Use system-wide LevelDB instead of bundled one

1 files changed, 0 insertions, 276 deletions

diff --git a/src/leveldb/table/table.cc b/src/leveldb/table/table.cc
deleted file mode 100644
index dbd6d3a1b..000000000
--- a/src/leveldb/table/table.cc
+++ /dev/null
@@ -1,276 +0,0 @@
-// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file. See the AUTHORS file for names of contributors.
-
-#include "leveldb/table.h"
-
-#include "leveldb/cache.h"
-#include "leveldb/comparator.h"
-#include "leveldb/env.h"
-#include "leveldb/filter_policy.h"
-#include "leveldb/options.h"
-#include "table/block.h"
-#include "table/filter_block.h"
-#include "table/format.h"
-#include "table/two_level_iterator.h"
-#include "util/coding.h"
-
-namespace leveldb {
-
-struct Table::Rep {
-  ~Rep() {
-    delete filter;
-    delete [] filter_data;
-    delete index_block;
-  }
-
-  Options options;
-  Status status;
-  RandomAccessFile* file;
-  uint64_t cache_id;
-  FilterBlockReader* filter;
-  const char* filter_data;
-
-  BlockHandle metaindex_handle;  // Handle to metaindex_block: saved from footer
-  Block* index_block;
-};
-
-Status Table::Open(const Options& options,
-                   RandomAccessFile* file,
-                   uint64_t size,
-                   Table** table) {
-  *table = NULL;
-  if (size < Footer::kEncodedLength) {
-    return Status::InvalidArgument("file is too short to be an sstable");
-  }
-
-  char footer_space[Footer::kEncodedLength];
-  Slice footer_input;
-  Status s = file->Read(size - Footer::kEncodedLength, Footer::kEncodedLength,
-                        &footer_input, footer_space);
-  if (!s.ok()) return s;
-
-  Footer footer;
-  s = footer.DecodeFrom(&footer_input);
-  if (!s.ok()) return s;
-
-  // Read the index block
-  BlockContents contents;
-  Block* index_block = NULL;
-  if (s.ok()) {
-    s = ReadBlock(file, ReadOptions(), footer.index_handle(), &contents);
-    if (s.ok()) {
-      index_block = new Block(contents);
-    }
-  }
-
-  if (s.ok()) {
-    // We've successfully read the footer and the index block: we're
-    // ready to serve requests.
-    Rep* rep = new Table::Rep;
-    rep->options = options;
-    rep->file = file;
-    rep->metaindex_handle = footer.metaindex_handle();
-    rep->index_block = index_block;
-    rep->cache_id = (options.block_cache ? options.block_cache->NewId() : 0);
-    rep->filter_data = NULL;
-    rep->filter = NULL;
-    *table = new Table(rep);
-    (*table)->ReadMeta(footer);
-  } else {
-    if (index_block) delete index_block;
-  }
-
-  return s;
-}
-
-void Table::ReadMeta(const Footer& footer) {
-  if (rep_->options.filter_policy == NULL) {
-    return;  // Do not need any metadata
-  }
-
-  // TODO(sanjay): Skip this if footer.metaindex_handle() size indicates
-  // it is an empty block.
-  ReadOptions opt;
-  BlockContents contents;
-  if (!ReadBlock(rep_->file, opt, footer.metaindex_handle(), &contents).ok()) {
-    // Do not propagate errors since meta info is not needed for operation
-    return;
-  }
-  Block* meta = new Block(contents);
-
-  Iterator* iter = meta->NewIterator(BytewiseComparator());
-  std::string key = "filter.";
-  key.append(rep_->options.filter_policy->Name());
-  iter->Seek(key);
-  if (iter->Valid() && iter->key() == Slice(key)) {
-    ReadFilter(iter->value());
-  }
-  delete iter;
-  delete meta;
-}
-
-void Table::ReadFilter(const Slice& filter_handle_value) {
-  Slice v = filter_handle_value;
-  BlockHandle filter_handle;
-  if (!filter_handle.DecodeFrom(&v).ok()) {
-    return;
-  }
-
-  // We might want to unify with ReadBlock() if we start
-  // requiring checksum verification in Table::Open.
-  ReadOptions opt;
-  BlockContents block;
-  if (!ReadBlock(rep_->file, opt, filter_handle, &block).ok()) {
-    return;
-  }
-  if (block.heap_allocated) {
-    rep_->filter_data = block.data.data();     // Will need to delete later
-  }
-  rep_->filter = new FilterBlockReader(rep_->options.filter_policy, block.data);
-}
-
-Table::~Table() {
-  delete rep_;
-}
-
-static void DeleteBlock(void* arg, void* ignored) {
-  delete reinterpret_cast<Block*>(arg);
-}
-
-static void DeleteCachedBlock(const Slice& key, void* value) {
-  Block* block = reinterpret_cast<Block*>(value);
-  delete block;
-}
-
-static void ReleaseBlock(void* arg, void* h) {
-  Cache* cache = reinterpret_cast<Cache*>(arg);
-  Cache::Handle* handle = reinterpret_cast<Cache::Handle*>(h);
-  cache->Release(handle);
-}
-
-// Convert an index iterator value (i.e., an encoded BlockHandle)
-// into an iterator over the contents of the corresponding block.
-Iterator* Table::BlockReader(void* arg,
-                             const ReadOptions& options,
-                             const Slice& index_value) {
-  Table* table = reinterpret_cast<Table*>(arg);
-  Cache* block_cache = table->rep_->options.block_cache;
-  Block* block = NULL;
-  Cache::Handle* cache_handle = NULL;
-
-  BlockHandle handle;
-  Slice input = index_value;
-  Status s = handle.DecodeFrom(&input);
-  // We intentionally allow extra stuff in index_value so that we
-  // can add more features in the future.
-
-  if (s.ok()) {
-    BlockContents contents;
-    if (block_cache != NULL) {
-      char cache_key_buffer[16];
-      EncodeFixed64(cache_key_buffer, table->rep_->cache_id);
-      EncodeFixed64(cache_key_buffer+8, handle.offset());
-      Slice key(cache_key_buffer, sizeof(cache_key_buffer));
-      cache_handle = block_cache->Lookup(key);
-      if (cache_handle != NULL) {
-        block = reinterpret_cast<Block*>(block_cache->Value(cache_handle));
-      } else {
-        s = ReadBlock(table->rep_->file, options, handle, &contents);
-        if (s.ok()) {
-          block = new Block(contents);
-          if (contents.cachable && options.fill_cache) {
-            cache_handle = block_cache->Insert(
-                key, block, block->size(), &DeleteCachedBlock);
-          }
-        }
-      }
-    } else {
-      s = ReadBlock(table->rep_->file, options, handle, &contents);
-      if (s.ok()) {
-        block = new Block(contents);
-      }
-    }
-  }
-
-  Iterator* iter;
-  if (block != NULL) {
-    iter = block->NewIterator(table->rep_->options.comparator);
-    if (cache_handle == NULL) {
-      iter->RegisterCleanup(&DeleteBlock, block, NULL);
-    } else {
-      iter->RegisterCleanup(&ReleaseBlock, block_cache, cache_handle);
-    }
-  } else {
-    iter = NewErrorIterator(s);
-  }
-  return iter;
-}
-
-Iterator* Table::NewIterator(const ReadOptions& options) const {
-  return NewTwoLevelIterator(
-      rep_->index_block->NewIterator(rep_->options.comparator),
-      &Table::BlockReader, const_cast<Table*>(this), options);
-}
-
-Status Table::InternalGet(const ReadOptions& options, const Slice& k,
-                          void* arg,
-                          void (*saver)(void*, const Slice&, const Slice&)) {
-  Status s;
-  Iterator* iiter = rep_->index_block->NewIterator(rep_->options.comparator);
-  iiter->Seek(k);
-  if (iiter->Valid()) {
-    Slice handle_value = iiter->value();
-    FilterBlockReader* filter = rep_->filter;
-    BlockHandle handle;
-    if (filter != NULL &&
-        handle.DecodeFrom(&handle_value).ok() &&
-        !filter->KeyMayMatch(handle.offset(), k)) {
-      // Not found
-    } else {
-      Slice handle = iiter->value();
-      Iterator* block_iter = BlockReader(this, options, iiter->value());
-      block_iter->Seek(k);
-      if (block_iter->Valid()) {
-        (*saver)(arg, block_iter->key(), block_iter->value());
-      }
-      s = block_iter->status();
-      delete block_iter;
-    }
-  }
-  if (s.ok()) {
-    s = iiter->status();
-  }
-  delete iiter;
-  return s;
-}
-
-
-uint64_t Table::ApproximateOffsetOf(const Slice& key) const {
-  Iterator* index_iter =
-      rep_->index_block->NewIterator(rep_->options.comparator);
-  index_iter->Seek(key);
-  uint64_t result;
-  if (index_iter->Valid()) {
-    BlockHandle handle;
-    Slice input = index_iter->value();
-    Status s = handle.DecodeFrom(&input);
-    if (s.ok()) {
-      result = handle.offset();
-    } else {
-      // Strange: we can't decode the block handle in the index block.
-      // We'll just return the offset of the metaindex block, which is
-      // close to the whole file size for this case.
-      result = rep_->metaindex_handle.offset();
-    }
-  } else {
-    // key is past the last key in the file.  Approximate the offset
-    // by returning the offset of the metaindex block (which is
-    // right near the end of the file).
-    result = rep_->metaindex_handle.offset();
-  }
-  delete index_iter;
-  return result;
-}
-
-}  // namespace leveldb