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models.go
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models.go
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package models
import (
"context"
"errors"
"fmt"
"strings"
runtimev1 "github.com/rilldata/rill/proto/gen/rill/runtime/v1"
"github.com/rilldata/rill/runtime/drivers"
"github.com/rilldata/rill/runtime/services/catalog/migrator"
"github.com/rilldata/rill/runtime/services/catalog/migrator/sources"
)
func init() {
migrator.Register(drivers.ObjectTypeModel, &modelMigrator{})
}
type modelMigrator struct{}
func (m *modelMigrator) Create(ctx context.Context, olap drivers.OLAPStore, repo drivers.RepoStore, opts migrator.Options, catalogObj *drivers.CatalogEntry) error {
sql := catalogObj.GetModel().Sql
materialize := catalogObj.GetModel().Materialize
materializeType := getMaterializeType(materialize)
return olap.Exec(ctx, &drivers.Statement{
Query: fmt.Sprintf(
"CREATE OR REPLACE %s %q AS (%s)",
materializeType,
catalogObj.Name,
sql,
),
Priority: 100,
})
}
func (m *modelMigrator) Update(ctx context.Context, olap drivers.OLAPStore, repo drivers.RepoStore, opts migrator.Options, oldCatalogObj, newCatalogObj *drivers.CatalogEntry) error {
if oldCatalogObj.Name != newCatalogObj.Name {
// should not happen but just to be sure
return errors.New("update is called but model name has changed")
}
oldModel := oldCatalogObj.GetModel()
newModel := newCatalogObj.GetModel()
oldMaterializeType := getMaterializeType(oldModel.Materialize)
newMaterializeType := getMaterializeType(newModel.Materialize)
// check if sql and materialize type are same and if so, do nothing
// this includes the cases where materialize is changed from true to inferred or false to unspecified and vice versa
if oldModel.Sql == newModel.Sql && oldMaterializeType == newMaterializeType {
return nil
}
// if sql is changed and materialize type is the same then just update the sql
if oldModel.Sql != newModel.Sql && oldMaterializeType == newMaterializeType {
return m.Create(ctx, olap, repo, opts, newCatalogObj)
}
// else drop the old type and create new materialized type using new sql
err := m.Delete(ctx, olap, oldCatalogObj)
if err != nil {
return err
}
return m.Create(ctx, olap, repo, opts, newCatalogObj)
}
func getMaterializeType(materialize bool) string {
if materialize {
return "TABLE"
}
return "VIEW"
}
func (m *modelMigrator) Rename(ctx context.Context, olap drivers.OLAPStore, from string, catalogObj *drivers.CatalogEntry) error {
materializeType := getMaterializeType(catalogObj.GetModel().Materialize)
if strings.EqualFold(from, catalogObj.Name) {
tempName := fmt.Sprintf("__rill_temp_%s", from)
err := olap.Exec(ctx, &drivers.Statement{
Query: fmt.Sprintf("ALTER %s %q RENAME TO %q", materializeType, from, tempName),
Priority: 100,
})
if err != nil {
return err
}
from = tempName
}
return olap.Exec(ctx, &drivers.Statement{
Query: fmt.Sprintf("ALTER %s %q RENAME TO %q", materializeType, from, catalogObj.Name),
Priority: 100,
})
}
func (m *modelMigrator) Delete(ctx context.Context, olap drivers.OLAPStore, catalogObj *drivers.CatalogEntry) error {
materializeType := getMaterializeType(catalogObj.GetModel().Materialize)
return olap.Exec(ctx, &drivers.Statement{
Query: fmt.Sprintf("DROP %s IF EXISTS %q", materializeType, catalogObj.Name),
Priority: 100,
})
}
func (m *modelMigrator) GetDependencies(ctx context.Context, olap drivers.OLAPStore, catalog *drivers.CatalogEntry) ([]string, []*drivers.CatalogEntry) {
model := catalog.GetModel()
dependencies := ExtractTableNames(model.Sql)
embeddedSourcesMap := make(map[string]*drivers.CatalogEntry)
for i, dependency := range dependencies {
source, ok := sources.ParseEmbeddedSource(dependency)
if !ok {
continue
}
if _, ok := embeddedSourcesMap[source.Name]; ok {
continue
}
embeddedSourcesMap[source.Name] = &drivers.CatalogEntry{
Name: source.Name,
Type: drivers.ObjectTypeSource,
Object: source,
Path: source.Properties.AsMap()["path"].(string),
Embedded: true,
}
// replace the dependency
dependencies[i] = source.Name
model.Sql = strings.ReplaceAll(model.Sql, dependency, source.Name)
}
embeddedSources := make([]*drivers.CatalogEntry, 0)
for _, embeddedSource := range embeddedSourcesMap {
embeddedSources = append(embeddedSources, embeddedSource)
}
return dependencies, embeddedSources
}
func (m *modelMigrator) Validate(ctx context.Context, olap drivers.OLAPStore, catalog *drivers.CatalogEntry) []*runtimev1.ReconcileError {
model := catalog.GetModel()
err := olap.Exec(ctx, &drivers.Statement{
Query: model.Sql,
Priority: 100,
DryRun: true,
})
if err != nil {
return migrator.CreateValidationError(catalog.Path, err.Error())
}
return nil
}
func (m *modelMigrator) IsEqual(ctx context.Context, cat1, cat2 *drivers.CatalogEntry) bool {
return cat1.GetModel().Dialect == cat2.GetModel().Dialect && strings.EqualFold(cat1.GetModel().Sql, cat2.GetModel().Sql) && cat1.GetModel().Materialize == cat2.GetModel().Materialize
}
func (m *modelMigrator) ExistsInOlap(ctx context.Context, olap drivers.OLAPStore, catalog *drivers.CatalogEntry) (bool, error) {
_, err := olap.InformationSchema().Lookup(ctx, catalog.Name)
if errors.Is(err, drivers.ErrNotFound) {
return false, nil
} else if err != nil {
return false, err
}
return true, nil
}