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

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id

Type: number

Statistic instance id

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requestRetryHistogram

Type: Array<number>

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

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statistics.reset()

Set the current statistic instance to pristine values

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statistics.calculate()

Calculate the current statistics

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statistics.startCapturing()

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

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statistics.stopCapturing()

Stops logging and remove event listeners, then persist

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statistics.persistState()

Persist internal state to the key value store

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statistics.toJSON()

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

Returns:

StatisticPersistedState | StatisticState

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