diff options
Diffstat (limited to 'pyinfluxtools')
| -rw-r--r-- | pyinfluxtools/__init__.py | 293 |
1 files changed, 0 insertions, 293 deletions
diff --git a/pyinfluxtools/__init__.py b/pyinfluxtools/__init__.py deleted file mode 100644 index 68146ff..0000000 --- a/pyinfluxtools/__init__.py +++ /dev/null @@ -1,293 +0,0 @@ -#!/usr/bin/env python3 -import re -import sys -from functools import reduce - -from funcparserlib.lexer import make_tokenizer -from funcparserlib.parser import ( - some, maybe, many, finished, skip, NoParseError) - - -class WriteRequest(object): - - @staticmethod - def parse(lines): - """ - Parse multiple Write objects separeted by new-line character. - - >>> print(Write.parse("foo b=1")) - foo b=1 - - >>> lines = [] - >>> lines += ['cpu field=123'] - >>> lines += ['cpu,host=serverA,region=us-west field1=1,field2=2'] - >>> lines += ['cpu,host=serverA,region=us-west field1=1,field2=2 1234'] - >>> print("\\n".join(map(str, WriteRequest.parse("\\n".join(lines))))) - cpu field=123 - cpu,host=serverA,region=us-west field1=1,field2=2 - cpu,host=serverA,region=us-west field1=1,field2=2 1234 - """ - writes = map(Write.parse, lines.split("\n")) - return list(writes) - - -class Write(object): - - def __init__(self, key, tags, fields, timestamp=None): - self.key = key - self.tags = tags - self.fields = fields - self.timestamp = timestamp - - if isinstance(self.tags, dict): - self.tags = self.tags.items() - - if isinstance(self.fields, dict): - self.fields = self.fields.items() - - specs = [ - ('Comma', (r',',)), - ('Space', (r' ',)), - ('Equal', (r'=',)), - ('Quote', (r'"',)), - ('Escape', (r'\\',)), - ('Int', (r'[0-9]+(?![0-9\.])',)), - ('Float', (r'-?(\.[0-9]+)|([0-9]+(\.[0-9]*)?)',)), - ('Char', (r'.',)), - ] - - @staticmethod - def tokenize(line): - tokenizer = make_tokenizer(Write.specs) - return list(tokenizer(line)) - - @staticmethod - def parse(line): - """ - Parse a line from the POST request into a Write object. - - >>> line='cpu a=1'; Write.parse(line); print(Write.parse(line)) - <Write key=cpu tags=[] fields=[('a', 1)] timestamp=None> - cpu a=1 - - >>> print(Write.parse('yahoo.CHFGBP\\=X.ask,tag=foobar value=10.2')) - yahoo.CHFGBP\=X.ask,tag=foobar value=10.2 - - >>> Write.parse('cpu,host=serverA,region=us-west foo="bar"') - <Write key=cpu tags=[('host', 'serverA'), ('region', 'us-west')] fields=[('foo', 'bar')] timestamp=None> - - >>> print(Write.parse('cpu host="serverA",region="us-west"')) - cpu host="serverA",region="us-west" - - >>> line='cpu\\,01 host="serverA",region="us-west"'; \\ - ... Write.parse(line); print(Write.parse(line)) - <Write key=cpu,01 tags=[] fields=[('host', 'serverA'), ('region', 'us-west')] timestamp=None> - cpu\,01 host="serverA",region="us-west" - - >>> Write.parse('cpu host="server A",region="us west"') - <Write key=cpu tags=[] fields=[('host', 'server A'), ('region', 'us west')] timestamp=None> - - >>> line='cpu ho\\=st="server A",region="us west"'; \\ - ... Write.parse(line); print(Write.parse(line)) - <Write key=cpu tags=[] fields=[('ho=st', 'server A'), ('region', 'us west')] timestamp=None> - cpu ho\=st="server A",region="us west" - - >>> print(Write.parse('cpu,ho\=st=server\ A field=123')) - cpu,ho\=st=server\ A field=123 - - # error: double name is accepted - >>> print(Write.parse('cpu,foo=bar,foo=bar field=123,field=123')) - cpu,foo=bar,foo=bar field=123,field=123 - - >>> print(Write.parse('cpu field12=12')) - cpu field12=12 - - >>> print(Write.parse('cpu field12=12 123123123')) - cpu field12=12 123123123 - - >>> try: print(Write.parse('cpu field12=12 1231abcdef123')) - ... except NoParseError: pass - - >>> print(Write.parse('cpu,x=3,y=4,z=6 field\ name="HH \\\\\\"World",x="asdf foo"')) - cpu,x=3,y=4,z=6 field\\ name="HH \\"World",x="asdf foo" - - >>> print(Write.parse("cpu,x=3 field\ name=\\"HH \\\\\\"World\\",x=\\"asdf foo\\"")) - cpu,x=3 field\\ name="HH \\"World",x="asdf foo" - - >>> print(Write.parse("cpu foo=\\"bar\\" 12345")) - cpu foo="bar" 12345 - - >>> line='"measurement\ with\ quotes",tag\ key\ with\ spaces=tag\,value\,with"commas" field_key\\\\\\="string field value, only \\\\" need be quoted"'; \\ - ... Write.parse(line); print(Write.parse(line)) - <Write key="measurement with quotes" tags=[('tag key with spaces', 'tag,value,with"commas"')] fields=[('field_key\\\\', 'string field value, only " need be quoted')] timestamp=None> - "measurement\ with\ quotes",tag\ key\ with\ spaces=tag\,value\,with"commas" field_key\\\\="string field value, only \\\" need be quoted" - - >>> Write.parse('disk_free value=442221834240,working\ directories="C:\My Documents\Stuff for examples,C:\My Documents"') - <Write key=disk_free tags=[] fields=[('value', 442221834240), ('working directories', 'C:\\\\My Documents\\\\Stuff for examples,C:\\\\My Documents')] timestamp=None> - - >>> Write.parse('disk_free value=442221834240,working\ directories="C:\My Documents\Stuff for examples,C:\My Documents" 123') - <Write key=disk_free tags=[] fields=[('value', 442221834240), ('working directories', 'C:\\\\My Documents\\\\Stuff for examples,C:\\\\My Documents')] timestamp=123> - - >>> print(Write.parse('foo,foo=2 "field key with space"="string field"')) - foo,foo=2 field\ key\ with\ space="string field" - - >>> print(Write.parse('foo,foo=2 field_key\\\\\\="string field"')) - foo,foo=2 field_key\\\\="string field" - - >>> print(Write.parse('foo,foo=2 field_key="string\\\\" field"')) - foo,foo=2 field_key="string\\" field" - - >>> line='foo field0="tag",field1=t,field2=true,field3=True,field4=TRUE'; \\ - ... Write.parse(line); print(Write.parse(line)) - <Write key=foo tags=[] fields=[('field0', 'tag'), ('field1', True), ('field2', True), ('field3', True), ('field4', True)] timestamp=None> - foo field0="tag",field1=True,field2=True,field3=True,field4=True - - >>> line='foo field1=f,field2=false,field3=False,field4=FALSE,field5="fag"'; \\ - ... Write.parse(line); print(Write.parse(line)) - <Write key=foo tags=[] fields=[('field1', False), ('field2', False), ('field3', False), ('field4', False), ('field5', 'fag')] timestamp=None> - foo field1=False,field2=False,field3=False,field4=False,field5="fag" - - >>> line='"measurement\ with\ quotes",tag\ key\ with\ spaces=tag\,value\,with"commas" field_key\\\\\\="string field value, only \\\\" need be quoted"'; \\ - ... Write.parse(line); print(Write.parse(line)) - <Write key="measurement with quotes" tags=[('tag key with spaces', 'tag,value,with"commas"')] fields=[('field_key\\\\', 'string field value, only " need be quoted')] timestamp=None> - "measurement\ with\ quotes",tag\ key\ with\ spaces=tag\,value\,with"commas" field_key\\\\="string field value, only \\" need be quoted" - - >>> Write.parse('"measurement\ with\ quotes" foo=1') - <Write key="measurement with quotes" tags=[] fields=[('foo', 1)] timestamp=None> - - >>> print(Write.parse('K.5S,Ccpvo="eSLyE" value="7F\\\\\\\\\\\\""')) - K.5S,Ccpvo="eSLyE" value="7F\\\\\\\\\\\"" - - >>> print(Write.parse('K.5S,Ccpvo=a\\ b value=1')) - K.5S,Ccpvo=a\\ b value=1 - - >>> print(Write('test', [('a','b')], [('value','asd\\\\')])) - test,a=b value="asd\\\\" - """ - - tokval = lambda t: t.value - joinval = "".join - someToken = lambda type: some(lambda t: t.type == type) - someCharValue = lambda string: \ - reduce(lambda a, b: a + b, - map(lambda char: - some(lambda t: t.value == char) >> tokval, - string)) >> joinval - - char = someToken('Char') >> tokval - space = someToken('Space') >> tokval - comma = someToken('Comma') >> tokval - quote = someToken('Quote') >> tokval - escape = someToken('Escape') >> tokval - equal = someToken('Equal') >> tokval - true_value = (someCharValue("true") | someCharValue("t") | - someCharValue("True") | someCharValue("TRUE") | someCharValue("T")) - false_value = (someCharValue("false") | someCharValue("f") | - someCharValue("False") | someCharValue("FALSE") | someCharValue("F")) - - escape_space = skip(escape) + space >> joinval - escape_comma = skip(escape) + comma >> joinval - escape_equal = skip(escape) + equal >> joinval - escape_quote = skip(escape) + quote >> joinval - escape_escape = skip(escape) + escape >> joinval - - plain_int_text = someToken('Int') >> tokval - plain_int = plain_int_text >> (lambda v: int(v)) - plain_float_text = someToken('Float') >> tokval - plain_float = plain_float_text >> (lambda v: float(v)) - - identifier = many(char | plain_float_text | plain_int_text | - escape_space | escape_comma | escape_equal | - escape_escape | plain_int_text | quote) >> joinval - quoted_text_ = many(escape_quote | space | plain_int_text | - plain_float_text | char | comma | - escape) >> joinval - quoted_text = skip(quote) + quoted_text_ + skip(quote) - unquoted_text = many(escape_space | escape_comma | - escape_equal | escape_escape | - plain_int_text | char | quote) >> joinval - boolean_value = (true_value >> (lambda s: True) - | false_value >> (lambda s: False)) - - kv_value = plain_int | plain_float | quoted_text | boolean_value - kv = (quoted_text | unquoted_text) + skip(equal) + kv_value >> \ - (lambda x: (x[0], x[1])) - - tag = identifier + skip(equal) + identifier >> (lambda x: (x[0], x[1])) - - def setter(obj, propert): - def r(val): - setattr(obj, propert, val) - return (propert, val) - return r - - tags = many(skip(comma) + tag) >> (lambda x: x) - fields = (kv + many(skip(comma) + kv)) >> \ - (lambda x: [x[0]] + x[1]) - - write = Write(None, None, None, None) - toplevel = (identifier >> setter(write, "key")) + \ - maybe(tags >> setter(write, "tags")) + \ - (skip(space) + (fields >> setter(write, "fields"))) + \ - maybe(skip(space) + plain_int >> setter(write, "timestamp")) + \ - skip(finished) >> (lambda x: x) - - result = toplevel.parse(Write.tokenize(line)) - # pprint(result) - return write - - def __repr__(self): - return "<{} key={} tags={} fields={} timestamp={}>".format( - self.__class__.__name__, self.key, self.tags, self.fields, self.timestamp) - - @staticmethod - def escape_identifier(string): - return re.sub(r'([\\,= ])', '\\\\\\1', string) - - @staticmethod - def escape_tags(taglist): - return ",".join(map(lambda kv: - (Write.escape_identifier(kv[0]) - + "=" + Write.escape_identifier(kv[1])), - taglist)) - - @staticmethod - def escape_value(obj): - if (isinstance(obj, float) - or isinstance(obj, int) - or isinstance(obj, bool)): - return str(obj) - else: - obj = str(obj) - return "\"" + obj.replace("\\", "\\\\").replace("\"", "\\\"") + "\"" - - @staticmethod - def escape_fields(kvlist): - def escape_key(string): - return re.sub(r'(["\\,= ])', '\\\\\\1', string) - - return ",".join( - map(lambda kv: escape_key(kv[0]) + "=" + Write.escape_value(kv[1]), - kvlist)) - - def __str__(self): - result = self.escape_identifier(self.key) - - if self.tags: - result += "," - result += self.escape_tags(self.tags) - - if self.fields: - result += " " - result += self.escape_fields(self.fields) - - if self.timestamp: - result += " " - result += str(self.timestamp) - - return result - - -if __name__ == "__main__": - import doctest - doctest.testmod() |