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Handle batches of commands in sharded circuit breakers

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This commit is contained in:
Jon Chambers
2024-11-05 17:23:01 -05:00
committed by Jon Chambers
parent ca7e7c288e
commit 7ca7fe7c13
2 changed files with 96 additions and 32 deletions
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67
service/src/test/java/org/whispersystems/textsecuregcm/redis/LettuceShardCircuitBreakerTest.java
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@@ -44,6 +44,7 @@ import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.MethodSource;
import org.junit.jupiter.params.provider.ValueSource;
import org.whispersystems.textsecuregcm.configuration.CircuitBreakerConfiguration;
import reactor.core.publisher.Flux;
import reactor.core.scheduler.Schedulers;
@@ -103,8 +104,8 @@ class LettuceShardCircuitBreakerTest {
}
@ParameterizedTest
@MethodSource
void testHandlerWriteBreakerClosed(@Nullable final Throwable t) throws Exception {
@ValueSource(booleans = {true, false})
void testHandlerWriteBreakerClosed(final boolean completeExceptionally) throws Exception {
final CircuitBreaker breaker = mock(CircuitBreaker.class);
channelCircuitBreakerHandler.breaker = breaker;
@@ -116,9 +117,11 @@ class LettuceShardCircuitBreakerTest {
verify(breaker).acquirePermission();
if (t != null) {
command.completeExceptionally(t);
verify(breaker).onError(anyLong(), eq(TimeUnit.NANOSECONDS), eq(t));
if (completeExceptionally) {
final Throwable throwable = new IOException("timeout");
command.completeExceptionally(throwable);
verify(breaker).onError(anyLong(), eq(TimeUnit.NANOSECONDS), eq(throwable));
} else {
command.complete("PONG");
verify(breaker).onSuccess(anyLong(), eq(TimeUnit.NANOSECONDS));
@@ -128,12 +131,36 @@ class LettuceShardCircuitBreakerTest {
verify(channelHandlerContext).write(command, channelPromise);
}
static List<Throwable> testHandlerWriteBreakerClosed() {
final List<Throwable> errors = new ArrayList<>();
errors.add(null);
errors.add(new IOException("timeout"));
@ParameterizedTest
@ValueSource(booleans = {true, false})
void testHandlerWriteBatchBreakerClosed(final boolean completeExceptionally) throws Exception {
final CircuitBreaker breaker = mock(CircuitBreaker.class);
channelCircuitBreakerHandler.breaker = breaker;
return errors;
final AsyncCommand<String, String, String> firstCommand = new AsyncCommand<>(
new Command<>(CommandType.PING, new StatusOutput<>(StringCodec.ASCII)));
final AsyncCommand<String, String, String> secondCommand = new AsyncCommand<>(
new Command<>(CommandType.PING, new StatusOutput<>(StringCodec.ASCII)));
final ChannelHandlerContext channelHandlerContext = mock(ChannelHandlerContext.class);
final ChannelPromise channelPromise = mock(ChannelPromise.class);
channelCircuitBreakerHandler.write(channelHandlerContext, List.of(firstCommand, secondCommand), channelPromise);
verify(breaker).acquirePermission();
if (completeExceptionally) {
final Throwable throwable = new IOException("timeout");
firstCommand.completeExceptionally(throwable);
secondCommand.completeExceptionally(throwable);
verify(breaker).onError(anyLong(), eq(TimeUnit.NANOSECONDS), eq(throwable));
} else {
firstCommand.complete("PONG");
secondCommand.complete("PONG");
verify(breaker).onSuccess(anyLong(), eq(TimeUnit.NANOSECONDS));
}
// write should always be forwarded when the breaker is closed
verify(channelHandlerContext).write(List.of(firstCommand, secondCommand), channelPromise);
}
@Test
@@ -155,4 +182,24 @@ class LettuceShardCircuitBreakerTest {
verifyNoInteractions(channelHandlerContext);
}
@Test
void testHandlerWriteBatchBreakerOpen() throws Exception {
final CircuitBreaker breaker = mock(CircuitBreaker.class);
channelCircuitBreakerHandler.breaker = breaker;
final CallNotPermittedException callNotPermittedException = mock(CallNotPermittedException.class);
doThrow(callNotPermittedException).when(breaker).acquirePermission();
@SuppressWarnings("unchecked") final AsyncCommand<String, String, String> firstCommand = mock(AsyncCommand.class);
@SuppressWarnings("unchecked") final AsyncCommand<String, String, String> secondCommand = mock(AsyncCommand.class);
final ChannelHandlerContext channelHandlerContext = mock(ChannelHandlerContext.class);
final ChannelPromise channelPromise = mock(ChannelPromise.class);
channelCircuitBreakerHandler.write(channelHandlerContext, List.of(firstCommand, secondCommand), channelPromise);
verify(firstCommand).completeExceptionally(callNotPermittedException);
verify(secondCommand).completeExceptionally(callNotPermittedException);
verify(channelPromise).tryFailure(callNotPermittedException);
verifyNoInteractions(channelHandlerContext);
}
}