nopaque/vre_www/website/js/vre_manager_rest.js

var VREMANAGER = "http://" + window.location.hostname + ":5000";


/**
 * Sends an asynchronous HTTP request to the vre manager in order to create a
 * new job.
 * @param {File} file - The file to process with the job.
 * @param {string} language - The language of the file contents.
 * @param {string} name - A name for the job, this doesn't have to be unique.
 * @param {string} service - The service this job belongs to.
 * @param {string} user - The user this job belongs to.
 * @param {function} [callback] - A function, that is called after the HTTP
 * request finished.
 */
function createJob(file, language, name, service, user, callback = console.log) {
  var formData;
  var oReq;
  var query;

  formData = new FormData();
  formData.append("file", file);

  oReq = new XMLHttpRequest();
  oReq.addEventListener("loadend", function(oEvent) {
    if (this.status === 201) {
      M.toast({html: "Auftrag '" + name + "' wurde erstellt."});
      callback(JSON.parse(this.responseText));
    } else {
      if (this.status === 415) {
        M.toast({html: "Auftrag '" + name + "' konnte nicht erstellt werden.<br>(Unerwarteter Dateityp)"});
      } else {
        M.toast({html: "Auftrag '" + name + "' konnte nicht erstellt werden.<br>(Fehlercode: " + this.status + ")"});
      }
    }
  });

  query = "?language=" + language + "&name=" + name + "&service=" + service + "&user=" + user;

  oReq.open("POST", VREMANAGER + "/vre/jobs" + query);
  oReq.send(formData);
}


/**
 * Sends an asynchronous HTTP request to the vre manager in order to delete an
 * existing job.
 * @param {string} id - The id of the job to be deleted.
 * @param {function} [callback] - A function, that is called after the HTTP
 * request finished.
 */
function deleteJob(id, callback = console.log) {
  var oReq;

  oReq = new XMLHttpRequest();
  oReq.addEventListener("loadend", function(oEvent) {
    if (this.status === 204) {
      M.toast({html: "Auftrag '" + id + "' wurde gelöscht."});
      callback();
    } else {
      M.toast({html: "Auftrag '" + id + "' konnte nicht gelöscht werden.<br>(Fehlercode: " + this.status + ")"});
    }
  });

  oReq.open("DELETE", VREMANAGER + "/vre/jobs/" + id);
  oReq.send();
}


/**
 * Sends an asynchronous HTTP request to the vre manager in order to get all
 * informations about a specific and existing job.
 * @param {string} id - The id of the job to get the information from.
 * @param {function} [callback] - A function, that is called after the HTTP
 * request finished.
 */
function getJob(id, callback = console.log) {
  var oReq;

  oReq = new XMLHttpRequest();
  oReq.addEventListener("loadend", function(oEvent) {
    if (this.status === 200) {
      callback(JSON.parse(this.responseText));
    }
  });

  oReq.open("GET", VREMANAGER + "/vre/jobs/" + id);
  oReq.send();
}


/**
 * Sends an asynchronous HTTP request to the vre manager in order to get a
 * (filtered) list of all jobs.
 * @param {object} [filters=null] - An object containing filters. E.g.
 * {'service': 'nlp', 'status': 'finished'}
 * @param {function} [callback] - A function, that is called after the HTTP
 * request finished.
 */
function getJobs(filters = null, callback = console.log) {
  var oReq;
  var query;

  oReq = new XMLHttpRequest();
  oReq.addEventListener("loadend", function(oEvent) {
    if (this.status === 200) {
      callback(JSON.parse(this.responseText));
    }
  });

  query = ""
  if (filters) {
    if (filters["name"]) {
      query += (query === "") ? "?" : "&";
      query += "name=" + filters["name"];
    }
    if (filters["service"]) {
      query += (query === "") ? "?" : "&";
      query += "service=" + filters["service"];
    }
    if (filters["status"]) {
      query += (query === "") ? "?" : "&";
      query += "status=" + filters["status"];
    }
    if (filters["user"]) {
      query += (query === "") ? "?" : "&";
      query += "user=" + filters["user"];
    }
  }

  oReq.open("GET", VREMANAGER + "/vre/jobs" + query);
  oReq.send();
}


/**
 * Sends an asynchronous HTTP request to the vre manager in order to update the
 * values of a specific and existing job.
 * @param {string} id - The id of the job to update.
 * @param {object} [newValues=null] - An object containing the new values. E.g.
 * {'status': 'finished'}
 * @param {function} [callback] - A function, that is called after the HTTP
 * request finished.
 */
function updateJob(id, newValues = null, callback = console.log) {
  var oReq;
  var query;

  oReq = new XMLHttpRequest();
  oReq.addEventListener("loadend", function(oEvent) {
    if (this.status === 200) {
      M.toast({html: "Auftrag '" + id + "' wurde aktualisiert."});
      callback(JSON.parse(this.responseText));
    } else {
      M.toast({html: "Auftrag '" + id + "' konnte nicht aktualisiert werden.<br>(Fehlercode: " + this.status + ")"});
    }
  });

  query = ""
  if (newValues) {
    if (newValues["name"]) {
      query += (query === "") ? "?" : "&";
      query += "name=" + newValues["name"];
    }
    if (newValues["language"]) {
      query += (query === "") ? "?" : "&";
      query += "language=" + newValues["language"];
    }
    if (newValues["report"]) {
      query += (query === "") ? "?" : "&";
      query += "report=" + newValues["report"];
    }
    if (newValues["status"]) {
      query += (query === "") ? "?" : "&";
      query += "status=" + newValues["status"];
    }
  }

  oReq.open("PUT", VREMANAGER + "/vre/jobs/" + id + query);
  oReq.send();
}