planetlab/slices/leases.js

   1 /* need to put some place else in CSS ? */
   2
   3
   4 /* decorations / headers */
   5
   6 var txt_nodename = {"font": '"Trebuchet MS", Verdana, Arial, Helvetica, sans-serif', stroke: "none", fill: "#008"};
   7 var txt_timeslot = {"font": '"Trebuchet MS", Verdana, Arial, Helvetica, sans-serif', stroke: "none", fill: "#008"};
   8 var attr_rules={'fill':"#888", 'stroke-dasharray':'- ', 'stroke-width':0.5};
   9 var x_nodename = 200;
  10 var x_sep=10;
  11 var y_header = 12
  12 var y_sep = 20
  13
  14 /* lease dimensions and colors */
  15 var anim_delay=500;
  16 var x_grain = 24;
  17 var y_node = 15;
  18 var radius= 6;
  19 /* lease was originally free and is still free */
  20 var attr_lease_free_free={'fill':"#def", 'stroke-width':0.5, 'stroke-dasharray':''};
  21 /* lease was originally free and is now set for our usage */
  22 var attr_lease_free_mine={'fill':"green", 'stroke-width':1, 'stroke-dasharray':'-..'};
  23 /* was mine and is still mine */
  24 var attr_lease_mine_mine={'fill':"#beb", 'stroke-width':0.5, 'stroke-dasharray':''};
  25 /* was mine and is about to be released */
  26 var attr_lease_mine_free={'fill':"white", 'stroke-width':1, 'stroke-dasharray':'-..'};
  27 // refrained from using gradient color, was not animated properly
  28 // var color_lease_mine_free="0-#fff-#def:50-#fff";
  29 var attr_lease_other={'fill':"#f88"};
  30
  31 /* other slices name */
  32 var txt_slice = {"font": '"Trebuchet MS", Verdana, Arial, Helvetica, sans-serif', stroke: "none", fill: "#444",
  33                  "font-size": 15 };
  34
  35 ////////////////////////////////////////////////////////////
  36 // the scheduler object
  37 function Scheduler (slicename, axisx, axisy, data) {
  38
  39     this.slicename=slicename;
  40     this.axisx=axisx;
  41     this.axisy=axisy;
  42     this.data=data;
  43
  44     // utilities to keep track of all the leases
  45     this.leases=[];
  46     this.append_lease = function (lease) {
  47         this.leases.push(lease);
  48     }
  49
  50     // how many time slots
  51     this.nb_grains = function () { return axisx.length;}
  52
  53     this.init = function (id) {
  54         this.total_width = x_nodename + this.nb_grains()*x_grain;
  55         this.total_height = 2*y_header + this.axisy.length*(y_node+y_sep);
  56         paper = Raphael (id, this.total_width, this.total_height);
  57
  58         // create the time slots legend
  59         var top=0;
  60         var left=x_nodename;
  61
  62         var col=0;
  63         for (var i=0, len=axisx.length; i < len; ++i) {
  64             // pick the printable part
  65             timeslot=axisx[i][1];
  66             var y = top+y_header;
  67             if (col%2 == 0) y += y_header;
  68             col +=1;
  69             var timelabel=paper.text(left,y,timeslot).attr(txt_timeslot)
  70                 .attr({"font-size":y_header, "text-anchor":"middle"});
  71             var path_spec="M"+left+" "+(y+y_header/2)+"L"+left+" "+this.total_height;
  72             var rule=paper.path(path_spec).attr(attr_rules);
  73             left+=x_grain;
  74         }
  75
  76         // move to the lines below:
  77         top += 2*y_header+y_sep;
  78
  79         var data_index=0;
  80         for (var i=0, len=axisy.length; i<len; ++i) {
  81             node=axisy[i];
  82             left=0;
  83             var nodelabel = paper.text(x_nodename-x_sep,top+y_node/2,node).attr(txt_nodename)
  84                 .attr ({"font-size":y_node, "text-anchor":"end","baseline":"bottom"});
  85
  86             left += x_nodename;
  87             var grain=0;
  88             while (grain < this.nb_grains()) {
  89                 slicename=data[data_index][0];
  90                 duration=data[data_index][1];
  91                 var lease=paper.rect (left,top,x_grain*duration,y_node,radius);
  92                 lease.nodename=node;
  93                 if (slicename == "") {
  94                     lease.initial="free";
  95                     lease_methods.init_free(lease);
  96                 } else if (slicename == this.slicename) {
  97                     lease.initial="mine";
  98                     lease_methods.init_mine(lease);
  99                 } else {
 100                     lease_initial="other";
 101                     lease_methods.init_other(lease,slicename);
 102                 }
 103                 lease.from_time = axisx[grain%this.nb_grains()][0];
 104                 grain += duration;
 105                 lease.until_time = axisx[grain%this.nb_grains()][0];
 106                 // record scheduler in lease
 107                 lease.scheduler=this;
 108                 // and vice versa
 109                 this.append_lease(lease);
 110                 // move on with the loop
 111                 left += x_grain*duration;
 112                 data_index +=1;
 113             }
 114             top += y_node + y_sep;
 115         };
 116     }
 117
 118     this.submit = function () {
 119         for (var i=0, len=this.leases.length; i<len; ++i) {
 120             var lease=this.leases[i];
 121             if (lease.current != lease.initial) {
 122                 var method=(lease.current=='free') ? 'DeleteLeases' : 'AddLeases';
 123                 window.console.log(method + "(" +
 124                                    "[" + lease.nodename + "]," +
 125                                    this.slicename + "," +
 126                                    lease.from_time + "," +
 127                                    lease.until_time + ')');
 128             }
 129         }
 130     }
 131
 132     this.clear = function () {
 133         for (var i=0, len=this.leases.length; i<len; ++i) {
 134             var lease=this.leases[i];
 135             if (lease.current != lease.initial) {
 136                 if (lease.initial == 'free') lease_methods.init_free(lease,lease_methods.click_mine);
 137                 else                         lease_methods.init_mine(lease,lease_methods.click_free);
 138             }
 139         }
 140     }
 141
 142
 143 } // Scheduler
 144
 145 //////////////////////////////////////// couldn't find how to inhererit from the raphael objects...
 146 var lease_methods = {
 147
 148     init_free: function (lease, unclick) {
 149         lease.current="free";
 150         // set color
 151         lease.animate((lease.initial=="free") ? attr_lease_free_free : attr_lease_mine_free,anim_delay);
 152         // keep track of the current status
 153         // record action
 154         lease.click (lease_methods.click_free);
 155         if (unclick) lease.unclick(unclick);
 156     },
 157
 158     // find out all the currently free leases that overlap this one
 159     click_free: function (event) {
 160         var scheduler = this.scheduler;
 161         for (var i=0, len=scheduler.leases.length; i<len; ++i) {
 162             scan=scheduler.leases[i];
 163             // overlap ?
 164             if (scan.from_time<=this.from_time && scan.until_time>=this.until_time) {
 165                 if (scan.current == "free") lease_methods.init_mine(scan,lease_methods.click_free);
 166                 // the other ones just remain as they are
 167             }
 168         }
 169     },
 170
 171     init_mine: function (lease, unclick) {
 172         lease.current="mine";
 173         lease.animate((lease.initial=="mine") ? attr_lease_mine_mine : attr_lease_free_mine,anim_delay);
 174         lease.click (lease_methods.click_mine);
 175         if (unclick) lease.unclick(unclick);
 176     },
 177
 178     click_mine: function (event) {
 179         // this lease was originally free but is now marked for booking
 180         // we free just this lease
 181         if (this.initial=="free")
 182             lease_methods.init_free(this, lease_methods.click_mine);
 183         // this lease if ours, same for now
 184         else
 185             lease_methods.init_free(this, lease_methods.click_mine);
 186     },
 187
 188
 189     init_other: function (lease, slicename) {
 190         lease.animate (attr_lease_other,anim_delay);
 191         /* a text obj to display the name of the slice that owns that lease */
 192         var slicelabel = paper.text (lease.attr("x")+lease.attr("width")/2,
 193                                      lease.attr("y")+lease.attr("height")/2,slicename).attr(txt_slice);
 194         /* hide it right away */
 195         slicelabel.hide();
 196         /* record it */
 197         lease.label=slicelabel;
 198         lease.hover ( function (e) { this.label.toFront(); this.label.show(); },
 199                       function (e) { this.label.hide(); } );
 200     },
 201 }
 202
 203 function init_scheduler () {
 204     // Grab the data
 205     var data = [], axisx = [], axisy = [];
 206     var table = $$("table#leases_data")[0];
 207     // no reservable nodes - no data
 208     if ( ! table) return;
 209     // the nodenames
 210     table.getElementsBySelector("tbody>tr>th").each(function (cell) {
 211         axisy.push(getInnerText(cell));
 212     });
 213     // the timeslot labels
 214     table.getElementsBySelector("thead>tr>th").each(function (cell) {
 215         /* [0]: timestamp -- [1]: displayable*/
 216         axisx.push(getInnerText(cell).split("&"));
 217     });
 218     // leases - expect colspan to describe length in grains
 219     table.getElementsBySelector("tbody>tr>td").each(function (cell) {
 220         data.push(new Array (getInnerText(cell),cell.colSpan));
 221     });
 222     // slicename : the upper-left cell
 223     var scheduler = new Scheduler (getInnerText(table.getElementsBySelector("thead>tr>td")[0]), axisx, axisy, data);
 224     table.hide();
 225     // leases_area is a <div> created by slice.php as a placeholder
 226     scheduler.init ("leases_area");
 227
 228     var submit=$$("button#leases_submit")[0];
 229     submit.onclick = function () { scheduler.submit(); }
 230     var clear=$$("button#leases_clear")[0];
 231     clear.onclick = function () { scheduler.clear(); }
 232
 233 }
 234
 235 Event.observe(window, 'load', init_scheduler);