Implementation of resolvers for new GraphQL schema

config/config.go

@@ -0,0 +1,64 @@
+package config
+
+import (
+	"context"
+	"encoding/json"
+	"log"
+	"net/http"
+	"os"
+	"sync"
+)
+
+var lock sync.RWMutex
+var config map[string]interface{}
+
+const configFilePath string = "./var/ui.config.json"
+
+func init() {
+	lock.Lock()
+	defer lock.Unlock()
+
+	bytes, err := os.ReadFile(configFilePath)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	if err := json.Unmarshal(bytes, &config); err != nil {
+		log.Fatal(err)
+	}
+}
+
+// Call this function to change the current configuration.
+// `value` must be valid JSON. This This function is thread-safe.
+func UpdateConfig(key, value string, ctx context.Context) error {
+	var v interface{}
+	if err := json.Unmarshal([]byte(value), &v); err != nil {
+		return err
+	}
+
+	lock.Lock()
+	defer lock.Unlock()
+
+	config[key] = v
+	bytes, err := json.Marshal(config)
+	if err != nil {
+		return err
+	}
+
+	if err := os.WriteFile(configFilePath, bytes, 0644); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// http.HandlerFunc compatible function that serves the current configuration as JSON
+func ServeConfig(rw http.ResponseWriter, r *http.Request) {
+	lock.RLock()
+	defer lock.RUnlock()
+
+	rw.Header().Set("Content-Type", "application/json")
+	if err := json.NewEncoder(rw).Encode(config); err != nil {
+		http.Error(rw, err.Error(), http.StatusInternalServerError)
+	}
+}

go.mod

@@ -4,6 +4,7 @@ go 1.15
 
 require (
 	github.com/99designs/gqlgen v0.13.0
+	github.com/Masterminds/squirrel v1.5.1
 	github.com/gorilla/handlers v1.5.1
 	github.com/gorilla/mux v1.6.1
 	github.com/jmoiron/sqlx v1.3.1

go.sum

@@ -1,6 +1,8 @@
 github.com/99designs/gqlgen v0.13.0 h1:haLTcUp3Vwp80xMVEg5KRNwzfUrgFdRmtBY8fuB8scA=
 github.com/99designs/gqlgen v0.13.0/go.mod h1:NV130r6f4tpRWuAI+zsrSdooO/eWUv+Gyyoi3rEfXIk=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
+github.com/Masterminds/squirrel v1.5.1 h1:kWAKlLLJFxZG7N2E0mBMNWVp5AuUX+JUrnhFN74Eg+w=
+github.com/Masterminds/squirrel v1.5.1/go.mod h1:NNaOrjSoIDfDA40n7sr2tPNZRfjzjA400rg+riTZj10=
 github.com/agnivade/levenshtein v1.0.1/go.mod h1:CURSv5d9Uaml+FovSIICkLbAUZ9S4RqaHDIsdSBg7lM=
 github.com/agnivade/levenshtein v1.0.3 h1:M5ZnqLOoZR8ygVq0FfkXsNOKzMCk0xRiow0R5+5VkQ0=
 github.com/agnivade/levenshtein v1.0.3/go.mod h1:4SFRZbbXWLF4MU1T9Qg0pGgH3Pjs+t6ie5efyrwRJXs=
@@ -8,6 +10,7 @@ github.com/andreyvit/diff v0.0.0-20170406064948-c7f18ee00883 h1:bvNMNQO63//z+xNg
 github.com/andreyvit/diff v0.0.0-20170406064948-c7f18ee00883/go.mod h1:rCTlJbsFo29Kk6CurOXKm700vrz8f0KW0JNfpkRJY/8=
 github.com/arbovm/levenshtein v0.0.0-20160628152529-48b4e1c0c4d0 h1:jfIu9sQUG6Ig+0+Ap1h4unLjW6YQJpKZVmUzxsD4E/Q=
 github.com/arbovm/levenshtein v0.0.0-20160628152529-48b4e1c0c4d0/go.mod h1:t2tdKJDJF9BV14lnkjHmOQgcvEKgtqs5a1N3LNdJhGE=
+github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d h1:U+s90UTSYgptZMwQh2aRr3LuazLJIa+Pg3Kc1ylSYVY=
 github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
@@ -37,6 +40,10 @@ github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORN
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
+github.com/lann/builder v0.0.0-20180802200727-47ae307949d0 h1:SOEGU9fKiNWd/HOJuq6+3iTQz8KNCLtVX6idSoTLdUw=
+github.com/lann/builder v0.0.0-20180802200727-47ae307949d0/go.mod h1:dXGbAdH5GtBTC4WfIxhKZfyBF/HBFgRZSWwZ9g/He9o=
+github.com/lann/ps v0.0.0-20150810152359-62de8c46ede0 h1:P6pPBnrTSX3DEVR4fDembhRWSsG5rVo6hYhAB/ADZrk=
+github.com/lann/ps v0.0.0-20150810152359-62de8c46ede0/go.mod h1:vmVJ0l/dxyfGW6FmdpVm2joNMFikkuWg0EoCKLGUMNw=
 github.com/lib/pq v1.2.0 h1:LXpIM/LZ5xGFhOpXAQUIMM1HdyqzVYM13zNdjCEEcA0=
 github.com/lib/pq v1.2.0/go.mod h1:5WUZQaWbwv1U+lTReE5YruASi9Al49XbQIvNi/34Woo=
 github.com/logrusorgru/aurora v0.0.0-20200102142835-e9ef32dff381/go.mod h1:7rIyQOR62GCctdiQpZ/zOJlFyk6y+94wXzv6RNZgaR4=
@@ -50,20 +57,25 @@ github.com/mitchellh/mapstructure v0.0.0-20180203102830-a4e142e9c047 h1:zCoDWFD5
 github.com/mitchellh/mapstructure v0.0.0-20180203102830-a4e142e9c047/go.mod h1:FVVH3fgwuzCH5S8UJGiWEs2h04kUh9fWfEaFds41c1Y=
 github.com/opentracing/basictracer-go v1.0.0/go.mod h1:QfBfYuafItcjQuMwinw9GhYKwFXS9KnPs5lxoYwgW74=
 github.com/opentracing/opentracing-go v1.0.2/go.mod h1:UkNAQd3GIcIGf0SeVgPpRdFStlNbqXla1AfSYxPUl2o=
+github.com/pkg/errors v0.8.1 h1:iURUrRGxPUNPdy5/HRSm+Yj6okJ6UtLINN0Q9M4+h3I=
 github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/rs/cors v1.6.0/go.mod h1:gFx+x8UowdsKA9AchylcLynDq+nNFfI8FkUZdN/jGCU=
+github.com/russross/blackfriday/v2 v2.0.1 h1:lPqVAte+HuHNfhJ/0LC98ESWRz8afy9tM/0RK8m9o+Q=
 github.com/russross/blackfriday/v2 v2.0.1/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
 github.com/sergi/go-diff v1.1.0 h1:we8PVUC3FE2uYfodKH/nBHMSetSfHDR6scGdBi+erh0=
 github.com/sergi/go-diff v1.1.0/go.mod h1:STckp+ISIX8hZLjrqAeVduY0gWCT9IjLuqbuNXdaHfM=
 github.com/shurcooL/httpfs v0.0.0-20171119174359-809beceb2371/go.mod h1:ZY1cvUeJuFPAdZ/B6v7RHavJWZn2YPVFQ1OSXhCGOkg=
+github.com/shurcooL/sanitized_anchor_name v1.0.0 h1:PdmoCO6wvbs+7yrJyMORt4/BmY5IYyJwS/kOiWx8mHo=
 github.com/shurcooL/sanitized_anchor_name v1.0.0/go.mod h1:1NzhyTcUVG4SuEtjjoZeVRXNmyL/1OwPU0+IJeTBvfc=
 github.com/shurcooL/vfsgen v0.0.0-20180121065927-ffb13db8def0/go.mod h1:TrYk7fJVaAttu97ZZKrO9UbRa8izdowaMIZcxYMbVaw=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.2.1/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
+github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
 github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJyk=
 github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
+github.com/urfave/cli/v2 v2.1.1 h1:Qt8FeAtxE/vfdrLmR3rxR6JRE0RoVmbXu8+6kZtYU4k=
 github.com/urfave/cli/v2 v2.1.1/go.mod h1:SE9GqnLQmjVa0iPEY0f1w3ygNIYcIJ0OKPMoW2caLfQ=
 github.com/vektah/dataloaden v0.2.1-0.20190515034641-a19b9a6e7c9e/go.mod h1:/HUdMve7rvxZma+2ZELQeNh88+003LL7Pf/CZ089j8U=
 github.com/vektah/gqlparser/v2 v2.1.0 h1:uiKJ+T5HMGGQM2kRKQ8Pxw8+Zq9qhhZhz/lieYvCMns=
@@ -82,6 +94,7 @@ golang.org/x/sys v0.0.0-20200116001909-b77594299b42/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/tools v0.0.0-20190125232054-d66bd3c5d5a6/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20190515012406-7d7faa4812bd/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
+golang.org/x/tools v0.0.0-20200114235610-7ae403b6b589 h1:rjUrONFu4kLchcZTfp3/96bR8bW8dIa8uz3cR5n0cgM=
 golang.org/x/tools v0.0.0-20200114235610-7ae403b6b589/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=

graph/analysis.go

@@ -1,16 +0,0 @@
-package graph
-
-import (
-	"context"
-	"errors"
-
-	"github.com/ClusterCockpit/cc-jobarchive/graph/model"
-)
-
-func (r *queryResolver) JobMetricAverages(ctx context.Context, filter model.JobFilterList, metrics []*string) ([][]*float64, error) {
-	return nil, errors.New("unimplemented")
-}
-
-func (r *queryResolver) RooflineHeatmap(ctx context.Context, filter model.JobFilterList, rows, cols int, minX, minY, maxX, maxY float64) ([][]float64, error) {
-	return nil, errors.New("unimplemented")
-}

graph/config.go

@@ -1,10 +0,0 @@
-package graph
-
-import (
-	"context"
-	"errors"
-)
-
-func (r *mutationResolver) UpdateConfiguration(ctx context.Context, key, value string) (*string, error) {
-	return nil, errors.New("unimplemented")
-}

graph/resolver.go

@@ -1,149 +1,188 @@
 package graph
 
-//go:generate go run github.com/99designs/gqlgen
 import (
-	"context"
+	"errors"
-	"encoding/json"
 	"fmt"
-	"log"
-	"os"
 	"regexp"
-	"strconv"
 	"strings"
-	"time"
 
-	"github.com/ClusterCockpit/cc-jobarchive/graph/generated"
 	"github.com/ClusterCockpit/cc-jobarchive/graph/model"
+	sq "github.com/Masterminds/squirrel"
 	"github.com/jmoiron/sqlx"
 )
 
-const jobArchiveDirectory string = "./job-data/"
+// This file will not be regenerated automatically.
+//
+// It serves as dependency injection for your app, add any dependencies you require here.
 
 type Resolver struct {
-	DB *sqlx.DB
+	DB             *sqlx.DB
+	ClusterConfigs []*model.Cluster
 }
 
-func NewRootResolvers(db *sqlx.DB) generated.Config {
+var jobTableCols []string = []string{"id", "job_id", "user_id", "project_id", "cluster_id", "start_time", "duration", "job_state", "num_nodes", "node_list", "flops_any_avg", "mem_bw_avg", "net_bw_avg", "file_bw_avg", "load_avg"}
-	c := generated.Config{
-		Resolvers: &Resolver{
-			DB: db,
-		},
-	}
 
-	return c
+type Scannable interface {
+	Scan(dest ...interface{}) error
 }
 
-// Helper functions
+// Helper function for scanning jobs with the `jobTableCols` columns selected.
+func scanJob(row Scannable) (*model.Job, error) {
+	job := &model.Job{HasProfile: true}
 
-func addStringCondition(conditions []string, field string, input *model.StringInput) []string {
+	var nodeList string
-	if input.Eq != nil {
+	if err := row.Scan(
-		conditions = append(conditions, fmt.Sprintf("%s='%s'", field, *input.Eq))
+		&job.ID, &job.JobID, &job.UserID, &job.ProjectID, &job.ClusterID,
-	}
+		&job.StartTime, &job.Duration, &job.State, &job.NumNodes, &nodeList,
-	if input.StartsWith != nil {
+		&job.FlopsAnyAvg, &job.MemBwAvg, &job.NetBwAvg, &job.FileBwAvg, &job.LoadAvg); err != nil {
-		conditions = append(conditions, fmt.Sprintf("%s LIKE '%s%%'", field, *input.StartsWith))
-	}
-	if input.Contains != nil {
-		conditions = append(conditions, fmt.Sprintf("%s LIKE '%%%s%%'", field, *input.Contains))
-	}
-	if input.EndsWith != nil {
-		conditions = append(conditions, fmt.Sprintf("%s LIKE '%%%s'", field, *input.EndsWith))
-	}
-
-	return conditions
-}
-
-func addIntCondition(conditions []string, field string, input *model.IntRange) []string {
-	conditions = append(conditions, fmt.Sprintf("%s BETWEEN %d AND %d", field, input.From, input.To))
-	return conditions
-}
-
-func addTimeCondition(conditions []string, field string, input *model.TimeRange) []string {
-	conditions = append(conditions, fmt.Sprintf("%s BETWEEN %d AND %d", field, input.From.Unix(), input.To.Unix()))
-	return conditions
-}
-
-func addFloatCondition(conditions []string, field string, input *model.FloatRange) []string {
-	conditions = append(conditions, fmt.Sprintf("%s BETWEEN %f AND %f", field, input.From, input.To))
-	return conditions
-}
-
-func buildQueryConditions(filterList *model.JobFilterList) (string, string) {
-	var conditions []string
-	var join string
-
-	for _, condition := range filterList.List {
-		if condition.Tags != nil && len(condition.Tags) > 0 {
-			conditions = append(conditions, "jobtag.tag_id IN ('"+strings.Join(condition.Tags, "', '")+"')")
-			join = ` JOIN jobtag ON jobtag.job_id = job.id `
-		}
-		if condition.JobID != nil {
-			conditions = addStringCondition(conditions, `job.job_id`, condition.JobID)
-		}
-		if condition.UserID != nil {
-			conditions = addStringCondition(conditions, `user_id`, condition.UserID)
-		}
-		if condition.ProjectID != nil {
-			conditions = addStringCondition(conditions, `project_id`, condition.ProjectID)
-		}
-		if condition.ClusterID != nil {
-			conditions = addStringCondition(conditions, `cluster_id`, condition.ClusterID)
-		}
-		if condition.StartTime != nil {
-			conditions = addTimeCondition(conditions, `start_time`, condition.StartTime)
-		}
-		if condition.Duration != nil {
-			conditions = addIntCondition(conditions, `duration`, condition.Duration)
-		}
-		if condition.NumNodes != nil {
-			conditions = addIntCondition(conditions, `num_nodes`, condition.NumNodes)
-		}
-		if condition.FlopsAnyAvg != nil {
-			conditions = addFloatCondition(conditions, `flops_any_avg`, condition.FlopsAnyAvg)
-		}
-		if condition.MemBwAvg != nil {
-			conditions = addFloatCondition(conditions, `mem_bw_avg`, condition.MemBwAvg)
-		}
-		if condition.LoadAvg != nil {
-			conditions = addFloatCondition(conditions, `load_avg`, condition.LoadAvg)
-		}
-		if condition.MemUsedMax != nil {
-			conditions = addFloatCondition(conditions, `mem_used_max`, condition.MemUsedMax)
-		}
-	}
-
-	return strings.Join(conditions, " AND "), join
-}
-
-func readJobDataFile(jobId string, clusterId *string) ([]byte, error) {
-	jobId = strings.Split(jobId, ".")[0]
-	id, err := strconv.Atoi(jobId)
-	if err != nil {
 		return nil, err
 	}
 
-	lvl1, lvl2 := id/1000, id%1000
+	job.Nodes = strings.Split(nodeList, ",")
-	var filepath string
+	return job, nil
-	if clusterId == nil {
+}
-		filepath = fmt.Sprintf("%s%d/%03d/data.json", jobArchiveDirectory, lvl1, lvl2)
+
+// Helper function for the `jobs` GraphQL-Query. Is also used elsewhere when a list of jobs is needed.
+func (r *Resolver) queryJobs(filters []*model.JobFilter, page *model.PageRequest, order *model.OrderByInput) ([]*model.Job, int, error) {
+	query := sq.Select(jobTableCols...).From("job")
+
+	if order != nil {
+		field := toSnakeCase(order.Field)
+		if order.Order == model.SortDirectionEnumAsc {
+			query = query.OrderBy(fmt.Sprintf("job.%s ASC", field))
+		} else if order.Order == model.SortDirectionEnumDesc {
+			query = query.OrderBy(fmt.Sprintf("job.%s DESC", field))
+		} else {
+			return nil, 0, errors.New("invalid sorting order")
+		}
+	}
+
+	if page != nil {
+		limit := uint64(page.ItemsPerPage)
+		query = query.Offset((uint64(page.Page) - 1) * limit).Limit(limit)
 	} else {
-		filepath = fmt.Sprintf("%s%s/%d/%03d/data.json", jobArchiveDirectory, *clusterId, lvl1, lvl2)
+		query = query.Limit(50)
 	}
 
-	f, err := os.ReadFile(filepath)
+	for _, f := range filters {
+		query = buildWhereClause(f, query)
+	}
+
+	rows, err := query.RunWith(r.DB).Query()
 	if err != nil {
-		return nil, err
+		return nil, 0, err
+	}
+	defer rows.Close()
+
+	jobs := make([]*model.Job, 0, 50)
+	for rows.Next() {
+		job, err := scanJob(rows)
+		if err != nil {
+			return nil, 0, err
+		}
+		jobs = append(jobs, job)
 	}
 
-	return f, nil
+	query = sq.Select("count(*)").From("job")
+	for _, f := range filters {
+		query = buildWhereClause(f, query)
+	}
+	rows, err = query.RunWith(r.DB).Query()
+	if err != nil {
+		return nil, 0, err
+	}
+	defer rows.Close()
+	var count int
+	rows.Next()
+	if err := rows.Scan(&count); err != nil {
+		return nil, 0, err
+	}
+
+	return jobs, count, nil
 }
 
-func contains(s []*string, e string) bool {
+// Build a sq.SelectBuilder out of a model.JobFilter.
-	for _, a := range s {
+func buildWhereClause(filter *model.JobFilter, query sq.SelectBuilder) sq.SelectBuilder {
-		if a != nil && *a == e {
+	if filter.Tags != nil {
-			return true
+		query = query.Join("jobtag ON jobtag.job_id = job.id").Where("jobtag.tag_id IN ?", filter.Tags)
+	}
+	if filter.JobID != nil {
+		query = buildStringCondition("job.job_id", filter.JobID, query)
+	}
+	if filter.UserID != nil {
+		query = buildStringCondition("job.user_id", filter.UserID, query)
+	}
+	if filter.ProjectID != nil {
+		query = buildStringCondition("job.project_id", filter.ProjectID, query)
+	}
+	if filter.ClusterID != nil {
+		query = buildStringCondition("job.cluster_id", filter.ClusterID, query)
+	}
+	if filter.StartTime != nil {
+		query = buildTimeCondition("job.start_time", filter.StartTime, query)
+	}
+	if filter.Duration != nil {
+		query = buildIntCondition("job.duration", filter.Duration, query)
+	}
+	if filter.IsRunning != nil {
+		if *filter.IsRunning {
+			query = query.Where("job.job_state = 'running'")
+		} else {
+			query = query.Where("job.job_state = 'completed'")
 		}
 	}
-	return false
+	if filter.NumNodes != nil {
+		query = buildIntCondition("job.num_nodes", filter.NumNodes, query)
+	}
+	if filter.FlopsAnyAvg != nil {
+		query = buildFloatCondition("job.flops_any_avg", filter.FlopsAnyAvg, query)
+	}
+	if filter.MemBwAvg != nil {
+		query = buildFloatCondition("job.mem_bw_avg", filter.MemBwAvg, query)
+	}
+	if filter.LoadAvg != nil {
+		query = buildFloatCondition("job.load_avg", filter.LoadAvg, query)
+	}
+	if filter.MemUsedMax != nil {
+		query = buildFloatCondition("job.mem_used_max", filter.MemUsedMax, query)
+	}
+	return query
+}
+
+func buildIntCondition(field string, cond *model.IntRange, query sq.SelectBuilder) sq.SelectBuilder {
+	return query.Where(field+" BETWEEN ? AND ?", cond.From, cond.To)
+}
+
+func buildTimeCondition(field string, cond *model.TimeRange, query sq.SelectBuilder) sq.SelectBuilder {
+	if cond.From != nil && cond.To != nil {
+		return query.Where(field+" BETWEEN ? AND ?", cond.From.Unix(), cond.To.Unix())
+	} else if cond.From != nil {
+		return query.Where("? <= "+field, cond.From.Unix())
+	} else if cond.To != nil {
+		return query.Where(field+" <= ?", cond.To.Unix())
+	} else {
+		return query
+	}
+}
+
+func buildFloatCondition(field string, cond *model.FloatRange, query sq.SelectBuilder) sq.SelectBuilder {
+	return query.Where(field+" BETWEEN ? AND ?", cond.From, cond.To)
+}
+
+func buildStringCondition(field string, cond *model.StringInput, query sq.SelectBuilder) sq.SelectBuilder {
+	if cond.Eq != nil {
+		return query.Where(field+" = ?", *cond.Eq)
+	}
+	if cond.StartsWith != nil {
+		return query.Where(field+"LIKE ?", fmt.Sprint(*cond.StartsWith, "%"))
+	}
+	if cond.EndsWith != nil {
+		return query.Where(field+"LIKE ?", fmt.Sprint("%", *cond.StartsWith))
+	}
+	if cond.Contains != nil {
+		return query.Where(field+"LIKE ?", fmt.Sprint("%", *cond.StartsWith, "%"))
+	}
+	return query
 }
 
 func toSnakeCase(str string) string {
@@ -153,438 +192,3 @@ func toSnakeCase(str string) string {
 	snake = matchAllCap.ReplaceAllString(snake, "${1}_${2}")
 	return strings.ToLower(snake)
 }
-
-func tagsForJob(DB *sqlx.DB, job string) ([]*model.JobTag, error) {
-	rows, err := DB.Queryx(`
-		SELECT tag.id, tag.tag_name, tag.tag_type FROM tag
-		JOIN jobtag ON tag.id = jobtag.tag_id
-		WHERE jobtag.job_id = $1
-	`, job)
-	if err != nil {
-		return nil, err
-	}
-
-	tags := []*model.JobTag{}
-	for rows.Next() {
-		var tag model.JobTag
-		err = rows.StructScan(&tag)
-		if err != nil {
-			return nil, err
-		}
-		tags = append(tags, &tag)
-	}
-
-	return tags, nil
-}
-
-// Queries
-
-func (r *queryResolver) JobByID(
-	ctx context.Context,
-	jobID string) (*model.Job, error) {
-	var job model.Job
-	qstr := `SELECT * from job `
-	qstr += fmt.Sprintf("WHERE id=%s", jobID)
-
-	row := r.DB.QueryRowx(qstr)
-	err := row.StructScan(&job)
-	if err != nil {
-		return nil, err
-	}
-
-	return &job, nil
-}
-
-func (r *queryResolver) Jobs(
-	ctx context.Context,
-	filterList *model.JobFilterList,
-	page *model.PageRequest,
-	orderBy *model.OrderByInput) (*model.JobResultList, error) {
-
-	var jobs []*model.Job
-	var limit, offset int
-	var qc, ob, jo string
-
-	limit = page.ItemsPerPage
-	offset = (page.Page - 1) * limit
-
-	if filterList != nil {
-		qc, jo = buildQueryConditions(filterList)
-
-		if qc != "" {
-			qc = `WHERE ` + qc
-		}
-
-		if jo != "" {
-			qc = jo + qc
-		}
-	}
-
-	if orderBy != nil {
-		ob = fmt.Sprintf("ORDER BY %s %s",
-			toSnakeCase(orderBy.Field), *orderBy.Order)
-	}
-
-	qstr := `SELECT job.* `
-	qstr += fmt.Sprintf("FROM job %s %s LIMIT %d OFFSET %d", qc, ob, limit, offset)
-	log.Printf("%s", qstr)
-
-	rows, err := r.DB.Queryx(qstr)
-	if err != nil {
-		return nil, err
-	}
-	defer rows.Close()
-
-	for rows.Next() {
-		var job model.Job
-		err := rows.StructScan(&job)
-		if err != nil {
-			fmt.Println(err)
-		}
-		jobs = append(jobs, &job)
-	}
-
-	var count int
-	qstr = fmt.Sprintf("SELECT COUNT(*) FROM job %s", qc)
-	row := r.DB.QueryRow(qstr)
-	err = row.Scan(&count)
-	if err != nil {
-		return nil, err
-	}
-
-	returnValue := model.JobResultList{
-		jobs,
-		&offset, &limit,
-		&count}
-
-	return &returnValue, nil
-}
-
-func (r *queryResolver) JobsStatistics(
-	ctx context.Context,
-	filterList *model.JobFilterList) (*model.JobsStatistics, error) {
-	var qc, jo string
-
-	if filterList != nil {
-		qc, jo = buildQueryConditions(filterList)
-
-		if qc != "" {
-			qc = `WHERE ` + qc
-		}
-
-		if jo != "" {
-			qc = jo + qc
-		}
-	}
-
-	// TODO Change current node hours to core hours
-	qstr := `SELECT COUNT(*), SUM(duration)/3600, SUM(duration*num_nodes)/3600  `
-	qstr += fmt.Sprintf("FROM job %s ", qc)
-	log.Printf("%s", qstr)
-
-	var stats model.JobsStatistics
-	row := r.DB.QueryRow(qstr)
-	err := row.Scan(&stats.TotalJobs, &stats.TotalWalltime, &stats.TotalCoreHours)
-	if err != nil {
-		return nil, err
-	}
-
-	qstr = `SELECT COUNT(*) `
-	qstr += fmt.Sprintf("FROM job %s AND duration < 120", qc)
-	log.Printf("%s", qstr)
-	row = r.DB.QueryRow(qstr)
-	err = row.Scan(&stats.ShortJobs)
-	if err != nil {
-		return nil, err
-	}
-
-	var histogram []*model.HistoPoint
-	// Node histogram
-	qstr = `SELECT num_nodes, COUNT(*) `
-	qstr += fmt.Sprintf("FROM job %s GROUP BY 1", qc)
-	log.Printf("%s", qstr)
-
-	rows, err := r.DB.Query(qstr)
-	if err != nil {
-		return nil, err
-	}
-	defer rows.Close()
-
-	for rows.Next() {
-		var point model.HistoPoint
-		rows.Scan(&point.Count, &point.Value)
-		histogram = append(histogram, &point)
-	}
-	stats.HistNumNodes = histogram
-
-	// Node histogram
-	qstr = `SELECT duration/3600, COUNT(*) `
-	qstr += fmt.Sprintf("FROM job %s GROUP BY 1", qc)
-	log.Printf("%s", qstr)
-
-	rows, err = r.DB.Query(qstr)
-	if err != nil {
-		return nil, err
-	}
-	defer rows.Close()
-
-	histogram = nil
-
-	for rows.Next() {
-		var point model.HistoPoint
-		rows.Scan(&point.Count, &point.Value)
-		histogram = append(histogram, &point)
-	}
-	stats.HistWalltime = histogram
-
-	return &stats, nil
-}
-
-func (r *queryResolver) Clusters(ctx context.Context) ([]*model.Cluster, error) {
-	files, err := os.ReadDir(jobArchiveDirectory)
-	if err != nil {
-		return nil, err
-	}
-
-	var clusters []*model.Cluster
-	for _, entry := range files {
-		f, err := os.ReadFile(jobArchiveDirectory + entry.Name() + `/cluster.json`)
-		if err != nil {
-			return nil, err
-		}
-
-		var cluster model.Cluster
-		err = json.Unmarshal(f, &cluster)
-		if err != nil {
-			return nil, err
-		}
-
-		clusters = append(clusters, &cluster)
-	}
-
-	return clusters, nil
-}
-
-func (r *queryResolver) JobMetrics(
-	ctx context.Context, jobId string, clusterId *string,
-	metrics []*string) ([]*model.JobMetricWithName, error) {
-
-	f, err := readJobDataFile(jobId, clusterId)
-	if err != nil {
-		return nil, err
-	}
-
-	var list []*model.JobMetricWithName
-	var metricMap map[string]*model.JobMetric
-
-	err = json.Unmarshal(f, &metricMap)
-	if err != nil {
-		return nil, err
-	}
-
-	for name, metric := range metricMap {
-		if metrics == nil || contains(metrics, name) {
-			list = append(list, &model.JobMetricWithName{name, metric})
-		}
-	}
-
-	return list, nil
-}
-
-func (r *queryResolver) Tags(
-	ctx context.Context) ([]*model.JobTag, error) {
-
-	rows, err := r.DB.Queryx("SELECT * FROM tag")
-	if err != nil {
-		return nil, err
-	}
-
-	tags := []*model.JobTag{}
-	for rows.Next() {
-		var tag model.JobTag
-		err = rows.StructScan(&tag)
-		if err != nil {
-			return nil, err
-		}
-		tags = append(tags, &tag)
-	}
-	return tags, nil
-}
-
-func (r *queryResolver) FilterRanges(
-	ctx context.Context) (*model.FilterRanges, error) {
-
-	rows, err := r.DB.Query(`
-	SELECT MIN(duration), MAX(duration),
-	MIN(num_nodes), MAX(num_nodes),
-	MIN(start_time), MAX(start_time) FROM job
-	`)
-	defer rows.Close()
-	if err != nil {
-		return nil, err
-	}
-
-	if !rows.Next() {
-		panic("expected exactly one row")
-	}
-
-	duration := &model.IntRangeOutput{}
-	numNodes := &model.IntRangeOutput{}
-	var startTimeMin, startTimeMax int64
-
-	err = rows.Scan(&duration.From, &duration.To,
-		&numNodes.From, &numNodes.To,
-		&startTimeMin, &startTimeMax)
-	if err != nil {
-		return nil, err
-	}
-
-	startTime := &model.TimeRangeOutput{
-		time.Unix(startTimeMin, 0), time.Unix(startTimeMax, 0)}
-	return &model.FilterRanges{duration, numNodes, startTime}, nil
-}
-
-func (r *jobResolver) Tags(ctx context.Context, job *model.Job) ([]*model.JobTag, error) {
-	tags, err := tagsForJob(r.DB, job.ID)
-	return tags, err
-}
-
-func (r *clusterResolver) FilterRanges(
-	ctx context.Context, cluster *model.Cluster) (*model.FilterRanges, error) {
-
-	rows, err := r.DB.Query(`
-	SELECT MIN(duration), MAX(duration),
-	MIN(num_nodes), MAX(num_nodes),
-	MIN(start_time), MAX(start_time)
-	FROM job WHERE job.cluster_id = $1
-	`, cluster.ClusterID)
-	defer rows.Close()
-	if err != nil {
-		return nil, err
-	}
-
-	if !rows.Next() {
-		panic("expected exactly one row")
-	}
-
-	duration := &model.IntRangeOutput{}
-	numNodes := &model.IntRangeOutput{}
-	var startTimeMin, startTimeMax int64
-
-	err = rows.Scan(&duration.From, &duration.To,
-		&numNodes.From, &numNodes.To,
-		&startTimeMin, &startTimeMax)
-	if err != nil {
-		return nil, err
-	}
-
-	startTime := &model.TimeRangeOutput{
-		time.Unix(startTimeMin, 0), time.Unix(startTimeMax, 0)}
-	return &model.FilterRanges{duration, numNodes, startTime}, nil
-}
-
-func (r *mutationResolver) CreateTag(
-	ctx context.Context, tagType string, tagName string) (*model.JobTag, error) {
-
-	res, err := r.DB.Exec(`
-		INSERT INTO tag (tag_type, tag_name) VALUES ($1, $2)
-	`, tagType, tagName)
-	if err != nil {
-		return nil, err
-	}
-
-	id, err := res.LastInsertId()
-	if err != nil {
-		return nil, err
-	}
-
-	tag := &model.JobTag{
-		strconv.FormatInt(id, 10),
-		tagType,
-		tagName,
-	}
-
-	return tag, nil
-}
-
-func (r *mutationResolver) DeleteTag(
-	ctx context.Context, id string) (string, error) {
-
-	intid, err := strconv.Atoi(id)
-	if err != nil {
-		return "", err
-	}
-
-	_, err = r.DB.Exec(`
-		DELETE FROM jobtag WHERE jobtag.tag_id = $1;
-		DELETE FROM tag WHERE tag.id = $2
-	`, intid, intid)
-	if err != nil {
-		return "", err
-	}
-
-	return id, nil
-}
-
-func (r *mutationResolver) AddTagsToJob(
-	ctx context.Context, job string, tagIds []string) ([]*model.JobTag, error) {
-
-	intid, err := strconv.Atoi(job)
-	if err != nil {
-		return nil, err
-	}
-
-	for _, tagId := range tagIds {
-		intTagId, err := strconv.Atoi(tagId)
-		if err != nil {
-			return nil, err
-		}
-
-		_, err = r.DB.Exec(`
-			INSERT INTO jobtag (job_id, tag_id) VALUES ($1, $2)
-		`, intid, intTagId)
-		if err != nil {
-			return nil, err
-		}
-	}
-
-	tags, err := tagsForJob(r.DB, job)
-	return tags, err
-}
-
-func (r *mutationResolver) RemoveTagsFromJob(
-	ctx context.Context, job string, tagIds []string) ([]*model.JobTag, error) {
-
-	intid, err := strconv.Atoi(job)
-	if err != nil {
-		return nil, err
-	}
-
-	for _, tagId := range tagIds {
-		intTagId, err := strconv.Atoi(tagId)
-		if err != nil {
-			return nil, err
-		}
-
-		_, err = r.DB.Exec(`
-			DELETE FROM jobtag
-			WHERE jobtag.job_id = $1 AND jobtag.tag_id = $2
-		`, intid, intTagId)
-		if err != nil {
-			return nil, err
-		}
-	}
-
-	tags, err := tagsForJob(r.DB, job)
-	return tags, err
-}
-
-func (r *Resolver) Job() generated.JobResolver           { return &jobResolver{r} }
-func (r *Resolver) Cluster() generated.ClusterResolver   { return &clusterResolver{r} }
-func (r *Resolver) Query() generated.QueryResolver       { return &queryResolver{r} }
-func (r *Resolver) Mutation() generated.MutationResolver { return &mutationResolver{r} }
-
-type jobResolver struct{ *Resolver }
-type clusterResolver struct{ *Resolver }
-type queryResolver struct{ *Resolver }
-type mutationResolver struct{ *Resolver }

graph/schema.resolvers.go

@@ -2,3 +2,210 @@ package graph
 
 // This file will be automatically regenerated based on the schema, any resolver implementations
 // will be copied through when generating and any unknown code will be moved to the end.
+
+import (
+	"context"
+	"fmt"
+	"strconv"
+
+	"github.com/ClusterCockpit/cc-jobarchive/config"
+	"github.com/ClusterCockpit/cc-jobarchive/graph/generated"
+	"github.com/ClusterCockpit/cc-jobarchive/graph/model"
+	"github.com/ClusterCockpit/cc-jobarchive/metricdata"
+	sq "github.com/Masterminds/squirrel"
+)
+
+func (r *jobResolver) Tags(ctx context.Context, obj *model.Job) ([]*model.JobTag, error) {
+	query := sq.
+		Select("tag.id", "tag.tag_type", "tag.tag_name").
+		From("tag").
+		Join("jobtag ON jobtag.tag_id = tag.id").
+		Where("jobtag.job_id = ?", obj.ID)
+
+	rows, err := query.RunWith(r.DB).Query()
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	tags := make([]*model.JobTag, 0)
+	for rows.Next() {
+		var tag model.JobTag
+		if err := rows.Scan(&tag.ID, &tag.TagType, &tag.TagName); err != nil {
+			return nil, err
+		}
+		tags = append(tags, &tag)
+	}
+
+	return tags, nil
+}
+
+func (r *mutationResolver) CreateTag(ctx context.Context, typeArg string, name string) (*model.JobTag, error) {
+	res, err := r.DB.Exec("INSERT INTO tag (tag_type, tag_name) VALUES ($1, $2)", typeArg, name)
+	if err != nil {
+		return nil, err
+	}
+
+	id, err := res.LastInsertId()
+	if err != nil {
+		return nil, err
+	}
+
+	return &model.JobTag{ID: strconv.FormatInt(id, 10), TagType: typeArg, TagName: name}, nil
+}
+
+func (r *mutationResolver) DeleteTag(ctx context.Context, id string) (string, error) {
+	// The UI does not allow this currently anyways.
+	panic(fmt.Errorf("not implemented"))
+}
+
+func (r *mutationResolver) AddTagsToJob(ctx context.Context, job string, tagIds []string) ([]*model.JobTag, error) {
+	jid, err := strconv.Atoi(job)
+	if err != nil {
+		return nil, err
+	}
+
+	for _, tagId := range tagIds {
+		tid, err := strconv.Atoi(tagId)
+		if err != nil {
+			return nil, err
+		}
+
+		if _, err := r.DB.Exec("INSERT INTO jobtag (job_id, tag_id) VALUES ($1, $2)", jid, tid); err != nil {
+			return nil, err
+		}
+	}
+
+	tags, err := r.Job().Tags(ctx, &model.Job{ID: job})
+	if err != nil {
+		return nil, err
+	}
+
+	jobObj, err := r.Query().Job(ctx, job)
+	if err != nil {
+		return nil, err
+	}
+
+	return tags, metricdata.UpdateTags(jobObj, tags)
+}
+
+func (r *mutationResolver) RemoveTagsFromJob(ctx context.Context, job string, tagIds []string) ([]*model.JobTag, error) {
+	jid, err := strconv.Atoi(job)
+	if err != nil {
+		return nil, err
+	}
+
+	for _, tagId := range tagIds {
+		tid, err := strconv.Atoi(tagId)
+		if err != nil {
+			return nil, err
+		}
+
+		if _, err := r.DB.Exec("DELETE FROM jobtag WHERE jobtag.job_id = $1 AND jobtag.tag_id = $2", jid, tid); err != nil {
+			return nil, err
+		}
+	}
+
+	tags, err := r.Job().Tags(ctx, &model.Job{ID: job})
+	if err != nil {
+		return nil, err
+	}
+
+	jobObj, err := r.Query().Job(ctx, job)
+	if err != nil {
+		return nil, err
+	}
+
+	return tags, metricdata.UpdateTags(jobObj, tags)
+}
+
+func (r *mutationResolver) UpdateConfiguration(ctx context.Context, name string, value string) (*string, error) {
+	if err := config.UpdateConfig(name, value, ctx); err != nil {
+		return nil, err
+	}
+
+	return nil, nil
+}
+
+func (r *queryResolver) Clusters(ctx context.Context) ([]*model.Cluster, error) {
+	return r.ClusterConfigs, nil
+}
+
+func (r *queryResolver) Tags(ctx context.Context) ([]*model.JobTag, error) {
+	rows, err := sq.Select("id", "tag_type", "tag_name").From("tag").RunWith(r.DB).Query()
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	tags := make([]*model.JobTag, 0)
+	for rows.Next() {
+		var tag model.JobTag
+		if err := rows.Scan(&tag.ID, &tag.TagType, &tag.TagName); err != nil {
+			return nil, err
+		}
+		tags = append(tags, &tag)
+	}
+
+	return tags, nil
+}
+
+func (r *queryResolver) Job(ctx context.Context, id string) (*model.Job, error) {
+	return scanJob(sq.Select(jobTableCols...).From("job").Where("job.id = ?", id).RunWith(r.DB).QueryRow())
+}
+
+func (r *queryResolver) JobMetrics(ctx context.Context, id string, metrics []string) ([]*model.JobMetricWithName, error) {
+	job, err := r.Query().Job(ctx, id)
+	if err != nil {
+		return nil, err
+	}
+
+	data, err := metricdata.LoadData(job, metrics, ctx)
+	if err != nil {
+		return nil, err
+	}
+
+	res := []*model.JobMetricWithName{}
+	for name, md := range data {
+		res = append(res, &model.JobMetricWithName{
+			Name:   name,
+			Metric: md,
+		})
+	}
+
+	return res, err
+}
+
+func (r *queryResolver) JobsFootprints(ctx context.Context, filter []*model.JobFilter, metrics []string) ([]*model.MetricFootprints, error) {
+	return r.jobsFootprints(ctx, filter, metrics)
+}
+
+func (r *queryResolver) Jobs(ctx context.Context, filter []*model.JobFilter, page *model.PageRequest, order *model.OrderByInput) (*model.JobResultList, error) {
+	jobs, count, err := r.queryJobs(filter, page, order)
+	if err != nil {
+		return nil, err
+	}
+
+	return &model.JobResultList{Items: jobs, Count: &count}, nil
+}
+
+func (r *queryResolver) JobsStatistics(ctx context.Context, filter []*model.JobFilter, groupBy *model.Aggregate) ([]*model.JobsStatistics, error) {
+	return r.jobsStatistics(ctx, filter, groupBy)
+}
+
+func (r *queryResolver) RooflineHeatmap(ctx context.Context, filter []*model.JobFilter, rows int, cols int, minX float64, minY float64, maxX float64, maxY float64) ([][]float64, error) {
+	return r.rooflineHeatmap(ctx, filter, rows, cols, minX, minY, maxX, maxY)
+}
+
+// Job returns generated.JobResolver implementation.
+func (r *Resolver) Job() generated.JobResolver { return &jobResolver{r} }
+
+// Mutation returns generated.MutationResolver implementation.
+func (r *Resolver) Mutation() generated.MutationResolver { return &mutationResolver{r} }
+
+// Query returns generated.QueryResolver implementation.
+func (r *Resolver) Query() generated.QueryResolver { return &queryResolver{r} }
+
+type jobResolver struct{ *Resolver }
+type mutationResolver struct{ *Resolver }
+type queryResolver struct{ *Resolver }

graph/stats.go

@@ -0,0 +1,258 @@
+package graph
+
+import (
+	"context"
+	"database/sql"
+	"fmt"
+	"math"
+
+	"github.com/99designs/gqlgen/graphql"
+	"github.com/ClusterCockpit/cc-jobarchive/graph/model"
+	"github.com/ClusterCockpit/cc-jobarchive/metricdata"
+	"github.com/ClusterCockpit/cc-jobarchive/schema"
+	sq "github.com/Masterminds/squirrel"
+)
+
+// GraphQL validation should make sure that no unkown values can be specified.
+var groupBy2column = map[model.Aggregate]string{
+	model.AggregateUser:    "job.user_id",
+	model.AggregateProject: "job.project_id",
+	model.AggregateCluster: "job.cluster_id",
+}
+
+// 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.
+	for _, cluster := range r.ClusterConfigs {
+		corehoursCol := fmt.Sprintf("SUM(job.duration * job.num_nodes * %d * %d) / 3600", cluster.SocketsPerNode, cluster.CoresPerSocket)
+		var query sq.SelectBuilder
+		if groupBy == nil {
+			query = sq.Select(
+				"''",
+				"COUNT(job.id)",
+				"SUM(job.duration) / 3600",
+				corehoursCol,
+			).From("job").Where("job.cluster_id = ?", cluster.ClusterID)
+		} else {
+			col := groupBy2column[*groupBy]
+			query = sq.Select(
+				col,
+				"COUNT(job.id)",
+				"SUM(job.duration) / 3600",
+				corehoursCol,
+			).From("job").Where("job.cluster_id = ?", cluster.ClusterID).GroupBy(col)
+		}
+
+		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 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")
+		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]
+		rows, err := sq.Select(col, "COUNT(job.id)").From("job").Where("job.duration < 120").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
+			stat.HistWalltime, err = r.jobsStatisticsHistogram("ROUND(job.duration / 3600) as value", filter, id, col)
+			if err != nil {
+				return nil, err
+			}
+
+			stat.HistNumNodes, err = r.jobsStatisticsHistogram("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>".
+func (r *queryResolver) jobsStatisticsHistogram(value string, filters []*model.JobFilter, id, col string) ([]*model.HistoPoint, error) {
+	query := sq.Select(value, "COUNT(job.id) AS count").From("job")
+	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) {
+	jobs, count, err := r.queryJobs(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 {
+		jobdata, err := metricdata.LoadData(job, []string{"flops_any", "mem_bw"}, ctx)
+		if err != nil {
+			return nil, err
+		}
+
+		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 %s", job.ID)
+		}
+
+		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) {
+	jobs, count, err := r.queryJobs(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
+}

graph/users.go

@@ -1,13 +0,0 @@
-package graph
-
-import (
-	"context"
-	"errors"
-	"time"
-
-	"github.com/ClusterCockpit/cc-jobarchive/graph/model"
-)
-
-func (r *queryResolver) UserStats(ctx context.Context, from *time.Time, to *time.Time, clusterId *string) ([]*model.UserStats, error) {
-	return nil, errors.New("unimplemented")
-}

init-db.go

@@ -10,9 +10,12 @@ import (
 	"strings"
 	"time"
 
+	"github.com/ClusterCockpit/cc-jobarchive/schema"
 	"github.com/jmoiron/sqlx"
 )
 
+// Delete the tables "job", "tag" and "jobtag" from the database and
+// repopulate them using the jobs found in `archive`.
 func initDB(db *sqlx.DB, archive string) error {
 	starttime := time.Now()
 	fmt.Println("Building database...")
@@ -104,8 +107,10 @@ func initDB(db *sqlx.DB, archive string) error {
 					fmt.Printf("%d jobs inserted...\r", i)
 				}
 
-				if err = loadJob(tx, insertstmt, tags, filepath.Join(archive, entry0.Name(), entry1.Name(), entry2.Name())); err != nil {
+				filename := filepath.Join(archive, entry0.Name(), entry1.Name(), entry2.Name())
-					return err
+				if err = loadJob(tx, insertstmt, tags, filename); err != nil {
+					fmt.Printf("failed to load '%s': %s", filename, err.Error())
+					continue
 				}
 
 				i += 1
@@ -129,28 +134,8 @@ func initDB(db *sqlx.DB, archive string) error {
 	return nil
 }
 
-type JobMetaFile struct {
+// Read the `meta.json` file at `path` and insert it to the database using the prepared
-	JobId     string   `json:"job_id"`
+// insert statement `stmt`. `tags` maps all existing tags to their database ID.
-	UserId    string   `json:"user_id"`
-	ProjectId string   `json:"project_id"`
-	ClusterId string   `json:"cluster_id"`
-	NumNodes  int      `json:"num_nodes"`
-	JobState  string   `json:"job_state"`
-	StartTime int64    `json:"start_time"`
-	Duration  int64    `json:"duration"`
-	Nodes     []string `json:"nodes"`
-	Tags      []struct {
-		Name string `json:"name"`
-		Type string `json:"type"`
-	} `json:"tags"`
-	Statistics map[string]struct {
-		Unit string  `json:"unit"`
-		Avg  float64 `json:"avg"`
-		Min  float64 `json:"min"`
-		Max  float64 `json:"max"`
-	} `json:"statistics"`
-}
-
 func loadJob(tx *sql.Tx, stmt *sql.Stmt, tags map[string]int64, path string) error {
 	f, err := os.Open(filepath.Join(path, "meta.json"))
 	if err != nil {
@@ -158,7 +143,7 @@ func loadJob(tx *sql.Tx, stmt *sql.Stmt, tags map[string]int64, path string) err
 	}
 	defer f.Close()
 
-	var job JobMetaFile
+	var job schema.JobMeta
 	if err := json.NewDecoder(bufio.NewReader(f)).Decode(&job); err != nil {
 		return err
 	}
@@ -203,7 +188,7 @@ func loadJob(tx *sql.Tx, stmt *sql.Stmt, tags map[string]int64, path string) err
 	return nil
 }
 
-func loadJobStat(job *JobMetaFile, metric string) sql.NullFloat64 {
+func loadJobStat(job *schema.JobMeta, metric string) sql.NullFloat64 {
 	val := sql.NullFloat64{Valid: false}
 	if stats, ok := job.Statistics[metric]; ok {
 		val.Valid = true

metricdata/archive.go

@@ -0,0 +1,125 @@
+package metricdata
+
+import (
+	"bufio"
+	"encoding/json"
+	"fmt"
+	"os"
+	"path/filepath"
+	"strconv"
+	"strings"
+
+	"github.com/ClusterCockpit/cc-jobarchive/graph/model"
+	"github.com/ClusterCockpit/cc-jobarchive/schema"
+)
+
+var JobArchivePath string = "./var/job-archive"
+
+// For a given job, return the path of the `data.json`/`meta.json` file.
+// TODO: Implement Issue ClusterCockpit/ClusterCockpit#97
+func getPath(job *model.Job, file string) (string, error) {
+	id, err := strconv.Atoi(strings.Split(job.JobID, ".")[0])
+	if err != nil {
+		return "", err
+	}
+
+	lvl1, lvl2 := id/1000, id%1000
+	return filepath.Join(JobArchivePath, job.ClusterID, fmt.Sprintf("%d", lvl1), fmt.Sprintf("%03d", lvl2), file), nil
+}
+
+// Assuming job is completed/archived, return the jobs metric data.
+func loadFromArchive(job *model.Job) (schema.JobData, error) {
+	filename, err := getPath(job, "data.json")
+	if err != nil {
+		return nil, err
+	}
+
+	f, err := os.Open(filename)
+	if err != nil {
+		return nil, err
+	}
+	defer f.Close()
+
+	var data schema.JobData
+	if err := json.NewDecoder(bufio.NewReader(f)).Decode(&data); err != nil {
+		return nil, err
+	}
+
+	return data, nil
+}
+
+// If the job is archived, find its `meta.json` file and override the tags list
+// in that JSON file. If the job is not archived, nothing is done.
+func UpdateTags(job *model.Job, tags []*model.JobTag) error {
+	if job.State == model.JobStateRunning {
+		return nil
+	}
+
+	filename, err := getPath(job, "meta.json")
+	if err != nil {
+		return err
+	}
+
+	f, err := os.Open(filename)
+	if err != nil {
+		if os.IsNotExist(err) {
+			return nil
+		}
+		return err
+	}
+
+	var metaFile schema.JobMeta
+	if err := json.NewDecoder(f).Decode(&metaFile); err != nil {
+		return err
+	}
+	f.Close()
+
+	metaFile.Tags = make([]struct {
+		Name string "json:\"name\""
+		Type string "json:\"type\""
+	}, 0)
+	for _, tag := range tags {
+		metaFile.Tags = append(metaFile.Tags, struct {
+			Name string "json:\"name\""
+			Type string "json:\"type\""
+		}{
+			Name: tag.TagName,
+			Type: tag.TagType,
+		})
+	}
+
+	bytes, err := json.Marshal(metaFile)
+	if err != nil {
+		return err
+	}
+
+	return os.WriteFile(filename, bytes, 0644)
+}
+
+// Helper to metricdata.LoadAverages().
+func loadAveragesFromArchive(job *model.Job, metrics []string, data [][]schema.Float) error {
+	filename, err := getPath(job, "meta.json")
+	if err != nil {
+		return err
+	}
+
+	bytes, err := os.ReadFile(filename)
+	if err != nil {
+		return err
+	}
+
+	var metaFile schema.JobMeta
+	if err := json.Unmarshal(bytes, &metaFile); err != nil {
+		return err
+	}
+
+	for i, m := range metrics {
+		if stat, ok := metaFile.Statistics[m]; ok {
+			data[i] = append(data[i], schema.Float(stat.Avg))
+		} else {
+			data[i] = append(data[i], schema.NaN)
+		}
+	}
+
+	return nil
+}

metricdata/metricdata.go

@@ -0,0 +1,41 @@
+package metricdata
+
+import (
+	"context"
+	"errors"
+
+	"github.com/ClusterCockpit/cc-jobarchive/graph/model"
+	"github.com/ClusterCockpit/cc-jobarchive/schema"
+)
+
+// Fetches the metric data for a job.
+func LoadData(job *model.Job, metrics []string, ctx context.Context) (schema.JobData, error) {
+	if job.State != model.JobStateCompleted {
+		return nil, errors.New("only completed jobs are supported")
+	}
+
+	data, err := loadFromArchive(job)
+	if err != nil {
+		return nil, err
+	}
+
+	if metrics != nil {
+		res := schema.JobData{}
+		for _, metric := range metrics {
+			if metricdata, ok := data[metric]; ok {
+				res[metric] = metricdata
+			}
+		}
+		return res, nil
+	}
+	return data, nil
+}
+
+// Used for the jobsFootprint GraphQL-Query. TODO: Rename/Generalize.
+func LoadAverages(job *model.Job, metrics []string, data [][]schema.Float, ctx context.Context) error {
+	if job.State != model.JobStateCompleted {
+		return errors.New("only completed jobs are supported")
+	}
+
+	return loadAveragesFromArchive(job, metrics, data)
+}

server.go

@@ -1,15 +1,21 @@
 package main
 
 import (
+	"encoding/json"
 	"flag"
 	"log"
 	"net/http"
 	"os"
+	"path/filepath"
+	"time"
 
 	"github.com/99designs/gqlgen/graphql/handler"
 	"github.com/99designs/gqlgen/graphql/playground"
+	"github.com/ClusterCockpit/cc-jobarchive/config"
 	"github.com/ClusterCockpit/cc-jobarchive/graph"
 	"github.com/ClusterCockpit/cc-jobarchive/graph/generated"
+	"github.com/ClusterCockpit/cc-jobarchive/graph/model"
+	"github.com/ClusterCockpit/cc-jobarchive/metricdata"
 	"github.com/gorilla/handlers"
 	"github.com/gorilla/mux"
 	"github.com/jmoiron/sqlx"
@@ -22,7 +28,7 @@ func main() {
 
 	flag.StringVar(&port, "port", "8080", "Port on which to listen")
 	flag.StringVar(&staticFiles, "static-files", "./frontend/public", "Directory who's contents shall be served as static files")
-	flag.StringVar(&jobDBFile, "job-db", "./job.db", "SQLite 3 Jobs Database File")
+	flag.StringVar(&jobDBFile, "job-db", "./var/job.db", "SQLite 3 Jobs Database File")
 	flag.BoolVar(&reinitDB, "init-db", false, "Initialize new SQLite Database")
 	flag.Parse()
 
@@ -30,34 +36,67 @@ func main() {
 	if err != nil {
 		log.Fatal(err)
 	}
+
+	// See https://github.com/mattn/go-sqlite3/issues/274
+	db.SetMaxOpenConns(1)
 	defer db.Close()
 
 	if reinitDB {
-		if err = initDB(db, "./job-data"); err != nil {
+		if err = initDB(db, metricdata.JobArchivePath); err != nil {
 			log.Fatal(err)
 		}
+	}
 
-		if err = db.Close(); err != nil {
+	clusters, err := loadClusters()
-			log.Fatal(err)
+	if err != nil {
-		}
+		log.Fatal(err)
-
-		return
 	}
 
 	r := mux.NewRouter()
 	loggedRouter := handlers.LoggingHandler(os.Stdout, r)
 
-	srv := handler.NewDefaultServer(generated.NewExecutableSchema(generated.Config{Resolvers: &graph.Resolver{DB: db}}))
+	srv := handler.NewDefaultServer(generated.NewExecutableSchema(generated.Config{
+		Resolvers: &graph.Resolver{DB: db, ClusterConfigs: clusters}}))
 	r.HandleFunc("/graphql-playground", playground.Handler("GraphQL playground", "/query"))
 	r.Handle("/query", srv)
+	r.HandleFunc("/config.json", config.ServeConfig).Methods("GET")
 
 	if len(staticFiles) != 0 {
 		r.PathPrefix("/").Handler(http.FileServer(http.Dir(staticFiles)))
 	}
 
-	log.Printf("connect to http://localhost:%s/graphql-playground for GraphQL playground", port)
+	log.Printf("GraphQL playground: http://localhost:%s/graphql-playground", port)
+	log.Printf("Home:               http://localhost:%s/index.html", port)
 	log.Fatal(http.ListenAndServe("127.0.0.1:"+port,
 		handlers.CORS(handlers.AllowedHeaders([]string{"X-Requested-With", "Content-Type", "Authorization"}),
 			handlers.AllowedMethods([]string{"GET", "POST", "HEAD", "OPTIONS"}),
 			handlers.AllowedOrigins([]string{"*"}))(loggedRouter)))
 }
+
+func loadClusters() ([]*model.Cluster, error) {
+	entries, err := os.ReadDir(metricdata.JobArchivePath)
+	if err != nil {
+		return nil, err
+	}
+
+	clusters := []*model.Cluster{}
+	for _, de := range entries {
+		bytes, err := os.ReadFile(filepath.Join(metricdata.JobArchivePath, de.Name(), "cluster.json"))
+		if err != nil {
+			return nil, err
+		}
+
+		var cluster model.Cluster
+		if err := json.Unmarshal(bytes, &cluster); err != nil {
+			return nil, err
+		}
+
+		if cluster.FilterRanges.StartTime.To.IsZero() {
+			cluster.FilterRanges.StartTime.To = time.Unix(0, 0)
+		}
+
+		clusters = append(clusters, &cluster)
+	}
+
+	return clusters, nil
+}