| #!/usr/bin/python |
| |
| """A script that provides convertion between models.job and a protocol |
| buffer object. |
| |
| This script contains only one class that takes an job instance and |
| convert it into a protocol buffer object. The class will also be |
| responsible for serializing the job instance via protocol buffers. |
| |
| """ |
| |
| # import python libraries |
| import os |
| import datetime |
| import time |
| import random |
| import re |
| |
| # import autotest libraries |
| from autotest_lib.tko import models |
| from autotest_lib.tko import tko_pb2 |
| from autotest_lib.tko import utils |
| |
| __author__ = 'darrenkuo@google.com (Darren Kuo)' |
| |
| mktime = time.mktime |
| datetime = datetime.datetime |
| |
| class JobSerializer(object): |
| """A class that takes a job object of the tko module and package |
| it with a protocol buffer. |
| |
| This class will take a model.job object as input and create a |
| protocol buffer to include all the content of the job object. This |
| protocol buffer object will be serialized into a binary file. |
| """ |
| |
| def __init__(self): |
| |
| self.job_type_dict = {'dir':str, 'tests':list, 'user':str, |
| 'label':str, 'machine':str, |
| 'queued_time':datetime, |
| 'started_time':datetime, |
| 'finished_time':datetime, |
| 'machine_owner':str, |
| 'machine_group':str, 'aborted_by':str, |
| 'aborted_on':datetime, |
| 'keyval_dict':dict} |
| |
| self.test_type_dict = {'subdir':str, 'testname':str, |
| 'status':str, 'reason':str, |
| 'kernel':models.kernel, 'machine':str, |
| 'started_time':datetime, |
| 'finished_time':datetime, |
| 'iterations':list, 'attributes':dict, |
| 'labels':list} |
| |
| self.kernel_type_dict = {'base':str, 'kernel_hash':str} |
| |
| self.iteration_type_dict = {'index':int, 'attr_keyval':dict, |
| 'perf_keyval':dict} |
| |
| |
| def deserialize_from_binary(self, infile): |
| """Takes in a binary file name and returns a tko job object. |
| |
| The method first deserialize the binary into a protocol buffer |
| job object and then converts the job object into a tko job |
| object. |
| |
| @param |
| infile: the name of the binary file that will be deserialized. |
| |
| @return a tko job that is represented by the binary file will |
| be returned. |
| """ |
| |
| job_pb = tko_pb2.Job() |
| |
| binary = open(infile, 'r') |
| try: |
| job_pb.ParseFromString(binary.read()) |
| finally: |
| binary.close() |
| |
| return self.get_tko_job(job_pb) |
| |
| |
| def serialize_to_binary(self, the_job, tag, binaryfilename): |
| """Serializes the tko job object into a binary by using a |
| protocol buffer. |
| |
| The method takes a tko job object and constructs a protocol |
| buffer job object. Then invokes the native serializing |
| function on the object to get a binary string. The string is |
| then written to outfile. |
| |
| Precondition: Assumes that all the information about the job |
| is already in the job object. Any fields that is None will be |
| provided a default value. |
| |
| @param |
| the_job: the tko job object that will be serialized. |
| tag: contains the job name and the afe_job_id |
| binaryfilename: the name of the file that will be written to |
| |
| @return the filename of the file that contains the |
| binary of the serialized object. |
| """ |
| |
| pb_job = tko_pb2.Job() |
| self.set_pb_job(the_job, pb_job, tag) |
| |
| out = open(binaryfilename, 'wb') |
| try: |
| out.write(pb_job.SerializeToString()) |
| finally: |
| out.close() |
| |
| |
| def set_afe_job_id_and_tag(self, pb_job, tag): |
| """Sets the pb job's afe_job_id and tag field. |
| |
| @param |
| pb_job: the pb job that will have it's fields set. |
| tag: used to set pb_job.tag and pb_job.afe_job_id. |
| """ |
| pb_job.tag = tag |
| pb_job.afe_job_id = utils.get_afe_job_id(tag) |
| |
| |
| # getter setter methods |
| def get_tko_job(self, job): |
| """Creates a a new tko job object from the pb job object. |
| |
| Uses getter methods on the pb objects to extract all the |
| attributes and finally constructs a tko job object using the |
| models.job constructor. |
| |
| @param |
| job: a pb job where data is being extracted from. |
| |
| @return a tko job object. |
| """ |
| |
| fields_dict = self.get_trivial_attr(job, self.job_type_dict) |
| |
| fields_dict['tests'] = [self.get_tko_test(test) for test in job.tests] |
| |
| fields_dict['keyval_dict'] = dict((keyval.name, keyval.value) |
| for keyval in job.keyval_dict) |
| |
| newjob = models.job(fields_dict['dir'], fields_dict['user'], |
| fields_dict['label'], |
| fields_dict['machine'], |
| fields_dict['queued_time'], |
| fields_dict['started_time'], |
| fields_dict['finished_time'], |
| fields_dict['machine_owner'], |
| fields_dict['machine_group'], |
| fields_dict['aborted_by'], |
| fields_dict['aborted_on'], |
| fields_dict['keyval_dict']) |
| |
| newjob.tests.extend(fields_dict['tests']) |
| |
| return newjob |
| |
| |
| def set_pb_job(self, tko_job, pb_job, tag): |
| """Set the fields for the new job object. |
| |
| Method takes in a tko job and an empty protocol buffer job |
| object. Then safely sets all the appropriate field by first |
| testing if the value in the original object is None. |
| |
| @param |
| tko_job: a tko job instance that will have it's values |
| transfered to the new job |
| pb_job: a new instance of the job class provided in the |
| protocol buffer. |
| tag: used to set pb_job.tag and pb_job.afe_job_id. |
| """ |
| |
| self.set_trivial_attr(tko_job, pb_job, self.job_type_dict) |
| self.set_afe_job_id_and_tag(pb_job, tag) |
| |
| for test in tko_job.tests: |
| newtest = pb_job.tests.add() |
| self.set_pb_test(test, newtest) |
| |
| for key, val in tko_job.keyval_dict.iteritems(): |
| newkeyval = pb_job.keyval_dict.add() |
| newkeyval.name = key |
| newkeyval.value = str(val) |
| |
| |
| def get_tko_test(self, test): |
| """Creates a tko test from pb_test. |
| |
| Extracts data from pb_test by calling helper methods and |
| creates a tko test using the models.test constructor. |
| |
| @param: |
| test: a pb_test where fields will be extracted from. |
| |
| @return a new instance of models.test |
| """ |
| fields_dict = self.get_trivial_attr(test, self.test_type_dict) |
| |
| fields_dict['kernel'] = self.get_tko_kernel(test.kernel) |
| |
| fields_dict['iterations'] = [self.get_tko_iteration(iteration) |
| for iteration in test.iterations] |
| |
| fields_dict['attributes'] = dict((keyval.name, keyval.value) |
| for keyval in test.attributes) |
| |
| fields_dict['labels'] = list(test.labels) |
| |
| # The constructor for models.test accepts a "perf_values" list that |
| # represents performance values of the test. The empty list argument |
| # in the constructor call below represents this value and makes this |
| # code adhere properly to the models.test constructor argument list. |
| # However, the effect of the empty list is that perf values are |
| # ignored in the job_serializer module. This is ok for now because |
| # autotest does not use the current module. If job_serializer is used |
| # in the future, we need to modify the "tko.proto" protobuf file to |
| # understand the notion of perf_values, then modify this file |
| # accordingly to use it. |
| return models.test(fields_dict['subdir'], |
| fields_dict['testname'], |
| fields_dict['status'], |
| fields_dict['reason'], |
| fields_dict['kernel'], |
| fields_dict['machine'], |
| fields_dict['started_time'], |
| fields_dict['finished_time'], |
| fields_dict['iterations'], |
| fields_dict['attributes'], |
| [], |
| fields_dict['labels']) |
| |
| |
| def set_pb_test(self, tko_test, pb_test): |
| """Sets the various fields of test object of the tko protocol. |
| |
| Method takes a tko test and a new test of the protocol buffer and |
| transfers the values in the tko test to the new test. |
| |
| @param |
| tko_test: a tko test instance. |
| pb_test: an empty protocol buffer test instance. |
| |
| """ |
| |
| self.set_trivial_attr(tko_test, pb_test, self.test_type_dict) |
| |
| self.set_pb_kernel(tko_test.kernel, pb_test.kernel) |
| |
| for current_iteration in tko_test.iterations: |
| pb_iteration = pb_test.iterations.add() |
| self.set_pb_iteration(current_iteration, pb_iteration) |
| |
| for key, val in tko_test.attributes.iteritems(): |
| newkeyval = pb_test.attributes.add() |
| newkeyval.name = key |
| newkeyval.value = str(val) |
| |
| for current_label in tko_test.labels: |
| pb_test.labels.append(current_label) |
| |
| |
| def get_tko_kernel(self, kernel): |
| """Constructs a new tko kernel object from a pb kernel object. |
| |
| Uses all the getter methods on the pb kernel object to extract |
| the attributes and constructs a new tko kernel object using |
| the model.kernel constructor. |
| |
| @param |
| kernel: a pb kernel object where data will be extracted. |
| |
| @return a new tko kernel object. |
| """ |
| |
| fields_dict = self.get_trivial_attr(kernel, self.kernel_type_dict) |
| |
| return models.kernel(fields_dict['base'], [], fields_dict['kernel_hash']) |
| |
| |
| def set_pb_kernel(self, tko_kernel, pb_kernel): |
| """Set a specific kernel of a test. |
| |
| Takes the same form of all the other setting methods. It |
| seperates the string variables from the int variables and set |
| them safely. |
| |
| @param |
| tko_kernel: a tko kernel. |
| pb_kernel: an empty protocol buffer kernel. |
| |
| """ |
| |
| self.set_trivial_attr(tko_kernel, pb_kernel, self.kernel_type_dict) |
| |
| |
| def get_tko_iteration(self, iteration): |
| """Creates a new tko iteration with the data in the provided |
| pb iteration. |
| |
| Uses the data in the pb iteration and the models.iteration |
| constructor to create a new tko iterations |
| |
| @param |
| iteration: a pb iteration instance |
| |
| @return a tko iteration instance with the same data. |
| """ |
| |
| fields_dict = self.get_trivial_attr(iteration, |
| self.iteration_type_dict) |
| |
| fields_dict['attr_keyval'] = dict((keyval.name, keyval.value) |
| for keyval in iteration.attr_keyval) |
| |
| fields_dict['perf_keyval'] = dict((keyval.name, keyval.value) |
| for keyval in iteration.perf_keyval) |
| |
| return models.iteration(fields_dict['index'], |
| fields_dict['attr_keyval'], |
| fields_dict['perf_keyval']) |
| |
| |
| def set_pb_iteration(self, tko_iteration, pb_iteration): |
| """Sets all fields for a particular iteration. |
| |
| Takes same form as all the other setting methods. Sets int, |
| str and datetime variables safely. |
| |
| @param |
| tko_iteration: a tko test iteration. |
| pb_iteration: an empty pb test iteration. |
| |
| """ |
| |
| self.set_trivial_attr(tko_iteration, pb_iteration, |
| self.iteration_type_dict) |
| |
| for key, val in tko_iteration.attr_keyval.iteritems(): |
| newkeyval = pb_iteration.attr_keyval.add() |
| newkeyval.name = key |
| newkeyval.value = str(val) |
| |
| for key, val in tko_iteration.perf_keyval.iteritems(): |
| newkeyval = pb_iteration.perf_keyval.add() |
| newkeyval.name = key |
| newkeyval.value = str(val) |
| |
| |
| def get_trivial_attr(self, obj, objdict): |
| """Get all trivial attributes from the object. |
| |
| This function is used to extract attributes from a pb job. The |
| dictionary specifies the types of each attribute in each tko |
| class. |
| |
| @param |
| obj: the pb object that is being extracted. |
| objdict: the dict that specifies the type. |
| |
| @return a dict of each attr name and it's corresponding value. |
| """ |
| |
| resultdict = {} |
| for field, field_type in objdict.items(): |
| value = getattr(obj, field) |
| if field_type in (str, int, long): |
| resultdict[field] = field_type(value) |
| elif field_type == datetime: |
| resultdict[field] = ( |
| datetime.fromtimestamp(value/1000.0)) |
| |
| return resultdict |
| |
| |
| def set_trivial_attr(self, tko_obj, pb_obj, objdict): |
| """Sets all the easy attributes appropriately according to the |
| type. |
| |
| This function is used to set all the trivial attributes |
| provided by objdict, the dictionary that specifies the types |
| of each attribute in each tko class. |
| |
| @param |
| tko_obj: the original object that has the data being copied. |
| pb_obj: the new pb object that is being copied into. |
| objdict: specifies the type of each attribute in the class we |
| are working with. |
| |
| """ |
| for attr, attr_type in objdict.iteritems(): |
| if attr_type == datetime: |
| t = getattr(tko_obj, attr) |
| if not t: |
| self.set_attr_safely(pb_obj, attr, t, int) |
| else: |
| t = mktime(t.timetuple()) + 1e-6 * t.microsecond |
| setattr(pb_obj, attr, long(t*1000)) |
| else: |
| value = getattr(tko_obj, attr) |
| self.set_attr_safely(pb_obj, attr, value, attr_type) |
| |
| |
| def set_attr_safely(self, var, attr, value, vartype): |
| """Sets a particular attribute of var if the provided value is |
| not None. |
| |
| Checks if value is None. If not, set the attribute of the var |
| to be the default value. This is necessary for the special |
| required fields of the protocol buffer. |
| |
| @param |
| var: the variable of which one of the attribute is being set. |
| attr: the attribute that is being set. |
| value: the value that is being checked |
| vartype: the expected type of the attr |
| |
| """ |
| |
| supported_types = [int, long, str] |
| if vartype in supported_types: |
| if value is None: |
| value = vartype() |
| else: |
| assert isinstance(value, vartype), ( |
| 'Unexpected type %s for attr %s, should be %s' % |
| (type(value), attr, vartype)) |
| |
| setattr(var, attr, value) |
