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