RAPPOR implementation

components/rappor/rappor.h

Index: components/rappor/rappor.h
diff --git a/components/rappor/rappor.h b/components/rappor/rappor.h
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+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef COMPONENTS_RAPPOR_RAPPOR_H_
+#define COMPONENTS_RAPPOR_RAPPOR_H_
+
+#include <assert.h>
+#include <limits.h>
+#include <math.h>
+
+#include <string>
+#include <vector>
+
+#include "components/rappor/bloom_filter.h"
+#include "components/rappor/rappor_parameters.h"
+
+// A Rappor is an object for collecting privacy preserving randomized reports.
+// Samples are added to named metrics through the use of the RAPPOR_SAMPLE
+// macro.  Samples can be either individual strings, or a vector of strings.
+
+namespace rappor {
+
+// A class that maintains parameters and bloom filter data for a Rappor Metric.

[Alexei Svitkine (slow), 2013/12/19 19:47:02]

Maybe it should be called RapporMetric? Rappor by itself doesn't convey a lot of
meaning.

[Steven Holte, 2013/12/20 03:03:55]

I'll pick this up in the next pass.

[Steven Holte, 2013/12/20 23:36:04]

Done.

+//
+// For a full description of the rappor metrics, see
+// http://www.chromium.org/developers/design-documents/rappor
+class Rappor {
+ public:
+  Rappor(const RapporParameters* parameters);
+
+  // Record additional samples in the bloom filter.
+  void AddSamples(const std::vector<std::string>& strings);
+  void AddSample(const std::string& str);
+
+  // Retrieves the current bloom filter bits.
+  const ByteVector& GetBytes() const;
+  const RapporParameters* parameters() const { return parameters_; }
+
+ private:
+  const RapporParameters* parameters_;
+  BloomFilter bloom_;
+};

[Alexei Svitkine (slow), 2013/12/19 19:47:02]

Nit: DISALLOW_COPY_AND_ASSIGN

[Steven Holte, 2013/12/20 03:03:55]

Done.

+
+}  // namespace rappor
+
+#endif  // COMPONENTS_RAPPOR_RAPPOR_H_