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cluster.go
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cluster.go
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// Copyright 2022 Monoskope Authors
//
// 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 events
import (
"context"
"strings"
"time"
"github.com/finleap-connect/monoskope/internal/gateway/auth"
"github.com/finleap-connect/monoskope/pkg/api/domain/eventdata"
esApi "github.com/finleap-connect/monoskope/pkg/api/eventsourcing"
"github.com/finleap-connect/monoskope/pkg/audit/errors"
"github.com/finleap-connect/monoskope/pkg/audit/formatters"
"github.com/finleap-connect/monoskope/pkg/audit/formatters/event"
"github.com/finleap-connect/monoskope/pkg/domain/constants/events"
fConsts "github.com/finleap-connect/monoskope/pkg/domain/constants/formatters"
"github.com/finleap-connect/monoskope/pkg/domain/projectors"
es "github.com/finleap-connect/monoskope/pkg/eventsourcing"
"google.golang.org/protobuf/types/known/timestamppb"
"google.golang.org/protobuf/types/known/wrapperspb"
)
func init() {
for _, eventType := range events.ClusterEvents {
_ = event.DefaultEventFormatterRegistry.RegisterEventFormatter(eventType, NewClusterEventFormatter)
}
}
// clusterEventFormatter EventFormatter implementation for the cluster-aggregate
type clusterEventFormatter struct {
*event.EventFormatterBase
esClient esApi.EventStoreClient
}
// NewClusterEventFormatter creates a new event formatter for the cluster-aggregate
func NewClusterEventFormatter(esClient esApi.EventStoreClient) event.EventFormatter {
return &clusterEventFormatter{
&event.EventFormatterBase{}, esClient,
}
}
// GetFormattedDetails formats the cluster-aggregate-events in a human-readable format
func (f *clusterEventFormatter) GetFormattedDetails(ctx context.Context, event *esApi.Event) (string, error) {
switch es.EventType(event.Type) {
case events.ClusterDeleted:
return f.getFormattedDetailsClusterDeleted(ctx, event)
}
ed, err := es.EventData(event.Data).Unmarshal()
if err != nil {
return "", err
}
switch ed := ed.(type) {
case *eventdata.ClusterCreated:
return f.getFormattedDetailsClusterCreated(event, ed)
case *eventdata.ClusterCreatedV2:
return f.getFormattedDetailsClusterCreatedV2(event, ed)
case *eventdata.ClusterUpdated:
return f.getFormattedDetailsClusterUpdated(ctx, event, ed)
}
return "", errors.ErrMissingFormatterImplementationForEventType
}
func (f *clusterEventFormatter) getFormattedDetailsClusterCreated(event *esApi.Event, eventData *eventdata.ClusterCreated) (string, error) {
return fConsts.ClusterCreatedV2DetailsFormat.Sprint(event.Metadata[auth.HeaderAuthEmail], eventData.Name), nil
}
func (f *clusterEventFormatter) getFormattedDetailsClusterCreatedV2(event *esApi.Event, eventData *eventdata.ClusterCreatedV2) (string, error) {
return fConsts.ClusterCreatedDetailsFormat.Sprint(event.Metadata[auth.HeaderAuthEmail], eventData.Name), nil
}
func (f *clusterEventFormatter) getFormattedDetailsClusterUpdated(ctx context.Context, event *esApi.Event, eventData *eventdata.ClusterUpdated) (string, error) {
snapshotter := formatters.NewSnapshotter(f.esClient, projectors.NewClusterProjector())
cluster, err := snapshotter.CreateSnapshot(ctx, &esApi.EventFilter{
MaxTimestamp: timestamppb.New(event.GetTimestamp().AsTime().Add(time.Duration(-1) * time.Microsecond)), // exclude the update event
AggregateId: &wrapperspb.StringValue{Value: event.AggregateId}},
)
if err != nil {
return "", err
}
var details strings.Builder
details.WriteString(fConsts.ClusterUpdatedDetailsFormat.Sprint(event.Metadata[auth.HeaderAuthEmail]))
f.AppendUpdate("Display name", eventData.DisplayName, cluster.DisplayName, &details)
f.AppendUpdate("API server address", eventData.ApiServerAddress, cluster.ApiServerAddress, &details)
if len(eventData.CaCertificateBundle) != 0 {
f.AppendUpdate("Certificate", "a new one", "", &details)
}
return details.String(), nil
}
func (f *clusterEventFormatter) getFormattedDetailsClusterDeleted(ctx context.Context, event *esApi.Event) (string, error) {
snapshotter := formatters.NewSnapshotter(f.esClient, projectors.NewClusterProjector())
cluster, err := snapshotter.CreateSnapshot(ctx, &esApi.EventFilter{
MaxTimestamp: event.GetTimestamp(),
AggregateId: &wrapperspb.StringValue{Value: event.AggregateId}},
)
if err != nil {
return "", err
}
return fConsts.ClusterDeletedDetailsFormat.Sprint(event.Metadata[auth.HeaderAuthEmail], cluster.DisplayName), nil
}