Add async archiving option; Move REST-API to new package

README.md

@@ -12,7 +12,7 @@ git clone --recursive git@github.com:ClusterCockpit/cc-jobarchive.git
 cd ./cc-jobarchive/frontend
 yarn install
 export CCFRONTEND_ROLLUP_INTRO='
-const JOBVIEW_URL = job => `/monitoring/job/${job.jobId}`;
+const JOBVIEW_URL = job => `/monitoring/job/${job.id}`;
 const USERVIEW_URL = userId => `/monitoring/user/${userId}`;
 const TAG_URL = tag => `/monitoring/jobs/?tag=${tag.id}`;
 '
@@ -52,4 +52,3 @@ This project uses [gqlgen](https://github.com/99designs/gqlgen) for the GraphQL
 - [ ] Write more TODOs
 - [ ] Caching
 - [ ] Generate JWTs based on the provided keys
-

api/rest.go

@@ -0,0 +1,276 @@
+package api
+
+import (
+	"context"
+	"database/sql"
+	"encoding/json"
+	"fmt"
+	"log"
+	"net/http"
+	"strings"
+
+	"github.com/ClusterCockpit/cc-jobarchive/config"
+	"github.com/ClusterCockpit/cc-jobarchive/graph"
+	"github.com/ClusterCockpit/cc-jobarchive/graph/model"
+	"github.com/ClusterCockpit/cc-jobarchive/metricdata"
+	sq "github.com/Masterminds/squirrel"
+	"github.com/gorilla/mux"
+	"github.com/jmoiron/sqlx"
+)
+
+type RestApi struct {
+	DB             *sqlx.DB
+	Resolver       *graph.Resolver
+	AsyncArchiving bool
+}
+
+func (api *RestApi) MountRoutes(r *mux.Router) {
+	r.HandleFunc("/api/jobs/start_job/", api.startJob).Methods(http.MethodPost, http.MethodPut)
+	r.HandleFunc("/api/jobs/stop_job/", api.stopJob).Methods(http.MethodPost, http.MethodPut)
+	r.HandleFunc("/api/jobs/stop_job/{id}", api.stopJob).Methods(http.MethodPost, http.MethodPut)
+
+	r.HandleFunc("/api/jobs/{id}", api.getJob).Methods(http.MethodGet)
+	r.HandleFunc("/api/jobs/tag_job/{id}", api.tagJob).Methods(http.MethodPost, http.MethodPatch)
+}
+
+type StartJobApiRequest struct {
+	JobId     int64    `json:"jobId"`
+	UserId    string   `json:"userId"`
+	ClusterId string   `json:"clusterId"`
+	StartTime int64    `json:"startTime"`
+	MetaData  string   `json:"metaData"`
+	ProjectId string   `json:"projectId"`
+	Nodes     []string `json:"nodes"`
+	NodeList  string   `json:"nodeList"`
+}
+
+type StartJobApiRespone struct {
+	DBID int64 `json:"id"`
+}
+
+type StopJobApiRequest struct {
+	// JobId, ClusterId and StartTime are optional.
+	// They are only used if no database id was provided.
+	JobId     *string `json:"jobId"`
+	ClusterId *string `json:"clusterId"`
+	StartTime *int64  `json:"startTime"`
+
+	// Payload
+	StopTime int64 `json:"stopTime"`
+}
+
+type StopJobApiRespone struct {
+	DBID string `json:"id"`
+}
+
+type TagJobApiRequest []*struct {
+	Name string `json:"name"`
+	Type string `json:"type"`
+}
+
+func (api *RestApi) getJob(rw http.ResponseWriter, r *http.Request) {
+	id := mux.Vars(r)["id"]
+
+	job, err := api.Resolver.Query().Job(r.Context(), id)
+	if err != nil {
+		http.Error(rw, err.Error(), http.StatusNotFound)
+		return
+	}
+
+	job.Tags, err = api.Resolver.Job().Tags(r.Context(), job)
+	if err != nil {
+		http.Error(rw, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	rw.Header().Add("Content-Type", "application/json")
+	rw.WriteHeader(http.StatusOK)
+	json.NewEncoder(rw).Encode(job)
+}
+
+func (api *RestApi) tagJob(rw http.ResponseWriter, r *http.Request) {
+	id := mux.Vars(r)["id"]
+	job, err := api.Resolver.Query().Job(r.Context(), id)
+	if err != nil {
+		http.Error(rw, err.Error(), http.StatusNotFound)
+		return
+	}
+
+	job.Tags, err = api.Resolver.Job().Tags(r.Context(), job)
+	if err != nil {
+		http.Error(rw, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	var req TagJobApiRequest
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+		http.Error(rw, err.Error(), http.StatusBadRequest)
+		return
+	}
+
+	for _, tag := range req {
+		var tagId string
+		if err := sq.Select("id").From("tag").
+			Where("tag.tag_type = ?", tag.Type).Where("tag.tag_name = ?", tag.Name).
+			RunWith(api.DB).QueryRow().Scan(&tagId); err != nil {
+			http.Error(rw, fmt.Sprintf("the tag '%s:%s' does not exist", tag.Type, tag.Name), http.StatusNotFound)
+			return
+		}
+
+		if _, err := api.DB.Exec(`INSERT INTO jobtag (job_id, tag_id) VALUES (?, ?)`, job.ID, tagId); err != nil {
+			http.Error(rw, err.Error(), http.StatusInternalServerError)
+			return
+		}
+
+		job.Tags = append(job.Tags, &model.JobTag{
+			ID:      tagId,
+			TagType: tag.Type,
+			TagName: tag.Name,
+		})
+	}
+
+	rw.Header().Add("Content-Type", "application/json")
+	rw.WriteHeader(http.StatusOK)
+	json.NewEncoder(rw).Encode(job)
+}
+
+func (api *RestApi) startJob(rw http.ResponseWriter, r *http.Request) {
+	req := StartJobApiRequest{}
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+		http.Error(rw, err.Error(), http.StatusBadRequest)
+		return
+	}
+
+	if config.GetClusterConfig(req.ClusterId) == nil {
+		http.Error(rw, fmt.Sprintf("cluster '%s' does not exist", req.ClusterId), http.StatusBadRequest)
+		return
+	}
+
+	if req.Nodes == nil {
+		req.Nodes = strings.Split(req.NodeList, "|")
+		if len(req.Nodes) == 1 {
+			req.Nodes = strings.Split(req.NodeList, ",")
+		}
+	}
+	if len(req.Nodes) == 0 || len(req.Nodes[0]) == 0 || len(req.UserId) == 0 {
+		http.Error(rw, "required fields are missing", http.StatusBadRequest)
+		return
+	}
+
+	// Check if combination of (job_id, cluster_id, start_time) already exists:
+	rows, err := api.DB.Query(`SELECT job.id FROM job WHERE job.job_id = ? AND job.cluster_id = ? AND job.start_time = ?`,
+		req.JobId, req.ClusterId, req.StartTime)
+	if err != nil {
+		http.Error(rw, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	if rows.Next() {
+		var id int64 = -1
+		rows.Scan(&id)
+		http.Error(rw, fmt.Sprintf("a job with that job_id, cluster_id and start_time already exists (database id: %d)", id), http.StatusUnprocessableEntity)
+		return
+	}
+
+	res, err := api.DB.Exec(
+		`INSERT INTO job (job_id, user_id, project_id, cluster_id, start_time, duration, job_state, num_nodes, node_list, metadata) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?);`,
+		req.JobId, req.UserId, req.ProjectId, req.ClusterId, req.StartTime, 0, model.JobStateRunning, len(req.Nodes), strings.Join(req.Nodes, ","), req.MetaData)
+	if err != nil {
+		http.Error(rw, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	id, err := res.LastInsertId()
+	if err != nil {
+		http.Error(rw, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	log.Printf("new job (id: %d): clusterId=%s, jobId=%d, userId=%s, startTime=%d, nodes=%v\n", id, req.ClusterId, req.JobId, req.UserId, req.StartTime, req.Nodes)
+	rw.Header().Add("Content-Type", "application/json")
+	rw.WriteHeader(http.StatusCreated)
+	json.NewEncoder(rw).Encode(StartJobApiRespone{
+		DBID: id,
+	})
+}
+
+func (api *RestApi) stopJob(rw http.ResponseWriter, r *http.Request) {
+	req := StopJobApiRequest{}
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+		http.Error(rw, err.Error(), http.StatusBadRequest)
+		return
+	}
+
+	var err error
+	var job *model.Job
+	id, ok := mux.Vars(r)["id"]
+	if ok {
+		job, err = graph.ScanJob(sq.Select(graph.JobTableCols...).From("job").Where("job.id = ?", id).RunWith(api.DB).QueryRow())
+	} else {
+		job, err = graph.ScanJob(sq.Select(graph.JobTableCols...).From("job").
+			Where("job.job_id = ?", req.JobId).
+			Where("job.cluster_id = ?", req.ClusterId).
+			Where("job.start_time = ?", req.StartTime).
+			RunWith(api.DB).QueryRow())
+	}
+	if err != nil {
+		http.Error(rw, err.Error(), http.StatusNotFound)
+		return
+	}
+
+	if job == nil || job.StartTime.Unix() >= req.StopTime || job.State != model.JobStateRunning {
+		http.Error(rw, "stop_time must be larger than start_time and only running jobs can be stopped", http.StatusBadRequest)
+		return
+	}
+
+	doArchiving := func(job *model.Job, ctx context.Context) error {
+		job.Duration = int(req.StopTime - job.StartTime.Unix())
+		jobMeta, err := metricdata.ArchiveJob(job, ctx)
+		if err != nil {
+			log.Printf("archiving job (id: %s) failed: %s\n", job.ID, err.Error())
+			return err
+		}
+
+		getAvg := func(metric string) sql.NullFloat64 {
+			stats, ok := jobMeta.Statistics[metric]
+			if !ok {
+				return sql.NullFloat64{Valid: false}
+			}
+			return sql.NullFloat64{Valid: true, Float64: stats.Avg}
+		}
+
+		if _, err := api.DB.Exec(
+			`UPDATE job SET
+			job_state = ?, duration = ?,
+			flops_any_avg = ?, mem_bw_avg = ?, net_bw_avg = ?, file_bw_avg = ?, load_avg = ?
+			WHERE job.id = ?`,
+			model.JobStateCompleted, job.Duration,
+			getAvg("flops_any"), getAvg("mem_bw"), getAvg("net_bw"), getAvg("file_bw"), getAvg("load"),
+			job.ID); err != nil {
+			log.Printf("archiving job (id: %s) failed: %s\n", job.ID, err.Error())
+			return err
+		}
+
+		log.Printf("job stopped and archived (id: %s)\n", job.ID)
+		return nil
+	}
+
+	log.Printf("archiving job... (id: %s): clusterId=%s, jobId=%s, userId=%s, startTime=%s, nodes=%v\n", job.ID, job.ClusterID, job.JobID, job.UserID, job.StartTime, job.Nodes)
+	if api.AsyncArchiving {
+		rw.Header().Add("Content-Type", "application/json")
+		rw.WriteHeader(http.StatusOK)
+		json.NewEncoder(rw).Encode(StopJobApiRespone{
+			DBID: job.ID,
+		})
+		go doArchiving(job, context.Background())
+	} else {
+		err := doArchiving(job, r.Context())
+		if err != nil {
+			http.Error(rw, err.Error(), http.StatusInternalServerError)
+		} else {
+			rw.Header().Add("Content-Type", "application/json")
+			rw.WriteHeader(http.StatusOK)
+			json.NewEncoder(rw).Encode(job)
+		}
+	}
+}

metricdata/archive.go

@@ -137,9 +137,9 @@ func loadAveragesFromArchive(job *model.Job, metrics []string, data [][]schema.F
 }
 
 // Writes a running job to the job-archive
-func ArchiveJob(job *model.Job, ctx context.Context) error {
+func ArchiveJob(job *model.Job, ctx context.Context) (*schema.JobMeta, error) {
 	if job.State != model.JobStateRunning {
-		return errors.New("cannot archive job that is not running")
+		return nil, errors.New("cannot archive job that is not running")
 	}
 
 	allMetrics := make([]string, 0)
@@ -149,7 +149,7 @@ func ArchiveJob(job *model.Job, ctx context.Context) error {
 	}
 	jobData, err := LoadData(job, allMetrics, ctx)
 	if err != nil {
-		return err
+		return nil, err
 	}
 
 	tags := []struct {
@@ -195,39 +195,46 @@ func ArchiveJob(job *model.Job, ctx context.Context) error {
 		}
 	}
 
+	// If the file based archive is disabled,
+	// only return the JobMeta structure as the
+	// statistics in there are needed.
+	if !useArchive {
+		return metaData, nil
+	}
+
 	dirPath, err := getPath(job, "", false)
 	if err != nil {
-		return err
+		return nil, err
 	}
 
 	if err := os.MkdirAll(dirPath, 0777); err != nil {
-		return err
+		return nil, err
 	}
 
 	f, err := os.Create(path.Join(dirPath, "meta.json"))
 	if err != nil {
-		return err
+		return nil, err
 	}
 	defer f.Close()
 	writer := bufio.NewWriter(f)
 	if err := json.NewEncoder(writer).Encode(metaData); err != nil {
-		return err
+		return nil, err
 	}
 	if err := writer.Flush(); err != nil {
-		return err
+		return nil, err
 	}
 
 	f, err = os.Create(path.Join(dirPath, "data.json"))
 	if err != nil {
-		return err
+		return nil, err
 	}
 	writer = bufio.NewWriter(f)
 	if err := json.NewEncoder(writer).Encode(jobData); err != nil {
-		return err
+		return nil, err
 	}
 	if err := writer.Flush(); err != nil {
-		return err
+		return nil, err
 	}
 
-	return f.Close()
+	return metaData, f.Close()
 }

metricdata/metricdata.go

@@ -28,7 +28,10 @@ var metricDataRepos map[string]MetricDataRepository = map[string]MetricDataRepos
 
 var JobArchivePath string
 
-func Init(jobArchivePath string) error {
+var useArchive bool
+
+func Init(jobArchivePath string, disableArchive bool) error {
+	useArchive = !disableArchive
 	JobArchivePath = jobArchivePath
 	for _, cluster := range config.Clusters {
 		if cluster.MetricDataRepository != nil {
@@ -55,7 +58,7 @@ func Init(jobArchivePath string) error {
 
 // Fetches the metric data for a job.
 func LoadData(job *model.Job, metrics []string, ctx context.Context) (schema.JobData, error) {
-	if job.State == model.JobStateRunning {
+	if job.State == model.JobStateRunning || !useArchive {
 		repo, ok := metricDataRepos[job.ClusterID]
 		if !ok {
 			return nil, fmt.Errorf("no metric data repository configured for '%s'", job.ClusterID)
@@ -83,7 +86,7 @@ func LoadData(job *model.Job, metrics []string, ctx context.Context) (schema.Job
 
 // 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.JobStateRunning {
+	if job.State != model.JobStateRunning && useArchive {
 		return loadAveragesFromArchive(job, metrics, data)
 	}
 
@@ -120,6 +123,12 @@ func LoadNodeData(clusterId string, metrics, nodes []string, from, to int64, ctx
 		return nil, fmt.Errorf("no metric data repository configured for '%s'", clusterId)
 	}
 
+	if metrics == nil {
+		for _, m := range config.GetClusterConfig(clusterId).MetricConfig {
+			metrics = append(metrics, m.Name)
+		}
+	}
+
 	data, err := repo.LoadNodeData(clusterId, metrics, nodes, from, to, ctx)
 	if err != nil {
 		return nil, err

rest-api.go

@@ -1,142 +0,0 @@
-package main
-
-import (
-	"encoding/json"
-	"fmt"
-	"log"
-	"net/http"
-	"strings"
-
-	"github.com/ClusterCockpit/cc-jobarchive/config"
-	"github.com/ClusterCockpit/cc-jobarchive/graph"
-	"github.com/ClusterCockpit/cc-jobarchive/graph/model"
-	"github.com/ClusterCockpit/cc-jobarchive/metricdata"
-	sq "github.com/Masterminds/squirrel"
-	"github.com/gorilla/mux"
-)
-
-type StartJobApiRequest struct {
-	JobId     int64    `json:"jobId"`
-	UserId    string   `json:"userId"`
-	ClusterId string   `json:"clusterId"`
-	StartTime int64    `json:"startTime"`
-	MetaData  string   `json:"metaData"`
-	ProjectId string   `json:"projectId"`
-	Nodes     []string `json:"nodes"`
-	NodeList  string   `json:"nodeList"`
-}
-
-type StartJobApiRespone struct {
-	DBID int64 `json:"id"`
-}
-
-type StopJobApiRequest struct {
-	// JobId, ClusterId and StartTime are optional.
-	// They are only used if no database id was provided.
-	JobId     *string `json:"jobId"`
-	ClusterId *string `json:"clusterId"`
-	StartTime *int64  `json:"startTime"`
-
-	StopTime int64 `json:"stopTime"`
-}
-
-type StopJobApiRespone struct {
-	DBID string `json:"id"`
-}
-
-func startJob(rw http.ResponseWriter, r *http.Request) {
-	req := StartJobApiRequest{}
-	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
-		http.Error(rw, err.Error(), http.StatusBadRequest)
-		return
-	}
-
-	if config.GetClusterConfig(req.ClusterId) == nil {
-		http.Error(rw, fmt.Sprintf("cluster '%s' does not exist", req.ClusterId), http.StatusBadRequest)
-		return
-	}
-
-	if req.Nodes == nil {
-		req.Nodes = strings.Split(req.NodeList, "|")
-		if len(req.Nodes) == 1 {
-			req.Nodes = strings.Split(req.NodeList, ",")
-		}
-	}
-	if len(req.Nodes) == 0 || len(req.Nodes[0]) == 0 || len(req.UserId) == 0 {
-		http.Error(rw, "required fields are missing", http.StatusBadRequest)
-		return
-	}
-
-	res, err := db.Exec(
-		`INSERT INTO job (job_id, user_id, project_id, cluster_id, start_time, duration, job_state, num_nodes, node_list, metadata) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?);`,
-		req.JobId, req.UserId, req.ProjectId, req.ClusterId, req.StartTime, 0, model.JobStateRunning, len(req.Nodes), strings.Join(req.Nodes, ","), req.MetaData)
-	if err != nil {
-		http.Error(rw, err.Error(), http.StatusInternalServerError)
-		return
-	}
-
-	id, err := res.LastInsertId()
-	if err != nil {
-		http.Error(rw, err.Error(), http.StatusInternalServerError)
-		return
-	}
-
-	log.Printf("new job (id: %d): clusterId=%s, jobId=%d, userId=%s, startTime=%d, nodes=%v\n", id, req.ClusterId, req.JobId, req.UserId, req.StartTime, req.Nodes)
-	rw.Header().Add("Content-Type", "application/json")
-	rw.WriteHeader(http.StatusCreated)
-	json.NewEncoder(rw).Encode(StartJobApiRespone{
-		DBID: id,
-	})
-}
-
-func stopJob(rw http.ResponseWriter, r *http.Request) {
-	req := StopJobApiRequest{}
-	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
-		http.Error(rw, err.Error(), http.StatusBadRequest)
-		return
-	}
-
-	var err error
-	var job *model.Job
-	id, ok := mux.Vars(r)["id"]
-	if ok {
-		job, err = graph.ScanJob(sq.Select(graph.JobTableCols...).From("job").Where("job.id = ?", id).RunWith(db).QueryRow())
-	} else {
-		job, err = graph.ScanJob(sq.Select(graph.JobTableCols...).From("job").
-			Where("job.job_id = ?", req.JobId).
-			Where("job.cluster_id = ?", req.ClusterId).
-			Where("job.start_time = ?", req.StartTime).
-			RunWith(db).QueryRow())
-	}
-	if err != nil {
-		http.Error(rw, err.Error(), http.StatusBadRequest)
-		return
-	}
-
-	if job == nil || job.StartTime.Unix() >= req.StopTime || job.State != model.JobStateRunning {
-		http.Error(rw, "stop_time must be larger than start_time and only running jobs can be stopped", http.StatusBadRequest)
-		return
-	}
-
-	job.Duration = int(req.StopTime - job.StartTime.Unix())
-
-	if err := metricdata.ArchiveJob(job, r.Context()); err != nil {
-		log.Printf("archiving job (id: %s) failed: %s\n", job.ID, err.Error())
-		http.Error(rw, err.Error(), http.StatusInternalServerError)
-		return
-	}
-
-	if _, err := db.Exec(
-		`UPDATE job SET job_state = ?, duration = ? WHERE job.id = ?`,
-		model.JobStateCompleted, job.Duration, job.ID); err != nil {
-		http.Error(rw, err.Error(), http.StatusInternalServerError)
-		return
-	}
-
-	log.Printf("job stoped and archived (id: %s): clusterId=%s, jobId=%s, userId=%s, startTime=%s, nodes=%v\n", job.ID, job.ClusterID, job.JobID, job.UserID, job.StartTime, job.Nodes)
-	rw.Header().Add("Content-Type", "application/json")
-	rw.WriteHeader(http.StatusCreated)
-	json.NewEncoder(rw).Encode(StopJobApiRespone{
-		DBID: job.ID,
-	})
-}

server.go

@@ -10,6 +10,7 @@ import (
 
 	"github.com/99designs/gqlgen/graphql/handler"
 	"github.com/99designs/gqlgen/graphql/playground"
+	"github.com/ClusterCockpit/cc-jobarchive/api"
 	"github.com/ClusterCockpit/cc-jobarchive/auth"
 	"github.com/ClusterCockpit/cc-jobarchive/config"
 	"github.com/ClusterCockpit/cc-jobarchive/graph"
@@ -24,15 +25,39 @@ import (
 
 var db *sqlx.DB
 
+// Format of the configurartion (file). See below for the defaults.
 type ProgramConfig struct {
+	// Address where the http (or https) server will listen on (for example: 'localhost:80').
 	Addr string `json:"addr"`
+
+	// Disable authentication (for everything: API, Web-UI, ...)
 	DisableAuthentication bool `json:"disable-authentication"`
+
+	// Folder where static assets can be found, will be served directly
 	StaticFiles string `json:"static-files"`
+
+	// Currently only SQLite3 ist supported, so this should be a filename
 	DB string `json:"db"`
+
+	// Path to the job-archive
 	JobArchive string `json:"job-archive"`
+
+	// Make the /api/jobs/stop_job endpoint do the heavy work in the background.
+	AsyncArchiving bool `json:"async-archive"`
+
+	// Keep all metric data in the metric data repositories,
+	// do not write to the job-archive.
+	DisableArchive bool `json:"disable-archive"`
+
+	// For LDAP Authentication and user syncronisation.
 	LdapConfig *auth.LdapConfig `json:"ldap"`
+
+	// If both those options are not empty, use HTTPS using those certificates.
 	HttpsCertFile string `json:"https-cert-file"`
 	HttpsKeyFile  string `json:"https-key-file"`
+
+	// If overwriten, at least all the options in the defaults below must
+	// be provided! Most options here can be overwritten by the user.
 	UiDefaults map[string]interface{} `json:"ui-defaults"`
 }
 
@@ -42,6 +67,8 @@ var programConfig ProgramConfig = ProgramConfig{
 	StaticFiles:           "./frontend/public",
 	DB:                    "./var/job.db",
 	JobArchive:            "./var/job-archive",
+	AsyncArchiving:        true,
+	DisableArchive:        false,
 	LdapConfig: &auth.LdapConfig{
 		Url:        "ldap://localhost",
 		UserBase:   "ou=hpc,dc=rrze,dc=uni-erlangen,dc=de",
@@ -92,11 +119,15 @@ func main() {
 	}
 
 	var err error
-	db, err = sqlx.Open("sqlite3", programConfig.DB)
+	// This might need to change for other databases:
+	db, err = sqlx.Open("sqlite3", fmt.Sprintf("%s?_foreign_keys=on", programConfig.DB))
 	if err != nil {
 		log.Fatal(err)
 	}
 
+	// Only for sqlite, not needed for any other database:
+	db.SetMaxOpenConns(1)
+
 	// Initialize sub-modules...
 
 	if !programConfig.DisableAuthentication {
@@ -126,7 +157,7 @@ func main() {
 		log.Fatal(err)
 	}
 
-	if err := metricdata.Init(programConfig.JobArchive); err != nil {
+	if err := metricdata.Init(programConfig.JobArchive, programConfig.DisableArchive); err != nil {
 		log.Fatal(err)
 	}
 
@@ -145,6 +176,11 @@ func main() {
 	resolver := &graph.Resolver{DB: db}
 	graphQLEndpoint := handler.NewDefaultServer(generated.NewExecutableSchema(generated.Config{Resolvers: resolver}))
 	graphQLPlayground := playground.Handler("GraphQL playground", "/query")
+	restApi := &api.RestApi{
+		DB:             db,
+		Resolver:       resolver,
+		AsyncArchiving: programConfig.AsyncArchiving,
+	}
 
 	handleGetLogin := func(rw http.ResponseWriter, r *http.Request) {
 		templates.Render(rw, r, "login", &templates.Page{
@@ -170,9 +206,7 @@ func main() {
 		secured.Use(auth.Auth)
 	}
 	secured.Handle("/query", graphQLEndpoint)
-	secured.HandleFunc("/api/jobs/start_job/", startJob).Methods(http.MethodPost)
+
-	secured.HandleFunc("/api/jobs/stop_job/", stopJob).Methods(http.MethodPost, http.MethodPut)
-	secured.HandleFunc("/api/jobs/stop_job/{id:[0-9]+}", stopJob).Methods(http.MethodPost, http.MethodPut)
 	secured.HandleFunc("/config.json", config.ServeConfig).Methods(http.MethodGet)
 
 	secured.HandleFunc("/", func(rw http.ResponseWriter, r *http.Request) {
@@ -201,12 +235,13 @@ func main() {
 	})
 
 	monitoringRoutes(secured, resolver)
+	restApi.MountRoutes(secured)
 
 	r.PathPrefix("/").Handler(http.FileServer(http.Dir(programConfig.StaticFiles)))
 	handler := handlers.CORS(
 		handlers.AllowedHeaders([]string{"X-Requested-With", "Content-Type", "Authorization"}),
 		handlers.AllowedMethods([]string{"GET", "POST", "HEAD", "OPTIONS"}),
-		handlers.AllowedOrigins([]string{"*"}))(handlers.LoggingHandler(os.Stdout, r))
+		handlers.AllowedOrigins([]string{"*"}))(handlers.LoggingHandler(os.Stdout, handlers.CompressHandler(r)))
 
 	// Start http or https server
 	if programConfig.HttpsCertFile != "" && programConfig.HttpsKeyFile != "" {