Synnefo

// Copyright 2013 GRNET S.A. All rights reserved.

// 

// Redistribution and use in source and binary forms, with or

// without modification, are permitted provided that the following

// conditions are met:

// 

//   1. Redistributions of source code must retain the above

//      copyright notice, this list of conditions and the following

//      disclaimer.

// 

//   2. Redistributions in binary form must reproduce the above

//      copyright notice, this list of conditions and the following

//      disclaimer in the documentation and/or other materials

//      provided with the distribution.

// 

// THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS

// OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR

// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF

// USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED

// AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN

// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

// POSSIBILITY OF SUCH DAMAGE.

// 

// The views and conclusions contained in the software and

// documentation are those of the authors and should not be

// interpreted as representing official policies, either expressed

// or implied, of GRNET S.A.

// 

;(function(root){

    // root

    var root = root;

    // setup namepsaces

    var snf = root.synnefo = root.synnefo || {};

    var models = snf.models = snf.models || {}

    var storage = snf.storage = snf.storage || {};

    var ui = snf.ui = snf.ui || {};

    var util = snf.util = snf.util || {};

    var views = snf.views = snf.views || {}

    // shortcuts

    var bb = root.Backbone;

    views.FlavorOptionsView = views.View.extend({

        choices_meta: {

            'cpu': {title: 'CPUs', description: 'Choose number of CPU cores'},

            'ram': {title: 'Memory size', description: 'Choose memory size'},

            'disk': {title: 'Disk size', description: 'Choose disk size'},

            'disk_template': {title: 'Storage', description: 'Select storage type'}

        },

        initialize: function(options) {

            views.FlavorOptionsView.__super__.initialize.apply(this);

            _.bindAll(this);

            this.$el = $(this.el);

            this.flavors = options.flavors || synnefo.storage.flavors.active();

            this.collection = options.collection || synnefo.storage.flavors;

            this.choices = options.choices || ['cpu', 'ram', 'disk', 

                                               'disk_template'];

            this.hidden_choices = options.hidden_choices || [];

            this.quotas = options.quotas || synnefo.storage.quotas;

            this.selected_flavor = options.selected_flavor || undefined;

            this.extra_quotas = options.extra_quotas || undefined;

            this.render();

            if (this.selected_flavor) { this.set_flavor(this.selected_flavor)}

        },

        render: function() {

            this.$el.empty();

            this.each_choice(function(choice) {

                var el = this[choice + '_el'] = $("<div>");

                el.addClass("flavor-options clearfix");

                el.addClass(choice);

                var title = $("<h4 class='clearfix'><span class='title'>" + 

                              "</span><span class='available'></span>" +

                              "<span class='desc'></span></h4>");

                el.append(title);

                el.find("span.title").text(this.choices_meta[choice].title);

                el.find("span.desc").text(this.choices_meta[choice].description);

                var ul = $("<ul/>");

                ul.addClass("flavors-"+choice+"-list flavor-opts-list clearfix");

                el.append(ul);

                this.$el.append(el);

                if (this.hidden_choices.indexOf(choice) > -1) {

                    el.hide();

                }

            });

            this.update_quota_left();

            this.fill();

            this.set_unavailable();

            this.init_handlers();

        },

        get_current: function(choice, value) {

          var found = false;

          _.each(this.flavors, _.bind(function(f){

              if (found) { return }

              if (f.get(choice) == value) {

                  found = true;

                  to_select = f;

              }

          }, this));

        },

        init_handlers: function() {

            this.$el.on('click', 'li.choice', _.bind(function(e) {

                var el = $(e.target).closest('li');

                var choice = el.data('type');

                var value = el.data('value');

                var to_select = this.selected_flavor;

                if (to_select) {

                    var attrs = _.clone(to_select.attributes);

                    attrs[choice] = value;

                    to_select = this.collection.get_flavor(attrs.cpu, attrs.ram, 

                                                           attrs.disk, 

                                                           attrs.disk_template);

                }

                if (!to_select) {

                  to_select = this.get_current(choice, value);

                }

                this.set_flavor(to_select);

            }, this));

        },

        update_quota_left: function() {

            this.each_choice(function(choice){

                var el = this[choice + '_el'].find(".available");

                el.removeClass("error");

                var quota = this.quotas.get('cyclades.'+choice);

                if (!quota) { return }

                var type = choice;

                var active = true;

                var key = 'available';

                var quotas = synnefo.storage.quotas;

                var available_dsp = quotas.get('cyclades.'+type).get_readable(key, active);

                var available = quotas.get('cyclades.'+type).get(key);

                var content = "({0} left)".format(available_dsp);

                if (available <= 0) { content = "(None left)"; el.addClass("error") }

                el.text(content);

            });

        },

        metric_for_choice: function(choice) {

            var map = {ram:'MB', cpu:'X', disk:'GB', disk_template:''};

            return map[choice] || '';

        },

        set_unavailable: function() {

            this.$el.find("li.choice").removeClass("disabled");

            var quotas = this.quotas.get_available_for_vm({'active': true});

            var extra_quotas = this.extra_quotas;

            var user_excluded = storage.flavors.unavailable_values_for_quotas(

              quotas, 

              storage.flavors.active(), extra_quotas);

            _.each(user_excluded, _.bind(function(values, key) {

                _.each(values, _.bind(function(value) {

                    var choice_el = this.select_choice(key, value);

                    choice_el.addClass("disabled").removeClass("selected");

                }, this));

            }, this));

        },

        select_choice: function(key, value) {

            return this.$el.find(".choice[data-type="+key+"][data-value="+value+"]");

        },

        fill: function(flavors) {

            var flavors = flavors || this.flavors;

            var data = this.collection.get_data(flavors);

            this.each_choice(function(choice) {

                var el = this[choice + '_el'].find("ul");

                el.empty();

                var key = choice;

                if (key == 'ram') { key = 'mem'}

                var values = data[key];

                if (!values) { return }

                _.each(values, _.bind(function(value) {

                    var entry = $("<li class='choice choice-" + choice + "' " +

                                  "data-value=" + value +

                                  " data-type=" + choice + ">" +

                                  "<span class='value'></span>" +

                                  "<span class='metric'></span></li>");

                    entry.find(".value").text(value);

                    entry.find(".metric").text(this.metric_for_choice(choice));

                    el.append(entry);

                    el.attr('value', value);

                }, this));

            });

        },

        set_flavor: function(flavor) {

            this.$el.find("li").removeClass("selected");

            if (!flavor) {this.selected_flavor = undefined; return}

            var no_select = false;

            var self = this;

            this.each_choice(function(choice){

                var el = this[choice + '_el'];

                var choice = el.find('.choice-'+choice+'[data-value='+flavor.get(choice)+']');

                choice.addClass("selected");

            });

            this.selected_flavor = flavor;

            this.trigger("flavor:select", this.selected_flavor);

            return this.selected_flavor;

        },

        each_choice: function(f) {

            return _.each(this.choices, _.bind(f, this));

        }

    });

    views.VmResizeView = views.Overlay.extend({

        view_id: "vm_resize_view",

        content_selector: "#vm-resize-overlay-content",

        css_class: 'overlay-vm-resize overlay-info',

        overlay_id: "vm-resize-overlay",

        subtitle: "",

        title: "Resize Machine",

        initialize: function(options) {

            this.flavors_view = undefined; 

            views.VmResizeView.__super__.initialize.apply(this);

            _.bindAll(this);

            this.submit = this.$(".form-action.resize");

            this.shutdown = this.$(".form-action.shutdown");

            this.pre_init_handlers();

            this.handle_shutdown_complete = _.bind(this.handle_shutdown_complete, this);

        },

        pre_init_handlers: function() {

            this.submit.click(_.bind(function(){

                if (this.submit.hasClass("disabled")) {

                    return;

                };

                this.submit_resize(this.flavors_view.selected_flavor);

            }, this));

            this.shutdown.click(_.bind(this.handle_shutdown, this));

        },

        handle_shutdown: function() {

          if (this.shutdown.hasClass("in-progress") || 

              this.shutdown.hasClass("disabled")) {

            return;

          }

          this.shutdown.addClass("in-progress");

          this.vm.unbind("change:status", this.handle_shutdown_complete);

          this.vm.bind("change:status", this.handle_shutdown_complete);

          var self = this;

          this.vm.call("shutdown", undefined, function() {

            self.shutdown.removeClass("in-progress");

            self.update_layout();

            self.hide();

          });

        },

        handle_shutdown_complete: function(vm) {

          if (!vm.is_active()) {

            this.shutdown.removeClass("in-progress");

            this.vm.unbind("change:status", this.handle_shutdown_complete);

          }

        },

        submit_resize: function(flv) {

            if (this.submit.hasClass("in-progress")) { return }

            this.submit.addClass("in-progress");

            var complete = _.bind(function() {

              this.vm.set({'flavor': flv});

              this.vm.set({'flavorRef': flv.id});

              this.hide();

            }, this);

            this.vm.call("resize", complete, complete, {flavor:flv.id});

        },

        show_with_warning: function(vm) {

          this.show(vm);

          this.start_warning.show();

        },

        show: function(vm) {

            this.start_warning = this.$(".warning.start").hide();

            this.start_warning.hide();

            this.submit.removeClass("in-progress");

            this.vm = vm;

            this.vm.bind("change", this.handle_vm_change);

            if (this.flavors_view) {

                this.flavors_view.remove();

            }

            this.warning = this.$(".warning.shutdown");

            this.warning.hide();

            this.submit.show();

            this.shutdown.removeClass("in-progress");

            this.$(".flavor-options-inner-cont").append("<div>");

            var extra_quota = this.vm.get_flavor_quotas();

            if (!this.vm.is_active()) {

              extra_quota = undefined;

            }

            this.flavors_view = new snf.views.FlavorOptionsView({

                flavors:this.vm.get_resize_flavors(),

                el: this.$(".flavor-options-inner-cont div"),

                hidden_choices:['disk', 'disk_template'],

                selected_flavor: this.vm.get_flavor(),

                extra_quotas: extra_quota

            });

            this.flavors_view.bind("flavor:select", this.handle_flavor_select)

            this.submit.addClass("disabled");

            views.VmResizeView.__super__.show.apply(this);

        },

        handle_flavor_select: function(flv) {

            this.selected_flavor = flv;

            if (!flv || (flv.id == this.vm.get_flavor().id)) {

                this.submit.addClass("disabled");

                if (!this.shutdown.hasClass("in-progress")) {

                  this.shutdown.addClass("disabled");

                }

            } else {

                if (this.vm.can_resize()) {

                  this.submit.removeClass("disabled");

                } else {

                  this.shutdown.removeClass("disabled hidden");

                  this.warning.show();

                }

            }

            if (flv && !this.vm.can_start(flv, true)) {

              if (!this.vm.is_active()) {

                this.start_warning.show();

              }

            } else {

              this.start_warning.hide();

            }

            this.update_vm_status();

        },

        update_vm_status: function() {

          if (this.vm.get("status") == "STOPPED") {

            this.warning.hide();

          }

          if (this.vm.get("status") == "SHUTDOWN") {

            this.shutdown.addClass("in-progress").removeClass("disabled");

            this.warning.hide();

          }

        },

        beforeOpen: function() {

            this.update_layout();

            this.init_handlers();

        },

        update_layout: function() {

            this.update_actions();

            this.update_vm_details();

            this.render_choices();

            this.update_vm_status();

        },

        update_actions: function() {

          if (!this.vm.can_resize()) {

            this.shutdown.show();

            this.warning.show();

            this.shutdown.removeClass("disabled");

            if (this.selected_flavor) {

              this.handle_flavor_select(this.selected_flavor);

            } else {

              if (!this.shutdown.hasClass("in-progress")) {

                this.shutdown.addClass("disabled");

              }

            }

            this.submit.addClass("disabled");

          } else {

            if (this.selected_flavor) {

              this.submit.removeClass("disabled");

            }

            this.shutdown.hide();

          }

        },

        render_choices: function() {

        },

        update_vm_details: function() {

            var name = _.escape(util.truncate(this.vm.get("name"), 70));

            this.set_subtitle(name + snf.ui.helpers.vm_icon_tag(this.vm, "small"));

        },

        handle_vm_change: function() {

          this.update_layout();

        },

        init_handlers: function() {

        },

        onClose: function() {

            this.editing = false;

            this.vm.unbind("change", this.handle_vm_change);

            this.vm.unbind("change:status", this.handle_shutdown_complete);

            this.vm = undefined;

        }

    });

})(this);