mirror of
https://github.com/openvswitch/ovs
synced 2025-08-22 09:58:01 +00:00
991559357f
These initial bindings pass a few hundred of the corresponding tests for C implementations of various bits of the Open vSwitch library API. The poorest part of them is actually the Python IDL interface in ovs.db.idl, which has not received enough attention yet. It appears to work, but it doesn't yet support writes (transactions) and it is difficult to use. I hope to improve it as it becomes clear what semantics Python applications actually want from an IDL.
93 lines
2.5 KiB
Python
93 lines
2.5 KiB
Python
# Copyright (c) 2009, 2010 Nicira Networks.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at:
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import codecs
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import getopt
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import sys
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import ovs.json
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def print_json(json):
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if type(json) in [str, unicode]:
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print "error: %s" % json
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return False
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else:
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ovs.json.to_stream(json, sys.stdout)
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sys.stdout.write("\n")
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return True
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def parse_multiple(stream):
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buf = stream.read(4096)
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ok = True
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parser = None
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while len(buf):
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if parser is None and buf[0] in " \t\r\n":
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buf = buf[1:]
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else:
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if parser is None:
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parser = ovs.json.Parser()
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n = parser.feed(buf)
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buf = buf[n:]
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if len(buf):
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if not print_json(parser.finish()):
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ok = False
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parser = None
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if len(buf) == 0:
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buf = stream.read(4096)
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if parser and not print_json(parser.finish()):
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ok = False
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return ok
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def main(argv):
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argv0 = argv[0]
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# Make stdout and stderr UTF-8, even if they are redirected to a file.
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sys.stdout = codecs.getwriter("utf-8")(sys.stdout)
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sys.stderr = codecs.getwriter("utf-8")(sys.stderr)
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try:
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options, args = getopt.gnu_getopt(argv[1:], '', ['multiple'])
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except getopt.GetoptError, geo:
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sys.stderr.write("%s: %s\n" % (argv0, geo.msg))
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sys.exit(1)
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multiple = False
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for key, value in options:
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if key == '--multiple':
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multiple = True
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else:
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sys.stderr.write("%s: unhandled option %s\n" % (argv0, key))
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sys.exit(1)
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if len(args) != 1:
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sys.stderr.write("usage: %s [--multiple] INPUT.json\n" % argv0)
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sys.exit(1)
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input_file = args[0]
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if input_file == "-":
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stream = sys.stdin
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else:
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stream = open(input_file, "r")
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if multiple:
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ok = parse_multiple(stream)
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else:
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ok = print_json(ovs.json.from_stream(stream))
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if not ok:
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sys.exit(1)
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if __name__ == '__main__':
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main(sys.argv)
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