ashatora/node-mbtiles
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Cleanup putTile/Grid and ensure zlib.deflate has completed before callback in putGrid.

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Young Hahn
2012-04-30 02:09:47 -04:00
parent e0fd92052f
commit 84c5fba64f
1 changed files with 31 additions and 28 deletions
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59
lib/mbtiles.js
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@@ -549,15 +549,12 @@ MBTiles.prototype.putTile = function(z, x, y, data, callback) {
// Tilelive may pass us a data.key. If not, generate an md5
// from the image buffer data.
var id;
if (data.key)
id = String(data.key);
else
id = crypto.createHash('md5').update(data).digest('hex');
if (!this._tileCache[id]) {
// This corresponds to the images table.
this._tileCache[id] = data;
}
var id = data.key
? String(data.key)
: crypto.createHash('md5').update(data).digest('hex');
// This corresponds to the images table.
if (!this._tileCache[id]) this._tileCache[id] = data;
// This corresponds to the map table.
var coords = hash(z, x, y);
@@ -611,32 +608,38 @@ MBTiles.prototype.putGrid = function(z, x, y, data, callback) {
// Preprocess grid data.
var json = JSON.stringify({ grid: data.grid, keys: data.keys });
var id = data.id || crypto.createHash('md5').update(json).digest('hex');
if (!this._gridCache[id]) {
// This corresponds to the grid_utfgrid table.
var that = this;
Step(function() {
zlib.deflate(new Buffer(json, 'utf8'),this);
}, function(err,buffer) {
if (err) return callback(err);
that._gridCache[id] = buffer;
// This corresponds to the grid_key table.
that._keyCache[id] = Object.keys(data.data || {});
// This corresponds to the keymap table.
_(that._dataCache).extend(data.data || {});
}
);
}
// Tilelive may pass us a data.key. If not, generate an md5
// from the grid data.
var id = data.key
? String(data.key)
: crypto.createHash('md5').update(json).digest('hex');
// This corresponds to the map table.
var coords = hash(z, x, y);
if (!this._mapCache[coords]) this._mapCache[coords] = { z: z, x: x, y: y };
this._mapCache[coords].grid_id = id;
// Only commit when we can insert at least batchSize rows.
if (++this._pending >= this._batchSize) return this._commit(callback);
else return callback(null);
var mbtiles = this;
Step(function() {
if (mbtiles._gridCache[id]) return this();
else zlib.deflate(new Buffer(json, 'utf8'), this);
}, function(err, buffer) {
if (err) throw err;
if (mbtiles._gridCache[id]) return this();
// grid_utfgrid table.
mbtiles._gridCache[id] = buffer;
// grid_key table.
mbtiles._keyCache[id] = Object.keys(data.data || {});
// keymap table.
_(mbtiles._dataCache).extend(data.data || {});
this();
}, function(err) {
if (err) return callback(err);
// Only commit when we can insert at least batchSize rows.
if (++this._pending >= this._batchSize) return this._commit(callback);
else return callback(null);
});
};
// Inserts a duplicate grid into the MBTiles store. Scheme is XYZ.