mirror of
https://github.com/ClusterCockpit/cc-backend
synced 2024-09-20 11:27:26 +02:00
440 lines
13 KiB
Go
440 lines
13 KiB
Go
package api
|
|
|
|
import (
|
|
"bufio"
|
|
"context"
|
|
"database/sql"
|
|
"encoding/json"
|
|
"errors"
|
|
"fmt"
|
|
"io"
|
|
"net/http"
|
|
"os"
|
|
"path/filepath"
|
|
"strconv"
|
|
"sync"
|
|
|
|
"github.com/ClusterCockpit/cc-backend/auth"
|
|
"github.com/ClusterCockpit/cc-backend/config"
|
|
"github.com/ClusterCockpit/cc-backend/graph"
|
|
"github.com/ClusterCockpit/cc-backend/graph/model"
|
|
"github.com/ClusterCockpit/cc-backend/log"
|
|
"github.com/ClusterCockpit/cc-backend/metricdata"
|
|
"github.com/ClusterCockpit/cc-backend/repository"
|
|
"github.com/ClusterCockpit/cc-backend/schema"
|
|
"github.com/gorilla/mux"
|
|
)
|
|
|
|
type RestApi struct {
|
|
JobRepository *repository.JobRepository
|
|
Resolver *graph.Resolver
|
|
MachineStateDir string
|
|
OngoingArchivings sync.WaitGroup
|
|
}
|
|
|
|
func (api *RestApi) MountRoutes(r *mux.Router) {
|
|
r = r.PathPrefix("/api").Subrouter()
|
|
r.StrictSlash(true)
|
|
|
|
r.HandleFunc("/jobs/start_job/", api.startJob).Methods(http.MethodPost, http.MethodPut)
|
|
r.HandleFunc("/jobs/stop_job/", api.stopJob).Methods(http.MethodPost, http.MethodPut)
|
|
r.HandleFunc("/jobs/stop_job/{id}", api.stopJob).Methods(http.MethodPost, http.MethodPut)
|
|
|
|
r.HandleFunc("/jobs/", api.getJobs).Methods(http.MethodGet)
|
|
r.HandleFunc("/jobs/{id}", api.getJob).Methods(http.MethodGet)
|
|
r.HandleFunc("/jobs/tag_job/{id}", api.tagJob).Methods(http.MethodPost, http.MethodPatch)
|
|
|
|
r.HandleFunc("/jobs/metrics/{id}", api.getJobMetrics).Methods(http.MethodGet)
|
|
|
|
if api.MachineStateDir != "" {
|
|
r.HandleFunc("/machine_state/{cluster}/{host}", api.getMachineState).Methods(http.MethodGet)
|
|
r.HandleFunc("/machine_state/{cluster}/{host}", api.putMachineState).Methods(http.MethodPut, http.MethodPost)
|
|
}
|
|
}
|
|
|
|
type StartJobApiResponse 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 *int64 `json:"jobId"`
|
|
Cluster *string `json:"cluster"`
|
|
StartTime *int64 `json:"startTime"`
|
|
|
|
// Payload
|
|
StopTime int64 `json:"stopTime"`
|
|
State schema.JobState `json:"jobState"`
|
|
}
|
|
|
|
type ErrorResponse struct {
|
|
Status string `json:"status"`
|
|
Error string `json:"error"`
|
|
}
|
|
|
|
func handleError(err error, statusCode int, rw http.ResponseWriter) {
|
|
log.Printf("REST API error: %s", err.Error())
|
|
rw.Header().Add("Content-Type", "application/json")
|
|
rw.WriteHeader(statusCode)
|
|
json.NewEncoder(rw).Encode(ErrorResponse{
|
|
Status: http.StatusText(statusCode),
|
|
Error: err.Error(),
|
|
})
|
|
}
|
|
|
|
type TagJobApiRequest []*struct {
|
|
Name string `json:"name"`
|
|
Type string `json:"type"`
|
|
}
|
|
|
|
// Return a list of jobs
|
|
func (api *RestApi) getJobs(rw http.ResponseWriter, r *http.Request) {
|
|
filter := model.JobFilter{}
|
|
for key, vals := range r.URL.Query() {
|
|
switch key {
|
|
case "state":
|
|
for _, s := range vals {
|
|
state := schema.JobState(s)
|
|
if !state.Valid() {
|
|
http.Error(rw, "invalid query parameter value: state", http.StatusBadRequest)
|
|
return
|
|
}
|
|
filter.State = append(filter.State, state)
|
|
}
|
|
case "cluster":
|
|
filter.Cluster = &model.StringInput{Eq: &vals[0]}
|
|
default:
|
|
http.Error(rw, "invalid query parameter: "+key, http.StatusBadRequest)
|
|
return
|
|
}
|
|
}
|
|
|
|
results, err := api.Resolver.Query().Jobs(r.Context(), []*model.JobFilter{&filter}, nil, nil)
|
|
if err != nil {
|
|
http.Error(rw, err.Error(), http.StatusInternalServerError)
|
|
return
|
|
}
|
|
|
|
bw := bufio.NewWriter(rw)
|
|
defer bw.Flush()
|
|
|
|
if err := json.NewEncoder(bw).Encode(results.Items); err != nil {
|
|
http.Error(rw, err.Error(), http.StatusInternalServerError)
|
|
return
|
|
}
|
|
}
|
|
|
|
// Return a single job
|
|
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)
|
|
}
|
|
|
|
// Add a tag to a 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 {
|
|
tagId, err := api.JobRepository.AddTagOrCreate(job.ID, tag.Type, tag.Name)
|
|
if err != nil {
|
|
http.Error(rw, err.Error(), http.StatusInternalServerError)
|
|
return
|
|
}
|
|
|
|
job.Tags = append(job.Tags, &schema.Tag{
|
|
ID: tagId,
|
|
Type: tag.Type,
|
|
Name: tag.Name,
|
|
})
|
|
}
|
|
|
|
rw.Header().Add("Content-Type", "application/json")
|
|
rw.WriteHeader(http.StatusOK)
|
|
json.NewEncoder(rw).Encode(job)
|
|
}
|
|
|
|
// A new job started. The body should be in the `meta.json` format, but some fields required
|
|
// there are optional here (e.g. `jobState` defaults to "running").
|
|
func (api *RestApi) startJob(rw http.ResponseWriter, r *http.Request) {
|
|
if user := auth.GetUser(r.Context()); user != nil && !user.HasRole(auth.RoleApi) {
|
|
handleError(fmt.Errorf("missing role: %#v", auth.RoleApi), http.StatusForbidden, rw)
|
|
return
|
|
}
|
|
|
|
req := schema.JobMeta{BaseJob: schema.JobDefaults}
|
|
if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
|
|
handleError(fmt.Errorf("parsing request body failed: %w", err), http.StatusBadRequest, rw)
|
|
return
|
|
}
|
|
|
|
if config.GetClusterConfig(req.Cluster) == nil || config.GetPartition(req.Cluster, req.Partition) == nil {
|
|
handleError(fmt.Errorf("cluster or partition does not exist: %#v/%#v", req.Cluster, req.Partition), http.StatusBadRequest, rw)
|
|
return
|
|
}
|
|
|
|
// TODO: Do more such checks, be smarter with them.
|
|
if len(req.Resources) == 0 || len(req.User) == 0 || req.NumNodes == 0 {
|
|
handleError(errors.New("the fields 'resources', 'user' and 'numNodes' are required"), http.StatusBadRequest, rw)
|
|
return
|
|
}
|
|
|
|
// Check if combination of (job_id, cluster_id, start_time) already exists:
|
|
job, err := api.JobRepository.Find(req.JobID, req.Cluster, req.StartTime)
|
|
if err != nil && err != sql.ErrNoRows {
|
|
handleError(fmt.Errorf("checking for duplicate failed: %w", err), http.StatusInternalServerError, rw)
|
|
return
|
|
}
|
|
|
|
if err != sql.ErrNoRows {
|
|
handleError(fmt.Errorf("a job with that jobId, cluster and startTime already exists: dbid: %d", job.ID), http.StatusUnprocessableEntity, rw)
|
|
return
|
|
}
|
|
|
|
if req.State == "" {
|
|
req.State = schema.JobStateRunning
|
|
}
|
|
|
|
req.RawResources, err = json.Marshal(req.Resources)
|
|
if err != nil {
|
|
handleError(fmt.Errorf("basically impossible: %w", err), http.StatusBadRequest, rw)
|
|
return
|
|
}
|
|
|
|
id, err := api.JobRepository.Start(&req)
|
|
if err != nil {
|
|
handleError(fmt.Errorf("insert into database failed: %w", err), http.StatusInternalServerError, rw)
|
|
return
|
|
}
|
|
|
|
for _, tag := range req.Tags {
|
|
if _, err := api.JobRepository.AddTagOrCreate(id, tag.Type, tag.Name); err != nil {
|
|
http.Error(rw, err.Error(), http.StatusInternalServerError)
|
|
handleError(fmt.Errorf("adding tag to new job %d failed: %w", id, err), http.StatusInternalServerError, rw)
|
|
return
|
|
}
|
|
}
|
|
|
|
log.Printf("new job (id: %d): cluster=%s, jobId=%d, user=%s, startTime=%d", id, req.Cluster, req.JobID, req.User, req.StartTime)
|
|
rw.Header().Add("Content-Type", "application/json")
|
|
rw.WriteHeader(http.StatusCreated)
|
|
json.NewEncoder(rw).Encode(StartJobApiResponse{
|
|
DBID: id,
|
|
})
|
|
}
|
|
|
|
// A job has stopped and should be archived.
|
|
func (api *RestApi) stopJob(rw http.ResponseWriter, r *http.Request) {
|
|
if user := auth.GetUser(r.Context()); user != nil && !user.HasRole(auth.RoleApi) {
|
|
handleError(fmt.Errorf("missing role: %#v", auth.RoleApi), http.StatusForbidden, rw)
|
|
return
|
|
}
|
|
|
|
// Parse request body
|
|
req := StopJobApiRequest{}
|
|
if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
|
|
handleError(fmt.Errorf("parsing request body failed: %w", err), http.StatusBadRequest, rw)
|
|
return
|
|
}
|
|
|
|
// Fetch job (that will be stopped) from db
|
|
id, ok := mux.Vars(r)["id"]
|
|
var job *schema.Job
|
|
var err error
|
|
if ok {
|
|
id, e := strconv.ParseInt(id, 10, 64)
|
|
if e != nil {
|
|
handleError(fmt.Errorf("integer expected in path for id: %w", e), http.StatusBadRequest, rw)
|
|
return
|
|
}
|
|
|
|
job, err = api.JobRepository.FindById(id)
|
|
} else {
|
|
if req.JobId == nil || req.Cluster == nil || req.StartTime == nil {
|
|
handleError(errors.New("the fields 'jobId', 'cluster' and 'startTime' are required"), http.StatusBadRequest, rw)
|
|
return
|
|
}
|
|
|
|
job, err = api.JobRepository.Find(*req.JobId, *req.Cluster, *req.StartTime)
|
|
}
|
|
if err != nil {
|
|
handleError(fmt.Errorf("finding job failed: %w", err), http.StatusUnprocessableEntity, rw)
|
|
return
|
|
}
|
|
|
|
// Sanity checks
|
|
if job == nil || job.StartTime.Unix() >= req.StopTime || job.State != schema.JobStateRunning {
|
|
handleError(errors.New("stopTime must be larger than startTime and only running jobs can be stopped"), http.StatusBadRequest, rw)
|
|
return
|
|
}
|
|
if req.State != "" && !req.State.Valid() {
|
|
handleError(fmt.Errorf("invalid job state: %#v", req.State), http.StatusBadRequest, rw)
|
|
return
|
|
} else {
|
|
req.State = schema.JobStateCompleted
|
|
}
|
|
|
|
// Mark job as stopped in the database (update state and duration)
|
|
job.Duration = int32(req.StopTime - job.StartTime.Unix())
|
|
job.State = req.State
|
|
if err := api.JobRepository.Stop(job.ID, job.Duration, job.State, job.MonitoringStatus); err != nil {
|
|
handleError(fmt.Errorf("marking job as stopped failed: %w", err), http.StatusInternalServerError, rw)
|
|
return
|
|
}
|
|
|
|
log.Printf("archiving job... (dbid: %d): cluster=%s, jobId=%d, user=%s, startTime=%s", job.ID, job.Cluster, job.JobID, job.User, job.StartTime)
|
|
|
|
// Send a response (with status OK). This means that erros that happen from here on forward
|
|
// can *NOT* be communicated to the client. If reading from a MetricDataRepository or
|
|
// writing to the filesystem fails, the client will not know.
|
|
rw.Header().Add("Content-Type", "application/json")
|
|
rw.WriteHeader(http.StatusOK)
|
|
json.NewEncoder(rw).Encode(job)
|
|
|
|
// Monitoring is disabled...
|
|
if job.MonitoringStatus == schema.MonitoringStatusDisabled {
|
|
return
|
|
}
|
|
|
|
// We need to start a new goroutine as this functions needs to return
|
|
// for the response to be flushed to the client.
|
|
api.OngoingArchivings.Add(1) // So that a shutdown does not interrupt this goroutine.
|
|
go func() {
|
|
defer api.OngoingArchivings.Done()
|
|
|
|
// metricdata.ArchiveJob will fetch all the data from a MetricDataRepository and create meta.json/data.json files
|
|
jobMeta, err := metricdata.ArchiveJob(job, context.Background())
|
|
if err != nil {
|
|
log.Errorf("archiving job (dbid: %d) failed: %s", job.ID, err.Error())
|
|
api.JobRepository.UpdateMonitoringStatus(job.ID, schema.MonitoringStatusArchivingFailed)
|
|
return
|
|
}
|
|
|
|
// Update the jobs database entry one last time:
|
|
if err := api.JobRepository.Archive(job.ID, schema.MonitoringStatusArchivingSuccessful, jobMeta.Statistics); err != nil {
|
|
log.Errorf("archiving job (dbid: %d) failed: %s", job.ID, err.Error())
|
|
return
|
|
}
|
|
|
|
log.Printf("archiving job (dbid: %d) successful", job.ID)
|
|
}()
|
|
}
|
|
|
|
func (api *RestApi) getJobMetrics(rw http.ResponseWriter, r *http.Request) {
|
|
id := mux.Vars(r)["id"]
|
|
metrics := r.URL.Query()["metric"]
|
|
var scopes []schema.MetricScope
|
|
for _, scope := range r.URL.Query()["scope"] {
|
|
var s schema.MetricScope
|
|
if err := s.UnmarshalGQL(scope); err != nil {
|
|
http.Error(rw, err.Error(), http.StatusBadRequest)
|
|
return
|
|
}
|
|
scopes = append(scopes, s)
|
|
}
|
|
|
|
rw.Header().Add("Content-Type", "application/json")
|
|
rw.WriteHeader(http.StatusOK)
|
|
|
|
type Respone struct {
|
|
Data *struct {
|
|
JobMetrics []*model.JobMetricWithName `json:"jobMetrics"`
|
|
} `json:"data"`
|
|
Error *struct {
|
|
Message string `json:"message"`
|
|
} `json:"error"`
|
|
}
|
|
|
|
data, err := api.Resolver.Query().JobMetrics(r.Context(), id, metrics, scopes)
|
|
if err != nil {
|
|
json.NewEncoder(rw).Encode(Respone{
|
|
Error: &struct {
|
|
Message string "json:\"message\""
|
|
}{Message: err.Error()},
|
|
})
|
|
return
|
|
}
|
|
|
|
json.NewEncoder(rw).Encode(Respone{
|
|
Data: &struct {
|
|
JobMetrics []*model.JobMetricWithName "json:\"jobMetrics\""
|
|
}{JobMetrics: data},
|
|
})
|
|
}
|
|
|
|
func (api *RestApi) putMachineState(rw http.ResponseWriter, r *http.Request) {
|
|
if api.MachineStateDir == "" {
|
|
http.Error(rw, "not enabled", http.StatusNotFound)
|
|
return
|
|
}
|
|
|
|
vars := mux.Vars(r)
|
|
cluster := vars["cluster"]
|
|
host := vars["host"]
|
|
dir := filepath.Join(api.MachineStateDir, cluster)
|
|
if err := os.MkdirAll(dir, 0755); err != nil {
|
|
http.Error(rw, err.Error(), http.StatusInternalServerError)
|
|
return
|
|
}
|
|
|
|
filename := filepath.Join(dir, fmt.Sprintf("%s.json", host))
|
|
f, err := os.Create(filename)
|
|
if err != nil {
|
|
http.Error(rw, err.Error(), http.StatusInternalServerError)
|
|
return
|
|
}
|
|
defer f.Close()
|
|
|
|
if _, err := io.Copy(f, r.Body); err != nil {
|
|
http.Error(rw, err.Error(), http.StatusInternalServerError)
|
|
return
|
|
}
|
|
|
|
rw.WriteHeader(http.StatusCreated)
|
|
}
|
|
|
|
func (api *RestApi) getMachineState(rw http.ResponseWriter, r *http.Request) {
|
|
if api.MachineStateDir == "" {
|
|
http.Error(rw, "not enabled", http.StatusNotFound)
|
|
return
|
|
}
|
|
|
|
vars := mux.Vars(r)
|
|
filename := filepath.Join(api.MachineStateDir, vars["cluster"], fmt.Sprintf("%s.json", vars["host"]))
|
|
|
|
// Sets the content-type and 'Last-Modified' Header and so on automatically
|
|
http.ServeFile(rw, r, filename)
|
|
}
|