From e8e75813ab549d03b0ac482fe0e1e86ee660b8b0 Mon Sep 17 00:00:00 2001
From: Thomas <>
Date: Fri, 11 Mar 2022 11:49:05 +0100
Subject: chore(proxy): add module for stand-alone ms-specific proxy-service
 application

---
 ...ficSpringBootApplicationContextInitializer.java | 83 ++++++++++++++++++++++
 1 file changed, 83 insertions(+)
 create mode 100644 ms_specific_proxyservice/src/main/java/at/asitplus/eidas/specific/proxy/MsSpecificSpringBootApplicationContextInitializer.java

(limited to 'ms_specific_proxyservice/src/main/java/at/asitplus/eidas/specific/proxy/MsSpecificSpringBootApplicationContextInitializer.java')

diff --git a/ms_specific_proxyservice/src/main/java/at/asitplus/eidas/specific/proxy/MsSpecificSpringBootApplicationContextInitializer.java b/ms_specific_proxyservice/src/main/java/at/asitplus/eidas/specific/proxy/MsSpecificSpringBootApplicationContextInitializer.java
new file mode 100644
index 00000000..2ec08b17
--- /dev/null
+++ b/ms_specific_proxyservice/src/main/java/at/asitplus/eidas/specific/proxy/MsSpecificSpringBootApplicationContextInitializer.java
@@ -0,0 +1,83 @@
+package at.asitplus.eidas.specific.proxy;
+
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.Properties;
+
+import org.apache.commons.lang3.StringUtils;
+import org.springframework.context.ConfigurableApplicationContext;
+import org.springframework.core.env.MutablePropertySources;
+import org.springframework.core.env.PropertiesPropertySource;
+
+import at.gv.egiz.components.spring.api.SpringBootApplicationContextInitializer;
+import lombok.extern.slf4j.Slf4j;
+
+@Slf4j
+public class MsSpecificSpringBootApplicationContextInitializer extends
+    SpringBootApplicationContextInitializer {
+
+  private static final String SYSTEMD_PROP_NAME = "eidas.ms.configuration";
+  private static final String PATH_FILE_PREFIX = "file:";
+  
+  @Override
+  public void initialize(ConfigurableApplicationContext applicationContext) {    
+    String configPath = System.getProperty(SYSTEMD_PROP_NAME);
+    if (StringUtils.isNotEmpty(configPath)) {
+      log.debug("Find configuration-source from SystemD Property: '{}' ...", SYSTEMD_PROP_NAME);      
+      if (configPath.startsWith(PATH_FILE_PREFIX)) {
+        configPath = configPath.substring(PATH_FILE_PREFIX.length());
+        
+      }      
+      injectConfiguration(configPath, applicationContext);            
+
+    } else {
+      log.info("Find NO SystemD Property: '{}' Maybe no configuration available", SYSTEMD_PROP_NAME);
+      
+    }
+    
+    super.initialize(applicationContext);
+        
+  }
+  
+  private void injectConfiguration(String configPath, ConfigurableApplicationContext applicationContext) {
+    InputStream is = null;
+    try {
+      Path path = Paths.get(configPath);
+      if (Files.exists(path)) {
+        File file = new File(configPath);             
+        Properties props = new Properties();
+        is = new FileInputStream(file);
+        props.load(is);      
+        MutablePropertySources sources = applicationContext.getEnvironment().getPropertySources();       
+        sources.addFirst(new PropertiesPropertySource(SYSTEMD_PROP_NAME, props));
+        log.info("Set configuration-source from SystemD-Property: {}", SYSTEMD_PROP_NAME);
+      
+      } else {
+        log.error("Configuration from SystemD Property: '{}' at Location: {} DOES NOT exist", 
+            SYSTEMD_PROP_NAME, configPath);
+        
+      }
+      
+    } catch (IOException e) {
+      log.error("Configuration from SystemD Property: '{}' at Location: {} CAN NOT be loaded", 
+          SYSTEMD_PROP_NAME, configPath, e);
+      
+    } finally {
+      try {
+        if (is != null) {
+          is.close();
+          
+        }        
+      } catch (IOException e) {
+        log.error("Can not close InputStream of configLoader: {}", configPath, e);
+        
+      }
+    }        
+  }
+}
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