DB::GetOptions()

Summary: We need access to options for BackupableDB

Test Plan: make check

Reviewers: dhruba

Reviewed By: dhruba

CC: leveldb, reconnect.grayhat

Differential Revision: https://reviews.facebook.net/D14331

Author: igorcanadi

db/db_impl.cc

@@ -3135,6 +3135,10 @@ Env* DBImpl::GetEnv() const {
   return env_;
 }
 
+const Options& DBImpl::GetOptions() const {
+  return options_;
+}
+
 bool DBImpl::GetProperty(const Slice& property, std::string* value) {
   value->clear();
 

db/db_impl.h

@@ -68,6 +68,7 @@ class DBImpl : public DB {
   virtual int MaxMemCompactionLevel();
   virtual int Level0StopWriteTrigger();
   virtual Env* GetEnv() const;
+  virtual const Options& GetOptions() const;
   virtual Status Flush(const FlushOptions& options);
   virtual Status DisableFileDeletions();
   virtual Status EnableFileDeletions();

db/db_test.cc

@@ -4466,6 +4466,10 @@ class ModelDB: public DB {
     return nullptr;
   }
 
+  virtual const Options& GetOptions() const {
+    return options_;
+  }
+
   virtual Status Flush(const rocksdb::FlushOptions& options) {
     Status ret;
     return ret;

include/rocksdb/db.h

@@ -231,6 +231,9 @@ class DB {
   // Get Env object from the DB
   virtual Env* GetEnv() const = 0;
 
+  // Get DB Options that we use
+  virtual const Options& GetOptions() const = 0;
+
   // Flush all mem-table data.
   virtual Status Flush(const FlushOptions& options) = 0;
 

include/utilities/stackable_db.h

@@ -107,6 +107,10 @@ class StackableDB : public DB {
     return db_->GetEnv();
   }
 
+  virtual const Options& GetOptions() const override {
+    return db_->GetOptions();
+  }
+
   virtual Status Flush(const FlushOptions& fopts) override {
     return db_->Flush(fopts);
   }

utilities/ttl/db_ttl.cc

@@ -258,6 +258,10 @@ Env* DBWithTTL::GetEnv() const {
   return db_->GetEnv();
 }
 
+const Options& DBWithTTL::GetOptions() const {
+  return db_->GetOptions();
+}
+
 Status DBWithTTL::Flush(const FlushOptions& fopts) {
   return db_->Flush(fopts);
 }

utilities/ttl/db_ttl.h

@@ -69,6 +69,8 @@ class DBWithTTL : public StackableDB {
 
   virtual Env* GetEnv() const;
 
+  virtual const Options& GetOptions() const;
+
   virtual Status Flush(const FlushOptions& fopts);
 
   virtual Status DisableFileDeletions();