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Merge pull request #372 from rmmh/g8r-testgrid
Link build results to testgrid (fixes #272).
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,82 @@ | ||
| #!/usr/bin/env python | ||
| # Copyright 2016 The Kubernetes Authors All rights reserved. | ||
| # | ||
| # Licensed under the Apache License, Version 2.0 (the "License"); | ||
| # you may not use this file except in compliance with the License. | ||
| # You may obtain a copy of the License at | ||
| # | ||
| # http://www.apache.org/licenses/LICENSE-2.0 | ||
| # | ||
| # Unless required by applicable law or agreed to in writing, software | ||
| # distributed under the License is distributed on an "AS IS" BASIS, | ||
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| # See the License for the specific language governing permissions and | ||
| # limitations under the License. | ||
|
|
||
| ''' | ||
| A tiny, minimal protobuf2 parser that's able to extract enough information | ||
| to be useful. | ||
| ''' | ||
|
|
||
| import cStringIO as StringIO | ||
|
|
||
|
|
||
| def parse_protobuf(data, schema=None): | ||
| ''' | ||
| Do a simple parse of a protobuf2 given minimal type information. | ||
| Args: | ||
| data: a string containing the encoded protocol buffer. | ||
| schema: a dict containing information about each field number. | ||
| The keys are field numbers, and the values represent: | ||
| - str: the name of the field | ||
| - dict: schema to recursively decode an embedded message. | ||
| May contain a 'name' key to name the field. | ||
| Returns: | ||
| dict: mapping from fields to values. The fields may be strings instead of | ||
| numbers if schema named them, and the value will *always* be | ||
| a list of values observed for that key. | ||
| ''' | ||
| if schema is None: | ||
| schema = {} | ||
|
|
||
| buf = StringIO.StringIO(data) | ||
|
|
||
| def read_varint(): | ||
| out = 0 | ||
| shift = 0 | ||
| c = 0x80 | ||
| while c & 0x80: | ||
| c = ord(buf.read(1)) | ||
| out = out | ((c & 0x7f) << shift) | ||
| shift += 7 | ||
| return out | ||
|
|
||
| values = {} | ||
|
|
||
| while buf.tell() < len(data): | ||
| key = read_varint() | ||
| wire_type = key & 0b111 | ||
| field_number = key >> 3 | ||
| field_name = field_number | ||
| if wire_type == 0: | ||
| value = read_varint() | ||
| elif wire_type == 1: # 64-bit | ||
| value = buf.read(8) | ||
| elif wire_type == 2: # length-delim | ||
| length = read_varint() | ||
| value = buf.read(length) | ||
| if isinstance(schema.get(field_number), basestring): | ||
| field_name = schema[field_number] | ||
| elif field_number in schema: | ||
| # yes, I'm using dynamic features of a dynamic language. | ||
| # pylint: disable=redefined-variable-type | ||
| value = parse_protobuf(value, schema[field_number]) | ||
| field_name = schema[field_number].get('name', field_name) | ||
| elif wire_type == 5: # 32-bit | ||
| value = buf.read(4) | ||
| else: | ||
| raise ValueError('unhandled wire type %d' % wire_type) | ||
| values.setdefault(field_name, []).append(value) | ||
|
|
||
| return values |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,56 @@ | ||
| # Copyright 2016 The Kubernetes Authors All rights reserved. | ||
| # | ||
| # Licensed under the Apache License, Version 2.0 (the "License"); | ||
| # you may not use this file except in compliance with the License. | ||
| # You may obtain a copy of the License at | ||
| # | ||
| # http://www.apache.org/licenses/LICENSE-2.0 | ||
| # | ||
| # Unless required by applicable law or agreed to in writing, software | ||
| # distributed under the License is distributed on an "AS IS" BASIS, | ||
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| # See the License for the specific language governing permissions and | ||
| # limitations under the License. | ||
|
|
||
| import unittest | ||
|
|
||
| import pb_glance | ||
|
|
||
|
|
||
| def tostr(data): | ||
| if isinstance(data, list): | ||
| return ''.join(c if isinstance(c, str) else chr(c) for c in data) | ||
| return data | ||
|
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||
|
|
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| class PBGlanceTest(unittest.TestCase): | ||
| def expect(self, data, expected, types=None): | ||
| result = pb_glance.parse_protobuf(tostr(data), types) | ||
| self.assertEqual(result, expected) | ||
|
|
||
| def test_basic(self): | ||
| self.expect( | ||
| [0, 1, # varint | ||
| 0, 0x96, 1, # multi-byte varint | ||
| (1<<3)|1, 'abcdefgh', # 64-bit | ||
| (2<<3)|2, 5, 'value', # length-delimited (string) | ||
| (3<<3)|5, 'abcd', # 32-bit | ||
| ], | ||
| { | ||
| 0: [1, 150], | ||
| 1: ['abcdefgh'], | ||
| 2: ['value'], | ||
| 3: ['abcd'], | ||
| }) | ||
|
|
||
| def test_embedded(self): | ||
| self.expect([2, 2, 3<<3, 1], {0: [{3: [1]}]}, {0: {}}) | ||
|
|
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| def test_field_names(self): | ||
| self.expect([2, 2, 'hi'], {'greeting': ['hi']}, {0: 'greeting'}) | ||
|
|
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| def test_embedded_names(self): | ||
| self.expect( | ||
| [2, 4, (3<<3)|2, 2, 'hi'], | ||
| {'msg': [{'greeting': ['hi']}]}, | ||
| {0: {'name': 'msg', 3: 'greeting'}}) |
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