cc-backend/internal/metricdata/influxdb-v2.go

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// Copyright (C) 2022 NHR@FAU, University Erlangen-Nuremberg.
// All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
2022-06-21 17:52:36 +02:00
package metricdata
import (
"context"
"crypto/tls"
"encoding/json"
"errors"
"fmt"
"log"
"strings"
"time"
"github.com/ClusterCockpit/cc-backend/internal/config"
"github.com/ClusterCockpit/cc-backend/pkg/schema"
influxdb2 "github.com/influxdata/influxdb-client-go/v2"
influxdb2Api "github.com/influxdata/influxdb-client-go/v2/api"
)
type InfluxDBv2DataRepositoryConfig struct {
Url string `json:"url"`
Token string `json:"token"`
Bucket string `json:"bucket"`
Org string `json:"org"`
SkipTls bool `json:"skiptls"`
}
type InfluxDBv2DataRepository struct {
client influxdb2.Client
queryClient influxdb2Api.QueryAPI
bucket, measurement string
}
func (idb *InfluxDBv2DataRepository) Init(rawConfig json.RawMessage) error {
var config InfluxDBv2DataRepositoryConfig
if err := json.Unmarshal(rawConfig, &config); err != nil {
return err
}
idb.client = influxdb2.NewClientWithOptions(config.Url, config.Token, influxdb2.DefaultOptions().SetTLSConfig(&tls.Config{InsecureSkipVerify: config.SkipTls}))
idb.queryClient = idb.client.QueryAPI(config.Org)
idb.bucket = config.Bucket
return nil
}
func (idb *InfluxDBv2DataRepository) formatTime(t time.Time) string {
return t.Format(time.RFC3339) // Like “2006-01-02T15:04:05Z07:00”
}
func (idb *InfluxDBv2DataRepository) epochToTime(epoch int64) time.Time {
return time.Unix(epoch, 0)
}
func (idb *InfluxDBv2DataRepository) LoadData(job *schema.Job, metrics []string, scopes []schema.MetricScope, ctx context.Context) (schema.JobData, error) {
measurementsConds := make([]string, 0, len(metrics))
for _, m := range metrics {
measurementsConds = append(measurementsConds, fmt.Sprintf(`r["_measurement"] == "%s"`, m))
}
measurementsCond := strings.Join(measurementsConds, " or ")
hostsConds := make([]string, 0, len(job.Resources))
for _, h := range job.Resources {
if h.HWThreads != nil || h.Accelerators != nil {
// TODO
return nil, errors.New("the InfluxDB metric data repository does not yet support HWThreads or Accelerators")
}
hostsConds = append(hostsConds, fmt.Sprintf(`r["hostname"] == "%s"`, h.Hostname))
}
hostsCond := strings.Join(hostsConds, " or ")
jobData := make(schema.JobData) // Empty Schema: map[<string>FIELD]map[<MetricScope>SCOPE]<*JobMetric>METRIC
// Requested Scopes
for _, scope := range scopes {
query := ""
switch scope {
case "node":
// Get Finest Granularity, Groupy By Measurement and Hostname (== Metric / Node), Calculate Mean for 60s windows
// log.Println("Note: Scope 'node' requested. ")
query = fmt.Sprintf(`
from(bucket: "%s")
|> range(start: %s, stop: %s)
|> filter(fn: (r) => (%s) and (%s) )
|> drop(columns: ["_start", "_stop"])
|> group(columns: ["hostname", "_measurement"])
|> aggregateWindow(every: 60s, fn: mean)
|> drop(columns: ["_time"])`,
idb.bucket,
idb.formatTime(job.StartTime), idb.formatTime(idb.epochToTime(job.StartTimeUnix+int64(job.Duration)+int64(1))),
measurementsCond, hostsCond)
case "socket":
log.Println("Note: Scope 'socket' requested, but not yet supported: Will return 'node' scope only. ")
continue
case "core":
log.Println("Note: Scope 'core' requested, but not yet supported: Will return 'node' scope only. ")
continue
// Get Finest Granularity only, Set NULL to 0.0
// query = fmt.Sprintf(`
// from(bucket: "%s")
// |> range(start: %s, stop: %s)
// |> filter(fn: (r) => %s )
// |> filter(fn: (r) => %s )
// |> drop(columns: ["_start", "_stop", "cluster"])
// |> map(fn: (r) => (if exists r._value then {r with _value: r._value} else {r with _value: 0.0}))`,
// idb.bucket,
// idb.formatTime(job.StartTime), idb.formatTime(idb.epochToTime(job.StartTimeUnix + int64(job.Duration) + int64(1) )),
// measurementsCond, hostsCond)
default:
log.Println("Note: Unknown Scope requested: Will return 'node' scope. ")
continue
// return nil, errors.New("the InfluxDB metric data repository does not yet support other scopes than 'node'")
}
rows, err := idb.queryClient.Query(ctx, query)
if err != nil {
return nil, err
}
// Init Metrics: Only Node level now -> TODO: Matching /check on scope level ...
for _, metric := range metrics {
jobMetric, ok := jobData[metric]
if !ok {
mc := config.GetMetricConfig(job.Cluster, metric)
jobMetric = map[schema.MetricScope]*schema.JobMetric{
scope: { // uses scope var from above!
Unit: mc.Unit,
Scope: scope,
Timestep: mc.Timestep,
Series: make([]schema.Series, 0, len(job.Resources)),
StatisticsSeries: nil, // Should be: &schema.StatsSeries{},
},
}
}
jobData[metric] = jobMetric
}
// Process Result: Time-Data
field, host, hostSeries := "", "", schema.Series{}
// typeId := 0
switch scope {
case "node":
for rows.Next() {
row := rows.Record()
if host == "" || host != row.ValueByKey("hostname").(string) || rows.TableChanged() {
if host != "" {
// Append Series before reset
jobData[field][scope].Series = append(jobData[field][scope].Series, hostSeries)
}
field, host = row.Measurement(), row.ValueByKey("hostname").(string)
hostSeries = schema.Series{
Hostname: host,
Statistics: nil,
Data: make([]schema.Float, 0),
}
}
val, ok := row.Value().(float64)
if ok {
hostSeries.Data = append(hostSeries.Data, schema.Float(val))
} else {
hostSeries.Data = append(hostSeries.Data, schema.Float(0))
}
}
case "socket":
continue
case "core":
continue
// Include Series.Id in hostSeries
// for rows.Next() {
// row := rows.Record()
// if ( host == "" || host != row.ValueByKey("hostname").(string) || typeId != row.ValueByKey("type-id").(int) || rows.TableChanged() ) {
// if ( host != "" ) {
// // Append Series before reset
// jobData[field][scope].Series = append(jobData[field][scope].Series, hostSeries)
// }
// field, host, typeId = row.Measurement(), row.ValueByKey("hostname").(string), row.ValueByKey("type-id").(int)
// hostSeries = schema.Series{
// Hostname: host,
// Id: &typeId,
// Statistics: nil,
// Data: make([]schema.Float, 0),
// }
// }
// val := row.Value().(float64)
// hostSeries.Data = append(hostSeries.Data, schema.Float(val))
// }
default:
continue
// return nil, errors.New("the InfluxDB metric data repository does not yet support other scopes than 'node, core'")
}
// Append last Series
jobData[field][scope].Series = append(jobData[field][scope].Series, hostSeries)
}
// Get Stats
stats, err := idb.LoadStats(job, metrics, ctx)
if err != nil {
return nil, err
}
for _, scope := range scopes {
if scope == "node" { // No 'socket/core' support yet
for metric, nodes := range stats {
// log.Println(fmt.Sprintf("<< Add Stats for : Field %s >>", metric))
for node, stats := range nodes {
// log.Println(fmt.Sprintf("<< Add Stats for : Host %s : Min %.2f, Max %.2f, Avg %.2f >>", node, stats.Min, stats.Max, stats.Avg ))
for index, _ := range jobData[metric][scope].Series {
// log.Println(fmt.Sprintf("<< Try to add Stats to Series in Position %d >>", index))
if jobData[metric][scope].Series[index].Hostname == node {
// log.Println(fmt.Sprintf("<< Match for Series in Position %d : Host %s >>", index, jobData[metric][scope].Series[index].Hostname))
jobData[metric][scope].Series[index].Statistics = &schema.MetricStatistics{Avg: stats.Avg, Min: stats.Min, Max: stats.Max}
// log.Println(fmt.Sprintf("<< Result Inner: Min %.2f, Max %.2f, Avg %.2f >>", jobData[metric][scope].Series[index].Statistics.Min, jobData[metric][scope].Series[index].Statistics.Max, jobData[metric][scope].Series[index].Statistics.Avg))
}
}
}
}
}
}
// DEBUG:
// for _, scope := range scopes {
// for _, met := range metrics {
// for _, series := range jobData[met][scope].Series {
// log.Println(fmt.Sprintf("<< Result: %d data points for metric %s on %s with scope %s, Stats: Min %.2f, Max %.2f, Avg %.2f >>",
// len(series.Data), met, series.Hostname, scope,
// series.Statistics.Min, series.Statistics.Max, series.Statistics.Avg))
// }
// }
// }
return jobData, nil
}
func (idb *InfluxDBv2DataRepository) LoadStats(job *schema.Job, metrics []string, ctx context.Context) (map[string]map[string]schema.MetricStatistics, error) {
stats := map[string]map[string]schema.MetricStatistics{}
hostsConds := make([]string, 0, len(job.Resources))
for _, h := range job.Resources {
if h.HWThreads != nil || h.Accelerators != nil {
// TODO
return nil, errors.New("the InfluxDB metric data repository does not yet support HWThreads or Accelerators")
}
hostsConds = append(hostsConds, fmt.Sprintf(`r["hostname"] == "%s"`, h.Hostname))
}
hostsCond := strings.Join(hostsConds, " or ")
// lenMet := len(metrics)
for _, metric := range metrics {
// log.Println(fmt.Sprintf("<< You are here: %s (Index %d of %d metrics)", metric, index, lenMet))
query := fmt.Sprintf(`
data = from(bucket: "%s")
|> range(start: %s, stop: %s)
|> filter(fn: (r) => r._measurement == "%s" and r._field == "value" and (%s))
union(tables: [data |> mean(column: "_value") |> set(key: "_field", value: "avg"),
data |> min(column: "_value") |> set(key: "_field", value: "min"),
data |> max(column: "_value") |> set(key: "_field", value: "max")])
|> pivot(rowKey: ["hostname"], columnKey: ["_field"], valueColumn: "_value")
|> group()`,
idb.bucket,
idb.formatTime(job.StartTime), idb.formatTime(idb.epochToTime(job.StartTimeUnix+int64(job.Duration)+int64(1))),
metric, hostsCond)
rows, err := idb.queryClient.Query(ctx, query)
if err != nil {
return nil, err
}
nodes := map[string]schema.MetricStatistics{}
for rows.Next() {
row := rows.Record()
host := row.ValueByKey("hostname").(string)
avg, avgok := row.ValueByKey("avg").(float64)
if !avgok {
// log.Println(fmt.Sprintf(">> Assertion error for metric %s, statistic AVG. Expected 'float64', got %v", metric, avg))
avg = 0.0
}
min, minok := row.ValueByKey("min").(float64)
if !minok {
// log.Println(fmt.Sprintf(">> Assertion error for metric %s, statistic MIN. Expected 'float64', got %v", metric, min))
min = 0.0
}
max, maxok := row.ValueByKey("max").(float64)
if !maxok {
// log.Println(fmt.Sprintf(">> Assertion error for metric %s, statistic MAX. Expected 'float64', got %v", metric, max))
max = 0.0
}
nodes[host] = schema.MetricStatistics{
Avg: avg,
Min: min,
Max: max,
}
}
stats[metric] = nodes
}
return stats, nil
}
func (idb *InfluxDBv2DataRepository) LoadNodeData(cluster string, metrics, nodes []string, scopes []schema.MetricScope, from, to time.Time, ctx context.Context) (map[string]map[string][]*schema.JobMetric, error) {
// TODO : Implement to be used in Analysis- und System/Node-View
log.Println(fmt.Sprintf("LoadNodeData unimplemented for InfluxDBv2DataRepository, Args: cluster %s, metrics %v, nodes %v, scopes %v", cluster, metrics, nodes, scopes))
return nil, errors.New("unimplemented for InfluxDBv2DataRepository")
}