export declare const OTEL_ENV_VARS: {
    readonly enabled: 'N8N_OTEL_ENABLED';
    readonly exporterEndpoint: 'N8N_OTEL_EXPORTER_OTLP_ENDPOINT';
    readonly exporterTracingPath: 'N8N_OTEL_EXPORTER_OTLP_TRACING_PATH';
    readonly exporterHeaders: 'N8N_OTEL_EXPORTER_OTLP_HEADERS';
    readonly exporterServiceName: 'N8N_OTEL_EXPORTER_SERVICE_NAME';
    readonly tracesSampleRate: 'N8N_OTEL_TRACES_SAMPLE_RATE';
    readonly startupConnectivityTimeoutMs: 'N8N_OTEL_STARTUP_CONNECTIVITY_TIMEOUT_MS';
    readonly includeNodeSpans: 'N8N_OTEL_TRACES_INCLUDE_NODE_SPANS';
    readonly injectOutbound: 'N8N_OTEL_TRACES_INJECT_OUTBOUND';
    readonly productionExecutionsOnly: 'N8N_OTEL_TRACES_PRODUCTION_ONLY';
};
export declare const OTEL_TEST_SPAN_NAME = "n8n.test_trace";
export declare const ATTR: {
    readonly OTEL_SERVICE_NAME: "service.name";
    readonly OTEL_SERVICE_VERSION: "service.version";
    readonly INSTANCE_ID: 'n8n.instance.id';
    readonly INSTANCE_ROLE: 'n8n.instance.role';
    readonly IS_TEST_TRACE: 'n8n.test';
    readonly PROJECT_ID: 'n8n.project.id';
    readonly WORKFLOW_ID: 'n8n.workflow.id';
    readonly WORKFLOW_VERSION_ID: 'n8n.workflow.version_id';
    readonly WORKFLOW_NAME: 'n8n.workflow.name';
    readonly WORKFLOW_NODE_COUNT: 'n8n.workflow.node_count';
    readonly WORKFLOW_CUSTOM_PREFIX: 'n8n.workflow.custom.';
    readonly EXECUTION_ID: 'n8n.execution.id';
    readonly EXECUTION_MODE: 'n8n.execution.mode';
    readonly EXECUTION_STATUS: 'n8n.execution.status';
    readonly EXECUTION_IS_RETRY: 'n8n.execution.is_retry';
    readonly EXECUTION_RETRY_OF: 'n8n.execution.retry_of';
    readonly EXECUTION_ERROR_TYPE: 'n8n.execution.error_type';
    readonly NODE_ID: 'n8n.node.id';
    readonly NODE_NAME: 'n8n.node.name';
    readonly NODE_TYPE: 'n8n.node.type';
    readonly NODE_TYPE_VERSION: 'n8n.node.type_version';
    readonly NODE_ITEMS_INPUT: 'n8n.node.items.input';
    readonly NODE_ITEMS_OUTPUT: 'n8n.node.items.output';
    readonly NODE_TERMINATION_REASON: 'n8n.node.termination_reason';
    readonly PROJECT_CUSTOM_PREFIX: 'n8n.project.custom.';
    readonly NODE_CUSTOM_PREFIX: 'n8n.node.custom.';
    readonly CONTINUATION_REASON: 'n8n.continuation.reason';
};