@@ -187,6 +187,7 @@ static Database fromProto(
 .setVersionRetentionPeriod(proto.getVersionRetentionPeriod())
 .setEarliestVersionTime(Timestamp.fromProto(proto.getEarliestVersionTime()))
 .setEncryptionConfig(CustomerManagedEncryption.fromProtoOrNull(proto.getEncryptionConfig()))
+.setDefaultLeader(proto.getDefaultLeader())
 .setProto(proto)
 .build();
 }

@@ -24,6 +24,7 @@
 
 /** Represents a Cloud Spanner database. */
 public class DatabaseInfo {
+
 public abstract static class Builder {
 abstract Builder setState(State state);
 
@@ -44,6 +45,15 @@ public abstract static class Builder {
 */
 public abstract Builder setEncryptionConfig(CustomerManagedEncryption encryptionConfig);
 
+/**
+* The read-write region which will be used for the database's leader replicas. This can be one
+* of the values as specified in
+* https://cloud.google.com/spanner/docs/instances#available-configurations-multi-region.
+*/
+public Builder setDefaultLeader(String defaultLeader) {
+throw new UnsupportedOperationException("Unimplemented");
+}
+
 abstract Builder setProto(com.google.spanner.admin.database.v1.Database proto);
 
 /** Builds the database from this builder. */
@@ -58,6 +68,7 @@ abstract static class BuilderImpl extends Builder {
 private String versionRetentionPeriod;
 private Timestamp earliestVersionTime;
 private CustomerManagedEncryption encryptionConfig;
+private String defaultLeader;
 private com.google.spanner.admin.database.v1.Database proto;
 
 BuilderImpl(DatabaseId id) {
@@ -72,6 +83,7 @@ abstract static class BuilderImpl extends Builder {
 this.versionRetentionPeriod = other.versionRetentionPeriod;
 this.earliestVersionTime = other.earliestVersionTime;
 this.encryptionConfig = other.encryptionConfig;
+this.defaultLeader = other.defaultLeader;
 this.proto = other.proto;
 }
 
@@ -111,6 +123,12 @@ public Builder setEncryptionConfig(@Nullable CustomerManagedEncryption encryptio
 return this;
 }
 
+@Override
+public Builder setDefaultLeader(String defaultLeader) {
+this.defaultLeader = defaultLeader;
+return this;
+}
+
 @Override
 Builder setProto(@Nullable com.google.spanner.admin.database.v1.Database proto) {
 this.proto = proto;
@@ -137,6 +155,7 @@ public enum State {
 private final String versionRetentionPeriod;
 private final Timestamp earliestVersionTime;
 private final CustomerManagedEncryption encryptionConfig;
+private final String defaultLeader;
 private final com.google.spanner.admin.database.v1.Database proto;
 
 public DatabaseInfo(DatabaseId id, State state) {
@@ -147,6 +166,7 @@ public DatabaseInfo(DatabaseId id, State state) {
 this.versionRetentionPeriod = null;
 this.earliestVersionTime = null;
 this.encryptionConfig = null;
+this.defaultLeader = null;
 this.proto = null;
 }
 
@@ -158,6 +178,7 @@ public DatabaseInfo(DatabaseId id, State state) {
 this.versionRetentionPeriod = builder.versionRetentionPeriod;
 this.earliestVersionTime = builder.earliestVersionTime;
 this.encryptionConfig = builder.encryptionConfig;
+this.defaultLeader = builder.defaultLeader;
 this.proto = builder.proto;
 }
 
@@ -209,6 +230,15 @@ public Timestamp getEarliestVersionTime() {
 return encryptionConfig;
 }
 
+/**
+* The read-write region which contains the database's leader replicas. If this value was not
+* explicitly set during a create database or update database ddl operations, it will be {@code
+* NULL}.
+*/
+public @Nullable String getDefaultLeader() {
+return defaultLeader;
+}
+
 /** Returns the raw proto instance that was used to construct this {@link Database}. */
 public @Nullable com.google.spanner.admin.database.v1.Database getProto() {
 return proto;
@@ -229,7 +259,8 @@ public boolean equals(Object o) {
 && Objects.equals(restoreInfo, that.restoreInfo)
 && Objects.equals(versionRetentionPeriod, that.versionRetentionPeriod)
 && Objects.equals(earliestVersionTime, that.earliestVersionTime)
-&& Objects.equals(encryptionConfig, that.encryptionConfig);
+&& Objects.equals(encryptionConfig, that.encryptionConfig)
+&& Objects.equals(defaultLeader, that.defaultLeader);
 }
 
 @Override
@@ -241,19 +272,21 @@ public int hashCode() {
 restoreInfo,
 versionRetentionPeriod,
 earliestVersionTime,
-encryptionConfig);
+encryptionConfig,
+defaultLeader);
 }
 
 @Override
 public String toString() {
 return String.format(
-"Database[%s, %s, %s, %s, %s, %s, %s]",
+"Database[%s, %s, %s, %s, %s, %s, %s, %s]",
 id.getName(),
 state,
 createTime,
 restoreInfo,
 versionRetentionPeriod,
 earliestVersionTime,
-encryptionConfig);
+encryptionConfig,
+defaultLeader);
 }
 }

@@ -16,6 +16,10 @@
 
 package com.google.cloud.spanner;
 
+import java.util.Collections;
+import java.util.List;
+import java.util.stream.Collectors;
+
 /**
 * Represents a Cloud Spanner instance config.{@code InstanceConfig} adds a layer of service related
 * functionality over {@code InstanceConfigInfo}.
@@ -25,7 +29,16 @@ public class InstanceConfig extends InstanceConfigInfo {
 private final InstanceAdminClient client;
 
 public InstanceConfig(InstanceConfigId id, String displayName, InstanceAdminClient client) {
-super(id, displayName);
+this(id, displayName, Collections.emptyList(), Collections.emptyList(), client);
+}
+
+public InstanceConfig(
+InstanceConfigId id,
+String displayName,
+List<ReplicaInfo> replicas,
+List<String> leaderOptions,
+InstanceAdminClient client) {
+super(id, displayName, replicas, leaderOptions);
 this.client = client;
 }
 
@@ -36,6 +49,11 @@ public InstanceConfig reload() {
 
 static InstanceConfig fromProto(
 com.google.spanner.admin.instance.v1.InstanceConfig proto, InstanceAdminClient client) {
-return new InstanceConfig(InstanceConfigId.of(proto.getName()), proto.getDisplayName(), client);
+return new InstanceConfig(
+InstanceConfigId.of(proto.getName()),
+proto.getDisplayName(),
+proto.getReplicasList().stream().map(ReplicaInfo::fromProto).collect(Collectors.toList()),
+proto.getLeaderOptionsList(),
+client);
 }
 }

@@ -16,22 +16,34 @@
 
 package com.google.cloud.spanner;
 
+import java.util.Collections;
+import java.util.List;
 import java.util.Objects;
 
 /** Represents a Cloud Spanner instance config resource. */
 public class InstanceConfigInfo {
 
 private final InstanceConfigId id;
 private final String displayName;
+private final List<ReplicaInfo> replicas;
+private final List<String> leaderOptions;
 
 public InstanceConfigInfo(InstanceConfigId id, String displayName) {
+this(id, displayName, Collections.emptyList(), Collections.emptyList());
+}
+
+public InstanceConfigInfo(
+InstanceConfigId id,
+String displayName,
+List<ReplicaInfo> replicas,
+List<String> leaderOptions) {
 this.id = id;
 this.displayName = displayName;
+this.replicas = replicas;
+this.leaderOptions = leaderOptions;
 }
 
-/*
-* Returns the id of this instance config.
-*/
+/** Returns the id of this instance config. */
 public InstanceConfigId getId() {
 return id;
 }
@@ -41,25 +53,45 @@ public String getDisplayName() {
 return displayName;
 }
 
-@Override
-public int hashCode() {
-return Objects.hash(id, displayName);
+/**
+* The geographic placement of nodes in this instance configuration and their replication
+* properties.
+*/
+public List<ReplicaInfo> getReplicas() {
+return replicas;
+}
+
+/**
+* Allowed values of the default leader schema option for databases in instances that use this
+* instance configuration.
+*/
+public List<String> getLeaderOptions() {
+return leaderOptions;
 }
 
 @Override
 public boolean equals(Object o) {
 if (this == o) {
 return true;
 }
-if (o == null || getClass() != o.getClass()) {
+if (!(o instanceof InstanceConfigInfo)) {
 return false;
 }
 InstanceConfigInfo that = (InstanceConfigInfo) o;
-return that.id.equals(id) && that.displayName.equals(displayName);
+return Objects.equals(id, that.id)
+&& Objects.equals(displayName, that.displayName)
+&& Objects.equals(replicas, that.replicas)
+&& Objects.equals(leaderOptions, that.leaderOptions);
+}
+
+@Override
+public int hashCode() {
+return Objects.hash(id, displayName, replicas, leaderOptions);
 }
 
 @Override
 public String toString() {
-return String.format("Instance Config[%s, %s]", id, displayName);
+return String.format(
+"Instance Config[%s, %s, %s, %s]", id, displayName, replicas, leaderOptions);
 }
 }