Sync load_balancer.proto to latest version.

grpclb/src/generated/main/java/io/grpc/grpclb/InitialLoadBalanceResponse.java

@@ -15,6 +15,7 @@ public  final class InitialLoadBalanceResponse extends
     super(builder);
   }
   private InitialLoadBalanceResponse() {
+    loadBalancerDelegate_ = "";
   }
 
   @java.lang.Override
@@ -42,13 +43,13 @@ public  final class InitialLoadBalanceResponse extends
             }
             break;
           }
-          case 18: {
+          case 10: {
             java.lang.String s = input.readStringRequireUtf8();
-            initialResponseTypeCase_ = 2;
+
-            initialResponseType_ = s;
+            loadBalancerDelegate_ = s;
             break;
           }
-          case 26: {
+          case 18: {
             com.google.protobuf.Duration.Builder subBuilder = null;
             if (clientStatsReportInterval_ != null) {
               subBuilder = clientStatsReportInterval_.toBuilder();
@@ -84,100 +85,55 @@ public  final class InitialLoadBalanceResponse extends
             io.grpc.grpclb.InitialLoadBalanceResponse.class, io.grpc.grpclb.InitialLoadBalanceResponse.Builder.class);
   }
 
-  private int initialResponseTypeCase_ = 0;
+  public static final int LOAD_BALANCER_DELEGATE_FIELD_NUMBER = 1;
-  private java.lang.Object initialResponseType_;
+  private volatile java.lang.Object loadBalancerDelegate_;
-  public enum InitialResponseTypeCase
-      implements com.google.protobuf.Internal.EnumLite {
-    LOAD_BALANCER_DELEGATE(2),
-    INITIALRESPONSETYPE_NOT_SET(0);
-    private final int value;
-    private InitialResponseTypeCase(int value) {
-      this.value = value;
-    }
-    /**
-     * @deprecated Use {@link #forNumber(int)} instead.
-     */
-    @java.lang.Deprecated
-    public static InitialResponseTypeCase valueOf(int value) {
-      return forNumber(value);
-    }
-
-    public static InitialResponseTypeCase forNumber(int value) {
-      switch (value) {
-        case 2: return LOAD_BALANCER_DELEGATE;
-        case 0: return INITIALRESPONSETYPE_NOT_SET;
-        default: return null;
-      }
-    }
-    public int getNumber() {
-      return this.value;
-    }
-  };
-
-  public InitialResponseTypeCase
-  getInitialResponseTypeCase() {
-    return InitialResponseTypeCase.forNumber(
-        initialResponseTypeCase_);
-  }
-
-  public static final int LOAD_BALANCER_DELEGATE_FIELD_NUMBER = 2;
   /**
    * <pre>
-   * This is an application layer redirect that indicates the client should
+   * This is an application layer redirect that indicates the client should use
-   * use the specified server for load balancing. When this field is set in
+   * the specified server for load balancing. When this field is non-empty in
    * the response, the client should open a separate connection to the
    * load_balancer_delegate and call the BalanceLoad method.
    * </pre>
    *
-   * <code>optional string load_balancer_delegate = 2;</code>
+   * <code>optional string load_balancer_delegate = 1;</code>
    */
   public java.lang.String getLoadBalancerDelegate() {
-    java.lang.Object ref = "";
+    java.lang.Object ref = loadBalancerDelegate_;
-    if (initialResponseTypeCase_ == 2) {
-      ref = initialResponseType_;
-    }
     if (ref instanceof java.lang.String) {
       return (java.lang.String) ref;
     } else {
       com.google.protobuf.ByteString bs = 
           (com.google.protobuf.ByteString) ref;
       java.lang.String s = bs.toStringUtf8();
-      if (initialResponseTypeCase_ == 2) {
+      loadBalancerDelegate_ = s;
-        initialResponseType_ = s;
-      }
       return s;
     }
   }
   /**
    * <pre>
-   * This is an application layer redirect that indicates the client should
+   * This is an application layer redirect that indicates the client should use
-   * use the specified server for load balancing. When this field is set in
+   * the specified server for load balancing. When this field is non-empty in
    * the response, the client should open a separate connection to the
    * load_balancer_delegate and call the BalanceLoad method.
    * </pre>
    *
-   * <code>optional string load_balancer_delegate = 2;</code>
+   * <code>optional string load_balancer_delegate = 1;</code>
    */
   public com.google.protobuf.ByteString
       getLoadBalancerDelegateBytes() {
-    java.lang.Object ref = "";
+    java.lang.Object ref = loadBalancerDelegate_;
-    if (initialResponseTypeCase_ == 2) {
-      ref = initialResponseType_;
-    }
     if (ref instanceof java.lang.String) {
       com.google.protobuf.ByteString b = 
           com.google.protobuf.ByteString.copyFromUtf8(
               (java.lang.String) ref);
-      if (initialResponseTypeCase_ == 2) {
+      loadBalancerDelegate_ = b;
-        initialResponseType_ = b;
-      }
       return b;
     } else {
       return (com.google.protobuf.ByteString) ref;
     }
   }
 
-  public static final int CLIENT_STATS_REPORT_INTERVAL_FIELD_NUMBER = 3;
+  public static final int CLIENT_STATS_REPORT_INTERVAL_FIELD_NUMBER = 2;
   private com.google.protobuf.Duration clientStatsReportInterval_;
   /**
    * <pre>
@@ -186,7 +142,7 @@ public  final class InitialLoadBalanceResponse extends
    * positive.
    * </pre>
    *
-   * <code>optional .google.protobuf.Duration client_stats_report_interval = 3;</code>
+   * <code>optional .google.protobuf.Duration client_stats_report_interval = 2;</code>
    */
   public boolean hasClientStatsReportInterval() {
     return clientStatsReportInterval_ != null;
@@ -198,7 +154,7 @@ public  final class InitialLoadBalanceResponse extends
    * positive.
    * </pre>
    *
-   * <code>optional .google.protobuf.Duration client_stats_report_interval = 3;</code>
+   * <code>optional .google.protobuf.Duration client_stats_report_interval = 2;</code>
    */
   public com.google.protobuf.Duration getClientStatsReportInterval() {
     return clientStatsReportInterval_ == null ? com.google.protobuf.Duration.getDefaultInstance() : clientStatsReportInterval_;
@@ -210,7 +166,7 @@ public  final class InitialLoadBalanceResponse extends
    * positive.
    * </pre>
    *
-   * <code>optional .google.protobuf.Duration client_stats_report_interval = 3;</code>
+   * <code>optional .google.protobuf.Duration client_stats_report_interval = 2;</code>
    */
   public com.google.protobuf.DurationOrBuilder getClientStatsReportIntervalOrBuilder() {
     return getClientStatsReportInterval();
@@ -228,11 +184,11 @@ public  final class InitialLoadBalanceResponse extends
 
   public void writeTo(com.google.protobuf.CodedOutputStream output)
                       throws java.io.IOException {
-    if (initialResponseTypeCase_ == 2) {
+    if (!getLoadBalancerDelegateBytes().isEmpty()) {
-      com.google.protobuf.GeneratedMessageV3.writeString(output, 2, initialResponseType_);
+      com.google.protobuf.GeneratedMessageV3.writeString(output, 1, loadBalancerDelegate_);
     }
     if (clientStatsReportInterval_ != null) {
-      output.writeMessage(3, getClientStatsReportInterval());
+      output.writeMessage(2, getClientStatsReportInterval());
     }
   }
 
@@ -241,12 +197,12 @@ public  final class InitialLoadBalanceResponse extends
     if (size != -1) return size;
 
     size = 0;
-    if (initialResponseTypeCase_ == 2) {
+    if (!getLoadBalancerDelegateBytes().isEmpty()) {
-      size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, initialResponseType_);
+      size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, loadBalancerDelegate_);
     }
     if (clientStatsReportInterval_ != null) {
       size += com.google.protobuf.CodedOutputStream
-        .computeMessageSize(3, getClientStatsReportInterval());
+        .computeMessageSize(2, getClientStatsReportInterval());
     }
     memoizedSize = size;
     return size;
@@ -264,22 +220,13 @@ public  final class InitialLoadBalanceResponse extends
     io.grpc.grpclb.InitialLoadBalanceResponse other = (io.grpc.grpclb.InitialLoadBalanceResponse) obj;
 
     boolean result = true;
+    result = result && getLoadBalancerDelegate()
+        .equals(other.getLoadBalancerDelegate());
     result = result && (hasClientStatsReportInterval() == other.hasClientStatsReportInterval());
     if (hasClientStatsReportInterval()) {
       result = result && getClientStatsReportInterval()
           .equals(other.getClientStatsReportInterval());
     }
-    result = result && getInitialResponseTypeCase().equals(
-        other.getInitialResponseTypeCase());
-    if (!result) return false;
-    switch (initialResponseTypeCase_) {
-      case 2:
-        result = result && getLoadBalancerDelegate()
-            .equals(other.getLoadBalancerDelegate());
-        break;
-      case 0:
-      default:
-    }
     return result;
   }
 
@@ -290,18 +237,12 @@ public  final class InitialLoadBalanceResponse extends
     }
     int hash = 41;
     hash = (19 * hash) + getDescriptorForType().hashCode();
+    hash = (37 * hash) + LOAD_BALANCER_DELEGATE_FIELD_NUMBER;
+    hash = (53 * hash) + getLoadBalancerDelegate().hashCode();
     if (hasClientStatsReportInterval()) {
       hash = (37 * hash) + CLIENT_STATS_REPORT_INTERVAL_FIELD_NUMBER;
       hash = (53 * hash) + getClientStatsReportInterval().hashCode();
     }
-    switch (initialResponseTypeCase_) {
-      case 2:
-        hash = (37 * hash) + LOAD_BALANCER_DELEGATE_FIELD_NUMBER;
-        hash = (53 * hash) + getLoadBalancerDelegate().hashCode();
-        break;
-      case 0:
-      default:
-    }
     hash = (29 * hash) + unknownFields.hashCode();
     memoizedHashCode = hash;
     return hash;
@@ -420,14 +361,14 @@ public  final class InitialLoadBalanceResponse extends
     }
     public Builder clear() {
       super.clear();
+      loadBalancerDelegate_ = "";
+
       if (clientStatsReportIntervalBuilder_ == null) {
         clientStatsReportInterval_ = null;
       } else {
         clientStatsReportInterval_ = null;
         clientStatsReportIntervalBuilder_ = null;
       }
-      initialResponseTypeCase_ = 0;
-      initialResponseType_ = null;
       return this;
     }
 
@@ -450,15 +391,12 @@ public  final class InitialLoadBalanceResponse extends
 
     public io.grpc.grpclb.InitialLoadBalanceResponse buildPartial() {
       io.grpc.grpclb.InitialLoadBalanceResponse result = new io.grpc.grpclb.InitialLoadBalanceResponse(this);
-      if (initialResponseTypeCase_ == 2) {
+      result.loadBalancerDelegate_ = loadBalancerDelegate_;
-        result.initialResponseType_ = initialResponseType_;
-      }
       if (clientStatsReportIntervalBuilder_ == null) {
         result.clientStatsReportInterval_ = clientStatsReportInterval_;
       } else {
         result.clientStatsReportInterval_ = clientStatsReportIntervalBuilder_.build();
       }
-      result.initialResponseTypeCase_ = initialResponseTypeCase_;
       onBuilt();
       return result;
     }
@@ -500,20 +438,13 @@ public  final class InitialLoadBalanceResponse extends
 
     public Builder mergeFrom(io.grpc.grpclb.InitialLoadBalanceResponse other) {
       if (other == io.grpc.grpclb.InitialLoadBalanceResponse.getDefaultInstance()) return this;
+      if (!other.getLoadBalancerDelegate().isEmpty()) {
+        loadBalancerDelegate_ = other.loadBalancerDelegate_;
+        onChanged();
+      }
       if (other.hasClientStatsReportInterval()) {
         mergeClientStatsReportInterval(other.getClientStatsReportInterval());
       }
-      switch (other.getInitialResponseTypeCase()) {
-        case LOAD_BALANCER_DELEGATE: {
-          initialResponseTypeCase_ = 2;
-          initialResponseType_ = other.initialResponseType_;
-          onChanged();
-          break;
-        }
-        case INITIALRESPONSETYPE_NOT_SET: {
-          break;
-        }
-      }
       onChanged();
       return this;
     }
@@ -539,44 +470,25 @@ public  final class InitialLoadBalanceResponse extends
       }
       return this;
     }
-    private int initialResponseTypeCase_ = 0;
-    private java.lang.Object initialResponseType_;
-    public InitialResponseTypeCase
-        getInitialResponseTypeCase() {
-      return InitialResponseTypeCase.forNumber(
-          initialResponseTypeCase_);
-    }
-
-    public Builder clearInitialResponseType() {
-      initialResponseTypeCase_ = 0;
-      initialResponseType_ = null;
-      onChanged();
-      return this;
-    }
-
 
+    private java.lang.Object loadBalancerDelegate_ = "";
     /**
      * <pre>
-     * This is an application layer redirect that indicates the client should
+     * This is an application layer redirect that indicates the client should use
-     * use the specified server for load balancing. When this field is set in
+     * the specified server for load balancing. When this field is non-empty in
      * the response, the client should open a separate connection to the
      * load_balancer_delegate and call the BalanceLoad method.
      * </pre>
      *
-     * <code>optional string load_balancer_delegate = 2;</code>
+     * <code>optional string load_balancer_delegate = 1;</code>
      */
     public java.lang.String getLoadBalancerDelegate() {
-      java.lang.Object ref = "";
+      java.lang.Object ref = loadBalancerDelegate_;
-      if (initialResponseTypeCase_ == 2) {
-        ref = initialResponseType_;
-      }
       if (!(ref instanceof java.lang.String)) {
         com.google.protobuf.ByteString bs =
             (com.google.protobuf.ByteString) ref;
         java.lang.String s = bs.toStringUtf8();
-        if (initialResponseTypeCase_ == 2) {
+        loadBalancerDelegate_ = s;
-          initialResponseType_ = s;
-        }
         return s;
       } else {
         return (java.lang.String) ref;
@@ -584,27 +496,22 @@ public  final class InitialLoadBalanceResponse extends
     }
     /**
      * <pre>
-     * This is an application layer redirect that indicates the client should
+     * This is an application layer redirect that indicates the client should use
-     * use the specified server for load balancing. When this field is set in
+     * the specified server for load balancing. When this field is non-empty in
      * the response, the client should open a separate connection to the
      * load_balancer_delegate and call the BalanceLoad method.
      * </pre>
      *
-     * <code>optional string load_balancer_delegate = 2;</code>
+     * <code>optional string load_balancer_delegate = 1;</code>
      */
     public com.google.protobuf.ByteString
         getLoadBalancerDelegateBytes() {
-      java.lang.Object ref = "";
+      java.lang.Object ref = loadBalancerDelegate_;
-      if (initialResponseTypeCase_ == 2) {
-        ref = initialResponseType_;
-      }
       if (ref instanceof String) {
         com.google.protobuf.ByteString b = 
             com.google.protobuf.ByteString.copyFromUtf8(
                 (java.lang.String) ref);
-        if (initialResponseTypeCase_ == 2) {
+        loadBalancerDelegate_ = b;
-          initialResponseType_ = b;
-        }
         return b;
       } else {
         return (com.google.protobuf.ByteString) ref;
@@ -612,51 +519,49 @@ public  final class InitialLoadBalanceResponse extends
     }
     /**
      * <pre>
-     * This is an application layer redirect that indicates the client should
+     * This is an application layer redirect that indicates the client should use
-     * use the specified server for load balancing. When this field is set in
+     * the specified server for load balancing. When this field is non-empty in
      * the response, the client should open a separate connection to the
      * load_balancer_delegate and call the BalanceLoad method.
      * </pre>
      *
-     * <code>optional string load_balancer_delegate = 2;</code>
+     * <code>optional string load_balancer_delegate = 1;</code>
      */
     public Builder setLoadBalancerDelegate(
         java.lang.String value) {
       if (value == null) {
     throw new NullPointerException();
   }
-  initialResponseTypeCase_ = 2;
+  
-      initialResponseType_ = value;
+      loadBalancerDelegate_ = value;
       onChanged();
       return this;
     }
     /**
      * <pre>
-     * This is an application layer redirect that indicates the client should
+     * This is an application layer redirect that indicates the client should use
-     * use the specified server for load balancing. When this field is set in
+     * the specified server for load balancing. When this field is non-empty in
      * the response, the client should open a separate connection to the
      * load_balancer_delegate and call the BalanceLoad method.
      * </pre>
      *
-     * <code>optional string load_balancer_delegate = 2;</code>
+     * <code>optional string load_balancer_delegate = 1;</code>
      */
     public Builder clearLoadBalancerDelegate() {
-      if (initialResponseTypeCase_ == 2) {
+      
-        initialResponseTypeCase_ = 0;
+      loadBalancerDelegate_ = getDefaultInstance().getLoadBalancerDelegate();
-        initialResponseType_ = null;
+      onChanged();
-        onChanged();
-      }
       return this;
     }
     /**
      * <pre>
-     * This is an application layer redirect that indicates the client should
+     * This is an application layer redirect that indicates the client should use
-     * use the specified server for load balancing. When this field is set in
+     * the specified server for load balancing. When this field is non-empty in
      * the response, the client should open a separate connection to the
      * load_balancer_delegate and call the BalanceLoad method.
      * </pre>
      *
-     * <code>optional string load_balancer_delegate = 2;</code>
+     * <code>optional string load_balancer_delegate = 1;</code>
      */
     public Builder setLoadBalancerDelegateBytes(
         com.google.protobuf.ByteString value) {
@@ -664,8 +569,8 @@ public  final class InitialLoadBalanceResponse extends
     throw new NullPointerException();
   }
   checkByteStringIsUtf8(value);
-      initialResponseTypeCase_ = 2;
+      
-      initialResponseType_ = value;
+      loadBalancerDelegate_ = value;
       onChanged();
       return this;
     }
@@ -680,7 +585,7 @@ public  final class InitialLoadBalanceResponse extends
      * positive.
      * </pre>
      *
-     * <code>optional .google.protobuf.Duration client_stats_report_interval = 3;</code>
+     * <code>optional .google.protobuf.Duration client_stats_report_interval = 2;</code>
      */
     public boolean hasClientStatsReportInterval() {
       return clientStatsReportIntervalBuilder_ != null || clientStatsReportInterval_ != null;
@@ -692,7 +597,7 @@ public  final class InitialLoadBalanceResponse extends
      * positive.
      * </pre>
      *
-     * <code>optional .google.protobuf.Duration client_stats_report_interval = 3;</code>
+     * <code>optional .google.protobuf.Duration client_stats_report_interval = 2;</code>
      */
     public com.google.protobuf.Duration getClientStatsReportInterval() {
       if (clientStatsReportIntervalBuilder_ == null) {
@@ -708,7 +613,7 @@ public  final class InitialLoadBalanceResponse extends
      * positive.
      * </pre>
      *
-     * <code>optional .google.protobuf.Duration client_stats_report_interval = 3;</code>
+     * <code>optional .google.protobuf.Duration client_stats_report_interval = 2;</code>
      */
     public Builder setClientStatsReportInterval(com.google.protobuf.Duration value) {
       if (clientStatsReportIntervalBuilder_ == null) {
@@ -730,7 +635,7 @@ public  final class InitialLoadBalanceResponse extends
      * positive.
      * </pre>
      *
-     * <code>optional .google.protobuf.Duration client_stats_report_interval = 3;</code>
+     * <code>optional .google.protobuf.Duration client_stats_report_interval = 2;</code>
      */
     public Builder setClientStatsReportInterval(
         com.google.protobuf.Duration.Builder builderForValue) {
@@ -750,7 +655,7 @@ public  final class InitialLoadBalanceResponse extends
      * positive.
      * </pre>
      *
-     * <code>optional .google.protobuf.Duration client_stats_report_interval = 3;</code>
+     * <code>optional .google.protobuf.Duration client_stats_report_interval = 2;</code>
      */
     public Builder mergeClientStatsReportInterval(com.google.protobuf.Duration value) {
       if (clientStatsReportIntervalBuilder_ == null) {
@@ -774,7 +679,7 @@ public  final class InitialLoadBalanceResponse extends
      * positive.
      * </pre>
      *
-     * <code>optional .google.protobuf.Duration client_stats_report_interval = 3;</code>
+     * <code>optional .google.protobuf.Duration client_stats_report_interval = 2;</code>
      */
     public Builder clearClientStatsReportInterval() {
       if (clientStatsReportIntervalBuilder_ == null) {
@@ -794,7 +699,7 @@ public  final class InitialLoadBalanceResponse extends
      * positive.
      * </pre>
      *
-     * <code>optional .google.protobuf.Duration client_stats_report_interval = 3;</code>
+     * <code>optional .google.protobuf.Duration client_stats_report_interval = 2;</code>
      */
     public com.google.protobuf.Duration.Builder getClientStatsReportIntervalBuilder() {
       
@@ -808,7 +713,7 @@ public  final class InitialLoadBalanceResponse extends
      * positive.
      * </pre>
      *
-     * <code>optional .google.protobuf.Duration client_stats_report_interval = 3;</code>
+     * <code>optional .google.protobuf.Duration client_stats_report_interval = 2;</code>
      */
     public com.google.protobuf.DurationOrBuilder getClientStatsReportIntervalOrBuilder() {
       if (clientStatsReportIntervalBuilder_ != null) {
@@ -825,7 +730,7 @@ public  final class InitialLoadBalanceResponse extends
      * positive.
      * </pre>
      *
-     * <code>optional .google.protobuf.Duration client_stats_report_interval = 3;</code>
+     * <code>optional .google.protobuf.Duration client_stats_report_interval = 2;</code>
      */
     private com.google.protobuf.SingleFieldBuilderV3<
         com.google.protobuf.Duration, com.google.protobuf.Duration.Builder, com.google.protobuf.DurationOrBuilder> 

grpclb/src/generated/main/java/io/grpc/grpclb/InitialLoadBalanceResponseOrBuilder.java

@@ -9,24 +9,24 @@ public interface InitialLoadBalanceResponseOrBuilder extends
 
   /**
    * <pre>
-   * This is an application layer redirect that indicates the client should
+   * This is an application layer redirect that indicates the client should use
-   * use the specified server for load balancing. When this field is set in
+   * the specified server for load balancing. When this field is non-empty in
    * the response, the client should open a separate connection to the
    * load_balancer_delegate and call the BalanceLoad method.
    * </pre>
    *
-   * <code>optional string load_balancer_delegate = 2;</code>
+   * <code>optional string load_balancer_delegate = 1;</code>
    */
   java.lang.String getLoadBalancerDelegate();
   /**
    * <pre>
-   * This is an application layer redirect that indicates the client should
+   * This is an application layer redirect that indicates the client should use
-   * use the specified server for load balancing. When this field is set in
+   * the specified server for load balancing. When this field is non-empty in
    * the response, the client should open a separate connection to the
    * load_balancer_delegate and call the BalanceLoad method.
    * </pre>
    *
-   * <code>optional string load_balancer_delegate = 2;</code>
+   * <code>optional string load_balancer_delegate = 1;</code>
    */
   com.google.protobuf.ByteString
       getLoadBalancerDelegateBytes();
@@ -38,7 +38,7 @@ public interface InitialLoadBalanceResponseOrBuilder extends
    * positive.
    * </pre>
    *
-   * <code>optional .google.protobuf.Duration client_stats_report_interval = 3;</code>
+   * <code>optional .google.protobuf.Duration client_stats_report_interval = 2;</code>
    */
   boolean hasClientStatsReportInterval();
   /**
@@ -48,7 +48,7 @@ public interface InitialLoadBalanceResponseOrBuilder extends
    * positive.
    * </pre>
    *
-   * <code>optional .google.protobuf.Duration client_stats_report_interval = 3;</code>
+   * <code>optional .google.protobuf.Duration client_stats_report_interval = 2;</code>
    */
   com.google.protobuf.Duration getClientStatsReportInterval();
   /**
@@ -58,9 +58,7 @@ public interface InitialLoadBalanceResponseOrBuilder extends
    * positive.
    * </pre>
    *
-   * <code>optional .google.protobuf.Duration client_stats_report_interval = 3;</code>
+   * <code>optional .google.protobuf.Duration client_stats_report_interval = 2;</code>
    */
   com.google.protobuf.DurationOrBuilder getClientStatsReportIntervalOrBuilder();
-
-  public io.grpc.grpclb.InitialLoadBalanceResponse.InitialResponseTypeCase getInitialResponseTypeCase();
 }

grpclb/src/generated/main/java/io/grpc/grpclb/LoadBalancerProto.java

@@ -71,19 +71,19 @@ public final class LoadBalancerProto {
       "al_response\030\001 \001(\0132&.grpc.lb.v1.InitialLo" +
       "adBalanceResponseH\000\022-\n\013server_list\030\002 \001(\013" +
       "2\026.grpc.lb.v1.ServerListH\000B\034\n\032load_balan" +
-      "ce_response_type\"\230\001\n\032InitialLoadBalanceR" +
+      "ce_response_type\"}\n\032InitialLoadBalanceRe" +
-      "esponse\022 \n\026load_balancer_delegate\030\002 \001(\tH" +
+      "sponse\022\036\n\026load_balancer_delegate\030\001 \001(\t\022?" +
-      "\000\022?\n\034client_stats_report_interval\030\003 \001(\0132" +
+      "\n\034client_stats_report_interval\030\002 \001(\0132\031.g" +
-      "\031.google.protobuf.DurationB\027\n\025initial_re" +
+      "oogle.protobuf.Duration\"i\n\nServerList\022#\n" +
-      "sponse_type\"i\n\nServerList\022#\n\007servers\030\001 \003" +
+      "\007servers\030\001 \003(\0132\022.grpc.lb.v1.Server\0226\n\023ex" +
-      "(\0132\022.grpc.lb.v1.Server\0226\n\023expiration_int" +
+      "piration_interval\030\003 \001(\0132\031.google.protobu" +
-      "erval\030\003 \001(\0132\031.google.protobuf.Duration\"\\",
+      "f.Duration\"\\\n\006Server\022\022\n\nip_address\030\001 \001(\014",
-      "\n\006Server\022\022\n\nip_address\030\001 \001(\014\022\014\n\004port\030\002 \001" +
+      "\022\014\n\004port\030\002 \001(\005\022\032\n\022load_balance_token\030\003 \001" +
-      "(\005\022\032\n\022load_balance_token\030\003 \001(\t\022\024\n\014drop_r" +
+      "(\t\022\024\n\014drop_request\030\004 \001(\0102b\n\014LoadBalancer" +
-      "equest\030\004 \001(\0102b\n\014LoadBalancer\022R\n\013BalanceL" +
+      "\022R\n\013BalanceLoad\022\036.grpc.lb.v1.LoadBalance" +
-      "oad\022\036.grpc.lb.v1.LoadBalanceRequest\032\037.gr" +
+      "Request\032\037.grpc.lb.v1.LoadBalanceResponse" +
-      "pc.lb.v1.LoadBalanceResponse(\0010\001B%\n\016io.g" +
+      "(\0010\001B%\n\016io.grpc.grpclbB\021LoadBalancerProt" +
-      "rpc.grpclbB\021LoadBalancerProtoP\001b\006proto3"
+      "oP\001b\006proto3"
     };
     com.google.protobuf.Descriptors.FileDescriptor.InternalDescriptorAssigner assigner =
         new com.google.protobuf.Descriptors.FileDescriptor.    InternalDescriptorAssigner() {
@@ -127,7 +127,7 @@ public final class LoadBalancerProto {
     internal_static_grpc_lb_v1_InitialLoadBalanceResponse_fieldAccessorTable = new
       com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
         internal_static_grpc_lb_v1_InitialLoadBalanceResponse_descriptor,
-        new java.lang.String[] { "LoadBalancerDelegate", "ClientStatsReportInterval", "InitialResponseType", });
+        new java.lang.String[] { "LoadBalancerDelegate", "ClientStatsReportInterval", });
     internal_static_grpc_lb_v1_ServerList_descriptor =
       getDescriptor().getMessageTypes().get(5);
     internal_static_grpc_lb_v1_ServerList_fieldAccessorTable = new

grpclb/src/generated/main/java/io/grpc/grpclb/Server.java

@@ -121,9 +121,10 @@ public  final class Server extends
   private volatile java.lang.Object loadBalanceToken_;
   /**
    * <pre>
-   * An opaque token that is passed from the client to the server in metadata.
+   * An opaque but printable token given to the frontend for each pick. All
-   * The server may expect this token to indicate that the request from the
+   * frontend requests for that pick must include the token in its initial
-   * client was load balanced.
+   * metadata. The token is used by the backend to verify the request and to
+   * allow the backend to report load to the gRPC LB system.
    * </pre>
    *
    * <code>optional string load_balance_token = 3;</code>
@@ -142,9 +143,10 @@ public  final class Server extends
   }
   /**
    * <pre>
-   * An opaque token that is passed from the client to the server in metadata.
+   * An opaque but printable token given to the frontend for each pick. All
-   * The server may expect this token to indicate that the request from the
+   * frontend requests for that pick must include the token in its initial
-   * client was load balanced.
+   * metadata. The token is used by the backend to verify the request and to
+   * allow the backend to report load to the gRPC LB system.
    * </pre>
    *
    * <code>optional string load_balance_token = 3;</code>
@@ -583,9 +585,10 @@ public  final class Server extends
     private java.lang.Object loadBalanceToken_ = "";
     /**
      * <pre>
-     * An opaque token that is passed from the client to the server in metadata.
+     * An opaque but printable token given to the frontend for each pick. All
-     * The server may expect this token to indicate that the request from the
+     * frontend requests for that pick must include the token in its initial
-     * client was load balanced.
+     * metadata. The token is used by the backend to verify the request and to
+     * allow the backend to report load to the gRPC LB system.
      * </pre>
      *
      * <code>optional string load_balance_token = 3;</code>
@@ -604,9 +607,10 @@ public  final class Server extends
     }
     /**
      * <pre>
-     * An opaque token that is passed from the client to the server in metadata.
+     * An opaque but printable token given to the frontend for each pick. All
-     * The server may expect this token to indicate that the request from the
+     * frontend requests for that pick must include the token in its initial
-     * client was load balanced.
+     * metadata. The token is used by the backend to verify the request and to
+     * allow the backend to report load to the gRPC LB system.
      * </pre>
      *
      * <code>optional string load_balance_token = 3;</code>
@@ -626,9 +630,10 @@ public  final class Server extends
     }
     /**
      * <pre>
-     * An opaque token that is passed from the client to the server in metadata.
+     * An opaque but printable token given to the frontend for each pick. All
-     * The server may expect this token to indicate that the request from the
+     * frontend requests for that pick must include the token in its initial
-     * client was load balanced.
+     * metadata. The token is used by the backend to verify the request and to
+     * allow the backend to report load to the gRPC LB system.
      * </pre>
      *
      * <code>optional string load_balance_token = 3;</code>
@@ -645,9 +650,10 @@ public  final class Server extends
     }
     /**
      * <pre>
-     * An opaque token that is passed from the client to the server in metadata.
+     * An opaque but printable token given to the frontend for each pick. All
-     * The server may expect this token to indicate that the request from the
+     * frontend requests for that pick must include the token in its initial
-     * client was load balanced.
+     * metadata. The token is used by the backend to verify the request and to
+     * allow the backend to report load to the gRPC LB system.
      * </pre>
      *
      * <code>optional string load_balance_token = 3;</code>
@@ -660,9 +666,10 @@ public  final class Server extends
     }
     /**
      * <pre>
-     * An opaque token that is passed from the client to the server in metadata.
+     * An opaque but printable token given to the frontend for each pick. All
-     * The server may expect this token to indicate that the request from the
+     * frontend requests for that pick must include the token in its initial
-     * client was load balanced.
+     * metadata. The token is used by the backend to verify the request and to
+     * allow the backend to report load to the gRPC LB system.
      * </pre>
      *
      * <code>optional string load_balance_token = 3;</code>

grpclb/src/generated/main/java/io/grpc/grpclb/ServerOrBuilder.java

@@ -28,9 +28,10 @@ public interface ServerOrBuilder extends
 
   /**
    * <pre>
-   * An opaque token that is passed from the client to the server in metadata.
+   * An opaque but printable token given to the frontend for each pick. All
-   * The server may expect this token to indicate that the request from the
+   * frontend requests for that pick must include the token in its initial
-   * client was load balanced.
+   * metadata. The token is used by the backend to verify the request and to
+   * allow the backend to report load to the gRPC LB system.
    * </pre>
    *
    * <code>optional string load_balance_token = 3;</code>
@@ -38,9 +39,10 @@ public interface ServerOrBuilder extends
   java.lang.String getLoadBalanceToken();
   /**
    * <pre>
-   * An opaque token that is passed from the client to the server in metadata.
+   * An opaque but printable token given to the frontend for each pick. All
-   * The server may expect this token to indicate that the request from the
+   * frontend requests for that pick must include the token in its initial
-   * client was load balanced.
+   * metadata. The token is used by the backend to verify the request and to
+   * allow the backend to report load to the gRPC LB system.
    * </pre>
    *
    * <code>optional string load_balance_token = 3;</code>

grpclb/src/main/proto/load_balancer.proto

@@ -57,21 +57,16 @@ message LoadBalanceResponse {
 }
 
 message InitialLoadBalanceResponse {
-  oneof initial_response_type {
+  // This is an application layer redirect that indicates the client should use
-    // TODO(zhangkun83): ClientConfig not yet defined
+  // the specified server for load balancing. When this field is non-empty in
-    //ClientConfig client_config = 1;
+  // the response, the client should open a separate connection to the
-
+  // load_balancer_delegate and call the BalanceLoad method.
-    // This is an application layer redirect that indicates the client should
+  string load_balancer_delegate = 1;
-    // use the specified server for load balancing. When this field is set in
-    // the response, the client should open a separate connection to the
-    // load_balancer_delegate and call the BalanceLoad method.
-    string load_balancer_delegate = 2;
-  }
 
   // This interval defines how often the client should send the client stats
   // to the load balancer. Stats should only be reported when the duration is
   // positive.
-  google.protobuf.Duration client_stats_report_interval = 3;
+  google.protobuf.Duration client_stats_report_interval = 2;
 }
 
 message ServerList {
@@ -96,9 +91,10 @@ message Server {
   // A resolved port number for the server.
   int32 port = 2;
 
-  // An opaque token that is passed from the client to the server in metadata.
+  // An opaque but printable token given to the frontend for each pick. All
-  // The server may expect this token to indicate that the request from the
+  // frontend requests for that pick must include the token in its initial
-  // client was load balanced.
+  // metadata. The token is used by the backend to verify the request and to
+  // allow the backend to report load to the gRPC LB system.
   string load_balance_token = 3;
 
   // Indicates whether this particular request should be dropped by the client