javascript - How to force a gulp task to wait until local function returns its result from a HTTP request? -


this shouldn't hard deal with, want regular callback method halt gulp task within executing, because http request inside of it.

gulp.task('html', function() { var params = {     apikey: '*****',     spaceid: '******',     opts:{         filter: '*****',         level: 3     } }; return $.remotesrc(languages, {     base: 'https://api',     qs: {         index: 'id',         fallback: 'en',         key: '****'     } })     .on('error', onerror) //here following function should wait result   secondfunction, avaible after gulp task finishes execution     .pipe($.foreach(function(stream, file) {         var data = json.parse(string(file.contents));         data.lang = file.path.match(/([^\/]+)(?=\.\w+$)/)[0];         params.locale = _.keys( _.pick(languagekeys, data.lang)) + _.values(_.pick(languagekeys, data.lang));        result = secondfunction(params);           return gulp.src(dist + '*.html')             .pipe($.template(data)).on('error', onerror)             .pipe(gulp.dest(dist + path.basename(file.path, '.json')));     })); });  var secondfunction = function (params) {     return  contentfuldata (params,  function (err, result) {         if(!err) {             //do             console.log('first'+ result);             // console.log(result);             return result;         }     
    }); };

stacktrace

the solution use promises , split task execution main task , dependency task, problem requests contentful not resolved before control passed on pipe($.template(data))

generating tempaltes before response came api, using array of promises resolved before merging content , generating templates solved it

    gulp.task('html',['contentful-faq'], function() {      promise.all(contentfulpromises).then(function (result) { //did result here                   }         }     });      return $.remotesrc(languages, {         base: 'https://api/path',         qs: {             index: 'id',             fallback: 'en',             key: 'abc123'         }     })         .on('error', onerror)         .pipe($.foreach(function(stream, file) {             var data = json.parse(string(file.contents));             data.lang = file.path.match(/([^\/]+)(?=\.\w+$)/)[0];              data.faq = _.merge(data.faq, contentfulresult[data.lang+languagekeys[data.lang]]);             return gulp.src(dist + '*.html')                 .pipe($.template(data))                 .on('error', onerror)                 .pipe($.if(isproduction, $.htmlmin({                     collapsewhitespace: true,                     conservativecollapse: true,                     removecomments: true,                     useshortdoctype: true,                     collapsebooleanattributes: true,                     removeredundantattributes: true,                     removeemptyattributes: true,                     minifyjs: true,                     minifycss: true                 })))                 .pipe(gulp.dest(dist + path.basename(file.path, '.json')));         })); });  //get faq contenful var contentfulpromises = []; gulp.task('contentful-faq', function (cb) {     var = this;     var params = {         apikey: 'xxxxxxxxx',         spaceid: 'abc123',         opts: {             filter: 'abc123',             level: 3,             order: 'fields.order'         }     };     var getcontenful = function (params) {         (var lang in languagekeys) {             params.locale = _.keys(_.pick(languagekeys, lang)) + _.values(_.pick(languagekeys, lang));             contentfulpromises.push(new promise(function (resolve, reject) {                 contentfuldata(params, function (err, result) {                     resolve(result);                 });             }));         }         promise.all(contentfulpromises)             .then(function (results) {             that.emit('end');         })             .then(function (err) {                 cb(err);             });     }(params); }).on('end', function (results) { });

Comments

Post a Comment

Popular posts from this blog

inversion of control - Autofac named registration constructor injection -

does autofac support specifying registration name in components' constructors? example: ninject's namedattribute . you need use autofac.extras.attributed package on top achieve this so let's have 1 interface , 2 classes: public interface ihello { string sayhello(); } public class englishhello : ihello { public string sayhello() { return "hello"; } } public class frenchhello : ihello { public string sayhello() { return "bonjour"; } } then have consumer class, in want select instance injected: public class helloconsumer { private readonly ihello helloservice; public helloconsumer([withkey("en")] ihello helloservice) { if (helloservice == null) { throw new argumentnullexception("helloservice"); } this.helloservice = helloservice; } public string sayhello() { return this.helloservice.sayhello()...
Read more

verilog - Systemverilog dynamic casting issues -

i've code snippet following in testbench function void write_to_port( my_data_type_base data ); my_data_type_extended data_ext; if(!$cast(data_ext, data)); `uvm_error(get_type_name(), "failed cast"); `uvm_info(get_name(), $psprintf("data_ext :\n%s", data_ext.sprint()), uvm_medium) // write data_ext out port.... endfunction when run it, i'm getting uvm_error "failed cast." i'm not quire sure why $cast not returning 1. can see, i'm printing out extended class data item after casting uvm_info. can see it's being cast properly. if don't use $cast if condition, don't runtime error. isn't coding practice use if dynamic cast check if $cast returning 1 ? what might reason behind cast not returning 1 in above case? i think semicolon on line 'if' not belong? i think consumes if statement, , uvm_error executes regardless of how if evaluates: if(!$cast(data_ext, data)); <- no semico...
Read more

ios - Change Storyboard View using Seague -

i have following code checks connection server, , depending on want change views if no connection found. nsstring *connect = [nsstring stringwithcontentsofurl:[nsurl urlwithstring:@"http://myserver.com"] encoding:nsutf8stringencoding error:nil]; if (connect == null) { [self performseguewithidentifier:@"network_failure" sender:self]; } else { // other code here } my problem not change views. have added storyboard segue between 2 views identifier of network_failure . not have navigation controller or that, problem? thanks help! no not problem. first of all, in objectivec exists nil object oriented null . must use that. so: if(connect == nil) or better: if(!connect) so due fact nil not same of null , probably code does't enter in if scope . you have been able discover breakpoint. anyway: be sure set trigger segue (line) 2 view controller , , name network_failure (that not best name. should instead view1toview2 ) as, m...
Read more