go.chromium.org/luci@v0.0.0-20240309015107-7cdc2e660f33/server/portal/index.go (about)

     1  // Copyright 2016 The LUCI Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package portal
    16  
    17  import (
    18  	"sort"
    19  	"time"
    20  
    21  	"github.com/dustin/go-humanize"
    22  
    23  	"go.chromium.org/luci/common/clock"
    24  
    25  	"go.chromium.org/luci/server/router"
    26  	"go.chromium.org/luci/server/settings"
    27  	"go.chromium.org/luci/server/templates"
    28  )
    29  
    30  type pageIndexEntry struct {
    31  	ID    string
    32  	Title string
    33  }
    34  
    35  type pageIndexEntries []pageIndexEntry
    36  
    37  func (a pageIndexEntries) Len() int           { return len(a) }
    38  func (a pageIndexEntries) Swap(i, j int)      { a[i], a[j] = a[j], a[i] }
    39  func (a pageIndexEntries) Less(i, j int) bool { return a[i].Title < a[j].Title }
    40  
    41  func indexPage(ctx *router.Context) {
    42  	c, rw := ctx.Request.Context(), ctx.Writer
    43  
    44  	entries := pageIndexEntries{}
    45  	for id, p := range GetPages() {
    46  		title, err := p.Title(c)
    47  		if err != nil {
    48  			replyError(c, rw, err)
    49  			return
    50  		}
    51  		entries = append(entries, pageIndexEntry{
    52  			ID:    id,
    53  			Title: title,
    54  		})
    55  	}
    56  	sort.Sort(entries)
    57  
    58  	// Grab timestamp when last settings change hits all instances.
    59  	consistencyTime := time.Time{}
    60  	if s := settings.GetSettings(c); s != nil {
    61  		if storage, _ := s.GetStorage().(settings.EventualConsistentStorage); storage != nil {
    62  			var err error
    63  			if consistencyTime, err = storage.GetConsistencyTime(c); err != nil {
    64  				replyError(c, rw, err)
    65  				return
    66  			}
    67  		}
    68  	}
    69  
    70  	now := clock.Now(c).UTC()
    71  	templates.MustRender(c, rw, "pages/index.html", templates.Args{
    72  		"Entries":               entries,
    73  		"WaitingForConsistency": !consistencyTime.IsZero() && now.Before(consistencyTime),
    74  		"TimeToConsistency":     humanize.RelTime(consistencyTime, now, "", ""),
    75  	})
    76  }