SERVER-50435 Restore constness to getInitialDataTimestamp

Author: ajdavis

src/mongo/db/storage/kv/kv_engine.h

@@ -332,7 +332,7 @@ class KVEngine {
     /**
      * See `StorageEngine::getInitialDataTimestamp`
      */
-    virtual Timestamp getInitialDataTimestamp() {
+    virtual Timestamp getInitialDataTimestamp() const {
         return Timestamp();
     }
 

src/mongo/db/storage/storage_engine.h

@@ -503,7 +503,7 @@ class StorageEngine {
     /**
      * Returns the initial data timestamp.
      */
-    virtual Timestamp getInitialDataTimestamp() = 0;
+    virtual Timestamp getInitialDataTimestamp() const = 0;
 
     /**
      * Uses the current stable timestamp to set the oldest timestamp for which the storage engine

src/mongo/db/storage/storage_engine_impl.cpp

@@ -874,7 +874,7 @@ void StorageEngineImpl::setInitialDataTimestamp(Timestamp initialDataTimestamp)
     _engine->setInitialDataTimestamp(initialDataTimestamp);
 }
 
-Timestamp StorageEngineImpl::getInitialDataTimestamp() {
+Timestamp StorageEngineImpl::getInitialDataTimestamp() const {
     return _engine->getInitialDataTimestamp();
 }
 

src/mongo/db/storage/storage_engine_impl.h

@@ -120,7 +120,7 @@ class StorageEngineImpl final : public StorageEngineInterface, public StorageEng
 
     virtual void setInitialDataTimestamp(Timestamp initialDataTimestamp) override;
 
-    virtual Timestamp getInitialDataTimestamp() override;
+    virtual Timestamp getInitialDataTimestamp() const override;
 
     virtual void setOldestTimestampFromStable() override;
 

src/mongo/db/storage/storage_engine_mock.h

@@ -135,7 +135,7 @@ class StorageEngineMock : public StorageEngine {
     }
     void setStableTimestamp(Timestamp stableTimestamp, bool force = false) final {}
     void setInitialDataTimestamp(Timestamp timestamp) final {}
-    Timestamp getInitialDataTimestamp() {
+    Timestamp getInitialDataTimestamp() const override {
         return Timestamp();
     }
     void setOldestTimestampFromStable() final {}

src/mongo/db/storage/wiredtiger/wiredtiger_kv_engine.cpp

@@ -2144,7 +2144,7 @@ void WiredTigerKVEngine::setInitialDataTimestamp(Timestamp initialDataTimestamp)
     _initialDataTimestamp.store(initialDataTimestamp.asULL());
 }
 
-Timestamp WiredTigerKVEngine::getInitialDataTimestamp() {
+Timestamp WiredTigerKVEngine::getInitialDataTimestamp() const {
     return Timestamp(_initialDataTimestamp.load());
 }
 

src/mongo/db/storage/wiredtiger/wiredtiger_kv_engine.h

@@ -237,7 +237,7 @@ class WiredTigerKVEngine final : public KVEngine {
 
     void setInitialDataTimestamp(Timestamp initialDataTimestamp) override;
 
-    Timestamp getInitialDataTimestamp() override;
+    Timestamp getInitialDataTimestamp() const override;
 
     void setOldestTimestampFromStable() override;