mirror of
https://github.com/kidfromjupiter/nearby.git
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nohle
dee3e9cfb4
Consolidate BWU service ID bookkeeping into the BaseBwuHandler class. This eliminates duplicated code in per-medium BWU handlers and allows us to easily augment the bookkeeping with endpoint IDs in a subsequent CL. Also, localize all service ID wrapping to the BaseBwuHandler class. A postfix is appended to the service ID during bandwidth upgrade, e.g., "NearbyShare_INITIATOR_BWU"; this is done to distinguish a medium's use for advertising/discovery vs. its use for device-to-device connections. This CL should theoretically be a no-op, but per-medium BWU handlers were inconsistent in their implementations. PiperOrigin-RevId: 442019603
56 lines
1.9 KiB
C++
56 lines
1.9 KiB
C++
// Copyright 2022 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef CORE_INTERNAL_SERVICE_ID_CONSTANTS_H_
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#define CORE_INTERNAL_SERVICE_ID_CONSTANTS_H_
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#include <string>
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#include "absl/strings/match.h"
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#include "absl/strings/string_view.h"
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namespace location {
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namespace nearby {
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namespace connections {
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constexpr absl::string_view kUnknownServiceId = "UNKNOWN_SERVICE";
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// A suffix appended to service IDs when initiating a bandwidth upgrade to
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// distinguish the mediums from those used for advertising/discovery.
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constexpr absl::string_view kInitiatorUpgradeServiceIdPostfix = "_UPGRADE";
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// Returns true if |service_id| not empty and has the initiator's upgrade
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// postfix.
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inline bool IsInitiatorUpgradeServiceId(absl::string_view service_id) {
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return !service_id.empty() &&
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absl::EndsWith(service_id, kInitiatorUpgradeServiceIdPostfix);
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}
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// Appends the kInitiatorUpgradeServiceIdPostfix to |service_id| if necessary.
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inline std::string WrapInitiatorUpgradeServiceId(absl::string_view service_id) {
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// If |service_id| is empty or already has the upgrade postfix, do nothing.
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if (service_id.empty() || IsInitiatorUpgradeServiceId(service_id)) {
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return std::string(service_id);
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}
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return std::string(service_id) +
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std::string(kInitiatorUpgradeServiceIdPostfix);
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}
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} // namespace connections
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} // namespace nearby
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} // namespace location
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#endif // CORE_INTERNAL_SERVICE_ID_CONSTANTS_H_
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