dshunter107 commented on code in PR #2207: URL: https://github.com/apache/streampipes/pull/2207#discussion_r1403819433
########## streampipes-extensions/streampipes-processors-transformation-jvm/src/main/java/org/apache/streampipes/processors/transformation/jvm/processor/datetime/DateTimeProcessor.java: ########## @@ -0,0 +1,137 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + +package org.apache.streampipes.processors.transformation.jvm.processor.datetime; + +import org.apache.streampipes.commons.exceptions.SpRuntimeException; +import org.apache.streampipes.extensions.api.pe.context.EventProcessorRuntimeContext; +import org.apache.streampipes.extensions.api.pe.routing.SpOutputCollector; +import org.apache.streampipes.model.DataProcessorType; +import org.apache.streampipes.model.graph.DataProcessorDescription; +import org.apache.streampipes.model.runtime.Event; +import org.apache.streampipes.model.schema.PropertyScope; +import org.apache.streampipes.sdk.builder.ProcessingElementBuilder; +import org.apache.streampipes.sdk.builder.StreamRequirementsBuilder; +import org.apache.streampipes.sdk.extractor.ProcessingElementParameterExtractor; +import org.apache.streampipes.sdk.helpers.EpProperties; +import org.apache.streampipes.sdk.helpers.EpRequirements; +import org.apache.streampipes.sdk.helpers.Labels; +import org.apache.streampipes.sdk.helpers.Locales; +import org.apache.streampipes.sdk.helpers.Options; +import org.apache.streampipes.sdk.helpers.OutputStrategies; +import org.apache.streampipes.sdk.utils.Assets; +import org.apache.streampipes.wrapper.params.compat.ProcessorParams; +import org.apache.streampipes.wrapper.standalone.StreamPipesDataProcessor; + +import java.time.LocalDateTime; +import java.time.ZoneId; +import java.time.ZonedDateTime; +import java.time.format.DateTimeFormatter; +import java.time.format.DateTimeParseException; +import java.util.Iterator; +import java.util.Set; + +public class DateTimeProcessor extends StreamPipesDataProcessor { + + public static final String INPUT_DATETIME_FIELD_ID = "dateTimeField"; + public static final String OUTPUT_DATETIME_RUNTIME_NAME = "dateTime"; + public static final String SELECTED_INPUT_TIMEZONE = "inputTimeZone"; + + private String[] possibleTimeZones; + private String streamInputDateTimeFieldName; + private String selectedTimeZone; + + @Override + public DataProcessorDescription declareModel() { + possibleTimeZones = getTimeZoneOptions(); + DataProcessorDescription dpd = ProcessingElementBuilder + .create("org.apache.streampipes.processors.transformation.jvm.timeoperator.datetime", 0) + .category(DataProcessorType.STRING_OPERATOR, DataProcessorType.TIME) + .withLocales(Locales.EN) + .withAssets(Assets.DOCUMENTATION, Assets.ICON) + .requiredStream(StreamRequirementsBuilder.create() + .requiredPropertyWithUnaryMapping( + EpRequirements.stringReq(), + Labels.withId(INPUT_DATETIME_FIELD_ID), + PropertyScope.NONE) + .build()) + .requiredSingleValueSelection(Labels.withId(SELECTED_INPUT_TIMEZONE), + Options.from(possibleTimeZones)) + .outputStrategy(OutputStrategies.append( + EpProperties.timestampProperty(OUTPUT_DATETIME_RUNTIME_NAME))) + .build(); + + return dpd; + } + + @Override + public void onInvocation(ProcessorParams parameters, SpOutputCollector spOutputCollector, + EventProcessorRuntimeContext runtimeContext) throws SpRuntimeException { + ProcessingElementParameterExtractor extractor = parameters.extractor(); + this.streamInputDateTimeFieldName = extractor.mappingPropertyValue(INPUT_DATETIME_FIELD_ID); + this.selectedTimeZone = extractor.selectedSingleValue(SELECTED_INPUT_TIMEZONE, String.class); + } + + @Override + public void onEvent(Event event, SpOutputCollector collector) { + String dateTimeString = event.getFieldBySelector(streamInputDateTimeFieldName).getAsPrimitive().getAsString(); + // DateTimeFormatter dtFormatter = detectFormat(enteredInputFormat); + DateTimeFormatter dtFormatter = DateTimeFormatter.ISO_DATE_TIME; + ZonedDateTime zdt = parseDateTime(dateTimeString, dtFormatter); + + event.addField(OUTPUT_DATETIME_RUNTIME_NAME, zdt); + collector.collect(event); + } + + @Override + public void onDetach() { + + } + + private ZonedDateTime parseDateTime(String dateTimeString, DateTimeFormatter dtf) { + ZonedDateTime zdt; + try { + zdt = ZonedDateTime.parse(dateTimeString); + + } catch (DateTimeParseException e1) { + try { + LocalDateTime ldt = LocalDateTime.parse(dateTimeString, dtf); + ZoneId timeZoneId = ZoneId.of(selectedTimeZone); + zdt = ldt.atZone(timeZoneId); + } catch (DateTimeParseException e2) { + throw new RuntimeException("Could not parse DateTime String: " + dateTimeString); + } + } + return zdt; + } + + private static String[] getTimeZoneOptions() { Review Comment: Thank you very much. I had tried to do something similar, but I could not figure out how to turn it into an Array of Strings instead of just an Array of Objects. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
