def stats_tms(request, t=None, stat=None, z=None, x=None, y=None, u=None, ext=None):
#==#
verbose = True
ix = None
iy = None
iyf = None
iz = None
if u:
iz, ix, iy = quadkey_to_tms(u)
elif x and y and z:
ix = int(x)
iy = int(y)
iz = int(z)
if t == "regular":
ify = flip_y(ix,iy,iz,256,webmercator_bbox)
else:
ify = iy
iy = flip_y(ix,ify,iz,256,webmercator_bbox)
#stats = stats_tilerequest()
cache, stats = get_from_cache('default','stats_tilerequests')
key = z+"/"+x+"/"+y
if not stats:
return None
if not stat:
return None
image = None
if key in stats['global'][stat]:
blue = (256.0 * stats['global'][stat][key]) / stats['tile']['max']
image = solidTile(width=256, height=256, b=int(blue), a=128)
else:
image = blankTile(width=256, height=256)
if image:
response = HttpResponse(content_type="image/png")
image.save(response, "PNG")
return response
else:
return None
def getYValues(tileservice, tilesource, ix, iy, iz):
iyf = -1
if tileservice:
if tileservice["type"] == TYPE_TMS_FLIPPED or tileservice["type"] == TYPE_BING:
iyf = iy
iy = flip_y(ix, iyf, iz, 256, webmercator_bbox)
else:
iyf = flip_y(ix, iy, iz, 256, webmercator_bbox)
else:
if tilesource["type"] == TYPE_TMS_FLIPPED or tilesource["type"] == TYPE_BING:
iyf = iy
iy = flip_y(ix, iyf, iz, 256, webmercator_bbox)
else:
iyf = flip_y(ix, iy, iz, 256, webmercator_bbox)
return (iy, iyf)
def taskRequestTile(ts, iz, ix, iy, ext, verbose=True):
now = datetime.datetime.now()
# Load Logging Info
#log_root = settings.LOG_REQUEST_ROOT
log_format = settings.LOG_REQUEST_FORMAT
#if log_root and log_format:
# if not os.path.exists(log_root):
# os.makedirs(log_root)
#if settings.LOG_ERRORS_ROOT
# if not os.path.exists(log_root):
# os.makedirs(log_root)
indirect_file = settings.LOG_INDIRECT_ROOT+os.sep+"requests_tiles_"+now.strftime('%Y-%m-%d')+"_indirect.tsv"
# Find TileSource
tilesource = None
tilesources = getTileSources(proxy=True)
for candidate in tilesources:
if candidate['id'] == ts:
tilesource = candidate
break
if not tilesource:
error_file = settings.LOG_ERRORS_ROOT+os.sep+"requests_tiles_"+now.strftime('%Y-%m-%d')+"_errors.txt"
with open(error_file,'a') as f:
line = "Error: Could not find tilesource for primary key "+str(ts)+"."
f.write(line+"\n")
return
#Y is always in regualar TMS before being added to task queue
iyf = flip_y(ix,iy,iz)
#iy, iyf = getYValues(None,tilesource,ix,iy,iz)
tile_bbox = tms_to_bbox(ix,iy,iz)
#Check if requested tile is within source's extents
returnBlankTile = False
returnErrorTile = False
intersects = True
if tilesource['extents']:
intersects = bbox_intersects_source(tilesource,ix,iyf,iz)
if not intersects:
returnBlankTile = True
validZoom = 0
#Check if inside source zoom levels
if tilesource['minZoom'] or tilesource['maxZoom']:
if (tilesource['minZoom'] and iz < tilesource['minZoom']):
validZoom = -1
elif (tilesource['maxZoom'] and iz > tilesource['maxZoom']):
validZoom = 1
if validZoom != 0:
#returnBlank = True
returnErrorTile = True
if returnBlankTile or returnErrorTile:
return
tile = None
if iz >= settings.TILEJET['cache']['memory']['minZoom'] and iz <= settings.TILEJET['cache']['memory']['maxZoom']:
#key = "{layer},{z},{x},{y},{ext}".format(layer=tilesource.name,x=ix,y=iy,z=iz,ext=ext)
key = ",".join([tilesource['name'],str(iz),str(ix),str(iy),ext])
tilecache, tile = getTileFromCache(
settings.CACHES['tiles']['LOCATION'],
settings.CACHES['tiles'],
'tiles',
key,
True,
GEVENT_MONKEY_PATCH=True)
if not tilecache:
error_file = settings.LOG_ERRORS_ROOT+os.sep+"requests_tiles_"+now.strftime('%Y-%m-%d')+"_errors.txt"
with open(error_file,'a') as f:
line = "Error: Could not connect to cache (tiles)."
f.write(line+"\n")
return
if tile:
if verbose:
print "task / cache hit for "+key
else:
if verbose:
print "task / cache miss for "+key
with open(indirect_file,'a') as f:
line = log_format.format(
status='indirect',
tileorigin=tilesource['origin'],
tilesource=tilesource['name'],
z=iz,x=ix,y=iy,
ip='-',
datetime=now.isoformat())
f.write(line+"\n")
from urllib2 import HTTPError
try:
if tilesource['type'] == TYPE_TMS:
tile = requestTileFromSource(tilesource,ix,iy,iz,ext,True)
elif tilesource['type'] == TYPE_TMS_FLIPPED:
tile = requestTileFromSource(tilesource,ix,iyf,iz,ext,True)
except HTTPError, err:
error_file = settings.LOG_ERRORS_ROOT+os.sep+"requests_tiles_"+now.strftime('%Y-%m-%d')+"_errors.txt"
with open(error_file,'a') as f:
line = "Error: HTTPError. Could not get tile ("+key+") from source."
f.write(line+"\n")
return
except: