Question

我正在编写的后台作业旨在遍历每个用户，并且每次都执行代码。当我运行它时，它只对11个用户执行，然后停止。似乎没有任何类型的Parse后台作业限制会导致这种情况，因此我不确定它为什么会发生。

下面是通过用户进行迭代的后台作业部分，如果需要该作业的任何其他部分，我很乐意添加它。我在日志中收到此消息：Reached max log messages per request, later messages for this request are truncated.，所以我甚至无法在日志中看到出现了什么问题。

编辑：在解析时检查作业状态时，我看到此错误： enter image description here

代码：

    Parse.Cloud.job("MatchCenterBackground", function(request, status) {
    // ... other code to setup usersQuery ...
  Parse.Cloud.useMasterKey();
  var usersQuery = new Parse.Query(Parse.User);

  return usersQuery.each(function (user) {
    return processUser(user).then(function(eBayResults){
      return matchCenterComparison(user, eBayResults);
    });
  }).then(function() {
    // Set the job's success status
    status.success("MatchCenterBackground completed successfully.");
  }, function(error) {
    // Set the job's error status
    status.error("Got an error " + error.code + " : " + error.message);
  });
});

// process user, return promise
function processUser(user) {
    // ... code to setup per-user query ...
    var matchCenterItem = Parse.Object.extend("matchCenterItem");
    var query = new Parse.Query(matchCenterItem);
    query.equalTo('parent', user);

    // easy way to share multiple arrays
    var shared = {
        promises: [],
        searchTerms: [],
    };

    return query.find().then(function(results) {
        // process results, populate shared data (promises and searchTerms)
    console.log('matchCenterItem query results:' + results);
    if (results.length > 0) {
        console.log('we have entered the matchcenteritem query');

        for (i = 0; i < results.length; i++) {

          console.log('we have also entered the loop inside the matchCenterItem query');
          // later in your loop where you populate promises:
          var searchTerm = results[i].get('searchTerm');
          // add it to the array just like you add the promises:
          shared.searchTerms.push(searchTerm);

          url = 'http://svcs.ebay.com/services/search/FindingService/v1';
          //push function containing criteria for every matchCenterItem into promises array
          shared.promises.push((function() {

            if (results[i].get('itemLocation') == 'US') 
            {
              console.log('americuh!');
              var httpRequestPromise = Parse.Cloud.httpRequest({
                url: url,
                params: {
                  'OPERATION-NAME': 'findItemsByKeywords',
                  'SERVICE-VERSION': '1.12.0',
                  'SECURITY-APPNAME': '*APP ID GOES HERE*',
                  'GLOBAL-ID': 'EBAY-US',
                  'RESPONSE-DATA-FORMAT': 'JSON',
                  'REST-PAYLOAD&sortOrder': 'BestMatch',
                  'paginationInput.entriesPerPage': '3',
                  'outputSelector=AspectHistogram&itemFilter(0).name=Condition&itemFilter(0).value(0)': 'New',
                  'itemFilter(0).value(1)': results[i].get('itemCondition'),
                  'itemFilter(1).name=MaxPrice&itemFilter(1).value': results[i].get('maxPrice'),
                  'itemFilter(1).paramName=Currency&itemFilter(1).paramValue': 'USD',
                  'itemFilter(2).name=MinPrice&itemFilter(2).value': results[i].get('minPrice'),
                  'itemFilter(2).paramName=Currency&itemFilter(2).paramValue': 'USD',
                  'itemFilter(3).name=LocatedIn&itemFilter(3).value': 'US',
                  'itemFilter(4).name=ListingType&itemFilter(4).value': 'FixedPrice',
                  'keywords': results[i].get('searchTerm'),
                }
              });
            } 

            else if (results[i].get('itemLocation') == 'WorldWide') 
            {
              console.log('Mr worlwide!');
              var httpRequestPromise = Parse.Cloud.httpRequest({
                url: url,
                params: {
                  'OPERATION-NAME': 'findItemsByKeywords',
                  'SERVICE-VERSION': '1.12.0',
                  'SECURITY-APPNAME': '*APP ID GOES HERE*',
                  'GLOBAL-ID': 'EBAY-US',
                  'RESPONSE-DATA-FORMAT': 'JSON',
                  'REST-PAYLOAD&sortOrder': 'BestMatch',
                  'paginationInput.entriesPerPage': '3',
                  'outputSelector=AspectHistogram&itemFilter(0).name=Condition&itemFilter(0).value(0)': 'New',
                  'itemFilter(0).value(1)': results[i].get('itemCondition'),
                  'itemFilter(1).name=MaxPrice&itemFilter(1).value': results[i].get('maxPrice'),
                  'itemFilter(1).paramName=Currency&itemFilter(1).paramValue': 'USD',
                  'itemFilter(2).name=MinPrice&itemFilter(2).value': results[i].get('minPrice'),
                  'itemFilter(2).paramName=Currency&itemFilter(2).paramValue': 'USD',
                  'itemFilter(3).name=ListingType&itemFilter(3).value': 'FixedPrice',
                  'keywords': results[i].get('searchTerm'),
                }
              });
            }

            return httpRequestPromise;
          })());
        }
      }

        //buildEbayRequestPromises(results, shared);
    }).then(function() {
        // process promises, return query promise
        return Parse.Promise.when(shared.promises).then(function() {

          // process the results of the promises, returning a query promise
          console.log('were in the when.then of promise');

          var eBayResults = [];
          for (var i = 0; i < arguments.length; i++) {
          var httpResponse = arguments[i];
          // since they're in the same order, this is OK:
          var searchTerm = shared.searchTerms[i];
          // pass it as a param:
          var top3 = buildEbayRequestPromises(httpResponse.text, searchTerm);

          eBayResults.push(top3);

          }

          return eBayResults;
        });
    });
}

// process matchCenterItem results to build eBay promises
function buildEbayRequestPromises(eBayResponseText, shared) {
    // ... code that pushes items into shared.promises and shared.searchTerms ...

  var ebayResponse = JSON.parse(eBayResponseText);
  var matchCenterItems = [];

  //Parses through ebay's response, pushes each individual item and its properties into an array  
  ebayResponse.findItemsByKeywordsResponse.forEach(function(itemByKeywordsResponse) {
    itemByKeywordsResponse.searchResult.forEach(function(result) {
      if (result.item){
        result.item.forEach(function(item) {
          matchCenterItems.push(item);
        });
      }
    });
  });

  var top3Titles = [];
  var top3Prices = [];
  var top3ImgURLS = [];
  var top3ItemURLS = [];

  //where the title, price, and img url are set
  matchCenterItems.forEach(function(item) {
    var title = item.title[0];
    var price = item.sellingStatus[0].convertedCurrentPrice[0].__value__;
    var imgURL = item.galleryURL[0];
    var itemURL = item.viewItemURL[0];

    top3Titles.push(title);
    top3Prices.push(price);
    top3ImgURLS.push(imgURL);
    top3ItemURLS.push(itemURL);
  });

  console.log('about to define top3 value');
  //Top 3 item info for every MatchCenterItem
  var top3 = 
    {
    "Top 3": 
      [
        {
        "Title": top3Titles[0],
        "Price": top3Prices[0],
        "Image URL": top3ImgURLS[0],
        "Item URL": top3ItemURLS[0]
        },

        {
        "Title": top3Titles[1],
        "Price": top3Prices[1],
        "Image URL": top3ImgURLS[1],
        "Item URL": top3ItemURLS[1]
        },

        {
        "Title": top3Titles[2],
        "Price": top3Prices[2],
        "Image URL": top3ImgURLS[2],
        "Item URL": top3ItemURLS[2]
        }
      ]
    };

    return top3;
}

// compare eBayResults to the users MCItems Array in their MComparisonArray object
function matchCenterComparison(parentUser, eBayResults) {   

    console.log('izayak habibi, eBayResults are the following:' + eBayResults);

    var matchCenterComparisonPromise = new Parse.Promise();

    // if the user has MatchCenter items, do this:

    console.log('ando ishal');
    if (eBayResults.length > 0) {
      console.log('yes the ebay results be longer than 0');

      var mComparisonArray = Parse.Object.extend("MComparisonArray");
      var mComparisonQuery = new Parse.Query(mComparisonArray);

      // Query that compares MCItems array contents to eBayResults
      mComparisonQuery.equalTo('parent', parentUser);
      mComparisonQuery.contains('Name', 'MatchCenter');
      mComparisonQuery.containedIn('MCItems', eBayResults);

      console.log('setup query criteria, about to run it');
      mComparisonQuery.find().then(function(results) {
        //No new items                      
        if (results.length > 0) {
          console.log("No new items, you're good to go!");

          //Add user to the "DON'T send push notification" channel
          ////////
          var installationQuery = new Parse.Query(Parse.Installation);
          installationQuery.equalTo('userId', parentUser);

          installationQuery.first().then(function(result) {
            result.set('channels', ["noPush"]);
            result.save();
          });
          ///////
          console.log('done updating channel');
        }

        //New items found
        else if (results.length === 0) {
          console.log('no matching mComparisonArray, lets push some new shit');

          var mComparisonEditQuery = new Parse.Query(mComparisonArray);
          mComparisonEditQuery.contains('Name', 'MatchCenter');
          mComparisonEditQuery.equalTo('parent', parentUser);

          console.log('setup query criteria again, about to run it');

          // Update MComparisonArray with new eBayResults
          mComparisonEditQuery.first().then(function(results) {
            results.set('MCItems', eBayResults);
            results.save();

            console.log('totally just updated the mComparisonArray, NBD');
          }).then(function() {
              ////////
              //Add user to the "send push notification" channel
              var installationQuery = new Parse.Query(Parse.Installation);
              installationQuery.equalTo('userId', parentUser);

              installationQuery.first().then(function(result) {
                result.set('channels', ["yesPush"]);
                result.save();
              });
              ////////
              console.log('done updating channel');

          });
        }  
      }); 
    matchCenterComparisonPromise.resolve(console.log('MatchCenterComparison Suceeded sen!'));
  } else {
    matchCenterComparisonPromise.reject({ message: 'No work done, expression failed' });
  }
  //return matchCenterComparisonPromise;  

}

Answer 1

发现错误，注释掉修复问题的imgurl值，因为该变量不会一直存在，具体取决于用户是否有项目。

if (matchCenterItems.length > 0){

    matchCenterItems.forEach(function(item) {
      var title = item.title[0];
      var price = item.sellingStatus[0].convertedCurrentPrice[0].__value__;
      //var imgURL = item.galleryURL[0];
      var itemURL = item.viewItemURL[0];

      top3Titles.push(title);
      top3Prices.push(price);
      //top3ImgURLS.push(imgURL);
      top3ItemURLS.push(itemURL);
    });

  }
  console.log('about to define top3 value');
  //Top 3 item info for every MatchCenterItem
  var top3 = 
    {
    "Top 3": 
      [
        {
        "Title": top3Titles[0],
        "Price": top3Prices[0],
        //"Image URL": top3ImgURLS[0],
        "Item URL": top3ItemURLS[0]
        },

        {
        "Title": top3Titles[1],
        "Price": top3Prices[1],
        //"Image URL": top3ImgURLS[1],
        "Item URL": top3ItemURLS[1]
        },

        {
        "Title": top3Titles[2],
        "Price": top3Prices[2],
        //"Image URL": top3ImgURLS[2],
        "Item URL": top3ItemURLS[2]
        }
      ]
    };

解析后台作业在11个用户后停止

1 个答案: