Mercurial > p > roundup > code
annotate scripts/schema_diagram.py @ 5650:e8ca7072c629
Fix Python 3 issues in REST code.
* Need to use .get not .getheader for HTTP headers (see hg commit
fec18298ae02, "Python 3 preparation: HTTP headers handling in
roundup_server.py.").
* Need to use key not cmp with sort (see hg commit 3fa026621f69,
"Python 3 preparation: comparisons.").
* dispatch output must be bytes, not str, otherwise writing it to the
socket (e.g. in roundup-server) will fail.
This fixes issues shown up attempting to access the REST interface
with a browser with Python 3 (as opposed to with the Roundup
testsuite, which also has known REST issues with Python 3).
| author | Joseph Myers <jsm@polyomino.org.uk> |
|---|---|
| date | Sun, 17 Mar 2019 16:25:36 +0000 |
| 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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Python 3 preparation: convert print to a function.
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parents:
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23 print('size="8,6"') |
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Python 3 preparation: convert print to a function.
Joseph Myers <jsm@polyomino.org.uk>
parents:
1166
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24 print('node [shape="record" bgcolor="#ffe4c4" style=filled]') |
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Python 3 preparation: convert print to a function.
Joseph Myers <jsm@polyomino.org.uk>
parents:
1166
diff
changeset
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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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parents:
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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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Python 3 preparation: convert print to a function.
Joseph Myers <jsm@polyomino.org.uk>
parents:
1166
diff
changeset
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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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Python 3 preparation: convert print to a function.
Joseph Myers <jsm@polyomino.org.uk>
parents:
1166
diff
changeset
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43 a)) |
| 1166 | 44 elif isinstance(attribute, roundup.hyperdb.Multilink): |
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Python 3 preparation: convert print to a function.
Joseph Myers <jsm@polyomino.org.uk>
parents:
1166
diff
changeset
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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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Python 3 preparation: convert print to a function.
Joseph Myers <jsm@polyomino.org.uk>
parents:
1166
diff
changeset
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47 a)) |
| 1166 | 48 # all done |
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Python 3 preparation: convert print to a function.
Joseph Myers <jsm@polyomino.org.uk>
parents:
1166
diff
changeset
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49 print('}') |