allow overriding ElasticsearchWriter for those who want a non restrictive https mode

src/main/java/com/internetitem/logback/elasticsearch/AbstractElasticsearchPublisher.java

@@ -69,7 +69,7 @@ public AbstractElasticsearchPublisher(Context context, ErrorReporter errorReport
 		this.propertySerializer = new PropertySerializer();
 	}
 
-	private static ElasticsearchOutputAggregator configureOutputAggregator(Settings settings, ErrorReporter errorReporter, HttpRequestHeaders httpRequestHeaders)  {
+	protected ElasticsearchOutputAggregator configureOutputAggregator(Settings settings, ErrorReporter errorReporter, HttpRequestHeaders httpRequestHeaders)  {
 		ElasticsearchOutputAggregator spigot = new ElasticsearchOutputAggregator(settings, errorReporter);
 
 		if (settings.isLogsToStderr()) {

src/main/java/com/internetitem/logback/elasticsearch/writer/ElasticsearchWriter.java

@@ -97,7 +97,7 @@ public boolean hasPendingData() {
 		return sendBuffer.length() != 0;
 	}
 
-	private static String slurpErrors(HttpURLConnection urlConnection) {
+	protected  String slurpErrors(HttpURLConnection urlConnection) {
 		try {
 			InputStream stream = urlConnection.getErrorStream();
 			if (stream == null) {
@@ -117,4 +117,30 @@ private static String slurpErrors(HttpURLConnection urlConnection) {
 		}
 	}
 
+    public StringBuilder getSendBuffer() {
+        return sendBuffer;
+    }
+
+    public Settings getSettings() {
+        return settings;
+    }
+
+    public Collection<HttpRequestHeader> getHeaderList() {
+        return headerList;
+    }
+
+    public ErrorReporter getErrorReporter() {
+        return errorReporter;
+    }
+
+    public boolean isBufferExceeded() {
+        return bufferExceeded;
+    }
+
+    public void setBufferExceeded(boolean bufferExceeded) {
+        this.bufferExceeded = bufferExceeded;
+    }
+
+
+
 }