c/topic_table: additional logging in topics_table

Signed-off-by: Michal Maslanka <michal@redpanda.com>

src/v/cluster/topic_table.cc

@@ -240,6 +240,14 @@ topic_table::apply(create_partition_cmd cmd, model::offset offset) {
 
 ss::future<std::error_code>
 topic_table::apply(move_partition_replicas_cmd cmd, model::offset o) {
+    vlog(
+      clusterlog.trace,
+      "applying move partition replicas command: key: {}, value: {}, "
+      "with revision: {}",
+      cmd.key,
+      cmd.value,
+      o);
+
     _last_applied_revision_id = model::revision_id(o);
     auto tp = _topics.find(model::topic_namespace_view(cmd.key));
     if (tp == _topics.end()) {
@@ -291,6 +299,14 @@ static replicas_revision_map update_replicas_revisions(
 
 ss::future<std::error_code>
 topic_table::apply(finish_moving_partition_replicas_cmd cmd, model::offset o) {
+    vlog(
+      clusterlog.trace,
+      "applying finish moving partition replicas command: key: {}, value: {}, "
+      "with revision: {}",
+      cmd.key,
+      cmd.value,
+      o);
+
     _last_applied_revision_id = model::revision_id(o);
     auto tp = _topics.find(model::topic_namespace_view(cmd.key));
     if (tp == _topics.end()) {
@@ -330,6 +346,12 @@ topic_table::apply(finish_moving_partition_replicas_cmd cmd, model::offset o) {
           it->second.get_update_revision());
     }
     p_meta_it->second.last_update_finished_revision = model::revision_id{o};
+    vlog(
+      clusterlog.trace,
+      "finishing {} in progress update: {} with revision: {}",
+      cmd.key,
+      it->second,
+      o);
 
     _updates_in_progress.erase(it);
 
@@ -1563,4 +1585,18 @@ size_t topic_table::get_node_partition_count(model::node_id id) const {
     return cnt;
 }
 
+std::ostream&
+operator<<(std::ostream& o, const topic_table::in_progress_update& u) {
+    fmt::print(
+      o,
+      "{{previous_replica_set: {}, target_replica_set: {}, state: {}, "
+      "update_revision: {}, last_command_revision: {}}}",
+      u._previous_replicas,
+      u._target_replicas,
+      u._state,
+      u._update_revision,
+      u._last_cmd_revision);
+    return o;
+}
+
 } // namespace cluster

src/v/cluster/topic_table.h

@@ -23,6 +23,7 @@
 #include <absl/container/flat_hash_map.h>
 #include <absl/container/node_hash_map.h>
 
+#include <ostream>
 #include <span>
 #include <type_traits>
 
@@ -175,6 +176,8 @@ class topic_table {
         }
 
     private:
+        friend std::ostream&
+        operator<<(std::ostream&, const in_progress_update&);
         std::vector<model::broker_shard> _previous_replicas;
         std::vector<model::broker_shard> _target_replicas;
         reconfiguration_state _state;