From afde10b1bb567692450d10538c224b6a3c15ef7e Mon Sep 17 00:00:00 2001
From: Michael <cloudyonspring@126.com>
Date: Tue, 30 Aug 2022 10:50:54 +0800
Subject: [PATCH] zh: localize /reference/config/analysis/ist0151/ (#11725)

Signed-off-by: windsonsea <haifeng.yao@daocloud.io>

Signed-off-by: windsonsea <haifeng.yao@daocloud.io>
---
 .../config/analysis/ist0151/index.md          | 104 ++++++++++++++++++
 1 file changed, 104 insertions(+)
 create mode 100644 content/zh/docs/reference/config/analysis/ist0151/index.md

diff --git a/content/zh/docs/reference/config/analysis/ist0151/index.md b/content/zh/docs/reference/config/analysis/ist0151/index.md
new file mode 100644
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@@ -0,0 +1,104 @@
+---
+title: EnvoyFilterUsesRelativeOperation
+layout: analysis-message
+owner: istio/wg-user-experience-maintainers
+test: n/a
+---
+
+当 `EnvoyFilter` 没有优先级且使用相对补丁操作（`INVALID`、`MERGE`、`REMOVE`、`INSERT_BEFORE`、`INSERT_AFTER`、`REPLACE`）时，
+会出现此消息。使用相对补丁操作意味着当评估当前的 `EnvoyFilter` 过滤器时该操作依赖于另一个过滤器。
+为了确保按照用户想要的顺序应用 `EnvoyFilters`，应该赋予一个优先级或者应该使用一个非相对操作（`ADD` 或 `INSERT_FIRST`）。
+
+## 示例 {#example}
+
+以一个带有 `INSERT_BEFORE` 补丁操作的 `EnvoyFilter` 为例：
+
+{{< text yaml >}}
+apiVersion: networking.istio.io/v1alpha3
+kind: EnvoyFilter
+metadata:
+  name: test-relative
+  namespace: bookinfo
+spec:
+  workloadSelector:
+    labels:
+      app: reviews2
+  configPatches:
+    # 第一个补丁将 Lua 过滤器添加到 listener/http 连接管理器
+  - applyTo: HTTP_FILTER
+    match:
+      context: SIDECAR_INBOUND
+      listener:
+        portNumber: 8080
+        filterChain:
+          filter:
+            name: "envoy.filters.network.http_connection_manager"
+            subFilter:
+              name: "envoy.filters.http.router"
+    patch:
+      operation: INSERT_BEFORE
+      value: # Lua filter specification
+       name: envoy.lua
+       typed_config:
+          "@type": "type.googleapis.com/envoy.extensions.filters.http.lua.v3.Lua"
+          inlineCode: |
+            function envoy_on_request(request_handle)
+              -- Make an HTTP call to an upstream host with the following headers, body, and timeout.
+              local headers, body = request_handle:httpCall(
+               "lua_cluster",
+               {
+                [":method"] = "POST",
+                [":path"] = "/acl",
+                [":authority"] = "internal.org.net"
+               },
+              "authorize call",
+              5000)
+            end
+{{< /text >}}
+
+## 解决办法 {#how-to-resolve}
+
+由于原来使用了 `INSERT_BEFORE` 的相对操作，所以现在将其更改为 `INSERT_FIRST` 的绝对操作将解决这个问题：
+
+{{< text yaml >}}
+apiVersion: networking.istio.io/v1alpha3
+kind: EnvoyFilter
+metadata:
+  name: test-relative
+  namespace: bookinfo
+spec:
+  workloadSelector:
+    labels:
+      app: reviews2
+  configPatches:
+    # 第一个补丁将 Lua 过滤器添加到 listener/http 连接管理器
+  - applyTo: HTTP_FILTER
+    match:
+      context: SIDECAR_INBOUND
+      listener:
+        portNumber: 8080
+        filterChain:
+          filter:
+            name: "envoy.filters.network.http_connection_manager"
+            subFilter:
+              name: "envoy.filters.http.router"
+    patch:
+      operation: INSERT_BEFORE
+      value: # Lua 过滤器规范
+       name: envoy.lua
+       typed_config:
+          "@type": "type.googleapis.com/envoy.extensions.filters.http.lua.v3.Lua"
+          inlineCode: |
+            function envoy_on_request(request_handle)
+              -- Make an HTTP call to an upstream host with the following headers, body, and timeout.
+              local headers, body = request_handle:httpCall(
+               "lua_cluster",
+               {
+                [":method"] = "POST",
+                [":path"] = "/acl",
+                [":authority"] = "internal.org.net"
+               },
+              "authorize call",
+              5000)
+            end
+{{< /text >}}