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 = 24;
  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 var txt_timelabel = {"font": '"Trebuchet MS", Verdana, Arial, Helvetica, sans-serif', stroke: "none", fill: "#008"};
  24 var txt_allnodes = {"font": '"Trebuchet MS", Verdana, Arial, Helvetica, sans-serif', stroke: "none", fill: "#404"};
  25 var txt_nodelabel = {"font": '"Trebuchet MS", Verdana, Arial, Helvetica, sans-serif', stroke: "none", fill: "#008"};
  26
  27 var attr_timebutton = {'fill':'#bbf', 'stroke': '#338','stroke-width':2,
  28                        'stroke-linecap':'round', 'stroke-linejoin':'miter', 'stroke-miterlimit':3};
  29 // keep consistent with sizes above - need for something nicer
  30 var timebutton_path = "M1,0L23,0L12,13L1,0";
  31
  32 /* lease dimensions and colors */
  33 /* refrain from using gradient color, seems to not be animated properly */
  34 /* lease was originally free and is still free */
  35 var attr_lease_free_free={'fill':"#def", 'stroke-width':0.5, 'stroke-dasharray':''};
  36 /* lease was originally free and is now set for our usage */
  37 var attr_lease_free_mine={'fill':"green", 'stroke-width':1, 'stroke-dasharray':'-..'};
  38 /* was mine and is still mine */
  39 var attr_lease_mine_mine={'fill':"#beb", 'stroke-width':0.5, 'stroke-dasharray':''};
  40 /* was mine and is about to be released */
  41 var attr_lease_mine_free={'fill':"white", 'stroke-width':1, 'stroke-dasharray':'-..'};
  42 var attr_lease_other={'fill':"#f88"};
  43
  44 /* other slices name */
  45 var txt_otherslice = {"font": '"Trebuchet MS", Verdana, Arial, Helvetica, sans-serif', stroke: "none", fill: "#444",
  46                       "font-size": 12 };
  47
  48 ////////////////////////////////////////////////////////////
  49 // the scheduler object
  50 function Scheduler (sliceid, slicename, axisx, axisy, data) {
  51
  52     // the data contains slice names, and lease_id, we need this to find our own leases (mine)
  53     this.sliceid=sliceid;
  54     this.slicename=slicename;
  55     this.axisx=axisx;
  56     this.axisy=axisy;
  57     this.data=data;
  58
  59     // utilities to keep track of all the leases
  60     this.leases=[];
  61     this.append_lease = function (lease) {
  62         this.leases.push(lease);
  63     }
  64
  65     // how many time slots
  66     this.nb_grains = function () { return axisx.length;}
  67
  68     this.init = function (canvas_id) {
  69         this.total_width = x_nodelabel + this.nb_grains()*x_grain;
  70         this.total_height =   2*y_header /* the timelabels */
  71                             + 2*y_sep    /* extra space */
  72                             + y_node     /* all-nodes & timebuttons row */
  73                             + (this.axisy.length)*(y_node+y_sep);  /* the regular nodes and preceding space */
  74         paper = Raphael (canvas_id, this.total_width+x_sep, this.total_height);
  75
  76         // maintain the list of nodelabels for the 'all nodes' button
  77         this.nodelabels=[];
  78
  79         ////////// create the time slots legend
  80         var top=0;
  81         var left=x_nodelabel;
  82
  83         var col=0;
  84         for (var i=0, len=axisx.length; i < len; ++i) {
  85             // pick the printable part
  86             timelabel=axisx[i][1];
  87             var y = top+y_header;
  88             if (col%2 == 0) y += y_header;
  89             col +=1;
  90             // display time label
  91             var timelabel=paper.text(left,y,timelabel).attr(txt_timelabel)
  92                 .attr({"font-size":y_header, "text-anchor":"middle"});
  93             // draw vertical line
  94             var path_spec="M"+left+" "+(y+y_header/2)+"L"+left+" "+this.total_height;
  95             var rule=paper.path(path_spec).attr(attr_rules);
  96             left+=x_grain;
  97         }
  98
  99         this.granularity=axisx[1][0]-axisx[0][0];
 100
 101         ////////// the row with the timeslot buttons
 102         // move two lines down
 103         top += 2*y_header+2*y_sep;
 104         left=x_nodelabel;
 105         // all nodes buttons
 106         var allnodes = paper.text (x_nodelabel-x_sep,top+y_node/2,"All nodes").attr(txt_allnodes)
 107                 .attr ({"font-size":y_node, "text-anchor":"end","baseline":"bottom"});
 108         allnodes.scheduler=this;
 109         allnodes.click(allnodes_methods.click);
 110         // timeslot buttons
 111         for (var i=0, len=axisx.length; i < len; ++i) {
 112             var timebutton=paper.path(timebutton_path).attr({'translation':left+','+top}).attr(attr_timebutton);
 113             timebutton.from_time=axisx[i][0];
 114             timebutton.scheduler=this;
 115             timebutton.click(timebutton_methods.click);
 116             left+=x_grain;
 117         }
 118
 119         //////// the body of the scheduler : loop on nodes
 120         top += y_node+y_sep;
 121         var data_index=0;
 122         for (var i=0, len=axisy.length; i<len; ++i) {
 123             nodename=axisy[i];
 124             left=0;
 125             var nodelabel = paper.text(x_nodelabel-x_sep,top+y_node/2,nodename).attr(txt_nodelabel)
 126                 .attr ({"font-size":y_node, "text-anchor":"end","baseline":"bottom"});
 127             nodelabel_methods.selected(nodelabel,1);
 128             nodelabel.click(nodelabel_methods.click);
 129             this.nodelabels.push(nodelabel);
 130
 131             left += x_nodelabel;
 132             var grain=0;
 133             while (grain < this.nb_grains()) {
 134                 lease_id=data[data_index][0];
 135                 slicename=data[data_index][1];
 136                 duration=data[data_index][2];
 137                 var lease=paper.rect (left,top,x_grain*duration,y_node,radius);
 138                 lease.lease_id=lease_id;
 139                 lease.nodename=nodename;
 140                 lease.nodelabel=nodelabel;
 141                 if (slicename == "") {
 142                     lease.initial="free";
 143                     lease_methods.init_free(lease);
 144                 } else if (slicename == this.slicename) {
 145                     lease.initial="mine";
 146                     lease_methods.init_mine(lease);
 147                 } else {
 148                     lease_initial="other";
 149                     lease_methods.init_other(lease,slicename);
 150                 }
 151                 lease.from_time = axisx[grain%this.nb_grains()][0];
 152                 grain += duration;
 153                 lease.until_time = axisx[grain%this.nb_grains()][0];
 154                 // record scheduler in lease
 155                 lease.scheduler=this;
 156                 // and vice versa
 157                 this.append_lease(lease);
 158                 // move on with the loop
 159                 left += x_grain*duration;
 160                 data_index +=1;
 161             }
 162             top += y_node + y_sep;
 163         };
 164     }
 165
 166     this.submit = function () {
 167         document.body.style.cursor = "wait";
 168         var actions=new Array();
 169         for (var i=0, len=this.leases.length; i<len; ++i) {
 170             var lease=this.leases[i];
 171             if (lease.current != lease.initial) {
 172                 var from_time=lease.from_time;
 173                 var until_time=lease.until_time;
 174                 /* scan the leases just after this one and merge if appropriate */
 175                 var j=i+1;
 176                 while (j<len && lease_methods.compare (lease, until_time, this.leases[j])) {
 177 //                  window.console.log('merged index='+j);
 178                     until_time=this.leases[j].until_time;
 179                     ++j; ++i;
 180                 }
 181                 if (lease.current!='free') { // lease to add
 182                     actions.push(new Array('add-leases',
 183                                            new Array(lease.nodename),
 184                                            this.slicename,
 185                                            from_time,
 186                                            until_time));
 187                 } else { // lease to delete
 188                     actions.push(new Array ('delete-leases',
 189                                             lease.lease_id));
 190                 }
 191             }
 192         }
 193         sliceid=this.sliceid;
 194         // once we're done with the side-effect performed in actions.php, we need to refresh this view
 195         redirect = function (sliceid) {
 196             window.location = '/db/slices/slice.php?id=' + sliceid + '&show_details=0&show_nodes=1&show_nodes_resa=1';
 197         }
 198         // Ajax.Request comes with prototype
 199         var ajax=new Ajax.Request('/planetlab/common/actions.php',
 200                                   {method:'post',
 201                                    parameters:{'action':'manage-leases',
 202                                                'actions':actions.toJSON()},
 203                                    onSuccess: function(transport) {
 204                                        var response = transport.responseText || "no response text";
 205                                        document.body.style.cursor = "default";
 206                                        alert("Server answered:\n\n" + response + "\n\nPress OK to refresh page");
 207                                        redirect(sliceid);
 208                                    },
 209                                    onFailure: function(){
 210                                        document.body.style.cursor = "default";
 211                                        alert("Could not reach server, sorry...\n\nPress OK to refresh page");
 212                                        // not too sure what to do here ...
 213                                        redirect(sliceid);
 214                                    },
 215                                   });
 216     }
 217
 218     this.clear = function () {
 219         for (var i=0, len=this.leases.length; i<len; ++i) {
 220             var lease=this.leases[i];
 221             if (lease.current != lease.initial) {
 222                 if (lease.initial == 'free') lease_methods.init_free(lease,lease_methods.click_mine);
 223                 else                         lease_methods.init_mine(lease,lease_methods.click_free);
 224             }
 225         }
 226     }
 227
 228 } // end Scheduler
 229
 230 //////////////////////////////////////// couldn't find how to inhererit from the raphael objects...
 231
 232 //////////////////// the 'all nodes' button
 233 var allnodes_methods = {
 234     click: function (event) {
 235         var scheduler=this.scheduler;
 236         /* decide what to do */
 237         var unselected=0;
 238         for (var i=0, len=scheduler.nodelabels.length; i<len; ++i)
 239             if (! scheduler.nodelabels[i].selected) unselected++;
 240         /* if at least one is not selected : select all */
 241         var new_state = (unselected >0) ? 1 : 0;
 242         for (var i=0, len=scheduler.nodelabels.length; i<len; ++i)
 243             nodelabel_methods.selected(scheduler.nodelabels[i],new_state);
 244     }
 245 }
 246
 247 //////////////////// the buttons for managing the whole timeslot
 248 var timebutton_methods = {
 249
 250     /* clicking */
 251     click: function (event) {
 252         var scheduler = this.scheduler;
 253         var from_time = this.from_time;
 254         var until_time = from_time + scheduler.granularity;
 255         /* scan leases on selected nodes, store in two arrays */
 256         var relevant_free=[], relevant_mine=[];
 257         for (var i=0,len=scheduler.leases.length; i<len; ++i) {
 258             var scan=scheduler.leases[i];
 259             if ( ! scan.nodelabel.selected) continue;
 260             // overlap ?
 261             if (scan.from_time<=from_time && scan.until_time>=until_time) {
 262                 if (scan.current == "free")       relevant_free.push(scan);
 263                 else if (scan.current == "mine")  relevant_mine.push(scan);
 264             }
 265         }
 266 //      window.console.log("Found " + relevant_free.length + " free and " + relevant_mine.length + " mine");
 267         /* decide what to do, whether book or release */
 268         if (relevant_mine.length==0 && relevant_free.length==0) {
 269             alert ("Nothing to do in this timeslot on the selected nodes");
 270             return;
 271         }
 272         // if at least one is free, let's book
 273         if (relevant_free.length > 0) {
 274             for (var i=0, len=relevant_free.length; i<len; ++i) {
 275                 var lease=relevant_free[i];
 276                 lease_methods.init_mine(lease,lease_methods.click_free);
 277             }
 278         // otherwise we unselect
 279         } else {
 280             for (var i=0, len=relevant_mine.length; i<len; ++i) {
 281                 var lease=relevant_mine[i];
 282                 lease_methods.init_free(lease,lease_methods.click_mine);
 283             }
 284         }
 285     }
 286 }
 287
 288 //////////////////// the nodelabel buttons
 289 var nodelabel_methods = {
 290
 291     // set selected mode and render visually
 292     selected: function (nodelabel, flag) {
 293         nodelabel.selected=flag;
 294         nodelabel.attr({'font-weight': (flag ? 'bold' : 'normal')});
 295     },
 296
 297     // toggle selected
 298     click: function (event) {
 299         nodelabel_methods.selected( this, ! this.selected );
 300     }
 301 }
 302
 303
 304 //////////////////// the lease buttons
 305 var lease_methods = {
 306
 307     /* in the process of merging leases before posting to the API */
 308     compare: function (lease, until_time, next_lease) {
 309         return (next_lease['nodename'] == lease['nodename'] &&
 310                 next_lease['from_time'] == until_time &&
 311                 next_lease['initial'] == lease['initial'] &&
 312                 next_lease['current'] == lease['current']);
 313     },
 314
 315     init_free: function (lease, unclick) {
 316         lease.current="free";
 317         // set color
 318         lease.animate((lease.initial=="free") ? attr_lease_free_free : attr_lease_mine_free,anim_delay);
 319         // keep track of the current status
 320         // record action
 321         lease.click (lease_methods.click_free);
 322         if (unclick) lease.unclick(unclick);
 323     },
 324
 325     // find out all the currently free leases that overlap this one
 326     click_free: function (event) {
 327         var scheduler = this.scheduler;
 328         lease_methods.init_mine(this,lease_methods.click_free);
 329     },
 330
 331     init_mine: function (lease, unclick) {
 332         lease.current="mine";
 333         lease.animate((lease.initial=="mine") ? attr_lease_mine_mine : attr_lease_free_mine,anim_delay);
 334         lease.click (lease_methods.click_mine);
 335         if (unclick) lease.unclick(unclick);
 336     },
 337
 338     click_mine: function (event) {
 339         var scheduler = this.scheduler;
 340         // this lease was originally free but is now marked for booking
 341         // we free just this lease
 342         lease_methods.init_free(this, lease_methods.click_mine);
 343     },
 344
 345
 346     init_other: function (lease, slicename) {
 347         lease.animate (attr_lease_other,anim_delay);
 348         /* a text obj to display the name of the slice that owns that lease */
 349         var otherslicelabel = paper.text (lease.attr("x")+lease.attr("width")/2,
 350                                           // xxx
 351                                           lease.attr("y")+lease.attr("height")/2,slicename).attr(txt_otherslice);
 352         /* hide it right away */
 353         otherslicelabel.hide();
 354         /* record it */
 355         lease.label=otherslicelabel;
 356         lease.hover ( function (e) { this.label.toFront(); this.label.show(); },
 357                       function (e) { this.label.hide(); } );
 358     },
 359 }
 360
 361 function init_scheduler () {
 362     // Grab the data
 363     var data = [], axisx = [], axisy = [];
 364     var table = $$("table#leases_data")[0];
 365     // no reservable nodes - no data
 366     if ( ! table) return;
 367     // the nodelabels
 368     table.getElementsBySelector("tbody>tr>th").each(function (cell) {
 369         axisy.push(getInnerText(cell));
 370     });
 371     // the timeslot labels
 372     table.getElementsBySelector("thead>tr>th").each(function (cell) {
 373         /* [0]: timestamp -- [1]: displayable*/
 374         axisx.push(getInnerText(cell).split("&"));
 375     });
 376     // leases - expect colspan to describe length in grains
 377     // the text contents is expected to be lease_id & slicename
 378     table.getElementsBySelector("tbody>tr>td").each(function (cell) {
 379         var cell_data;
 380         slice_attributes=getInnerText(cell).split('&');
 381         // booked leases come with lease id and slice name
 382         if (slice_attributes.length == 2) {
 383             // leases is booked : slice_id, slice_name, duration in grains
 384             cell_data=new Array (slice_attributes[0], slice_attributes[1], cell.colSpan);
 385         } else {
 386             cell_data = new Array ('','',cell.colSpan);
 387         }
 388         data.push(cell_data);
 389     });
 390     // sliceid & slicename : the upper-left cell
 391     var slice_attributes = getInnerText(table.getElementsBySelector("thead>tr>td")[0]).split('&');
 392     var sliceid=slice_attributes[0];
 393     var slicename=slice_attributes[1];
 394     var scheduler = new Scheduler (sliceid,slicename, axisx, axisy, data);
 395     table.hide();
 396     // leases_area is a <div> created by slice.php as a placeholder
 397     scheduler.init ("leases_area");
 398
 399     var submit=$$("button#leases_submit")[0];
 400     submit.onclick = function () { scheduler.submit(); }
 401     var clear=$$("button#leases_clear")[0];
 402     clear.onclick = function () { scheduler.clear(); }
 403
 404 }
 405
 406 Event.observe(window, 'load', init_scheduler);