From e03b55be17261ed13ddf421bcf4a804a083a7614 Mon Sep 17 00:00:00 2001
From: Thorsten Ortlepp <post@ortlepp.eu>
Date: Fri, 26 Apr 2024 00:30:46 +0200
Subject: added implementation

---
 .../eu/ortlepp/notificationsender/util/Config.java | 40 ++++++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 src/main/java/eu/ortlepp/notificationsender/util/Config.java

(limited to 'src/main/java/eu/ortlepp/notificationsender/util')

diff --git a/src/main/java/eu/ortlepp/notificationsender/util/Config.java b/src/main/java/eu/ortlepp/notificationsender/util/Config.java
new file mode 100644
index 0000000..139ea24
--- /dev/null
+++ b/src/main/java/eu/ortlepp/notificationsender/util/Config.java
@@ -0,0 +1,40 @@
+package eu.ortlepp.notificationsender.util;
+
+import software.amazon.awssdk.regions.Region;
+
+/**
+ * Required configuration values read from environment variables.
+ */
+public final class Config {
+
+  /**
+   * The region of the SNS topic. The Name of the environment variable is REGION.
+   * Value example: eu-central-1
+   */
+  public static final Region REGION;
+
+  /**
+   * The ARN of the SNS topic. The Name of the environment variable is ARN.
+   * Value example: arn:aws:sns:eu-central-1:123456789:Topic-Name
+   */
+  public static final String ARN;
+
+
+  static {
+    REGION = Region.of(getEnvVar("REGION"));
+    ARN = getEnvVar("ARN");
+  }
+
+
+  private static String getEnvVar(final String key) {
+    String value =  System.getenv(key);
+    if (value == null) {
+      throw new RuntimeException("environment variable not set: " + key);
+    }
+    return value;
+  }
+
+
+  private Config() {}
+
+}
-- 
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