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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.
#ifndef CHROME_BROWSER_SYNC_TEST_INTEGRATION_RETRY_VERIFIER_H_
#define CHROME_BROWSER_SYNC_TEST_INTEGRATION_RETRY_VERIFIER_H_
#include "base/time/time.h"
namespace syncer {
namespace sessions {
class SyncSessionSnapshot;
} // namespace sessions
} // namespace syncer
// The minimum and maximum wait times for a retry. The actual retry would take
// place somewhere in this range. The algorithm that calculates the retry wait
// time uses rand functions.
struct DelayInfo {
int64 min_delay;
int64 max_delay;
};
// Class to verify retries take place using the exponential backoff algorithm.
class RetryVerifier {
public:
static const int kMaxRetry = 3;
RetryVerifier();
~RetryVerifier();
int retry_count() const { return retry_count_; }
// Initialize with the current sync session snapshot. Using the snapshot
// we will figure out when the first retry sync happened.
void Initialize(const syncer::sessions::SyncSessionSnapshot& snap);
void VerifyRetryInterval(
const syncer::sessions::SyncSessionSnapshot& snap);
bool done() const { return done_; }
bool Succeeded() const { return done() && success_; }
private:
int retry_count_;
base::Time last_sync_time_;
DelayInfo delay_table_[kMaxRetry];
bool success_;
bool done_;
DISALLOW_COPY_AND_ASSIGN(RetryVerifier);
};
#endif // CHROME_BROWSER_SYNC_TEST_INTEGRATION_RETRY_VERIFIER_H_
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