Struct SloTracker 

pub struct SloTracker { /* private fields */ }

SLO tracker for workspace index operations.

Tracks latency and success/failure for all operation types, providing SLO compliance monitoring and reporting.

Implementations

impl SloTracker

pub fn new(config: SloConfig) -> SloTracker

Create a new SLO tracker with the given configuration.

Arguments

• config - SLO configuration

Returns

A new SLO tracker instance.

Examples

use perl_workspace::slo::{SloConfig, SloTracker};

let config = SloConfig::default();
let tracker = SloTracker::new(config);

pub fn start_operation(&self, _operation_type: OperationType) -> Instant

Start tracking an operation.

Returns an Instant to pass to Self::record_operation_type. The operation_type parameter is accepted for call-site readability but is not encoded in the returned timestamp — always pair with record_operation_type using the same type.

Examples

use perl_workspace::slo::{OperationResult, OperationType, SloTracker};

let tracker = SloTracker::default();
let start = tracker.start_operation(OperationType::DefinitionLookup);
// ... perform operation ...
tracker.record_operation_type(OperationType::DefinitionLookup, start, OperationResult::Success);

pub fn record_operation(&self, start: Instant, result: OperationResult)

👎Deprecated since 0.13.0:

records to every operation-type tracker at once — use record_operation_type instead

Record the completion of an operation.

Deprecation

This method records the duration to every operation-type tracker simultaneously, which pollutes all per-type statistics. Use Self::record_operation_type instead to target the correct tracker.

Examples

use perl_workspace::slo::{SloTracker, OperationType, OperationResult};

let tracker = SloTracker::default();
let start = tracker.start_operation(OperationType::DefinitionLookup);
// ... perform operation ...
// Prefer: tracker.record_operation_type(OperationType::DefinitionLookup, start, OperationResult::Success);
#[allow(deprecated)]
tracker.record_operation(start, OperationResult::Success);

pub fn record_operation_type( &self, operation_type: OperationType, start: Instant, result: OperationResult, )

Record the completion of a specific operation type.

Arguments

• operation_type - Type of operation
• start - Timestamp returned from start_operation
• result - Operation result

Examples

use perl_workspace::slo::{SloTracker, OperationType, OperationResult};

let tracker = SloTracker::default();
let start = tracker.start_operation(OperationType::DefinitionLookup);
// ... perform operation ...
tracker.record_operation_type(OperationType::DefinitionLookup, start, OperationResult::Success);

pub fn statistics(&self, operation_type: OperationType) -> SloStatistics

Get SLO statistics for a specific operation type.

Arguments

• operation_type - Type of operation

Returns

SLO statistics for the operation type.

Examples

use perl_workspace::slo::{SloTracker, OperationType};

let tracker = SloTracker::default();
let stats = tracker.statistics(OperationType::DefinitionLookup);

pub fn all_statistics(&self) -> HashMap<OperationType, SloStatistics>

Get SLO statistics for all operation types.

Returns

A map of operation type to SLO statistics.

Examples

use perl_workspace::slo::SloTracker;

let tracker = SloTracker::default();
let all_stats = tracker.all_statistics();

pub fn all_slos_met(&self) -> bool

Check if all SLOs are being met.

Returns

true if all operation types are meeting their SLOs, false otherwise.

Examples

use perl_workspace::slo::SloTracker;

let tracker = SloTracker::default();
let all_met = tracker.all_slos_met();

pub fn sample_count(&self, operation_type: OperationType) -> usize

Return the number of samples currently in the window for operation_type.

Useful for testing and monitoring — confirms that samples are being recorded without computing full percentile statistics.

Examples

use perl_workspace::slo::{OperationResult, OperationType, SloTracker};

let tracker = SloTracker::default();
assert_eq!(tracker.sample_count(OperationType::DefinitionLookup), 0);
let start = tracker.start_operation(OperationType::DefinitionLookup);
tracker.record_operation_type(OperationType::DefinitionLookup, start, OperationResult::Success);
assert_eq!(tracker.sample_count(OperationType::DefinitionLookup), 1);

pub fn config(&self) -> &SloConfig

Get the SLO configuration.

Returns

The SLO configuration.

pub fn reset(&self)

Reset all statistics.

Examples

use perl_workspace::slo::SloTracker;

let tracker = SloTracker::default();
tracker.reset();

Trait Implementations

impl Default for SloTracker

fn default() -> SloTracker

Returns the “default value” for a type.