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queryhandler.go
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/
queryhandler.go
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// Copyright 2021 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 domain
import (
"context"
"time"
eventsourcingApi "github.com/finleap-connect/monoskope/pkg/api/eventsourcing"
"github.com/finleap-connect/monoskope/pkg/domain/constants/aggregates"
"github.com/finleap-connect/monoskope/pkg/domain/handler"
"github.com/finleap-connect/monoskope/pkg/domain/projectors"
"github.com/finleap-connect/monoskope/pkg/domain/repositories"
"github.com/finleap-connect/monoskope/pkg/eventsourcing"
"github.com/finleap-connect/monoskope/pkg/eventsourcing/eventhandler"
esr "github.com/finleap-connect/monoskope/pkg/eventsourcing/repositories"
)
type QueryHandlerDomain struct {
UserRoleBindingRepository repositories.UserRoleBindingRepository
UserRepository repositories.UserRepository
TenantRepository repositories.TenantRepository
TenantUserRepository repositories.ReadOnlyTenantUserRepository
ClusterRepository repositories.ClusterRepository
CertificateRepository repositories.CertificateRepository
TenantClusterBindingRepository repositories.TenantClusterBindingRepository
ClusterAccessRepo repositories.ReadOnlyClusterAccessRepository
}
func NewQueryHandlerDomain(ctx context.Context, eventBus eventsourcing.EventBusConsumer, esClient eventsourcingApi.EventStoreClient) (*QueryHandlerDomain, error) {
d := new(QueryHandlerDomain)
// Setup repositories
d.UserRoleBindingRepository = repositories.NewUserRoleBindingRepository(esr.NewInMemoryRepository())
d.UserRepository = repositories.NewUserRepository(esr.NewInMemoryRepository(), d.UserRoleBindingRepository)
d.TenantRepository = repositories.NewTenantRepository(esr.NewInMemoryRepository())
d.TenantUserRepository = repositories.NewTenantUserRepository(d.UserRepository, d.UserRoleBindingRepository)
d.ClusterRepository = repositories.NewClusterRepository(esr.NewInMemoryRepository())
d.CertificateRepository = repositories.NewCertificateRepository(esr.NewInMemoryRepository())
d.TenantClusterBindingRepository = repositories.NewTenantClusterBindingRepository(esr.NewInMemoryRepository())
d.ClusterAccessRepo = repositories.NewClusterAccessRepository(d.TenantClusterBindingRepository, d.ClusterRepository, d.UserRoleBindingRepository)
// Setup projectors
userProjector := projectors.NewUserProjector()
userRoleBindingProjector := projectors.NewUserRoleBindingProjector()
tenantProjector := projectors.NewTenantProjector()
clusterProjector := projectors.NewClusterProjector()
certificateProjector := projectors.NewCertificateProjector()
tenantClusterBindingProjector := projectors.NewTenantClusterBindingProjector()
// Setup handler
userProjectingHandler := eventhandler.NewProjectingEventHandler(userProjector, d.UserRepository)
tenantProjectingHandler := eventhandler.NewProjectingEventHandler(tenantProjector, d.TenantRepository)
userRoleBindingProjectingHandler := eventhandler.NewProjectingEventHandler(userRoleBindingProjector, d.UserRoleBindingRepository)
clusterProjectingHandler := eventhandler.NewProjectingEventHandler(clusterProjector, d.ClusterRepository)
certificateProjectingHandler := eventhandler.NewProjectingEventHandler(certificateProjector, d.CertificateRepository)
tenantClusterBindingProjectingHandler := eventhandler.NewProjectingEventHandler(tenantClusterBindingProjector, d.TenantClusterBindingRepository)
// Setup middleware
refreshDuration := time.Second * 30
userHandlerChain := eventsourcing.UseEventHandlerMiddleware(userProjectingHandler, eventhandler.NewEventStoreReplayMiddleware(esClient), eventhandler.NewEventStoreRefreshMiddleware(esClient, refreshDuration))
userRoleBindingHandlerChain := eventsourcing.UseEventHandlerMiddleware(userRoleBindingProjectingHandler, eventhandler.NewEventStoreReplayMiddleware(esClient), eventhandler.NewEventStoreRefreshMiddleware(esClient, refreshDuration))
tenantHandlerChain := eventsourcing.UseEventHandlerMiddleware(tenantProjectingHandler, eventhandler.NewEventStoreReplayMiddleware(esClient), eventhandler.NewEventStoreRefreshMiddleware(esClient, refreshDuration))
clusterHandlerChain := eventsourcing.UseEventHandlerMiddleware(clusterProjectingHandler, eventhandler.NewEventStoreReplayMiddleware(esClient), eventhandler.NewEventStoreRefreshMiddleware(esClient, refreshDuration))
certificateHandlerChain := eventsourcing.UseEventHandlerMiddleware(certificateProjectingHandler, eventhandler.NewEventStoreReplayMiddleware(esClient), eventhandler.NewEventStoreRefreshMiddleware(esClient, refreshDuration))
tenantClusterBindingHandlerChain := eventsourcing.UseEventHandlerMiddleware(tenantClusterBindingProjectingHandler, eventhandler.NewEventStoreReplayMiddleware(esClient), eventhandler.NewEventStoreRefreshMiddleware(esClient, refreshDuration))
// Setup matcher for event bus
userMatcher := eventBus.Matcher().MatchAggregateType(aggregates.User)
tenantMatcher := eventBus.Matcher().MatchAggregateType(aggregates.Tenant)
userRoleBindingMatcher := eventBus.Matcher().MatchAggregateType(aggregates.UserRoleBinding)
clusterMatcher := eventBus.Matcher().MatchAggregateType(aggregates.Cluster)
certificateMatcher := eventBus.Matcher().MatchAggregateType(aggregates.Certificate)
tenantClusterBindingMatcher := eventBus.Matcher().MatchAggregateType(aggregates.TenantClusterBinding)
// Register event handler with event bus
if err := eventBus.AddHandler(ctx, userHandlerChain, userMatcher); err != nil {
return nil, err
}
if err := eventBus.AddHandler(ctx, tenantHandlerChain, tenantMatcher); err != nil {
return nil, err
}
if err := eventBus.AddHandler(ctx, userRoleBindingHandlerChain, userRoleBindingMatcher); err != nil {
return nil, err
}
if err := eventBus.AddHandler(ctx, clusterHandlerChain, clusterMatcher); err != nil {
return nil, err
}
if err := eventBus.AddHandler(ctx, certificateHandlerChain, certificateMatcher); err != nil {
return nil, err
}
if err := eventBus.AddHandler(ctx, tenantClusterBindingHandlerChain, tenantClusterBindingMatcher); err != nil {
return nil, err
}
// Start repo warming
if err := handler.WarmUp(ctx, esClient, aggregates.User, userHandlerChain); err != nil {
return nil, err
}
if err := handler.WarmUp(ctx, esClient, aggregates.UserRoleBinding, userRoleBindingHandlerChain); err != nil {
return nil, err
}
if err := handler.WarmUp(ctx, esClient, aggregates.Tenant, tenantHandlerChain); err != nil {
return nil, err
}
if err := handler.WarmUp(ctx, esClient, aggregates.Cluster, clusterHandlerChain); err != nil {
return nil, err
}
if err := handler.WarmUp(ctx, esClient, aggregates.Certificate, certificateHandlerChain); err != nil {
return nil, err
}
if err := handler.WarmUp(ctx, esClient, aggregates.TenantClusterBinding, tenantClusterBindingHandlerChain); err != nil {
return nil, err
}
return d, nil
}