, use `db.collection.name` instead.

DB_COSMOSDB_OPERATION_TYPE  = 'db.cosmosdb.operation_type'

Cosmos DB Operation Type.

DB_COSMOSDB_REQUEST_CHARGE  = 'db.cosmosdb.request_charge'

RU consumed for that operation

DB_COSMOSDB_REQUEST_CONTENT_LENGTH  = 'db.cosmosdb.request_content_length'

Request payload size in bytes

DB_COSMOSDB_STATUS_CODE  = 'db.cosmosdb.status_code'

Deprecated, use `db.response.status_code` instead.

DB_COSMOSDB_SUB_STATUS_CODE  = 'db.cosmosdb.sub_status_code'

Cosmos DB sub status code.

DB_ELASTICSEARCH_CLUSTER_NAME  = 'db.elasticsearch.cluster.name'

Deprecated, use `db.namespace` instead.

DB_ELASTICSEARCH_NODE_NAME  = 'db.elasticsearch.node.name'

Represents the human-readable identifier of the node/instance to which a request was routed.

DB_ELASTICSEARCH_PATH_PARTS  = 'db.elasticsearch.path_parts'

A dynamic value in the url path.

DB_INSTANCE_ID  = 'db.instance.id'

Deprecated, no general replacement at this time. For Elasticsearch, use `db.elasticsearch.node.name` instead.

DB_JDBC_DRIVER_CLASSNAME  = 'db.jdbc.driver_classname'

Removed, no replacement at this time.

DB_MONGODB_COLLECTION  = 'db.mongodb.collection'

Deprecated, use `db.collection.name` instead.

DB_MSSQL_INSTANCE_NAME  = 'db.mssql.instance_name'

Deprecated, SQL Server instance is now populated as a part of `db.namespace` attribute.

DB_NAME  = 'db.name'

Deprecated, use `db.namespace` instead.

DB_NAMESPACE  = 'db.namespace'

The name of the database, fully qualified within the server address and port.

DB_OPERATION  = 'db.operation'

Deprecated, use `db.operation.name` instead.

DB_OPERATION_BATCH_SIZE  = 'db.operation.batch.size'

The number of queries included in a batch operation.

DB_OPERATION_NAME  = 'db.operation.name'

The name of the operation or command being executed.

DB_QUERY_PARAMETER  = 'db.query.parameter'

A query parameter used in `db.query.text`, with `<key>` being the parameter name, and the attribute value being a string representation of the parameter value.

DB_QUERY_TEXT  = 'db.query.text'

The database query being executed.

DB_REDIS_DATABASE_INDEX  = 'db.redis.database_index'

Deprecated, use `db.namespace` instead.

DB_RESPONSE_STATUS_CODE  = 'db.response.status_code'

Database response status code.

DB_SQL_TABLE  = 'db.sql.table'

Deprecated, use `db.collection.name` instead.

DB_STATEMENT  = 'db.statement'

The database statement being executed.

DB_SYSTEM  = 'db.system'

The database management system (DBMS) product as identified by the client instrumentation.

DB_USER  = 'db.user'

Deprecated, no replacement at this time.

DEPLOYMENT_ENVIRONMENT  = 'deployment.environment'

'Deprecated, use `deployment.environment.name` instead.'

DEPLOYMENT_ENVIRONMENT_NAME  = 'deployment.environment.name'

Name of the [deployment environment](https://wikipedia.org/wiki/Deployment_environment) (aka deployment tier).

DEPLOYMENT_ID  = 'deployment.id'

The id of the deployment.

DEPLOYMENT_NAME  = 'deployment.name'

The name of the deployment.

DEPLOYMENT_STATUS  = 'deployment.status'

The status of the deployment.

DESTINATION_ADDRESS  = 'destination.address'

Destination address - domain name if available without reverse DNS lookup; otherwise, IP address or Unix domain socket name.

DESTINATION_PORT  = 'destination.port'

Destination port number

DEVICE_ID  = 'device.id'

A unique identifier representing the device

DEVICE_MANUFACTURER  = 'device.manufacturer'

The name of the device manufacturer

DEVICE_MODEL_IDENTIFIER  = 'device.model.identifier'

The model identifier for the device

DEVICE_MODEL_NAME  = 'device.model.name'

The marketing name for the device model

DISK_IO_DIRECTION  = 'disk.io.direction'

The disk IO operation direction.

DNS_QUESTION_NAME  = 'dns.question.name'

The name being queried.

ENDUSER_ID  = 'enduser.id'

Deprecated, use `user.id` instead.

ENDUSER_ROLE  = 'enduser.role'

Deprecated, use `user.roles` instead.

ENDUSER_SCOPE  = 'enduser.scope'

Deprecated, no replacement at this time.

ERROR_TYPE  = 'error.type'

Describes a class of error the operation ended with.

EVENT_NAME  = 'event.name'

Identifies the class / type of event.

EXCEPTION_ESCAPED  = 'exception.escaped'

SHOULD be set to true if the exception event is recorded at a point where it is known that the exception is escaping the scope of the span.

EXCEPTION_MESSAGE  = 'exception.message'

The exception message.

EXCEPTION_STACKTRACE  = 'exception.stacktrace'

A stacktrace as a string in the natural representation for the language runtime. The representation is to be determined and documented by each language SIG.

EXCEPTION_TYPE  = 'exception.type'

The type of the exception (its fully-qualified class name, if applicable). The dynamic type of the exception should be preferred over the static type in languages that support it.

FAAS_COLDSTART  = 'faas.coldstart'

A boolean that is true if the serverless function is executed for the first time (aka cold-start).

FAAS_CRON  = 'faas.cron'

A string containing the schedule period as [Cron Expression](https://docs.oracle.com/cd/E12058_01/doc/doc.1014/e12030/cron_expressions.htm).

FAAS_DOCUMENT_COLLECTION  = 'faas.document.collection'

The name of the source on which the triggering operation was performed. For example, in Cloud Storage or S3 corresponds to the bucket name, and in Cosmos DB to the database name.

FAAS_DOCUMENT_NAME  = 'faas.document.name'

The document name/table subjected to the operation. For example, in Cloud Storage or S3 is the name of the file, and in Cosmos DB the table name.

FAAS_DOCUMENT_OPERATION  = 'faas.document.operation'

Describes the type of the operation that was performed on the data.

FAAS_DOCUMENT_TIME  = 'faas.document.time'

A string containing the time when the data was accessed in the [ISO 8601](https://www.iso.org/iso-8601-date-and-time-format.html) format expressed in [UTC](https://www.w3.org/TR/NOTE-datetime).

FAAS_INSTANCE  = 'faas.instance'

The execution environment ID as a string, that will be potentially reused for other invocations to the same function/function version.

FAAS_INVOCATION_ID  = 'faas.invocation_id'

The invocation ID of the current function invocation.

FAAS_INVOKED_NAME  = 'faas.invoked_name'

The name of the invoked function.

FAAS_INVOKED_PROVIDER  = 'faas.invoked_provider'

The cloud provider of the invoked function.

FAAS_INVOKED_REGION  = 'faas.invoked_region'

The cloud region of the invoked function.

FAAS_MAX_MEMORY  = 'faas.max_memory'

The amount of memory available to the serverless function converted to Bytes.

FAAS_NAME  = 'faas.name'

The name of the single function that this runtime instance executes.

FAAS_TIME  = 'faas.time'

A string containing the function invocation time in the [ISO 8601](https://www.iso.org/iso-8601-date-and-time-format.html) format expressed in [UTC](https://www.w3.org/TR/NOTE-datetime).

FAAS_TRIGGER  = 'faas.trigger'

Type of the trigger which caused this function invocation.

FAAS_VERSION  = 'faas.version'

The immutable version of the function being executed.

FEATURE_FLAG_KEY  = 'feature_flag.key'

The unique identifier of the feature flag.

FEATURE_FLAG_PROVIDER_NAME  = 'feature_flag.provider_name'

The name of the service provider that performs the flag evaluation.

FEATURE_FLAG_VARIANT  = 'feature_flag.variant'

SHOULD be a semantic identifier for a value. If one is unavailable, a stringified version of the value can be used.

FILE_ACCESSED  = 'file.accessed'

Time when the file was last accessed, in ISO 8601 format.

FILE_ATTRIBUTES  = 'file.attributes'

Array of file attributes.

FILE_CHANGED  = 'file.changed'

Time when the file attributes or metadata was last changed, in ISO 8601 format.

FILE_CREATED  = 'file.created'

Time when the file was created, in ISO 8601 format.

FILE_DIRECTORY  = 'file.directory'

Directory where the file is located. It should include the drive letter, when appropriate.

FILE_EXTENSION  = 'file.extension'

File extension, excluding the leading dot.

FILE_FORK_NAME  = 'file.fork_name'

Name of the fork. A fork is additional data associated with a filesystem object.

FILE_GROUP_ID  = 'file.group.id'

Primary Group ID (GID) of the file.

FILE_GROUP_NAME  = 'file.group.name'

Primary group name of the file.

FILE_INODE  = 'file.inode'

Inode representing the file in the filesystem.

FILE_MODE  = 'file.mode'

Mode of the file in octal representation.

FILE_MODIFIED  = 'file.modified'

Time when the file content was last modified, in ISO 8601 format.

FILE_NAME  = 'file.name'

Name of the file including the extension, without the directory.

FILE_OWNER_ID  = 'file.owner.id'

The user ID (UID) or security identifier (SID) of the file owner.

FILE_OWNER_NAME  = 'file.owner.name'

Username of the file owner.

FILE_PATH  = 'file.path'

Full path to the file, including the file name. It should include the drive letter, when appropriate.

FILE_SIZE  = 'file.size'

File size in bytes.

FILE_SYMBOLIC_LINK_TARGET_PATH  = 'file.symbolic_link.target_path'

Path to the target of a symbolic link.

GCP_CLIENT_SERVICE  = 'gcp.client.service'

Identifies the Google Cloud service for which the official client library is intended.

GCP_CLOUD_RUN_JOB_EXECUTION  = 'gcp.cloud_run.job.execution'

The name of the Cloud Run [execution](https://cloud.google.com/run/docs/managing/job-executions) being run for the Job, as set by the [`CLOUD_RUN_EXECUTION`](https://cloud.google.com/run/docs/container-contract#jobs-env-vars) environment variable.

GCP_CLOUD_RUN_JOB_TASK_INDEX  = 'gcp.cloud_run.job.task_index'

The index for a task within an execution as provided by the [`CLOUD_RUN_TASK_INDEX`](https://cloud.google.com/run/docs/container-contract#jobs-env-vars) environment variable.

GCP_GCE_INSTANCE_HOSTNAME  = 'gcp.gce.instance.hostname'

The hostname of a GCE instance. This is the full value of the default or [custom hostname](https://cloud.google.com/compute/docs/instances/custom-hostname-vm).

GCP_GCE_INSTANCE_NAME  = 'gcp.gce.instance.name'

The instance name of a GCE instance. This is the value provided by `host.name`, the visible name of the instance in the Cloud Console UI, and the prefix for the default hostname of the instance as defined by the [default internal DNS name](https://cloud.google.com/compute/docs/internal-dns#instance-fully-qualified-domain-names).

GEN_AI_COMPLETION  = 'gen_ai.completion'

Deprecated, use Event API to report completions contents.

GEN_AI_OPENAI_REQUEST_RESPONSE_FORMAT  = 'gen_ai.openai.request.response_format'

The response format that is requested.

GEN_AI_OPENAI_REQUEST_SEED  = 'gen_ai.openai.request.seed'

Requests with same seed value more likely to return same result.

GEN_AI_OPENAI_REQUEST_SERVICE_TIER  = 'gen_ai.openai.request.service_tier'

The service tier requested. May be a specific tier, detault, or auto.

GEN_AI_OPENAI_RESPONSE_SERVICE_TIER  = 'gen_ai.openai.response.service_tier'

The service tier used for the response.

GEN_AI_OPERATION_NAME  = 'gen_ai.operation.name'

The name of the operation being performed.

GEN_AI_PROMPT  = 'gen_ai.prompt'

Deprecated, use Event API to report prompt contents.

GEN_AI_REQUEST_FREQUENCY_PENALTY  = 'gen_ai.request.frequency_penalty'

The frequency penalty setting for the GenAI request.

GEN_AI_REQUEST_MAX_TOKENS  = 'gen_ai.request.max_tokens'

The maximum number of tokens the model generates for a request.

GEN_AI_REQUEST_MODEL  = 'gen_ai.request.model'

The name of the GenAI model a request is being made to.

GEN_AI_REQUEST_PRESENCE_PENALTY  = 'gen_ai.request.presence_penalty'

The presence penalty setting for the GenAI request.

GEN_AI_REQUEST_STOP_SEQUENCES  = 'gen_ai.request.stop_sequences'

List of sequences that the model will use to stop generating further tokens.

GEN_AI_REQUEST_TEMPERATURE  = 'gen_ai.request.temperature'

The temperature setting for the GenAI request.

GEN_AI_REQUEST_TOP_K  = 'gen_ai.request.top_k'

The top_k sampling setting for the GenAI request.

GEN_AI_REQUEST_TOP_P  = 'gen_ai.request.top_p'

The top_p sampling setting for the GenAI request.

GEN_AI_RESPONSE_FINISH_REASONS  = 'gen_ai.response.finish_reasons'

Array of reasons the model stopped generating tokens, corresponding to each generation received.

GEN_AI_RESPONSE_ID  = 'gen_ai.response.id'

The unique identifier for the completion.

GEN_AI_RESPONSE_MODEL  = 'gen_ai.response.model'

The name of the model that generated the response.

GEN_AI_SYSTEM  = 'gen_ai.system'

The Generative AI product as identified by the client or server instrumentation.

GEN_AI_TOKEN_TYPE  = 'gen_ai.token.type'

The type of token being counted.

GEN_AI_USAGE_COMPLETION_TOKENS  = 'gen_ai.usage.completion_tokens'

Deprecated, use `gen_ai.usage.output_tokens` instead.

GEN_AI_USAGE_INPUT_TOKENS  = 'gen_ai.usage.input_tokens'

The number of tokens used in the GenAI input (prompt).

GEN_AI_USAGE_OUTPUT_TOKENS  = 'gen_ai.usage.output_tokens'

The number of tokens used in the GenAI response (completion).

GEN_AI_USAGE_PROMPT_TOKENS  = 'gen_ai.usage.prompt_tokens'

Deprecated, use `gen_ai.usage.input_tokens` instead.

GO_MEMORY_TYPE  = 'go.memory.type'

The type of memory.

GRAPHQL_DOCUMENT  = 'graphql.document'

The GraphQL document being executed.

GRAPHQL_OPERATION_NAME  = 'graphql.operation.name'

The name of the operation being executed.

GRAPHQL_OPERATION_TYPE  = 'graphql.operation.type'

The type of the operation being executed.

HEROKU_APP_ID  = 'heroku.app.id'

Unique identifier for the application

HEROKU_RELEASE_COMMIT  = 'heroku.release.commit'

Commit hash for the current release

HEROKU_RELEASE_CREATION_TIMESTAMP  = 'heroku.release.creation_timestamp'

Time and date the release was created

HOST_ARCH  = 'host.arch'

The CPU architecture the host system is running on.

HOST_CPU_CACHE_L2_SIZE  = 'host.cpu.cache.l2.size'

The amount of level 2 memory cache available to the processor (in Bytes).

HOST_CPU_FAMILY  = 'host.cpu.family'

Family or generation of the CPU.

HOST_CPU_MODEL_ID  = 'host.cpu.model.id'

Model identifier. It provides more granular information about the CPU, distinguishing it from other CPUs within the same family.

HOST_CPU_MODEL_NAME  = 'host.cpu.model.name'

Model designation of the processor.

HOST_CPU_STEPPING  = 'host.cpu.stepping'

Stepping or core revisions.

HOST_CPU_VENDOR_ID  = 'host.cpu.vendor.id'

Processor manufacturer identifier. A maximum 12-character string.

HOST_ID  = 'host.id'

Unique host ID. For Cloud, this must be the instance_id assigned by the cloud provider. For non-containerized systems, this should be the `machine-id`. See the table below for the sources to use to determine the `machine-id` based on operating system.

HOST_IMAGE_ID  = 'host.image.id'

VM image ID or host OS image ID. For Cloud, this value is from the provider.

HOST_IMAGE_NAME  = 'host.image.name'

Name of the VM image or OS install the host was instantiated from.

HOST_IMAGE_VERSION  = 'host.image.version'

The version string of the VM image or host OS as defined in [Version Attributes](/docs/resource/README.md#version-attributes).

HOST_IP  = 'host.ip'

Available IP addresses of the host, excluding loopback interfaces.

HOST_MAC  = 'host.mac'

Available MAC addresses of the host, excluding loopback interfaces.

HOST_NAME  = 'host.name'

Name of the host. On Unix systems, it may contain what the hostname command returns, or the fully qualified hostname, or another name specified by the user.

HOST_TYPE  = 'host.type'

Type of host. For Cloud, this must be the machine type.

HTTP_CLIENT_IP  = 'http.client_ip'

Deprecated, use `client.address` instead.

HTTP_CONNECTION_STATE  = 'http.connection.state'

State of the HTTP connection in the HTTP connection pool.

HTTP_FLAVOR  = 'http.flavor'

Deprecated, use `network.protocol.name` instead.

HTTP_HOST  = 'http.host'

Deprecated, use one of `server.address`, `client.address` or `http.request.header.host` instead, depending on the usage.

HTTP_METHOD  = 'http.method'

Deprecated, use `http.request.method` instead.

HTTP_REQUEST_BODY_SIZE  = 'http.request.body.size'

The size of the request payload body in bytes. This is the number of bytes transferred excluding headers and is often, but not always, present as the [Content-Length](https://www.rfc-editor.org/rfc/rfc9110.html#field.content-length) header. For requests using transport encoding, this should be the compressed size.

HTTP_REQUEST_CONTENT_LENGTH  = 'http.request_content_length'

Deprecated, use `http.request.header.<key>` instead.

HTTP_REQUEST_CONTENT_LENGTH_UNCOMPRESSED  = 'http.request_content_length_uncompressed'

Deprecated, use `http.request.body.size` instead.

HTTP_REQUEST_HEADER  = 'http.request.header'

HTTP request headers, `<key>` being the normalized HTTP Header name (lowercase), the value being the header values.

HTTP_REQUEST_METHOD  = 'http.request.method'

HTTP request method.

HTTP_REQUEST_METHOD_ORIGINAL  = 'http.request.method_original'

Original HTTP method sent by the client in the request line.

HTTP_REQUEST_RESEND_COUNT  = 'http.request.resend_count'

The ordinal number of request resending attempt (for any reason, including redirects).

HTTP_REQUEST_SIZE  = 'http.request.size'

The total size of the request in bytes. This should be the total number of bytes sent over the wire, including the request line (HTTP/1.1), framing (HTTP/2 and HTTP/3), headers, and request body if any.

HTTP_RESPONSE_BODY_SIZE  = 'http.response.body.size'

The size of the response payload body in bytes. This is the number of bytes transferred excluding headers and is often, but not always, present as the [Content-Length](https://www.rfc-editor.org/rfc/rfc9110.html#field.content-length) header. For requests using transport encoding, this should be the compressed size.

HTTP_RESPONSE_CONTENT_LENGTH  = 'http.response_content_length'

Deprecated, use `http.response.header.<key>` instead.

HTTP_RESPONSE_CONTENT_LENGTH_UNCOMPRESSED  = 'http.response_content_length_uncompressed'

Deprecated, use `http.response.body.size` instead.

HTTP_RESPONSE_HEADER  = 'http.response.header'

HTTP response headers, `<key>` being the normalized HTTP Header name (lowercase), the value being the header values.

HTTP_RESPONSE_SIZE  = 'http.response.size'

The total size of the response in bytes. This should be the total number of bytes sent over the wire, including the status line (HTTP/1.1), framing (HTTP/2 and HTTP/3), headers, and response body and trailers if any.

HTTP_RESPONSE_STATUS_CODE  = 'http.response.status_code'

[HTTP response status code](https://tools.ietf.org/html/rfc7231#section-6).

HTTP_ROUTE  = 'http.route'

The matched route, that is, the path template in the format used by the respective server framework.

HTTP_SCHEME  = 'http.scheme'

Deprecated, use `url.scheme` instead.

HTTP_SERVER_NAME  = 'http.server_name'

Deprecated, use `server.address` instead.

HTTP_STATUS_CODE  = 'http.status_code'

Deprecated, use `http.response.status_code` instead.

HTTP_TARGET  = 'http.target'

Deprecated, use `url.path` and `url.query` instead.

HTTP_URL  = 'http.url'

Deprecated, use `url.full` instead.

HTTP_USER_AGENT  = 'http.user_agent'

Deprecated, use `user_agent.original` instead.

IOS_STATE  = 'ios.state'

Deprecated use the `device.app.lifecycle` event definition including `ios.state` as a payload field instead.

JVM_BUFFER_POOL_NAME  = 'jvm.buffer.pool.name'

Name of the buffer pool.

JVM_GC_ACTION  = 'jvm.gc.action'

Name of the garbage collector action.

JVM_GC_NAME  = 'jvm.gc.name'

Name of the garbage collector.

JVM_MEMORY_POOL_NAME  = 'jvm.memory.pool.name'

Name of the memory pool.

JVM_MEMORY_TYPE  = 'jvm.memory.type'

The type of memory.

JVM_THREAD_DAEMON  = 'jvm.thread.daemon'

Whether the thread is daemon or not.

JVM_THREAD_STATE  = 'jvm.thread.state'

State of the thread.

K8S_CLUSTER_NAME  = 'k8s.cluster.name'

The name of the cluster.

K8S_CLUSTER_UID  = 'k8s.cluster.uid'

A pseudo-ID for the cluster, set to the UID of the `kube-system` namespace.

K8S_CONTAINER_NAME  = 'k8s.container.name'

The name of the Container from Pod specification, must be unique within a Pod. Container runtime usually uses different globally unique name (`container.name`).

K8S_CONTAINER_RESTART_COUNT  = 'k8s.container.restart_count'

Number of times the container was restarted. This attribute can be used to identify a particular container (running or stopped) within a container spec.

K8S_CONTAINER_STATUS_LAST_TERMINATED_REASON  = 'k8s.container.status.last_terminated_reason'

Last terminated reason of the Container.

K8S_CRONJOB_NAME  = 'k8s.cronjob.name'

The name of the CronJob.

K8S_CRONJOB_UID  = 'k8s.cronjob.uid'

The UID of the CronJob.

K8S_DAEMONSET_NAME  = 'k8s.daemonset.name'

The name of the DaemonSet.

K8S_DAEMONSET_UID  = 'k8s.daemonset.uid'

The UID of the DaemonSet.

K8S_DEPLOYMENT_NAME  = 'k8s.deployment.name'

The name of the Deployment.

K8S_DEPLOYMENT_UID  = 'k8s.deployment.uid'

The UID of the Deployment.

K8S_JOB_NAME  = 'k8s.job.name'

The name of the Job.

K8S_JOB_UID  = 'k8s.job.uid'

The UID of the Job.

K8S_NAMESPACE_NAME  = 'k8s.namespace.name'

The name of the namespace that the pod is running in.

K8S_NODE_NAME  = 'k8s.node.name'

The name of the Node.

K8S_NODE_UID  = 'k8s.node.uid'

The UID of the Node.

K8S_POD_ANNOTATION  = 'k8s.pod.annotation'

The annotation key-value pairs placed on the Pod, the `<key>` being the annotation name, the value being the annotation value.

K8S_POD_LABEL  = 'k8s.pod.label'

The label key-value pairs placed on the Pod, the `<key>` being the label name, the value being the label value.

K8S_POD_LABELS  = 'k8s.pod.labels'

Deprecated, use `k8s.pod.label` instead.

K8S_POD_NAME  = 'k8s.pod.name'

The name of the Pod.

K8S_POD_UID  = 'k8s.pod.uid'

The UID of the Pod.

K8S_REPLICASET_NAME  = 'k8s.replicaset.name'

The name of the ReplicaSet.

K8S_REPLICASET_UID  = 'k8s.replicaset.uid'

The UID of the ReplicaSet.

K8S_STATEFULSET_NAME  = 'k8s.statefulset.name'

The name of the StatefulSet.

K8S_STATEFULSET_UID  = 'k8s.statefulset.uid'

The UID of the StatefulSet.

K8S_VOLUME_NAME  = 'k8s.volume.name'

The name of the K8s volume.

K8S_VOLUME_TYPE  = 'k8s.volume.type'

The type of the K8s volume.

LINUX_MEMORY_SLAB_STATE  = 'linux.memory.slab.state'

The Linux Slab memory state

LOG_FILE_NAME  = 'log.file.name'

The basename of the file.

LOG_FILE_NAME_RESOLVED  = 'log.file.name_resolved'

The basename of the file, with symlinks resolved.

LOG_FILE_PATH  = 'log.file.path'

The full path to the file.

LOG_FILE_PATH_RESOLVED  = 'log.file.path_resolved'

The full path to the file, with symlinks resolved.

LOG_IOSTREAM  = 'log.iostream'

The stream associated with the log. See below for a list of well-known values.

LOG_RECORD_ORIGINAL  = 'log.record.original'

The complete original Log Record.

LOG_RECORD_UID  = 'log.record.uid'

A unique identifier for the Log Record.

MESSAGE_COMPRESSED_SIZE  = 'message.compressed_size'

Deprecated, use `rpc.message.compressed_size` instead.

MESSAGE_ID  = 'message.id'

Deprecated, use `rpc.message.id` instead.

MESSAGE_TYPE  = 'message.type'

Deprecated, use `rpc.message.type` instead.

MESSAGE_UNCOMPRESSED_SIZE  = 'message.uncompressed_size'

Deprecated, use `rpc.message.uncompressed_size` instead.

MESSAGING_BATCH_MESSAGE_COUNT  = 'messaging.batch.message_count'

The number of messages sent, received, or processed in the scope of the batching operation.

MESSAGING_CLIENT_ID  = 'messaging.client.id'

A unique identifier for the client that consumes or produces a message.

MESSAGING_CONSUMER_GROUP_NAME  = 'messaging.consumer.group.name'

The name of the consumer group with which a consumer is associated.

MESSAGING_DESTINATION_ANONYMOUS  = 'messaging.destination.anonymous'

A boolean that is true if the message destination is anonymous (could be unnamed or have auto-generated name).

MESSAGING_DESTINATION_NAME  = 'messaging.destination.name'

The message destination name Destination name SHOULD uniquely identify a specific queue, topic or other entity within the broker. If the broker doesn't have such notion, the destination name SHOULD uniquely identify the broker.

MESSAGING_DESTINATION_PARTITION_ID  = 'messaging.destination.partition.id'

The identifier of the partition messages are sent to or received from, unique within the `messaging.destination.name`.

MESSAGING_DESTINATION_PUBLISH_ANONYMOUS  = 'messaging.destination_publish.anonymous'

Deprecated, no replacement at this time.

MESSAGING_DESTINATION_PUBLISH_NAME  = 'messaging.destination_publish.name'

Deprecated, no replacement at this time.

MESSAGING_DESTINATION_SUBSCRIPTION_NAME  = 'messaging.destination.subscription.name'

The name of the destination subscription from which a message is consumed.

MESSAGING_DESTINATION_TEMPLATE  = 'messaging.destination.template'

Low cardinality representation of the messaging destination name Destination names could be constructed from templates. An example would be a destination name involving a user name or product id. Although the destination name in this case is of high cardinality, the underlying template is of low cardinality and can be effectively used for grouping and aggregation.

MESSAGING_DESTINATION_TEMPORARY  = 'messaging.destination.temporary'

A boolean that is true if the message destination is temporary and might not exist anymore after messages are processed.

MESSAGING_EVENTHUBS_CONSUMER_GROUP  = 'messaging.eventhubs.consumer.group'

Deprecated, use `messaging.consumer.group.name` instead.

MESSAGING_EVENTHUBS_MESSAGE_ENQUEUED_TIME  = 'messaging.eventhubs.message.enqueued_time'

The UTC epoch seconds at which the message has been accepted and stored in the entity.

MESSAGING_GCP_PUBSUB_MESSAGE_ACK_DEADLINE  = 'messaging.gcp_pubsub.message.ack_deadline'

The ack deadline in seconds set for the modify ack deadline request.

MESSAGING_GCP_PUBSUB_MESSAGE_ACK_ID  = 'messaging.gcp_pubsub.message.ack_id'

The ack id for a given message.

MESSAGING_GCP_PUBSUB_MESSAGE_DELIVERY_ATTEMPT  = 'messaging.gcp_pubsub.message.delivery_attempt'

The delivery attempt for a given message.

MESSAGING_GCP_PUBSUB_MESSAGE_ORDERING_KEY  = 'messaging.gcp_pubsub.message.ordering_key'

The ordering key for a given message. If the attribute is not present, the message does not have an ordering key.

MESSAGING_KAFKA_CONSUMER_GROUP  = 'messaging.kafka.consumer.group'

Deprecated, use `messaging.consumer.group.name` instead.

MESSAGING_KAFKA_DESTINATION_PARTITION  = 'messaging.kafka.destination.partition'

Deprecated, use `messaging.destination.partition.id` instead.

MESSAGING_KAFKA_MESSAGE_KEY  = 'messaging.kafka.message.key'

Message keys in Kafka are used for grouping alike messages to ensure they're processed on the same partition. They differ from `messaging.message.id` in that they're not unique. If the key is `null`, the attribute MUST NOT be set.

MESSAGING_KAFKA_MESSAGE_OFFSET  = 'messaging.kafka.message.offset'

Deprecated, use `messaging.kafka.offset` instead.

MESSAGING_KAFKA_MESSAGE_TOMBSTONE  = 'messaging.kafka.message.tombstone'

A boolean that is true if the message is a tombstone.

MESSAGING_KAFKA_OFFSET  = 'messaging.kafka.offset'

The offset of a record in the corresponding Kafka partition.

MESSAGING_MESSAGE_BODY_SIZE  = 'messaging.message.body.size'

The size of the message body in bytes.

MESSAGING_MESSAGE_CONVERSATION_ID  = 'messaging.message.conversation_id'

The conversation ID identifying the conversation to which the message belongs, represented as a string. Sometimes called "Correlation ID".

MESSAGING_MESSAGE_ENVELOPE_SIZE  = 'messaging.message.envelope.size'

The size of the message body and metadata in bytes.

MESSAGING_MESSAGE_ID  = 'messaging.message.id'

A value used by the messaging system as an identifier for the message, represented as a string.

MESSAGING_OPERATION  = 'messaging.operation'

Deprecated, use `messaging.operation.type` instead.

MESSAGING_OPERATION_NAME  = 'messaging.operation.name'

The system-specific name of the messaging operation.

MESSAGING_OPERATION_TYPE  = 'messaging.operation.type'

A string identifying the type of the messaging operation.

MESSAGING_RABBITMQ_DESTINATION_ROUTING_KEY  = 'messaging.rabbitmq.destination.routing_key'

RabbitMQ message routing key.

MESSAGING_RABBITMQ_MESSAGE_DELIVERY_TAG  = 'messaging.rabbitmq.message.delivery_tag'

RabbitMQ message delivery tag

MESSAGING_ROCKETMQ_CLIENT_GROUP  = 'messaging.rocketmq.client_group'

Deprecated, use `messaging.consumer.group.name` instead.

MESSAGING_ROCKETMQ_CONSUMPTION_MODEL  = 'messaging.rocketmq.consumption_model'

Model of message consumption. This only applies to consumer spans.

MESSAGING_ROCKETMQ_MESSAGE_DELAY_TIME_LEVEL  = 'messaging.rocketmq.message.delay_time_level'

The delay time level for delay message, which determines the message delay time.

MESSAGING_ROCKETMQ_MESSAGE_DELIVERY_TIMESTAMP  = 'messaging.rocketmq.message.delivery_timestamp'

The timestamp in milliseconds that the delay message is expected to be delivered to consumer.

MESSAGING_ROCKETMQ_MESSAGE_GROUP  = 'messaging.rocketmq.message.group'

It is essential for FIFO message. Messages that belong to the same message group are always processed one by one within the same consumer group.

MESSAGING_ROCKETMQ_MESSAGE_KEYS  = 'messaging.rocketmq.message.keys'

Key(s) of message, another way to mark message besides message id.

MESSAGING_ROCKETMQ_MESSAGE_TAG  = 'messaging.rocketmq.message.tag'

The secondary classifier of message besides topic.

MESSAGING_ROCKETMQ_MESSAGE_TYPE  = 'messaging.rocketmq.message.type'

Type of message.

MESSAGING_ROCKETMQ_NAMESPACE  = 'messaging.rocketmq.namespace'

Namespace of RocketMQ resources, resources in different namespaces are individual.

MESSAGING_SERVICEBUS_DESTINATION_SUBSCRIPTION_NAME  = 'messaging.servicebus.destination.subscription_name'

Deprecated, use `messaging.destination.subscription.name` instead.

MESSAGING_SERVICEBUS_DISPOSITION_STATUS  = 'messaging.servicebus.disposition_status'

Describes the [settlement type](https://learn.microsoft.com/azure/service-bus-messaging/message-transfers-locks-settlement#peeklock).

MESSAGING_SERVICEBUS_MESSAGE_DELIVERY_COUNT  = 'messaging.servicebus.message.delivery_count'

Number of deliveries that have been attempted for this message.

MESSAGING_SERVICEBUS_MESSAGE_ENQUEUED_TIME  = 'messaging.servicebus.message.enqueued_time'

The UTC epoch seconds at which the message has been accepted and stored in the entity.

MESSAGING_SYSTEM  = 'messaging.system'

The messaging system as identified by the client instrumentation.

NET_HOST_IP  = 'net.host.ip'

Deprecated, use `network.local.address`.

NET_HOST_NAME  = 'net.host.name'

Deprecated, use `server.address`.

NET_HOST_PORT  = 'net.host.port'

Deprecated, use `server.port`.

NET_PEER_IP  = 'net.peer.ip'

Deprecated, use `network.peer.address`.

NET_PEER_NAME  = 'net.peer.name'

Deprecated, use `server.address` on client spans and `client.address` on server spans.

NET_PEER_PORT  = 'net.peer.port'

Deprecated, use `server.port` on client spans and `client.port` on server spans.

NET_PROTOCOL_NAME  = 'net.protocol.name'

Deprecated, use `network.protocol.name`.

NET_PROTOCOL_VERSION  = 'net.protocol.version'

Deprecated, use `network.protocol.version`.

NET_SOCK_FAMILY  = 'net.sock.family'

Deprecated, use `network.transport` and `network.type`.

NET_SOCK_HOST_ADDR  = 'net.sock.host.addr'

Deprecated, use `network.local.address`.

NET_SOCK_HOST_PORT  = 'net.sock.host.port'

Deprecated, use `network.local.port`.

NET_SOCK_PEER_ADDR  = 'net.sock.peer.addr'

Deprecated, use `network.peer.address`.

NET_SOCK_PEER_NAME  = 'net.sock.peer.name'

Deprecated, no replacement at this time.

NET_SOCK_PEER_PORT  = 'net.sock.peer.port'

Deprecated, use `network.peer.port`.

NET_TRANSPORT  = 'net.transport'

Deprecated, use `network.transport`.

NETWORK_CARRIER_ICC  = 'network.carrier.icc'

The ISO 3166-1 alpha-2 2-character country code associated with the mobile carrier network.

NETWORK_CARRIER_MCC  = 'network.carrier.mcc'

The mobile carrier country code.

NETWORK_CARRIER_MNC  = 'network.carrier.mnc'

The mobile carrier network code.

NETWORK_CARRIER_NAME  = 'network.carrier.name'

The name of the mobile carrier.

NETWORK_CONNECTION_SUBTYPE  = 'network.connection.subtype'

This describes more details regarding the connection.type. It may be the type of cell technology connection, but it could be used for describing details about a wifi connection.

NETWORK_CONNECTION_TYPE  = 'network.connection.type'

The internet connection type.

NETWORK_IO_DIRECTION  = 'network.io.direction'

The network IO operation direction.

NETWORK_LOCAL_ADDRESS  = 'network.local.address'

Local address of the network connection - IP address or Unix domain socket name.

NETWORK_LOCAL_PORT  = 'network.local.port'

Local port number of the network connection.

NETWORK_PEER_ADDRESS  = 'network.peer.address'

Peer address of the network connection - IP address or Unix domain socket name.

NETWORK_PEER_PORT  = 'network.peer.port'

Peer port number of the network connection.

NETWORK_PROTOCOL_NAME  = 'network.protocol.name'

[OSI application layer](https://osi-model.com/application-layer/) or non-OSI equivalent.

NETWORK_PROTOCOL_VERSION  = 'network.protocol.version'

The actual version of the protocol used for network communication.

NETWORK_TRANSPORT  = 'network.transport'

[OSI transport layer](https://osi-model.com/transport-layer/) or [inter-process communication method](https://wikipedia.org/wiki/Inter-process_communication).

NETWORK_TYPE  = 'network.type'

[OSI network layer](https://osi-model.com/network-layer/) or non-OSI equivalent.

OCI_MANIFEST_DIGEST  = 'oci.manifest.digest'

The digest of the OCI image manifest. For container images specifically is the digest by which the container image is known.

OPENTRACING_REF_TYPE  = 'opentracing.ref_type'

Parent-child Reference type The causal relationship between a child Span and a parent Span.

OS_BUILD_ID  = 'os.build_id'

Unique identifier for a particular build or compilation of the operating system.

OS_DESCRIPTION  = 'os.description'

Human readable (not intended to be parsed) OS version information, like e.g. reported by `ver` or `lsb_release -a` commands.

OS_NAME  = 'os.name'

Human readable operating system name.

OS_TYPE  = 'os.type'

The operating system type.

OS_VERSION  = 'os.version'

The version string of the operating system as defined in [Version Attributes](/docs/resource/README.md#version-attributes).

OTEL_LIBRARY_NAME  = 'otel.library.name'

Deprecated. Use the `otel.scope.name` attribute

OTEL_LIBRARY_VERSION  = 'otel.library.version'

Deprecated. Use the `otel.scope.version` attribute.

OTEL_SCOPE_NAME  = 'otel.scope.name'

The name of the instrumentation scope - (`InstrumentationScope.Name` in OTLP).

OTEL_SCOPE_VERSION  = 'otel.scope.version'

The version of the instrumentation scope - (`InstrumentationScope.Version` in OTLP).

OTEL_STATUS_CODE  = 'otel.status_code'

Name of the code, either "OK" or "ERROR". MUST NOT be set if the status code is UNSET.

OTEL_STATUS_DESCRIPTION  = 'otel.status_description'

Description of the Status if it has a value, otherwise not set.

PEER_SERVICE  = 'peer.service'

The [`service.name`](/docs/resource/README.md#service) of the remote service. SHOULD be equal to the actual `service.name` resource attribute of the remote service if any.

POOL_NAME  = 'pool.name'

Deprecated, use `db.client.connection.pool.name` instead.

PROCESS_ARGS_COUNT  = 'process.args_count'

Length of the process.command_args array

PROCESS_COMMAND  = 'process.command'

The command used to launch the process (i.e. the command name). On Linux based systems, can be set to the zeroth string in `proc/[pid]/cmdline`. On Windows, can be set to the first parameter extracted from `GetCommandLineW`.

PROCESS_COMMAND_ARGS  = 'process.command_args'

All the command arguments (including the command/executable itself) as received by the process. On Linux-based systems (and some other Unixoid systems supporting procfs), can be set according to the list of null-delimited strings extracted from `proc/[pid]/cmdline`. For libc-based executables, this would be the full argv vector passed to `main`.

PROCESS_COMMAND_LINE  = 'process.command_line'

The full command used to launch the process as a single string representing the full command. On Windows, can be set to the result of `GetCommandLineW`. Do not set this if you have to assemble it just for monitoring; use `process.command_args` instead.

PROCESS_CONTEXT_SWITCH_TYPE  = 'process.context_switch_type'

Specifies whether the context switches for this data point were voluntary or involuntary.

PROCESS_CPU_STATE  = 'process.cpu.state'

Deprecated, use `cpu.mode` instead.

PROCESS_CREATION_TIME  = 'process.creation.time'

The date and time the process was created, in ISO 8601 format.

PROCESS_EXECUTABLE_BUILD_ID_GNU  = 'process.executable.build_id.gnu'

The GNU build ID as found in the `.note.gnu.build-id` ELF section (hex string).

PROCESS_EXECUTABLE_BUILD_ID_GO  = 'process.executable.build_id.go'

The Go build ID as retrieved by `go tool buildid <go executable>`.

PROCESS_EXECUTABLE_BUILD_ID_PROFILING  = 'process.executable.build_id.profiling'

Profiling specific build ID for executables. See the OTel specification for Profiles for more information.

PROCESS_EXECUTABLE_NAME  = 'process.executable.name'

The name of the process executable. On Linux based systems, can be set to the `Name` in `proc/[pid]/status`. On Windows, can be set to the base name of `GetProcessImageFileNameW`.

PROCESS_EXECUTABLE_PATH  = 'process.executable.path'

The full path to the process executable. On Linux based systems, can be set to the target of `proc/[pid]/exe`. On Windows, can be set to the result of `GetProcessImageFileNameW`.

PROCESS_EXIT_CODE  = 'process.exit.code'

The exit code of the process.

PROCESS_EXIT_TIME  = 'process.exit.time'

The date and time the process exited, in ISO 8601 format.

PROCESS_GROUP_LEADER_PID  = 'process.group_leader.pid'

The PID of the process's group leader. This is also the process group ID (PGID) of the process.

PROCESS_INTERACTIVE  = 'process.interactive'

Whether the process is connected to an interactive shell.

PROCESS_OWNER  = 'process.owner'

The username of the user that owns the process.

PROCESS_PAGING_FAULT_TYPE  = 'process.paging.fault_type'

The type of page fault for this data point. Type `major` is for major/hard page faults, and `minor` is for minor/soft page faults.

PROCESS_PARENT_PID  = 'process.parent_pid'

Parent Process identifier (PPID).

PROCESS_PID  = 'process.pid'

Process identifier (PID).

PROCESS_REAL_USER_ID  = 'process.real_user.id'

The real user ID (RUID) of the process.

PROCESS_REAL_USER_NAME  = 'process.real_user.name'

The username of the real user of the process.

PROCESS_RUNTIME_DESCRIPTION  = 'process.runtime.description'

An additional description about the runtime of the process, for example a specific vendor customization of the runtime environment.

PROCESS_RUNTIME_NAME  = 'process.runtime.name'

The name of the runtime of this process.

PROCESS_RUNTIME_VERSION  = 'process.runtime.version'

The version of the runtime of this process, as returned by the runtime without modification.

PROCESS_SAVED_USER_ID  = 'process.saved_user.id'

The saved user ID (SUID) of the process.

PROCESS_SAVED_USER_NAME  = 'process.saved_user.name'

The username of the saved user.

PROCESS_SESSION_LEADER_PID  = 'process.session_leader.pid'

The PID of the process's session leader. This is also the session ID (SID) of the process.

PROCESS_TITLE  = 'process.title'

Process title (proctitle)

PROCESS_USER_ID  = 'process.user.id'

The effective user ID (EUID) of the process.

PROCESS_USER_NAME  = 'process.user.name'

The username of the effective user of the process.

PROCESS_VPID  = 'process.vpid'

Virtual process identifier.

PROCESS_WORKING_DIRECTORY  = 'process.working_directory'

The working directory of the process.

RPC_CONNECT_RPC_ERROR_CODE  = 'rpc.connect_rpc.error_code'

The [error codes](https://connect.build/docs/protocol/#error-codes) of the Connect request. Error codes are always string values.

RPC_CONNECT_RPC_REQUEST_METADATA  = 'rpc.connect_rpc.request.metadata'

Connect request metadata, `<key>` being the normalized Connect Metadata key (lowercase), the value being the metadata values.

RPC_CONNECT_RPC_RESPONSE_METADATA  = 'rpc.connect_rpc.response.metadata'

Connect response metadata, `<key>` being the normalized Connect Metadata key (lowercase), the value being the metadata values.

RPC_GRPC_REQUEST_METADATA  = 'rpc.grpc.request.metadata'

gRPC request metadata, `<key>` being the normalized gRPC Metadata key (lowercase), the value being the metadata values.

RPC_GRPC_RESPONSE_METADATA  = 'rpc.grpc.response.metadata'

gRPC response metadata, `<key>` being the normalized gRPC Metadata key (lowercase), the value being the metadata values.

RPC_GRPC_STATUS_CODE  = 'rpc.grpc.status_code'

The [numeric status code](https://github.com/grpc/grpc/blob/v1.33.2/doc/statuscodes.md) of the gRPC request.

RPC_JSONRPC_ERROR_CODE  = 'rpc.jsonrpc.error_code'

`error.code` property of response if it is an error response.

RPC_JSONRPC_ERROR_MESSAGE  = 'rpc.jsonrpc.error_message'

`error.message` property of response if it is an error response.

RPC_JSONRPC_REQUEST_ID  = 'rpc.jsonrpc.request_id'

`id` property of request or response. Since protocol allows id to be int, string, `null` or missing (for notifications), value is expected to be cast to string for simplicity. Use empty string in case of `null` value. Omit entirely if this is a notification.

RPC_JSONRPC_VERSION  = 'rpc.jsonrpc.version'

Protocol version as in `jsonrpc` property of request/response. Since JSON-RPC 1.0 doesn't specify this, the value can be omitted.

RPC_MESSAGE_COMPRESSED_SIZE  = 'rpc.message.compressed_size'

Compressed size of the message in bytes.

RPC_MESSAGE_ID  = 'rpc.message.id'

MUST be calculated as two different counters starting from `1` one for sent messages and one for received message.

RPC_MESSAGE_TYPE  = 'rpc.message.type'

Whether this is a received or sent message.

RPC_MESSAGE_UNCOMPRESSED_SIZE  = 'rpc.message.uncompressed_size'

Uncompressed size of the message in bytes.

RPC_METHOD  = 'rpc.method'

The name of the (logical) method being called, must be equal to the $method part in the span name.

RPC_SERVICE  = 'rpc.service'

The full (logical) name of the service being called, including its package name, if applicable.

RPC_SYSTEM  = 'rpc.system'

A string identifying the remoting system. See below for a list of well-known identifiers.

SCHEMA_URL  = 'https://opentelemetry.io/schemas/1.27.0'

The URL of the OpenTelemetry schema for these keys and values.

SERVER_ADDRESS  = 'server.address'

Server domain name if available without reverse DNS lookup; otherwise, IP address or Unix domain socket name.

SERVER_PORT  = 'server.port'

Server port number.

SERVICE_INSTANCE_ID  = 'service.instance.id'

The string ID of the service instance.

SERVICE_NAME  = 'service.name'

Logical name of the service.

SERVICE_NAMESPACE  = 'service.namespace'

A namespace for `service.name`.

SERVICE_VERSION  = 'service.version'

The version string of the service API or implementation. The format is not defined by these conventions.

SESSION_ID  = 'session.id'

A unique id to identify a session.

SESSION_PREVIOUS_ID  = 'session.previous_id'

The previous `session.id` for this user, when known.

SIGNALR_CONNECTION_STATUS  = 'signalr.connection.status'

SignalR HTTP connection closure status.

SIGNALR_TRANSPORT  = 'signalr.transport'

[SignalR transport type](https://github.com/dotnet/aspnetcore/blob/main/src/SignalR/docs/specs/TransportProtocols.md)

SOURCE_ADDRESS  = 'source.address'

Source address - domain name if available without reverse DNS lookup; otherwise, IP address or Unix domain socket name.

SOURCE_PORT  = 'source.port'

Source port number

STATE  = 'state'

Deprecated, use `db.client.connection.state` instead.

SYSTEM_CPU_LOGICAL_NUMBER  = 'system.cpu.logical_number'

The logical CPU number [0..n-1]

SYSTEM_CPU_STATE  = 'system.cpu.state'

Deprecated, use `cpu.mode` instead.

SYSTEM_DEVICE  = 'system.device'

The device identifier

SYSTEM_FILESYSTEM_MODE  = 'system.filesystem.mode'

The filesystem mode

SYSTEM_FILESYSTEM_MOUNTPOINT  = 'system.filesystem.mountpoint'

The filesystem mount path

SYSTEM_FILESYSTEM_STATE  = 'system.filesystem.state'

The filesystem state

SYSTEM_FILESYSTEM_TYPE  = 'system.filesystem.type'

The filesystem type

SYSTEM_MEMORY_STATE  = 'system.memory.state'

The memory state

SYSTEM_NETWORK_STATE  = 'system.network.state'

A stateless protocol MUST NOT set this attribute

SYSTEM_PAGING_DIRECTION  = 'system.paging.direction'

The paging access direction

SYSTEM_PAGING_STATE  = 'system.paging.state'

The memory paging state

SYSTEM_PAGING_TYPE  = 'system.paging.type'

The memory paging type

SYSTEM_PROCESS_STATUS  = 'system.process.status'

The process state, e.g., [Linux Process State Codes](https://man7.org/linux/man-pages/man1/ps.1.html#PROCESS_STATE_CODES)

SYSTEM_PROCESSES_STATUS  = 'system.processes.status'

Deprecated, use `system.process.status` instead.

TELEMETRY_DISTRO_NAME  = 'telemetry.distro.name'

The name of the auto instrumentation agent or distribution, if used.

TELEMETRY_DISTRO_VERSION  = 'telemetry.distro.version'

The version string of the auto instrumentation agent or distribution, if used.

TELEMETRY_SDK_LANGUAGE  = 'telemetry.sdk.language'

The language of the telemetry SDK.

TELEMETRY_SDK_NAME  = 'telemetry.sdk.name'

The name of the telemetry SDK as defined above.

TELEMETRY_SDK_VERSION  = 'telemetry.sdk.version'

The version string of the telemetry SDK.

TEST_CASE_NAME  = 'test.case.name'

The fully qualified human readable name of the [test case](https://en.wikipedia.org/wiki/Test_case).

TEST_CASE_RESULT_STATUS  = 'test.case.result.status'

The status of the actual test case result from test execution.

TEST_SUITE_NAME  = 'test.suite.name'

The human readable name of a [test suite](https://en.wikipedia.org/wiki/Test_suite).

TEST_SUITE_RUN_STATUS  = 'test.suite.run.status'

The status of the test suite run.

THREAD_ID  = 'thread.id'

Current "managed" thread ID (as opposed to OS thread ID).

THREAD_NAME  = 'thread.name'

Current thread name.

TLS_CIPHER  = 'tls.cipher'

String indicating the [cipher](https://datatracker.ietf.org/doc/html/rfc5246#appendix-A.5) used during the current connection.

TLS_CLIENT_CERTIFICATE  = 'tls.client.certificate'

PEM-encoded stand-alone certificate offered by the client. This is usually mutually-exclusive of `client.certificate_chain` since this value also exists in that list.

TLS_CLIENT_CERTIFICATE_CHAIN  = 'tls.client.certificate_chain'

Array of PEM-encoded certificates that make up the certificate chain offered by the client. This is usually mutually-exclusive of `client.certificate` since that value should be the first certificate in the chain.

TLS_CLIENT_HASH_MD5  = 'tls.client.hash.md5'

Certificate fingerprint using the MD5 digest of DER-encoded version of certificate offered by the client. For consistency with other hash values, this value should be formatted as an uppercase hash.

TLS_CLIENT_HASH_SHA1  = 'tls.client.hash.sha1'

Certificate fingerprint using the SHA1 digest of DER-encoded version of certificate offered by the client. For consistency with other hash values, this value should be formatted as an uppercase hash.

TLS_CLIENT_HASH_SHA256  = 'tls.client.hash.sha256'

Certificate fingerprint using the SHA256 digest of DER-encoded version of certificate offered by the client. For consistency with other hash values, this value should be formatted as an uppercase hash.

TLS_CLIENT_ISSUER  = 'tls.client.issuer'

Distinguished name of [subject](https://datatracker.ietf.org/doc/html/rfc5280#section-4.1.2.6) of the issuer of the x.509 certificate presented by the client.

TLS_CLIENT_JA3  = 'tls.client.ja3'

A hash that identifies clients based on how they perform an SSL/TLS handshake.

TLS_CLIENT_NOT_AFTER  = 'tls.client.not_after'

Date/Time indicating when client certificate is no longer considered valid.

TLS_CLIENT_NOT_BEFORE  = 'tls.client.not_before'

Date/Time indicating when client certificate is first considered valid.

TLS_CLIENT_SERVER_NAME  = 'tls.client.server_name'

Deprecated, use `server.address` instead.

TLS_CLIENT_SUBJECT  = 'tls.client.subject'

Distinguished name of subject of the x.509 certificate presented by the client.

TLS_CLIENT_SUPPORTED_CIPHERS  = 'tls.client.supported_ciphers'

Array of ciphers offered by the client during the client hello.

TLS_CURVE  = 'tls.curve'

String indicating the curve used for the given cipher, when applicable

TLS_ESTABLISHED  = 'tls.established'

Boolean flag indicating if the TLS negotiation was successful and transitioned to an encrypted tunnel.

TLS_NEXT_PROTOCOL  = 'tls.next_protocol'

String indicating the protocol being tunneled. Per the values in the [IANA registry](https://www.iana.org/assignments/tls-extensiontype-values/tls-extensiontype-values.xhtml#alpn-protocol-ids), this string should be lower case.

TLS_PROTOCOL_NAME  = 'tls.protocol.name'

Normalized lowercase protocol name parsed from original string of the negotiated [SSL/TLS protocol version](https://www.openssl.org/docs/man1.1.1/man3/SSL_get_version.html#RETURN-VALUES)

TLS_PROTOCOL_VERSION  = 'tls.protocol.version'

Numeric part of the version parsed from the original string of the negotiated [SSL/TLS protocol version](https://www.openssl.org/docs/man1.1.1/man3/SSL_get_version.html#RETURN-VALUES)

TLS_RESUMED  = 'tls.resumed'

Boolean flag indicating if this TLS connection was resumed from an existing TLS negotiation.

TLS_SERVER_CERTIFICATE  = 'tls.server.certificate'

PEM-encoded stand-alone certificate offered by the server. This is usually mutually-exclusive of `server.certificate_chain` since this value also exists in that list.

TLS_SERVER_CERTIFICATE_CHAIN  = 'tls.server.certificate_chain'

Array of PEM-encoded certificates that make up the certificate chain offered by the server. This is usually mutually-exclusive of `server.certificate` since that value should be the first certificate in the chain.

TLS_SERVER_HASH_MD5  = 'tls.server.hash.md5'

Certificate fingerprint using the MD5 digest of DER-encoded version of certificate offered by the server. For consistency with other hash values, this value should be formatted as an uppercase hash.

TLS_SERVER_HASH_SHA1  = 'tls.server.hash.sha1'

Certificate fingerprint using the SHA1 digest of DER-encoded version of certificate offered by the server. For consistency with other hash values, this value should be formatted as an uppercase hash.

TLS_SERVER_HASH_SHA256  = 'tls.server.hash.sha256'

Certificate fingerprint using the SHA256 digest of DER-encoded version of certificate offered by the server. For consistency with other hash values, this value should be formatted as an uppercase hash.

TLS_SERVER_ISSUER  = 'tls.server.issuer'

Distinguished name of [subject](https://datatracker.ietf.org/doc/html/rfc5280#section-4.1.2.6) of the issuer of the x.509 certificate presented by the client.

TLS_SERVER_JA3S  = 'tls.server.ja3s'

A hash that identifies servers based on how they perform an SSL/TLS handshake.

TLS_SERVER_NOT_AFTER  = 'tls.server.not_after'

Date/Time indicating when server certificate is no longer considered valid.

TLS_SERVER_NOT_BEFORE  = 'tls.server.not_before'

Date/Time indicating when server certificate is first considered valid.

TLS_SERVER_SUBJECT  = 'tls.server.subject'

Distinguished name of subject of the x.509 certificate presented by the server.

URL_DOMAIN  = 'url.domain'

Domain extracted from the `url.full`, such as "opentelemetry.io".

URL_EXTENSION  = 'url.extension'

The file extension extracted from the `url.full`, excluding the leading dot.

URL_FRAGMENT  = 'url.fragment'

The [URI fragment](https://www.rfc-editor.org/rfc/rfc3986#section-3.5) component

URL_FULL  = 'url.full'

Absolute URL describing a network resource according to [RFC3986](https://www.rfc-editor.org/rfc/rfc3986) For network calls, URL usually has `scheme://host[:port][path][?query][#fragment]` format, where the fragment is not transmitted over HTTP, but if it is known, it SHOULD be included nevertheless.

URL_ORIGINAL  = 'url.original'

Unmodified original URL as seen in the event source.

URL_PATH  = 'url.path'

The [URI path](https://www.rfc-editor.org/rfc/rfc3986#section-3.3) component

URL_PORT  = 'url.port'

Port extracted from the `url.full`

URL_QUERY  = 'url.query'

The [URI query](https://www.rfc-editor.org/rfc/rfc3986#section-3.4) component

URL_REGISTERED_DOMAIN  = 'url.registered_domain'

The highest registered url domain, stripped of the subdomain.

URL_SCHEME  = 'url.scheme'

The [URI scheme](https://www.rfc-editor.org/rfc/rfc3986#section-3.1) component identifying the used protocol.

URL_SUBDOMAIN  = 'url.subdomain'

The subdomain portion of a fully qualified domain name includes all of the names except the host name under the registered_domain. In a partially qualified domain, or if the qualification level of the full name cannot be determined, subdomain contains all of the names below the registered domain.

URL_TEMPLATE  = 'url.template'

The low-cardinality template of an [absolute path reference](https://www.rfc-editor.org/rfc/rfc3986#section-4.2).

URL_TOP_LEVEL_DOMAIN  = 'url.top_level_domain'

The effective top level domain (eTLD), also known as the domain suffix, is the last part of the domain name. For example, the top level domain for example.com is `com`.

USER_AGENT_NAME  = 'user_agent.name'

Name of the user-agent extracted from original. Usually refers to the browser's name.

USER_AGENT_ORIGINAL  = 'user_agent.original'

Value of the [HTTP User-Agent](https://www.rfc-editor.org/rfc/rfc9110.html#field.user-agent) header sent by the client.

USER_AGENT_VERSION  = 'user_agent.version'

Version of the user-agent extracted from original. Usually refers to the browser's version

USER_EMAIL  = 'user.email'

User email address.

USER_FULL_NAME  = 'user.full_name'

User's full name

USER_HASH  = 'user.hash'

Unique user hash to correlate information for a user in anonymized form.

USER_ID  = 'user.id'

Unique identifier of the user.

USER_NAME  = 'user.name'

Short name or login/username of the user.

USER_ROLES  = 'user.roles'

Array of user roles at the time of the event.

V8JS_GC_TYPE  = 'v8js.gc.type'

The type of garbage collection.

V8JS_HEAP_SPACE_NAME  = 'v8js.heap.space.name'

The name of the space type of heap memory.

VCS_REPOSITORY_CHANGE_ID  = 'vcs.repository.change.id'

The ID of the change (pull request/merge request) if applicable. This is usually a unique (within repository) identifier generated by the VCS system.

VCS_REPOSITORY_CHANGE_TITLE  = 'vcs.repository.change.title'

The human readable title of the change (pull request/merge request). This title is often a brief summary of the change and may get merged in to a ref as the commit summary.

VCS_REPOSITORY_REF_NAME  = 'vcs.repository.ref.name'

The name of the [reference](https://git-scm.com/docs/gitglossary#def_ref) such as **branch** or **tag** in the repository.

VCS_REPOSITORY_REF_REVISION  = 'vcs.repository.ref.revision'

The revision, literally [revised version](https://www.merriam-webster.com/dictionary/revision), The revision most often refers to a commit object in Git, or a revision number in SVN.

VCS_REPOSITORY_REF_TYPE  = 'vcs.repository.ref.type'

The type of the [reference](https://git-scm.com/docs/gitglossary#def_ref) in the repository.

VCS_REPOSITORY_URL_FULL  = 'vcs.repository.url.full'

The [URL](https://en.wikipedia.org/wiki/URL) of the repository providing the complete address in order to locate and identify the repository.

WEBENGINE_DESCRIPTION  = 'webengine.description'

Additional description of the web engine (e.g. detailed version and edition information).

WEBENGINE_NAME  = 'webengine.name'

The name of the web engine.

WEBENGINE_VERSION  = 'webengine.version'

The version of the web engine.