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Internal: prevent injection of unannotated dynamic settings 

Dynamic settings has to be injected into constructor with either @ClusterDynamicSettings or @IndexDynamicSettings. If annotations are not specified an empty instance of Dynamic Settings is injected that can lead to difficult to discover errors such as #10614. This commit will make any attempt to inject unannotated dynamic settings to generate a giuce error.
This commit is contained in:
Igor Motov 2015-04-23 20:37:38 -04:00
parent 573cacab54
commit d2844e0210
1 changed files with 6 additions and 1 deletions
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7
src/main/java/org/elasticsearch/cluster/settings/ClusterDynamicSettingsModule.java
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@ -27,6 +27,7 @@ import org.elasticsearch.cluster.routing.allocation.allocator.BalancedShardsAllo
import org.elasticsearch.cluster.routing.allocation.decider.*;
import org.elasticsearch.cluster.service.InternalClusterService;
import org.elasticsearch.common.inject.AbstractModule;
import org.elasticsearch.common.inject.util.Providers;
import org.elasticsearch.discovery.DiscoverySettings;
import org.elasticsearch.discovery.zen.ZenDiscovery;
import org.elasticsearch.indices.breaker.HierarchyCircuitBreakerService;
@ -109,9 +110,13 @@ public class ClusterDynamicSettingsModule extends AbstractModule {
clusterDynamicSettings.addDynamicSetting(setting, validator);
}
@Override
protected void configure() {
bind(DynamicSettings.class).annotatedWith(ClusterDynamicSettings.class).toInstance(clusterDynamicSettings);
// Bind to null provider just in case somebody will forget to supply @ClusterDynamicSetting or @IndexDynamicSetting annotations
// This will cause any attempt to inject a unannotated DynamicSettings to fail with Guice error, instead of silently
// injecting an empty copy of dynamic settings
bind(DynamicSettings.class).toProvider(Providers.<DynamicSettings>of(null));
}
}