ipld-eth-server/pkg/plugin/generator.go
2019-02-24 21:38:47 -06:00

70 lines
2.0 KiB
Go

// VulcanizeDB
// Copyright © 2018 Vulcanize
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package plugin
import (
"errors"
"fmt"
"os"
"github.com/vulcanize/vulcanizedb/pkg/config"
"github.com/vulcanize/vulcanizedb/pkg/plugin/builder"
"github.com/vulcanize/vulcanizedb/pkg/plugin/manager"
"github.com/vulcanize/vulcanizedb/pkg/plugin/writer"
)
type Generator interface {
GenerateExporterPlugin() error
}
type generator struct {
writer.PluginWriter
builder.PluginBuilder
manager.MigrationManager
}
func NewGenerator(gc config.Plugin, dbc config.Database) (*generator, error) {
if len(gc.Initializers) < 1 {
return nil, errors.New("generator needs to be configured with TransformerInitializer import paths")
}
if len(gc.Dependencies) < 1 {
return nil, errors.New("generator needs to be configured with root repository path(s)")
}
if len(gc.Migrations) < 1 {
fmt.Fprintf(os.Stderr, "warning: no db migration paths have been provided for the plugin transformers\r\n")
}
return &generator{
PluginWriter: writer.NewPluginWriter(gc),
PluginBuilder: builder.NewPluginBuilder(gc, dbc),
MigrationManager: manager.NewMigrationManager(gc, dbc),
}, nil
}
func (g *generator) GenerateExporterPlugin() error {
err := g.PluginWriter.WritePlugin()
if err != nil {
return err
}
defer g.PluginBuilder.CleanUp()
err = g.PluginBuilder.BuildPlugin()
if err != nil {
return err
}
return g.MigrationManager.RunMigrations()
}