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matrix.go
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matrix.go
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package scheduler
import (
"fmt"
"github.com/google/uuid"
"github.com/jackc/pgtype"
"github.com/nanzhong/tstr/db"
)
func RunsForTest(test db.Test) ([]db.ScheduleRunParams, error) {
var labels map[string]string
if err := test.Labels.AssignTo(&labels); err != nil {
return nil, fmt.Errorf("parsing labels: %w", err)
}
var matrix db.TestMatrix
if err := test.Matrix.AssignTo(&matrix); err != nil {
return nil, fmt.Errorf("parsing matrix: %w", err)
}
matrixID := uuid.NullUUID{}
labelSet := generateMatrixLabelSet(labels, matrix.Labels)
if len(matrix.Labels) > 0 {
matrixID.Valid = true
matrixID.UUID = uuid.New()
}
var runParams []db.ScheduleRunParams
for _, labels := range labelSet {
var dbLabels pgtype.JSONB
if err := dbLabels.Set(labels); err != nil {
return nil, fmt.Errorf("formatting labels: %w", err)
}
runParams = append(runParams, db.ScheduleRunParams{
Labels: dbLabels,
TestMatrixID: matrixID,
TestID: test.ID,
Namespace: test.Namespace,
})
}
return runParams, nil
}
func generateMatrixLabelSet(b map[string]string, ml map[string][]string) []map[string]string {
var labelSets []map[string]string
if len(ml) == 0 {
labelSets = append(labelSets, copyLabels(b))
} else {
var (
kIdx = make(map[string]int)
keys []string
)
for k := range ml {
kIdx[k] = 0
keys = append(keys, k)
}
for {
labels := copyLabels(b)
if labels == nil {
labels = make(map[string]string)
}
for _, rk := range keys {
labels[rk] = ml[rk][kIdx[rk]]
}
labelSets = append(labelSets, labels)
next := -1
for i, k := range keys {
if kIdx[k]+1 < len(ml[k]) {
next = i
break
}
}
if next == -1 {
break
}
kIdx[keys[next]] += 1
for i := 0; i < next; i++ {
kIdx[keys[i]] = 0
}
}
}
return labelSets
}
func copyLabels(l map[string]string) map[string]string {
if l == nil {
return nil
}
c := make(map[string]string)
for k, v := range l {
c[k] = v
}
return c
}