Polish #615, add gateway example

spring-cloud-alibaba-examples/sentinel-example/sentinel-zuul-example/src/main/resources/api.json

@@ -0,0 +1,32 @@
+[
+  {
+    "apiName": "some_customized_api",
+    "predicateItems": [
+      {
+        "pattern": "/product/baz"
+      },
+      {
+        "pattern": "/product/foo/**",
+        "matchStrategy": 1
+      },
+      {
+        "items": [
+          {
+            "pattern": "/spring-cloud/**"
+          },
+          {
+            "pattern": "/spring-cloud-alibaba/**"
+          }
+        ]
+      }
+    ]
+  },
+  {
+    "apiName": "another_customized_api",
+    "predicateItems": [
+      {
+        "pattern": "/ahas"
+      }
+    ]
+  }
+]

spring-cloud-alibaba-examples/sentinel-example/sentinel-zuul-example/src/main/resources/application.yaml

@@ -0,0 +1,40 @@
+server:
+  port: 18086
+spring:
+  application:
+    name: sentinel-zuul
+  cloud:
+    sentinel:
+      datasource.ds2.file:
+        file: "classpath: gateway.json"
+        ruleType: gateway
+      datasource.ds1.file:
+        file: "classpath: api.json"
+        ruleType: api
+      transport:
+        dashboard: localhost:9999
+      filter:
+        enabled: false
+
+management.endpoints.web.exposure.include: "*"
+
+
+zuul.routes.my-service.path: "/product/foo/**"
+zuul.routes.my-service.service-id: "my-service"
+
+zuul.routes.my-service2.path: "/my-service2/**"
+zuul.routes.my-service2.service-id: "my-service2"
+
+zuul.routes.my-service3.path: "/my-service3/**"
+zuul.routes.my-service3.service-id: "my-service3"
+
+zuul.routes.my-service4.path: "/my-service4/**"
+zuul.routes.my-service4.service-id: "my-service4"
+
+
+spring.cloud.sentinel.zuul.order.pre: 2000
+spring.cloud.sentinel.zuul.order.post: 500
+spring.cloud.sentinel.zuul.order.error: -100
+
+
+spring.cloud.sentinel.zuul.enabled: true

spring-cloud-alibaba-examples/sentinel-example/sentinel-zuul-example/src/main/resources/gateway.json

@@ -0,0 +1,26 @@
+[
+  {
+    "resource": "some_customized_api",
+    "count": 0
+  },
+  {
+    "resource": "my-service2",
+    "count": 0
+  },
+  {
+    "resource": "my-service3",
+    "count": 0,
+    "paramItem": {
+      "parseStrategy": 2,
+      "fieldName": "Spring-Cloud-Alibaba"
+    }
+  },
+  {
+    "resource": "my-service4",
+    "count": 0,
+    "paramItem": {
+      "parseStrategy": 3,
+      "fieldName": "name"
+    }
+  }
+]