planetlab/slices/leases.js

   1 /* need to put some place else in CSS ? */
   2
   3 // space for the nodenames
   4 var x_nodelabel = 200;
   5 // right space after the nodename - removed from the above
   6 var x_sep=20;
   7 // height for the (two) rows of timelabels
   8 var y_header = 12;
   9 // space between nodes
  10 var y_sep = 10;
  11
  12 // 1-grain leases attributes
  13 // x_grain is configurable from $_GET
  14 //var x_grain = 20;
  15 var y_node = 15;
  16 var radius= 6;
  17
  18 var anim_delay=350;
  19
  20 /* decorations / headers */
  21 /* note: looks like the 'font' attr is not effective... */
  22
  23 // vertical rules
  24 var attr_rules={'fill':"#888", 'stroke-dasharray':'- ', 'stroke-width':0.5};
  25 // set font-size separately in here rather than depend on the height
  26 var txt_timelabel = {"font": 'Times, "Trebuchet MS", Verdana, Arial, Helvetica, sans-serif',
  27                      stroke: "none", fill: "#008", 'font-size': 9};
  28 var txt_allnodes = {"font": '"Trebuchet MS", Verdana, Arial, Helvetica, sans-serif', stroke: "none", fill: "#404"};
  29 var txt_nodelabel = {"font": '"Trebuchet MS", Verdana, Arial, Helvetica, sans-serif', stroke: "none", fill: "#008"};
  30
  31 var attr_timebutton = {'fill':'#bbf', 'stroke': '#338','stroke-width':1,
  32                        'stroke-linecap':'round', 'stroke-linejoin':'miter', 'stroke-miterlimit':3};
  33 var attr_daymarker = {'stroke':'#000','stroke-width':2};
  34 var attr_half_daymarker = {'stroke':'#444','stroke-width':2};
  35
  36 /* lease dimensions and colors */
  37 /* refrain from using gradient color, seems to not be animated properly */
  38 /* lease was originally free and is still free */
  39 var attr_lease_free_free={'fill':"#def", 'stroke-width':0.5, 'stroke-dasharray':''};
  40 /* lease was originally free and is now set for our usage */
  41 var attr_lease_free_mine={'fill':"green", 'stroke-width':1, 'stroke-dasharray':'-..'};
  42 /* was mine and is still mine */
  43 var attr_lease_mine_mine={'fill':"#beb", 'stroke-width':0.5, 'stroke-dasharray':''};
  44 /* was mine and is about to be released */
  45 var attr_lease_mine_free={'fill':"white", 'stroke-width':1, 'stroke-dasharray':'-..'};
  46 var attr_lease_other={'fill':"#f88"};
  47
  48 /* other slices name */
  49 var txt_otherslice = {"font": '"Trebuchet MS", Verdana, Arial, Helvetica, sans-serif', stroke: "none", fill: "#444",
  50                       "font-size": 12 };
  51
  52 ////////////////////////////////////////////////////////////
  53 // the scheduler object
  54 function Scheduler (sliceid, slicename, x_grain, axisx, axisy, data) {
  55
  56     // the data contains slice names, and lease_id, we need this to find our own leases (mine)
  57     this.sliceid=sliceid;
  58     this.slicename=slicename;
  59     this.axisx=axisx;
  60     this.axisy=axisy;
  61     this.data=data;
  62
  63     this.x_grain = parseInt(x_grain);
  64     // the path for the triangle-shaped buttons
  65     this.timebutton_path="M1,0L"+(this.x_grain-1)+",0L"+(this.x_grain/2)+","+y_header+"L1,0";
  66
  67     // utilities to keep track of all the leases
  68     this.leases=[];
  69     this.append_lease = function (lease) {
  70         this.leases.push(lease);
  71     }
  72
  73     // how many time slots
  74     this.nb_grains = function () { return axisx.length;}
  75
  76     this.init = function (canvas_id) {
  77         this.total_width = x_nodelabel + this.nb_grains()*this.x_grain;
  78         this.total_height =   2*y_header /* the timelabels */
  79                             + 2*y_sep    /* extra space */
  80                             + y_node     /* all-nodes & timebuttons row */
  81                             + (this.axisy.length)*(y_node+y_sep);  /* the regular nodes and preceding space */
  82         paper = Raphael (canvas_id, this.total_width+x_sep, this.total_height);
  83
  84         // maintain the list of nodelabels for the 'all nodes' button
  85         this.nodelabels=[];
  86
  87         ////////// create the time slots legend
  88         var top=0;
  89         var left=x_nodelabel;
  90
  91         var daymarker_height= 2*y_header+2*y_sep + (axisy.length+1)*(y_node+y_sep);
  92         var daymarker_path="M0,0L0," + daymarker_height;
  93
  94         var half_daymarker_off= 2*y_header+y_sep;
  95         var half_daymarker_path="M0," + half_daymarker_off + "L0," + daymarker_height;
  96
  97         var col=0;
  98         for (var i=0, len=axisx.length; i < len; ++i) {
  99             // pick the printable part
 100             var timelabel=axisx[i][1];
 101             var y = top+y_header;
 102             if (col%2 == 0) y += y_header;
 103             col +=1;
 104             // display time label
 105             var timelabel=paper.text(left,y,timelabel).attr(txt_timelabel)
 106                 .attr({"text-anchor":"middle"});
 107             // draw vertical line
 108             var path_spec="M"+left+" "+(y+y_header/2)+"L"+left+" "+this.total_height;
 109             var rule=paper.path(path_spec).attr(attr_rules);
 110             // show a day marker when relevant
 111             var timestamp=parseInt(axisx[i][0]);
 112             if ( (timestamp%(24*3600))==0) {
 113                 paper.path(daymarker_path).attr({'translation':left+','+top}).attr(attr_daymarker);
 114             } else if ( (timestamp%(12*3600))==0) {
 115                 paper.path(half_daymarker_path).attr({'translation':left+','+top}).attr(attr_daymarker);
 116             }
 117             left+=(this.x_grain);
 118         }
 119
 120         ////////// the row with the timeslot buttons (the one labeled 'All nodes')
 121         this.granularity=axisx[1][0]-axisx[0][0];
 122
 123         // move two lines down
 124         top += 2*y_header+2*y_sep;
 125         left=x_nodelabel;
 126         // all nodes buttons
 127         var allnodes = paper.text (x_nodelabel-x_sep,top+y_node/2,"All nodes").attr(txt_allnodes)
 128                 .attr ({"font-size":y_node, "text-anchor":"end","baseline":"bottom"});
 129         allnodes.scheduler=this;
 130         allnodes.click(allnodes_methods.click);
 131         // timeslot buttons
 132         for (var i=0, len=axisx.length; i < len; ++i) {
 133             var timebutton=paper.path(this.timebutton_path).attr({'translation':left+','+top}).attr(attr_timebutton);
 134             timebutton.from_time=axisx[i][0];
 135             timebutton.scheduler=this;
 136             timebutton.click(timebutton_methods.click);
 137             left+=(this.x_grain);
 138         }
 139
 140         //////// the body of the scheduler : loop on nodes
 141         top += y_node+y_sep;
 142         var data_index=0;
 143         for (var i=0, len=axisy.length; i<len; ++i) {
 144             nodename=axisy[i];
 145             left=0;
 146             var nodelabel = paper.text(x_nodelabel-x_sep,top+y_node/2,nodename).attr(txt_nodelabel)
 147                 .attr ({"font-size":y_node, "text-anchor":"end","baseline":"bottom"});
 148             nodelabel_methods.selected(nodelabel,1);
 149             nodelabel.click(nodelabel_methods.click);
 150             this.nodelabels.push(nodelabel);
 151
 152             left += x_nodelabel;
 153             var grain=0;
 154             while (grain < this.nb_grains()) {
 155                 lease_id=data[data_index][0];
 156                 slicename=data[data_index][1];
 157                 duration=data[data_index][2];
 158                 var lease=paper.rect (left,top,this.x_grain*duration,y_node,radius);
 159                 lease.lease_id=lease_id;
 160                 lease.nodename=nodename;
 161                 lease.nodelabel=nodelabel;
 162                 if (slicename == "") {
 163                     lease.initial="free";
 164                     lease_methods.init_free(lease);
 165                 } else if (slicename == this.slicename) {
 166                     lease.initial="mine";
 167                     lease_methods.init_mine(lease);
 168                 } else {
 169                     lease_initial="other";
 170                     lease_methods.init_other(lease,slicename);
 171                 }
 172                 lease.from_time = axisx[grain%this.nb_grains()][0];
 173                 grain += duration;
 174                 lease.until_time = axisx[grain%this.nb_grains()][0];
 175                 // record scheduler in lease
 176                 lease.scheduler=this;
 177                 // and vice versa
 178                 this.append_lease(lease);
 179                 // move on with the loop
 180                 left += this.x_grain*duration;
 181                 data_index +=1;
 182             }
 183             top += y_node + y_sep;
 184         };
 185     }
 186
 187     this.submit = function () {
 188         document.body.style.cursor = "wait";
 189         var actions=new Array();
 190         for (var i=0, len=this.leases.length; i<len; ++i) {
 191             var lease=this.leases[i];
 192             if (lease.current != lease.initial) {
 193                 var from_time=lease.from_time;
 194                 var until_time=lease.until_time;
 195                 /* scan the leases just after this one and merge if appropriate */
 196                 var j=i+1;
 197                 while (j<len && lease_methods.compare (lease, until_time, this.leases[j])) {
 198 //                  window.console.log('merged index='+j);
 199                     until_time=this.leases[j].until_time;
 200                     ++j; ++i;
 201                 }
 202                 if (lease.current!='free') { // lease to add
 203                     actions.push(new Array('add-leases',
 204                                            new Array(lease.nodename),
 205                                            this.slicename,
 206                                            from_time,
 207                                            until_time));
 208                 } else { // lease to delete
 209                     actions.push(new Array ('delete-leases',
 210                                             lease.lease_id));
 211                 }
 212             }
 213         }
 214         sliceid=this.sliceid;
 215         // once we're done with the side-effect performed in actions.php, we need to refresh this view
 216         redirect = function (sliceid) {
 217             window.location = '/db/slices/slice.php?id=' + sliceid + '&show_details=0&show_nodes=1&show_nodes_resa=1';
 218         }
 219         // Ajax.Request comes with prototype
 220         var ajax=new Ajax.Request('/planetlab/common/actions.php',
 221                                   {method:'post',
 222                                    parameters:{'action':'manage-leases',
 223                                                'actions':actions.toJSON()},
 224                                    onSuccess: function(transport) {
 225                                        var response = transport.responseText || "no response text";
 226                                        document.body.style.cursor = "default";
 227                                        alert("Server answered:\n\n" + response + "\n\nPress OK to refresh page");
 228                                        redirect(sliceid);
 229                                    },
 230                                    onFailure: function(){
 231                                        document.body.style.cursor = "default";
 232                                        alert("Could not reach server, sorry...\n\nPress OK to refresh page");
 233                                        // not too sure what to do here ...
 234                                        redirect(sliceid);
 235                                    },
 236                                   });
 237     }
 238
 239     this.clear = function () {
 240         for (var i=0, len=this.leases.length; i<len; ++i) {
 241             var lease=this.leases[i];
 242             if (lease.current != lease.initial) {
 243                 if (lease.initial == 'free') lease_methods.init_free(lease,lease_methods.click_mine);
 244                 else                         lease_methods.init_mine(lease,lease_methods.click_free);
 245             }
 246         }
 247     }
 248
 249 } // end Scheduler
 250
 251 //////////////////////////////////////// couldn't find how to inhererit from the raphael objects...
 252
 253 //////////////////// the 'all nodes' button
 254 var allnodes_methods = {
 255     click: function (event) {
 256         var scheduler=this.scheduler;
 257         /* decide what to do */
 258         var unselected=0;
 259         for (var i=0, len=scheduler.nodelabels.length; i<len; ++i)
 260             if (! scheduler.nodelabels[i].selected) unselected++;
 261         /* if at least one is not selected : select all */
 262         var new_state = (unselected >0) ? 1 : 0;
 263         for (var i=0, len=scheduler.nodelabels.length; i<len; ++i)
 264             nodelabel_methods.selected(scheduler.nodelabels[i],new_state);
 265     }
 266 }
 267
 268 //////////////////// the buttons for managing the whole timeslot
 269 var timebutton_methods = {
 270
 271     /* clicking */
 272     click: function (event) {
 273         var scheduler = this.scheduler;
 274         var from_time = this.from_time;
 275         var until_time = from_time + scheduler.granularity;
 276         /* scan leases on selected nodes, store in two arrays */
 277         var relevant_free=[], relevant_mine=[];
 278         for (var i=0,len=scheduler.leases.length; i<len; ++i) {
 279             var scan=scheduler.leases[i];
 280             if ( ! scan.nodelabel.selected) continue;
 281             // overlap ?
 282             if (scan.from_time<=from_time && scan.until_time>=until_time) {
 283                 if (scan.current == "free")       relevant_free.push(scan);
 284                 else if (scan.current == "mine")  relevant_mine.push(scan);
 285             }
 286         }
 287 //      window.console.log("Found " + relevant_free.length + " free and " + relevant_mine.length + " mine");
 288         /* decide what to do, whether book or release */
 289         if (relevant_mine.length==0 && relevant_free.length==0) {
 290             alert ("Nothing to do in this timeslot on the selected nodes");
 291             return;
 292         }
 293         // if at least one is free, let's book
 294         if (relevant_free.length > 0) {
 295             for (var i=0, len=relevant_free.length; i<len; ++i) {
 296                 var lease=relevant_free[i];
 297                 lease_methods.init_mine(lease,lease_methods.click_free);
 298             }
 299         // otherwise we unselect
 300         } else {
 301             for (var i=0, len=relevant_mine.length; i<len; ++i) {
 302                 var lease=relevant_mine[i];
 303                 lease_methods.init_free(lease,lease_methods.click_mine);
 304             }
 305         }
 306     }
 307 }
 308
 309 //////////////////// the nodelabel buttons
 310 var nodelabel_methods = {
 311
 312     // set selected mode and render visually
 313     selected: function (nodelabel, flag) {
 314         nodelabel.selected=flag;
 315         nodelabel.attr({'font-weight': (flag ? 'bold' : 'normal')});
 316     },
 317
 318     // toggle selected
 319     click: function (event) {
 320         nodelabel_methods.selected( this, ! this.selected );
 321     }
 322 }
 323
 324
 325 //////////////////// the lease buttons
 326 var lease_methods = {
 327
 328     /* in the process of merging leases before posting to the API */
 329     compare: function (lease, until_time, next_lease) {
 330         return (next_lease['nodename'] == lease['nodename'] &&
 331                 next_lease['from_time'] == until_time &&
 332                 next_lease['initial'] == lease['initial'] &&
 333                 next_lease['current'] == lease['current']);
 334     },
 335
 336     init_free: function (lease, unclick) {
 337         lease.current="free";
 338         // set color
 339         lease.animate((lease.initial=="free") ? attr_lease_free_free : attr_lease_mine_free,anim_delay);
 340         // keep track of the current status
 341         // record action
 342         lease.click (lease_methods.click_free);
 343         if (unclick) lease.unclick(unclick);
 344     },
 345
 346     // find out all the currently free leases that overlap this one
 347     click_free: function (event) {
 348         var scheduler = this.scheduler;
 349         lease_methods.init_mine(this,lease_methods.click_free);
 350     },
 351
 352     init_mine: function (lease, unclick) {
 353         lease.current="mine";
 354         lease.animate((lease.initial=="mine") ? attr_lease_mine_mine : attr_lease_free_mine,anim_delay);
 355         lease.click (lease_methods.click_mine);
 356         if (unclick) lease.unclick(unclick);
 357     },
 358
 359     click_mine: function (event) {
 360         var scheduler = this.scheduler;
 361         // this lease was originally free but is now marked for booking
 362         // we free just this lease
 363         lease_methods.init_free(this, lease_methods.click_mine);
 364     },
 365
 366
 367     init_other: function (lease, slicename) {
 368         lease.animate (attr_lease_other,anim_delay);
 369         /* a text obj to display the name of the slice that owns that lease */
 370         var otherslicelabel = paper.text (lease.attr("x")+lease.attr("width")/2,
 371                                           // xxx
 372                                           lease.attr("y")+lease.attr("height")/2,slicename).attr(txt_otherslice);
 373         /* hide it right away */
 374         otherslicelabel.hide();
 375         /* record it */
 376         lease.label=otherslicelabel;
 377         lease.hover ( function (e) { this.label.toFront(); this.label.show(); },
 378                       function (e) { this.label.hide(); } );
 379     },
 380 }
 381
 382 function init_scheduler () {
 383     // Grab the data
 384     var data = [], axisx = [], axisy = [];
 385     var table = $$("table#leases_data")[0];
 386     // no reservable nodes - no data
 387     if ( ! table) return;
 388     // upper-left cell : sliceid & slicename & x_grain
 389     var slice_attributes = getInnerText(table.getElementsBySelector("thead>tr>td")[0]).split('&');
 390     var sliceid=slice_attributes[0];
 391     var slicename=slice_attributes[1];
 392     var x_grain=slice_attributes[2];
 393     // the nodelabels
 394     table.getElementsBySelector("tbody>tr>th").each(function (cell) {
 395         axisy.push(getInnerText(cell));
 396     });
 397     // the timeslot labels
 398     table.getElementsBySelector("thead>tr>th").each(function (cell) {
 399         /* [0]: timestamp -- [1]: displayable*/
 400         axisx.push(getInnerText(cell).split("&"));
 401     });
 402     // leases - expect colspan to describe length in grains
 403     // the text contents is expected to be lease_id & slicename
 404     table.getElementsBySelector("tbody>tr>td").each(function (cell) {
 405         var cell_data;
 406         slice_attributes=getInnerText(cell).split('&');
 407         // booked leases come with lease id and slice name
 408         if (slice_attributes.length == 2) {
 409             // leases is booked : slice_id, slice_name, duration in grains
 410             cell_data=new Array (slice_attributes[0], slice_attributes[1], cell.colSpan);
 411         } else {
 412             cell_data = new Array ('','',cell.colSpan);
 413         }
 414         data.push(cell_data);
 415     });
 416     var scheduler = new Scheduler (sliceid,slicename, x_grain, axisx, axisy, data);
 417     table.hide();
 418     // leases_area is a <div> created by slice.php as a placeholder
 419     scheduler.init ("leases_area");
 420
 421     var submit=$$("button#leases_submit")[0];
 422     submit.onclick = function () { scheduler.submit(); }
 423     var clear=$$("button#leases_clear")[0];
 424     clear.onclick = function () { scheduler.clear(); }
 425
 426 }
 427
 428 Event.observe(window, 'load', init_scheduler);