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Fixed intermittent stack serialization issue with persistent scheduler.

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Improved exception reporting when fiber serialization fails or other internal Quasar error to help with future Kryo errors when checkpointing.
This commit is contained in:
rick.parker 2016-10-18 17:05:10 +01:00
parent 6a20f32a7a
commit 8a3027ffd6
2 changed files with 15 additions and 6 deletions
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19
node/src/main/kotlin/com/r3corda/node/services/events/NodeSchedulerService.kt
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@ -4,6 +4,7 @@ import co.paralleluniverse.fibers.Suspendable
import com.google.common.util.concurrent.SettableFuture
import com.r3corda.core.ThreadBox
import com.r3corda.core.contracts.SchedulableState
import com.r3corda.core.contracts.ScheduledActivity
import com.r3corda.core.contracts.ScheduledStateRef
import com.r3corda.core.contracts.StateRef
import com.r3corda.core.node.services.SchedulerService
@ -167,17 +168,27 @@ class NodeSchedulerService(private val database: Database,
override fun call(): Unit {
progressTracker.currentStep = RUNNING
// Ensure we are still scheduled.
val scheduledLogic: ProtocolLogic<*>? = getScheduledLogic()
if(scheduledLogic != null) {
subProtocol(scheduledLogic)
}
}
private fun getScheduledaActivity(): ScheduledActivity? {
val txState = serviceHub.loadState(scheduledState.ref)
val state = txState.data as SchedulableState
val scheduledActivity = try {
return try {
// This can throw as running contract code.
state.nextScheduledActivity(scheduledState.ref, scheduler.protocolLogicRefFactory)
} catch(e: Exception) {
logger.error("Attempt to run scheduled state $scheduledState resulted in error.", e)
null
}
}
// Ensure we are still scheduled.
private fun getScheduledLogic(): ProtocolLogic<*>? {
val scheduledActivity = getScheduledaActivity()
var scheduledLogic: ProtocolLogic<*>? = null
scheduler.mutex.locked {
// need to remove us from those scheduled, but only if we are still next
@ -206,9 +217,7 @@ class NodeSchedulerService(private val database: Database,
recomputeEarliest()
scheduler.rescheduleWakeUp()
}
if(scheduledLogic != null) {
subProtocol(scheduledLogic!!)
}
return scheduledLogic
}
}
}

2
node/src/main/kotlin/com/r3corda/node/services/statemachine/ProtocolStateMachineImpl.kt
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@ -240,7 +240,7 @@ class ProtocolStateMachineImpl<R>(override val id: StateMachineRunId,
actionOnSuspend(ioRequest)
} catch (t: Throwable) {
// Do not throw exception again - Quasar completely bins it.
logger.warn("Captured exception which was swallowed by Quasar", t)
logger.warn("Captured exception which was swallowed by Quasar for $logic at ${fiber.stackTrace.toList().joinToString("\n")}", t)
// TODO When error handling is introduced, look into whether we should be deleting the checkpoint and
// completing the Future
processException(t)