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// Copyright 2015 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_DOMAIN_RELIABILITY_CONTEXT_MANAGER_H_
#define COMPONENTS_DOMAIN_RELIABILITY_CONTEXT_MANAGER_H_
#include <stddef.h>
#include <map>
#include <memory>
#include <string>
#include "base/macros.h"
#include "base/time/time.h"
#include "base/values.h"
#include "components/domain_reliability/beacon.h"
#include "components/domain_reliability/config.h"
#include "components/domain_reliability/context.h"
#include "components/domain_reliability/domain_reliability_export.h"
#include "url/gurl.h"
namespace domain_reliability {
// Owns DomainReliabilityContexts, receives Beacons and queues them in the
// appropriate Context.
// TODO(chlily): This class should be merged with the DomainReliabilityMonitor.
class DOMAIN_RELIABILITY_EXPORT DomainReliabilityContextManager {
public:
DomainReliabilityContextManager(
const MockableTime* time,
const std::string& upload_reporter_string,
DomainReliabilityContext::UploadAllowedCallback upload_allowed_callback,
DomainReliabilityDispatcher* dispatcher);
~DomainReliabilityContextManager();
// If |url| maps to a context added to this manager, calls |OnBeacon| on
// that context with |beacon|. Otherwise, does nothing.
// Prefers contexts that are an exact match for the beacon's url's hostname
// over a subdomain-inclusive context for the beacon's superdomain.
// If the beacon should be routed to a Google config that has not yet been
// created, this will create it first.
void RouteBeacon(std::unique_ptr<DomainReliabilityBeacon> beacon);
// Calls |ClearBeacons| on all contexts matched by |origin_filter| added
// to this manager, but leaves the contexts themselves intact. A null
// |origin_filter| is interpreted as an always-true filter, indicating
// complete deletion.
void ClearBeacons(
const base::RepeatingCallback<bool(const GURL&)>& origin_filter);
// Creates and stores a context for the given |config|, which should be for an
// origin distinct from any existing ones. Returns pointer to the inserted
// context.
DomainReliabilityContext* AddContextForConfig(
std::unique_ptr<const DomainReliabilityConfig> config);
// Removes all contexts matched by |origin_filter| from this manager
// (discarding all queued beacons in the process). A null |origin_filter|
// is interpreted as an always-true filter, indicating complete deletion.
void RemoveContexts(
const base::RepeatingCallback<bool(const GURL&)>& origin_filter);
// Finds a context for the exact domain |host|. Otherwise returns nullptr.
DomainReliabilityContext* GetContext(const std::string& host) const;
// Finds a context for the parent domain of |host|, which must include
// subdomains. Otherwise returns nullptr.
DomainReliabilityContext* GetSuperdomainContext(
const std::string& host) const;
void OnNetworkChanged(base::TimeTicks now);
// Called by the Monitor during initialization. Should be called exactly once.
// |uploader_| needs to be set before any contexts are created.
void SetUploader(DomainReliabilityUploader* uploader);
std::unique_ptr<base::Value> GetWebUIData() const;
size_t contexts_size_for_testing() const { return contexts_.size(); }
private:
// Maps the hostname to the DomainReliabilityContext for that origin.
using ContextMap =
std::map<std::string, std::unique_ptr<DomainReliabilityContext>>;
std::unique_ptr<DomainReliabilityContext> CreateContextForConfig(
std::unique_ptr<const DomainReliabilityConfig> config) const;
// |time_| is owned by the Monitor and a copy of this pointer is given to
// every Context.
const MockableTime* const time_;
const std::string upload_reporter_string_;
base::TimeTicks last_network_change_time_;
DomainReliabilityContext::UploadAllowedCallback upload_allowed_callback_;
// |dispatcher_| is owned by the Monitor and a copy of this pointer is given
// to every Context.
DomainReliabilityDispatcher* const dispatcher_;
// |uploader_| is owned by the Monitor. Expected to be non-null after
// initialization because it should be set by the Monitor, as long as the
// Monitor has been fully initialized. A copy of this pointer is given to
// every Context.
DomainReliabilityUploader* uploader_ = nullptr;
ContextMap contexts_;
DISALLOW_COPY_AND_ASSIGN(DomainReliabilityContextManager);
};
} // namespace domain_reliability
#endif // COMPONENTS_DOMAIN_RELIABILITY_CONTEXT_MANAGER_H_
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