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 var x_grain = 20;
  14 var y_node = 15;
  15 var radius= 6;
  16
  17 var anim_delay=500;
  18
  19 /* decorations / headers */
  20
  21 // vertical rules
  22 var attr_rules={'fill':"#888", 'stroke-dasharray':'- ', 'stroke-width':0.5};
  23 // set font-size separately in here rather than depend on the height
  24 var txt_timelabel = {"font": 'Times, "Trebuchet MS", Verdana, Arial, Helvetica, sans-serif',
  25                      stroke: "none", fill: "#008", 'font-size': 9};
  26 var txt_allnodes = {"font": '"Trebuchet MS", Verdana, Arial, Helvetica, sans-serif', stroke: "none", fill: "#404"};
  27 var txt_nodelabel = {"font": '"Trebuchet MS", Verdana, Arial, Helvetica, sans-serif', stroke: "none", fill: "#008"};
  28
  29 var attr_timebutton = {'fill':'#bbf', 'stroke': '#338','stroke-width':2,
  30                        'stroke-linecap':'round', 'stroke-linejoin':'miter', 'stroke-miterlimit':3};
  31 // keep consistent with sizes above - need for something nicer
  32 var timebutton_path = "M1,0L19,0L10,8L1,0";
  33
  34 /* lease dimensions and colors */
  35 /* refrain from using gradient color, seems to not be animated properly */
  36 /* lease was originally free and is still free */
  37 var attr_lease_free_free={'fill':"#def", 'stroke-width':0.5, 'stroke-dasharray':''};
  38 /* lease was originally free and is now set for our usage */
  39 var attr_lease_free_mine={'fill':"green", 'stroke-width':1, 'stroke-dasharray':'-..'};
  40 /* was mine and is still mine */
  41 var attr_lease_mine_mine={'fill':"#beb", 'stroke-width':0.5, 'stroke-dasharray':''};
  42 /* was mine and is about to be released */
  43 var attr_lease_mine_free={'fill':"white", 'stroke-width':1, 'stroke-dasharray':'-..'};
  44 var attr_lease_other={'fill':"#f88"};
  45
  46 /* other slices name */
  47 var txt_otherslice = {"font": '"Trebuchet MS", Verdana, Arial, Helvetica, sans-serif', stroke: "none", fill: "#444",
  48                       "font-size": 12 };
  49
  50 ////////////////////////////////////////////////////////////
  51 // the scheduler object
  52 function Scheduler (sliceid, slicename, axisx, axisy, data) {
  53
  54     // the data contains slice names, and lease_id, we need this to find our own leases (mine)
  55     this.sliceid=sliceid;
  56     this.slicename=slicename;
  57     this.axisx=axisx;
  58     this.axisy=axisy;
  59     this.data=data;
  60
  61     // utilities to keep track of all the leases
  62     this.leases=[];
  63     this.append_lease = function (lease) {
  64         this.leases.push(lease);
  65     }
  66
  67     // how many time slots
  68     this.nb_grains = function () { return axisx.length;}
  69
  70     this.init = function (canvas_id) {
  71         this.total_width = x_nodelabel + this.nb_grains()*x_grain;
  72         this.total_height =   2*y_header /* the timelabels */
  73                             + 2*y_sep    /* extra space */
  74                             + y_node     /* all-nodes & timebuttons row */
  75                             + (this.axisy.length)*(y_node+y_sep);  /* the regular nodes and preceding space */
  76         paper = Raphael (canvas_id, this.total_width+x_sep, this.total_height);
  77
  78         // maintain the list of nodelabels for the 'all nodes' button
  79         this.nodelabels=[];
  80
  81         ////////// create the time slots legend
  82         var top=0;
  83         var left=x_nodelabel;
  84
  85         var col=0;
  86         for (var i=0, len=axisx.length; i < len; ++i) {
  87             // pick the printable part
  88             timelabel=axisx[i][1];
  89             var y = top+y_header;
  90             if (col%2 == 0) y += y_header;
  91             col +=1;
  92             // display time label
  93             var timelabel=paper.text(left,y,timelabel).attr(txt_timelabel)
  94                 .attr({"text-anchor":"middle"});
  95             // draw vertical line
  96             var path_spec="M"+left+" "+(y+y_header/2)+"L"+left+" "+this.total_height;
  97             var rule=paper.path(path_spec).attr(attr_rules);
  98             left+=x_grain;
  99         }
 100
 101         this.granularity=axisx[1][0]-axisx[0][0];
 102
 103         ////////// the row with the timeslot buttons
 104         // move two lines down
 105         top += 2*y_header+2*y_sep;
 106         left=x_nodelabel;
 107         // all nodes buttons
 108         var allnodes = paper.text (x_nodelabel-x_sep,top+y_node/2,"All nodes").attr(txt_allnodes)
 109                 .attr ({"font-size":y_node, "text-anchor":"end","baseline":"bottom"});
 110         allnodes.scheduler=this;
 111         allnodes.click(allnodes_methods.click);
 112         // timeslot buttons
 113         for (var i=0, len=axisx.length; i < len; ++i) {
 114             var timebutton=paper.path(timebutton_path).attr({'translation':left+','+top}).attr(attr_timebutton);
 115             timebutton.from_time=axisx[i][0];
 116             timebutton.scheduler=this;
 117             timebutton.click(timebutton_methods.click);
 118             left+=x_grain;
 119         }
 120
 121         //////// the body of the scheduler : loop on nodes
 122         top += y_node+y_sep;
 123         var data_index=0;
 124         for (var i=0, len=axisy.length; i<len; ++i) {
 125             nodename=axisy[i];
 126             left=0;
 127             var nodelabel = paper.text(x_nodelabel-x_sep,top+y_node/2,nodename).attr(txt_nodelabel)
 128                 .attr ({"font-size":y_node, "text-anchor":"end","baseline":"bottom"});
 129             nodelabel_methods.selected(nodelabel,1);
 130             nodelabel.click(nodelabel_methods.click);
 131             this.nodelabels.push(nodelabel);
 132
 133             left += x_nodelabel;
 134             var grain=0;
 135             while (grain < this.nb_grains()) {
 136                 lease_id=data[data_index][0];
 137                 slicename=data[data_index][1];
 138                 duration=data[data_index][2];
 139                 var lease=paper.rect (left,top,x_grain*duration,y_node,radius);
 140                 lease.lease_id=lease_id;
 141                 lease.nodename=nodename;
 142                 lease.nodelabel=nodelabel;
 143                 if (slicename == "") {
 144                     lease.initial="free";
 145                     lease_methods.init_free(lease);
 146                 } else if (slicename == this.slicename) {
 147                     lease.initial="mine";
 148                     lease_methods.init_mine(lease);
 149                 } else {
 150                     lease_initial="other";
 151                     lease_methods.init_other(lease,slicename);
 152                 }
 153                 lease.from_time = axisx[grain%this.nb_grains()][0];
 154                 grain += duration;
 155                 lease.until_time = axisx[grain%this.nb_grains()][0];
 156                 // record scheduler in lease
 157                 lease.scheduler=this;
 158                 // and vice versa
 159                 this.append_lease(lease);
 160                 // move on with the loop
 161                 left += x_grain*duration;
 162                 data_index +=1;
 163             }
 164             top += y_node + y_sep;
 165         };
 166     }
 167
 168     this.submit = function () {
 169         document.body.style.cursor = "wait";
 170         var actions=new Array();
 171         for (var i=0, len=this.leases.length; i<len; ++i) {
 172             var lease=this.leases[i];
 173             if (lease.current != lease.initial) {
 174                 var from_time=lease.from_time;
 175                 var until_time=lease.until_time;
 176                 /* scan the leases just after this one and merge if appropriate */
 177                 var j=i+1;
 178                 while (j<len && lease_methods.compare (lease, until_time, this.leases[j])) {
 179 //                  window.console.log('merged index='+j);
 180                     until_time=this.leases[j].until_time;
 181                     ++j; ++i;
 182                 }
 183                 if (lease.current!='free') { // lease to add
 184                     actions.push(new Array('add-leases',
 185                                            new Array(lease.nodename),
 186                                            this.slicename,
 187                                            from_time,
 188                                            until_time));
 189                 } else { // lease to delete
 190                     actions.push(new Array ('delete-leases',
 191                                             lease.lease_id));
 192                 }
 193             }
 194         }
 195         sliceid=this.sliceid;
 196         // once we're done with the side-effect performed in actions.php, we need to refresh this view
 197         redirect = function (sliceid) {
 198             window.location = '/db/slices/slice.php?id=' + sliceid + '&show_details=0&show_nodes=1&show_nodes_resa=1';
 199         }
 200         // Ajax.Request comes with prototype
 201         var ajax=new Ajax.Request('/planetlab/common/actions.php',
 202                                   {method:'post',
 203                                    parameters:{'action':'manage-leases',
 204                                                'actions':actions.toJSON()},
 205                                    onSuccess: function(transport) {
 206                                        var response = transport.responseText || "no response text";
 207                                        document.body.style.cursor = "default";
 208                                        alert("Server answered:\n\n" + response + "\n\nPress OK to refresh page");
 209                                        redirect(sliceid);
 210                                    },
 211                                    onFailure: function(){
 212                                        document.body.style.cursor = "default";
 213                                        alert("Could not reach server, sorry...\n\nPress OK to refresh page");
 214                                        // not too sure what to do here ...
 215                                        redirect(sliceid);
 216                                    },
 217                                   });
 218     }
 219
 220     this.clear = function () {
 221         for (var i=0, len=this.leases.length; i<len; ++i) {
 222             var lease=this.leases[i];
 223             if (lease.current != lease.initial) {
 224                 if (lease.initial == 'free') lease_methods.init_free(lease,lease_methods.click_mine);
 225                 else                         lease_methods.init_mine(lease,lease_methods.click_free);
 226             }
 227         }
 228     }
 229
 230 } // end Scheduler
 231
 232 //////////////////////////////////////// couldn't find how to inhererit from the raphael objects...
 233
 234 //////////////////// the 'all nodes' button
 235 var allnodes_methods = {
 236     click: function (event) {
 237         var scheduler=this.scheduler;
 238         /* decide what to do */
 239         var unselected=0;
 240         for (var i=0, len=scheduler.nodelabels.length; i<len; ++i)
 241             if (! scheduler.nodelabels[i].selected) unselected++;
 242         /* if at least one is not selected : select all */
 243         var new_state = (unselected >0) ? 1 : 0;
 244         for (var i=0, len=scheduler.nodelabels.length; i<len; ++i)
 245             nodelabel_methods.selected(scheduler.nodelabels[i],new_state);
 246     }
 247 }
 248
 249 //////////////////// the buttons for managing the whole timeslot
 250 var timebutton_methods = {
 251
 252     /* clicking */
 253     click: function (event) {
 254         var scheduler = this.scheduler;
 255         var from_time = this.from_time;
 256         var until_time = from_time + scheduler.granularity;
 257         /* scan leases on selected nodes, store in two arrays */
 258         var relevant_free=[], relevant_mine=[];
 259         for (var i=0,len=scheduler.leases.length; i<len; ++i) {
 260             var scan=scheduler.leases[i];
 261             if ( ! scan.nodelabel.selected) continue;
 262             // overlap ?
 263             if (scan.from_time<=from_time && scan.until_time>=until_time) {
 264                 if (scan.current == "free")       relevant_free.push(scan);
 265                 else if (scan.current == "mine")  relevant_mine.push(scan);
 266             }
 267         }
 268 //      window.console.log("Found " + relevant_free.length + " free and " + relevant_mine.length + " mine");
 269         /* decide what to do, whether book or release */
 270         if (relevant_mine.length==0 && relevant_free.length==0) {
 271             alert ("Nothing to do in this timeslot on the selected nodes");
 272             return;
 273         }
 274         // if at least one is free, let's book
 275         if (relevant_free.length > 0) {
 276             for (var i=0, len=relevant_free.length; i<len; ++i) {
 277                 var lease=relevant_free[i];
 278                 lease_methods.init_mine(lease,lease_methods.click_free);
 279             }
 280         // otherwise we unselect
 281         } else {
 282             for (var i=0, len=relevant_mine.length; i<len; ++i) {
 283                 var lease=relevant_mine[i];
 284                 lease_methods.init_free(lease,lease_methods.click_mine);
 285             }
 286         }
 287     }
 288 }
 289
 290 //////////////////// the nodelabel buttons
 291 var nodelabel_methods = {
 292
 293     // set selected mode and render visually
 294     selected: function (nodelabel, flag) {
 295         nodelabel.selected=flag;
 296         nodelabel.attr({'font-weight': (flag ? 'bold' : 'normal')});
 297     },
 298
 299     // toggle selected
 300     click: function (event) {
 301         nodelabel_methods.selected( this, ! this.selected );
 302     }
 303 }
 304
 305
 306 //////////////////// the lease buttons
 307 var lease_methods = {
 308
 309     /* in the process of merging leases before posting to the API */
 310     compare: function (lease, until_time, next_lease) {
 311         return (next_lease['nodename'] == lease['nodename'] &&
 312                 next_lease['from_time'] == until_time &&
 313                 next_lease['initial'] == lease['initial'] &&
 314                 next_lease['current'] == lease['current']);
 315     },
 316
 317     init_free: function (lease, unclick) {
 318         lease.current="free";
 319         // set color
 320         lease.animate((lease.initial=="free") ? attr_lease_free_free : attr_lease_mine_free,anim_delay);
 321         // keep track of the current status
 322         // record action
 323         lease.click (lease_methods.click_free);
 324         if (unclick) lease.unclick(unclick);
 325     },
 326
 327     // find out all the currently free leases that overlap this one
 328     click_free: function (event) {
 329         var scheduler = this.scheduler;
 330         lease_methods.init_mine(this,lease_methods.click_free);
 331     },
 332
 333     init_mine: function (lease, unclick) {
 334         lease.current="mine";
 335         lease.animate((lease.initial=="mine") ? attr_lease_mine_mine : attr_lease_free_mine,anim_delay);
 336         lease.click (lease_methods.click_mine);
 337         if (unclick) lease.unclick(unclick);
 338     },
 339
 340     click_mine: function (event) {
 341         var scheduler = this.scheduler;
 342         // this lease was originally free but is now marked for booking
 343         // we free just this lease
 344         lease_methods.init_free(this, lease_methods.click_mine);
 345     },
 346
 347
 348     init_other: function (lease, slicename) {
 349         lease.animate (attr_lease_other,anim_delay);
 350         /* a text obj to display the name of the slice that owns that lease */
 351         var otherslicelabel = paper.text (lease.attr("x")+lease.attr("width")/2,
 352                                           // xxx
 353                                           lease.attr("y")+lease.attr("height")/2,slicename).attr(txt_otherslice);
 354         /* hide it right away */
 355         otherslicelabel.hide();
 356         /* record it */
 357         lease.label=otherslicelabel;
 358         lease.hover ( function (e) { this.label.toFront(); this.label.show(); },
 359                       function (e) { this.label.hide(); } );
 360     },
 361 }
 362
 363 function init_scheduler () {
 364     // Grab the data
 365     var data = [], axisx = [], axisy = [];
 366     var table = $$("table#leases_data")[0];
 367     // no reservable nodes - no data
 368     if ( ! table) return;
 369     // the nodelabels
 370     table.getElementsBySelector("tbody>tr>th").each(function (cell) {
 371         axisy.push(getInnerText(cell));
 372     });
 373     // the timeslot labels
 374     table.getElementsBySelector("thead>tr>th").each(function (cell) {
 375         /* [0]: timestamp -- [1]: displayable*/
 376         axisx.push(getInnerText(cell).split("&"));
 377     });
 378     // leases - expect colspan to describe length in grains
 379     // the text contents is expected to be lease_id & slicename
 380     table.getElementsBySelector("tbody>tr>td").each(function (cell) {
 381         var cell_data;
 382         slice_attributes=getInnerText(cell).split('&');
 383         // booked leases come with lease id and slice name
 384         if (slice_attributes.length == 2) {
 385             // leases is booked : slice_id, slice_name, duration in grains
 386             cell_data=new Array (slice_attributes[0], slice_attributes[1], cell.colSpan);
 387         } else {
 388             cell_data = new Array ('','',cell.colSpan);
 389         }
 390         data.push(cell_data);
 391     });
 392     // sliceid & slicename : the upper-left cell
 393     var slice_attributes = getInnerText(table.getElementsBySelector("thead>tr>td")[0]).split('&');
 394     var sliceid=slice_attributes[0];
 395     var slicename=slice_attributes[1];
 396     var scheduler = new Scheduler (sliceid,slicename, axisx, axisy, data);
 397     table.hide();
 398     // leases_area is a <div> created by slice.php as a placeholder
 399     scheduler.init ("leases_area");
 400
 401     var submit=$$("button#leases_submit")[0];
 402     submit.onclick = function () { scheduler.submit(); }
 403     var clear=$$("button#leases_clear")[0];
 404     clear.onclick = function () { scheduler.clear(); }
 405
 406 }
 407
 408 Event.observe(window, 'load', init_scheduler);