Package io.trino.plugin.prometheus

Class PrometheusSplitManager

java.lang.Object

io.trino.plugin.prometheus.PrometheusSplitManager

All Implemented Interfaces:

ConnectorSplitManager

public class PrometheusSplitManager
extends Object
implements ConnectorSplitManager

Constructor Summary

Constructors

Constructor	Description
PrometheusSplitManager(PrometheusClient prometheusClient, PrometheusClock prometheusClock, PrometheusConnectorConfig config)

Method Summary

Modifier and Type	Method	Description
protected static Optional<PrometheusPredicateTimeInfo>	determinePredicateTimes(TupleDomain<ColumnHandle> predicate)
protected static List<String>	generateTimesForSplits(Instant defaultUpperBound, io.airlift.units.Duration maxQueryRangeDurationRequested, io.airlift.units.Duration queryChunkSizeDurationRequested, PrometheusTableHandle tableHandle)	Utility method to get the end times in decimal seconds that divide up the query into chunks The times will be used in queries to Prometheus like: `http://localhost:9090/api/v1/query?query=up[21d]&time=1568229904.000"` ** NOTE: Prometheus instant query wants the duration and end time specified.
ConnectorSplitSource	getSplits(ConnectorTransactionHandle transaction, ConnectorSession session, ConnectorTableHandle connectorTableHandle, DynamicFilter dynamicFilter, Constraint constraint)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface io.trino.spi.connector.ConnectorSplitManager

getSplits

Constructor Details

PrometheusSplitManager

@Inject
public PrometheusSplitManager(PrometheusClient prometheusClient,
 PrometheusClock prometheusClock,
 PrometheusConnectorConfig config)

Method Details

getSplits

public ConnectorSplitSource getSplits(ConnectorTransactionHandle transaction,
 ConnectorSession session,
 ConnectorTableHandle connectorTableHandle,
 DynamicFilter dynamicFilter,
 Constraint constraint)

Specified by:

getSplits in interface ConnectorSplitManager

generateTimesForSplits

protected static List<String> generateTimesForSplits(Instant defaultUpperBound,
 io.airlift.units.Duration maxQueryRangeDurationRequested,
 io.airlift.units.Duration queryChunkSizeDurationRequested,
 PrometheusTableHandle tableHandle)

Utility method to get the end times in decimal seconds that divide up the query into chunks The times will be used in queries to Prometheus like: `http://localhost:9090/api/v1/query?query=up[21d]&time=1568229904.000"` ** NOTE: Prometheus instant query wants the duration and end time specified. We use now() for the defaultUpperBound when none is specified, for instance, from predicate push down

Returns:

list of end times as decimal epoch seconds, like ["1568053244.143", "1568926595.321"]

determinePredicateTimes

protected static Optional<PrometheusPredicateTimeInfo> determinePredicateTimes(TupleDomain<ColumnHandle> predicate)