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// Copyright 2013 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.
#include "base/memory/scoped_ptr.h"
#include "base/metrics/field_trial.h"
namespace {
// Name of field trial for that sends gzipped UMA protobufs.
const char kTrialName[] = "GZippedProtobufs";
// Divisor for the gzipped protobufs trial.
const int kTrialDivisor = 100;
// Quotient for the gzipped protobufs trial.
const int kTrialQuotient = 50;
// Name of the group with gzipped protobufs.
const char kGroupName[] = "GzippedProtobufsEnabled";
// Name of the group with non-gzipped protobufs.
const char kControlGroupName[] = "GzippedProtobufsDisabled";
// This is set to true if we land in the Finch group that will be sending
// protobufs after compressing them.
bool should_gzip_protobufs = false;
} // namespace
namespace metrics {
void CreateGzippedProtobufsFieldTrial() {
scoped_refptr<base::FieldTrial> gzipped_protobufs_trial =
base::FieldTrialList::FactoryGetFieldTrial(
kTrialName,
kTrialDivisor,
kControlGroupName,
2013,
9,
1,
NULL);
gzipped_protobufs_trial->UseOneTimeRandomization();
int gzipped_protobufs_group = gzipped_protobufs_trial->AppendGroup(
kGroupName,
kTrialQuotient);
should_gzip_protobufs =
gzipped_protobufs_trial->group() == gzipped_protobufs_group;
}
bool ShouldGzipProtobufsBeforeUploading() {
return should_gzip_protobufs;
}
} // namespace metrics
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