/
meeting.go
145 lines (126 loc) · 3.5 KB
/
meeting.go
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// Copyright 2015 Canonical Ltd.
// Licensed under the AGPLv3, see LICENCE file for details.
package mgostore
import (
"strconv"
"time"
"github.com/juju/utils/debugstatus"
"golang.org/x/net/context"
"gopkg.in/errgo.v1"
"gopkg.in/mgo.v2"
"gopkg.in/mgo.v2/bson"
)
type doc struct {
Id string `bson:"_id"`
Addr string
Created time.Time
}
const meetingCollection = "meeting"
// meetingStore is an implementation of meeting.Store that uses a mongodb
// collection for the persistent data store.
type meetingStore struct {
b *backend
}
// Context implements meeting.Store.Context.
func (s *meetingStore) Context(ctx context.Context) (_ context.Context, cancel func()) {
return s.b.context(ctx)
}
// Put implements meeting.Store.Put.
func (s *meetingStore) Put(ctx context.Context, id, address string) error {
return s.put(ctx, id, address, time.Now())
}
// put is the internal version of Put which takes a time
// for testing purposes.
func (s *meetingStore) put(ctx context.Context, id, address string, now time.Time) error {
coll := s.b.c(ctx, meetingCollection)
defer coll.Database.Session.Close()
err := coll.Insert(&doc{
Id: id,
Addr: address,
Created: now,
})
if err != nil {
return errgo.Mask(err)
}
return nil
}
// Get implements meeting.Store.Get.
func (s *meetingStore) Get(ctx context.Context, id string) (address string, err error) {
coll := s.b.c(ctx, meetingCollection)
defer coll.Database.Session.Close()
var entry doc
err = coll.FindId(id).One(&entry)
if err == mgo.ErrNotFound {
err = errgo.Newf("rendezvous not found, probably expired")
}
if err != nil {
return "", errgo.Mask(err)
}
return entry.Addr, nil
}
// Remove implements meeting.Store.Remove.
func (s *meetingStore) Remove(ctx context.Context, id string) (time.Time, error) {
coll := s.b.c(ctx, meetingCollection)
defer coll.Database.Session.Close()
var entry doc
change := mgo.Change{
Remove: true,
}
_, err := coll.FindId(id).Apply(change, &entry)
if err == mgo.ErrNotFound {
return time.Time{}, nil
}
if err != nil && err != mgo.ErrNotFound {
return time.Time{}, errgo.Mask(err)
}
return entry.Created, nil
}
// RemoveOld implements meeting.Store.RemoveOld.
func (s *meetingStore) RemoveOld(ctx context.Context, addr string, olderThan time.Time) (ids []string, err error) {
coll := s.b.c(ctx, meetingCollection)
defer coll.Database.Session.Close()
query := bson.D{{"created", bson.D{{"$lt", olderThan}}}}
if addr != "" {
query = append(query, bson.DocElem{"addr", addr})
}
iter := coll.Find(query).Select(nil).Iter()
var entry doc
for iter.Next(&entry) {
err := coll.RemoveId(entry.Id)
if err != nil {
return ids, errgo.Notef(err, "cannot remove %q", entry.Id)
}
ids = append(ids, entry.Id)
}
if err := iter.Err(); err != nil {
return ids, errgo.Mask(err)
}
return ids, nil
}
var indexes = []mgo.Index{{
Key: []string{"addr", "created"},
}, {
Key: []string{"created"},
}}
func ensureMeetingIndexes(db *mgo.Database) error {
coll := db.C(meetingCollection)
for _, idx := range indexes {
if err := coll.EnsureIndex(idx); err != nil {
return errgo.Mask(err)
}
}
return nil
}
func (b *backend) meetingStatus() (key string, result debugstatus.CheckResult) {
result.Name = "count of meeting collection"
result.Passed = true
coll := b.c(context.Background(), meetingCollection)
defer coll.Database.Session.Close()
c, err := coll.Count()
result.Value = strconv.Itoa(c)
if err != nil {
result.Value = err.Error()
result.Passed = false
}
return "meeting_count", result
}