sst_dump support cuckoo table (facebook#12098)

Summary:
facebook#11446

Support Cuckoo Table format in sst_dump.

Pull Request resolved: facebook#12098

Reviewed By: jowlyzhang

Differential Revision: D51594094

Pulled By: ajkr

fbshipit-source-id: ba9092818bc3cc0f207b000391aa21d564570df2

table/sst_file_dumper.cc

@@ -71,6 +71,7 @@ extern const uint64_t kBlockBasedTableMagicNumber;
 extern const uint64_t kLegacyBlockBasedTableMagicNumber;
 extern const uint64_t kPlainTableMagicNumber;
 extern const uint64_t kLegacyPlainTableMagicNumber;
+extern const uint64_t kCuckooTableMagicNumber;
 
 const char* testFileName = "test_file_name";
 
@@ -123,9 +124,15 @@ Status SstFileDumper::GetTableReader(const std::string& file_path) {
 
   if (s.ok()) {
     if (magic_number == kPlainTableMagicNumber ||
-        magic_number == kLegacyPlainTableMagicNumber) {
+        magic_number == kLegacyPlainTableMagicNumber ||
+        magic_number == kCuckooTableMagicNumber) {
       soptions_.use_mmap_reads = true;
 
+      if (magic_number == kCuckooTableMagicNumber) {
+        fopts = soptions_;
+        fopts.temperature = file_temp_;
+      }
+
       fs->NewRandomAccessFile(file_path, fopts, &file, nullptr);
       file_.reset(new RandomAccessFileReader(std::move(file), file_path));
     }
@@ -426,6 +433,13 @@ Status SstFileDumper::SetTableOptionsByMagicNumber(
     if (!silent_) {
       fprintf(stdout, "Sst file format: plain table\n");
     }
+  } else if (table_magic_number == kCuckooTableMagicNumber) {
+    ioptions_.allow_mmap_reads = true;
+
+    options_.table_factory.reset(NewCuckooTableFactory());
+    if (!silent_) {
+      fprintf(stdout, "Sst file format: cuckoo table\n");
+    }
   } else {
     char error_msg_buffer[80];
     snprintf(error_msg_buffer, sizeof(error_msg_buffer) - 1,

table/sst_file_dumper.h

@@ -88,7 +88,7 @@ class SstFileDumper {
   std::unique_ptr<TableReader> table_reader_;
   std::unique_ptr<RandomAccessFileReader> file_;
 
-  const ImmutableOptions ioptions_;
+  ImmutableOptions ioptions_;
   const MutableCFOptions moptions_;
   ReadOptions read_options_;
   InternalKeyComparator internal_comparator_;