Adds a specific exception for HttpClient errors.

Author: simonbrowndotje

structurizr-client/src/main/java/com/structurizr/http/HttpClient.java

@@ -63,7 +63,7 @@ public RemoteContent get(String url) {
      */
     public RemoteContent get(String url, boolean cache) {
         if (!isAllowed(url)) {
-            throw new RuntimeException("Access to " + url + " is not permitted");
+            throw new HttpClientException("Access to " + url + " is not permitted");
         }
 
         RemoteContent remoteContent = contentCache.get(url);
@@ -97,10 +97,10 @@ public RemoteContent get(String url, boolean cache) {
                         contentCache.put(url, remoteContent);
                     }
                 } else {
-                    throw new RuntimeException("The content from " + url + " could not be loaded: HTTP status=" + httpStatus);
+                    throw new HttpClientException("The content from " + url + " could not be loaded: HTTP status=" + httpStatus);
                 }
             } catch (Exception ioe) {
-                throw new RuntimeException("The content from " + url + " could not be loaded: " + ioe.getMessage());
+                throw new HttpClientException("The content from " + url + " could not be loaded: " + ioe.getMessage());
             }
         }
 

structurizr-client/src/main/java/com/structurizr/http/HttpClientException.java

@@ -0,0 +1,9 @@
+package com.structurizr.http;
+
+public class HttpClientException extends RuntimeException {
+
+    public HttpClientException(String message) {
+        super(message);
+    }
+
+}