mirror of
https://github.com/octoleo/restic.git
synced 2024-12-02 01:48:30 +00:00
106 lines
2.9 KiB
Go
106 lines
2.9 KiB
Go
// Copyright 2016 Google Inc. All Rights Reserved.
|
|
//
|
|
// 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 bigquery
|
|
|
|
import (
|
|
"golang.org/x/net/context"
|
|
bq "google.golang.org/api/bigquery/v2"
|
|
)
|
|
|
|
// ExtractConfig holds the configuration for an extract job.
|
|
type ExtractConfig struct {
|
|
// Src is the table from which data will be extracted.
|
|
Src *Table
|
|
|
|
// Dst is the destination into which the data will be extracted.
|
|
Dst *GCSReference
|
|
|
|
// DisableHeader disables the printing of a header row in exported data.
|
|
DisableHeader bool
|
|
|
|
// The labels associated with this job.
|
|
Labels map[string]string
|
|
}
|
|
|
|
func (e *ExtractConfig) toBQ() *bq.JobConfiguration {
|
|
var printHeader *bool
|
|
if e.DisableHeader {
|
|
f := false
|
|
printHeader = &f
|
|
}
|
|
return &bq.JobConfiguration{
|
|
Labels: e.Labels,
|
|
Extract: &bq.JobConfigurationExtract{
|
|
DestinationUris: append([]string{}, e.Dst.URIs...),
|
|
Compression: string(e.Dst.Compression),
|
|
DestinationFormat: string(e.Dst.DestinationFormat),
|
|
FieldDelimiter: e.Dst.FieldDelimiter,
|
|
SourceTable: e.Src.toBQ(),
|
|
PrintHeader: printHeader,
|
|
},
|
|
}
|
|
}
|
|
|
|
func bqToExtractConfig(q *bq.JobConfiguration, c *Client) *ExtractConfig {
|
|
qe := q.Extract
|
|
return &ExtractConfig{
|
|
Labels: q.Labels,
|
|
Dst: &GCSReference{
|
|
URIs: qe.DestinationUris,
|
|
Compression: Compression(qe.Compression),
|
|
DestinationFormat: DataFormat(qe.DestinationFormat),
|
|
FileConfig: FileConfig{
|
|
CSVOptions: CSVOptions{
|
|
FieldDelimiter: qe.FieldDelimiter,
|
|
},
|
|
},
|
|
},
|
|
DisableHeader: qe.PrintHeader != nil && !*qe.PrintHeader,
|
|
Src: bqToTable(qe.SourceTable, c),
|
|
}
|
|
}
|
|
|
|
// An Extractor extracts data from a BigQuery table into Google Cloud Storage.
|
|
type Extractor struct {
|
|
JobIDConfig
|
|
ExtractConfig
|
|
c *Client
|
|
}
|
|
|
|
// ExtractorTo returns an Extractor which can be used to extract data from a
|
|
// BigQuery table into Google Cloud Storage.
|
|
// The returned Extractor may optionally be further configured before its Run method is called.
|
|
func (t *Table) ExtractorTo(dst *GCSReference) *Extractor {
|
|
return &Extractor{
|
|
c: t.c,
|
|
ExtractConfig: ExtractConfig{
|
|
Src: t,
|
|
Dst: dst,
|
|
},
|
|
}
|
|
}
|
|
|
|
// Run initiates an extract job.
|
|
func (e *Extractor) Run(ctx context.Context) (*Job, error) {
|
|
return e.c.insertJob(ctx, e.newJob(), nil)
|
|
}
|
|
|
|
func (e *Extractor) newJob() *bq.Job {
|
|
return &bq.Job{
|
|
JobReference: e.JobIDConfig.createJobRef(e.c),
|
|
Configuration: e.ExtractConfig.toBQ(),
|
|
}
|
|
}
|