Add quarkdb-version command to just retrieve the version of a running node

.ignore

+build/
 deps/rocksdb/
 deps/backward-cpp/
 deps/googletest/

src/Commands.cc

@@ -137,6 +137,7 @@ struct cmdMapInit {
     redis_cmd_map["quarkdb_manual_compaction"] = {RedisCommand::QUARKDB_MANUAL_COMPACTION, CommandType::QUARKDB};
     redis_cmd_map["quarkdb_level_stats"] = {RedisCommand::QUARKDB_LEVEL_STATS, CommandType::QUARKDB};
     redis_cmd_map["quarkdb_compression_stats"] = {RedisCommand::QUARKDB_COMPRESSION_STATS, CommandType::QUARKDB};
+    redis_cmd_map["quarkdb_version"] = {RedisCommand::QUARKDB_VERSION, CommandType::QUARKDB};
 
     redis_cmd_map["recovery_info"] = {RedisCommand::RECOVERY_INFO, CommandType::RECOVERY};
     redis_cmd_map["recovery_set"] = {RedisCommand::RECOVERY_SET, CommandType::RECOVERY};

src/Commands.hh

@@ -142,6 +142,7 @@ enum class RedisCommand {
   QUARKDB_MANUAL_COMPACTION,
   QUARKDB_LEVEL_STATS,
   QUARKDB_COMPRESSION_STATS,
+  QUARKDB_VERSION,
 
   RECOVERY_GET,
   RECOVERY_SET,

src/QuarkDBNode.cc

@@ -130,6 +130,9 @@ LinkStatus QuarkDBNode::dispatch(Connection *conn, RedisRequest &req) {
     case RedisCommand::QUARKDB_INFO: {
       return conn->statusVector(this->info().toVector());
     }
+    case RedisCommand::QUARKDB_VERSION: {
+      return conn->string(VERSION_FULL_STRING);
+    }
     case RedisCommand::CONVERT_STRING_TO_INT:
     case RedisCommand::CONVERT_INT_TO_STRING: {
       return conn->raw(handleConversion(req));

test/e2e.cc

@@ -27,6 +27,7 @@
 #include "raft/RaftCommitTracker.hh"
 #include "raft/RaftConfig.hh"
 #include "raft/RaftContactDetails.hh"
+#include "Version.hh"
 #include "Poller.hh"
 #include "Configuration.hh"
 #include "QuarkDBNode.hh"
@@ -1192,6 +1193,7 @@ TEST_F(Raft_e2e, smove) {
   ASSERT_REPLY(tunnel(leaderID)->exec("smembers", "set1"), make_vec("i2", "i3", "i4", "i5"));
   ASSERT_REPLY(tunnel(leaderID)->exec("smembers", "set2"), make_vec("i1", "t1", "t2", "t3", "t4", "t5"));
   ASSERT_REPLY(tunnel(leaderID)->exec("quarkdb-manual-compaction"), "OK");
+  ASSERT_REPLY(tunnel(leaderID)->exec("quarkdb-version"), VERSION_FULL_STRING);
   qdb_info(qclient::describeRedisReply(tunnel(leaderID)->exec("quarkdb-level-stats").get()));
   qdb_info(qclient::describeRedisReply(tunnel(leaderID)->exec("quarkdb-compression-stats").get()));
 }