/
pages.go
228 lines (216 loc) · 6.08 KB
/
pages.go
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// Copyright 2020 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package worker
import (
"bytes"
"context"
"errors"
"io"
"net/http"
"os"
"runtime"
"sort"
"strings"
"time"
"github.com/google/safehtml/template"
"github.com/khulnasoft-lab/godep/internal"
"github.com/khulnasoft-lab/godep/internal/config"
"github.com/khulnasoft-lab/godep/internal/config/serverconfig"
"github.com/khulnasoft-lab/godep/internal/derrors"
"github.com/khulnasoft-lab/godep/internal/log"
"github.com/khulnasoft-lab/godep/internal/memory"
"github.com/khulnasoft-lab/godep/internal/postgres"
"golang.org/x/sync/errgroup"
)
type annotation struct {
error
msg string
}
var startTime = time.Now()
// doIndexPage writes the status page. On error it returns the error and a short
// string to be written back to the client.
func (s *Server) doIndexPage(w http.ResponseWriter, r *http.Request) (err error) {
defer derrors.Wrap(&err, "doIndexPage")
var (
experiments []*internal.Experiment
excluded []string
)
if s.getExperiments != nil {
experiments = s.getExperiments()
}
g, ctx := errgroup.WithContext(r.Context())
g.Go(func() error {
var err error
excluded, err = s.db.GetExcludedPrefixes(ctx)
if err != nil {
return annotation{err, "error fetching excluded"}
}
return nil
})
if err := g.Wait(); err != nil {
var e annotation
if errors.As(err, &e) {
log.Errorf(ctx, e.msg, err)
}
return err
}
gms := memory.ReadRuntimeStats()
sms, err := memory.ReadSystemStats()
if err != nil {
log.Errorf(ctx, "could not get system stats: %v", err)
}
pms, err := memory.ReadProcessStats()
if err != nil {
log.Errorf(ctx, "could not get process stats: %v", err)
}
cms, err := memory.ReadCgroupStats()
if err != nil {
log.Warningf(ctx, "could not get cgroup stats: %v", err)
}
var logsURL string
if serverconfig.OnGKE() {
env := s.cfg.DeploymentEnvironment()
cluster := env + "-" + "godep"
logsURL = `https://pantheon.corp.google.com/logs/query;query=resource.type%3D%22k8s_container%22%20resource.labels.cluster_name%3D%22` +
cluster +
`%22%20resource.labels.container_name%3D%22worker%22?project=` +
s.cfg.ProjectID
} else {
logsURL = `https://cloud.google.com/console/logs/viewer?resource=gae_app%2Fmodule_id%2F` + s.cfg.ServiceID + `&project=` +
s.cfg.ProjectID
}
page := struct {
Config *config.Config
Env string
ResourcePrefix string
LatestTimestamp *time.Time
LocationID string
Hostname string
StartTime time.Time
Experiments []*internal.Experiment
Excluded []string
LoadShedStats LoadShedStats
GoMemStats runtime.MemStats
ProcessStats memory.ProcessStats
SystemStats memory.SystemStats
CgroupStats map[string]uint64
Fetches []*FetchInfo
LogsURL string
DBInfo *postgres.UserInfo
}{
Config: s.cfg,
Env: env(s.cfg),
ResourcePrefix: strings.ToLower(env(s.cfg)) + "-",
LocationID: s.cfg.LocationID,
Hostname: os.Getenv("HOSTNAME"),
StartTime: startTime,
Experiments: experiments,
Excluded: excluded,
LoadShedStats: s.ZipLoadShedStats(),
GoMemStats: gms,
ProcessStats: pms,
SystemStats: sms,
CgroupStats: cms,
Fetches: FetchInfos(),
LogsURL: logsURL,
DBInfo: s.workerDBInfo(),
}
return renderPage(ctx, w, page, s.templates[indexTemplate])
}
func (s *Server) doVersionsPage(w http.ResponseWriter, r *http.Request) (err error) {
defer derrors.Wrap(&err, "doVersionsPage")
const pageSize = 20
g, ctx := errgroup.WithContext(r.Context())
var (
next, failures, recents []*internal.ModuleVersionState
stats *postgres.VersionStats
)
g.Go(func() error {
var err error
next, err = s.db.GetNextModulesToFetch(ctx, pageSize)
if err != nil {
return annotation{err, "error fetching next versions"}
}
return nil
})
g.Go(func() error {
var err error
failures, err = s.db.GetRecentFailedVersions(ctx, pageSize)
if err != nil {
return annotation{err, "error fetching recent failures"}
}
return nil
})
g.Go(func() error {
var err error
recents, err = s.db.GetRecentVersions(ctx, pageSize)
if err != nil {
return annotation{err, "error fetching recent versions"}
}
return nil
})
g.Go(func() error {
var err error
stats, err = s.db.GetVersionStats(ctx)
if err != nil {
return annotation{err, "error fetching stats"}
}
return nil
})
if err := g.Wait(); err != nil {
var e annotation
if errors.As(err, &e) {
log.Errorf(ctx, e.msg, err)
}
return err
}
type count struct {
Code int
Desc string
Count int
}
var counts []*count
for code, n := range stats.VersionCounts {
c := &count{Code: code, Count: n}
if e := derrors.FromStatus(code, ""); e != nil && e != derrors.Unknown {
c.Desc = e.Error()
}
counts = append(counts, c)
}
sort.Slice(counts, func(i, j int) bool { return counts[i].Code < counts[j].Code })
page := struct {
Next, Recent, RecentFailures []*internal.ModuleVersionState
Config *config.Config
Env string
ResourcePrefix string
LatestTimestamp *time.Time
Counts []*count
}{
Next: next,
Recent: recents,
RecentFailures: failures,
Config: s.cfg,
Env: env(s.cfg),
ResourcePrefix: strings.ToLower(env(s.cfg)) + "-",
LatestTimestamp: &stats.LatestTimestamp,
Counts: counts,
}
return renderPage(ctx, w, page, s.templates[versionsTemplate])
}
func env(cfg *config.Config) string {
e := cfg.DeploymentEnvironment()
return strings.ToUpper(e[:1]) + e[1:]
}
func renderPage(ctx context.Context, w http.ResponseWriter, page any, tmpl *template.Template) (err error) {
defer derrors.Wrap(&err, "renderPage")
var buf bytes.Buffer
if err := tmpl.Execute(&buf, page); err != nil {
return err
}
if _, err := io.Copy(w, &buf); err != nil {
log.Errorf(ctx, "Error copying buffer to ResponseWriter: %v", err)
return err
}
return nil
}