SERVER-61177 add KVEngine::dump() and StorageEngine::dump()

10 files changed, 28 insertions, 0 deletions

diff --git a/src/mongo/db/storage/devnull/devnull_kv_engine.h b/src/mongo/db/storage/devnull/devnull_kv_engine.h
index 7327d8541fc..86fac5527af 100644
--- a/src/mongo/db/storage/devnull/devnull_kv_engine.h
+++ b/src/mongo/db/storage/devnull/devnull_kv_engine.h
@@ -161,6 +161,8 @@ public:
 
     virtual void setPinnedOplogTimestamp(const Timestamp& pinnedTimestamp) {}
 
+    void dump() const override {}
+
     // This sets the results of the backup cursor for unit tests.
     void setBackupBlocks_forTest(std::vector<StorageEngine::BackupBlock> newBackupBlocks) {
         _mockBackupBlocks = newBackupBlocks;
diff --git a/src/mongo/db/storage/ephemeral_for_test/ephemeral_for_test_kv_engine.h b/src/mongo/db/storage/ephemeral_for_test/ephemeral_for_test_kv_engine.h
index 5d8db6a1c56..517bcf16df9 100644
--- a/src/mongo/db/storage/ephemeral_for_test/ephemeral_for_test_kv_engine.h
+++ b/src/mongo/db/storage/ephemeral_for_test/ephemeral_for_test_kv_engine.h
@@ -206,6 +206,8 @@ public:
 
     void setPinnedOplogTimestamp(const Timestamp& pinnedTimestamp) {}
 
+    void dump() const override {}
+
 private:
     void _cleanHistory(WithLock);
 
diff --git a/src/mongo/db/storage/kv/kv_drop_pending_ident_reaper_test.cpp b/src/mongo/db/storage/kv/kv_drop_pending_ident_reaper_test.cpp
index ab5a81442e1..df4470cd80d 100644
--- a/src/mongo/db/storage/kv/kv_drop_pending_ident_reaper_test.cpp
+++ b/src/mongo/db/storage/kv/kv_drop_pending_ident_reaper_test.cpp
@@ -130,6 +130,8 @@ public:
 
     void setPinnedOplogTimestamp(const Timestamp& pinnedTimestamp) {}
 
+    void dump() const override {}
+
     // List of ident names removed using dropIdent().
     std::vector<std::string> droppedIdents;
 
diff --git a/src/mongo/db/storage/kv/kv_engine.h b/src/mongo/db/storage/kv/kv_engine.h
index 5a302b47c0f..2503db506b8 100644
--- a/src/mongo/db/storage/kv/kv_engine.h
+++ b/src/mongo/db/storage/kv/kv_engine.h
@@ -402,6 +402,11 @@ public:
     virtual void setPinnedOplogTimestamp(const Timestamp& pinnedTimestamp) = 0;
 
     /**
+     * See `StorageEngine::dump`
+     */
+    virtual void dump() const = 0;
+
+    /**
      * The destructor will never be called from mongod, but may be called from tests.
      * Engines may assume that this will only be called in the case of clean shutdown, even if
      * cleanShutdown() hasn't been called.
diff --git a/src/mongo/db/storage/storage_engine.h b/src/mongo/db/storage/storage_engine.h
index c5dd5d78e50..f7c706b96a6 100644
--- a/src/mongo/db/storage/storage_engine.h
+++ b/src/mongo/db/storage/storage_engine.h
@@ -678,6 +678,11 @@ public:
      * it.
      */
     virtual void setPinnedOplogTimestamp(const Timestamp& pinnedTimestamp) = 0;
+
+    /**
+     * Instructs the storage engine to dump its internal state.
+     */
+    virtual void dump() const = 0;
 };
 
 }  // namespace mongo
diff --git a/src/mongo/db/storage/storage_engine_impl.cpp b/src/mongo/db/storage/storage_engine_impl.cpp
index d98db8bda77..b4f7ba4c807 100644
--- a/src/mongo/db/storage/storage_engine_impl.cpp
+++ b/src/mongo/db/storage/storage_engine_impl.cpp
@@ -1295,4 +1295,8 @@ const DurableCatalog* StorageEngineImpl::getCatalog() const {
     return _catalog.get();
 }
 
+void StorageEngineImpl::dump() const {
+    _engine->dump();
+}
+
 }  // namespace mongo
diff --git a/src/mongo/db/storage/storage_engine_impl.h b/src/mongo/db/storage/storage_engine_impl.h
index f0c4d1229bf..f2b69e8d2ee 100644
--- a/src/mongo/db/storage/storage_engine_impl.h
+++ b/src/mongo/db/storage/storage_engine_impl.h
@@ -357,6 +357,8 @@ public:
 
     void setPinnedOplogTimestamp(const Timestamp& pinnedTimestamp) override;
 
+    void dump() const override;
+
 private:
     using CollIter = std::list<std::string>::iterator;
 
diff --git a/src/mongo/db/storage/storage_engine_mock.h b/src/mongo/db/storage/storage_engine_mock.h
index 881cd26979f..7032a3afe87 100644
--- a/src/mongo/db/storage/storage_engine_mock.h
+++ b/src/mongo/db/storage/storage_engine_mock.h
@@ -202,6 +202,8 @@ public:
     void unpinOldestTimestamp(const std::string& requestingServiceName) final {}
 
     void setPinnedOplogTimestamp(const Timestamp& pinnedTimestamp) final {}
+
+    void dump() const final {}
 };
 
 }  // namespace mongo
diff --git a/src/mongo/db/storage/wiredtiger/wiredtiger_kv_engine.cpp b/src/mongo/db/storage/wiredtiger/wiredtiger_kv_engine.cpp
index 85bc7b91ba2..8dc7a38533c 100644
--- a/src/mongo/db/storage/wiredtiger/wiredtiger_kv_engine.cpp
+++ b/src/mongo/db/storage/wiredtiger/wiredtiger_kv_engine.cpp
@@ -2524,4 +2524,6 @@ std::uint64_t WiredTigerKVEngine::_getCheckpointTimestamp() const {
     return tmp;
 }
 
+void WiredTigerKVEngine::dump() const {}
+
 }  // namespace mongo
diff --git a/src/mongo/db/storage/wiredtiger/wiredtiger_kv_engine.h b/src/mongo/db/storage/wiredtiger/wiredtiger_kv_engine.h
index 8d951088935..1301a0c07b8 100644
--- a/src/mongo/db/storage/wiredtiger/wiredtiger_kv_engine.h
+++ b/src/mongo/db/storage/wiredtiger/wiredtiger_kv_engine.h
@@ -361,6 +361,8 @@ public:
 
     void setPinnedOplogTimestamp(const Timestamp& pinnedTimestamp) override;
 
+    void dump() const override;
+
 private:
     class WiredTigerSessionSweeper;