/
write.go
65 lines (55 loc) · 1.67 KB
/
write.go
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package layers
import (
"context"
"github.com/jackc/pgx/v4/pgxpool"
"github.com/mimiro-io/postgresql-datalayer/internal/conf"
"github.com/mimiro-io/postgresql-datalayer/internal/db"
"go.uber.org/zap"
)
type PostLayer struct {
logger *zap.SugaredLogger
cmgr *conf.ConfigurationManager
PostRepo *PostRepository //exported because it needs to deferred from main??
}
type PostRepository struct {
DB *pgxpool.Pool
ctx context.Context
postTableDef *conf.PostMapping
digest [16]byte
}
func NewPostLayer(cmgr *conf.ConfigurationManager, logger *zap.SugaredLogger) *PostLayer {
layer := &PostLayer{
cmgr: cmgr,
logger: logger.Named("layer"),
}
return layer
}
func (postLayer *PostLayer) Dataset(request db.DatasetRequest) (WriteableDataset, error) {
pg, err := postLayer.connect(postLayer.cmgr.Datalayer, db.DatasetName(request.DatasetName))
if err != nil {
return nil, err
}
table, err := db.NewWriteTable(postLayer.cmgr.Datalayer, db.DatasetName(request.DatasetName))
if err != nil {
return nil, err
}
return NewPostgresDataset(pg, nil, table, request), nil
}
func (postLayer *PostLayer) connect(layer *conf.Datalayer, name db.DatasetName) (*pgxpool.Pool, error) {
var tableMap *conf.PostMapping
for _, table := range layer.PostMappings {
if table.DatasetName == string(name) {
tableMap = table
break
} else if table.TableName == string(name) { // fallback
tableMap = table
}
}
u := postLayer.cmgr.Datalayer.GetUrl(tableMap, nil)
conn, err := pgxpool.Connect(context.Background(), u.String())
if err != nil {
postLayer.logger.Warn("Error creating connection pool: ", err.Error())
return nil, err
}
return conn, nil
}