RED-6686 - token based web request interceptor

src/main/java/com/knecon/fforesight/keycloakcommons/JwtBasedTenantInterceptor.java

@@ -0,0 +1,41 @@
+package com.knecon.fforesight.keycloakcommons;
+
+import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
+import org.springframework.stereotype.Component;
+import org.springframework.ui.ModelMap;
+import org.springframework.web.context.request.WebRequest;
+import org.springframework.web.context.request.WebRequestInterceptor;
+
+import com.knecon.fforesight.keycloakcommons.security.TokenRealmService;
+import com.knecon.fforesight.tenantcommons.TenantContext;
+
+import lombok.RequiredArgsConstructor;
+
+@Component
+@RequiredArgsConstructor
+@ConditionalOnClass(WebRequestInterceptor.class)
+public class JwtBasedTenantInterceptor implements WebRequestInterceptor {
+
+    private final TokenRealmService tokenRealmService;
+
+
+    @Override
+    public void preHandle(WebRequest request) {
+
+        tokenRealmService.getRealm().ifPresent(TenantContext::setTenantId);
+    }
+
+
+    @Override
+    public void postHandle(WebRequest request, ModelMap model) {
+
+        TenantContext.clear();
+    }
+
+
+    @Override
+    public void afterCompletion(WebRequest request, Exception ex) {
+
+    }
+
+}