def findItemInCaches(myClass, nameOrLocation, checksumType, checksumValue, displayName=None, additionalSourceFolders=None, progressReporter=True, includeRemoteCaches=False):
# ---- validate input
# nameOrLocation
if not hasattr(nameOrLocation, 'capitalize') and not nameOrLocation is None:
raise ValueError('findItem requires a string or none as a nameOrLocation, but got: ' + nameOrLocation)
if nameOrLocation is not None and nameOrLocation.startswith('file://'):
nameOrLocation = nameOrLocation[len('file://'):]
if nameOrLocation is not None and urlparse.urlparse(nameOrLocation).scheme != '':
raise ValueError('findItemInCaches only works on file paths or names, got: ' + str(nameOrLocation))
# checksumType
if not hasattr(checksumType, 'capitalize'):
raise ValueError('findItem requires a string as a checksumType, but got: ' + checksumType)
# checksumValue
if not hasattr(checksumValue, 'capitalize'):
raise ValueError('findItem requires a string as a checksumValue, but got: ' + checksumValue)
# displayName
if not hasattr(displayName, 'capitalize') and not displayName is None:
raise ValueError('findItem requires a string or None as a displayName, but got: ' + displayName)
# additionalSourceFolders
foldersToSearch = myClass.getSourceFolders()
if additionalSourceFolders is None:
pass # nothing to do
elif hasattr(additionalSourceFolders, 'capitalize') and os.path.isdir(additionalSourceFolders):
foldersToSearch.append(pathHelpers.normalizePath(additionalSourceFolders, followSymlink=True))
elif hasattr(additionalSourceFolders, '__iter__'):
# validate that these are all folders
for thisFolder in additionalSourceFolders:
if not os.path.isdir(thisFolder):
raise ValueError('The folder given to findItemInCaches as an additionalSourceFolders either did not exist or was not a folder: ' + thisFolder)
foldersToSearch.append(pathHelpers.normalizePath(thisFolder, followSymlink=True))
else:
raise ValueError('Unable to understand the additionalSourceFolders given: ' + str(additionalSourceFolders))
# progressReporter
if progressReporter is True:
progressReporter = displayTools.statusHandler(statusMessage='Searching cache folders for ' + nameOrLocation)
elif progressReporter is False:
progressReporter = None
# ---- search for the items
# absolute paths
if nameOrLocation is not None and os.path.isabs(nameOrLocation):
if os.path.exists(nameOrLocation):
if checksumValue == checksum.checksum(nameOrLocation, checksumType=checksumType, progressReporter=progressReporter)['checksum']:
return nameOrLocation, False
else:
raise FileNotFoundException('The item at the path given does not match the checksum given: ' + nameOrLocation)
else:
raise FileNotFoundException('No file/folder existed at the absolute path: ' + nameOrLocation)
# relative path
elif nameOrLocation is not None and os.path.exists(nameOrLocation):
if checksumValue == checksum.checksum(nameOrLocation, checksumType=checksumType, progressReporter=progressReporter)['checksum']:
return pathHelpers.normalizePath(nameOrLocation, followSymlink=True), False
# cache folders
for thisCacheFolder in foldersToSearch:
parsedLocation = urlparse.urlparse('')
if nameOrLocation is not None:
parsedLocation = urlparse.urlparse(thisCacheFolder)
if parsedLocation.scheme in ['http', 'https'] and includeRemoteCaches is False:
continue
elif parsedLocation.scheme in ['http', 'https'] and includeRemoteCaches is True:
# -- try different paths on the server
urlsToTry = {}
(scheme, netloc, path, params, query, fragment) = urlparse.urlparse(thisCacheFolder)
# simple name
urlsToTry[urlparse.urlunparse((scheme, netloc, os.path.join(path, nameOrLocation), params, query, fragment))] = True
urlsToTry[urlparse.urlunparse((scheme, netloc, os.path.join(path, urllib.quote(nameOrLocation)), params, query, fragment))] = True
# name including checksum
nameWithChecksum = os.path.splitext(nameOrLocation)[0] + " " + checksumType + "-" + checksumValue + os.path.splitext(nameOrLocation)[1]
urlsToTry[urlparse.urlunparse((scheme, netloc, os.path.join(path, nameWithChecksum), params, query, fragment))] = True
urlsToTry[urlparse.urlunparse((scheme, netloc, os.path.join(path, urllib.quote(nameWithChecksum)), params, query, fragment))] = True
for thisURL in urlsToTry.keys():
try:
readFile = urllib2.urlopen(thisURL)
except IOError, error:
continue
remoteGuessedName = os.path.basename(urllib.unquote(urlparse.urlparse(thisURL).path))
targetFileName = remoteGuessedName
if checksumType + "-" + checksumValue not in targetFileName:
targetFileName = os.path.splitext(remoteGuessedName)[0] + " " + checksumType + "-" + checksumValue + os.path.splitext(remoteGuessedName)[1]
# try to get the expected file length
httpHeader = readFile.info()
expectedLength = None
if httpHeader.has_key("content-length"):
try:
expectedLength = int(httpHeader.getheader("content-length"))
except:
pass
if progressReporter is not None:
if expectedLength is None:
progressReporter.update(statusMessage=' downloading from local web cache ')
else:
progressReporter.update(statusMessage=' downloading %s from local web cache ' % displayTools.bytesToRedableSize(expectedLength))
# download file
hashGenerator = hashlib.new(checksumType)
startTime = time.time()
targetFilePath = os.path.join(myClass.getCacheFolder(), targetFileName)
processedBytes, processSeconds = checksum.checksumFileObject(hashGenerator, readFile, remoteGuessedName, expectedLength, copyToPath=targetFilePath, progressReporter=progressReporter)
if hashGenerator.hexdigest() != checksumValue:
os.unlink(targetFilePath)
else:
if progressReporter is not None:
progressReporter.update(statusMessage=' downloaded from local web cache and verified %s in %s (%s/sec)' % (displayTools.bytesToRedableSize(processedBytes), displayTools.secondsToReadableTime(time.time() - startTime), displayTools.bytesToRedableSize(processedBytes/processSeconds)))
progressReporter.finishLine()
myClass.addItemToVerifiedFiles('%s-%s' % (checksumType, checksumValue), targetFilePath)
readFile.close()
return targetFilePath, True
readFile.close()
elif parsedLocation.scheme == '':
# relative paths from the source folders
if nameOrLocation is not None and nameOrLocation.count(os.sep) > 0 and os.path.exists(os.path.join(thisCacheFolder, nameOrLocation)):
if checksumValue == checksum.checksum(os.path.join(thisCacheFolder, nameOrLocation), checksumType=checksumType, progressReporter=progressReporter)['checksum']:
return pathHelpers.normalizePath(os.path.join(thisCacheFolder, nameOrLocation), followSymlink=True), False
# walk up through the whole set
for currentFolder, dirs, files in os.walk(thisCacheFolder, topdown=True):
# check each file to see if it is what we are looking for
for thisItemPath, thisItemName in [[os.path.join(currentFolder, internalName), internalName] for internalName in (files + dirs)]:
# checksum in name
fileNameSearchResults = myClass.fileNameChecksumRegex.search(thisItemName)
nameChecksumType = None
nameChecksumValue = None
if fileNameSearchResults is not None:
nameChecksumType = fileNameSearchResults.group('checksumType')
nameChecksumValue = fileNameSearchResults.group('checksumValue')
if nameChecksumType is not None and nameChecksumType.lower() == checksumType.lower() and nameChecksumValue is not None and nameChecksumValue == checksumValue:
if checksumValue == checksum.checksum(thisItemPath, checksumType=checksumType, progressReporter=progressReporter)['checksum']:
return thisItemPath, False
# file name
if nameOrLocation is not None:
if nameOrLocation in [thisItemName, os.path.splitext(thisItemName)[0]] or os.path.splitext(nameOrLocation)[0] in [thisItemName, os.path.splitext(thisItemName)[0]]:
if checksumValue == checksum.checksum(thisItemPath, checksumType=checksumType, progressReporter=progressReporter)['checksum']:
return thisItemPath, False
# don't decend into folders that look like bundles or sparce dmg's
if os.path.isdir(thisItemPath):
if os.listdir(thisItemPath) == ["Contents"] or os.listdir(thisItemPath) == ["Info.bckup", "Info.plist", "bands", "token"]:
dirs.remove(thisItemName)
def findItem(myClass, nameOrLocation, checksumType, checksumValue, displayName=None, additionalSourceFolders=None, progressReporter=True):
'''Find an item locally, or download it'''
# ---- validate input
# nameOrLocation
if not hasattr(nameOrLocation, 'capitalize') and not nameOrLocation is None:
raise ValueError('findItem requires a string as a nameOrLocation, but got: ' + nameOrLocation)
if nameOrLocation is not None and nameOrLocation.startswith('file://'):
nameOrLocation = nameOrLocation[len('file://'):]
# checksumType
if not hasattr(checksumType, 'capitalize'):
raise ValueError('findItem requires a string as a checksumType, but got: ' + checksumType)
# checksumValue
if not hasattr(checksumValue, 'capitalize'):
raise ValueError('findItem requires a string as a checksumValue, but got: ' + checksumValue)
# displayName
if not hasattr(displayName, 'capitalize') and not displayName is None:
raise ValueError('findItem requires a string or None as a displayName, but got: ' + displayName)
# additionalSourceFolders
if additionalSourceFolders is None:
pass # nothing to do
elif hasattr(additionalSourceFolders, 'capitalize') and os.path.isdir(additionalSourceFolders):
pass # nothing to do
elif hasattr(additionalSourceFolders, '__iter__'):
# validate that these are all folders
for thisFolder in additionalSourceFolders:
if not os.path.isdir(thisFolder):
raise ValueError('The folder given to findItem as an additionalSourceFolders either did not exist or was not a folder: ' + thisFolder)
else:
raise ValueError('Unable to understand the additionalSourceFolders given: ' + str(additionalSourceFolders))
# progressReporter
if progressReporter is True:
progressReporter = displayTools.statusHandler(taskMessage='Searching for ' + nameOrLocation)
elif progressReporter is False:
progressReporter = None
# ---- start the timer for reporting
startTime = time.time()
# ---- look localy
# -- absolute path, note: if an absolute path is not found we will error out
if os.path.isabs(nameOrLocation):
if progressReporter is not None:
progressReporter.update(statusMessage=' looking at an absolute location')
resultPath, reportCompleted = myClass.findItemInCaches(None, checksumType, checksumValue, displayName, additionalSourceFolders, progressReporter)
if resultPath is not None:
# note: if there is nothing at this path, we will get an error before this
if progressReporter is not None and reportCompleted is False:
progressReporter.update(statusMessage=' found at an absolute location and verified in %s' % (displayTools.secondsToReadableTime(time.time() - startTime)))
progressReporter.finishLine()
return resultPath
# -- try relative path, include remote caches
parsedNameOrLocation = urlparse.urlparse(nameOrLocation)
if parsedNameOrLocation.scheme == '' and nameOrLocation.count(os.sep) > 0:
if progressReporter is not None:
progressReporter.update(statusMessage=' looking at relative locations')
resultPath, reportCompleted = myClass.findItemInCaches(nameOrLocation, checksumType, checksumValue, displayName, additionalSourceFolders, progressReporter, includeRemoteCaches=True)
if resultPath is not None:
# note: if there is nothing at this path, we will get an error before this
if progressReporter is not None and reportCompleted is False:
progressReporter.update(statusMessage=' found at a relative location and verified in %s' % (displayTools.secondsToReadableTime(time.time() - startTime)))
progressReporter.finishLine()
return resultPath
# -- based on checksum
# first see if we already found this item
# check the already verified items for this checksum
checksumString = '%s-%s' % (checksumType, checksumValue)
if checksumString in myClass.verifiedFiles:
if progressReporter is not None:
progressReporter.update(statusMessage=' found previously')
progressReporter.finishLine()
return myClass.verifiedFiles[checksumString]
# look through the caches
if progressReporter is not None:
progressReporter.update(statusMessage=' looking based on checksum')
resultPath, reportCompleted = myClass.findItemInCaches(None, checksumType, checksumValue, displayName, additionalSourceFolders, progressReporter)
if resultPath is not None:
myClass.addItemToVerifiedFiles(checksumString, resultPath)
if progressReporter is not None and reportCompleted is False:
progressReporter.update(statusMessage=' found based on checksum and verified in %s' % (displayTools.secondsToReadableTime(time.time() - startTime)))
progressReporter.finishLine()
return resultPath
# -- based on name guessed from nameOrLocation, include remote caches
locallyGuessedName = None
if progressReporter is not None:
progressReporter.update(statusMessage=' looking based on guessed name and verified in %s' % (displayTools.secondsToReadableTime(time.time() - startTime)))
if parsedNameOrLocation.scheme in ['http', 'https']:
locallyGuessedName = os.path.basename(parsedNameOrLocation.path)
else:
locallyGuessedName = os.path.basename(nameOrLocation)
resultPath, reportCompleted = myClass.findItemInCaches(locallyGuessedName, checksumType, checksumValue, displayName, additionalSourceFolders, progressReporter, includeRemoteCaches=True)
if resultPath is not None:
myClass.addItemToVerifiedFiles(checksumString, resultPath)
if progressReporter is not None and reportCompleted is False:
progressReporter.update(statusMessage=' found based on guessed name and verified in %s' % (displayTools.secondsToReadableTime(time.time() - startTime)))
progressReporter.finishLine()
return resultPath
# -- based on display name
if displayName is not None:
if progressReporter is not None:
progressReporter.update(statusMessage=' looking based on display name')
resultPath, reportCompleted = myClass.findItemInCaches(displayName, checksumType, checksumValue, displayName, additionalSourceFolders, progressReporter)
if resultPath is not None:
myClass.addItemToVerifiedFiles(checksumString, resultPath)
if progressReporter is not None and reportCompleted is False:
progressReporter.update(statusMessage=' found based on display name and verified in %s' % (displayTools.secondsToReadableTime(time.time() - startTime)))
progressReporter.finishLine()
return resultPath
# ---- look remotely over http/https
if parsedNameOrLocation.scheme in ['http', 'https']:
remoteGuessedName = locallyGuessedName
# -- open a connection and get information to guess the name
# open the connection
readFile = None
try:
readFile = urllib2.urlopen(nameOrLocation)
except IOError, error:
if hasattr(error, 'reason'):
raise Exception('Unable to connect to remote url: %s got error: %s' % (nameOrLocation, error.reason))
elif hasattr(error, 'code'):
raise Exception('Got status code: %s while trying to connect to remote url: %s' % (str(error.code), nameOrLocation))
# try reading out the content-disposition header
httpHeader = readFile.info()
if httpHeader.has_key("content-disposition"):
remoteGuessedName = httpHeader.getheader("content-disposition").strip()
if remoteGuessedName is not locallyGuessedName:
if progressReporter is not None:
progressReporter.update(statusMessage=' looking based on name from content-disposition')
resultPath, reportCompleted = myClass.findItemInCaches(remoteGuessedName, checksumType, checksumValue, displayName, additionalSourceFolders, progressReporter, includeRemoteCaches=True)
if resultPath is not None:
if progressReporter is not None and reportCompleted is False:
progressReporter.update(statusMessage=' found based on name from content-disposition and verified in %s' % (displayTools.secondsToReadableTime(time.time() - startTime)))
progressReporter.finishLine()
readFile.close()
return resultPath
# try the name in the final URL
secondRemoteGuessedName = os.path.basename( urllib.unquote(urlparse.urlparse(readFile.geturl()).path) )
if secondRemoteGuessedName not in [locallyGuessedName, remoteGuessedName]:
if progressReporter is not None:
progressReporter.update(statusMessage=' looking based on name in final URL')
resultPath, reportCompleted = myClass.findItemInCaches(secondRemoteGuessedName, checksumType, checksumValue, displayName, additionalSourceFolders, progressReporter, includeRemoteCaches=True)
if resultPath is not None:
if progressReporter is not None and reportCompleted is False:
progressReporter.update(statusMessage=' found based on name in final URL and verified in %s' % (displayTools.secondsToReadableTime(time.time() - startTime)))
progressReporter.finishLine()
readFile.close()
return resultPath
# -- download file
# try to get the expected file length
expectedLength = None
if httpHeader.has_key("content-length"):
try:
expectedLength = int(httpHeader.getheader("content-length"))
except:
pass
if progressReporter is not None:
if expectedLength is None:
progressReporter.update(statusMessage=' downloading ')
else:
progressReporter.update(statusMessage=' downloading %s ' % displayTools.bytesToRedableSize(expectedLength))
hashGenerator = hashlib.new(checksumType)
downloadTargetPath = os.path.join(myClass.getCacheFolder(), os.path.splitext(secondRemoteGuessedName)[0] + " " + checksumString + os.path.splitext(secondRemoteGuessedName)[1])
processedBytes, processSeconds = checksum.checksumFileObject(hashGenerator, readFile, secondRemoteGuessedName, expectedLength, copyToPath=downloadTargetPath, progressReporter=progressReporter)
if hashGenerator.hexdigest() != checksumValue:
# os.unlink(downloadTargetPath) # Why would we throw the file away just because of a hash mismatch?
readFile.close()
raise FileNotFoundException("Downloaded file did not match checksum: %s (Find this: %s and replace it with this: %s)" % (nameOrLocation, checksumValue, hashGenerator.hexdigest()))
if progressReporter is not None:
progressReporter.update(statusMessage=' downloaded and verified %s in %s (%s/sec)' % (displayTools.bytesToRedableSize(processedBytes), displayTools.secondsToReadableTime(time.time() - startTime), displayTools.bytesToRedableSize(processedBytes/processSeconds)))
progressReporter.finishLine()
myClass.addItemToVerifiedFiles(checksumString, downloadTargetPath)
readFile.close()
return downloadTargetPath
