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Added information about backup controller marker transaction state #128

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merged 1 commit into from
Feb 9, 2024
Merged

Added information about backup controller marker transaction state #128

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15 changes: 12 additions & 3 deletions environment/src/main/kotlin/jetbrains/exodus/env/management/BackupController.kt
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Original file line number Diff line number Diff line change
Expand Up @@ -19,15 +19,17 @@ import jetbrains.exodus.env.Environment
import jetbrains.exodus.env.EnvironmentImpl
import jetbrains.exodus.env.Transaction
import jetbrains.exodus.management.MBeanBase
import mu.KLogging
import java.util.concurrent.locks.ReentrantLock
import kotlin.concurrent.withLock

class BackupController(private val env: EnvironmentImpl) : MBeanBase(getObjectName(env)),
BackupControllerMBean {

private var backupTransaction: Transaction? = null
private val backupTransactionLock = ReentrantLock()

override fun prepareBackup() {
override fun prepareBackup() {
backupTransactionLock.lock()
try {
if (backupTransaction != null) {
Expand All @@ -51,11 +53,18 @@ class BackupController(private val env: EnvironmentImpl) : MBeanBase(getObjectNa
backupTransaction!!.abort()
backupTransaction = null
env.finishBackup()
} catch (e: Throwable) {
logger.error("Failed to finish backup on environment ${env.location}", e)
throw e
} finally {
backupTransactionLock.unlock()
}
}

override val backupInProgress get() = backupTransactionLock.withLock {
backupTransaction != null
}

override fun close() {
backupTransactionLock.lock()
try {
Expand All @@ -70,8 +79,8 @@ class BackupController(private val env: EnvironmentImpl) : MBeanBase(getObjectNa
super.close()
}

companion object {
companion object: KLogging() {
internal fun getObjectName(env: Environment) =
"$BACKUP_CONTROLLER_NAME_PREFIX, location=${escapeLocation(env.location)}"
}
}
}
4 changes: 3 additions & 1 deletion environment/src/main/kotlin/jetbrains/exodus/env/management/BackupControllerMBean.kt
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Expand Up @@ -20,4 +20,6 @@ const val BACKUP_CONTROLLER_NAME_PREFIX = "jetbrains.exodus.env: type=BackupCont
interface BackupControllerMBean {
fun prepareBackup()
fun finishBackup()
}

val backupInProgress: Boolean
}
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