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70 lines
2.5 KiB
C++
70 lines
2.5 KiB
C++
// Copyright 2017 The Chromium Authors
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef NET_REPORTING_REPORTING_ENDPOINT_MANAGER_H_
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#define NET_REPORTING_REPORTING_ENDPOINT_MANAGER_H_
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#include <memory>
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#include "net/base/net_export.h"
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#include "net/base/rand_callback.h"
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#include "net/reporting/reporting_endpoint.h"
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class GURL;
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namespace base {
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class TickClock;
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}
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namespace net {
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class NetworkAnonymizationKey;
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class ReportingCache;
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class ReportingDelegate;
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struct ReportingEndpoint;
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struct ReportingPolicy;
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// Keeps track of which endpoints are pending (have active delivery attempts to
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// them) or in exponential backoff after one or more failures, and chooses an
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// endpoint from an endpoint group to receive reports for an origin.
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class NET_EXPORT ReportingEndpointManager {
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public:
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// Maximum size of the backoff cache. This is deliberately much larger than is
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// likely necessary - the only goal is to prevent it from growing without
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// bound, while preventing repeatedly trying to upload data to down servrs.
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// Public for tests.
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static constexpr int kMaxEndpointBackoffCacheSize = 200;
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// The ReportingEndpointManager must not be used after any of the objects
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// passed to its constructor are destroyed.
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static std::unique_ptr<ReportingEndpointManager> Create(
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const ReportingPolicy* policy,
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const base::TickClock* tick_clock,
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const ReportingDelegate* delegate,
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ReportingCache* cache,
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const RandIntCallback& rand_callback);
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virtual ~ReportingEndpointManager();
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// Finds an endpoint that applies to deliveries to the group identified by
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// |group_key| that are not expired or in exponential backoff from failed
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// requests. The returned endpoint may have been configured by a superdomain
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// of the group's origin. Deliberately chooses an endpoint randomly to ensure
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// sites aren't relying on any sort of fallback ordering. If no suitable
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// endpoint was found, returns an endpoint with is_valid() false.
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virtual const ReportingEndpoint FindEndpointForDelivery(
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const ReportingEndpointGroupKey& group_key) = 0;
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// Informs the EndpointManager of a successful or unsuccessful request made to
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// |endpoint| so it can manage exponential backoff of failing endpoints.
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virtual void InformOfEndpointRequest(
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const NetworkAnonymizationKey& network_anonymization_key,
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const GURL& endpoint,
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bool succeeded) = 0;
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};
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} // namespace net
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#endif // NET_REPORTING_REPORTING_ENDPOINT_MANAGER_H_
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