Conditions | 72 |
Total Lines | 444 |
Code Lines | 318 |
Lines | 0 |
Ratio | 0 % |
Changes | 0 |
Small methods make your code easier to understand, in particular if combined with a good name. Besides, if your method is small, finding a good name is usually much easier.
For example, if you find yourself adding comments to a method's body, this is usually a good sign to extract the commented part to a new method, and use the comment as a starting point when coming up with a good name for this new method.
Commonly applied refactorings include:
If many parameters/temporary variables are present:
Complex classes like reports.metercost.Reporting.on_get() often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
1 | import falcon |
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33 | @staticmethod |
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34 | def on_get(req, resp): |
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35 | print(req.params) |
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36 | meter_id = req.params.get('meterid') |
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37 | period_type = req.params.get('periodtype') |
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38 | base_period_start_datetime_local = req.params.get('baseperiodstartdatetime') |
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39 | base_period_end_datetime_local = req.params.get('baseperiodenddatetime') |
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40 | reporting_period_start_datetime_local = req.params.get('reportingperiodstartdatetime') |
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41 | reporting_period_end_datetime_local = req.params.get('reportingperiodenddatetime') |
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42 | |||
43 | ################################################################################################################ |
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44 | # Step 1: valid parameters |
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45 | ################################################################################################################ |
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46 | if meter_id is None: |
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47 | raise falcon.HTTPError(falcon.HTTP_400, |
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48 | title='API.BAD_REQUEST', |
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49 | description='API.INVALID_METER_ID') |
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50 | else: |
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51 | meter_id = str.strip(meter_id) |
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52 | if not meter_id.isdigit() or int(meter_id) <= 0: |
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53 | raise falcon.HTTPError(falcon.HTTP_400, |
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54 | title='API.BAD_REQUEST', |
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55 | description='API.INVALID_METER_ID') |
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56 | |||
57 | if period_type is None: |
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58 | raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST', description='API.INVALID_PERIOD_TYPE') |
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59 | else: |
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60 | period_type = str.strip(period_type) |
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61 | if period_type not in ['hourly', 'daily', 'monthly', 'yearly']: |
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62 | raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST', description='API.INVALID_PERIOD_TYPE') |
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63 | |||
64 | timezone_offset = int(config.utc_offset[1:3]) * 60 + int(config.utc_offset[4:6]) |
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65 | if config.utc_offset[0] == '-': |
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66 | timezone_offset = -timezone_offset |
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67 | |||
68 | base_start_datetime_utc = None |
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69 | if base_period_start_datetime_local is not None and len(str.strip(base_period_start_datetime_local)) > 0: |
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70 | base_period_start_datetime_local = str.strip(base_period_start_datetime_local) |
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71 | try: |
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72 | base_start_datetime_utc = datetime.strptime(base_period_start_datetime_local, '%Y-%m-%dT%H:%M:%S') |
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73 | except ValueError: |
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74 | raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST', |
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75 | description="API.INVALID_BASE_PERIOD_START_DATETIME") |
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76 | base_start_datetime_utc = base_start_datetime_utc.replace(tzinfo=timezone.utc) - \ |
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77 | timedelta(minutes=timezone_offset) |
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78 | |||
79 | base_end_datetime_utc = None |
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80 | if base_period_end_datetime_local is not None and len(str.strip(base_period_end_datetime_local)) > 0: |
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81 | base_period_end_datetime_local = str.strip(base_period_end_datetime_local) |
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82 | try: |
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83 | base_end_datetime_utc = datetime.strptime(base_period_end_datetime_local, '%Y-%m-%dT%H:%M:%S') |
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84 | except ValueError: |
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85 | raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST', |
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86 | description="API.INVALID_BASE_PERIOD_END_DATETIME") |
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87 | base_end_datetime_utc = base_end_datetime_utc.replace(tzinfo=timezone.utc) - \ |
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88 | timedelta(minutes=timezone_offset) |
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89 | |||
90 | if base_start_datetime_utc is not None and base_end_datetime_utc is not None and \ |
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91 | base_start_datetime_utc >= base_end_datetime_utc: |
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92 | raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST', |
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93 | description='API.INVALID_BASE_PERIOD_END_DATETIME') |
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94 | |||
95 | if reporting_period_start_datetime_local is None: |
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96 | raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST', |
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97 | description="API.INVALID_REPORTING_PERIOD_START_DATETIME") |
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98 | else: |
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99 | reporting_period_start_datetime_local = str.strip(reporting_period_start_datetime_local) |
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100 | try: |
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101 | reporting_start_datetime_utc = datetime.strptime(reporting_period_start_datetime_local, |
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102 | '%Y-%m-%dT%H:%M:%S') |
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103 | except ValueError: |
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104 | raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST', |
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105 | description="API.INVALID_REPORTING_PERIOD_START_DATETIME") |
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106 | reporting_start_datetime_utc = reporting_start_datetime_utc.replace(tzinfo=timezone.utc) - \ |
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107 | timedelta(minutes=timezone_offset) |
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108 | |||
109 | if reporting_period_end_datetime_local is None: |
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110 | raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST', |
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111 | description="API.INVALID_REPORTING_PERIOD_END_DATETIME") |
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112 | else: |
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113 | reporting_period_end_datetime_local = str.strip(reporting_period_end_datetime_local) |
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114 | try: |
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115 | reporting_end_datetime_utc = datetime.strptime(reporting_period_end_datetime_local, |
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116 | '%Y-%m-%dT%H:%M:%S') |
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117 | except ValueError: |
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118 | raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST', |
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119 | description="API.INVALID_REPORTING_PERIOD_END_DATETIME") |
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120 | reporting_end_datetime_utc = reporting_end_datetime_utc.replace(tzinfo=timezone.utc) - \ |
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121 | timedelta(minutes=timezone_offset) |
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122 | |||
123 | if reporting_start_datetime_utc >= reporting_end_datetime_utc: |
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124 | raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST', |
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125 | description='API.INVALID_REPORTING_PERIOD_END_DATETIME') |
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126 | |||
127 | ################################################################################################################ |
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128 | # Step 2: query the meter and energy category |
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129 | ################################################################################################################ |
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130 | cnx_system = mysql.connector.connect(**config.myems_system_db) |
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131 | cursor_system = cnx_system.cursor() |
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132 | |||
133 | cnx_energy = mysql.connector.connect(**config.myems_energy_db) |
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134 | cursor_energy = cnx_energy.cursor() |
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135 | |||
136 | cnx_billing = mysql.connector.connect(**config.myems_billing_db) |
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137 | cursor_billing = cnx_billing.cursor() |
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138 | |||
139 | cnx_historical = mysql.connector.connect(**config.myems_historical_db) |
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140 | cursor_historical = cnx_historical.cursor() |
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141 | |||
142 | cursor_system.execute(" SELECT m.id, m.name, m.cost_center_id, m.energy_category_id, " |
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143 | " ec.name, ec.unit_of_measure, ec.kgce, ec.kgco2e " |
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144 | " FROM tbl_meters m, tbl_energy_categories ec " |
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145 | " WHERE m.id = %s AND m.energy_category_id = ec.id ", (meter_id,)) |
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146 | row_meter = cursor_system.fetchone() |
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147 | if row_meter is None: |
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148 | if cursor_system: |
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149 | cursor_system.close() |
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150 | if cnx_system: |
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151 | cnx_system.disconnect() |
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152 | |||
153 | if cursor_energy: |
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154 | cursor_energy.close() |
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155 | if cnx_energy: |
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156 | cnx_energy.disconnect() |
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157 | |||
158 | if cursor_billing: |
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159 | cursor_billing.close() |
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160 | if cnx_billing: |
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161 | cnx_billing.disconnect() |
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162 | |||
163 | if cursor_historical: |
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164 | cursor_historical.close() |
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165 | if cnx_historical: |
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166 | cnx_historical.disconnect() |
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167 | raise falcon.HTTPError(falcon.HTTP_404, title='API.NOT_FOUND', description='API.METER_NOT_FOUND') |
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168 | |||
169 | meter = dict() |
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170 | meter['id'] = row_meter[0] |
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171 | meter['name'] = row_meter[1] |
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172 | meter['cost_center_id'] = row_meter[2] |
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173 | meter['energy_category_id'] = row_meter[3] |
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174 | meter['energy_category_name'] = row_meter[4] |
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175 | meter['unit_of_measure'] = config.currency_unit |
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176 | meter['kgce'] = row_meter[6] |
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177 | meter['kgco2e'] = row_meter[7] |
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178 | |||
179 | ################################################################################################################ |
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180 | # Step 3: query associated points |
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181 | ################################################################################################################ |
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182 | point_list = list() |
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183 | cursor_system.execute(" SELECT p.id, p.name, p.units, p.object_type " |
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184 | " FROM tbl_meters m, tbl_meters_points mp, tbl_points p " |
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185 | " WHERE m.id = %s AND m.id = mp.meter_id AND mp.point_id = p.id " |
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186 | " ORDER BY p.id ", (meter['id'],)) |
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187 | rows_points = cursor_system.fetchall() |
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188 | if rows_points is not None and len(rows_points) > 0: |
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189 | for row in rows_points: |
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190 | point_list.append({"id": row[0], "name": row[1], "units": row[2], "object_type": row[3]}) |
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191 | |||
192 | ################################################################################################################ |
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193 | # Step 4: query base period energy consumption |
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194 | ################################################################################################################ |
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195 | query = (" SELECT start_datetime_utc, actual_value " |
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196 | " FROM tbl_meter_hourly " |
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197 | " WHERE meter_id = %s " |
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198 | " AND start_datetime_utc >= %s " |
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199 | " AND start_datetime_utc < %s " |
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200 | " ORDER BY start_datetime_utc ") |
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201 | cursor_energy.execute(query, (meter['id'], base_start_datetime_utc, base_end_datetime_utc)) |
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202 | rows_meter_hourly = cursor_energy.fetchall() |
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203 | |||
204 | rows_meter_periodically = utilities.aggregate_hourly_data_by_period(rows_meter_hourly, |
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205 | base_start_datetime_utc, |
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206 | base_end_datetime_utc, |
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207 | period_type) |
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208 | base = dict() |
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209 | base['timestamps'] = list() |
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210 | base['values'] = list() |
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211 | base['total_in_category'] = Decimal(0.0) |
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212 | base['total_in_kgce'] = Decimal(0.0) |
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213 | base['total_in_kgco2e'] = Decimal(0.0) |
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214 | |||
215 | for row_meter_periodically in rows_meter_periodically: |
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216 | current_datetime_local = row_meter_periodically[0].replace(tzinfo=timezone.utc) + \ |
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217 | timedelta(minutes=timezone_offset) |
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218 | if period_type == 'hourly': |
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219 | current_datetime = current_datetime_local.strftime('%Y-%m-%dT%H:%M:%S') |
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220 | elif period_type == 'daily': |
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221 | current_datetime = current_datetime_local.strftime('%Y-%m-%d') |
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222 | elif period_type == 'monthly': |
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223 | current_datetime = current_datetime_local.strftime('%Y-%m') |
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224 | elif period_type == 'yearly': |
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225 | current_datetime = current_datetime_local.strftime('%Y') |
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226 | |||
227 | actual_value = Decimal(0.0) if row_meter_periodically[1] is None \ |
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228 | else row_meter_periodically[1] |
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229 | base['timestamps'].append(current_datetime) |
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230 | base['total_in_kgce'] += actual_value * meter['kgce'] |
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231 | base['total_in_kgco2e'] += actual_value * meter['kgco2e'] |
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232 | |||
233 | ################################################################################################################ |
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234 | # Step 5: query base period energy cost |
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235 | ################################################################################################################ |
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236 | query = (" SELECT start_datetime_utc, actual_value " |
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237 | " FROM tbl_meter_hourly " |
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238 | " WHERE meter_id = %s " |
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239 | " AND start_datetime_utc >= %s " |
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240 | " AND start_datetime_utc < %s " |
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241 | " ORDER BY start_datetime_utc ") |
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242 | cursor_billing.execute(query, (meter['id'], base_start_datetime_utc, base_end_datetime_utc)) |
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243 | rows_meter_hourly = cursor_billing.fetchall() |
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244 | |||
245 | rows_meter_periodically = utilities.aggregate_hourly_data_by_period(rows_meter_hourly, |
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246 | base_start_datetime_utc, |
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247 | base_end_datetime_utc, |
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248 | period_type) |
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249 | |||
250 | base['values'] = list() |
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251 | base['total_in_category'] = Decimal(0.0) |
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252 | |||
253 | for row_meter_periodically in rows_meter_periodically: |
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254 | actual_value = Decimal(0.0) if row_meter_periodically[1] is None \ |
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255 | else row_meter_periodically[1] |
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256 | base['values'].append(actual_value) |
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257 | base['total_in_category'] += actual_value |
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258 | |||
259 | ################################################################################################################ |
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260 | # Step 6: query reporting period energy consumption |
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261 | ################################################################################################################ |
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262 | query = (" SELECT start_datetime_utc, actual_value " |
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263 | " FROM tbl_meter_hourly " |
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264 | " WHERE meter_id = %s " |
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265 | " AND start_datetime_utc >= %s " |
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266 | " AND start_datetime_utc < %s " |
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267 | " ORDER BY start_datetime_utc ") |
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268 | cursor_energy.execute(query, (meter['id'], reporting_start_datetime_utc, reporting_end_datetime_utc)) |
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269 | rows_meter_hourly = cursor_energy.fetchall() |
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270 | |||
271 | rows_meter_periodically = utilities.aggregate_hourly_data_by_period(rows_meter_hourly, |
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272 | reporting_start_datetime_utc, |
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273 | reporting_end_datetime_utc, |
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274 | period_type) |
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275 | reporting = dict() |
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276 | reporting['timestamps'] = list() |
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277 | reporting['values'] = list() |
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278 | reporting['total_in_category'] = Decimal(0.0) |
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279 | reporting['total_in_kgce'] = Decimal(0.0) |
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280 | reporting['total_in_kgco2e'] = Decimal(0.0) |
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281 | |||
282 | for row_meter_periodically in rows_meter_periodically: |
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283 | current_datetime_local = row_meter_periodically[0].replace(tzinfo=timezone.utc) + \ |
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284 | timedelta(minutes=timezone_offset) |
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285 | if period_type == 'hourly': |
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286 | current_datetime = current_datetime_local.strftime('%Y-%m-%dT%H:%M:%S') |
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287 | elif period_type == 'daily': |
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288 | current_datetime = current_datetime_local.strftime('%Y-%m-%d') |
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289 | elif period_type == 'monthly': |
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290 | current_datetime = current_datetime_local.strftime('%Y-%m') |
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291 | elif period_type == 'yearly': |
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292 | current_datetime = current_datetime_local.strftime('%Y') |
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293 | |||
294 | actual_value = Decimal(0.0) if row_meter_periodically[1] is None \ |
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295 | else row_meter_periodically[1] |
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296 | |||
297 | reporting['timestamps'].append(current_datetime) |
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298 | reporting['total_in_kgce'] += actual_value * meter['kgce'] |
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299 | reporting['total_in_kgco2e'] += actual_value * meter['kgco2e'] |
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300 | |||
301 | ################################################################################################################ |
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302 | # Step 7: query reporting period energy cost |
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303 | ################################################################################################################ |
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304 | query = (" SELECT start_datetime_utc, actual_value " |
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305 | " FROM tbl_meter_hourly " |
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306 | " WHERE meter_id = %s " |
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307 | " AND start_datetime_utc >= %s " |
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308 | " AND start_datetime_utc < %s " |
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309 | " ORDER BY start_datetime_utc ") |
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310 | cursor_billing.execute(query, (meter['id'], reporting_start_datetime_utc, reporting_end_datetime_utc)) |
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311 | rows_meter_hourly = cursor_billing.fetchall() |
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312 | |||
313 | rows_meter_periodically = utilities.aggregate_hourly_data_by_period(rows_meter_hourly, |
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314 | reporting_start_datetime_utc, |
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315 | reporting_end_datetime_utc, |
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316 | period_type) |
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317 | |||
318 | for row_meter_periodically in rows_meter_periodically: |
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319 | actual_value = Decimal(0.0) if row_meter_periodically[1] is None \ |
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320 | else row_meter_periodically[1] |
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321 | |||
322 | reporting['values'].append(actual_value) |
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323 | reporting['total_in_category'] += actual_value |
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324 | |||
325 | ################################################################################################################ |
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326 | # Step 8: query tariff data |
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327 | ################################################################################################################ |
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328 | parameters_data = dict() |
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329 | parameters_data['names'] = list() |
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330 | parameters_data['timestamps'] = list() |
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331 | parameters_data['values'] = list() |
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332 | |||
333 | tariff_dict = utilities.get_energy_category_tariffs(meter['cost_center_id'], |
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334 | meter['energy_category_id'], |
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335 | reporting_start_datetime_utc, |
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336 | reporting_end_datetime_utc) |
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337 | tariff_timestamp_list = list() |
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338 | tariff_value_list = list() |
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339 | for k, v in tariff_dict.items(): |
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340 | # convert k from utc to local |
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341 | k = k + timedelta(minutes=timezone_offset) |
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342 | tariff_timestamp_list.append(k.isoformat()[0:19]) |
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343 | tariff_value_list.append(v) |
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344 | |||
345 | parameters_data['names'].append('TARIFF-' + meter['energy_category_name']) |
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346 | parameters_data['timestamps'].append(tariff_timestamp_list) |
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347 | parameters_data['values'].append(tariff_value_list) |
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348 | |||
349 | ################################################################################################################ |
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350 | # Step 9: query associated points data |
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351 | ################################################################################################################ |
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352 | for point in point_list: |
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353 | point_values = [] |
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354 | point_timestamps = [] |
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355 | if point['object_type'] == 'ANALOG_VALUE': |
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356 | query = (" SELECT utc_date_time, actual_value " |
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357 | " FROM tbl_analog_value " |
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358 | " WHERE point_id = %s " |
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359 | " AND utc_date_time BETWEEN %s AND %s " |
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360 | " ORDER BY utc_date_time ") |
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361 | cursor_historical.execute(query, (point['id'], |
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362 | reporting_start_datetime_utc, |
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363 | reporting_end_datetime_utc)) |
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364 | rows = cursor_historical.fetchall() |
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365 | |||
366 | if rows is not None and len(rows) > 0: |
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367 | for row in rows: |
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368 | current_datetime_local = row[0].replace(tzinfo=timezone.utc) + \ |
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369 | timedelta(minutes=timezone_offset) |
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370 | current_datetime = current_datetime_local.strftime('%Y-%m-%dT%H:%M:%S') |
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371 | point_timestamps.append(current_datetime) |
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372 | point_values.append(row[1]) |
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373 | |||
374 | elif point['object_type'] == 'ENERGY_VALUE': |
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375 | query = (" SELECT utc_date_time, actual_value " |
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376 | " FROM tbl_energy_value " |
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377 | " WHERE point_id = %s " |
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378 | " AND utc_date_time BETWEEN %s AND %s " |
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379 | " ORDER BY utc_date_time ") |
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380 | cursor_historical.execute(query, (point['id'], |
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381 | reporting_start_datetime_utc, |
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382 | reporting_end_datetime_utc)) |
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383 | rows = cursor_historical.fetchall() |
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384 | |||
385 | if rows is not None and len(rows) > 0: |
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386 | for row in rows: |
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387 | current_datetime_local = row[0].replace(tzinfo=timezone.utc) + \ |
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388 | timedelta(minutes=timezone_offset) |
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389 | current_datetime = current_datetime_local.strftime('%Y-%m-%dT%H:%M:%S') |
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390 | point_timestamps.append(current_datetime) |
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391 | point_values.append(row[1]) |
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392 | elif point['object_type'] == 'DIGITAL_VALUE': |
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393 | query = (" SELECT utc_date_time, actual_value " |
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394 | " FROM tbl_digital_value " |
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395 | " WHERE point_id = %s " |
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396 | " AND utc_date_time BETWEEN %s AND %s ") |
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397 | cursor_historical.execute(query, (point['id'], |
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398 | reporting_start_datetime_utc, |
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399 | reporting_end_datetime_utc)) |
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400 | rows = cursor_historical.fetchall() |
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401 | |||
402 | if rows is not None and len(rows) > 0: |
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403 | for row in rows: |
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404 | current_datetime_local = row[0].replace(tzinfo=timezone.utc) + \ |
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405 | timedelta(minutes=timezone_offset) |
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406 | current_datetime = current_datetime_local.strftime('%Y-%m-%dT%H:%M:%S') |
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407 | point_timestamps.append(current_datetime) |
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408 | point_values.append(row[1]) |
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409 | |||
410 | parameters_data['names'].append(point['name'] + ' (' + point['units'] + ')') |
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411 | parameters_data['timestamps'].append(point_timestamps) |
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412 | parameters_data['values'].append(point_values) |
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413 | |||
414 | ################################################################################################################ |
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415 | # Step 10: construct the report |
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416 | ################################################################################################################ |
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417 | if cursor_system: |
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418 | cursor_system.close() |
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419 | if cnx_system: |
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420 | cnx_system.disconnect() |
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421 | |||
422 | if cursor_energy: |
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423 | cursor_energy.close() |
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424 | if cnx_energy: |
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425 | cnx_energy.disconnect() |
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426 | |||
427 | if cursor_billing: |
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428 | cursor_billing.close() |
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429 | if cnx_billing: |
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430 | cnx_billing.disconnect() |
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431 | |||
432 | if cursor_historical: |
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433 | cursor_historical.close() |
||
434 | if cnx_historical: |
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435 | cnx_historical.disconnect() |
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436 | result = { |
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437 | "meter": { |
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438 | "cost_center_id": meter['cost_center_id'], |
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439 | "energy_category_id": meter['energy_category_id'], |
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440 | "energy_category_name": meter['energy_category_name'], |
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441 | "unit_of_measure": config.currency_unit, |
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442 | "kgce": meter['kgce'], |
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443 | "kgco2e": meter['kgco2e'], |
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444 | }, |
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445 | "base_period": { |
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446 | "total_in_category": base['total_in_category'], |
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447 | "total_in_kgce": base['total_in_kgce'], |
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448 | "total_in_kgco2e": base['total_in_kgco2e'], |
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449 | "timestamps": base['timestamps'], |
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450 | "values": base['values'], |
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451 | }, |
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452 | "reporting_period": { |
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453 | "increment_rate": |
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454 | (reporting['total_in_category']-base['total_in_category'])/base['total_in_category'] |
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455 | if base['total_in_category'] > 0 else None, |
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456 | "total_in_category": reporting['total_in_category'], |
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457 | "total_in_kgce": reporting['total_in_kgce'], |
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458 | "total_in_kgco2e": reporting['total_in_kgco2e'], |
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459 | "timestamps": reporting['timestamps'], |
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460 | "values": reporting['values'], |
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461 | }, |
||
462 | "parameters": { |
||
463 | "names": parameters_data['names'], |
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464 | "timestamps": parameters_data['timestamps'], |
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465 | "values": parameters_data['values'] |
||
466 | }, |
||
467 | } |
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468 | # export result to Excel file and then encode the file to base64 string |
||
469 | result['excel_bytes_base64'] = \ |
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470 | excelexporters.metercost.export(result, |
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471 | meter['name'], |
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472 | reporting_period_start_datetime_local, |
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473 | reporting_period_end_datetime_local, |
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474 | period_type) |
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475 | |||
476 | resp.body = json.dumps(result) |
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477 |