import os import sys import re import time import json import logging import requests class AppBase: """ The base class for Python-based apps in Shuffle, handles logging and callbacks configurations""" __version__ = None app_name = None def __init__(self, redis=None, logger=None, console_logger=None):#, docker_client=None): self.logger = logger if logger is not None else logging.getLogger("AppBaseLogger") self.redis=redis self.console_logger = logger if logger is not None else logging.getLogger("AppBaseLogger") # apikey is for the user / org # authorization is for the specific workflow self.url = os.getenv("CALLBACK_URL", "https://shuffler.io") self.action = os.getenv("ACTION", "") self.apikey = os.getenv("FUNCTION_APIKEY", "") self.authorization = os.getenv("AUTHORIZATION", "") self.current_execution_id = os.getenv("EXECUTIONID", "") if len(self.action) == 0: print("ACTION env not defined") sys.exit(0) if len(self.apikey) == 0: print("FUNCTION_APIKEY env not defined") sys.exit(0) if len(self.authorization) == 0: print("AUTHORIZATION env not defined") sys.exit(0) if len(self.current_execution_id) == 0: print("EXECUTIONID env not defined") sys.exit(0) if isinstance(self.action, str): self.action = json.loads(self.action) async def execute_action(self, action): # FIXME - add request for the function STARTING here. Use "results stream" or something # PAUSED, AWAITING_DATA, PENDING, COMPLETED, ABORTED, EXECUTING, SUCCESS, FAILURE # !!! Let this line stay - its used for some horrible codegeneration / stitching !!! # #STARTCOPY stream_path = "/api/v1/streams" action_result = { "action": action, "authorization": self.authorization, "execution_id": self.current_execution_id, "result": "", "started_at": int(time.time()), "status": "EXECUTING" } self.logger.info("ACTION RESULT: %s", action_result) headers = { "Content-Type": "application/json", "Authorization": "Bearer %s" % self.apikey } # Add async logger # self.console_logger.handlers[0].stream.set_execution_id() #self.logger.info("Before initial stream result") try: ret = requests.post("%s%s" % (self.url, stream_path), headers=headers, json=action_result) self.logger.info("Workflow: %d" % ret.status_code) if ret.status_code != 200: self.logger.info(ret.text) except requests.exceptions.ConnectionError as e: print("Connectionerror: %s" % e) return # Verify whether there are any parameters with ACTION_RESULT required # If found, we get the full results list from backend fullexecution = {} try: tmpdata = { "authorization": self.authorization, "execution_id": self.current_execution_id } self.logger.info("Before FULLEXEC stream result") ret = requests.post( "%s/api/v1/streams/results" % (self.url), headers=headers, json=tmpdata ) if ret.status_code == 200: fullexecution = ret.json() else: self.logger.info("Error: Data: ", ret.json()) self.logger.info("Error with status code for results. Crashing because ACTION_RESULTS or WORKFLOW_VARIABLE can't be handled. Status: %d" % ret.status_code) return except requests.exceptions.ConnectionError as e: self.logger.info("Connectionerror: %s" % e) return self.logger.info("AFTER FULLEXEC stream result") # Takes a workflow execution as argument # Returns a string if the result is single, or a list if it's a list def get_json_value(execution_data, input_data): parsersplit = input_data.split(".") actionname = parsersplit[0][1:].replace(" ", "_", -1) print(f"Actionname: {actionname}") # 1. Find the action baseresult = "" actionname_lower = actionname.lower() try: if actionname_lower == "exec": baseresult = execution_data["execution_argument"] else: for result in execution_data["results"]: resultlabel = result["action"]["label"].replace(" ", "_", -1).lower() if resultlabel.lower() == actionname_lower: baseresult = result["result"] break print("BEFORE VARIABLES!") if len(baseresult) == 0: print("Variables: %s" % execution_data["workflow"]["workflow_variables"]) for variable in execution_data["workflow"]["workflow_variables"]: variablename = variable["name"].replace(" ", "_", -1).lower() if variablename.lower() == actionname_lower: baseresult = variable["value"] break except KeyError as error: print(f"KeyError in JSON: {error}") print(f"After first trycatch") # 2. Find the JSON data if len(baseresult) == 0: return "" if len(parsersplit) == 1: return baseresult baseresult = baseresult.replace("\'", "\"") basejson = {} try: basejson = json.loads(baseresult) except json.decoder.JSONDecodeError as e: return baseresult try: cnt = 0 for value in parsersplit[1:]: cnt += 1 if value == "#": # FIXME - not recursive - should go deeper if there are more # print("HANDLE RECURSIVE LOOP ") returnlist = [] for innervalue in basejson: #print("Value: %s" % value[parsersplit[cnt+1]]) returnlist.append(innervalue[parsersplit[cnt+1]]) # Example format: ${[]}$ return "${%s%s}$" % (parsersplit[cnt+1], json.dumps(returnlist)) else: if isinstance(basejson[value], str): print(f"LOADING STRING '%s' AS JSON" % basejson[value]) try: basejson = json.loads(basejson[value]) except json.decoder.JSONDecodeError as e: print("RETURNING BECAUSE '%s' IS A NORMAL STRING" % basejson[value]) return basejson[value] else: basejson = basejson[value] except KeyError as e: return "KeyError: %s" % e except IndexError as e: return "IndexError: %s" % e return basejson def parse_params(action, fullexecution, parameter): jsonparsevalue = "$." match = ".*([$]{1}([a-zA-Z0-9()# _-]+\.?){1,})" # Regex to find all the things if parameter["variant"] == "STATIC_VALUE": data = parameter["value"] actualitem = re.findall(match, data, re.MULTILINE) #self.logger.debug(f"\n\nHandle static data with JSON: {data}\n\n") #self.logger.info("STATIC PARSED: %s" % actualitem) if len(actualitem) > 0: for replace in actualitem: try: to_be_replaced = replace[0] except IndexError: continue value = get_json_value(fullexecution, to_be_replaced) if isinstance(value, str): parameter["value"] = parameter["value"].replace(to_be_replaced, value) elif isinstance(value, dict): parameter["value"] = parameter["value"].replace(to_be_replaced, json.dumps(value)) else: print("Unknown type %s" % type(value)) try: parameter["value"] = parameter["value"].replace(to_be_replaced, json.dumps(value)) except json.decoder.JSONDecodeError as e: parameter["value"] = parameter["value"].replace(to_be_replaced, value) if parameter["variant"] == "WORKFLOW_VARIABLE": for item in fullexecution["workflow"]["workflow_variables"]: if parameter["action_field"] == item["name"]: parameter["value"] = item["value"] break elif parameter["variant"] == "ACTION_RESULT": # FIXME - calculate value based on action_field and $if prominent # FIND THE RIGHT LABEL # GET THE LABEL'S RESULT tmpvalue = "" self.logger.info("ACTION FIELD: %s" % parameter["action_field"]) #"$%s%s" % fullname = "$" if parameter["action_field"] == "Execution Argument": tmpvalue = fullexecution["execution_argument"] fullname += "exec" else: fullname += parameter["action_field"] if parameter["value"].startswith(jsonparsevalue): fullname += parameter["value"][2:] else: fullname = "$%s" % parameter["action_field"] self.logger.info("Fullname: %s" % fullname) actualitem = re.findall(match, fullname, re.MULTILINE) self.logger.info("ACTION PARSED: %s" % actualitem) if len(actualitem) > 0: for replace in actualitem: try: to_be_replaced = replace[0] except IndexError: print("Nothing to replace?: " % e) continue # This will never be a loop aka multi argument parameter["value"] = to_be_replaced value = get_json_value(fullexecution, to_be_replaced) if isinstance(value, str): parameter["value"] = parameter["value"].replace(to_be_replaced, value) elif isinstance(value, dict): parameter["value"] = parameter["value"].replace(to_be_replaced, json.dumps(value)) else: print("Unknown type %s" % type(value)) try: parameter["value"] = parameter["value"].replace(to_be_replaced, json.dumps(value)) except json.decoder.JSONDecodeError as e: parameter["value"] = parameter["value"].replace(to_be_replaced, value) return "", parameter["value"] def run_validation(sourcevalue, check, destinationvalue): self.logger.info("Checking %s %s %s" % (sourcevalue, check, destinationvalue)) if check == "=" or check.lower() == "equals": if sourcevalue.lower() == destinationvalue.lower(): return True elif check == "!=" or check.lower() == "does not equal": if sourcevalue.lower() != destinationvalue.lower(): return True elif check.lower() == "startswith": if sourcevalue.lower().startswith(destinationvalue.lower()): return True elif check.lower() == "endswith": if sourcevalue.lower().endswith(destinationvalue.lower()): return True elif check.lower() == "contains": if destinationvalue.lower() in sourcevalue.lower(): return True else: self.logger.info("Condition: can't handle %s yet. Setting to true" % check) return False def check_branch_conditions(action, fullexecution): # relevantbranches = workflow.branches where destination = action try: if fullexecution["workflow"]["branches"] == None or len(fullexecution["workflow"]["branches"]) == 0: return True, "" except KeyError: return True, "" relevantbranches = [] for branch in fullexecution["workflow"]["branches"]: if branch["destination_id"] != action["id"]: continue self.logger.info("Relevant branch: %s" % branch) # Remove anything without a condition try: if (branch["conditions"]) == 0 or branch["conditions"] == None: continue except KeyError: continue self.logger.info("Relevant conditions: %s" % branch["conditions"]) successful_conditions = [] failed_conditions = [] for condition in branch["conditions"]: self.logger.info("Getting condition value of %s" % condition) # Parse all values first here sourcevalue = condition["source"]["value"] if condition["source"]["variant"] == "" or condition["source"]["variant"]== "STATIC_VALUE": condition["source"]["variant"]= "STATIC_VALUE" else: check, sourcevalue = parse_params(action, fullexecution, condition["source"]) if check: return False, "Failed condition: %s %s %s because %s" % (sourcevalue, condition["condition"]["value"], destinationvalue, check) print(sourcevalue) destinationvalue = condition["destination"]["value"] if condition["destination"]["variant"]== "" or condition["destination"]["variant"]== "STATIC_VALUE": condition["destination"]["variant"] = "STATIC_VALUE" else: check, destinationvalue = parse_params(action, fullexecution, condition["destination"]) if check: return False, "Failed condition: %s %s %s because %s" % (sourcevalue, condition["condition"]["value"], destinationvalue, check) available_checks = [ "=", "equals", "!=", "does not equal", ">", "larger than", "<", "less than", ">=", "<=", "startswith", "endswith", "contains", "re", "matches regex", ] # FIXME - what should I do here? if not condition["condition"]["value"] in available_checks: self.logger.info("Skipping %s %s %s because %s is invalid." % (sourcevalue, condition["condition"]["value"], destinationvalue, condition["condition"]["value"])) continue #print(destinationvalue) if not run_validation(sourcevalue, condition["condition"]["value"], destinationvalue): self.logger.info("Failed condition check for %s %s %s." % (sourcevalue, condition["condition"]["value"], destinationvalue)) return False, "Failed condition: %s %s %s" % (sourcevalue, condition["condition"]["value"], destinationvalue) # Make a general parser here, at least to get param["name"] = param["value"] in maparameter[string]string #for condition in branch.conditons: return True, "" # Checks whether conditions are met, otherwise set branchcheck, tmpresult = check_branch_conditions(action, fullexecution) if not branchcheck: self.logger.info("Failed one or more branch conditions.") action_result["result"] = tmpresult action_result["status"] = "SKIPPED" try: ret = requests.post("%s%s" % (self.url, stream_path), headers=headers, json=action_result) self.logger.info("Result: %d" % ret.status_code) if ret.status_code != 200: self.logger.info(ret.text) except requests.exceptions.ConnectionError as e: self.logger.exception(e) return # Replace name cus there might be issues # Not doing lower() as there might be user-made functions actionname = action["name"] if " " in actionname: actionname.replace(" ", "_", -1) #if action.generated: # actionname = actionname.lower() # Runs the actual functions try: func = getattr(self, actionname, None) if func == None: self.logger.debug("Failed executing %s because func is None." % actionname) action_result["status"] = "FAILURE" action_result["result"] = "Function %s doesn't exist." % actionname elif callable(func): try: if len(action["parameters"]) < 1: result = await func() else: # Potentially parse JSON here # FIXME - add potential authentication as first parameter(s) here # params[parameter["name"]] = parameter["value"] #print(fullexecution["authentication"] # What variables are necessary here tho hmm params = {} try: for item in action["authentication"]: print("AUTH: ", key, value) params[item["key"]] = item["value"] except KeyError: print("No authentication specified!") pass #action["authentication"] # calltimes is used to handle forloops in the app itself. # 2 kinds of loop - one in gui with one app each, and one like this, # which is super fast, but has a bad overview (potentially good tho) calltimes = 1 result = "" all_executions = [] # Multi_parameter has the data for each. variable minlength = 0 multi_parameters = json.loads(json.dumps(params)) multiexecution = False for parameter in action["parameters"]: check, value = parse_params(action, fullexecution, parameter) if check: raise Exception(check) # Custom format for ${name[0,1,2,...]}$ submatch = "([${]{2}([0-9a-zA-Z_-]+)(\[.*\])[}$]{2})" actualitem = re.findall(submatch, value, re.MULTILINE) if len(actualitem) > 0: multiexecution = True # This is here to handle for loops within variables.. kindof # 1. Find the length of the longest array # 2. Build an array with the base values based on parameter["value"] # 3. Get the n'th value of the generated list from values # 4. Execute all n answers replacements = {} for replace in actualitem: try: to_be_replaced = replace[0] actualitem = replace[2] except IndexError: continue itemlist = json.loads(actualitem) if len(itemlist) > minlength: minlength = len(itemlist) replacements[to_be_replaced] = actualitem # This is a result array for JUST this value.. # What if there are more? resultarray = [] for i in range(0, minlength): tmpitem = json.loads(json.dumps(parameter["value"])) for key, value in replacements.items(): replacement = json.loads(value)[i] tmpitem = tmpitem.replace(key, replacement, -1) resultarray.append(tmpitem) # With this parameter ready, add it to... a greater list of parameters. Rofl multi_parameters[parameter["name"]] = resultarray else: params[parameter["name"]] = value multi_parameters[parameter["name"]] = value # FIXME - this is horrible, but works for now #for i in range(calltimes): if not multiexecution: print("Params: %s" % params) print("RUNNING NORMAL EXECUTION") result += await func(**params) else: print("MULTI EXECUTION: ", multi_parameters) # 1. Use number of executions based on longest array # 2. Find the right value from the parsed multi_params results = [] json_object = False for i in range(0, minlength): # To be able to use the results as a list: baseparams = json.loads(json.dumps(multi_parameters)) try: for key, value in baseparams.items(): if isinstance(value, list): baseparams[key] = value[i] except IndexError as e: print("IndexError: %s" % e) baseparams[key] = "IndexError: %s" % e except KeyError as e: print("KeyError: %s" % e) baseparams[key] = "KeyError: %s" % e #print("Running with params %s" % baseparams) ret = await func(**baseparams) print("Inner ret: %s" % ret) try: results.append(json.loads(ret)) json_object = True except json.decoder.JSONDecodeError as e: results.append(ret) # Dump the result as a string of a list print("RESULTS: %s" % results) if isinstance(results, list): print("JSON OBJECT? ", json_object) if json_object: result = json.dumps(results) else: result = "[\""+"\", \"".join(results)+"\"]" else: print("Normal result?") result = results print("RESULT: %s" % result) action_result["status"] = "SUCCESS" action_result["result"] = str(result) if action_result["result"] == "": action_result["result"] = result self.logger.debug(f"Executed {action['label']}-{action['id']} with result: {result}") self.logger.debug(f"Data: %s" % action_result) except TypeError as e: action_result["status"] = "FAILURE" action_result["result"] = "TypeError: %s" % str(e) else: print("Not callable?") self.logger.error(f"App {self.__class__.__name__}.{action['name']} is not callable") action_result["status"] = "FAILURE" action_result["result"] = "Function %s is not callable." % actionname except Exception as e: print(f"Failed to execute: {e}") self.logger.exception(f"Failed to execute {e}-{action['id']}") action_result["status"] = "FAILURE" action_result["result"] = "Exception: %s" % e action_result["completed_at"] = int(time.time()) # I wonder if this actually works self.logger.info("Before last stream result") try: ret = requests.post("%s%s" % (self.url, stream_path), headers=headers, json=action_result) self.logger.info("Result: %d" % ret.status_code) if ret.status_code != 200: self.logger.info(ret.text) except requests.exceptions.ConnectionError as e: self.logger.exception(e) return except TypeError as e: self.logger.exception(e) action_result["status"] = "FAILURE" action_result["result"] = "POST error: %s" % e self.logger.info("Before typeerror stream result") ret = requests.post("%s%s" % (self.url, stream_path), headers=headers, json=action_result) self.logger.info("Result: %d" % ret.status_code) if ret.status_code != 200: self.logger.info(ret.text) return #STOPCOPY # !!! Let the above line stay - its used for some horrible codegeneration / stitching !!! # @classmethod async def run(cls): """ Connect to Redis and HTTP session, await actions """ logging.basicConfig(format="{asctime} - {name} - {levelname}:{message}", style='{') logger = logging.getLogger(f"{cls.__name__}") logger.setLevel(logging.DEBUG) print("Started execution!!") app = cls(redis=None, logger=logger, console_logger=logger) # Authorization for the app/function to control the workflow # Function will crash if its wrong, which it probably should. await app.execute_action(app.action)