Now includes received secret token in event.

src/main/java/org/gitlab4j/api/systemhooks/AbstractSystemHookEvent.java

@@ -6,6 +6,7 @@ public abstract class AbstractSystemHookEvent implements SystemHookEvent {
 
     private String requestUrl;
     private String requestQuesryString;
+    private String requestSecretToken;
 
     @Override
     public void setRequestUrl(String requestUrl) {
@@ -28,4 +29,15 @@ public abstract class AbstractSystemHookEvent implements SystemHookEvent {
     public String getRequestQueryString() {
         return (requestQuesryString);
     }
+
+    @Override
+    public void setRequestSecretToken(String requestSecretToken) {
+        this.requestSecretToken = requestSecretToken;
+    }
+
+    @Override
+    @JsonIgnore
+    public String getRequestSecretToken() {
+        return (requestSecretToken);
+    }
 }

src/main/java/org/gitlab4j/api/systemhooks/SystemHookEvent.java

@@ -40,6 +40,9 @@ public interface SystemHookEvent {
 
     void setRequestQueryString(String requestQuesryString);
     @JsonIgnore String getRequestQueryString();
+
+    void setRequestSecretToken(String requestSecretToken);
+    @JsonIgnore String getRequestSecretToken();
 }
 
 // All of the following class definitions are needed to make the above work.

src/main/java/org/gitlab4j/api/systemhooks/SystemHookManager.java

@@ -158,6 +158,9 @@ public class SystemHookManager implements HookManager {
             event.setRequestUrl(requestUrl != null ? requestUrl.toString() : null);
             event.setRequestQueryString(request.getQueryString());
 
+            String secretToken = request.getHeader("X-Gitlab-Token");
+            event.setRequestSecretToken(secretToken);
+
         } catch (Exception e) {
             LOGGER.warning(String.format("Error processing JSON data, exception=%s, error=%s",
                     e.getClass().getSimpleName(), e.getMessage()));

src/main/java/org/gitlab4j/api/webhook/AbstractEvent.java

@@ -6,6 +6,7 @@ public abstract class AbstractEvent implements Event {
 
     private String requestUrl;
     private String requestQuesryString;
+    private String secretToken;
 
     @Override
     public void setRequestUrl(String requestUrl) {
@@ -28,4 +29,15 @@ public abstract class AbstractEvent implements Event {
     public String getRequestQueryString() {
         return (requestQuesryString);
     }
+
+    @Override
+    public void setRequestSecretToken(String secretToken) {
+        this.secretToken = secretToken;
+    }
+
+    @Override
+    @JsonIgnore
+    public String getRequestSecretToken() {
+        return (secretToken);
+    }
 }

src/main/java/org/gitlab4j/api/webhook/AbstractPushEvent.java

@@ -26,6 +26,7 @@ public abstract class AbstractPushEvent {
 
     private String requestUrl;
     private String requestQuesryString;
+    private String requestSecretToken;
 
     public String getEventName() {
         return (eventName);
@@ -157,6 +158,16 @@ public abstract class AbstractPushEvent {
         return (requestQuesryString);
     }
 
+
+    public void setRequestSecretToken(String secretToken) {
+        this.requestSecretToken = secretToken;
+    }
+
+    @JsonIgnore
+    public String getRequestSecretToken() {
+        return (requestSecretToken);
+    }
+
     /**
      * Gets the branch name from the ref. Will return null if the ref does not start with "refs/heads/".
      * 

src/main/java/org/gitlab4j/api/webhook/Event.java

@@ -31,4 +31,9 @@ public interface Event {
 
     @JsonIgnore
     String getRequestQueryString();
+
+    void setRequestSecretToken(String secretToken);
+
+    @JsonIgnore
+    String getRequestSecretToken();
 }

src/main/java/org/gitlab4j/api/webhook/WebHookManager.java

@@ -138,6 +138,10 @@ public class WebHookManager implements HookManager {
 
             event.setRequestUrl(request.getRequestURL().toString());
             event.setRequestQueryString(request.getQueryString());
+
+            String secretToken = request.getHeader("X-Gitlab-Token");
+            event.setRequestSecretToken(secretToken);
+
             fireEvent(event);
             return (event);