class JoernSteps:
def __init__(self):
self._initJoernSteps()
self.initCommandSent = False
def setGraphDbURL(self, url):
""" Sets the graph database URL. By default,
http://localhost:7474/db/data/ is used."""
self.graphDbURL = url
def addStepsDir(self, stepsDir):
"""Add an additional directory containing steps to be injected
into the server"""
self.stepsDirs.append(stepsDir)
def connectToDatabase(self):
""" Connects to the database server."""
self.graphDb = neo4j.GraphDatabaseService(self.graphDbURL)
self.gremlin = Gremlin(self.graphDb)
def runGremlinQuery(self, query):
""" Runs the specified gremlin query on the database. It is
assumed that a connection to the database has been
established. To allow the user-defined steps located in the
joernsteps directory to be used in the query, these step
definitions are prepended to the query."""
if not self.initCommandSent:
self.initCommand = self._createInitCommand()
self.initCommandSent = True
finalQuery = self.initCommand
else:
finalQuery = ""
finalQuery += query
return self.gremlin.execute_script(finalQuery)
def runCypherQuery(self, cmd):
""" Runs the specified cypher query on the graph database."""
return cypher.execute(self.graphDb, cmd)
def getGraphDbURL(self):
return self.graphDbURL
"""
Create chunks from a list of ids.
This method is useful when you want to execute many independent
traversals on a large set of start nodes. In that case, you
can retrieve the set of start node ids first, then use 'chunks'
to obtain disjoint subsets that can be passed to idListToNodes.
"""
def chunks(self, idList, chunkSize):
for i in xrange(0, len(idList), chunkSize):
yield idList[i:i+chunkSize]
def _initJoernSteps(self):
self.graphDbURL = DEFAULT_GRAPHDB_URL
self.stepsDirs = [DEFAULT_STEP_DIR]
def _createInitCommand(self):
initCommand = ""
for stepsDir in self.stepsDirs:
for (root, dirs, files) in os.walk(stepsDir, followlinks=True):
files.sort()
for f in files:
filename = os.path.join(root, f)
if not filename.endswith('.groovy'): continue
initCommand += file(filename).read() + "\n"
return initCommand
def connectToDatabase(self):
""" Connects to the database server."""
self.graphDb = neo4j.GraphDatabaseService(self.graphDbURL)
self.gremlin = Gremlin(self.graphDb)