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core: Avoid unnecessary unchecked cast in DnsNameResolver

This commit is contained in:
Eric Anderson 2018-06-28 09:54:44 -07:00
parent b244988572
commit 3e67a5be75
1 changed files with 2 additions and 4 deletions
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6
core/src/main/java/io/grpc/internal/DnsNameResolver.java
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@ -515,15 +515,13 @@ final class DnsNameResolver extends NameResolver {
} }
@Nullable @Nullable
@SuppressWarnings("unchecked")
@VisibleForTesting @VisibleForTesting
static ResourceResolverFactory getResourceResolverFactory(ClassLoader loader) { static ResourceResolverFactory getResourceResolverFactory(ClassLoader loader) {
Class<? extends ResourceResolverFactory> jndiClazz; Class<? extends ResourceResolverFactory> jndiClazz;
try { try {
jndiClazz = jndiClazz =
(Class<? extends ResourceResolverFactory>) Class.forName("io.grpc.internal.JndiResourceResolverFactory", true, loader)
Class.forName("io.grpc.internal.JndiResourceResolverFactory", true, loader); .asSubclass(ResourceResolverFactory.class);
assert ResourceResolverFactory.class.isAssignableFrom(jndiClazz);
} catch (ClassNotFoundException e) { } catch (ClassNotFoundException e) {
logger.log(Level.FINE, "Unable to find JndiResourceResolverFactory, skipping.", e); logger.log(Level.FINE, "Unable to find JndiResourceResolverFactory, skipping.", e);
return null; return null;