From 0f07e96969e562962865686059bd4007dc0c161b Mon Sep 17 00:00:00 2001
From: Felix Barnsteiner <felix.barnsteiner@elastic.co>
Date: Thu, 6 Aug 2020 15:54:07 +0200
Subject: [PATCH 1/2] Support for Logback 1.1

---
 .../co/elastic/logging/logback/EcsEncoder.java  | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/logback-ecs-encoder/src/main/java/co/elastic/logging/logback/EcsEncoder.java b/logback-ecs-encoder/src/main/java/co/elastic/logging/logback/EcsEncoder.java
index f8a144ae..bce264d4 100644
--- a/logback-ecs-encoder/src/main/java/co/elastic/logging/logback/EcsEncoder.java
+++ b/logback-ecs-encoder/src/main/java/co/elastic/logging/logback/EcsEncoder.java
@@ -33,6 +33,8 @@
 import co.elastic.logging.JsonUtils;
 import org.slf4j.Marker;
 
+import java.io.IOException;
+import java.io.OutputStream;
 import java.nio.charset.Charset;
 import java.util.ArrayList;
 import java.util.Iterator;
@@ -48,6 +50,7 @@ public class EcsEncoder extends EncoderBase<ILoggingEvent> {
     private ThrowableProxyConverter throwableProxyConverter;
     private boolean includeOrigin;
     private final List<Pair> additionalFields = new ArrayList<Pair>();
+    private OutputStream os;
 
     @Override
     public byte[] headerBytes() {
@@ -62,6 +65,20 @@ public void start() {
         eventDataset = EcsJsonSerializer.computeEventDataset(eventDataset, serviceName);
     }
 
+    // to support Logback 1.1
+    public void init(OutputStream os) {
+        this.os = os;
+    }
+
+    // to support Logback 1.1
+    public void doEncode(ILoggingEvent event) throws IOException {
+        os.write(encode(event));
+    }
+
+    // to support Logback 1.1
+    public void close() throws IOException {
+    }
+
     @Override
     public byte[] encode(ILoggingEvent event) {
         StringBuilder builder = new StringBuilder();

From 2580ff74c9fe4c85051206588a00ed34c8cf98b4 Mon Sep 17 00:00:00 2001
From: Felix Barnsteiner <felix.barnsteiner@elastic.co>
Date: Fri, 30 Oct 2020 17:16:03 +0100
Subject: [PATCH 2/2] Clarify comments and change docs min version is 1.1

---
 logback-ecs-encoder/README.md                    |  2 +-
 .../co/elastic/logging/logback/EcsEncoder.java   | 16 ++++++++++++----
 2 files changed, 13 insertions(+), 5 deletions(-)

diff --git a/logback-ecs-encoder/README.md b/logback-ecs-encoder/README.md
index 3980df8b..c2463b29 100644
--- a/logback-ecs-encoder/README.md
+++ b/logback-ecs-encoder/README.md
@@ -1,6 +1,6 @@
 # ECS Logback Encoder
 
-The minimum required logback version is 1.2.
+The minimum required logback version is 1.1.
 
 ## Step 1: add dependency
 
diff --git a/logback-ecs-encoder/src/main/java/co/elastic/logging/logback/EcsEncoder.java b/logback-ecs-encoder/src/main/java/co/elastic/logging/logback/EcsEncoder.java
index bce264d4..b009e9e6 100644
--- a/logback-ecs-encoder/src/main/java/co/elastic/logging/logback/EcsEncoder.java
+++ b/logback-ecs-encoder/src/main/java/co/elastic/logging/logback/EcsEncoder.java
@@ -64,18 +64,26 @@ public void start() {
         throwableProxyConverter.start();
         eventDataset = EcsJsonSerializer.computeEventDataset(eventDataset, serviceName);
     }
-
-    // to support Logback 1.1
+    /**
+     * This method has been removed in logback 1.2.
+     * To make this lib backwards compatible with logback 1.1 we have implement this method.
+     */
     public void init(OutputStream os) {
         this.os = os;
     }
 
-    // to support Logback 1.1
+    /**
+     * This method has been removed in logback 1.2.
+     * To make this lib backwards compatible with logback 1.1 we have implement this method.
+     */
     public void doEncode(ILoggingEvent event) throws IOException {
         os.write(encode(event));
     }
 
-    // to support Logback 1.1
+    /**
+     * This method has been removed in logback 1.2.
+     * To make this lib backwards compatible with logback 1.1 we have implement this method.
+     */
     public void close() throws IOException {
     }