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| // Copyright 2024 Google LLC | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| #include "dvaas/port_id_map.h" | ||
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||
| #include "absl/container/flat_hash_map.h" | ||
| #include "absl/container/flat_hash_set.h" | ||
| #include "absl/status/status.h" | ||
| #include "absl/status/statusor.h" | ||
| #include "absl/strings/substitute.h" | ||
| #include "gutil/status.h" | ||
| #include "lib/p4rt/p4rt_port.h" | ||
|
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| namespace dvaas { | ||
|
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| using pins_test::P4rtPortId; | ||
|
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| absl::StatusOr<MirrorTestbedP4rtPortIdMap> | ||
| MirrorTestbedP4rtPortIdMap::CreateFromSutToControlSwitchPortMap( | ||
| absl::flat_hash_map<P4rtPortId, pins_test::P4rtPortId> | ||
| sut_to_control_port_map) { | ||
| absl::flat_hash_map<pins_test::P4rtPortId, pins_test::P4rtPortId> | ||
| control_to_sut_port_map; | ||
| for (const auto& [sut_port, control_port] : sut_to_control_port_map) { | ||
| if (control_to_sut_port_map.contains(control_port)) { | ||
| return gutil::InvalidArgumentErrorBuilder() << absl::Substitute( | ||
| "Both SUT P4RT port IDs '$0' and '$1' are mapped to control " | ||
| "switch P4RT port ID '$2'", | ||
| sut_port, control_to_sut_port_map[control_port], control_port); | ||
| } | ||
| control_to_sut_port_map[control_port] = sut_port; | ||
| } | ||
|
|
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| return MirrorTestbedP4rtPortIdMap(control_to_sut_port_map); | ||
| } | ||
|
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| absl::StatusOr<MirrorTestbedP4rtPortIdMap> | ||
| MirrorTestbedP4rtPortIdMap::CreateFromControlSwitchToSutPortMap( | ||
| absl::flat_hash_map<pins_test::P4rtPortId, pins_test::P4rtPortId> | ||
| control_to_sut_port_map) { | ||
| absl::flat_hash_map<pins_test::P4rtPortId, pins_test::P4rtPortId> | ||
| sut_to_control_port_map; | ||
| for (const auto& [control_port, sut_port] : control_to_sut_port_map) { | ||
| if (sut_to_control_port_map.contains(sut_port)) { | ||
| return gutil::InvalidArgumentErrorBuilder() << absl::Substitute( | ||
| "Both control switch P4RT port IDs '$0' and '$1' are mapped " | ||
| "to SUT P4RT port ID '$2'", | ||
| control_port, sut_to_control_port_map[sut_port], sut_port); | ||
| } | ||
| sut_to_control_port_map[sut_port] = control_port; | ||
| } | ||
|
|
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| return MirrorTestbedP4rtPortIdMap(control_to_sut_port_map); | ||
| } | ||
|
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| absl::StatusOr<pins_test::P4rtPortId> | ||
| MirrorTestbedP4rtPortIdMap::GetSutPortConnectedToControlSwitchPort( | ||
| const pins_test::P4rtPortId& control_port) const { | ||
| // Handle implicit identity map. | ||
| if (!control_to_sut_port_map_.has_value()) return control_port; | ||
|
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| // Handle explicit map. | ||
| const auto it = control_to_sut_port_map_->find(control_port); | ||
| if (it == control_to_sut_port_map_->end()) { | ||
| return absl::NotFoundError( | ||
| absl::Substitute("Control port '$0' was not found in control switch " | ||
| "to SUT P4RT port ID map.", | ||
| control_port)); | ||
| } else { | ||
| return it->second; | ||
| } | ||
| } | ||
|
|
||
| } // namespace dvaas |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,83 @@ | ||
| // Copyright 2024 Google LLC | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| #ifndef PINS_DVAAS_PORT_ID_MAP_H_ | ||
| #define PINS_DVAAS_PORT_ID_MAP_H_ | ||
|
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| #include <optional> | ||
| #include <utility> | ||
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| #include "absl/container/flat_hash_map.h" | ||
| #include "absl/status/status.h" | ||
| #include "absl/status/statusor.h" | ||
| #include "lib/p4rt/p4rt_port.h" | ||
| #include "proto/gnmi/gnmi.grpc.pb.h" | ||
|
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| namespace dvaas { | ||
|
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| // Keeps a map between the P4RT port IDs of connected interfaces between the | ||
| // control switch and the SUT in a mirror testbed. | ||
| class MirrorTestbedP4rtPortIdMap { | ||
| public: | ||
| // Creates a port mapping from SUT -> control switch port map. | ||
| static absl::StatusOr<MirrorTestbedP4rtPortIdMap> | ||
| CreateFromSutToControlSwitchPortMap( | ||
| absl::flat_hash_map<pins_test::P4rtPortId, pins_test::P4rtPortId> | ||
| sut_to_control_port_map); | ||
|
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| // Creates a port mapping from control switch -> SUT port map. | ||
| static absl::StatusOr<MirrorTestbedP4rtPortIdMap> | ||
| CreateFromControlSwitchToSutPortMap( | ||
| absl::flat_hash_map<pins_test::P4rtPortId, pins_test::P4rtPortId> | ||
| control_to_sut_port_map); | ||
|
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| // Creates an implicit map in which any port ID is mapped to itself. | ||
| static MirrorTestbedP4rtPortIdMap CreateIdentityMap() { | ||
| return MirrorTestbedP4rtPortIdMap(); | ||
| } | ||
|
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| // Creates a map in which the P4RT port IDs of interfaces of SUT and control | ||
| // switch with the same OpenConfig interface name are mapped to each other. | ||
| static absl::StatusOr<MirrorTestbedP4rtPortIdMap> | ||
| CreateFromMatchingInterfaceNames(gnmi::gNMI::StubInterface& sut, | ||
| gnmi::gNMI::StubInterface& control_switch) { | ||
| // TODO: Implement inferring port ID mapping from mirror | ||
| // testbed interface names. | ||
| return absl::UnimplementedError( | ||
| "Inferring port ID mapping from mirror testbed interface names is not " | ||
| "supported yet."); | ||
| } | ||
|
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| // Returns the P4RT port ID of the SUT interface connected to the interface on | ||
| // the control switch with the given P4RT port ID according to the port | ||
| // mapping. | ||
| absl::StatusOr<pins_test::P4rtPortId> GetSutPortConnectedToControlSwitchPort( | ||
| const pins_test::P4rtPortId& control_port) const; | ||
|
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| private: | ||
| MirrorTestbedP4rtPortIdMap( | ||
| absl::flat_hash_map<pins_test::P4rtPortId, pins_test::P4rtPortId> | ||
| control_to_sut_port_map) | ||
| : control_to_sut_port_map_(std::move(control_to_sut_port_map)) {} | ||
| MirrorTestbedP4rtPortIdMap() = default; | ||
|
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| // If nullopt, an implicit identity map is assumed. | ||
| std::optional< | ||
| absl::flat_hash_map<pins_test::P4rtPortId, pins_test::P4rtPortId>> | ||
| control_to_sut_port_map_; | ||
| }; | ||
|
|
||
| } // namespace dvaas | ||
|
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| #endif // PINS_DVAAS_PORT_ID_MAP_H_ |
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