Demonstration of multiple dynamically instantiated beans

[demos/multiple-beans] / src / main / java / de / juplo / demos / multiplebeans / MultipleBeansEnvironmentPostProcessor.java

diff --git a/src/main/java/de/juplo/demos/multiplebeans/MultipleBeansEnvironmentPostProcessor.java b/src/main/java/de/juplo/demos/multiplebeans/MultipleBeansEnvironmentPostProcessor.java
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+++ b/src/main/java/de/juplo/demos/multiplebeans/MultipleBeansEnvironmentPostProcessor.java
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+package de.juplo.demos.multiplebeans;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.env.EnvironmentPostProcessor;
+import org.springframework.core.env.ConfigurableEnvironment;
+import org.springframework.core.env.PropertySource;
+
+import java.util.Arrays;
+
+public class MultipleBeansEnvironmentPostProcessor implements EnvironmentPostProcessor {
+
+    @Override
+    public void postProcessEnvironment(ConfigurableEnvironment environment, SpringApplication application) {
+        String sites = null;
+        for (PropertySource source : environment.getPropertySources()) {
+            Object found = source.getProperty("juplo.sites");
+            if (found != null)
+                sites = found.toString();
+        }
+
+        if (sites == null)
+            throw new IllegalArgumentException("Parameter juplo.sites is not set!");
+
+        application.addInitializers(new MultipleBeansApplicationContextInitializer(
+                Arrays.stream(sites.split(","))
+                .map(site -> site.trim())
+                .toArray(size -> new String[size])));
+    }
+}
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