Mercurial > p > roundup > code
annotate scripts/schema_diagram.py @ 6747:d32d43e4a5ba
wsgi can cache tracker instance enabled by feature flag.
Patch by Marcus Priesch caches a loaded tracker instance and reuse it
for future client sessions.
It is enabled by a feature flag in wsgi.py since it arrived during the
2.2.0 beta period.
The provided wsgi.py is modified to enable it. Testing is run with
flag enabled and disabled.
Ralf Schlatterbeck and Marcus tested it on one of their larger more
complex trackers and it sped up the response time to a client request
by a factor of 3 (270ms down to about 80-85ms).
| author | John Rouillard <rouilj@ieee.org> |
|---|---|
| date | Sat, 02 Jul 2022 14:04:00 -0400 |
| parents | 23b8e6067f7c |
| children | 9c3ec0a5c7fc |
| rev | line source |
|---|---|
| 1166 | 1 #! /usr/bin/python |
| 2 # | |
| 3 # Schema diagram generator contributed by Stefan Seefeld of the fresco | |
| 4 # project http://www.fresco.org/. | |
| 5 # | |
| 6 # It generates a 'dot file' that is then fed into the 'dot' | |
| 7 # tool (http://www.graphviz.org) to generate a graph: | |
| 8 # | |
| 9 # %> ./schema.py | |
| 10 # %> dot -Tps schema.dot -o schema.ps | |
| 11 # %> gv schema.ps | |
| 12 # | |
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13 from __future__ import print_function |
| 1166 | 14 import sys |
| 15 import roundup.instance | |
| 16 | |
| 17 # open the instance | |
| 18 instance = roundup.instance.open(sys.argv[1]) | |
| 19 db = instance.open() | |
| 20 | |
| 21 # diagram preamble | |
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22 print('digraph schema {') |
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23 print('size="8,6"') |
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24 print('node [shape="record" bgcolor="#ffe4c4" style=filled]') |
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25 print('edge [taillabel="1" headlabel="1" dir=back arrowtail=ediamond]') |
| 1166 | 26 |
| 27 # get all the classes | |
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28 types = list(db.classes.keys()) |
| 1166 | 29 |
| 30 # one record node per class | |
| 31 for i in range(len(types)): | |
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32 print('node%d [label=\"{%s|}"]'%(i, types[i])) |
| 1166 | 33 |
| 34 # now draw in the relations | |
| 35 for name in db.classes.keys(): | |
| 36 type = db.classes[name] | |
| 37 attributes = type.getprops() | |
| 38 for a in attributes.keys(): | |
| 39 attribute = attributes[a] | |
| 40 if isinstance(attribute, roundup.hyperdb.Link): | |
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41 print('node%d -> node%d [label=%s]'%(types.index(name), |
| 1166 | 42 types.index(attribute.classname), |
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43 a)) |
| 1166 | 44 elif isinstance(attribute, roundup.hyperdb.Multilink): |
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45 print('node%d -> node%d [taillabel="*" label=%s]'%(types.index(name), |
| 1166 | 46 types.index(attribute.classname), |
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47 a)) |
| 1166 | 48 # all done |
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49 print('}') |