def process(uri):
"""Process this request
This should look something like "/onsite/features/2016/11/161125.png"
"""
if uri is None:
send_content_type("text")
ssw("ERROR!")
return
match = PATTERN.match(uri)
if match is None:
send_content_type("text")
ssw("ERROR!")
sys.stderr.write("feature content failure: %s\n" % (repr(uri), ))
return
data = match.groupdict()
fn = ("/mesonet/share/features/%(yyyy)s/%(mm)s/"
"%(yymmdd)s%(extra)s.%(suffix)s") % data
if os.path.isfile(fn):
send_content_type(data['suffix'])
ssw(open(fn, 'rb').read())
dblog(data['yymmdd'])
else:
send_content_type('png')
from io import BytesIO
from pyiem.plot.use_agg import plt
(_, ax) = plt.subplots(1, 1)
ax.text(0.5, 0.5, "Feature Image was not Found!",
transform=ax.transAxes, ha='center')
plt.axis('off')
ram = BytesIO()
plt.savefig(ram, format='png')
ram.seek(0)
ssw(ram.read())
def error_image(message, fmt):
"""Create an error image"""
plt.close()
_, ax = plt.subplots(1, 1)
msg = "IEM Autoplot generation resulted in an error\n%s" % (message,)
ax.text(0.5, 0.5, msg, transform=ax.transAxes, ha="center", va="center")
ram = BytesIO()
plt.axis("off")
plt.savefig(ram, format=fmt, dpi=100)
ram.seek(0)
plt.close()
return ram.read()
def process(env):
"""Process this request
This should look something like "/onsite/features/2016/11/161125.png"
"""
uri = env.get('REQUEST_URI')
if uri is None:
send_content_type("text")
ssw("ERROR!")
return
match = PATTERN.match(uri)
if match is None:
send_content_type("text")
ssw("ERROR!")
sys.stderr.write("feature content failure: %s\n" % (repr(uri), ))
return
data = match.groupdict()
fn = ("/mesonet/share/features/%(yyyy)s/%(mm)s/"
"%(yymmdd)s%(extra)s.%(suffix)s") % data
if os.path.isfile(fn):
rng = env.get("HTTP_RANGE", "bytes=0-")
tokens = rng.replace("bytes=", "").split("-", 1)
resdata = open(fn, 'rb').read()
totalsize = len(resdata)
stripe = slice(
int(tokens[0]), totalsize if tokens[-1] == '' else
(int(tokens[-1]) + 1))
send_content_type(data['suffix'], len(resdata), stripe)
ssw(resdata[stripe])
dblog(data['yymmdd'])
else:
send_content_type('png')
from io import BytesIO
from pyiem.plot.use_agg import plt
(_, ax) = plt.subplots(1, 1)
ax.text(0.5,
0.5,
"Feature Image was not Found!",
transform=ax.transAxes,
ha='center')
plt.axis('off')
ram = BytesIO()
plt.savefig(ram, format='png')
ram.seek(0)
ssw(ram.read())
def application(environ, start_response):
"""Process this request
This should look something like "/onsite/features/2016/11/161125.png"
"""
headers = [("Accept-Ranges", "bytes")]
uri = environ.get("REQUEST_URI")
# Option 1, no URI is provided.
if uri is None:
headers.append(get_content_type("text"))
start_response("500 Internal Server Error", headers)
return [b"ERROR!"]
match = PATTERN.match(uri)
# Option 2, the URI pattern is unknown.
if match is None:
headers.append(get_content_type("text"))
start_response("500 Internal Server Error", headers)
sys.stderr.write("feature content failure: %s\n" % (repr(uri), ))
return [b"ERROR!"]
data = match.groupdict()
fn = ("/mesonet/share/features/%(yyyy)s/%(mm)s/"
"%(yymmdd)s%(extra)s.%(suffix)s") % data
# Option 3, we have no file.
if not os.path.isfile(fn):
# lazy import to save the expense of firing this up when this loads
# pylint: disable=import-outside-toplevel
from pyiem.plot.use_agg import plt
headers.append(get_content_type("png"))
(_, ax) = plt.subplots(1, 1)
ax.text(
0.5,
0.5,
"Feature Image was not Found!",
transform=ax.transAxes,
ha="center",
)
plt.axis("off")
ram = BytesIO()
plt.savefig(ram, format="png")
plt.close()
ram.seek(0)
start_response("404 Not Found", headers)
return [ram.read()]
# Option 4, we can support this request.
headers.append(get_content_type(data["suffix"]))
rng = environ.get("HTTP_RANGE", "bytes=0-")
tokens = rng.replace("bytes=", "").split("-", 1)
resdata = open(fn, "rb").read()
totalsize = len(resdata)
stripe = slice(
int(tokens[0]),
totalsize if tokens[-1] == "" else (int(tokens[-1]) + 1),
)
status = "200 OK"
if totalsize != (stripe.stop - stripe.start):
status = "206 Partial Content"
headers.append(("Content-Length", "%.0f" % (stripe.stop - stripe.start, )))
if environ.get("HTTP_RANGE") and stripe is not None:
secondval = ("" if environ.get("HTTP_RANGE") == "bytes=0-" else
(stripe.stop - 1))
headers.append((
"Content-Range",
"bytes %s-%s/%s" % (stripe.start, secondval, totalsize),
))
dblog(data["yymmdd"])
start_response(status, headers)
return [resdata[stripe]]