Implement FT.INFO command

src/main/java/io/lettuce/core/AbstractRedisAsyncCommands.java

@@ -52,7 +52,7 @@
 import io.lettuce.core.search.AggregationReply;
 import io.lettuce.core.search.AggregationReply.Cursor;
 import io.lettuce.core.search.HybridReply;
-
+import io.lettuce.core.search.IndexInfo;
 import io.lettuce.core.search.SearchReply;
 import io.lettuce.core.search.SpellCheckResult;
 import io.lettuce.core.search.Suggestion;
@@ -1638,6 +1638,11 @@ public RedisFuture<List<V>> ftList() {
         return dispatch(searchCommandBuilder.ftList());
     }
 
+    @Override
+    public RedisFuture<IndexInfo<V>> ftInfo(String index) {
+        return dispatch(searchCommandBuilder.ftInfo(index));
+    }
+
     @Override
     public RedisFuture<Map<V, List<V>>> ftSyndump(String index) {
         return dispatch(searchCommandBuilder.ftSyndump(index));

src/main/java/io/lettuce/core/AbstractRedisReactiveCommands.java

@@ -54,6 +54,7 @@
 import io.lettuce.core.search.AggregationReply.Cursor;
 
 import io.lettuce.core.search.HybridReply;
+import io.lettuce.core.search.IndexInfo;
 import io.lettuce.core.search.SearchReply;
 import io.lettuce.core.search.SpellCheckResult;
 import io.lettuce.core.search.Suggestion;
@@ -1699,6 +1700,11 @@ public Flux<V> ftList() {
         return createDissolvingFlux(() -> searchCommandBuilder.ftList());
     }
 
+    @Override
+    public Mono<IndexInfo<V>> ftInfo(String index) {
+        return createMono(() -> searchCommandBuilder.ftInfo(index));
+    }
+
     @Override
     public Mono<Map<V, List<V>>> ftSyndump(String index) {
         return createMono(() -> searchCommandBuilder.ftSyndump(index));

src/main/java/io/lettuce/core/RediSearchCommandBuilder.java

@@ -22,18 +22,8 @@
 import io.lettuce.core.protocol.Command;
 import io.lettuce.core.protocol.CommandArgs;
 import io.lettuce.core.protocol.CommandKeyword;
-import io.lettuce.core.search.AggregateReplyParser;
-import io.lettuce.core.search.AggregationReply;
-import io.lettuce.core.search.HybridReply;
-import io.lettuce.core.search.HybridReplyParser;
-
-import io.lettuce.core.search.SearchReply;
-import io.lettuce.core.search.SearchReplyParser;
-import io.lettuce.core.search.SpellCheckResult;
-import io.lettuce.core.search.SpellCheckResultParser;
-import io.lettuce.core.search.Suggestion;
-import io.lettuce.core.search.SuggestionParser;
-import io.lettuce.core.search.SynonymMapParser;
+import io.lettuce.core.search.*;
+
 import io.lettuce.core.search.arguments.AggregateArgs;
 import io.lettuce.core.search.arguments.CreateArgs;
 import io.lettuce.core.search.arguments.ExplainArgs;
@@ -411,6 +401,20 @@ public Command<K, V, String> ftExplain(String index, V query, ExplainArgs<K, V>
         return createCommand(FT_EXPLAIN, new StatusOutput<>(codec), commandArgs);
     }
 
+    /**
+     * Return information and statistics about an index.
+     *
+     * @param index the index name
+     * @return an IndexInfo object containing index information and statistics
+     */
+    public Command<K, V, IndexInfo<V>> ftInfo(String index) {
+        LettuceAssert.notNull(index, "Index must not be null");
+
+        CommandArgs<K, V> commandArgs = new CommandArgs<>(codec).add(index);
+
+        return createCommand(FT_INFO, new EncodedComplexOutput<>(codec, new IndexInfoParser<>(codec)), commandArgs);
+    }
+
     /**
      * Return a list of all existing indexes.
      *

src/main/java/io/lettuce/core/api/async/RediSearchAsyncCommands.java

@@ -12,6 +12,7 @@
 import io.lettuce.core.annotations.Experimental;
 import io.lettuce.core.search.AggregationReply;
 import io.lettuce.core.search.HybridReply;
+import io.lettuce.core.search.IndexInfo;
 import io.lettuce.core.search.SearchReply;
 import io.lettuce.core.search.SpellCheckResult;
 import io.lettuce.core.search.Suggestion;
@@ -628,6 +629,56 @@ public interface RediSearchAsyncCommands<K, V> {
     @Experimental
     RedisFuture<List<V>> ftList();
 
+    /**
+     * Return information and statistics about a search index.
+     *
+     * <p>
+     * This command returns detailed information and statistics about a specified search index, including configuration, schema
+     * definition, memory usage, indexing progress, and performance metrics.
+     * </p>
+     *
+     * <p>
+     * The returned map contains various categories of information:
+     * </p>
+     * <ul>
+     * <li><strong>General:</strong> index_name, index_options, index_definition, attributes, num_docs, max_doc_id, num_terms,
+     * num_records</li>
+     * <li><strong>Size statistics:</strong> inverted_sz_mb, vector_index_sz_mb, doc_table_size_mb, sortable_values_size_mb,
+     * key_table_size_mb, etc.</li>
+     * <li><strong>Indexing statistics:</strong> hash_indexing_failures, total_indexing_time, indexing, percent_indexed,
+     * number_of_uses</li>
+     * <li><strong>Garbage collection:</strong> bytes_collected, total_ms_run, total_cycles, average_cycle_time_ms,
+     * last_run_time_ms</li>
+     * <li><strong>Cursor statistics:</strong> global_idle, global_total, index_capacity, index_total</li>
+     * <li><strong>Dialect statistics:</strong> Usage counts for each query dialect (1-4)</li>
+     * <li><strong>Error statistics:</strong> Indexing failures and errors per field</li>
+     * </ul>
+     *
+     * <p>
+     * Key use cases:
+     * </p>
+     * <ul>
+     * <li><strong>Monitoring:</strong> Track index health, memory usage, and performance</li>
+     * <li><strong>Debugging:</strong> Identify indexing failures and errors</li>
+     * <li><strong>Capacity planning:</strong> Analyze memory consumption and growth trends</li>
+     * <li><strong>Performance tuning:</strong> Review indexing time and garbage collection metrics</li>
+     * </ul>
+     *
+     * <p>
+     * <strong>Time complexity:</strong> O(1)
+     * </p>
+     *
+     * @param index the index name
+     * @return an IndexInfo object containing index information and statistics
+     * @since 6.8
+     * @see <a href="https://redis.io/docs/latest/commands/ft.info/">FT.INFO</a>
+     * @see #ftCreate(String, CreateArgs, List)
+     * @see #ftList()
+     * @see #ftDropindex(String)
+     */
+    @Experimental
+    RedisFuture<IndexInfo<V>> ftInfo(String index);
+
     /**
      * Dump synonym group contents.
      *

src/main/java/io/lettuce/core/api/reactive/RediSearchReactiveCommands.java

@@ -12,6 +12,7 @@
 import io.lettuce.core.annotations.Experimental;
 import io.lettuce.core.search.AggregationReply;
 import io.lettuce.core.search.HybridReply;
+import io.lettuce.core.search.IndexInfo;
 import io.lettuce.core.search.SearchReply;
 import io.lettuce.core.search.SpellCheckResult;
 import io.lettuce.core.search.Suggestion;
@@ -630,6 +631,56 @@ public interface RediSearchReactiveCommands<K, V> {
     @Experimental
     Flux<V> ftList();
 
+    /**
+     * Return information and statistics about a search index.
+     *
+     * <p>
+     * This command returns detailed information and statistics about a specified search index, including configuration, schema
+     * definition, memory usage, indexing progress, and performance metrics.
+     * </p>
+     *
+     * <p>
+     * The returned map contains various categories of information:
+     * </p>
+     * <ul>
+     * <li><strong>General:</strong> index_name, index_options, index_definition, attributes, num_docs, max_doc_id, num_terms,
+     * num_records</li>
+     * <li><strong>Size statistics:</strong> inverted_sz_mb, vector_index_sz_mb, doc_table_size_mb, sortable_values_size_mb,
+     * key_table_size_mb, etc.</li>
+     * <li><strong>Indexing statistics:</strong> hash_indexing_failures, total_indexing_time, indexing, percent_indexed,
+     * number_of_uses</li>
+     * <li><strong>Garbage collection:</strong> bytes_collected, total_ms_run, total_cycles, average_cycle_time_ms,
+     * last_run_time_ms</li>
+     * <li><strong>Cursor statistics:</strong> global_idle, global_total, index_capacity, index_total</li>
+     * <li><strong>Dialect statistics:</strong> Usage counts for each query dialect (1-4)</li>
+     * <li><strong>Error statistics:</strong> Indexing failures and errors per field</li>
+     * </ul>
+     *
+     * <p>
+     * Key use cases:
+     * </p>
+     * <ul>
+     * <li><strong>Monitoring:</strong> Track index health, memory usage, and performance</li>
+     * <li><strong>Debugging:</strong> Identify indexing failures and errors</li>
+     * <li><strong>Capacity planning:</strong> Analyze memory consumption and growth trends</li>
+     * <li><strong>Performance tuning:</strong> Review indexing time and garbage collection metrics</li>
+     * </ul>
+     *
+     * <p>
+     * <strong>Time complexity:</strong> O(1)
+     * </p>
+     *
+     * @param index the index name
+     * @return an IndexInfo object containing index information and statistics
+     * @since 6.8
+     * @see <a href="https://redis.io/docs/latest/commands/ft.info/">FT.INFO</a>
+     * @see #ftCreate(String, CreateArgs, List)
+     * @see #ftList()
+     * @see #ftDropindex(String)
+     */
+    @Experimental
+    Mono<IndexInfo<V>> ftInfo(String index);
+
     /**
      * Dump synonym group contents.
      *

src/main/java/io/lettuce/core/api/sync/RediSearchCommands.java

@@ -12,6 +12,7 @@
 import io.lettuce.core.annotations.Experimental;
 import io.lettuce.core.search.AggregationReply;
 import io.lettuce.core.search.HybridReply;
+import io.lettuce.core.search.IndexInfo;
 import io.lettuce.core.search.SearchReply;
 import io.lettuce.core.search.SpellCheckResult;
 import io.lettuce.core.search.Suggestion;
@@ -628,6 +629,56 @@ public interface RediSearchCommands<K, V> {
     @Experimental
     List<V> ftList();
 
+    /**
+     * Return information and statistics about a search index.
+     *
+     * <p>
+     * This command returns detailed information and statistics about a specified search index, including configuration, schema
+     * definition, memory usage, indexing progress, and performance metrics.
+     * </p>
+     *
+     * <p>
+     * The returned map contains various categories of information:
+     * </p>
+     * <ul>
+     * <li><strong>General:</strong> index_name, index_options, index_definition, attributes, num_docs, max_doc_id, num_terms,
+     * num_records</li>
+     * <li><strong>Size statistics:</strong> inverted_sz_mb, vector_index_sz_mb, doc_table_size_mb, sortable_values_size_mb,
+     * key_table_size_mb, etc.</li>
+     * <li><strong>Indexing statistics:</strong> hash_indexing_failures, total_indexing_time, indexing, percent_indexed,
+     * number_of_uses</li>
+     * <li><strong>Garbage collection:</strong> bytes_collected, total_ms_run, total_cycles, average_cycle_time_ms,
+     * last_run_time_ms</li>
+     * <li><strong>Cursor statistics:</strong> global_idle, global_total, index_capacity, index_total</li>
+     * <li><strong>Dialect statistics:</strong> Usage counts for each query dialect (1-4)</li>
+     * <li><strong>Error statistics:</strong> Indexing failures and errors per field</li>
+     * </ul>
+     *
+     * <p>
+     * Key use cases:
+     * </p>
+     * <ul>
+     * <li><strong>Monitoring:</strong> Track index health, memory usage, and performance</li>
+     * <li><strong>Debugging:</strong> Identify indexing failures and errors</li>
+     * <li><strong>Capacity planning:</strong> Analyze memory consumption and growth trends</li>
+     * <li><strong>Performance tuning:</strong> Review indexing time and garbage collection metrics</li>
+     * </ul>
+     *
+     * <p>
+     * <strong>Time complexity:</strong> O(1)
+     * </p>
+     *
+     * @param index the index name
+     * @return an IndexInfo object containing index information and statistics
+     * @since 6.8
+     * @see <a href="https://redis.io/docs/latest/commands/ft.info/">FT.INFO</a>
+     * @see #ftCreate(String, CreateArgs, List)
+     * @see #ftList()
+     * @see #ftDropindex(String)
+     */
+    @Experimental
+    IndexInfo<V> ftInfo(String index);
+
     /**
      * Dump synonym group contents.
      *

src/main/java/io/lettuce/core/protocol/CommandType.java

@@ -120,10 +120,11 @@ public enum CommandType implements ProtocolKeyword {
     FT_AGGREGATE("FT.AGGREGATE"), FT_ALIASADD("FT.ALIASADD"), FT_ALIASDEL("FT.ALIASDEL"), FT_ALIASUPDATE(
             "FT.ALIASUPDATE"), FT_ALTER("FT.ALTER"), FT_CREATE("FT.CREATE"), FT_CURSOR("FT.CURSOR"), FT_DICTADD(
                     "FT.DICTADD"), FT_DICTDEL("FT.DICTDEL"), FT_DICTDUMP("FT.DICTDUMP"), FT_DROPINDEX(
-                            "FT.DROPINDEX"), FT_EXPLAIN("FT.EXPLAIN"), FT_HYBRID("FT.HYBRID"), FT_LIST("FT._LIST"), FT_SEARCH(
-                                    "FT.SEARCH"), FT_SPELLCHECK("FT.SPELLCHECK"), FT_SUGADD("FT.SUGADD"), FT_SUGDEL(
-                                            "FT.SUGDEL"), FT_SUGGET("FT.SUGGET"), FT_SUGLEN("FT.SUGLEN"), FT_SYNDUMP(
-                                                    "FT.SYNDUMP"), FT_SYNUPDATE("FT.SYNUPDATE"), FT_TAGVALS("FT.TAGVALS"),
+                            "FT.DROPINDEX"), FT_EXPLAIN("FT.EXPLAIN"), FT_HYBRID("FT.HYBRID"), FT_INFO("FT.INFO"), FT_LIST(
+                                    "FT._LIST"), FT_SEARCH("FT.SEARCH"), FT_SPELLCHECK("FT.SPELLCHECK"), FT_SUGADD(
+                                            "FT.SUGADD"), FT_SUGDEL("FT.SUGDEL"), FT_SUGGET("FT.SUGGET"), FT_SUGLEN(
+                                                    "FT.SUGLEN"), FT_SYNDUMP("FT.SYNDUMP"), FT_SYNUPDATE(
+                                                            "FT.SYNUPDATE"), FT_TAGVALS("FT.TAGVALS"),
 
     // Others