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Examples of Tasks, Workflows and Launch plans written in Java.
/*
* Copyright 2021 Flyte Authors
*
* Licensed 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.flyte.examples;
import com.google.auto.service.AutoService;
import com.google.auto.value.AutoValue;
import org.flyte.flytekit.SdkBindingData;
import org.flyte.flytekit.SdkBindingDataFactory;
import org.flyte.flytekit.SdkRunnableTask;
import org.flyte.flytekit.jackson.JacksonSdkType;
/** Example Flyte task that takes a name as the input and outputs a simple greeting message. */
@AutoService(SdkRunnableTask.class)
public class GreetTask extends SdkRunnableTask {
public GreetTask() {
super(JacksonSdkType.of(Input.class), JacksonSdkType.of(Output.class));
}
/**
* Generate an immutable value class that represents {@link GreetTask}'s input, which is a String.
*/
@AutoValue
public abstract static class Input {
public abstract SdkBindingData name();
public static Input create(SdkBindingData greeting) {
return new AutoValue_GreetTask_Input(greeting);
}
}
/**
* Generate an immutable value class that represents {@link GreetTask}'s output, which is a
* String.
*/
@AutoValue
public abstract static class Output {
public abstract SdkBindingData greeting();
/**
* Wraps the constructor of the generated output value class.
*
* @param greeting the String literal output of {@link GreetTask}
* @return output of GreetTask
*/
public static Output create(SdkBindingData greeting) {
return new AutoValue_GreetTask_Output(greeting);
}
}
/**
* Defines task behavior. This task takes a name as the input, wraps it in a welcome message, and
* outputs the message.
*
* @param input the name of the person to be greeted
* @return the welcome message
*/
@Override
public Output run(Input input) {
return Output.create(
SdkBindingDataFactory.of(String.format("Welcome, %s!", input.name().get())));
}
}
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