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register-ehrid-aftermath.go
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register-ehrid-aftermath.go
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package registerehrid
import (
"context"
"firebase.google.com/go/db"
"fmt"
"github.com/covid19cz/erouska-backend/internal/constants"
"github.com/covid19cz/erouska-backend/internal/firebase/structs"
"github.com/covid19cz/erouska-backend/internal/logging"
"github.com/covid19cz/erouska-backend/internal/pubsub"
"github.com/covid19cz/erouska-backend/internal/realtimedb"
"github.com/covid19cz/erouska-backend/internal/utils"
)
// AfterMath handler
func AfterMath(ctx context.Context, m pubsub.Message) error {
logger := logging.FromContext(ctx)
var payload AftermathPayload
decodeErr := pubsub.DecodeJSONEvent(m, &payload)
if decodeErr != nil {
return fmt.Errorf("Error while parsing event payload: %v", decodeErr)
}
logger.Debugf("Doing user registration aftermath for eHrid '%s'!", payload.Ehrid)
client := realtimedb.Client{}
var date = utils.GetTimeNow().Format("20060102")
// update daily counter
err := updateCounter(ctx, client, constants.DbUserCountersPrefix+date)
if err != nil {
logger.Warnf("Cannot handle register user aftermath due to unknown error: %+v", err.Error())
return err
}
// update total counter
err = updateCounter(ctx, client, constants.DbUserCountersPrefix+"total")
if err != nil {
logger.Warnf("Cannot handle register user aftermath due to unknown error: %+v", err.Error())
return err
}
logger.Debugf("Register user aftermath done")
// Everything done!
return nil
}
func updateCounter(ctx context.Context, client realtimedb.Client, key string) error {
logger := logging.FromContext(ctx)
return client.RunTransaction(ctx, key, func(tn db.TransactionNode) (interface{}, error) {
var state structs.UserCounter
if err := tn.Unmarshal(&state); err != nil {
return nil, err
}
logger.Debugf("Found counter state, key %v: %+v", key, state)
state.UsersCount++
logger.Debugf("Saving updated counter state, key %v: %+v", key, state)
return state, nil
})
}