leveldb::anonymous_namespace{dumpfile.cc} Namespace Reference

Classes
class	CorruptionReporter
class	WriteBatchItemPrinter

Functions
bool	GuessType (const std::string &fname, FileType *type)
Status	PrintLogContents (Env *env, const std::string &fname, void(*func)(uint64_t, Slice, WritableFile *), WritableFile *dst)
static void	WriteBatchPrinter (uint64_t pos, Slice record, WritableFile *dst)
Status	DumpLog (Env *env, const std::string &fname, WritableFile *dst)
static void	VersionEditPrinter (uint64_t pos, Slice record, WritableFile *dst)
Status	DumpDescriptor (Env *env, const std::string &fname, WritableFile *dst)
Status	DumpTable (Env *env, const std::string &fname, WritableFile *dst)

Function Documentation

DumpDescriptor()

Status leveldb::anonymous_namespace{dumpfile.cc}::DumpDescriptor	(	Env *	env,
		const std::string &	fname,
		WritableFile *	dst
	)

Definition at line 139 of file dumpfile.cc.

                                                                           {
  return PrintLogContents(env, fname, VersionEditPrinter, dst);
}

Here is the call graph for this function:

Here is the caller graph for this function:

DumpLog()

Status leveldb::anonymous_namespace{dumpfile.cc}::DumpLog	(	Env *	env,
		const std::string &	fname,
		WritableFile *	dst
	)

Definition at line 118 of file dumpfile.cc.

                                                                    {
  return PrintLogContents(env, fname, WriteBatchPrinter, dst);
}

Here is the call graph for this function:

Here is the caller graph for this function:

DumpTable()

Status leveldb::anonymous_namespace{dumpfile.cc}::DumpTable	(	Env *	env,
		const std::string &	fname,
		WritableFile *	dst
	)

Definition at line 143 of file dumpfile.cc.

                                                                      {
  uint64_t file_size;
  RandomAccessFile* file = NULL;
  Table* table = NULL;
  Status s = env->GetFileSize(fname, &file_size);
  if (s.ok()) {
    s = env->NewRandomAccessFile(fname, &file);
  }
  if (s.ok()) {
    // We use the default comparator, which may or may not match the
    // comparator used in this database. However this should not cause
    // problems since we only use Table operations that do not require
    // any comparisons.  In particular, we do not call Seek or Prev.
    s = Table::Open(Options(), file, file_size, &table);
  }
  if (!s.ok()) {
    delete table;
    delete file;
    return s;
  }

  ReadOptions ro;
  ro.fill_cache = false;
  Iterator* iter = table->NewIterator(ro);
  std::string r;
  for (iter->SeekToFirst(); iter->Valid(); iter->Next()) {
    r.clear();
    ParsedInternalKey key;
    if (!ParseInternalKey(iter->key(), &key)) {
      r = "badkey '";
      AppendEscapedStringTo(&r, iter->key());
      r += "' => '";
      AppendEscapedStringTo(&r, iter->value());
      r += "'\n";
      dst->Append(r);
    } else {
      r = "'";
      AppendEscapedStringTo(&r, key.user_key);
      r += "' @ ";
      AppendNumberTo(&r, key.sequence);
      r += " : ";
      if (key.type == kTypeDeletion) {
        r += "del";
      } else if (key.type == kTypeValue) {
        r += "val";
      } else {
        AppendNumberTo(&r, key.type);
      }
      r += " => '";
      AppendEscapedStringTo(&r, iter->value());
      r += "'\n";
      dst->Append(r);
    }
  }
  s = iter->status();
  if (!s.ok()) {
    dst->Append("iterator error: " + s.ToString() + "\n");
  }

  delete iter;
  delete table;
  delete file;
  return Status::OK();
}

Here is the call graph for this function:

Here is the caller graph for this function:

GuessType()

bool leveldb::anonymous_namespace{dumpfile.cc}::GuessType	(	const std::string &	fname,
		FileType *	type
	)

Definition at line 23 of file dumpfile.cc.

                                                       {
  size_t pos = fname.rfind('/');
  std::string basename;
  if (pos == std::string::npos) {
    basename = fname;
  } else {
    basename = std::string(fname.data() + pos + 1, fname.size() - pos - 1);
  }
  uint64_t ignored;
  return ParseFileName(basename, &ignored, type);
}

Here is the call graph for this function:

Here is the caller graph for this function:

PrintLogContents()

Status leveldb::anonymous_namespace{dumpfile.cc}::PrintLogContents	(	Env *	env,
		const std::string &	fname,
		void(*)(uint64_t, Slice, WritableFile *)	func,
		WritableFile *	dst
	)

Definition at line 50 of file dumpfile.cc.

                                           {
  SequentialFile* file;
  Status s = env->NewSequentialFile(fname, &file);
  if (!s.ok()) {
    return s;
  }
  CorruptionReporter reporter;
  reporter.dst_ = dst;
  log::Reader reader(file, &reporter, true, 0);
  Slice record;
  std::string scratch;
  while (reader.ReadRecord(&record, &scratch)) {
    (*func)(reader.LastRecordOffset(), record, dst);
  }
  delete file;
  return Status::OK();
}

Here is the call graph for this function:

Here is the caller graph for this function:

VersionEditPrinter()

static void leveldb::anonymous_namespace{dumpfile.cc}::VersionEditPrinter ( uint64_t  pos, Slice  record, WritableFile *  dst  )

static

Definition at line 124 of file dumpfile.cc.

                                                                              {
  std::string r = "--- offset ";
  AppendNumberTo(&r, pos);
  r += "; ";
  VersionEdit edit;
  Status s = edit.DecodeFrom(record);
  if (!s.ok()) {
    r += s.ToString();
    r.push_back('\n');
  } else {
    r += edit.DebugString();
  }
  dst->Append(r);
}

Here is the call graph for this function:

Here is the caller graph for this function:

WriteBatchPrinter()

static void leveldb::anonymous_namespace{dumpfile.cc}::WriteBatchPrinter ( uint64_t  pos, Slice  record, WritableFile *  dst  )

static

Definition at line 93 of file dumpfile.cc.

                                                                             {
  std::string r = "--- offset ";
  AppendNumberTo(&r, pos);
  r += "; ";
  if (record.size() < 12) {
    r += "log record length ";
    AppendNumberTo(&r, record.size());
    r += " is too small\n";
    dst->Append(r);
    return;
  }
  WriteBatch batch;
  WriteBatchInternal::SetContents(&batch, record);
  r += "sequence ";
  AppendNumberTo(&r, WriteBatchInternal::Sequence(&batch));
  r.push_back('\n');
  dst->Append(r);
  WriteBatchItemPrinter batch_item_printer;
  batch_item_printer.dst_ = dst;
  Status s = batch.Iterate(&batch_item_printer);
  if (!s.ok()) {
    dst->Append("  error: " + s.ToString() + "\n");
  }
}

Here is the call graph for this function:

Here is the caller graph for this function: