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 // w_grain is configurable from $_GET
  14 //var w_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, w_grain) {
  55
  56     // xxx-hacky dunno how to retrieve this object from an ajax callback
  57     Scheduler.scheduler=this;
  58
  59     // the data contains slice names, and lease_id, we need this to find our own leases (mine)
  60     this.sliceid=sliceid;
  61     this.slicename=slicename;
  62     this.paper=null;
  63
  64     this.w_grain = parseInt(w_grain);
  65     // the path for the triangle-shaped buttons
  66     this.timebutton_path="M1,0L"+(this.w_grain-1)+",0L"+(this.w_grain/2)+","+y_header+"L1,0";
  67
  68     // how many time slots
  69     this.nb_grains = function () { return this.axisx.length;}
  70
  71     ////////////////////
  72     // store the result of an ajax request in the leases_data table
  73     this.set_html = function (html_data) {
  74         var table_text = $$("table#leases_data")[0].innerHTML;
  75         $$("table#leases_data")[0].innerHTML=html_data;
  76         table_text = $$("table#leases_data")[0].innerHTML;
  77         return true;
  78     }
  79
  80     ////////////////////
  81     // the names of the hidden fields that hold the input to this class
  82     // are hard-wired for now
  83     this.parse_html = function () {
  84         this.sliceid=getInnerText($$("span#leases_sliceid")[0]).strip();
  85         this.slicename=getInnerText($$("span#leases_slicename")[0]).strip();
  86         this.leases_grain=getInnerText($$("span#leases_grain")[0]).strip();
  87         this.leases_offset=getInnerText($$("span#leases_offset")[0]).strip();
  88         this.leases_slots=getInnerText($$("span#leases_slots")[0]).strip();
  89         this.leases_w=getInnerText($$("span#leases_w")[0]).strip();
  90
  91         var table = $$("table#leases_data")[0];
  92         // no reservable nodes - no data
  93         if ( ! table) return false;
  94         // check for the body too xxx
  95         // the nodelabels
  96         var data = [], axisx = [], axisy = [];
  97         table.getElementsBySelector("tbody>tr>th").each(function (cell) {
  98             axisy.push(getInnerText(cell));
  99         });
 100
 101         // the timeslot labels
 102         table.getElementsBySelector("thead>tr>th").each(function (cell) {
 103             /* [0]: timestamp -- [1]: displayable*/
 104             axisx.push(getInnerText(cell).split("&"));
 105         });
 106
 107         // leases - expect colspan to describe length in grains
 108         // the text contents is expected to be lease_id & slicename
 109         table.getElementsBySelector("tbody>tr>td").each(function (cell) {
 110             var cell_data;
 111             var slice_attributes=getInnerText(cell).split('&');
 112             // booked leases come with lease id and slice name
 113             if (slice_attributes.length == 2) {
 114                 // leases is booked : slice_id, slice_name, duration in grains
 115                 cell_data=new Array (slice_attributes[0], slice_attributes[1], cell.colSpan);
 116             } else {
 117                 cell_data = new Array ('','',cell.colSpan);
 118             }
 119             data.push(cell_data);
 120         });
 121
 122         this.axisx=axisx;
 123         this.axisy=axisy;
 124         this.data=data;
 125         return true;
 126     }
 127
 128     ////////////////////
 129     // draw
 130     this.draw_area = function (canvas_id) {
 131         this.total_width = x_nodelabel + this.nb_grains()*this.w_grain;
 132         this.total_height =   2*y_header /* the timelabels */
 133                             + 2*y_sep    /* extra space */
 134                             + y_node     /* all-nodes & timebuttons row */
 135                             + (this.axisy.length)*(y_node+y_sep);  /* the regular nodes and preceding space */
 136         // reuse for paper if exists with same size, or (re-)create otherwise
 137         var paper;
 138         if (this.paper == null) {
 139             paper = Raphael (canvas_id, this.total_width+x_sep, this.total_height);
 140         } else if (this.paper.width==this.total_width && this.paper.height==this.total_height) {
 141             paper=this.paper;
 142             paper.clear();
 143         } else {
 144             $$("#"+canvas_id)[0].innerHTML="";
 145             paper = Raphael (canvas_id, this.total_width+x_sep, this.total_height);
 146         }
 147         this.paper=paper;
 148
 149         var axisx=this.axisx;
 150         var axisy=this.axisy;
 151         // maintain the list of nodelabels for the 'all nodes' button
 152         this.nodelabels=[];
 153
 154         ////////// create the time slots legend
 155         var top=0;
 156         var left=x_nodelabel;
 157
 158         var daymarker_height= 2*y_header+2*y_sep + (axisy.length+1)*(y_node+y_sep);
 159         var daymarker_path="M0,0L0," + daymarker_height;
 160
 161         var half_daymarker_off= 2*y_header+y_sep;
 162         var half_daymarker_path="M0," + half_daymarker_off + "L0," + daymarker_height;
 163
 164         var col=0;
 165         for (var i=0, len=axisx.length; i < len; ++i) {
 166             // pick the printable part
 167             var timelabel=axisx[i][1];
 168             var y = top+y_header;
 169             if (col%2 == 0) y += y_header;
 170             col +=1;
 171             // display time label
 172             var timelabel=paper.text(left,y,timelabel).attr(txt_timelabel)
 173                 .attr({"text-anchor":"middle"});
 174             // draw vertical line
 175             var path_spec="M"+left+" "+(y+y_header/2)+"L"+left+" "+this.total_height;
 176             var rule=paper.path(path_spec).attr(attr_rules);
 177             // show a day marker when relevant
 178             var timestamp=parseInt(axisx[i][0]);
 179             if ( (timestamp%(24*3600))==0) {
 180                 paper.path(daymarker_path).attr({'translation':left+','+top}).attr(attr_daymarker);
 181             } else if ( (timestamp%(12*3600))==0) {
 182                 paper.path(half_daymarker_path).attr({'translation':left+','+top}).attr(attr_daymarker);
 183             }
 184             left+=(this.w_grain);
 185         }
 186
 187         ////////// the row with the timeslot buttons (the one labeled 'All nodes')
 188         this.granularity=axisx[1][0]-axisx[0][0];
 189
 190         // move two lines down
 191         top += 2*y_header+2*y_sep;
 192         left=x_nodelabel;
 193         // all nodes buttons
 194         var allnodes = paper.text (x_nodelabel-x_sep,top+y_node/2,"All nodes").attr(txt_allnodes)
 195                 .attr ({"font-size":y_node, "text-anchor":"end","baseline":"bottom"});
 196         allnodes.scheduler=this;
 197         allnodes.click(allnodes_methods.click);
 198         // timeslot buttons
 199         for (var i=0, len=axisx.length; i < len; ++i) {
 200             var timebutton=paper.path(this.timebutton_path).attr({'translation':left+','+top}).attr(attr_timebutton);
 201             timebutton.from_time=axisx[i][0];
 202             timebutton.scheduler=this;
 203             timebutton.click(timebutton_methods.click);
 204             left+=(this.w_grain);
 205         }
 206
 207         //////// the body of the scheduler : loop on nodes
 208         top += y_node+y_sep;
 209         var data_index=0;
 210         this.leases=[];
 211         for (var i=0, len=axisy.length; i<len; ++i) {
 212             var nodename=axisy[i];
 213             left=0;
 214             var nodelabel = paper.text(x_nodelabel-x_sep,top+y_node/2,nodename).attr(txt_nodelabel)
 215                 .attr ({"font-size":y_node, "text-anchor":"end","baseline":"bottom"});
 216             nodelabel_methods.selected(nodelabel,1);
 217             nodelabel.click(nodelabel_methods.click);
 218             this.nodelabels.push(nodelabel);
 219
 220             left += x_nodelabel;
 221             var grain=0;
 222             while (grain < this.nb_grains()) {
 223                 lease_id=this.data[data_index][0];
 224                 slicename=this.data[data_index][1];
 225                 duration=this.data[data_index][2];
 226                 var lease=paper.rect (left,top,this.w_grain*duration,y_node,radius);
 227                 lease.lease_id=lease_id;
 228                 lease.nodename=nodename;
 229                 lease.nodelabel=nodelabel;
 230                 if (slicename == "") {
 231                     lease.initial="free";
 232                     lease_methods.init_free(lease);
 233                 } else if (slicename == this.slicename) {
 234                     lease.initial="mine";
 235                     lease_methods.init_mine(lease);
 236                 } else {
 237                     lease_initial="other";
 238                     lease_methods.init_other(lease,slicename);
 239                 }
 240                 lease.from_time = axisx[grain%this.nb_grains()][0];
 241                 grain += duration;
 242                 lease.until_time = axisx[grain%this.nb_grains()][0];
 243                 // record scheduler in lease
 244                 lease.scheduler=this;
 245                 // and vice versa
 246                 this.leases.push(lease);
 247                 // move on with the loop
 248                 left += this.w_grain*duration;
 249                 data_index +=1;
 250             }
 251             top += y_node + y_sep;
 252         };
 253     }
 254
 255     this.submit = function () {
 256         document.body.style.cursor = "wait";
 257         var actions=new Array();
 258         for (var i=0, len=this.leases.length; i<len; ++i) {
 259             var lease=this.leases[i];
 260             if (lease.current != lease.initial) {
 261                 var from_time=lease.from_time;
 262                 var until_time=lease.until_time;
 263                 /* scan the leases just after this one and merge if appropriate */
 264                 /* this makes sense when adding leases only though */
 265                 if (lease.current=='mine') {
 266                     var j=i+1;
 267                     while (j<len && lease_methods.compare (lease, until_time, this.leases[j])) {
 268 //                      window.console.log('merging index='+i+' initial='+this.leases[i].initial+' current='+this.leases[i].current);
 269 //                      window.console.log('merged index='+j+' initial='+this.leases[j].initial+' current='+this.leases[j].current);
 270                         until_time=this.leases[j].until_time;
 271                         ++j; ++i;
 272                     }
 273                 }
 274                 if (lease.current!='free') { // lease to add
 275                     actions.push(new Array('add-leases',
 276                                            new Array(lease.nodename),
 277                                            this.slicename,
 278                                            from_time,
 279                                            until_time));
 280                 } else { // lease to delete
 281                     actions.push(new Array ('delete-leases',
 282                                             lease.lease_id));
 283                 }
 284             }
 285         }
 286         sliceid=this.sliceid;
 287         // Ajax.Request comes with prototype
 288         var ajax=new Ajax.Request('/planetlab/common/actions.php',
 289                                   {method:'post',
 290                                    parameters:{'action':'manage-leases',
 291                                                'actions':actions.toJSON()},
 292                                    onSuccess: function(transport) {
 293                                        var response = transport.responseText || "no response text";
 294                                        document.body.style.cursor = "default";
 295 //                                     alert("Server answered:\n\n" + response + "\n\nPress OK to refresh page");
 296                                        Scheduler.scheduler.refresh();
 297                                    },
 298                                    onFailure: function(){
 299                                        document.body.style.cursor = "default";
 300                                        alert("Could not reach server, sorry...\n\nPress OK to refresh page");
 301                                        // not too sure what to do here ...
 302                                        Scheduler.scheduler.refresh();
 303                                    },
 304                                   });
 305     }
 306
 307     this.clear = function () {
 308         for (var i=0, len=this.leases.length; i<len; ++i) {
 309             var lease=this.leases[i];
 310             if (lease.current != lease.initial) {
 311                 if (lease.initial == 'free') lease_methods.init_free(lease,lease_methods.click_mine);
 312                 else                         lease_methods.init_mine(lease,lease_methods.click_free);
 313             }
 314         }
 315     }
 316
 317     this.refresh = function () {
 318         document.body.style.cursor = "wait";
 319         var ajax=new Ajax.Request('/planetlab/slices/leases-data.php',
 320                                   {method:'post',
 321                                    parameters:{'sliceid':this.sliceid,
 322                                                'slicename':this.slicename,
 323                                                'leases_grain':this.leases_grain,
 324                                                'leases_offset':this.leases_offset,
 325                                                'leases_slots':this.leases_slots,
 326                                                'leases_w':this.leases_w},
 327                                    onSuccess: function (transport) {
 328                                        var response = transport.responseText || "no response text";
 329 //                                     window.console.log("received from ajax=[["+response+"]]");
 330                                        var scheduler=Scheduler.scheduler;
 331                                        if ( ! scheduler.set_html (response))
 332                                            alert ("Something wrong .. Could not store ajax result..");
 333                                        else if ( ! scheduler.parse_html())
 334                                            alert ("Something wrong .. Could not parse ajax result..");
 335                                        else
 336                                            scheduler.draw_area("leases_area");
 337                                        document.body.style.cursor = "default";
 338                                    },
 339                                    onFailure: function(){
 340                                        document.body.style.cursor = "default";
 341                                        alert("Could not reach server, sorry...\n\n");
 342                                    },
 343                                   });
 344
 345     }
 346
 347 } // end Scheduler
 348
 349 //////////////////////////////////////// couldn't find how to inhererit from the raphael objects...
 350
 351 //////////////////// the 'all nodes' button
 352 var allnodes_methods = {
 353     click: function (event) {
 354         var scheduler=this.scheduler;
 355         /* decide what to do */
 356         var unselected=0;
 357         for (var i=0, len=scheduler.nodelabels.length; i<len; ++i)
 358             if (! scheduler.nodelabels[i].selected) unselected++;
 359         /* if at least one is not selected : select all */
 360         var new_state = (unselected >0) ? 1 : 0;
 361         for (var i=0, len=scheduler.nodelabels.length; i<len; ++i)
 362             nodelabel_methods.selected(scheduler.nodelabels[i],new_state);
 363     }
 364 }
 365
 366 //////////////////// the buttons for managing the whole timeslot
 367 var timebutton_methods = {
 368
 369     /* clicking */
 370     click: function (event) {
 371         var scheduler = this.scheduler;
 372         var from_time = this.from_time;
 373         var until_time = from_time + scheduler.granularity;
 374         /* scan leases on selected nodes, store in two arrays */
 375         var relevant_free=[], relevant_mine=[];
 376         for (var i=0,len=scheduler.leases.length; i<len; ++i) {
 377             var scan=scheduler.leases[i];
 378             if ( ! scan.nodelabel.selected) continue;
 379             // overlap ?
 380             if (scan.from_time<=from_time && scan.until_time>=until_time) {
 381                 if (scan.current == "free")       relevant_free.push(scan);
 382                 else if (scan.current == "mine")  relevant_mine.push(scan);
 383             }
 384         }
 385 //      window.console.log("Found " + relevant_free.length + " free and " + relevant_mine.length + " mine");
 386         /* decide what to do, whether book or release */
 387         if (relevant_mine.length==0 && relevant_free.length==0) {
 388             alert ("Nothing to do in this timeslot on the selected nodes");
 389             return;
 390         }
 391         // if at least one is free, let's book
 392         if (relevant_free.length > 0) {
 393             for (var i=0, len=relevant_free.length; i<len; ++i) {
 394                 var lease=relevant_free[i];
 395                 lease_methods.init_mine(lease,lease_methods.click_free);
 396             }
 397         // otherwise we unselect
 398         } else {
 399             for (var i=0, len=relevant_mine.length; i<len; ++i) {
 400                 var lease=relevant_mine[i];
 401                 lease_methods.init_free(lease,lease_methods.click_mine);
 402             }
 403         }
 404     }
 405 }
 406
 407 //////////////////// the nodelabel buttons
 408 var nodelabel_methods = {
 409
 410     // set selected mode and render visually
 411     selected: function (nodelabel, flag) {
 412         nodelabel.selected=flag;
 413         nodelabel.attr({'font-weight': (flag ? 'bold' : 'normal')});
 414     },
 415
 416     // toggle selected
 417     click: function (event) {
 418         nodelabel_methods.selected( this, ! this.selected );
 419     }
 420 }
 421
 422
 423 //////////////////// the lease buttons
 424 var lease_methods = {
 425
 426     /* in the process of merging leases before posting to the API */
 427     compare: function (lease, until_time, next_lease) {
 428         return (next_lease['nodename'] == lease['nodename'] &&
 429                 next_lease['from_time'] == until_time &&
 430                 next_lease['initial'] == lease['initial'] &&
 431                 next_lease['current'] == lease['current']);
 432     },
 433
 434     init_free: function (lease, unclick) {
 435         lease.current="free";
 436         // set color
 437         lease.animate((lease.initial=="free") ? attr_lease_free_free : attr_lease_mine_free,anim_delay);
 438         // keep track of the current status
 439         // record action
 440         lease.click (lease_methods.click_free);
 441         if (unclick) lease.unclick(unclick);
 442     },
 443
 444     // find out all the currently free leases that overlap this one
 445     click_free: function (event) {
 446         var scheduler = this.scheduler;
 447         lease_methods.init_mine(this,lease_methods.click_free);
 448     },
 449
 450     init_mine: function (lease, unclick) {
 451         lease.current="mine";
 452         lease.animate((lease.initial=="mine") ? attr_lease_mine_mine : attr_lease_free_mine,anim_delay);
 453         lease.click (lease_methods.click_mine);
 454         if (unclick) lease.unclick(unclick);
 455     },
 456
 457     click_mine: function (event) {
 458         var scheduler = this.scheduler;
 459         // this lease was originally free but is now marked for booking
 460         // we free just this lease
 461         lease_methods.init_free(this, lease_methods.click_mine);
 462     },
 463
 464
 465     init_other: function (lease, slicename) {
 466         lease.animate (attr_lease_other,anim_delay);
 467         /* a text obj to display the name of the slice that owns that lease */
 468         var otherslicelabel = paper.text (lease.attr("x")+lease.attr("width")/2,
 469                                           // xxx
 470                                           lease.attr("y")+lease.attr("height")/2,slicename).attr(txt_otherslice);
 471         /* hide it right away */
 472         otherslicelabel.hide();
 473         /* record it */
 474         lease.label=otherslicelabel;
 475         lease.hover ( function (e) { this.label.toFront(); this.label.show(); },
 476                       function (e) { this.label.hide(); } );
 477     },
 478 }
 479
 480 function init_scheduler () {
 481     // Grab the data
 482     var data = [], axisx = [], axisy = [];
 483     var sliceid = getInnerText($$("span#leases_sliceid")[0]).strip();
 484     var slicename = getInnerText($$("span#leases_slicename")[0]).strip();
 485     var w_grain = getInnerText($$("span#leases_w")[0]).strip();
 486     var scheduler = new Scheduler (sliceid,slicename,w_grain);
 487     // parse the table with data, and if not empty, draw the scheduler
 488     if (scheduler.parse_html ()) {
 489         scheduler.draw_area("leases_area");
 490     }
 491
 492     // attach behaviour to buttons
 493     var refresh=$$("button#leases_refresh")[0];
 494     if (refresh) refresh.onclick = function () { scheduler.refresh();}
 495     var submit=$$("button#leases_submit")[0];
 496     submit.onclick = function () { scheduler.submit(); }
 497
 498     scheduler.refresh();
 499
 500 }
 501
 502 Event.observe(window, 'load', init_scheduler);