api: Ignore ClassCastExceptions for hard-coded providers #9174
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This was observed in the Bazel/Blaze build where io.grpc.util is a separate target from the rest of core. During the build of a library SecretRoundRobinLoadBalancerProvider was not on the classpath, and the library was later included into a binary using grpc-core from Maven Central which includes SecretRoundRobinLoadBalancerProvider. ``` java.util.ServiceConfigurationError: Provider io.grpc.util.SecretRoundRobinLoadBalancerProvider$Provider could not be instantiated java.lang.ClassCastException: class io.grpc.util.SecretRoundRobinLoadBalancerProvider$Provider cannot be cast to some.app.aaa.aab ```
sergiitk approved these changes May 16, 2022
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This was observed in the Bazel/Blaze build where io.grpc.util is a
separate target from the rest of core. During the build of a library
SecretRoundRobinLoadBalancerProvider was not on the classpath, and the
library was later included into a binary using grpc-core from Maven
Central which includes SecretRoundRobinLoadBalancerProvider.
CC @YifeiZhuang