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models: Migrated last from model

1.1
Gisle Aune 6 years ago
parent
b7d5059d60
commit
4979b02104
7 changed files with 88 additions and 476 deletions
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  1. 105
      model/change/change.go
  2. 118
      model/change/timeline.go
  3. 253
      model/file/file.go
  4. 2
      models/files/db.go
  5. 5
      models/files/find.go
  6. 29
      models/files/insert.go
  7. 52
      models/files/upload.go

105
model/change/change.go
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@ -1,105 +0,0 @@
package change
import (
"log"
"sync"
"time"
"git.aiterp.net/rpdata/api/model/counter"
"git.aiterp.net/rpdata/api/internal/store"
"github.com/globalsign/mgo"
)
var collection *mgo.Collection
// A Change represents a change in any other model
type Change struct {
ID int `bson:"_id" json:"id"`
Time time.Time `bson:"time" json:"time"`
Model string `bson:"model" json:"model"`
Op string `bson:"op" json:"op"`
Author string `bson:"author,omitempty" json:"author,omitempty"`
ObjectID string `bson:"objectId,omitempty" json:"objectId,omitempty"`
Data interface{} `bson:"data,omitempty" json:"data,omitempty"`
}
// PublicModels lists which models can be listed in bulk by anyone.
var PublicModels = []string{
"Character",
"Log",
"Post",
}
var submitMutex sync.Mutex
// Submit submits a change to the history.
func Submit(model, op, author, objectID string, data interface{}) (Change, error) {
submitMutex.Lock()
defer submitMutex.Unlock()
index, err := counter.Next("auto_increment", "Change")
if err != nil {
return Change{}, err
}
change := Change{
ID: index,
Time: time.Now(),
Model: model,
Op: op,
Author: author,
ObjectID: objectID,
Data: data,
}
Timeline.push(change)
err = collection.Insert(&change)
if err != nil {
return Change{}, err
}
return change, err
}
// FindID gets a change by ID
func FindID(id int) (Change, error) {
change := Change{}
err := collection.FindId(id).One(&change)
if err != nil {
return Change{}, err
}
return change, nil
}
// List gets all changes in ascending order
func List() ([]Change, error) {
changes := make([]Change, 0, 64)
err := collection.Find(nil).Sort("_id").All(&changes)
if err != nil {
return nil, err
}
return changes, nil
}
func init() {
store.HandleInit(func(db *mgo.Database) {
collection = db.C("common.history")
collection.EnsureIndexKey("model")
collection.EnsureIndexKey("author")
collection.EnsureIndexKey("objectId")
err := collection.EnsureIndex(mgo.Index{
Name: "expiry",
Key: []string{"time"},
ExpireAfter: time.Hour * 336,
})
if err != nil {
log.Fatalln(err)
}
})
}

118
model/change/timeline.go
View File

@ -1,118 +0,0 @@
package change
import (
"context"
"errors"
"sync"
"github.com/globalsign/mgo"
)
// ErrInvalidIndex is returned when a timeline subscriber tries to get a value
// with a negative id
var ErrInvalidIndex = errors.New("change.timeline: Invalid ID")
// ErrWaitRequired is returned when a timeline subscriber requests an entry that
// has not yet been pushed
var ErrWaitRequired = errors.New("change.timeline: Waiting required")
// ErrExpired is returned when a timeline subscriber requests a change that happened
// too long ago for it to be in the database.
var ErrExpired = errors.New("change.timeline: Change has expired")
type timeline struct {
mutex sync.Mutex
firstIndex int64
currentID int64
cache []Change
notifyCh chan struct{}
}
func (timeline *timeline) Get(ctx context.Context, id int64) (Change, error) {
change, err := timeline.get(id, false)
if err == ErrWaitRequired {
if err := timeline.wait(ctx); err != nil {
return Change{}, err
}
return timeline.get(id, true)
} else if err == mgo.ErrNotFound {
return Change{}, ErrExpired
}
return change, nil
}
func (timeline *timeline) push(change Change) {
timeline.mutex.Lock()
timeline.cache = append(timeline.cache, change)
if len(timeline.cache) > 128 {
copy(timeline.cache, timeline.cache[32:])
timeline.cache = timeline.cache[:len(timeline.cache)-32]
}
// Only update the currentID if this is more recent than the existing ones
if int64(change.ID) > timeline.currentID {
timeline.currentID = int64(change.ID)
}
if timeline.notifyCh != nil {
close(timeline.notifyCh)
timeline.notifyCh = nil
}
timeline.mutex.Unlock()
}
func (timeline *timeline) get(id int64, hasWaited bool) (Change, error) {
if id < 0 {
return Change{}, ErrInvalidIndex
}
timeline.mutex.Lock()
if !hasWaited && id > timeline.currentID {
timeline.mutex.Unlock()
return Change{}, ErrWaitRequired
}
for _, change := range timeline.cache {
if change.ID == int(id) {
timeline.mutex.Unlock()
return change, nil
}
}
timeline.mutex.Unlock()
return FindID(int(id))
}
func (timeline *timeline) wait(ctx context.Context) error {
timeline.mutex.Lock()
if timeline.notifyCh == nil {
timeline.notifyCh = make(chan struct{})
}
ch := timeline.notifyCh
timeline.mutex.Unlock()
select {
case <-ctx.Done():
return ctx.Err()
case <-ch:
return nil
}
}
// Timeline has operations for subscribing to changes in real time
var Timeline = &timeline{}
// InitializeTimeline fills in the timeline with existing entries
func InitializeTimeline() {
changes, err := List()
if err != nil {
return
}
for _, change := range changes {
Timeline.push(change)
}
}

253
model/file/file.go
View File

@ -1,253 +0,0 @@
package file
import (
"context"
"crypto/rand"
"encoding/binary"
"errors"
"io"
"strconv"
"time"
"git.aiterp.net/rpdata/api/internal/store"
"github.com/globalsign/mgo"
"github.com/globalsign/mgo/bson"
)
var fileCollection *mgo.Collection
// A File is a record of a file stored in the Space.
type File struct {
ID string `bson:"_id" json:"id"`
Time time.Time `bson:"time" json:"time"`
Kind string `bson:"kind" json:"kind"`
Public bool `bson:"public" json:"public"`
Name string `bson:"name" json:"name"`
MimeType string `bson:"mimeType" json:"mimeType"`
Size int64 `bson:"size" json:"size"`
Author string `bson:"author" json:"author"`
URL string `bson:"url,omitempty" json:"url,omitempty"`
}
// Edit edits the file, changing up to both the two mutable properties
func (file *File) Edit(name *string, public *bool) error {
changes := bson.M{}
changedFile := *file
if name != nil && *name != file.Name {
changes["name"] = *name
changedFile.Name = *name
}
if public != nil && *public != file.Public {
changes["public"] = *public
changedFile.Public = *public
}
if len(changes) == 0 {
return nil
}
err := fileCollection.UpdateId(file.ID, bson.M{"$set": changes})
if err != nil {
return err
}
*file = changedFile
return nil
}
// Delete removes the file information from the database, and deletes the file.
func (file *File) Delete() error {
err := fileCollection.RemoveId(file.ID)
if err != nil {
return err
}
if file.Kind == "upload" {
err = store.RemoveFile("files", file.ID)
if err != nil {
return err
}
}
file.URL = ""
return nil
}
// Insert manually inserts file information into the database. This should never, ever be API accessible
func Insert(name, kind, mimeType, author string, time time.Time, size int64, url string) (File, error) {
file := File{
ID: makeFileID(),
Kind: kind,
Time: time,
Public: false,
Author: author,
Name: name,
MimeType: mimeType,
Size: size,
URL: url,
}
err := fileCollection.Insert(file)
if err != nil {
return File{}, err
}
return file, nil
}
// Upload adds a file to the space.
func Upload(ctx context.Context, name, mimeType, author string, size int64, input io.Reader) (File, error) {
if !allowdMimeTypes[mimeType] {
return File{}, errors.New("File type not allowed:" + mimeType)
}
if name == "" {
date := time.Now().UTC().Format("Jan 02 2006 15:04:05 MST")
name = "Unnamed file (" + date + ")"
}
if mimeType == "" {
mimeType = "binary/octet-stream"
}
id := makeFileID()
path, err := store.UploadFile(ctx, "files", id, mimeType, input, size)
if err != nil {
return File{}, err
}
file := File{
ID: id,
Kind: "upload",
Time: time.Now(),
Public: false,
Author: author,
Name: name,
MimeType: mimeType,
Size: size,
URL: store.URLFromPath(path),
}
err = fileCollection.Insert(file)
if err != nil {
return File{}, err
}
return file, nil
}
// FindID finds a file by ID
func FindID(id string) (File, error) {
file := File{}
err := fileCollection.FindId(id).One(&file)
if err != nil {
return File{}, err
}
return file, nil
}
// FindName finds a file by kind, name and author
func FindName(kind string, name string, author string) (File, error) {
query := bson.M{"kind": kind, "name": name, "author": author}
file := File{}
err := fileCollection.Find(query).One(&file)
if err != nil {
return File{}, err
}
return file, nil
}
// List lists files according to the standard lookup. By default it's just the author's own files,
// but if `public` is true it will alos include files made public by other authors. If `mimeTypes` contains
// any, it will limit the results to that. If `author` is empty, it will only list public files
func List(author string, public *bool, mimeTypes []string) ([]File, error) {
query := bson.M{}
if author != "" {
if public != nil {
if *public == false {
query["author"] = author
}
query["public"] = *public
} else {
query["author"] = author
}
} else {
if public != nil && *public == false {
return nil, errors.New("You cannot")
}
query["public"] = true
}
if len(mimeTypes) > 0 {
query["mimeTypes"] = bson.M{"$in": mimeTypes}
}
return listFiles(query)
}
func listFiles(query interface{}) ([]File, error) {
list := make([]File, 0, 32)
err := fileCollection.Find(query).Sort("-time").All(&list)
if err != nil {
return nil, err
}
return list, nil
}
// makeFileID makes a random file ID that's 32 characters long
func makeFileID() string {
result := "F" + strconv.FormatInt(time.Now().UnixNano(), 36)
offset := 0
data := make([]byte, 32)
rand.Read(data)
for len(result) < 32 {
result += strconv.FormatUint(binary.LittleEndian.Uint64(data[offset:]), 36)
offset += 8
if offset >= 32 {
rand.Read(data)
offset = 0
}
}
return result[:32]
}
func init() {
store.HandleInit(func(db *mgo.Database) {
fileCollection = db.C("file.headers")
fileCollection.EnsureIndexKey("author")
fileCollection.EnsureIndexKey("public")
fileCollection.EnsureIndexKey("kind", "name", "author")
fileCollection.EnsureIndexKey("author", "public")
fileCollection.EnsureIndexKey("kind")
})
}
var allowdMimeTypes = map[string]bool{
"": false,
"image/jpeg": true,
"image/png": true,
"image/gif": true,
"text/plain": true,
"application/json": true,
"application/pdf": false,
"binary/octet-stream": false,
"video/mp4": false,
"audio/mp3": false,
}

2
models/files/db.go
View File

@ -72,6 +72,8 @@ var allowdMimeTypes = map[string]bool{
"image/jpeg": true,
"image/png": true,
"image/gif": true,
"image/tiff": true,
"image/tga": true,
"text/plain": true,
"application/json": true,
"application/pdf": false,

5
models/files/find.go
View File

@ -9,3 +9,8 @@ import (
func FindID(id string) (models.File, error) {
return find(bson.M{"_id": id})
}
// FindName finds a file by ID
func FindName(kind, name, author string) (models.File, error) {
return find(bson.M{"name": name, "kind": kind, "author": author})
}

29
models/files/insert.go
View File

@ -0,0 +1,29 @@
package files
import (
"time"
"git.aiterp.net/rpdata/api/models"
)
// Insert manually inserts file information into the database. This should never, ever be HTTP API accessible
func Insert(name, kind, mimeType, author string, time time.Time, size int64, url string) (models.File, error) {
file := models.File{
ID: makeID(),
Kind: kind,
Time: time,
Public: false,
Author: author,
Name: name,
MimeType: mimeType,
Size: size,
URL: url,
}
err := collection.Insert(file)
if err != nil {
return models.File{}, err
}
return file, nil
}

52
models/files/upload.go
View File

@ -0,0 +1,52 @@
package files
import (
"context"
"errors"
"io"
"time"
"git.aiterp.net/rpdata/api/internal/store"
"git.aiterp.net/rpdata/api/models"
)
// Upload adds a file to the space.
func Upload(ctx context.Context, name, mimeType, author string, size int64, input io.Reader) (models.File, error) {
if !allowdMimeTypes[mimeType] {
return models.File{}, errors.New("File type not allowed:" + mimeType)
}
if name == "" {
date := time.Now().UTC().Format("Jan 02 2006 15:04:05 MST")
name = "Unnamed file (" + date + ")"
}
if mimeType == "" {
mimeType = "binary/octet-stream"
}
id := makeID()
path, err := store.UploadFile(ctx, "files", id, mimeType, input, size)
if err != nil {
return models.File{}, err
}
file := models.File{
ID: id,
Kind: "upload",
Time: time.Now(),
Public: false,
Author: author,
Name: name,
MimeType: mimeType,
Size: size,
URL: store.URLFromPath(path),
}
err = collection.Insert(file)
if err != nil {
return models.File{}, err
}
return file, nil
}
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