all: cleanup - errorprone, unused

benchmarks/src/main/java/io/grpc/benchmarks/driver/LoadServer.java

@@ -93,7 +93,7 @@ final class LoadServer {
           new ByteBufOutputMarshaller(),
           new ByteBufOutputMarshaller());
 
-  private static final Logger LOG = Logger.getLogger(LoadServer.class.getName());
+  private static final Logger log = Logger.getLogger(LoadServer.class.getName());
 
   private final Server server;
   private final BenchmarkServiceImpl benchmarkService;
@@ -105,7 +105,7 @@ final class LoadServer {
   private long lastMarkCpuTime;
 
   LoadServer(Control.ServerConfig config) throws Exception {
-    LOG.log(Level.INFO, "Server Config \n" + config.toString());
+    log.log(Level.INFO, "Server Config \n" + config.toString());
     port = config.getPort() ==  0 ? Utils.pickUnusedPort() : config.getPort();
     ServerBuilder<?> serverBuilder = ServerBuilder.forPort(port);
     int asyncThreads = config.getAsyncServerThreads() == 0

core/src/main/java/io/grpc/ManagedChannelProvider.java

@@ -110,7 +110,7 @@ public abstract class ManagedChannelProvider {
   @VisibleForTesting
   static ManagedChannelProvider create(Class<?> rawClass) {
     try {
-      return rawClass.asSubclass(ManagedChannelProvider.class).newInstance();
+      return rawClass.asSubclass(ManagedChannelProvider.class).getConstructor().newInstance();
     } catch (Throwable t) {
       throw new ServiceConfigurationError(
           "Provider " + rawClass.getName() + " could not be instantiated: " + t, t);

core/src/main/java/io/grpc/NameResolverProvider.java

@@ -113,7 +113,7 @@ public abstract class NameResolverProvider extends NameResolver.Factory {
   @VisibleForTesting
   static NameResolverProvider create(Class<?> rawClass) {
     try {
-      return rawClass.asSubclass(NameResolverProvider.class).newInstance();
+      return rawClass.asSubclass(NameResolverProvider.class).getConstructor().newInstance();
     } catch (Throwable t) {
       throw new ServiceConfigurationError(
           "Provider " + rawClass.getName() + " could not be instantiated: " + t, t);

core/src/main/java/io/grpc/Status.java

@@ -635,7 +635,7 @@ public final class Status {
     public String parseAsciiString(byte[] value) {
       for (int i = 0; i < value.length; i++) {
         byte b = value[i];
-        if (b < ' ' || b >= '~' || b == '%' && i + 2 < value.length) {
+        if (b < ' ' || b >= '~' || (b == '%' && i + 2 < value.length)) {
           return parseAsciiStringSlow(value);
         }
       }

core/src/main/java/io/grpc/internal/CompositeReadableBuffer.java

@@ -215,7 +215,7 @@ public class CompositeReadableBuffer extends AbstractReadableBuffer {
    * A simple read operation to perform on a single {@link ReadableBuffer}. All state management for
    * the buffers is done by {@link CompositeReadableBuffer#execute(ReadOperation, int)}.
    */
-  private abstract class ReadOperation {
+  private abstract static class ReadOperation {
     /**
      * Only used by {@link CompositeReadableBuffer#readUnsignedByte()}.
      */

core/src/main/java/io/grpc/internal/ServerImpl.java

@@ -368,7 +368,7 @@ public final class ServerImpl extends io.grpc.Server {
       final StatsTraceContext statsTraceCtx = Preconditions.checkNotNull(
           stream.statsTraceContext(), "statsTraceCtx not present from stream");
 
-      final Context.CancellableContext context = createContext(stream, headers, statsTraceCtx);
+      final Context.CancellableContext context = createContext(stream, headers);
       final Executor wrappedExecutor;
       // This is a performance optimization that avoids the synchronization and queuing overhead
       // that comes with SerializingExecutor.
@@ -421,7 +421,7 @@ public final class ServerImpl extends io.grpc.Server {
     }
 
     private Context.CancellableContext createContext(
-        final ServerStream stream, Metadata headers, StatsTraceContext statsTraceCtx) {
+        final ServerStream stream, Metadata headers) {
       Long timeoutNanos = headers.get(TIMEOUT_KEY);
 
       // TODO(zhangkun83): attach the CensusContext from StatsTraceContext to baseContext

core/src/test/java/io/grpc/ResolvedServerInfoTest.java

@@ -32,8 +32,8 @@
 package io.grpc;
 
 import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertNotEquals;
+import static org.junit.Assert.assertNotSame;
 import static org.junit.Assert.fail;
 
 import org.junit.Test;
@@ -79,8 +79,8 @@ public class ResolvedServerInfoTest {
         Attributes.newBuilder().set(FOO, "bar").build());
 
     // sanity checks that they're not same instances
-    assertFalse(server1.getAddress() == server2.getAddress());
+    assertNotSame(server1.getAddress(), server2.getAddress());
-    assertFalse(server1.getAttributes() == server2.getAttributes());
+    assertNotSame(server1.getAttributes(), server2.getAttributes());
 
     assertEquals(server1, server2);
     assertEquals(server1.hashCode(), server2.hashCode()); // hash code must be consistent

netty/src/main/java/io/grpc/netty/NettyServerHandler.java

@@ -421,17 +421,6 @@ class NettyServerHandler extends AbstractNettyHandler {
     return path.subSequence(1, path.length()).toString();
   }
 
-  private static void checkHeader(int streamId,
-                                  Http2Headers headers,
-                                  CharSequence header,
-                                  CharSequence expectedValue) throws Http2Exception {
-    if (!expectedValue.equals(headers.get(header))) {
-      throw Http2Exception.streamError(streamId, Http2Error.REFUSED_STREAM,
-          "Header '%s'='%s', while '%s' is expected", header, headers.get(header), expectedValue);
-    }
-  }
-
-
   /**
    * Returns the server stream associated to the given HTTP/2 stream object.
    */

testing/src/main/java/io/grpc/internal/testing/AbstractTransportTest.java

@@ -1150,7 +1150,6 @@ public abstract class AbstractTransportTest {
   private static class MockServerTransportListener implements ServerTransportListener {
     public final ServerTransport transport;
     public final BlockingQueue<StreamCreation> streams = new LinkedBlockingQueue<StreamCreation>();
-    private final SettableFuture<?> ready = SettableFuture.create();
     private final SettableFuture<?> terminated = SettableFuture.create();
 
     public MockServerTransportListener(ServerTransport transport) {