diff options
Diffstat (limited to 'pyinfluxtools/__init__.py')
| -rw-r--r-- | pyinfluxtools/__init__.py | 240 |
1 files changed, 109 insertions, 131 deletions
diff --git a/pyinfluxtools/__init__.py b/pyinfluxtools/__init__.py index 7654051..7ce39aa 100644 --- a/pyinfluxtools/__init__.py +++ b/pyinfluxtools/__init__.py @@ -2,40 +2,35 @@ import re import sys -from pprint import pprint -from funcparserlib.lexer import make_tokenizer, Token, LexerError -from funcparserlib.parser import (some, a, maybe, many, finished, skip) - - +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. - >> lines = [] - >> lines += ['cpu'] - >> lines += ['cpu,host=serverA,region=us-west'] - >> 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 - cpu,host="serverA",region="us-west" + >>> 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) - @staticmethod - def parseFile(file): - for line in file.readlines(): - yield Write.parse(line) - class Write(object): + def __init__(self, key, tags, fields, timestamp=None): self.key = key self.tags = tags @@ -48,22 +43,21 @@ class Write(object): if isinstance(self.fields, dict): self.fields = self.fields.items() - @staticmethod - def tokenize(str): - specs = [ - ('Comma', (r',',)), - ('Space', (r' ',)), - ('Equal', (r'=',)), - ('Quote', (r'"',)), - ('Escape', (r'\\',)), - ('Int', (r'[0-9]+',)), - ('Float', (r'-?(\.[0-9]+)|([0-9]+(\.[0-9]*)?)',)), - ('Text', (r'[A-Za-z\200-\377_0-9-\.]+',)), - ] - useless = [] #'Comma', 'NL', 'Space', 'Header', 'Footer'] - t = make_tokenizer(specs) - return [x for x in t(str) if x.type not in useless] + specs = [ + ('Comma', (r',',)), + ('Space', (r' ',)), + ('Equal', (r'=',)), + ('Quote', (r'"',)), + ('Escape', (r'\\',)), + ('Int', (r'[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): @@ -91,7 +85,7 @@ class Write(object): >>> Write.parse('cpu host=server\\ A,region=us\\ west') <Write key=cpu tags=[] fields=[('host', 'server A'), ('region', 'us west')] timestamp=None> - >>> Write.parse('cpu ho\=st=server\ A,region=us\ west') + >>> Write.parse('cpu ho\\=st=server\ A,region=us\ west') <Write key=cpu tags=[] fields=[('ho=st', 'server A'), ('region', 'us west')] timestamp=None> >>> print(Write.parse('cpu ho\=st=server\ A,region=us\ west')) @@ -109,10 +103,10 @@ class Write(object): >>> print(Write.parse('cpu field12=12 123123123')) cpu field12=12 123123123 - >> print(Write.parse('cpu field12=12 1231abcdef123')) - Traceback (most recent call last): - ... - funcparserlib.parser.NoParseError: should have reached <EOF>: 1,20-1,28: Text 'abcdef123' + >>> 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" @@ -129,37 +123,72 @@ class Write(object): >>> Write.parse('"measurement\ with\ quotes",tag\ key\ with\ spaces=tag\,value\,with"commas" field_key\\\\\\\\="string field value, only \\\\" need be quoted"') <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> - #>>> Write.parse('disk_free value=442221834240,working\ directories="C:\My Documents\Stuff for examples,C:\My Documents"') - #Fails.... this format is just crazy + >>> 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\\\\\\="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" + + >>> print(Write.parse('foo field0=tag,field1=t,field2=true,field3=True,field4=TRUE')) + foo field0="tag",field1=True,field2=True,field3=True,field4=True + + >>> print(Write.parse('foo field1=f,field2=false,field3=False,field4=FALSE,field5=fag')) + foo field1=False,field2=False,field3=False,field4=False,field5="fag" + + >>> print(Write.parse('"measurement\ with\ quotes",tag\ key\ with\ spaces=tag\,value\,with"commas" field_key\\\\\\="string field value, only \\\\" need be quoted"')) + "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> """ tokval = lambda t: t.value - toksval = lambda x: "".join(x) - token = lambda type: some(lambda t: t.type == type) - - space = token('Space') >> tokval - comma = token('Comma') >> tokval - quote = token('Quote') >> tokval - escape_space = token('Escape') + token('Space') >> (lambda x: " ") - escape_comma = token('Escape') + token('Comma') >> (lambda x: ",") - escape_equal = token('Escape') + token('Equal') >> (lambda x: "=") - escape_quote = token('Escape') + token('Quote') >> (lambda x: "\"") - escape_escape = token('Escape') + token('Escape') >> (lambda x: "\\") - plain_int = token('Int') >> (lambda t: int(tokval(t))) - plain_int_text = token('Int') >> tokval - plain_float = token('Float') >> (lambda t: float(tokval(t))) - plain_float_text = token('Float') >> tokval - plain_bool = some( lambda t: t.type == 'Text' and t.value.lower() in ["t", "true"]) >> (lambda t: True) | \ - some( lambda t: t.type == 'Text' and t.value.lower() in ["f", "false"]) >> (lambda t: False) - plain_text = token("Text") >> tokval - - identifier = many( plain_text | escape_space | escape_comma | escape_escape | plain_int_text | token('Quote') >> tokval ) >> toksval - quoted_text = many( escape_escape | escape_quote | plain_text | space | comma | plain_int_text | plain_float_text) >> (lambda x: "".join(x)) - unquoted_text = many( escape_space | escape_comma | escape_equal | escape_escape | quote | plain_text | plain_int_text ) >> toksval - string_value = ( skip(token('Quote')) + quoted_text + skip(token('Quote')) ) | unquoted_text - - kv_value = plain_int | plain_float | plain_bool | string_value - kv = string_value + skip(token('Equal')) + kv_value >> (lambda x: (x[0],x[1])) + joinval = "".join + someToken = lambda type: some(lambda t: t.type == type) + true_values = ["t", "true", "True", "TRUE"] + false_values = ["f", "false", "False", "FALSE"] + + char = someToken('Char') >> tokval + space = someToken('Space') >> tokval + comma = someToken('Comma') >> tokval + quote = someToken('Quote') >> tokval + escape = someToken('Escape') >> tokval + equal = someToken('Equal') >> tokval + + 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 | escape_space | escape_comma | + 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 + string_value = quoted_text | unquoted_text >> \ + (lambda s: s in true_values and True + or s in false_values and False + or s not in false_values and s) + + kv_value = plain_int | plain_float | string_value + kv = string_value + \ + skip(equal) + kv_value >> (lambda x: (x[0], x[1])) def setter(obj, propert): def r(val): @@ -167,70 +196,21 @@ class Write(object): return (propert, val) return r - key = identifier - tags = many( skip(token('Comma')) + kv) >> (lambda x: x) # (lambda x: [x[0]] + x[1]) - fields = ( kv + many( skip(token('Comma')) + kv ) ) >> (lambda x: [x[0]] + x[1]) - timestamp = plain_int + tags = many(skip(comma) + kv) >> (lambda x: x) + fields = (kv + many(skip(comma) + kv)) >> \ + (lambda x: [x[0]] + x[1]) write = Write(None, None, None, None) - toplevel = (key >> setter(write, "key")) + \ - maybe( tags >> setter(write, "tags") ) + \ - ( skip(token('Space')) + (fields >> setter(write, "fields")) ) + \ - maybe( skip(token('Space')) + timestamp >> setter(write, "timestamp") ) + \ - skip(finished) >> (lambda x: x) - try: - result = toplevel.parse(Write.tokenize(line)) - except: - pprint(line, stream=sys.stderr) - pprint(write, stream=sys.stderr) - pprint(Write.tokenize(line), stream=sys.stderr) - raise - #pprint({line : result}, stream=sys.stderr) + 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 unescape(string): - return re.sub(r'(?<!\\)([\\,=])', '', string) - - def unescape_value(string): - if string.startswith("\"") and string.endswith("\""): - string = re.sub(r'(?<!\\)(["])', '', string) - else: - string = unescape(string) - if re.match("^[0-9]+$", string): - return int(string) - elif re.match("^[0-9]*\.[0-9]*$", string): - return float(string) - elif string.lower() in ["t", "true", "f", "false"]: - return string.lower in ["t", "true"] - else: - return string - - args = re.split(r"(?<!\\) ", line) - key, *tags = re.split(r"(?<!\\),", args[0]) - key = unescape(key) - - if tags: - tags = map(lambda tag: re.split(r"(?<!\\)=", tag), tags) - tags = map(lambda tag: (unescape(tag[0]), unescape_value(tag[1])), tags) - tags = list(tags) - else: - tags = None - - if len(args) > 1: - fields = re.split(r"(?<!\\),", args[1]) - fields = map(lambda field: re.split(r"(?<!\\)=", field), fields) - fields = map(lambda field: (unescape(field[0]), unescape_value(field[1])), fields) - fields = list(fields) - else: - fields = None - - if len(args) > 2: - timestamp = int(args[2]) - else: - timestamp = None - - return Write(key, tags, fields, timestamp) - def __repr__(self): return "<{} key={} tags={} fields={} timestamp={}>".format( self.__class__.__name__, self.key, self.tags, self.fields, self.timestamp) @@ -244,13 +224,12 @@ class Write(object): return str(obj) else: obj = str(obj) - return "\"" + obj.replace("\"","\\\"") + "\"" - + return "\"" + obj.replace("\"", "\\\"") + "\"" def escape_kv(kvlist): return ",".join( - map(lambda kv: escape_key(kv[0]) + "=" + escape_value(kv[1]), - kvlist)) + map(lambda kv: escape_key(kv[0]) + "=" + escape_value(kv[1]), + kvlist)) result = escape_key(self.key) @@ -272,4 +251,3 @@ class Write(object): if __name__ == "__main__": import doctest doctest.testmod() - |