Spymemcached: be slightly mode defensive in instumentation
@@ -94,7 +94,7 @@ public final class MemcachedClientInstrumentation extends Instrumenter.Configura
@Advice.Enter final boolean shouldInjectListener,
@Advice.Origin final Method method,
@Advice.Return final OperationFuture future) {
- if (shouldInjectListener) {
+ if (shouldInjectListener && future != null) {
OperationCompletionListener listener =
new OperationCompletionListener(GlobalTracer.get(), method.getName());
future.addListener(listener);
@@ -115,7 +115,7 @@ public final class MemcachedClientInstrumentation extends Instrumenter.Configura
@Advice.Enter final boolean shouldInjectListener,
@Advice.Origin final Method method,
@Advice.Return final GetFuture future) {
- if (shouldInjectListener) {
+ if (shouldInjectListener && future != null) {
GetCompletionListener listener =
new GetCompletionListener(GlobalTracer.get(), method.getName());
future.addListener(listener);
@@ -136,7 +136,7 @@ public final class MemcachedClientInstrumentation extends Instrumenter.Configura
@Advice.Enter final boolean shouldInjectListener,
@Advice.Origin final Method method,
@Advice.Return final BulkFuture future) {
- if (shouldInjectListener) {
+ if (shouldInjectListener && future != null) {
BulkGetCompletionListener listener =
new BulkGetCompletionListener(GlobalTracer.get(), method.getName());
future.addListener(listener);
