Java: Adding command COPY (#340)

* Java: Adding command COPY

glide-core/src/client/value_conversion.rs

@@ -698,7 +698,7 @@ pub(crate) fn expected_type_for_cmd(cmd: &Cmd) -> Option<ExpectedReturnType> {
         }),
         b"INCRBYFLOAT" | b"HINCRBYFLOAT" | b"ZINCRBY" => Some(ExpectedReturnType::Double),
         b"HEXISTS" | b"HSETNX" | b"EXPIRE" | b"EXPIREAT" | b"PEXPIRE" | b"PEXPIREAT"
-        | b"SISMEMBER" | b"PERSIST" | b"SMOVE" | b"RENAMENX" | b"MOVE" => {
+        | b"SISMEMBER" | b"PERSIST" | b"SMOVE" | b"RENAMENX" | b"MOVE" | b"COPY" => {
             Some(ExpectedReturnType::Boolean)
         }
         b"SMISMEMBER" => Some(ExpectedReturnType::ArrayOfBools),

glide-core/src/protobuf/redis_request.proto

@@ -209,6 +209,7 @@ enum RequestType {
     BitFieldReadOnly = 173;
     Move = 174;
     SInterCard = 175;
+    Copy = 178;
 }
 
 message Command {

glide-core/src/request_type.rs

@@ -179,6 +179,7 @@ pub enum RequestType {
     BitFieldReadOnly = 173,
     Move = 174,
     SInterCard = 175,
+    Copy = 178,
 }
 
 fn get_two_word_command(first: &str, second: &str) -> Cmd {
@@ -360,6 +361,7 @@ impl From<::protobuf::EnumOrUnknown<ProtobufRequestType>> for RequestType {
             ProtobufRequestType::BitFieldReadOnly => RequestType::BitFieldReadOnly,
             ProtobufRequestType::Move => RequestType::Move,
             ProtobufRequestType::SInterCard => RequestType::SInterCard,
+            ProtobufRequestType::Copy => RequestType::Copy,
             ProtobufRequestType::Sort => RequestType::Sort,
         }
     }
@@ -538,6 +540,7 @@ impl RequestType {
             RequestType::BitFieldReadOnly => Some(cmd("BITFIELD_RO")),
             RequestType::Move => Some(cmd("MOVE")),
             RequestType::SInterCard => Some(cmd("SINTERCARD")),
+            RequestType::Copy => Some(cmd("COPY")),
             RequestType::Sort => Some(cmd("SORT")),
         }
     }

java/client/src/main/java/glide/api/BaseClient.java

@@ -25,6 +25,7 @@
 import static redis_request.RedisRequestOuterClass.RequestType.BitFieldReadOnly;
 import static redis_request.RedisRequestOuterClass.RequestType.BitOp;
 import static redis_request.RedisRequestOuterClass.RequestType.BitPos;
+import static redis_request.RedisRequestOuterClass.RequestType.Copy;
 import static redis_request.RedisRequestOuterClass.RequestType.Decr;
 import static redis_request.RedisRequestOuterClass.RequestType.DecrBy;
 import static redis_request.RedisRequestOuterClass.RequestType.Del;
@@ -1733,4 +1734,20 @@ public CompletableFuture<Long> sintercard(@NonNull String[] keys, long limit) {
                         new String[] {SET_LIMIT_REDIS_API, Long.toString(limit)});
         return commandManager.submitNewCommand(SInterCard, arguments, this::handleLongResponse);
     }
+
+    @Override
+    public CompletableFuture<Boolean> copy(
+            @NonNull String source, @NonNull String destination, boolean replace) {
+        String[] arguments = new String[] {source, destination};
+        if (replace) {
+            arguments = ArrayUtils.add(arguments, REPLACE_REDIS_API);
+        }
+        return commandManager.submitNewCommand(Copy, arguments, this::handleBooleanResponse);
+    }
+
+    @Override
+    public CompletableFuture<Boolean> copy(@NonNull String source, @NonNull String destination) {
+        String[] arguments = new String[] {source, destination};
+        return commandManager.submitNewCommand(Copy, arguments, this::handleBooleanResponse);
+    }
 }

java/client/src/main/java/glide/api/RedisClient.java

@@ -13,6 +13,7 @@
 import static redis_request.RedisRequestOuterClass.RequestType.ConfigResetStat;
 import static redis_request.RedisRequestOuterClass.RequestType.ConfigRewrite;
 import static redis_request.RedisRequestOuterClass.RequestType.ConfigSet;
+import static redis_request.RedisRequestOuterClass.RequestType.Copy;
 import static redis_request.RedisRequestOuterClass.RequestType.CustomCommand;
 import static redis_request.RedisRequestOuterClass.RequestType.DBSize;
 import static redis_request.RedisRequestOuterClass.RequestType.Echo;
@@ -42,6 +43,7 @@
 import java.util.Map;
 import java.util.concurrent.CompletableFuture;
 import lombok.NonNull;
+import org.apache.commons.lang3.ArrayUtils;
 
 /**
  * Async (non-blocking) client for Redis in Standalone mode. Use {@link #CreateClient} to request a
@@ -238,4 +240,23 @@ public CompletableFuture<String> functionDelete(@NonNull String libName) {
         return commandManager.submitNewCommand(
                 FunctionDelete, new String[] {libName}, this::handleStringResponse);
     }
+
+    @Override
+    public CompletableFuture<Boolean> copy(
+            @NonNull String source, @NonNull String destination, long destinationDB) {
+        String[] arguments =
+                new String[] {source, destination, DB_REDIS_API, Long.toString(destinationDB)};
+        return commandManager.submitNewCommand(Copy, arguments, this::handleBooleanResponse);
+    }
+
+    @Override
+    public CompletableFuture<Boolean> copy(
+            @NonNull String source, @NonNull String destination, long destinationDB, boolean replace) {
+        String[] arguments =
+                new String[] {source, destination, DB_REDIS_API, Long.toString(destinationDB)};
+        if (replace) {
+            arguments = ArrayUtils.add(arguments, REPLACE_REDIS_API);
+        }
+        return commandManager.submitNewCommand(Copy, arguments, this::handleBooleanResponse);
+    }
 }

java/client/src/main/java/glide/api/commands/GenericBaseCommands.java

@@ -13,6 +13,8 @@
  * @see <a href="https://redis.io/commands/?group=generic">Generic Commands</a>
  */
 public interface GenericBaseCommands {
+    /** Redis API keyword used to replace the destination key. */
+    String REPLACE_REDIS_API = "REPLACE";
 
     /**
      * Removes the specified <code>keys</code> from the database. A key is ignored if it does not
@@ -542,4 +544,50 @@ CompletableFuture<Boolean> pexpireAt(
      * }</pre>
      */
     CompletableFuture<Long> touch(String[] keys);
+
+    /**
+     * Copies the value stored at the <code>source</code> to the <code>destination</code> key if the
+     * <code>destination</code> key does not yet exist.
+     *
+     * @apiNote When in cluster mode, both <code>source</code> and <code>destination</code> must map
+     *     to the same hash slot.
+     * @since Redis 6.2.0 and above.
+     * @see <a href="https://redis.io/commands/copy/">redis.io</a> for details.
+     * @param source The key to the source value.
+     * @param destination The key where the value should be copied to.
+     * @return <code>true</code> if <code>source</code> was copied, <code>false</code> if <code>source
+     * </code> was not copied.
+     * @example
+     *     <pre>{@code
+     * client.set("test1", "one").get();
+     * client.set("test2", "two").get();
+     * assert !client.copy("test1", "test2").get();
+     * assert client.copy("test1", "test2").get();
+     * }</pre>
+     */
+    CompletableFuture<Boolean> copy(String source, String destination);
+
+    /**
+     * Copies the value stored at the <code>source</code> to the <code>destination</code> key. When
+     * <code>replace</code> is true, removes the <code>destination</code> key first if it already
+     * exists, otherwise performs no action.
+     *
+     * @apiNote When in cluster mode, both <code>source</code> and <code>destination</code> must map
+     *     to the same hash slot.
+     * @since Redis 6.2.0 and above.
+     * @see <a href="https://redis.io/commands/copy/">redis.io</a> for details.
+     * @param source The key to the source value.
+     * @param destination The key where the value should be copied to.
+     * @param replace If the destination key should be removed before copying the value to it.
+     * @return <code>true</code> if <code>source</code> was copied, <code>false</code> if <code>source
+     * </code> was not copied.
+     * @example
+     *     <pre>{@code
+     * client.set("test1", "one").get();
+     * client.set("test2", "two").get();
+     * assert !client.copy("test1", "test2", false).get();
+     * assert client.copy("test1", "test2", true).get();
+     * }</pre>
+     */
+    CompletableFuture<Boolean> copy(String source, String destination, boolean replace);
 }

java/client/src/main/java/glide/api/commands/GenericCommands.java

@@ -10,6 +10,8 @@
  * @see <a href="https://redis.io/commands/?group=generic">Generic Commands</a>
  */
 public interface GenericCommands {
+    /** Redis API keyword used to denote the destination db index. */
+    String DB_REDIS_API = "DB";
 
     /**
      * Executes a single command, without checking inputs. Every part of the command, including
@@ -72,4 +74,46 @@ public interface GenericCommands {
      * }</pre>
      */
     CompletableFuture<Boolean> move(String key, long dbIndex);
+
+    /**
+     * Copies the value stored at the <code>source</code> to the <code>destination</code> key on
+     * <code>destinationDB</code>. When <code>replace</code> is true, removes the <code>destination
+     * </code> key first if it already exists, otherwise performs no action.
+     *
+     * @since Redis 6.2.0 and above.
+     * @see <a href="https://redis.io/commands/copy/">redis.io</a> for details.
+     * @param source The key to the source value.
+     * @param destination The key where the value should be copied to.
+     * @param destinationDB The alternative logical database index for the destination key.
+     * @param replace If the destination key should be removed before copying the value to it.
+     * @return <code>true</code> if <code>source</code> was copied, <code>false</code> if <code>source
+     * </code> was not copied.
+     * @example
+     *     <pre>{@code
+     * client.set("test1", "one").get();
+     * assert client.copy("test1", "test2", 1, false).get();
+     * }</pre>
+     */
+    CompletableFuture<Boolean> copy(
+            String source, String destination, long destinationDB, boolean replace);
+
+    /**
+     * Copies the value stored at the <code>source</code> to the <code>destination</code> key on
+     * <code>destinationDB</code>. When <code>replace</code> is true, removes the <code>destination
+     * </code> key first if it already exists, otherwise performs no action.
+     *
+     * @since Redis 6.2.0 and above.
+     * @see <a href="https://redis.io/commands/copy/">redis.io</a> for details.
+     * @param source The key to the source value.
+     * @param destination The key where the value should be copied to.
+     * @param destinationDB The alternative logical database index for the destination key.
+     * @return <code>true</code> if <code>source</code> was copied, <code>false</code> if <code>source
+     * </code> was not copied.
+     * @example
+     *     <pre>{@code
+     * client.set("test1", "one").get();
+     * assert client.copy("test1", "test2", 1).get();
+     * }</pre>
+     */
+    CompletableFuture<Boolean> copy(String source, String destination, long destinationDB);
 }

java/client/src/main/java/glide/api/models/BaseTransaction.java

@@ -1,6 +1,7 @@
 /** Copyright GLIDE-for-Redis Project Contributors - SPDX Identifier: Apache-2.0 */
 package glide.api.models;
 
+import static glide.api.commands.GenericBaseCommands.REPLACE_REDIS_API;
 import static glide.api.commands.HashBaseCommands.WITH_VALUES_REDIS_API;
 import static glide.api.commands.ListBaseCommands.COUNT_FOR_LIST_REDIS_API;
 import static glide.api.commands.ServerManagementCommands.VERSION_REDIS_API;
@@ -37,6 +38,7 @@
 import static redis_request.RedisRequestOuterClass.RequestType.ConfigResetStat;
 import static redis_request.RedisRequestOuterClass.RequestType.ConfigRewrite;
 import static redis_request.RedisRequestOuterClass.RequestType.ConfigSet;
+import static redis_request.RedisRequestOuterClass.RequestType.Copy;
 import static redis_request.RedisRequestOuterClass.RequestType.CustomCommand;
 import static redis_request.RedisRequestOuterClass.RequestType.DBSize;
 import static redis_request.RedisRequestOuterClass.RequestType.Decr;
@@ -3456,6 +3458,44 @@ public T touch(@NonNull String[] keys) {
         return getThis();
     }
 
+    /**
+     * Copies the value stored at the <code>source</code> to the <code>destination</code> key. When
+     * <code>replace</code> is true, removes the <code>destination</code> key first if it already
+     * exists, otherwise performs no action.
+     *
+     * @since Redis 6.2.0 and above.
+     * @see <a href="https://redis.io/commands/copy/">redis.io</a> for details.
+     * @param source The key to the source value.
+     * @param destination The key where the value should be copied to.
+     * @param replace If the destination key should be removed before copying the value to it.
+     * @return Command Response - <code>1L</code> if <code>source</code> was copied, <code>0L</code>
+     *     if <code>source</code> was not copied.
+     */
+    public T copy(@NonNull String source, @NonNull String destination, boolean replace) {
+        String[] args = new String[] {source, destination};
+        if (replace) {
+            args = ArrayUtils.add(args, REPLACE_REDIS_API);
+        }
+        ArgsArray commandArgs = buildArgs(args);
+        protobufTransaction.addCommands(buildCommand(Copy, commandArgs));
+        return getThis();
+    }
+
+    /**
+     * Copies the value stored at the <code>source</code> to the <code>destination</code> key if the
+     * <code>destination</code> key does not yet exist.
+     *
+     * @since Redis 6.2.0 and above.
+     * @see <a href="https://redis.io/commands/copy/">redis.io</a> for details.
+     * @param source The key to the source value.
+     * @param destination The key where the value should be copied to.
+     * @return Command Response - <code>true</code> if <code>source</code> was copied, <code>false
+     *     </code> if <code>source</code> was not copied.
+     */
+    public T copy(@NonNull String source, @NonNull String destination) {
+        return copy(source, destination, false);
+    }
+
     /**
      * Counts the number of set bits (population counting) in a string stored at <code>key</code>.
      *

java/client/src/main/java/glide/api/models/Transaction.java

@@ -1,10 +1,15 @@
 /** Copyright GLIDE-for-Redis Project Contributors - SPDX Identifier: Apache-2.0 */
 package glide.api.models;
 
+import static glide.api.commands.GenericBaseCommands.REPLACE_REDIS_API;
+import static glide.api.commands.GenericCommands.DB_REDIS_API;
+import static redis_request.RedisRequestOuterClass.RequestType.Copy;
 import static redis_request.RedisRequestOuterClass.RequestType.Move;
 import static redis_request.RedisRequestOuterClass.RequestType.Select;
 
 import lombok.AllArgsConstructor;
+import lombok.NonNull;
+import org.apache.commons.lang3.ArrayUtils;
 import redis_request.RedisRequestOuterClass.Command.ArgsArray;
 
 /**
@@ -64,4 +69,46 @@ public Transaction move(String key, long dbIndex) {
         protobufTransaction.addCommands(buildCommand(Move, commandArgs));
         return this;
     }
+
+    /**
+     * Copies the value stored at the <code>source</code> to the <code>destination</code> key on
+     * <code>destinationDB</code>. When <code>replace</code> is true, removes the <code>destination
+     * </code> key first if it already exists, otherwise performs no action.
+     *
+     * @since Redis 6.2.0 and above.
+     * @see <a href="https://redis.io/commands/copy/">redis.io</a> for details.
+     * @param source The key to the source value.
+     * @param destination The key where the value should be copied to.
+     * @param destinationDB The alternative logical database index for the destination key.
+     * @return Command Response - <code>true</code> if <code>source</code> was copied, <code>false
+     *     </code> if <code>source</code> was not copied.
+     */
+    public Transaction copy(@NonNull String source, @NonNull String destination, long destinationDB) {
+        return copy(source, destination, destinationDB, false);
+    }
+
+    /**
+     * Copies the value stored at the <code>source</code> to the <code>destination</code> key on
+     * <code>destinationDB</code>. When <code>replace</code> is true, removes the <code>destination
+     * </code> key first if it already exists, otherwise performs no action.
+     *
+     * @since Redis 6.2.0 and above.
+     * @see <a href="https://redis.io/commands/copy/">redis.io</a> for details.
+     * @param source The key to the source value.
+     * @param destination The key where the value should be copied to.
+     * @param destinationDB The alternative logical database index for the destination key.
+     * @param replace If the destination key should be removed before copying the value to it.
+     * @return Command Response - <code>true</code> if <code>source</code> was copied, <code>false
+     *     </code> if <code>source</code> was not copied.
+     */
+    public Transaction copy(
+            @NonNull String source, @NonNull String destination, long destinationDB, boolean replace) {
+        String[] args = new String[] {source, destination, DB_REDIS_API, Long.toString(destinationDB)};
+        if (replace) {
+            args = ArrayUtils.add(args, REPLACE_REDIS_API);
+        }
+        ArgsArray commandArgs = buildArgs(args);
+        protobufTransaction.addCommands(buildCommand(Copy, commandArgs));
+        return this;
+    }
 }