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Update React / Spring / MySQL example (#99)

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* Update README.md title from NodeJS to Spring

Signed-off-by: Friedrich Greiner <greinerfriedrich@gmail.com>

* Always restart spring backend service

Signed-off-by: Friedrich Greiner <greinerfriedrich@gmail.com>

* Also pass db-password secret to spring backend

Signed-off-by: Friedrich Greiner <greinerfriedrich@gmail.com>

* Add healthcheck to the mysql service

 - a start_period of 30s + 15s (interval * retries) should be long enough for mysql to initialize

Signed-off-by: Friedrich Greiner <greinerfriedrich@gmail.com>
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frgegr 2021-03-22 09:58:41 +01:00 • committed by GitHub
parent a92c067f75
commit a2cf9cc9f3
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4 changed files with 42 additions and 2 deletions
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30
react-java-mysql/backend/src/main/java/com/company/project/configuration/DockerSecretsProcessor.java Normal file
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package com.company.project.configuration;
import java.io.IOException;
import java.nio.charset.Charset;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.env.EnvironmentPostProcessor;
import org.springframework.core.env.ConfigurableEnvironment;
import org.springframework.core.io.FileSystemResource;
import org.springframework.core.io.Resource;
import org.springframework.util.StreamUtils;
/**
* Read property from docker secret file.
*/
public class DockerSecretsProcessor implements EnvironmentPostProcessor {
@Override
public void postProcessEnvironment(ConfigurableEnvironment environment, SpringApplication application) {
Resource resource = new FileSystemResource("/run/secrets/db-password");
if (resource.exists() && System.getProperty("MYSQL_PASSWORD") == null) {
try {
String dbPassword = StreamUtils.copyToString(resource.getInputStream(), Charset.defaultCharset());
System.setProperty("MYSQL_PASSWORD", dbPassword);
} catch (IOException e) {
throw new RuntimeException(e);
}
}
}
}

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react-java-mysql/backend/src/main/resources/META-INF/spring.factories Normal file
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org.springframework.boot.env.EnvironmentPostProcessor=com.company.project.configuration.DockerSecretsProcessor