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task_queue.go
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task_queue.go
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package service
import (
"fmt"
"net/http"
"time"
"github.com/evergreen-ci/evergreen"
"github.com/evergreen-ci/evergreen/db"
"github.com/evergreen-ci/evergreen/model"
"github.com/evergreen-ci/evergreen/model/distro"
"github.com/evergreen-ci/evergreen/model/host"
"github.com/evergreen-ci/evergreen/model/patch"
"github.com/evergreen-ci/evergreen/model/task"
"github.com/mongodb/grip"
"github.com/pkg/errors"
)
// ui version of a task queue item
type uiTaskQueueItem struct {
Id string `json:"_id"`
DisplayName string `json:"display_name"`
BuildVariant string `json:"build_variant"`
RevisionOrderNumber int `json:"order"`
Requester string `json:"requester"`
Revision string `json:"gitspec"`
Project string `json:"project"`
Version string `json:"version"`
Build string `json:"build"`
ExpectedDuration time.Duration `json:"exp_dur"`
Priority int64 `json:"priority"`
// only if it's a patch request task
User string `json:"user,omitempty"`
}
// ui version of a task queue, for wrapping the ui versions of task queue
// items
type uiTaskQueue struct {
Distro string `json:"distro"`
Queue []uiTaskQueueItem `json:"queue"`
}
// top-level ui struct for holding information on task
// queues and host usage
type uiResourceInfo struct {
TaskQueues []uiTaskQueue `json:"task_queues"`
HostStatistics uiHostStatistics `json:"host_stats"`
Distros []string `json:"distros"`
}
// information on host utilization
type uiHostStatistics struct {
IdleHosts int `json:"idle_hosts"`
ActiveHosts int `json:"active_hosts"`
ActiveStaticHosts int `json:"active_static_hosts"`
IdleStaticHosts int `json:"idle_static_hosts"`
}
func (uis *UIServer) allTaskQueues(w http.ResponseWriter, r *http.Request) {
taskQueues, err := model.FindAllTaskQueues()
if err != nil {
uis.LoggedError(w, r, http.StatusInternalServerError,
errors.Wrap(err, "Error finding task queues"))
return
}
// find all distros so that we only display task queues of distros that exist.
allDistros, err := distro.Find(distro.All.WithFields(distro.IdKey))
if err != nil {
message := fmt.Sprintf("error fetching distros: %v", err)
http.Error(w, message, http.StatusInternalServerError)
return
}
distroIds := []string{}
for _, d := range allDistros {
distroIds = append(distroIds, d.Id)
}
// cached map of version id to relevant patch
cachedPatches := map[string]*patch.Patch{}
// convert the task queues to the ui versions
uiTaskQueues := []uiTaskQueue{}
var tasks []task.Task
for _, tQ := range taskQueues {
asUI := uiTaskQueue{
Distro: tQ.Distro,
Queue: []uiTaskQueueItem{},
}
if len(tQ.Queue) == 0 {
uiTaskQueues = append(uiTaskQueues, asUI)
continue
}
// convert the individual task queue items
taskIds := []string{}
for _, item := range tQ.Queue {
// cache the ids, for fetching the tasks from the db
taskIds = append(taskIds, item.Id)
queueItemAsUI := uiTaskQueueItem{
Id: item.Id,
DisplayName: item.DisplayName,
BuildVariant: item.BuildVariant,
RevisionOrderNumber: item.RevisionOrderNumber,
Requester: item.Requester,
Revision: item.Revision,
Project: item.Project,
ExpectedDuration: item.ExpectedDuration,
Priority: item.Priority,
}
asUI.Queue = append(asUI.Queue, queueItemAsUI)
}
// find all the relevant tasks
tasks, err = task.Find(task.ByIds(taskIds).WithFields(task.VersionKey, task.BuildIdKey))
if err != nil {
msg := fmt.Sprintf("Error finding tasks: %v", err)
grip.Error(msg)
http.Error(w, msg, http.StatusInternalServerError)
return
}
// store all of the version and build ids in the relevant task queue
// items
for _, task := range tasks {
// this sucks, but it's because we're not guaranteed the order out
// of the db
for idx, queueItemAsUI := range asUI.Queue {
if queueItemAsUI.Id == task.Id {
queueItemAsUI.Version = task.Version
queueItemAsUI.Build = task.BuildId
asUI.Queue[idx] = queueItemAsUI
}
}
}
// add all of the necessary patch info into the relevant task queue
// items
for idx, queueItemAsUI := range asUI.Queue {
if evergreen.IsPatchRequester(queueItemAsUI.Requester) {
// fetch the patch, if necessary
var p *patch.Patch
var ok bool
if p, ok = cachedPatches[queueItemAsUI.Version]; ok {
queueItemAsUI.User = p.Author
asUI.Queue[idx] = queueItemAsUI
} else {
p, err = patch.FindOne(
patch.ByVersion(queueItemAsUI.Version).WithFields(patch.AuthorKey),
)
if err != nil {
msg := fmt.Sprintf("Error finding patch: %v", err)
grip.Error(msg)
http.Error(w, msg, http.StatusInternalServerError)
return
}
if p == nil {
msg := fmt.Sprintf("Couldn't find patch for version %v", queueItemAsUI.Version)
grip.Error(msg)
http.Error(w, msg, http.StatusInternalServerError)
return
}
cachedPatches[queueItemAsUI.Version] = p
}
queueItemAsUI.User = p.Author
asUI.Queue[idx] = queueItemAsUI
}
}
uiTaskQueues = append(uiTaskQueues, asUI)
}
// add other useful statistics to view alongside queue
idleHosts, err := host.Find(host.IsIdle)
if err != nil {
msg := fmt.Sprintf("Error finding idle hosts: %v", err)
grip.Error(msg)
http.Error(w, msg, http.StatusInternalServerError)
return
}
activeHosts, err := host.Find(db.Query(host.IsLive()))
if err != nil {
msg := fmt.Sprintf("Error finding active hosts: %v", err)
grip.Error(msg)
http.Error(w, msg, http.StatusInternalServerError)
return
}
idleStaticHostsCount := 0
for _, host := range idleHosts {
if host.Provider == evergreen.HostTypeStatic {
idleStaticHostsCount++
}
}
activeStaticHostsCount := 0
for _, host := range activeHosts {
if host.Provider == evergreen.HostTypeStatic {
activeStaticHostsCount++
}
}
hostStats := uiHostStatistics{
ActiveHosts: len(activeHosts),
ActiveStaticHosts: activeStaticHostsCount,
IdleHosts: len(idleHosts),
IdleStaticHosts: idleStaticHostsCount,
}
uis.WriteHTML(w, http.StatusOK, struct {
Data uiResourceInfo
ViewData
}{uiResourceInfo{uiTaskQueues, hostStats, distroIds}, uis.GetCommonViewData(w, r, false, true)},
"base", "task_queues.html", "base_angular.html", "menu.html")
}