func Test_AsyncAPI_Define_RecursiveCall(t *testing.T) {
assert := gaetest.NewAssert(t)
app := NewApp("testapp")
async := app.AsyncAPI()
var processed = 0
var q1 string
config := async.Define("/async/")
config.OnProcess(AsyncTaskHandler(func(req *wcg.Request, t *models.AsyncAPITask) (*models.AsyncAPITaskProgress, error) {
var progress models.AsyncAPITaskProgress
lastp := t.LastProgress()
if lastp != nil {
progress.Current = lastp.Current + 1
} else {
progress.Current++
}
progress.Total = 4
// confirm progress text is updated.
processed++
if processed == 4 {
q1 = req.Query("q1")
// no progress returns to stop the task
return &progress, nil
}
if processed == 3 {
progress.Next = url.Values{
"q1": []string{"b"},
}
} else {
progress.Next = url.Values{}
}
return &progress, nil
}))
assert.EqStr("api-testapp-async", config.Queue.Name)
var path = "/api/testapp/async/"
var params = url.Values{}
runner := testhelper.NewAsyncTaskTestRunner(t, app.Routes(), ts)
task := runner.Run(fmt.Sprintf("%s", path), params)
assert.OK(models.AsyncAPIStatusSuccess == task.Status)
assert.EqInt(4, len(task.Progress))
assert.EqInt(4, task.LastProgress().Current)
assert.EqInt(4, processed)
assert.EqStr("b", q1)
}
func runTasksCrawlersAmebloEntryLists(req *wcg.Request, task *models.AsyncAPITask) (*models.AsyncAPITaskProgress, error) {
const FollowLinkKey = "fl"
const SettingsKey = "s"
const URLKey = "u"
var query = req.HTTPRequest().URL.Query()
var settingsList []*hplink.CrawlerSettings
var urlList []string
if settingsKeys, ok := query[SettingsKey]; ok {
_, _list := entities.CrawlerSettings.GetMulti().Keys(settingsKeys...).MustList(req)
settingsList = _list.([]*hplink.CrawlerSettings)
} else {
query := entities.CrawlerSettings.Query().Filter("Type=", hplink.CrawlerSettingsTypeAmeblo)
if pagination := query.MustExecute(req); pagination.Length() > 0 {
list := pagination.Data.([]hplink.CrawlerSettings)
settingsList = make([]*hplink.CrawlerSettings, len(list))
for i := range list {
settingsList[i] = &list[i]
}
}
}
var numList = len(settingsList)
urlList = make([]string, numList)
if urls, ok := query[URLKey]; ok {
if numList != len(urls) {
return nil, fmt.Errorf("List mismatch - found %d settings but %d urls are specified", numList, len(urls))
}
urlList = query[URLKey]
} else {
for i := range settingsList {
urlList[i] = (*hplink.AmebloCrawlerSettings)(settingsList[i]).GetEntryListURL()
}
}
startTime := lib.Now()
nextParamSettingsKeys := make([]string, numList)
nextParamURLs := make([]string, numList)
err := iterator.ParallelSlice(settingsList, func(i int, v *hplink.CrawlerSettings) error {
next, err := _crawlAmebloEntryList(req, v, urlList[i])
if err != nil {
settingsList[i].Error = []byte(fmt.Sprintf("%v", err))
settingsList[i].Status = hplink.CrawlerStatusFailure
settingsList[i].LastRun = lib.Now()
return err
}
settingsList[i].Error = nil
settingsList[i].Status = hplink.CrawlerStatusSuccess
settingsList[i].LastRun = lib.Now()
if next != "" {
nextParamSettingsKeys[i] = v.URL
nextParamURLs[i] = next
}
return nil
})
entities.CrawlerSettings.PutMulti().MustUpdate(req, settingsList)
if err != nil {
return nil, err
}
if req.Query(FollowLinkKey) != "true" {
return nil, err
}
// fl=true make a recursive call to follow next links
// reduce empty urls from nextParam* and return it for recursive call
var fixedNextParamSettingsKeys []string
var fixedNextParamURLs []string
var hasNext = false
for i := range nextParamURLs {
if nextParamURLs[i] != "" {
hasNext = true
fixedNextParamSettingsKeys = append(fixedNextParamSettingsKeys, nextParamSettingsKeys[i])
fixedNextParamURLs = append(fixedNextParamURLs, nextParamURLs[i])
}
}
var progress models.AsyncAPITaskProgress
var lastProgress = task.LastProgress()
if lastProgress == nil {
progress.Current = len(urlList)
progress.Total = 0
} else {
progress.Current = lastProgress.Current + len(urlList)
}
if hasNext {
progress.Next = url.Values{
FollowLinkKey: []string{"true"},
SettingsKey: fixedNextParamSettingsKeys,
URLKey: fixedNextParamURLs,
}
wait := configs.GetIntValue(req, "hplink.ameblo_crawler_url_wait", 2, 0, 10)
lib.WaitAndEnsureAfter(startTime, time.Duration(wait)*time.Second)
}
req.Logger.Infof("No more URL needs to be crawled.")
return &progress, nil
}