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1 #!/usr/bin/python2.5 |
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2 # |
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3 # Copyright 2009 the Melange authors. |
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4 # |
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5 # Licensed under the Apache License, Version 2.0 (the "License"); |
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6 # you may not use this file except in compliance with the License. |
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7 # You may obtain a copy of the License at |
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8 # |
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9 # http://www.apache.org/licenses/LICENSE-2.0 |
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10 # |
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11 # Unless required by applicable law or agreed to in writing, software |
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12 # distributed under the License is distributed on an "AS IS" BASIS, |
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13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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14 # See the License for the specific language governing permissions and |
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15 # limitations under the License. |
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16 |
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17 """The module conversion updates are defined in this module. |
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18 """ |
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19 |
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20 __authors__ = [ |
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21 '"Lennard de Rijk" <ljvderijk@gmail.com>', |
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22 ] |
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23 |
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24 |
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25 from google.appengine.api.labs import taskqueue |
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26 from google.appengine.ext import db |
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27 |
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28 from django.http import HttpResponse |
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29 |
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30 from soc.tasks.helper import error_handler |
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31 |
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32 |
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33 # batch size to use when going through the entities |
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34 DEF_BATCH_SIZE = 10 |
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35 |
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36 |
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37 def startUpdateWithUrl(request, task_url): |
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38 """Spawns an update task for the given task URL. |
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39 |
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40 Args: |
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41 request: Django Request object |
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42 task_url: The URL used to run this update task |
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43 |
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44 Returns: |
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45 True iff the new task is successfully added to the Task Queue API |
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46 """ |
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47 |
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48 new_task = taskqueue.Task(url=task_url) |
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49 new_task.add() |
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50 |
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51 return True |
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52 |
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53 |
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54 def runProgramConversionUpdate(request, *args, **kwargs): |
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55 """Appengine Task that converts Programs into GSoCPrograms. |
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56 |
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57 The POST dict can contain the key where to start the conversion. |
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58 |
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59 Args: |
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60 request: Django Request object |
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61 """ |
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62 |
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63 from soc.logic.models.program import logic as program_logic |
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64 |
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65 from soc.modules.gsoc.models.program import GSoCProgram |
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66 |
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67 fields = {} |
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68 |
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69 post_dict = request.POST |
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70 |
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71 start_key = post_dict.get('start_key') |
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72 |
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73 if start_key: |
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74 # retrieve the last Program entity that was converted |
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75 start = program_logic.getFromKeyName(start_key) |
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76 |
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77 if not start: |
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78 # invalid starting key specified, log and return OK |
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79 return error_handler.logErrorAndReturnOK( |
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80 'Invalid Program Key specified: %s' %(start_key)) |
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81 |
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82 fields['__key__ >'] = start.key() |
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83 |
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84 # get batch_size number of Programs |
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85 entities = program_logic.getForFields(fields, limit=DEF_BATCH_SIZE) |
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86 |
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87 # get all the properties that are part of each Programs |
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88 program_model = program_logic.getModel() |
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89 program_properties = program_model.properties().keys() |
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90 |
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91 # use this to store all the new GSoCPrograms |
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92 gsoc_programs = [] |
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93 |
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94 for entity in entities: |
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95 gsoc_properties = {} |
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96 |
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97 for program_property in program_properties: |
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98 # copy over all the information from the program entity |
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99 gsoc_properties[program_property] = getattr(entity, program_property) |
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100 |
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101 # create the new GSoCProgram entity and prepare it to be stored |
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102 gsoc_program_entity = GSoCProgram(key_name=entity.key().name(), **gsoc_properties) |
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103 gsoc_programs.append(gsoc_program_entity) |
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104 |
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105 # store all the new GSoCPrograms |
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106 db.put(gsoc_programs) |
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107 |
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108 if len(entities) == DEF_BATCH_SIZE: |
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109 # spawn new task starting from the last |
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110 new_start = entities[DEF_BATCH_SIZE-1].key().id_or_name() |
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111 |
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112 # pass along these params as POST to the new task |
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113 task_params = {'start_key': new_start} |
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114 |
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115 new_task = taskqueue.Task(params=task_params, |
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116 url=request.META['PATH_INFO']) |
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117 new_task.add() |
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118 |
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119 # task completed, return OK |
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120 return HttpResponse('OK') |