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Add exponential backoff to bridge Artemis reconnection

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This commit is contained in:
Matthew Nesbit 2018-05-16 14:08:12 +01:00
parent ca89854493
commit 0b4e3ea5c7
4 changed files with 13 additions and 5 deletions
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6
bridge/src/main/kotlin/net/corda/bridge/services/api/BridgeConfiguration.kt
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@ -110,8 +110,10 @@ interface BridgeConfiguration : NodeSSLConfiguration {
val haConfig: BridgeHAConfig?
val networkParametersPath: Path
val enableAMQPPacketTrace: Boolean
// Reconnect to artemis after [artemisReconnectionInterval] ms the default value is 5000 ms.
val artemisReconnectionInterval: Int
// Initial reconnect interval for link to artemis after [artemisReconnectionIntervalMin] ms the default value is 5000 ms.
val artemisReconnectionIntervalMin: Int
// Slowest Artemis reconnect interval after exponential backoff applied. The default value is 60000 ms.
val artemisReconnectionIntervalMax: Int
// The period to wait for clean shutdown of remote components
// e.g links to the Float Outer, or Artemis sessions, before the process continues shutting down anyway.
// Default value is 1000 ms.

6
bridge/src/main/kotlin/net/corda/bridge/services/artemis/BridgeArtemisConnectionServiceImpl.kt
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@ -26,6 +26,7 @@ import org.apache.activemq.artemis.api.core.client.FailoverEventType
import org.apache.activemq.artemis.api.core.client.ServerLocator
import org.apache.activemq.artemis.core.remoting.impl.netty.TransportConstants
import rx.Subscription
import java.lang.Long.min
import java.util.concurrent.CountDownLatch
class BridgeArtemisConnectionServiceImpl(val conf: BridgeConfiguration,
@ -121,6 +122,7 @@ class BridgeArtemisConnectionServiceImpl(val conf: BridgeConfiguration,
private fun artemisReconnectionLoop() {
var tcpIndex = 0
var reconnectInterval = conf.artemisReconnectionIntervalMin.toLong()
while (state.locked { running }) {
val locator = state.locked { locator }
if (locator == null) {
@ -154,6 +156,7 @@ class BridgeArtemisConnectionServiceImpl(val conf: BridgeConfiguration,
log.info("Session created")
val newProducer = newSession.createProducer()
state.locked {
reconnectInterval = conf.artemisReconnectionIntervalMin.toLong()
started = ArtemisMessagingClient.Started(locator, newSessionFactory, newSession, newProducer)
}
stateHelper.active = true
@ -174,10 +177,11 @@ class BridgeArtemisConnectionServiceImpl(val conf: BridgeConfiguration,
try {
// Sleep for a short while before attempting reconnect
Thread.sleep(conf.artemisReconnectionInterval.toLong())
Thread.sleep(reconnectInterval)
} catch (ex: InterruptedException) {
// ignore
}
reconnectInterval = min(2L * reconnectInterval, conf.artemisReconnectionIntervalMax.toLong())
}
log.info("Ended Artemis Connector Thread")
}

3
bridge/src/main/kotlin/net/corda/bridge/services/config/BridgeConfigurationImpl.kt
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@ -69,7 +69,8 @@ data class BridgeConfigurationImpl(
override val floatOuterConfig: FloatOuterConfigurationImpl?,
override val haConfig: BridgeHAConfigImpl?,
override val enableAMQPPacketTrace: Boolean,
override val artemisReconnectionInterval: Int = 5000,
override val artemisReconnectionIntervalMin: Int = 5000,
override val artemisReconnectionIntervalMax: Int = 60000,
override val politeShutdownPeriod: Int = 1000,
override val whitelistedHeaders: List<String> = ArtemisMessagingComponent.Companion.P2PMessagingHeaders.whitelistedHeaders.toList()
) : BridgeConfiguration {

3
bridge/src/main/resources/bridgedefault.conf
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@ -10,6 +10,7 @@
keyStorePassword = "cordacadevpass"
trustStorePassword = "trustpass"
enableAMQPPacketTrace = false
artemisReconnectionInterval = 5000
artemisReconnectionIntervalMin = 5000
artemisReconnectionIntervalMax = 60000
politeShutdownPeriod = 1000
crlCheckSoftFail = true