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Version: 2.3

Statistics

The statistics class provides an interface to collecting and logging run statistics for requests.

All statistic information is saved on key value store under the key SDKCRAWLER_STATISTICS*, persists between migrations and abort/resurrect

Properties

state

Type: StatisticState

Current statistic state used for doing calculations on Statistics.calculate() calls


id

Type: number

Statistic instance id


requestRetryHistogram

Type: Array<number>

Contains the current retries histogram. Index 0 means 0 retries, index 2, 2 retries, and so on


statistics.reset()

Set the current statistic instance to pristine values


statistics.calculate()

Calculate the current statistics


statistics.startCapturing()

Initializes the key value store for persisting the statistics, displaying the current state in predefined intervals


statistics.stopCapturing()

Stops logging and remove event listeners, then persist


statistics.persistState()

Persist internal state to the key value store


statistics.toJSON()

Make this class serializable when called with JSON.stringify(statsInstance) directly or through keyValueStore.setValue('KEY', statsInstance)

Returns:

StatisticPersistedState | StatisticState