Synnefo

// Copyright 2011 GRNET S.A. All rights reserved.

// 

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// 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,

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

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

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// 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;

    var hasKey = Object.prototype.hasOwnProperty;

    views.SingleDetailsView = views.VMDetailsView.extend({

        view_id: "vm_details_single",

        el_sel: '.machine-details',

        selectors: {

            'cpu': '.machine-detail.cpus',

            'ram': '.machine-detail.ram',

            'disk': '.machine-detail.disk',

            'image_name': '.machine-detail.image-name',

            'image_size': '.machine-detail.image-size'

        }

    })

    // VMs single view

    views.SingleView = views.VMListView.extend({

        // view id (this could be used to identify 

        // the view object from global context

        view_id: 'vm_single',

        el: '#machinesview-single',

        id_tpl: 'single-vm-',

        link_id_tpl: 'single-vm-at-',

        hide_actions: false,

        selectors: {

            'vms': '.single-container',

            'vm': '#single-vm-',

            'view': '#machinesview-single',

            'tpl': '.single-container-template',

            'spinner': '.large-spinner',

            'vm_spinner': '#single-vm-{0} .state .spinner',

            'vm_wave': '#single-vm-{0} img.wave',

            'vm_cont_active': '#machinesview-single',

            'vm_cont_terminated': '#machinesview-single'

        },

        initialize: function() {

            this.current_vm = 0;

            // button selectors

            this.prev_button = this.$(".controls .previous");

            this.next_button = this.$(".controls .next");

            this.menu = $("#single-servers-list");

            views.SingleView.__super__.initialize.apply(this, arguments);

            this.update_current_vm();

        },

        // overload show function

        show: function() {

            views.SingleView.__super__.show.apply(this, arguments);

            this.log.debug("showing");

            this.$(".column3").show();

            this.show_vm_menu();

            this.show_current();

        },

        show_vm: function(vm) {

            if (!vm) { return };

            this.current_vm_instance = vm;

            this.show_vm_menu();

            this.show_current();

            this.update_layout();

        },

        // identify vm model instance id based on DOM element

        vm_id_for_element: function(el) {

            return el.attr('id').replace("single-vm-", "");

        },

        // set generic view handlers

        set_handlers: function() {

            this.prev_button.click(_.bind(function(ev){

                storage.vms.reset_pending_actions();

                ev.preventDefault();

                this.show_prev();

            }, this));

            this.next_button.click(_.bind(function(ev){

                storage.vms.reset_pending_actions();

                ev.preventDefault();

                this.show_next();

            }, this));

        },  

        update_current_vm: function() {

            try {

                this.current_vm_instance = storage.vms.at(this.current_vm);

                this.current_vm_instance.start_stats_update(true);

                storage.vms.stop_stats_update([this.current_vm_instance]);

            } catch (err) {

                this.log.debug("Cannot select current vm instance for: {0}".format(this.current_vm));

                this.current_vm_instance = undefined;

                this.current_vm = 0;

            }

        },

        show_next: function() {

            this.current_vm++;

            if (this.current_vm >= storage.vms.models.length) {

                this.current_vm = 0;

            }

            this.update_current_vm();

            // this might fail when vms get empty

            // catch the exception

            try {

                snf.router.vm_details_view(this.current_vm_instance.id);

            } catch (err) {};

        },

        show_prev: function() {

            this.current_vm--;

            if (this.current_vm < 0) {

                this.current_vm = storage.vms.length - 1;

            }

            this.update_current_vm();

            snf.router.vm_details_view(this.current_vm_instance.id);

        },

        post_remove_vm: function(vm) {

            // current vm removed or does not exist after an update

            this.show_vm_menu();

            if (!this.current_vm_instance || this.current_vm_instance.id == vm.id) {

                this.current_vm++;

                if (this.current_vm >= storage.vms.models.length) {

                    this.current_vm = 0;

                }

                this.update_current_vm();

                this.show_current();

            // this might fail when vms get empty

            // catch the exception

            } else {

                this.show_current();

            }

        },

        // stuff to do when a new vm has been created.

        // - create vm subviews

        post_add: function(vm) {

            this.vm(vm).removeClass("single-container-template");

            this.show_vm_menu();

            this.show_current();

            // rename views index

            this.stats_views = this.stats_views || {};

            this.connect_views = this.connect_views || {};

            this.tags_views = this.tags_views || {};

            this.details_views = this.details_views || {};

            this.action_views = this.action_views || {};

            this.action_error_views = this.action_error_views || {};

            //this.stats_views[vm.id] = new views.IconStatsView(vm, this);

            // same as icon view

            this.action_views[vm.id] = new views.VMActionsView(vm, this, this.vm(vm), this.hide_actions);

            this.stats_views[vm.id] = new views.VMStatsView(vm, this, {stats_type: 'series'});

            this.connect_views[vm.id] = new views.IconVMConnectView(vm, this);

            this.tags_views[vm.id] = new views.VMTagsView(vm, this, true, 20, 10, 35);

            this.details_views[vm.id] = new views.SingleDetailsView(vm, this);

            this.action_error_views[vm.id] = new views.VMActionErrorView(vm, this);

            if (storage.vms.models.length > 1) { this.vm(vm).hide(); };

        },

        post_update_vm: function(vm) {

        },

        // vm specific event handlers

        set_vm_handlers: function(vm) {

        },

        // handle selected vm

        show_current: function() {

            var index = this.current_vm;

            var vm = storage.vms.at(index);

            this.$(".server-name").removeClass("column3-selected");

            if (vm) {

                this.vm(vm).show();

            };

            _.each(storage.vms.models, function(vmo){

                if (vm && (vm.id != vmo.id)) {

                    if (!hasKey.call(this._vm_els, vmo.id)) { return };

                    this.vm(vmo).hide();

                }

            }, this)

            if (!vm) {

                // empty list

                this.$(".column3").hide();

                return;

            }

            this.$(".column3").show();

            $("#" + this.link_id_tpl + this.current_vm).addClass("column3-selected");

            try {

                this.update_details(vm);

            } catch (err) {};

        },

        show_vm_menu: function() {

            this.menu.find(".server-name").remove();

            _.each(storage.vms.models, function(vm, index) {

                var el = $('<div class="server-name" id="'+this.link_id_tpl + index +'">' + 

                               util.truncate(vm.escape("name"),16)+'</div>')

                this.menu.append(el);

                vm.bind("change:name", function(){

                  el.html(util.truncate(vm.escape("name"), 16));

                })

                if (this.current_vm_instance && vm.id == this.current_vm_instance.id) {

                    this.current_vm = index;

                }

            }, this);

            var self = this;

            this.menu.find(".server-name").click(function(ev) {

                ev.preventDefault();

                var id = $(this).attr("id").replace("single-vm-at-", "");

                if (self.current_vm != id) {

                    storage.vms.reset_pending_actions();

                }

                self.current_vm = id;

                self.update_current_vm();

                snf.router.vm_details_view(self.current_vm_instance.id);

            })

        },

        // generic stuff to do on each view update

        // called once after each vm has been updated

        update_layout: function() {

            this.update_current_vm();

            fix_v6_addresses();

        },

        update_status_message: function(vm) {

            var el = this.vm(vm);

            var message = vm.get_status_message();

            if (message) {

                // update bulding progress

                el.find("div.machine-ips").hide();

                el.find("div.build-progress").show();

                el.find("div.build-progress .message").text(message);

                if (vm.in_error_state()) {

                    el.find("div.build-progress .btn").show();

                } else {

                    el.find("div.build-progress .btn").hide();

                }

            } else {

                // hide building progress

                el.find("div.machine-ips").show()

                el.find("div.build-progress").hide();

                el.find("div.build-progress .btn").hide();

            }

        },

        // update vm details

        update_details: function(vm) {

            var el = this.vm(vm);

            if (vm != this.current_vm_instance) { return };

            // truncate name

            el.find(".machine-detail.name").text(util.truncate(vm.get("name"), 35));

            // set ips

            el.find(".machine-detail.ipv4.ipv4-text").text(vm.get_addresses().ip4 || "not set");

            // TODO: fix ipv6 truncates and tooltip handler

            el.find(".machine-detail.ipv6.ipv6-text").text(vm.get_addresses().ip6 || "not set");

            // set the state (i18n ??)

            el.find(".state-label").text(STATE_TEXTS[vm.state()]);

            // set state class

            el.find(".state").removeClass().addClass(views.SingleView.STATE_CLASSES[vm.state()].join(" "));

            // os icon

            el.find(".single-image").css({'background-image': "url(" + this.get_vm_icon_path(vm, "medium") + ")"});

            el.removeClass("connectable");

            if (vm.is_connectable()) {

                el.addClass("connectable");

            }

            this.update_status_message(vm);

            icon_state = vm.is_active() ? "on" : "off";

            set_machine_os_image(el, "single", icon_state, this.get_vm_icon_os(vm));

            // update subviews

            this.action_views[vm.id].update_layout();

            this.stats_views[vm.id].update_layout();

            this.connect_views[vm.id].update_layout();

            this.tags_views[vm.id].update_layout();

            this.details_views[vm.id].update_layout();

        },

        get_vm_icon_os: function(vm) {

            var os = vm.get_os();

            var icons = window.os_icons || views.SingleView.VM_OS_ICONS;

            if (icons.indexOf(os) == -1) {

                os = "unknown";

            }

            return os;

        },

        // TODO: move to views.utils (the method and the VM_OS_ICON vars)

        get_vm_icon_path: function(vm, icon_type) {

            var os = vm.get_os();

            var icons = window.os_icons || views.SingleView.VM_OS_ICONS;

            if (icons.indexOf(os) == -1) {

                os = "unknown";

            }

            return views.SingleView.VM_OS_ICON_TPLS()[icon_type].format(os);

        }

    })

    views.SingleView.VM_OS_ICON_TPLS = function() {

        return {

            "medium": snf.config.machines_icons_url + "large/{0}-sprite.png"

        }

    }

    views.SingleView.VM_OS_ICONS = window.os_icons || [];

    views.SingleView.STATE_CLASSES = {

        'UNKNOWN':          ['state', 'error-state'],

        'BUILD':            ['state', 'build-state'],

        'REBOOT':           ['state', 'rebooting-state'],

        'STOPPED':          ['state', 'terminated-state'],

        'ACTIVE':           ['state', 'running-state'],

        'ERROR':            ['state', 'error-state'],

        'DELETED':          ['state', 'destroying-state'],

        'DESTROY':          ['state', 'destroying-state'],

        'SHUTDOWN':         ['state', 'shutting-state'],

        'START':            ['state', 'starting-state'],

        'CONNECT':          ['state', 'connecting-state'],

        'DISCONNECT':       ['state', 'disconnecting-state'],

        'RESIZE':           ['state', 'rebooting-state']

    };

})(this);