mirror of https://github.com/dapr/quickstarts.git
67 lines
1.9 KiB
Markdown
67 lines
1.9 KiB
Markdown
# Dapr Bindings (Dapr SDK)
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In this quickstart, you'll create a microservice to demonstrate Dapr's bindings API to work with external systems as inputs and outputs. The service listens to input binding events from a system CRON and then outputs the contents of local data to a PostreSql output binding.
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Visit [this](https://docs.dapr.io/developing-applications/building-blocks/bindings/) link for more information about Dapr and Bindings.
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> **Note:** This example leverages the Dapr SDK. If you are looking for the example using HTTP REST only [click here](../http).
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This quickstart includes one service:
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- Java service `batch`
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### Run and initialize PostgreSQL container
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1. Open a new terminal, change directories to `../../db`, and run the container with [Docker Compose](https://docs.docker.com/compose/):
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<!-- STEP
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name: Run and initialize PostgreSQL container
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expected_return_code:
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background: true
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sleep: 60
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timeout_seconds: 120
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-->
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```bash
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cd ../../db
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docker compose up
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```
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<!-- END_STEP -->
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### Run Java service with Dapr
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2. Open a new terminal window, change directories to `./batch` in the quickstart directory and run:
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<!-- STEP
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name: Install Java dependencies
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-->
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```bash
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cd ./batch
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mvn clean install
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```
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<!-- END_STEP -->
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3. Run the java service app with Dapr:
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<!-- STEP
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name: Run batch-sdk service
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working_dir: ./batch
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expected_stdout_lines:
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- 'insert into orders (orderid, customer, price) values (1, ''John Smith'', 100.32)'
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- 'insert into orders (orderid, customer, price) values (2, ''Jane Bond'', 15.4)'
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- 'insert into orders (orderid, customer, price) values (3, ''Tony James'', 35.56)'
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- 'Finished processing batch'
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expected_stderr_lines:
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output_match_mode: substring
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sleep: 11
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timeout_seconds: 30
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-->
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```bash
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dapr run --app-id batch-sdk --app-port 8080 --resources-path ../../../components -- java -jar target/BatchProcessingService-0.0.1-SNAPSHOT.jar
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```
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<!-- END_STEP -->
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