SERVER-37662: Add backupCursor state to serverStatus.

4 files changed, 15 insertions, 2 deletions

diff --git a/src/mongo/db/storage/SConscript b/src/mongo/db/storage/SConscript
index 366a429e58d..ee0692c8e3c 100644
--- a/src/mongo/db/storage/SConscript
+++ b/src/mongo/db/storage/SConscript
@@ -228,6 +228,7 @@ env.Library(
     ],
     LIBDEPS_PRIVATE=[
         '$BUILD_DIR/mongo/db/commands/server_status',
+        'backup_cursor_hooks'
     ]
 )
 
diff --git a/src/mongo/db/storage/backup_cursor_hooks.cpp b/src/mongo/db/storage/backup_cursor_hooks.cpp
index d4c4a863fb2..1cd88ed1552 100644
--- a/src/mongo/db/storage/backup_cursor_hooks.cpp
+++ b/src/mongo/db/storage/backup_cursor_hooks.cpp
@@ -84,4 +84,8 @@ BackupCursorState BackupCursorHooks::openBackupCursor(OperationContext* opCtx) {
 void BackupCursorHooks::closeBackupCursor(OperationContext* opCtx, std::uint64_t cursorId) {
     MONGO_UNREACHABLE;
 }
+
+bool BackupCursorHooks::isBackupCursorOpen() const {
+    return false;
+}
 }  // namespace mongo
diff --git a/src/mongo/db/storage/backup_cursor_hooks.h b/src/mongo/db/storage/backup_cursor_hooks.h
index 7344e5d391e..5bf079e2e82 100644
--- a/src/mongo/db/storage/backup_cursor_hooks.h
+++ b/src/mongo/db/storage/backup_cursor_hooks.h
@@ -64,6 +64,8 @@ public:
     virtual BackupCursorState openBackupCursor(OperationContext* opCtx);
 
     virtual void closeBackupCursor(OperationContext* opCtx, std::uint64_t cursorId);
+
+    virtual bool isBackupCursorOpen() const;
 };
 
 }  // namespace mongo
diff --git a/src/mongo/db/storage/storage_init.cpp b/src/mongo/db/storage/storage_init.cpp
index 782965e206c..2b43868557b 100644
--- a/src/mongo/db/storage/storage_init.cpp
+++ b/src/mongo/db/storage/storage_init.cpp
@@ -34,6 +34,7 @@
 #include "mongo/db/commands/server_status.h"
 #include "mongo/db/operation_context.h"
 #include "mongo/db/service_context.h"
+#include "mongo/db/storage/backup_cursor_hooks.h"
 #include "mongo/db/storage/storage_engine.h"
 #include "mongo/db/storage/storage_options.h"
 
@@ -54,7 +55,10 @@ public:
 
     virtual BSONObj generateSection(OperationContext* opCtx,
                                     const BSONElement& configElement) const {
-        auto engine = opCtx->getClient()->getServiceContext()->getStorageEngine();
+        auto svcCtx = opCtx->getClient()->getServiceContext();
+        auto engine = svcCtx->getStorageEngine();
+        auto backupCursorHooks = BackupCursorHooks::get(svcCtx);
+
         return BSON("name" << storageGlobalParams.engine << "supportsCommittedReads"
                            << engine->supportsReadConcernMajority()
                            << "supportsSnapshotReadConcern"
@@ -62,7 +66,9 @@ public:
                            << "readOnly"
                            << storageGlobalParams.readOnly
                            << "persistent"
-                           << !engine->isEphemeral());
+                           << !engine->isEphemeral()
+                           << "backupCursorOpen"
+                           << backupCursorHooks->isBackupCursorOpen());
     }
 
 } storageSSS;