forked from mirrors/kore
56 lines
2.0 KiB
Python
56 lines
2.0 KiB
Python
#
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# Copyright (c) 2017-2018 Joris Vink <joris@coders.se>
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#
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# Permission to use, copy, modify, and distribute this software for any
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# purpose with or without fee is hereby granted, provided that the above
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# copyright notice and this permission notice appear in all copies.
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#
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# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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#
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# Asynchronous postgresql queries with Python.
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import json
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import kore
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class KoreApp:
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def configure(self, args):
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# Register the path to our database when Kore starts.
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kore.dbsetup("db", "host=/tmp dbname=test")
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# A handler that returns 200 OK with hello as body.
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def hello(self, req):
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req.response(200, b'hello\n')
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#
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# The query handler that fires of the query and returns a coroutine.
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#
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# Kore will resume this handler when the query returns a result or
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# is successful.
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#
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# The kore.pgsql() method can throw exceptions, most notably a
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# GeneratorExit in case the client connection went away before
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# the query was able to be completed.
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#
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# In this example we're not doing any exception handling.
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#
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async def query(self, req):
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result = await kore.dbquery("db", "SELECT * FROM coders")
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req.response(200, json.dumps(result).encode("utf-8"))
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#
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# A slow query that returns after 10 seconds.
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#
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async def slow(self, req):
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result = await kore.dbquery("db", "SELECT * FROM pg_sleep(10)")
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req.response(200, json.dumps(result).encode("utf-8"))
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# Set the application Kore will run to our class.
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koreapp = KoreApp()
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