cc-backend/graph/stats.go

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package graph
import (
"context"
"database/sql"
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"errors"
"fmt"
"math"
"github.com/99designs/gqlgen/graphql"
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"github.com/ClusterCockpit/cc-backend/config"
"github.com/ClusterCockpit/cc-backend/graph/model"
"github.com/ClusterCockpit/cc-backend/metricdata"
"github.com/ClusterCockpit/cc-backend/schema"
sq "github.com/Masterminds/squirrel"
)
// GraphQL validation should make sure that no unkown values can be specified.
var groupBy2column = map[model.Aggregate]string{
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model.AggregateUser: "job.user",
model.AggregateProject: "job.project",
model.AggregateCluster: "job.cluster",
}
// Helper function for the jobsStatistics GraphQL query placed here so that schema.resolvers.go is not too full.
func (r *queryResolver) jobsStatistics(ctx context.Context, filter []*model.JobFilter, groupBy *model.Aggregate) ([]*model.JobsStatistics, error) {
// In case `groupBy` is nil (not used), the model.JobsStatistics used is at the key '' (empty string)
stats := map[string]*model.JobsStatistics{}
// `socketsPerNode` and `coresPerSocket` can differ from cluster to cluster, so we need to explicitly loop over those.
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for _, cluster := range config.Clusters {
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for _, partition := range cluster.Partitions {
corehoursCol := fmt.Sprintf("ROUND(SUM(job.duration * job.num_nodes * %d * %d) / 3600)", partition.SocketsPerNode, partition.CoresPerSocket)
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var query sq.SelectBuilder
if groupBy == nil {
query = sq.Select(
"''",
"COUNT(job.id)",
"ROUND(SUM(job.duration) / 3600)",
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corehoursCol,
).From("job")
} else {
col := groupBy2column[*groupBy]
query = sq.Select(
col,
"COUNT(job.id)",
"ROUND(SUM(job.duration) / 3600)",
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corehoursCol,
).From("job").GroupBy(col)
}
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query = query.
Where("job.cluster = ?", cluster.Name).
Where("job.partition = ?", partition.Name)
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query = securityCheck(ctx, query)
for _, f := range filter {
query = buildWhereClause(f, query)
}
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rows, err := query.RunWith(r.DB).Query()
if err != nil {
return nil, err
}
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for rows.Next() {
var id sql.NullString
var jobs, walltime, corehours sql.NullInt64
if err := rows.Scan(&id, &jobs, &walltime, &corehours); err != nil {
return nil, err
}
if id.Valid {
if s, ok := stats[id.String]; ok {
s.TotalJobs += int(jobs.Int64)
s.TotalWalltime += int(walltime.Int64)
s.TotalCoreHours += int(corehours.Int64)
} else {
stats[id.String] = &model.JobsStatistics{
ID: id.String,
TotalJobs: int(jobs.Int64),
TotalWalltime: int(walltime.Int64),
TotalCoreHours: int(corehours.Int64),
}
}
}
}
}
}
if groupBy == nil {
query := sq.Select("COUNT(job.id)").From("job").Where("job.duration < 120")
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query = securityCheck(ctx, query)
for _, f := range filter {
query = buildWhereClause(f, query)
}
if err := query.RunWith(r.DB).QueryRow().Scan(&(stats[""].ShortJobs)); err != nil {
return nil, err
}
} else {
col := groupBy2column[*groupBy]
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query := sq.Select(col, "COUNT(job.id)").From("job").Where("job.duration < 120")
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query = securityCheck(ctx, query)
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for _, f := range filter {
query = buildWhereClause(f, query)
}
rows, err := query.RunWith(r.DB).Query()
if err != nil {
return nil, err
}
for rows.Next() {
var id sql.NullString
var shortJobs sql.NullInt64
if err := rows.Scan(&id, &shortJobs); err != nil {
return nil, err
}
if id.Valid {
stats[id.String].ShortJobs = int(shortJobs.Int64)
}
}
}
// Calculating the histogram data is expensive, so only do it if needed.
// An explicit resolver can not be used because we need to know the filters.
histogramsNeeded := false
fields := graphql.CollectFieldsCtx(ctx, nil)
for _, col := range fields {
if col.Name == "histWalltime" || col.Name == "histNumNodes" {
histogramsNeeded = true
}
}
res := make([]*model.JobsStatistics, 0, len(stats))
for _, stat := range stats {
res = append(res, stat)
id, col := "", ""
if groupBy != nil {
id = stat.ID
col = groupBy2column[*groupBy]
}
if histogramsNeeded {
var err error
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stat.HistWalltime, err = r.jobsStatisticsHistogram(ctx, "ROUND(job.duration / 3600) as value", filter, id, col)
if err != nil {
return nil, err
}
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stat.HistNumNodes, err = r.jobsStatisticsHistogram(ctx, "job.num_nodes as value", filter, id, col)
if err != nil {
return nil, err
}
}
}
return res, nil
}
// `value` must be the column grouped by, but renamed to "value". `id` and `col` can optionally be used
// to add a condition to the query of the kind "<col> = <id>".
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func (r *queryResolver) jobsStatisticsHistogram(ctx context.Context, value string, filters []*model.JobFilter, id, col string) ([]*model.HistoPoint, error) {
query := sq.Select(value, "COUNT(job.id) AS count").From("job")
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query = securityCheck(ctx, query)
for _, f := range filters {
query = buildWhereClause(f, query)
}
if len(id) != 0 && len(col) != 0 {
query = query.Where(col+" = ?", id)
}
rows, err := query.GroupBy("value").RunWith(r.DB).Query()
if err != nil {
return nil, err
}
points := make([]*model.HistoPoint, 0)
for rows.Next() {
point := model.HistoPoint{}
if err := rows.Scan(&point.Value, &point.Count); err != nil {
return nil, err
}
points = append(points, &point)
}
return points, nil
}
// Helper function for the rooflineHeatmap GraphQL query placed here so that schema.resolvers.go is not too full.
func (r *Resolver) rooflineHeatmap(ctx context.Context, filter []*model.JobFilter, rows int, cols int, minX float64, minY float64, maxX float64, maxY float64) ([][]float64, error) {
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jobs, count, err := r.queryJobs(ctx, filter, &model.PageRequest{Page: 1, ItemsPerPage: 501}, nil)
if err != nil {
return nil, err
}
if len(jobs) > 500 {
return nil, fmt.Errorf("too many jobs matched (matched: %d, max: %d)", count, 500)
}
fcols, frows := float64(cols), float64(rows)
minX, minY, maxX, maxY = math.Log10(minX), math.Log10(minY), math.Log10(maxX), math.Log10(maxY)
tiles := make([][]float64, rows)
for i := range tiles {
tiles[i] = make([]float64, cols)
}
for _, job := range jobs {
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jobdata, err := metricdata.LoadData(job, []string{"flops_any", "mem_bw"}, []schema.MetricScope{schema.MetricScopeNode}, ctx)
if err != nil {
return nil, err
}
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flops_, membw_ := jobdata["flops_any"], jobdata["mem_bw"]
if flops_ == nil && membw_ == nil {
return nil, fmt.Errorf("'flops_any' or 'mem_bw' missing for job %d", job.ID)
}
flops, ok1 := flops_["node"]
membw, ok2 := membw_["node"]
if !ok1 || !ok2 {
// TODO/FIXME:
return nil, errors.New("todo: rooflineHeatmap() query not implemented for where flops_any or mem_bw not available at 'node' level")
}
for n := 0; n < len(flops.Series); n++ {
flopsSeries, membwSeries := flops.Series[n], membw.Series[n]
for i := 0; i < len(flopsSeries.Data); i++ {
if i >= len(membwSeries.Data) {
break
}
x, y := math.Log10(float64(flopsSeries.Data[i]/membwSeries.Data[i])), math.Log10(float64(flopsSeries.Data[i]))
if math.IsNaN(x) || math.IsNaN(y) || x < minX || x >= maxX || y < minY || y > maxY {
continue
}
x, y = math.Floor(((x-minX)/(maxX-minX))*fcols), math.Floor(((y-minY)/(maxY-minY))*frows)
if x < 0 || x >= fcols || y < 0 || y >= frows {
continue
}
tiles[int(y)][int(x)] += 1
}
}
}
return tiles, nil
}
// Helper function for the jobsFootprints GraphQL query placed here so that schema.resolvers.go is not too full.
func (r *queryResolver) jobsFootprints(ctx context.Context, filter []*model.JobFilter, metrics []string) ([]*model.MetricFootprints, error) {
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jobs, count, err := r.queryJobs(ctx, filter, &model.PageRequest{Page: 1, ItemsPerPage: 501}, nil)
if err != nil {
return nil, err
}
if len(jobs) > 500 {
return nil, fmt.Errorf("too many jobs matched (matched: %d, max: %d)", count, 500)
}
avgs := make([][]schema.Float, len(metrics))
for i := range avgs {
avgs[i] = make([]schema.Float, 0, len(jobs))
}
for _, job := range jobs {
if err := metricdata.LoadAverages(job, metrics, avgs, ctx); err != nil {
return nil, err
}
}
res := make([]*model.MetricFootprints, len(avgs))
for i, arr := range avgs {
res[i] = &model.MetricFootprints{
Name: metrics[i],
Footprints: arr,
}
}
return res, nil
}