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Add basic SpringBoot sample (temporalio#574)
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‎.gitignore‎

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/build
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/core/build
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/springboot/build
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/springboot-basic/build
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/out
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/core/out
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/springboot/out
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/springboot-basic/out
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.classpath
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.project
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.settings/

‎README.md‎

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@@ -6,6 +6,7 @@ Temporal using the [Java SDK](https://github.com/temporalio/sdk-java).
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It contains two modules:
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* [Core](/core): showcases many different SDK features.
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* [SpringBoot](/springboot): showcases SpringBoot autoconfig integration.
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* [SpringBoot Basic](/springboot-basic): Minimal sample showing SpringBoot autoconfig integration without any extra external dependencies.
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## Learn more about Temporal and Java SDK
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1. Start SpringBoot from main repo dir:
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./gradlew bootRun
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./gradlew :springboot:bootRun
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To run the basic sample run
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./gradlew :springboot-basic:bootRun
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2. Navigate to [localhost:3030](http://localhost:3030)
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‎settings.gradle‎

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rootProject.name = 'temporal-java-samples'
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include 'core'
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include 'springboot'
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include 'springboot-basic'

‎springboot-basic/build.gradle‎

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apply plugin: 'org.springframework.boot'
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dependencies {
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implementation "org.springframework.boot:spring-boot-starter-web"
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implementation "org.springframework.boot:spring-boot-starter-thymeleaf"
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implementation "org.springframework.boot:spring-boot-starter-actuator"
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implementation "io.temporal:temporal-spring-boot-starter-alpha:$javaSDKVersion"
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testImplementation "org.springframework.boot:spring-boot-starter-test"
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runtimeOnly "io.micrometer:micrometer-registry-prometheus"
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dependencies {
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errorproneJavac('com.google.errorprone:javac:9+181-r4173-1')
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if (JavaVersion.current().isJava11Compatible()) {
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errorprone('com.google.errorprone:error_prone_core:2.22.0')
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} else {
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errorprone('com.google.errorprone:error_prone_core:2.22.0')
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}
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}
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}
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bootJar {
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enabled = false
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}
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jar {
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enabled = true
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}

‎springboot-basic/src/main/java/io/temporal/samples/springboot/SamplesController.java‎

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/*
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* Copyright (c) 2020 Temporal Technologies, Inc. All Rights Reserved
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*
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* Copyright 2012-2016 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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*
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* Modifications copyright (C) 2017 Uber Technologies, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License"). You may not
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* use this file except in compliance with the License. A copy of the License is
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* located at
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*
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* http://aws.amazon.com/apache2.0
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*
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* or in the "license" file accompanying this file. This file is distributed on
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* an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
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* express or implied. See the License for the specific language governing
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* permissions and limitations under the License.
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*/
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package io.temporal.samples.springboot;
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import io.temporal.client.WorkflowClient;
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import io.temporal.client.WorkflowOptions;
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import io.temporal.samples.springboot.hello.HelloWorkflow;
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import io.temporal.samples.springboot.hello.model.Person;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.http.HttpStatus;
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import org.springframework.http.MediaType;
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import org.springframework.http.ResponseEntity;
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import org.springframework.stereotype.Controller;
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import org.springframework.ui.Model;
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import org.springframework.web.bind.annotation.*;
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@Controller
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public class SamplesController {
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@Autowired WorkflowClient client;
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@GetMapping("/hello")
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public String hello(Model model) {
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model.addAttribute("sample", "Say Hello");
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return "hello";
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}
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@PostMapping(
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value = "/hello",
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consumes = {MediaType.APPLICATION_JSON_VALUE},
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produces = {MediaType.TEXT_HTML_VALUE})
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ResponseEntity<String> helloSample(@RequestBody Person person) {
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HelloWorkflow workflow =
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client.newWorkflowStub(
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HelloWorkflow.class,
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WorkflowOptions.newBuilder()
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.setTaskQueue("HelloSampleTaskQueue")
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.setWorkflowId("HelloSample")
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.build());
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// bypass thymeleaf, don't return template name just result
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return new ResponseEntity<>("\"" + workflow.sayHello(person) + "\"", HttpStatus.OK);
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}
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}

‎springboot-basic/src/main/java/io/temporal/samples/springboot/TemporalSpringbootSamplesApplication.java‎

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/*
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* Copyright (c) 2020 Temporal Technologies, Inc. All Rights Reserved
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*
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* Copyright 2012-2016 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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*
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* Modifications copyright (C) 2017 Uber Technologies, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License"). You may not
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* use this file except in compliance with the License. A copy of the License is
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* located at
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*
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* http://aws.amazon.com/apache2.0
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*
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* or in the "license" file accompanying this file. This file is distributed on
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* an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
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* express or implied. See the License for the specific language governing
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* permissions and limitations under the License.
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*/
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package io.temporal.samples.springboot;
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import org.springframework.boot.SpringApplication;
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import org.springframework.boot.autoconfigure.SpringBootApplication;
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@SpringBootApplication
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public class TemporalSpringbootSamplesApplication {
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public static void main(String[] args) {
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SpringApplication.run(TemporalSpringbootSamplesApplication.class, args).start();
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}
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}

‎springboot-basic/src/main/java/io/temporal/samples/springboot/hello/HelloActivity.java‎

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/*
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* Copyright (c) 2020 Temporal Technologies, Inc. All Rights Reserved
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*
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* Copyright 2012-2016 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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*
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* Modifications copyright (C) 2017 Uber Technologies, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License"). You may not
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* use this file except in compliance with the License. A copy of the License is
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* located at
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*
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* http://aws.amazon.com/apache2.0
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*
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* or in the "license" file accompanying this file. This file is distributed on
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* an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
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* express or implied. See the License for the specific language governing
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* permissions and limitations under the License.
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*/
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package io.temporal.samples.springboot.hello;
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import io.temporal.activity.ActivityInterface;
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import io.temporal.samples.springboot.hello.model.Person;
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@ActivityInterface
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public interface HelloActivity {
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String hello(Person person);
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}

‎springboot-basic/src/main/java/io/temporal/samples/springboot/hello/HelloActivityImpl.java‎

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/*
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* Copyright (c) 2020 Temporal Technologies, Inc. All Rights Reserved
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*
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* Copyright 2012-2016 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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*
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* Modifications copyright (C) 2017 Uber Technologies, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License"). You may not
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* use this file except in compliance with the License. A copy of the License is
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* located at
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*
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* http://aws.amazon.com/apache2.0
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*
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* or in the "license" file accompanying this file. This file is distributed on
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* an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
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* express or implied. See the License for the specific language governing
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* permissions and limitations under the License.
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*/
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package io.temporal.samples.springboot.hello;
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import io.temporal.samples.springboot.hello.model.Person;
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import io.temporal.spring.boot.ActivityImpl;
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import org.springframework.beans.factory.annotation.Value;
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import org.springframework.stereotype.Component;
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@Component
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@ActivityImpl(taskQueues = "HelloSampleTaskQueue")
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public class HelloActivityImpl implements HelloActivity {
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@Value("${samples.data.language}")
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private String language;
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@Override
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public String hello(Person person) {
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String greeting = language.equals("spanish") ? "Hola " : "Hello ";
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return greeting + person.getFirstName() + " " + person.getLastName() + "!";
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}
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}

‎springboot-basic/src/main/java/io/temporal/samples/springboot/hello/HelloWorkflow.java‎

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/*
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* Copyright (c) 2020 Temporal Technologies, Inc. All Rights Reserved
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*
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* Copyright 2012-2016 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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*
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* Modifications copyright (C) 2017 Uber Technologies, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License"). You may not
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* use this file except in compliance with the License. A copy of the License is
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* located at
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*
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* http://aws.amazon.com/apache2.0
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*
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* or in the "license" file accompanying this file. This file is distributed on
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* an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
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* express or implied. See the License for the specific language governing
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* permissions and limitations under the License.
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*/
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package io.temporal.samples.springboot.hello;
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import io.temporal.samples.springboot.hello.model.Person;
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import io.temporal.workflow.WorkflowInterface;
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import io.temporal.workflow.WorkflowMethod;
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@WorkflowInterface
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public interface HelloWorkflow {
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@WorkflowMethod
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String sayHello(Person person);
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}

‎springboot-basic/src/main/java/io/temporal/samples/springboot/hello/HelloWorkflowImpl.java‎

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/*
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* Copyright (c) 2020 Temporal Technologies, Inc. All Rights Reserved
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*
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* Copyright 2012-2016 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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*
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* Modifications copyright (C) 2017 Uber Technologies, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License"). You may not
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* use this file except in compliance with the License. A copy of the License is
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* located at
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*
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* http://aws.amazon.com/apache2.0
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*
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* or in the "license" file accompanying this file. This file is distributed on
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* an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
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* express or implied. See the License for the specific language governing
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* permissions and limitations under the License.
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*/
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package io.temporal.samples.springboot.hello;
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import io.temporal.activity.ActivityOptions;
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import io.temporal.samples.springboot.hello.model.Person;
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import io.temporal.spring.boot.WorkflowImpl;
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import io.temporal.workflow.Workflow;
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import java.time.Duration;
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@WorkflowImpl(taskQueues = "HelloSampleTaskQueue")
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public class HelloWorkflowImpl implements HelloWorkflow {
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private HelloActivity activity =
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Workflow.newActivityStub(
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HelloActivity.class,
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ActivityOptions.newBuilder().setStartToCloseTimeout(Duration.ofSeconds(2)).build());
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@Override
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public String sayHello(Person person) {
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return activity.hello(person);
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}
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}

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