mirror of https://github.com/dapr/quickstarts.git
60 lines
2.0 KiB
Markdown
60 lines
2.0 KiB
Markdown
# Workflow Basics
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This tutorial covers the fundamentals of authoring Dapr Workflows. For more information about the fundamentals of Dapr Workflows, see the [Dapr docs](https://docs.dapr.io/developing-applications/building-blocks/workflow/workflow-features-concepts/).
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## Inspect the code
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Open the [`BasicWorkflow.java`](src/main/java/io/dapr/springboot/examples/basic/BasicWorkflow.java) file in the `tutorials/workflow/java/task-chaining/src/main/java/io/dapr/springboot/examples/wfp/chain` folder. This file contains the definition for the workflow.
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The workflow consists of two activities: `Activity1` and `Activity2`, which are called in sequence, where the result of Activity1 is used as an input for Activity2. You can find the Activity definitions in the `activities` folder.
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```mermaid
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graph LR
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SW((Start
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Workflow))
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A1[Activity1]
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A2[Activity2]
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EW((End
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Workflow))
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SW --> A1
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A1 --> A2
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A2 --> EW
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```
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## Run the tutorial
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1. Use a terminal to navigate to the `tutorials/workflow/java/fundamentals` folder.
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2. Build and run the project using Maven.
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```bash
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mvn spring-boot:test-run
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```
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3. Use the POST request in the [`fundamentals.http`](./fundamentals.http) file to start the workflow, or use this cURL command:
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```bash
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curl -i --request POST "http://localhost:8080/start?input=One"
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```
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The input for the workflow is a string with the value `This`. The expected app logs are as follows:
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```text
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i.d.springboot.examples.basic.Activity1 : io.dapr.springboot.examples.basic.Activity1 : Received input: One
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i.d.springboot.examples.basic.Activity2 : io.dapr.springboot.examples.basic.Activity2 : Received input: One Two
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```
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5. Use the GET request in the [`fundamentals.http`](./fundamentals.http) file to get the status of the workflow, or use this cURL command:
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```bash
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curl --request GET --url http://localhost:8080/output
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```
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6. The expected serialized output of the workflow is:
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```txt
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One Two Three
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```
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6. Stop the application by pressing `Ctrl+C`.
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