6ffab589a4
Remove six Replace the following items with Python 3 style code. - six.PY3 - six.xrange - six.string_types - six.binary_type - six.iteritems - six.unichr - six.wraps - six.get_function_code - six.PY2 - six.b - six.moves.range - reraise - six.text_type Story: 2008305 Task: 41301 Change-Id: Idf64154a013b53c7db771a25f1c63c1295e354e6
91 lines
3.4 KiB
Python
91 lines
3.4 KiB
Python
# (C) Copyright 2017 Hewlett Packard Enterprise Development LP
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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
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# 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 pyparsing
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from monasca_common.monasca_query_language import query_structures
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COMMA = pyparsing.Suppress(pyparsing.Literal(","))
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LPAREN = pyparsing.Suppress(pyparsing.Literal("("))
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RPAREN = pyparsing.Suppress(pyparsing.Literal(")"))
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LBRACE = pyparsing.Suppress(pyparsing.Literal("{"))
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RBRACE = pyparsing.Suppress(pyparsing.Literal("}"))
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LBRACKET = pyparsing.Suppress(pyparsing.Literal("["))
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RBRACKET = pyparsing.Suppress(pyparsing.Literal("]"))
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MINUS = pyparsing.Literal("-")
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integer_number = pyparsing.Word(pyparsing.nums)
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decimal_number = (pyparsing.Optional(MINUS) + integer_number +
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pyparsing.Optional("." + integer_number))
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decimal_number.setParseAction(lambda tokens: float("".join(tokens)))
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# Initialize non-ascii unicode code points in the Basic Multilingual Plane.
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unicode_printables = u''.join(
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chr(c) for c in range(128, 65536) if not chr(c).isspace())
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# Does not like comma. No Literals from above allowed.
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valid_identifier_chars = (
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(unicode_printables + pyparsing.alphanums + ".-_#$%&'*+/:;?@[\\]^`|"))
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metric_name = (
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pyparsing.Word(pyparsing.alphas, valid_identifier_chars, min=1, max=255)("metric_name"))
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dimension_name = pyparsing.Word(valid_identifier_chars + ' ', min=1, max=255)
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dimension_value = pyparsing.Word(valid_identifier_chars + ' ', min=1, max=255)
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dim_comparison_op = pyparsing.oneOf("=")
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dimension = dimension_name + dim_comparison_op + dimension_value
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dimension.setParseAction(query_structures.Dimension)
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dimension_list = pyparsing.Group((LBRACE + pyparsing.Optional(
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pyparsing.delimitedList(dimension)) + RBRACE))
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metric = (metric_name + pyparsing.Optional(dimension_list) |
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pyparsing.Optional(metric_name) + dimension_list)
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metric.addParseAction(query_structures.MetricSelector)
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source = pyparsing.Keyword("source")
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source_expression = source + metric
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source_expression.addParseAction(query_structures.SourceExpression)
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targets = pyparsing.Keyword("targets")
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targets_expression = targets + metric
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targets_expression.addParseAction(query_structures.TargetsExpression)
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excludes = pyparsing.Keyword("excluding")
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excludes_expression = excludes + metric
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excludes_expression.addParseAction(query_structures.ExcludesExpression)
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group_by = pyparsing.Keyword("group by")
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group_by_expr = group_by + pyparsing.delimitedList(dimension_name)
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group_by_expr.addParseAction(query_structures.GroupByExpression)
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grammar = (pyparsing.Optional(source_expression) +
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pyparsing.Optional(targets_expression) +
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pyparsing.Optional(excludes_expression) +
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pyparsing.Optional(group_by_expr))
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grammar.addParseAction(query_structures.Rule)
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class RuleExpressionParser(object):
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def __init__(self, expr):
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self._expr = expr
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def parse(self):
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parse_result = grammar.parseString(self._expr, parseAll=True)
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return parse_result
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