/
common.go
49 lines (44 loc) · 1.26 KB
/
common.go
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package common
import (
"context"
"net/http"
"time"
"cloud.google.com/go/bigquery"
"google.golang.org/api/googleapi"
)
// Used by subcommands, now provides a single common timestap for a command invocation.
var Now = time.Now()
// Get a BigQuery dataset by name and create it if it doesn't exist.
func GetOrCreateDataset(ctx context.Context, client *bigquery.Client, name string) (*bigquery.Dataset, error) {
dataset := client.Dataset(name)
if err := dataset.Create(ctx, nil); err != nil {
switch v := err.(type) {
case *googleapi.Error:
if v.Code != http.StatusConflict { // already exists
return nil, err
}
default:
return nil, err
}
}
return dataset, nil
}
// Get a BigQuery table by name and create it if it doesn't exist.
func GetOrCreateTable(ctx context.Context, dataset *bigquery.Dataset, name string, prototype interface{}) (*bigquery.Table, error) {
table := dataset.Table(name)
schema, err := bigquery.InferSchema(prototype)
if err != nil {
return nil, err
}
if err := table.Create(ctx, &bigquery.TableMetadata{Schema: schema}); err != nil {
switch v := err.(type) {
case *googleapi.Error:
if v.Code != http.StatusConflict { // already exists
return nil, err
}
default:
return nil, err
}
}
return table, nil
}