1 files changed, 76 insertions, 0 deletions
diff --git a/src/common/bloom_filter.cc b/src/common/bloom_filter.cc
new file mode 100644
index 00000000000..f602b80149e
--- /dev/null
+++ b/src/common/bloom_filter.cc
@@ -0,0 +1,76 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#include "include/types.h"
+#include "common/bloom_filter.hpp"
+
+void bloom_filter::encode(bufferlist& bl) const
+{
+  ENCODE_START(1, 1, bl);
+  ::encode((uint64_t)salt_count_, bl);
+  ::encode((uint64_t)table_size_, bl);
+  ::encode((uint64_t)inserted_element_count_, bl);
+  ::encode((uint64_t)random_seed_, bl);
+  bufferptr bp((const char*)bit_table_, raw_table_size_);
+  ::encode(bp, bl);
+  ENCODE_FINISH(bl);
+}
+
+void bloom_filter::decode(bufferlist::iterator& p)
+{
+  DECODE_START(1, p);
+  uint64_t v;
+  ::decode(v, p);
+  salt_count_ = v;
+  ::decode(v, p);
+  table_size_ = v;
+  ::decode(v, p);
+  inserted_element_count_ = v;
+  ::decode(v, p);
+  random_seed_ = v;
+  bufferlist t;
+  ::decode(t, p);
+
+  salt_.clear();
+  generate_unique_salt();
+  raw_table_size_ = t.length();
+  assert(raw_table_size_ == table_size_ / bits_per_char);
+  delete bit_table_;
+  bit_table_ = new cell_type[raw_table_size_];
+  t.copy(0, raw_table_size_, (char *)bit_table_);
+
+  DECODE_FINISH(p);
+}
+
+void bloom_filter::dump(Formatter *f) const
+{
+  f->dump_unsigned("salt_count", salt_count_);
+  f->dump_unsigned("table_size", table_size_);
+  f->dump_unsigned("raw_table_size", raw_table_size_);
+  f->dump_unsigned("insert_count", inserted_element_count_);
+  f->dump_unsigned("random_seed", random_seed_);
+
+  f->open_array_section("salt_table");
+  for (std::vector<bloom_type>::const_iterator i = salt_.begin(); i != salt_.end(); ++i)
+    f->dump_unsigned("salt", *i);
+  f->close_section();
+
+  f->open_array_section("bit_table");
+  for (unsigned i = 0; i < raw_table_size_; ++i)
+    f->dump_unsigned("byte", (unsigned)bit_table_[i]);
+  f->close_section();
+}
+
+void bloom_filter::generate_test_instances(list<bloom_filter*>& ls)
+{
+  ls.push_back(new bloom_filter(10, .5, 1));
+  ls.push_back(new bloom_filter(10, .5, 1));
+  ls.back()->insert("foo");
+  ls.back()->insert("bar");
+  ls.push_back(new bloom_filter(50, .5, 1));
+  ls.back()->insert("foo");
+  ls.back()->insert("bar");
+  ls.back()->insert("baz");
+  ls.back()->insert("boof");
+  ls.back()->insert("boogggg");
+}