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grpc.go
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grpc.go
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// Copyright © 2019 The Things Network Foundation, The Things Industries B.V.
//
// 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.
package gatewayserver
import (
"context"
"go.thethings.network/lorawan-stack/v3/pkg/errors"
"go.thethings.network/lorawan-stack/v3/pkg/ttnpb"
"go.thethings.network/lorawan-stack/v3/pkg/unique"
)
// GetGatewayConnectionStats returns statistics about a gateway connection.
func (gs *GatewayServer) GetGatewayConnectionStats(ctx context.Context, ids *ttnpb.GatewayIdentifiers) (*ttnpb.GatewayConnectionStats, error) {
if err := gs.entityRegistry.AssertGatewayRights(ctx, ids, ttnpb.Right_RIGHT_GATEWAY_STATUS_READ); err != nil {
return nil, err
}
uid := unique.ID(ctx, ids)
if gs.statsRegistry != nil {
stats, err := gs.statsRegistry.Get(ctx, ids)
if err != nil || stats == nil {
if errors.IsNotFound(err) {
return nil, errNotConnected.WithAttributes("gateway_uid", uid).WithCause(err)
}
return nil, err
}
return stats, nil
}
val, ok := gs.connections.Load(uid)
if !ok {
return nil, errNotConnected.WithAttributes("gateway_uid", uid)
}
stats, _ := val.(connectionEntry).Stats()
return stats, nil
}
func applyGatewayConnectionStatsFieldMask(
dst, src *ttnpb.GatewayConnectionStats,
paths ...string,
) (*ttnpb.GatewayConnectionStats, error) {
if dst == nil {
dst = &ttnpb.GatewayConnectionStats{}
}
return dst, dst.SetFields(src, paths...)
}
// BatchGetGatewayConnectionStats implements Gs.
func (gs *GatewayServer) BatchGetGatewayConnectionStats(
ctx context.Context,
req *ttnpb.BatchGetGatewayConnectionStatsRequest,
) (*ttnpb.BatchGetGatewayConnectionStatsResponse, error) {
if err := gs.entityRegistry.AssertGatewayBatchRights(
ctx,
req.GatewayIds,
ttnpb.Right_RIGHT_GATEWAY_STATUS_READ,
); err != nil {
return nil, err
}
if gs.statsRegistry != nil {
entries, err := gs.statsRegistry.BatchGet(ctx, req.GatewayIds, req.FieldMask.GetPaths()...)
if err != nil {
return nil, err
}
return &ttnpb.BatchGetGatewayConnectionStatsResponse{
Entries: entries,
}, nil
}
// If there isn't a registry, load the (ephemeral) values stored in the Gateway Server connections.
entries := make(map[string]*ttnpb.GatewayConnectionStats, len(req.GatewayIds))
for _, id := range req.GatewayIds {
uid := unique.ID(ctx, id)
val, ok := gs.connections.Load(uid)
if !ok {
continue
}
st, _ := val.(connectionEntry).Stats()
if len(req.FieldMask.GetPaths()) > 0 {
selected, err := applyGatewayConnectionStatsFieldMask(nil, st, req.FieldMask.GetPaths()...)
if err != nil {
return nil, err
}
st = selected
}
entries[id.GatewayId] = st
}
return &ttnpb.BatchGetGatewayConnectionStatsResponse{
Entries: entries,
}, nil
}