func getCaches(u utils.Utils, caches *sliceCache) error {
if caches == nil || len(*caches) < 1 {
return nil
}
items := make([]utils.MemoryItem, len(*caches))
for index, cache := range *caches {
items[index] = utils.MemoryItem{Key: getCacheKey(cache)}
}
if err := u.MemoryGet(&items); err != nil {
u.Errorf("u.MemoryGet(%d) error %v", len(items), err)
return err
}
for index, item := range items {
parts := strings.Split(item.Value, ";")
if count, err := strconv.ParseInt(parts[0], 10, 64); err == nil {
(*caches)[index].Count = count
}
if len(parts) >= 2 {
// value with expire timestamp
if exp, expErr := strconv.ParseInt(parts[1], 10, 64); expErr == nil {
(*caches)[index].TtlLeft = exp - time.Now().Unix()
}
}
utils.Verbosef(u, "services.getCaches caches[%d] = %v", index, &(*caches)[index])
}
return nil
}
func googleLegacy(u utils.Utils, url string) result {
start := time.Now()
var res result
urlJson, err := json.Marshal(url)
if err != nil {
res.Error = err
return res
}
// http://bradsknutson.com/blog/get-google-share-count-url/
body := `[{"method":"pos.plusones.get","id":"p","params":{"nolog":true,"id":` + string(urlJson) + `,"source":"widget","userId":"@viewer","groupId":"@self"},"jsonrpc":"2.0","key":"p","apiVersion":"v1"}]`
req, err := http.NewRequest("POST", "https://clients6.google.com/rpc", bytes.NewBufferString(body))
if err != nil {
res.Error = err
return res
}
utils.Verbosef(u, "Calling http.Client.Do(body=%s)", body)
req.Header.Set("Content-Type", "application/json")
resp, err := u.HttpClient().Do(req)
if err != nil {
res.Error = err
return res
}
defer resp.Body.Close()
respBody, err := ioutil.ReadAll(resp.Body)
if err != nil {
res.Error = err
return res
}
res.Response = respBody
u.Debugf("googleLegacy(url=%s) took %s", url, time.Since(start))
jsonparser.ArrayEach(respBody, func(element []byte, _ jsonparser.ValueType, _ int, err error) {
if err != nil {
res.Error = err
return
}
if count, err := jsonparser.GetFloat(element, "result", "metadata", "globalCounts", "count"); err != nil {
res.Error = err
return
} else {
res.Count = int64(count)
}
})
return res
}
func buildRequests(u utils.Utils, data *MapUrlServiceCount, handleNoValueOnly bool) MapServiceRequest {
utils.Verbosef(u, "services.buildRequests(%s, %s)", data, handleNoValueOnly)
requests := make(MapServiceRequest)
caches := make(sliceCache, 0)
for url, services := range *data {
for service, count := range services {
if handleNoValueOnly && count != COUNT_NO_VALUE {
continue
}
worker, ok := workers[service]
if !ok {
u.Errorf("services.buildRequests: Unrecognized service %s", service)
continue
}
// temporary mark the cached count as fresh to avoid other process
// also trying to refresh it, we will take care of it later
temporaryCount := count
if temporaryCount == COUNT_NO_VALUE {
temporaryCount = COUNT_INITIAL_VALUE
}
caches = append(caches, cache{Service: service, Url: url, Count: temporaryCount})
if req, ok := requests[service]; ok {
req.Urls = append(req.Urls, url)
requests[service] = req
} else {
var newReq request
newReq.Service = service
newReq.Worker = worker
newReq.Urls = []string{url}
newReq.Results = make(MapUrlResult)
requests[service] = newReq
}
}
}
setCaches(u, &caches)
return requests
}
func facebookWorker(u utils.Utils, req *request) {
start := time.Now()
urls := strings.Join(req.Urls, ",")
url := prepareFbGraphUrl(u, urls)
utils.Verbosef(u, "Calling http.Client.Get(%s)", url)
resp, err := u.HttpClient().Get(url)
if err != nil {
req.Error = err
return
}
defer resp.Body.Close()
respBody, err := ioutil.ReadAll(resp.Body)
if err != nil {
req.Error = err
return
}
req.Response = respBody
u.Debugf("facebookWorker(urls=%s) took %s", urls, time.Since(start))
for _, url := range req.Urls {
var res result
if respUrl, _, _, err := jsonparser.Get(respBody, url); err != nil {
res.Error = err
res.Response = respBody
} else {
res.Response = respUrl
if shareCount, err := jsonparser.GetInt(respUrl, "share", "share_count"); err != nil {
// it's alright, for new urls Facebook does not return share.share_count at all
res.Count = COUNT_INITIAL_VALUE
} else {
res.Count = shareCount
}
}
req.Results[url] = res
}
return
}
func twitterLegacy(u utils.Utils, url string) result {
var res result
start := time.Now()
oscUrl := "http://opensharecount.com/count.json?url=" + neturl.QueryEscape(url)
utils.Verbosef(u, "Calling http.Client.Get(%s)", oscUrl)
resp, err := u.HttpClient().Get(oscUrl)
if err != nil {
res.Error = err
return res
}
defer resp.Body.Close()
respBody, err := ioutil.ReadAll(resp.Body)
if err != nil {
res.Error = err
return res
}
res.Response = respBody
u.Debugf("twitterLegacy(url=%s) took %s", url, time.Since(start))
if count, err := jsonparser.GetInt(respBody, "count"); err != nil {
res.Error = err
return res
} else {
if count == 0 {
if oscError, err := jsonparser.GetString(respBody, "error"); err != nil {
res.Error = errors.New(oscError)
return res
}
}
res.Count = count
}
return res
}
func executeRequests(u utils.Utils, requests *MapServiceRequest, data *MapUrlServiceCount) {
utils.Verbosef(u, "services.executeRequests(%s)", requests)
if len(*requests) < 1 {
return
}
var wg sync.WaitGroup
var cacheWg sync.WaitGroup
cacheCh := make(chan cache, 1)
caches := make(sliceCache, 0)
var historyWg sync.WaitGroup
historyTime := time.Now()
historyCh := make(chan utils.HistoryRecord, 1)
histories := make([]utils.HistoryRecord, 0)
wg.Add(len(*requests))
for _, req := range *requests {
go func(req request) {
defer wg.Done()
req.Worker(u, &req)
if req.Error != nil {
u.Errorf("services.%s: %v", req.Service, req.Error)
}
for url, res := range req.Results {
oldCount, _ := (*data)[url][req.Service]
(*data)[url][req.Service] = res.Count
if res.Error != nil {
u.Errorf("services.%s: %s error %v response %s", req.Service, url, res.Error, res.Response)
} else {
if res.Count > COUNT_INITIAL_VALUE && res.Count > oldCount {
cacheWg.Add(1)
cacheCh <- cache{Service: req.Service, Url: url, Count: res.Count}
historyWg.Add(1)
historyCh <- utils.HistoryRecord{Service: req.Service, Url: url, Count: res.Count, Time: historyTime}
}
}
}
}(req)
}
go func() {
for cache := range cacheCh {
caches = append(caches, cache)
cacheWg.Done()
}
}()
go func() {
for history := range historyCh {
histories = append(histories, history)
historyWg.Done()
}
}()
wg.Wait()
cacheWg.Wait()
historyWg.Wait()
setCaches(u, &caches)
if err := u.HistorySave(&histories); err != nil {
u.Errorf("u.HistorySave error %v", err)
}
}
