mirror of
https://github.com/mongodb/mongo.git
synced 2024-11-24 16:46:00 +01:00
326 lines
9.6 KiB
Python
Executable File
326 lines
9.6 KiB
Python
Executable File
#!/usr/bin/env python
|
|
|
|
"""Produces a report of all assertions in the MongoDB server codebase.
|
|
|
|
Parses .cpp files for assertions and verifies assertion codes are distinct.
|
|
Optionally replaces zero codes in source code with new distinct values.
|
|
"""
|
|
|
|
import bisect
|
|
import os
|
|
import re
|
|
import sys
|
|
import utils
|
|
from collections import defaultdict, namedtuple
|
|
from optparse import OptionParser
|
|
|
|
ASSERT_NAMES = [ "uassert" , "massert", "fassert", "fassertFailed" ]
|
|
MINIMUM_CODE = 10000
|
|
|
|
codes = []
|
|
|
|
# Each AssertLocation identifies the C++ source location of an assertion
|
|
AssertLocation = namedtuple( "AssertLocation", ['sourceFile', 'lineNum', 'lines', 'code'] )
|
|
|
|
|
|
# Of historical interest only
|
|
def assignErrorCodes():
|
|
cur = MINIMUM_CODE
|
|
for root in ASSERT_NAMES:
|
|
for x in utils.getAllSourceFiles():
|
|
print( x )
|
|
didAnything = False
|
|
fixed = ""
|
|
for line in open( x ):
|
|
s = line.partition( root + "(" )
|
|
if s[1] == "" or line.startswith( "#define " + root):
|
|
fixed += line
|
|
continue
|
|
fixed += s[0] + root + "( " + str( cur ) + " , " + s[2]
|
|
cur = cur + 1
|
|
didAnything = True
|
|
if didAnything:
|
|
out = open( x , 'w' )
|
|
out.write( fixed )
|
|
out.close()
|
|
|
|
|
|
def parseSourceFiles( callback ):
|
|
"""Walks MongoDB sourcefiles and invokes callback for each AssertLocation found."""
|
|
|
|
quick = [ "assert" , "Exception"]
|
|
|
|
patterns = [
|
|
re.compile( r"(?:u|m(?:sg)?)asser(?:t|ted)(?:NoTrace)?\s*\(\s*(\d+)", re.MULTILINE ) ,
|
|
re.compile( r"(?:User|Msg|MsgAssertion)Exception\s*\(\s*(\d+)", re.MULTILINE ),
|
|
re.compile( r"fassert(?:Failed)?(?:WithStatus)?(?:NoTrace)?(?:StatusOK)?\s*\(\s*(\d+)",
|
|
re.MULTILINE ),
|
|
]
|
|
|
|
bad = [ re.compile( r"^\s*assert *\(" ) ]
|
|
|
|
for sourceFile in utils.getAllSourceFiles():
|
|
if not sourceFile.find( "src/mongo/" ) >= 0:
|
|
# Skip generated sources
|
|
continue
|
|
|
|
with open(sourceFile) as f:
|
|
text = f.read()
|
|
|
|
if not any([zz in text for zz in quick]):
|
|
continue
|
|
|
|
# TODO: move check for bad assert type to the linter.
|
|
for b in bad:
|
|
if b.search(text):
|
|
msg = "Bare assert prohibited. Replace with [umwdf]assert"
|
|
print( "%s: %s" % (sourceFile, msg) )
|
|
raise Exception(msg)
|
|
|
|
splitlines = text.splitlines(True)
|
|
|
|
line_offsets = [0]
|
|
for line in splitlines:
|
|
line_offsets.append(line_offsets[-1] + len(line))
|
|
|
|
matchiters = [p.finditer(text) for p in patterns]
|
|
for matchiter in matchiters:
|
|
for match in matchiter:
|
|
code = match.group(1)
|
|
span = match.span()
|
|
|
|
thisLoc = AssertLocation(sourceFile,
|
|
getLineForPosition(line_offsets, span[1]),
|
|
text[span[0]:span[1]],
|
|
code)
|
|
|
|
callback( thisLoc )
|
|
|
|
# Converts an absolute position in a file into a line number.
|
|
def getLineForPosition(line_offsets, position):
|
|
return bisect.bisect(line_offsets, position)
|
|
|
|
def isTerminated( lines ):
|
|
"""Given .cpp/.h source lines as text, determine if assert is terminated."""
|
|
x = " ".join(lines)
|
|
return ';' in x \
|
|
or x.count('(') - x.count(')') <= 0
|
|
|
|
|
|
def getNextCode():
|
|
"""Finds next unused assertion code.
|
|
|
|
Called by: SConstruct and main()
|
|
Since SConstruct calls us, codes[] must be global OR WE REPARSE EVERYTHING
|
|
"""
|
|
if not len(codes) > 0:
|
|
readErrorCodes()
|
|
|
|
highest = reduce( lambda x, y: max(int(x), int(y)),
|
|
(loc.code for loc in codes) )
|
|
return highest + 1
|
|
|
|
|
|
def checkErrorCodes():
|
|
"""SConstruct expects a boolean response from this function.
|
|
"""
|
|
(codes, errors) = readErrorCodes()
|
|
return len( errors ) == 0
|
|
|
|
|
|
def readErrorCodes():
|
|
"""Defines callback, calls parseSourceFiles() with callback,
|
|
and saves matches to global codes list.
|
|
"""
|
|
seen = {}
|
|
errors = []
|
|
dups = defaultdict(list)
|
|
|
|
# define callback
|
|
def checkDups( assertLoc ):
|
|
codes.append( assertLoc )
|
|
code = assertLoc.code
|
|
|
|
if not code in seen:
|
|
seen[code] = assertLoc
|
|
else:
|
|
if not code in dups:
|
|
# on first duplicate, add original to dups, errors
|
|
dups[code].append( seen[code] )
|
|
errors.append( seen[code] )
|
|
|
|
dups[code].append( assertLoc )
|
|
errors.append( assertLoc )
|
|
|
|
parseSourceFiles( checkDups )
|
|
|
|
if seen.has_key("0"):
|
|
code = "0"
|
|
bad = seen[code]
|
|
errors.append( bad )
|
|
print( "ZERO_CODE:" )
|
|
print( " %s:%d:%s" % (bad.sourceFile, bad.lineNum, bad.lines) )
|
|
|
|
for code, locations in dups.items():
|
|
print( "DUPLICATE IDS: %s" % code )
|
|
for loc in locations:
|
|
print( " %s:%d:%s" % (loc.sourceFile, loc.lineNum, loc.lines) )
|
|
|
|
return (codes, errors)
|
|
|
|
|
|
def replaceBadCodes( errors, nextCode ):
|
|
"""Modifies C++ source files to replace invalid assertion codes.
|
|
For now, we only modify zero codes.
|
|
|
|
Args:
|
|
errors: list of AssertLocation
|
|
nextCode: int, next non-conflicting assertion code
|
|
"""
|
|
zero_errors = [e for e in errors if int(e.code) == 0]
|
|
skip_errors = [e for e in errors if int(e.code) != 0]
|
|
|
|
for loc in skip_errors:
|
|
print "SKIPPING NONZERO code=%s: %s:%s" % (loc.code, loc.sourceFile, loc.lineNum)
|
|
|
|
for assertLoc in zero_errors:
|
|
(sourceFile, lineNum, lines, code) = assertLoc
|
|
print "UPDATING_FILE: %s:%s" % (sourceFile, lineNum)
|
|
|
|
ln = lineNum - 1
|
|
|
|
with open(sourceFile, 'r+') as f:
|
|
fileLines = f.readlines()
|
|
line = fileLines[ln]
|
|
print "LINE_%d_BEFORE:%s" % (lineNum, line.rstrip())
|
|
line = re.sub(r'(\( *)(\d+)',
|
|
r'\g<1>' + str(nextCode),
|
|
line)
|
|
print "LINE_%d_AFTER :%s" % (lineNum, line.rstrip())
|
|
fileLines[ln] = line
|
|
f.seek(0)
|
|
f.writelines(fileLines)
|
|
nextCode += 1
|
|
|
|
|
|
def getBestMessage( lines , codeStr ):
|
|
"""Extracts message from one AssertionLocation.lines entry
|
|
|
|
Args:
|
|
lines: list of contiguous C++ source lines
|
|
codeStr: assertion code found in first line
|
|
"""
|
|
line = lines if isinstance(lines, str) else " ".join(lines)
|
|
|
|
err = line.partition( codeStr )[2]
|
|
if not err:
|
|
return ""
|
|
|
|
# Trim to outer quotes
|
|
m = re.search(r'"(.*)"', err)
|
|
if not m:
|
|
return ""
|
|
err = m.group(1)
|
|
|
|
# Trim inner quote pairs
|
|
err = re.sub(r'" +"', '', err)
|
|
err = re.sub(r'" *<< *"', '', err)
|
|
err = re.sub(r'" *<<[^<]+<< *"', '<X>', err)
|
|
err = re.sub(r'" *\+[^+]+\+ *"', '<X>', err)
|
|
|
|
# Trim escaped quotes
|
|
err = re.sub(r'\\"', '', err)
|
|
|
|
# Iff doublequote still present, trim that and any trailing text
|
|
err = re.sub(r'".*$', '', err)
|
|
|
|
return err.strip()
|
|
|
|
|
|
def writeMarkdownReport( codes, outfile ):
|
|
"""Write errors.md report to filesystem in Markdown format
|
|
|
|
Args:
|
|
codes: list of AssertLocation
|
|
outfile: string path to a file to overwrite
|
|
"""
|
|
|
|
baseurl = "http://github.com/mongodb/mongo/blob/master"
|
|
|
|
if os.path.exists(outfile):
|
|
i = open(outfile, "r" )
|
|
i.close()
|
|
|
|
out = open(outfile, 'wb')
|
|
out.write("MongoDB Error Codes\n")
|
|
out.write("===================\n\n")
|
|
out.write("This file is generated by errorcodes.py. Do not edit.\n\n")
|
|
|
|
prev = ""
|
|
seen = {}
|
|
|
|
# Sort by sourceFile, then code
|
|
codes.sort( key=lambda loc: loc.sourceFile+"-"+loc.code )
|
|
|
|
for assertLoc in codes:
|
|
if assertLoc.code in seen:
|
|
continue
|
|
seen[assertLoc.code] = True
|
|
|
|
(sourceFile, lineNum, lines, code) = assertLoc
|
|
|
|
if sourceFile.startswith("./"):
|
|
sourceFile = sourceFile[2:]
|
|
|
|
if sourceFile != prev:
|
|
out.write("\n\n%s\n----\n" % sourceFile)
|
|
prev = sourceFile
|
|
|
|
url = "%s/%s#L%s" % (baseurl, sourceFile, lineNum)
|
|
message = getBestMessage(lines, str(code))
|
|
out.write("* %s [code](%s) %s\n" % (code, url, message))
|
|
|
|
out.write( "\n" )
|
|
out.close()
|
|
|
|
|
|
def main():
|
|
parser = OptionParser(description=__doc__.strip())
|
|
parser.add_option("--fix", dest="replace",
|
|
action="store_true", default=False,
|
|
help="Fix zero codes in source files [default: %default]")
|
|
parser.add_option("-o", dest="outfile",
|
|
default="docs/errors.md",
|
|
help="Report file [default: %default]")
|
|
parser.add_option("--report", type="choice",
|
|
choices=["none", "markdown"], default="none",
|
|
help="What format report should be generated. " \
|
|
"Possible options: [none, markdown]")
|
|
(options, args) = parser.parse_args()
|
|
|
|
(codes, errors) = readErrorCodes()
|
|
ok = len(errors) == 0
|
|
next = getNextCode()
|
|
|
|
print("ok: %s" % ok)
|
|
print("next: %s" % next)
|
|
|
|
if ok:
|
|
reportStyle = options.report
|
|
if reportStyle == "markdown":
|
|
writeMarkdownReport(codes, options.outfile)
|
|
elif options.replace:
|
|
replaceBadCodes(errors, next)
|
|
else:
|
|
print ERROR_HELP
|
|
sys.exit(1)
|
|
|
|
|
|
ERROR_HELP = """
|
|
ERRORS DETECTED. To correct, run "buildscripts/errorcodes.py --fix" to replace zero codes.
|
|
Other errors require manual correction.
|
|
"""
|
|
|
|
if __name__ == "__main__":
|
|
main()
|