lbry.go/ytsync/manager.go
Niko Storni f1ebf4a99d
update youtube download lib
drop sync server dependency
2018-09-26 16:27:25 -04:00

344 lines
10 KiB
Go

package ytsync
import (
"encoding/json"
"fmt"
"io/ioutil"
"net/http"
"net/url"
"strconv"
"strings"
"syscall"
"time"
"github.com/lbryio/lbry.go/errors"
"github.com/lbryio/lbry.go/null"
"github.com/lbryio/lbry.go/util"
log "github.com/sirupsen/logrus"
)
type SyncManager struct {
StopOnError bool
MaxTries int
TakeOverExistingChannel bool
Refill int
Limit int
SkipSpaceCheck bool
SyncUpdate bool
SyncStatus string
SyncFrom int64
SyncUntil int64
ConcurrentJobs int
ConcurrentVideos int
HostName string
YoutubeChannelID string
YoutubeAPIKey string
ApiURL string
ApiToken string
BlobsDir string
VideosLimit int
MaxVideoSize int
LbrycrdString string
AwsS3ID string
AwsS3Secret string
AwsS3Region string
AwsS3Bucket string
SingleRun bool
}
const (
StatusPending = "pending" // waiting for permission to sync
StatusQueued = "queued" // in sync queue. will be synced soon
StatusSyncing = "syncing" // syncing now
StatusSynced = "synced" // done
StatusFailed = "failed"
StatusFinalized = "finalized" // no more changes allowed
)
var SyncStatuses = []string{StatusPending, StatusQueued, StatusSyncing, StatusSynced, StatusFailed, StatusFinalized}
type apiJobsResponse struct {
Success bool `json:"success"`
Error null.String `json:"error"`
Data []apiYoutubeChannel `json:"data"`
}
type apiYoutubeChannel struct {
ChannelId string `json:"channel_id"`
TotalVideos uint `json:"total_videos"`
DesiredChannelName string `json:"desired_channel_name"`
SyncServer null.String `json:"sync_server"`
}
func (s *SyncManager) fetchChannels(status string) ([]apiYoutubeChannel, error) {
endpoint := s.ApiURL + "/yt/jobs"
res, _ := http.PostForm(endpoint, url.Values{
"auth_token": {s.ApiToken},
"sync_status": {status},
"min_videos": {strconv.Itoa(1)},
"after": {strconv.Itoa(int(s.SyncFrom))},
"before": {strconv.Itoa(int(s.SyncUntil))},
"sync_server": {s.HostName},
"channel_id": {s.YoutubeChannelID},
})
defer res.Body.Close()
body, _ := ioutil.ReadAll(res.Body)
var response apiJobsResponse
err := json.Unmarshal(body, &response)
if err != nil {
return nil, err
}
if response.Data == nil {
return nil, errors.Err(response.Error)
}
log.Printf("Fetched channels: %d", len(response.Data))
return response.Data, nil
}
type apiChannelStatusResponse struct {
Success bool `json:"success"`
Error null.String `json:"error"`
Data []syncedVideo `json:"data"`
}
type syncedVideo struct {
VideoID string `json:"video_id"`
Published bool `json:"published"`
FailureReason string `json:"failure_reason"`
ClaimName string `json:"claim_name"`
}
func (s *SyncManager) setChannelStatus(channelID string, status string, failureReason string) (map[string]syncedVideo, map[string]bool, error) {
endpoint := s.ApiURL + "/yt/channel_status"
if len(failureReason) > maxReasonLength {
failureReason = failureReason[:maxReasonLength]
}
res, _ := http.PostForm(endpoint, url.Values{
"channel_id": {channelID},
"sync_server": {s.HostName},
"auth_token": {s.ApiToken},
"sync_status": {status},
"failure_reason": {failureReason},
})
defer res.Body.Close()
body, _ := ioutil.ReadAll(res.Body)
var response apiChannelStatusResponse
err := json.Unmarshal(body, &response)
if err != nil {
return nil, nil, err
}
if !response.Error.IsNull() {
return nil, nil, errors.Err(response.Error.String)
}
if response.Data != nil {
svs := make(map[string]syncedVideo)
claimNames := make(map[string]bool)
for _, v := range response.Data {
svs[v.VideoID] = v
claimNames[v.ClaimName] = v.Published
}
return svs, claimNames, nil
}
return nil, nil, errors.Err("invalid API response. Status code: %d", res.StatusCode)
}
const (
VideoStatusPublished = "published"
VideoStatusFailed = "failed"
)
func (s *SyncManager) MarkVideoStatus(channelID string, videoID string, status string, claimID string, claimName string, failureReason string, size *int64) error {
endpoint := s.ApiURL + "/yt/video_status"
if len(failureReason) > maxReasonLength {
failureReason = failureReason[:maxReasonLength]
}
vals := url.Values{
"youtube_channel_id": {channelID},
"video_id": {videoID},
"status": {status},
"auth_token": {s.ApiToken},
}
if status == VideoStatusPublished {
if claimID == "" || claimName == "" {
return errors.Err("claimID or claimName missing")
}
vals.Add("published_at", strconv.FormatInt(time.Now().Unix(), 10))
vals.Add("claim_id", claimID)
vals.Add("claim_name", claimName)
if size != nil {
vals.Add("size", strconv.FormatInt(*size, 10))
}
}
if failureReason != "" {
vals.Add("failure_reason", failureReason)
}
res, _ := http.PostForm(endpoint, vals)
defer res.Body.Close()
body, _ := ioutil.ReadAll(res.Body)
var response struct {
Success bool `json:"success"`
Error null.String `json:"error"`
Data null.String `json:"data"`
}
err := json.Unmarshal(body, &response)
if err != nil {
return err
}
if !response.Error.IsNull() {
return errors.Err(response.Error.String)
}
if !response.Data.IsNull() && response.Data.String == "ok" {
return nil
}
return errors.Err("invalid API response. Status code: %d", res.StatusCode)
}
func (s *SyncManager) Start() error {
syncCount := 0
for {
err := s.checkUsedSpace()
if err != nil {
return err
}
var syncs []Sync
shouldInterruptLoop := false
isSingleChannelSync := s.YoutubeChannelID != ""
if isSingleChannelSync {
channels, err := s.fetchChannels("")
if err != nil {
return err
}
if len(channels) != 1 {
return errors.Err("Expected 1 channel, %d returned", len(channels))
}
lbryChannelName := channels[0].DesiredChannelName
if !s.isWorthProcessing(channels[0]) {
break
}
syncs = make([]Sync, 1)
syncs[0] = Sync{
YoutubeAPIKey: s.YoutubeAPIKey,
YoutubeChannelID: s.YoutubeChannelID,
LbryChannelName: lbryChannelName,
StopOnError: s.StopOnError,
MaxTries: s.MaxTries,
ConcurrentVideos: s.ConcurrentVideos,
TakeOverExistingChannel: s.TakeOverExistingChannel,
Refill: s.Refill,
Manager: s,
LbrycrdString: s.LbrycrdString,
AwsS3ID: s.AwsS3ID,
AwsS3Secret: s.AwsS3Secret,
AwsS3Region: s.AwsS3Region,
AwsS3Bucket: s.AwsS3Bucket,
}
shouldInterruptLoop = true
} else {
var queuesToSync []string
if s.SyncStatus != "" {
queuesToSync = append(queuesToSync, s.SyncStatus)
} else if s.SyncUpdate {
queuesToSync = append(queuesToSync, StatusSyncing, StatusSynced)
} else {
queuesToSync = append(queuesToSync, StatusSyncing, StatusQueued)
}
for _, q := range queuesToSync {
channels, err := s.fetchChannels(q)
if err != nil {
return err
}
for _, c := range channels {
if !s.isWorthProcessing(c) {
continue
}
syncs = append(syncs, Sync{
YoutubeAPIKey: s.YoutubeAPIKey,
YoutubeChannelID: c.ChannelId,
LbryChannelName: c.DesiredChannelName,
StopOnError: s.StopOnError,
MaxTries: s.MaxTries,
ConcurrentVideos: s.ConcurrentVideos,
TakeOverExistingChannel: s.TakeOverExistingChannel,
Refill: s.Refill,
Manager: s,
LbrycrdString: s.LbrycrdString,
AwsS3ID: s.AwsS3ID,
AwsS3Secret: s.AwsS3Secret,
AwsS3Region: s.AwsS3Region,
AwsS3Bucket: s.AwsS3Bucket,
})
}
}
}
if len(syncs) == 0 {
log.Infoln("No channels to sync. Pausing 5 minutes!")
time.Sleep(5 * time.Minute)
}
for i, sync := range syncs {
shouldNotCount := false
SendInfoToSlack("Syncing %s (%s) to LBRY! (iteration %d/%d - total processed channels: %d)", sync.LbryChannelName, sync.YoutubeChannelID, i+1, len(syncs), syncCount+1)
err := sync.FullCycle()
if err != nil {
fatalErrors := []string{
"default_wallet already exists",
"WALLET HAS NOT BEEN MOVED TO THE WALLET BACKUP DIR",
"NotEnoughFunds",
"no space left on device",
"failure uploading wallet",
}
if util.SubstringInSlice(err.Error(), fatalErrors) {
return errors.Prefix("@Nikooo777 this requires manual intervention! Exiting...", err)
}
shouldNotCount = strings.Contains(err.Error(), "this youtube channel is being managed by another server")
if !shouldNotCount {
SendInfoToSlack("A non fatal error was reported by the sync process. %s\nContinuing...", err.Error())
}
}
SendInfoToSlack("Syncing %s (%s) reached an end. (iteration %d/%d - total processed channels: %d)", sync.LbryChannelName, sync.YoutubeChannelID, i+1, len(syncs), syncCount+1)
if !shouldNotCount {
syncCount++
}
if sync.IsInterrupted() || (s.Limit != 0 && syncCount >= s.Limit) {
shouldInterruptLoop = true
break
}
}
if shouldInterruptLoop || s.SingleRun {
break
}
}
return nil
}
func (s *SyncManager) isWorthProcessing(channel apiYoutubeChannel) bool {
return channel.TotalVideos > 0 && (channel.SyncServer.IsNull() || channel.SyncServer.String == s.HostName)
}
func (s *SyncManager) checkUsedSpace() error {
usedPctile, err := GetUsedSpace(s.BlobsDir)
if err != nil {
return err
}
if usedPctile >= 0.90 && !s.SkipSpaceCheck {
return errors.Err(fmt.Sprintf("more than 90%% of the space has been used. use --skip-space-check to ignore. Used: %.1f%%", usedPctile*100))
}
log.Infof("disk usage: %.1f%%", usedPctile*100)
return nil
}
// GetUsedSpace returns a value between 0 and 1, with 0 being completely empty and 1 being full, for the disk that holds the provided path
func GetUsedSpace(path string) (float32, error) {
var stat syscall.Statfs_t
err := syscall.Statfs(path, &stat)
if err != nil {
return 0, err
}
// Available blocks * size per block = available space in bytes
all := stat.Blocks * uint64(stat.Bsize)
free := stat.Bfree * uint64(stat.Bsize)
used := all - free
return float32(used) / float32(all), nil
}