Class InMemoryMetricsHandler

In-memory metrics collector for testing and simple monitoring. Stores metrics in memory and provides query methods.

Implements

MetricsHandler

Index

Constructors

Methods

clear getAverageDuration getCounter getErrorRate getGauge getOperations getOperationsByType getSummary recordCounter recordGauge recordOperation

Constructors

constructor

new InMemoryMetricsHandler(
options?: { maxOperations?: number },
): InMemoryMetricsHandler
Parameters
- Optionaloptions: { maxOperations?: number }
Returns InMemoryMetricsHandler
- Defined in metrics.ts:209

Methods

clear

clear(): void
Clear all stored metrics

Returns void
- Defined in metrics.ts:336

getAverageDuration

getAverageDuration(operation: OperationType): number
Get average duration for an operation type
Parameters
- operation: OperationType
Returns number
- Defined in metrics.ts:254

getCounter

getCounter(name: string, labels?: Record<string, string>): number
Get current counter value
Parameters
- name: string
- Optionallabels: Record<string, string>
Returns number
- Defined in metrics.ts:285

getErrorRate

getErrorRate(operation: OperationType): number
Get error rate for an operation type
Parameters
- operation: OperationType
Returns number
- Defined in metrics.ts:265

getGauge

getGauge(name: string, labels?: Record<string, string>): number | undefined
Get current gauge value
Parameters
- name: string
- Optionallabels: Record<string, string>
Returns number | undefined
- Defined in metrics.ts:277

getOperations

getOperations(): readonly MetricEvent[]
Get all recorded operations

Returns readonly MetricEvent[]
- Defined in metrics.ts:240

getOperationsByType

getOperationsByType(operation: OperationType): MetricEvent[]
Get operations filtered by type
Parameters
- operation: OperationType
Returns MetricEvent[]
- Defined in metrics.ts:247

getSummary

getSummary(): {
    averageDurations: Record<string, number>;
    errorCount: number;
    operationCounts: Record<string, number>;
    successCount: number;
    totalOperations: number;
}
Get summary statistics

Returns {
    averageDurations: Record<string, number>;
    errorCount: number;
    operationCounts: Record<string, number>;
    successCount: number;
    totalOperations: number;
}
- Defined in metrics.ts:293

recordCounter

recordCounter(event: CounterEvent): void
Record a counter increment
Parameters
- event: CounterEvent
Returns void
Implementation of MetricsHandler.recordCounter
- Defined in metrics.ts:227

recordGauge

recordGauge(event: GaugeEvent): void
Record a gauge value
Parameters
- event: GaugeEvent
Returns void
Implementation of MetricsHandler.recordGauge
- Defined in metrics.ts:222

recordOperation

recordOperation(event: MetricEvent): void
Record a timed operation metric
Parameters
- event: MetricEvent
Returns void
Implementation of MetricsHandler.recordOperation
- Defined in metrics.ts:213