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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,17 @@ | ||
| package streams.utils | ||
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| import kotlinx.coroutines.delay | ||
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| suspend fun <T> retryForException(exceptions: Array<Class<out Throwable>>, retries: Int, delayTime: Long, action: () -> T): T { | ||
| return try { | ||
| action() | ||
| } catch (e: Exception) { | ||
| val isInstance = exceptions.any { it.isInstance(e) } | ||
| if (isInstance && retries > 0) { | ||
| delay(delayTime) | ||
| retryForException(exceptions = exceptions, retries = retries - 1, delayTime = delayTime, action = action) | ||
| } else { | ||
| throw e | ||
| } | ||
| } | ||
| } |
63 changes: 63 additions & 0 deletions
63
common/src/test/kotlin/streams/utils/CoroutineUtilsTest.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,63 @@ | ||
| package streams.utils | ||
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| import kotlinx.coroutines.runBlocking | ||
| import org.junit.Test | ||
| import java.io.IOException | ||
| import java.lang.ClassCastException | ||
| import kotlin.test.assertEquals | ||
| import kotlin.test.assertTrue | ||
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| class CoroutineUtilsTest { | ||
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| @Test | ||
| fun `should success after retry for known exception`() = runBlocking { | ||
| var count = 0 | ||
| var excuted = false | ||
| retryForException<Unit>(exceptions = arrayOf(RuntimeException::class.java), | ||
| retries = 4, delayTime = 100) { | ||
| if (count < 2) { | ||
| ++count | ||
| throw RuntimeException() | ||
| } | ||
| excuted = true | ||
| } | ||
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| assertEquals(2, count) | ||
| assertTrue { excuted } | ||
| } | ||
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| @Test(expected = RuntimeException::class) | ||
| fun `should fail after retry for known exception`() { | ||
| var retries = 3 | ||
| runBlocking { | ||
| retryForException<Unit>(exceptions = arrayOf(RuntimeException::class.java), | ||
| retries = 3, delayTime = 100) { | ||
| if (retries >= 0) { | ||
| --retries | ||
| throw RuntimeException() | ||
| } | ||
| } | ||
| } | ||
| } | ||
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| @Test | ||
| fun `should fail fast unknown exception`() { | ||
| var iteration = 0 | ||
| var isIOException = false | ||
| try { | ||
| runBlocking { | ||
| retryForException<Unit>(exceptions = arrayOf(RuntimeException::class.java), | ||
| retries = 3, delayTime = 100) { | ||
| if (iteration >= 0) { | ||
| ++iteration | ||
| throw IOException() | ||
| } | ||
| } | ||
| } | ||
| } catch (e: Exception) { | ||
| isIOException = e is IOException | ||
| } | ||
| assertTrue { isIOException } | ||
| assertEquals(1, iteration) | ||
| } | ||
| } |
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2 changes: 1 addition & 1 deletion
2
...eams/kafka/connect/sink/PropertiesUtil.kt → ...ams/kafka/connect/utils/PropertiesUtil.kt
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