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163_add_nonce_and_public_plan_to_builds.go
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163_add_nonce_and_public_plan_to_builds.go
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package migrations
import (
"encoding/json"
"fmt"
"github.com/concourse/atc/db/migration"
internal "github.com/concourse/atc/db/migrations/internal/163"
)
func AddNonceAndPublicPlanToBuilds(tx migration.LimitedTx) error {
_, err := tx.Exec(`
ALTER TABLE builds
ADD COLUMN nonce text;
`)
if err != nil {
return err
}
_, err = tx.Exec(`
ALTER TABLE builds
ADD COLUMN public_plan json DEFAULT '{}';
`)
if err != nil {
return err
}
offset := 0
for {
rows, err := tx.Query(fmt.Sprintf(`
SELECT id, engine_metadata
FROM builds
WHERE engine='exec.v2'
ORDER BY id ASC
LIMIT 500
OFFSET %d
`, offset))
if err != nil {
return err
}
defer rows.Close()
//create public plans
plans := map[int]internal.Plan{}
totalRows := 0
for rows.Next() {
totalRows++
var buildID int
var engineMetadataJSON []byte
err := rows.Scan(&buildID, &engineMetadataJSON)
if err != nil {
return err
}
if engineMetadataJSON == nil {
continue
}
var execEngineMetadata execV2Metadata
err = json.Unmarshal(engineMetadataJSON, &execEngineMetadata)
if err != nil {
return err
}
plans[buildID] = execEngineMetadata.Plan
}
if totalRows == 0 {
break
} else {
offset += totalRows
}
for buildID, plan := range plans {
_, err := tx.Exec(`
UPDATE builds
SET
public_plan = $1
WHERE
id = $2
`, plan.Public(), buildID)
if err != nil {
return err
}
}
}
_, err = tx.Exec(`
UPDATE builds
SET
engine_metadata = NULL
WHERE
engine = 'exec.v2' AND
status IN ('succeeded','aborted','failed','errored')
`)
return err
}
type execV2Metadata struct {
Plan internal.Plan
}