More refactoring, dedicated class for requests and responses
This commit is contained in:
Klaus-Uwe Mitterer
parent
29a53df24e
commit
cf7065a567
350
main.py
350
main.py
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@ -7,220 +7,176 @@ import workers.val
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import workers.closest
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import workers.radar
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from classes.request import *
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from classes.response import *
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HTTP200 = "200 OK"
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HTTP400 = "400 Bad Request"
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HTTP405 = "405 Method Not Allowed"
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HTTP500 = "500 Internal Server Error"
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HTML = "text/html"
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JSON = "application/json"
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XML = "text/xml"
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def doConn(args, cfrm = None, cto = None):
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def doConn(req):
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try:
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getfrm = req.cfrm if "cfrm" in dir(req) and req.cfrm else req.args["from"][0] if "from" in req.args else None
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getto = req.cto if "cto" in dir(req) and req.cto else req.args["to"][0] if "to" in req.args else None
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try:
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try:
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frm = (cfrm or args["from"][0]).encode("latin-1").decode("utf-8")
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to = (cto or args["to"][0]).encode("latin-1").decode("utf-8")
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except UnicodeDecodeError:
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frm = cfrm or args["from"][0]
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to = cto or args["to"][0]
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frm = getfrm.encode("latin-1").decode("utf-8")
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to = getto.encode("latin-1").decode("utf-8")
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except UnicodeDecodeError:
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frm = getfrm
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to = getto
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if not frm or not to:
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raise ValueError()
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if not frm or not to:
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raise ValueError()
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except Exception:
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content = "<h1>400 Bad Request</h1>\n"
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content += "\"from\"and \"to\" values are required for this type of request.\n"
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return (HTTP400, HTML, content)
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except Exception:
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content = "<h1>400 Bad Request</h1>\n"
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content += "\"from\"and \"to\" values are required for this type of request."
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return Response(HTTP400, HTML, content)
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count = args["count"][0] if "count" in args and args["count"] else 6
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date = args["date"][0] if "date" in args and args["date"] else datetime.datetime.strftime(datetime.datetime.now(pytz.timezone("Europe/Vienna")),"%d.%m.%Y")
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time = args["time"][0] if "time" in args and args["time"] else datetime.datetime.strftime(datetime.datetime.now(pytz.timezone("Europe/Vienna")),"%H:%M")
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mode = True if "mode" in args and args["mode"] and args["mode"][0].lower() == "arr" else False
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details = True if "details" in args else False
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try:
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count = int(count)
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if count < 0 or count > 10:
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raise ValueError()
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except:
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content = "<h1>400 Bad Request</h1>\n"
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content += "The \"count\" value must be a value between 0 and 10."
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return (HTTP400, HTML, content)
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try:
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outtime = datetime.datetime.strptime("%s %s" % (date, time), "%d.%m.%Y %H:%M")
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except:
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content = "<h1>400 Bad Request</h1>\n"
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content += "The \"date\" value must be in DD.MM.YYYY format, the \"time\" value must be in HH:MM format."
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return (HTTP400, HTML, content)
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via = list(args["via"]) if "via" in args else None
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if via and len(via) > 3:
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content = "<h1>400 Bad Request</h1>\n"
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content += "It is not possible to route through more than three \"via\" stations."
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return (HTTP400, HTML, content)
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json = "json" in args
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try:
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content = workers.conn.worker(frm, to, count, outtime, mode, details, json, via)
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except Exception as e:
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content = "<h1>500 Internal Server Error</h1>\n"
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if "debug" in args:
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content += str(e)
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return (HTTP500, HTML, content)
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return (HTTP200, JSON if json else XML, content)
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def doVal(args, cfrm):
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try:
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try:
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name = (cfrm or args["name"][0]).encode("latin-1").decode("utf-8")
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except UnicodeDecodeError:
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name = cfrm or args["name"][0]
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if not name:
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raise ValueError()
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except:
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content = "<h1>400 Bad Request</h1>\n"
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content += "A \"name\" value is required for this type of request."
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return HTTP400, HTML, content
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json = "json" in args
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try:
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content = workers.val.worker(name, json)
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except Exception as e:
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content = "<h1>500 Internal Server Error</h1>\n"
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if "debug" in args:
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content += str(e).encode()
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return HTTP500, HTML, content
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return HTTP200, JSON if json else XML, content
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def doNearby(args):
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try:
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lat = float(args["lat"][0].replace(",", "."))
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lon = float(args["lon"][0].replace(",", "."))
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if (not lat and not lat == float(0)) or (not lon and not lon == float(0)):
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raise ValueError()
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except:
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content = "<h1>400 Bad Request</h1>\n"
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content += "\"lat\" and \"lon\" values are required for this type of request."
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return HTTP400, HTML, content
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distance = args["distance"][0] if "distance" in args and args["distance"] else 1000
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try:
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distance = int(distance)
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if distance < 0 or distance > 10000:
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raise ValueError()
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except:
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content = "<h1>400 Bad Request</h1>\n"
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content += "\"distance\" must be a value between 0 and 10000."
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return HTTP400, HTML, content
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json = "json" in args
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try:
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content = workers.closest.worker(lat, lon, distance, json)
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except Exception as e:
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content = "<h1>500 Internal Server Error</h1>"
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if "debug" in args:
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content += repr(e)
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return HTTP500, HTML, content
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return HTTP200, JSON if json else XML, content
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def doRadar(args):
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trains = args["train"] if "train" in args else None
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json = "json" in args
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try:
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content = workers.radar.worker(trains, json)
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except Exception as e:
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content = "<h1>500 Internal Server Error</h1>\n"
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if "debug" in args:
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content += repr(e)
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return HTTP500, HTML, content
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return HTTP200, JSON if json else XML, content
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def application(env, re):
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if env["REQUEST_METHOD"] == "POST":
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args = cgi.parse_qs(env['wsgi.input'].readline().decode(), True)
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elif env["REQUEST_METHOD"] == "GET":
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args = cgi.parse_qs(env['QUERY_STRING'], True)
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else:
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re("405 Method Not Allowed", [])
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return
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conn = False
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val = False
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cfrm = None
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cto = None
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split = env["PATH_INFO"].split("/")
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split = [i.strip() for i in split]
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while "" in split:
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split.remove("")
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if len(split) > 2:
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re("400 Bad Request", [])
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yield "<h1>400 Bad Request</h1>".encode()
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yield "Only one (validate) or two (conn) arguments may be passed as path.".encode()
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return
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if len(split) > 0:
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if len(split) == 1:
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val = True
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else:
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conn = True
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cto = split[1].encode("latin-1").decode("utf-8")
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cfrm = split[0].encode("latin-1").decode("utf-8")
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count = req.args["count"][0] if "count" in req.args and req.args["count"] else 6
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date = req.args["date"][0] if "date" in req.args and req.args["date"] else datetime.datetime.strftime(datetime.datetime.now(pytz.timezone("Europe/Vienna")),"%d.%m.%Y")
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time = req.args["time"][0] if "time" in req.args and req.args["time"] else datetime.datetime.strftime(datetime.datetime.now(pytz.timezone("Europe/Vienna")),"%H:%M")
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mode = True if "mode" in req.args and req.args["mode"] and req.args["mode"][0].lower() == "arr" else False
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details = True if "details" in req.args else False
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try:
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rtype = "conn" if conn else "val" if val else args["type"][0]
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count = int(count)
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if count < 0 or count > 10:
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raise ValueError()
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except:
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re("400 Bad Request", [])
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yield "<h1>400 Bad Request</h1>".encode()
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yield "A request type must be provided.".encode()
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return
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content = "<h1>400 Bad Request</h1>\n"
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content += "The \"count\" value must be a value between 0 and 10."
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return Response(HTTP400, HTML, content)
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if rtype.lower() in ["conn", "connection"]:
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status, ctype, content = doConn(args, cfrm, cto)
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re(status, [("Content-Type", ctype)])
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yield content.encode()
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return
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try:
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outtime = datetime.datetime.strptime("%s %s" % (date, time), "%d.%m.%Y %H:%M")
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except:
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content = "<h1>400 Bad Request</h1>\n"
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content += "The \"date\" value must be in DD.MM.YYYY format, the \"time\" value must be in HH:MM format."
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return Response(HTTP400, HTML, content)
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elif rtype.lower() in ["val", "validate"]:
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status, ctype, content = doVal(args, cfrm)
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re(status, [("Content-Type", ctype)])
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yield content.encode()
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return
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via = list(req.args["via"]) if "via" in req.args else None
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elif rtype.lower() in ["closest", "close", "near", "nearby"]:
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status, ctype, content = doNearby(args)
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re(status, [("Content-Type", ctype)])
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yield content.encode()
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return
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if via and len(via) > 3:
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content = "<h1>400 Bad Request</h1>\n"
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content += "It is not possible to route through more than three \"via\" stations."
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return Response(HTTP400, HTML, content)
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elif rtype.lower() in ["radar", "live"]:
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status, ctype, content = doRadar(args)
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re(status, [("Content-Type", ctype)])
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yield content.encode()
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return
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try:
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content = workers.conn.worker(frm, to, count, outtime, mode, details, req.json, via)
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except Exception as e:
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content = "<h1>500 Internal Server Error</h1>\n"
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if "debug" in req.args:
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content += str(e)
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return Response(HTTP500, HTML, content)
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return Response(HTTP200, JSON if req.json else XML, content)
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def doVal(req):
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try:
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try:
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name = (req.cfrm or req.args["name"][0]).encode("latin-1").decode("utf-8")
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except UnicodeDecodeError:
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name = req.cfrm or req.args["name"][0]
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if not name:
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raise ValueError()
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except Exception:
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content = "<h1>400 Bad Request</h1>\n"
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content += "A \"name\" value is required for this type of request."
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return Response(HTTP400, HTML, content)
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try:
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content = workers.val.worker(name, req.json)
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except Exception as e:
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content = "<h1>500 Internal Server Error</h1>\n"
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if "debug" in req.args:
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content += str(e).encode()
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return Response(HTTP500, HTML, content)
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return Response(HTTP200, JSON if req.json else XML, content)
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def doNearby(req):
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try:
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lat = float(req.args["lat"][0].replace(",", "."))
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lon = float(req.args["lon"][0].replace(",", "."))
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if (not lat and not lat == float(0)) or (not lon and not lon == float(0)):
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raise ValueError()
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except:
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content = "<h1>400 Bad Request</h1>\n"
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content += "\"lat\" and \"lon\" values are required for this type of request."
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return Response(HTTP400, HTML, content)
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distance = req.args["distance"][0] if "distance" in req.args and req.args["distance"] else 1000
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try:
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distance = int(distance)
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if distance < 0 or distance > 10000:
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raise ValueError()
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except:
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content = "<h1>400 Bad Request</h1>\n"
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content += "\"distance\" must be a value between 0 and 10000."
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return Response(HTTP400, HTML, content)
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try:
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content = workers.closest.worker(lat, lon, distance, req.json)
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except Exception as e:
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content = "<h1>500 Internal Server Error</h1>"
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if "debug" in req.args:
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content += repr(e)
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return Response(HTTP500, HTML, content)
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return Response(HTTP200, JSON if req.json else XML, content)
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def doRadar(req):
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trains = req.args["train"] if "train" in req.args else None
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try:
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content = workers.radar.worker(trains, req.json)
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except Exception as e:
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content = "<h1>500 Internal Server Error</h1>\n"
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if "debug" in req.args:
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content += repr(e)
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return Response(HTTP500, HTML, content)
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return Response(HTTP200, JSON if req.json else XML, content)
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def doNot(req):
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content = "<h1>400 Bad Request</h1>"
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content += "The request type you submitted is invalid."
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return Response(HTTP400, HTML, content)
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def application(env, re):
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try:
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req = Request(env)
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if req.rtype in ["conn", "connection"]:
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res = doConn(req)
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elif req.rtype in ["val", "validate"]:
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res = doVal(req)
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elif req.rtype in ["closest", "close", "near", "nearby"]:
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res = doNearby(req)
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elif req.rtype in ["radar", "live"]:
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res = doRadar(req)
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else:
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res = doNot(req)
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except IllegalMethodException as e:
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res = Response(HTTP405, HTML, str(e))
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except InvalidArgumentException as e:
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res = Response(HTTP400, HTML, str(e))
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re(res.status, [("Content-Type", res.ctype)])
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yield res.content.encode()
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return
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else:
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re("400 Bad Request", [])
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yield "<h1>400 Bad Request</h1>".encode()
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yield "The request type you submitted is invalid.".encode()
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return
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