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Markdown
122 lines
5.9 KiB
Markdown
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# Licensed to the Apache Software Foundation (ASF) under one or more
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目录
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===
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* [Route](#route)
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## Route
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*地址*：/apisix/admin/routes/{id}
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*说明*：Route 字面意思就是路由，通过定义一些规则来匹配客户端的请求，然后根据匹配结果加载并执行相应的
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插件，并把请求转发给到指定 Upstream。
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> 请求方法：
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|名字 |请求 uri|请求 body|说明 |
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|---------|-------------------------|--|------|
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|GET |/apisix/admin/routes/{id}|无|获取资源|
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|PUT |/apisix/admin/routes/{id}|{...}|根据 id 创建资源|
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|POST |/apisix/admin/routes |{...}|创建资源，id 由后台服务自动生成|
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|DELETE |/apisix/admin/routes/{id}|无|删除资源|
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|PATCH |/apisix/admin/routes/{id}/{path}|{...}|修改已有 Route 的部分内容，其他不涉及部分会原样保留。|
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> 请求参数：
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|名字 |可选项 |类型 |说明 |示例|
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|---------|---------|----|-----------|----|
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|desc |可选 |辅助 |标识路由名称、使用场景等。|客户 xxxx|
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|uri |必须 |匹配规则|除了如 `/foo/bar`、`/foo/gloo` 这种全量匹配外，使用不同 [Router](architecture-design-cn.md#router) 还允许更高级匹配，更多见 [Router](architecture-design-cn.md#router)。|"/hello"|
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|host |可选 |匹配规则|当前请求域名，比如 `foo.com`；也支持泛域名，比如 `*.foo.com`。|"foo.com"|
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|hosts |可选 |匹配规则|列表形态的 `host`，表示允许有多个不同 `host`，匹配其中任意一个即可。|{"foo.com", "*.bar.com"}|
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|remote_addr|可选 |匹配规则|客户端请求 IP 地址: `192.168.1.101`、`192.168.1.102` 以及 CIDR 格式的支持 `192.168.1.0/24`。特别的，APISIX 也完整支持 IPv6 地址匹配：`::1`，`fe80::1`, `fe80::1/64` 等。|"192.168.1.0/24"|
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|remote_addrs|可选 |匹配规则|列表形态的 `remote_addr`，表示允许有多个不同 IP 地址，符合其中任意一个即可。|{"127.0.0.1", "192.0.0.0/8", "::1"}|
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|methods |可选 |匹配规则|如果为空或没有该选项，代表没有任何 `method` 限制，也可以是一个或多个的组合：`GET`, `POST`, `PUT`, `DELETE`, `PATCH`, `HEAD`, `OPTIONS`，`CONNECT`，`TRACE`。|{"GET", "POST"}|
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|vars |可选 |匹配规则(仅支持 `radixtree` 路由)|由一个或多个`{var, operator, val}`元素组成的列表，类似这样：`{{var, operator, val}, {var, operator, val}, ...}`。例如：`{"arg_name", "==", "json"}`，表示当前请求参数 `name` 是 `json`。这里的 `var` 与 Nginx 内部自身变量命名是保持一致，所以也可以使用 `request_uri`、`host` 等；对于 `operator` 部分，目前已支持的运算符有 `==`、`~=`、`>`、`<` 和 `~~`。对于`>`和`<`两个运算符，会把结果先转换成 number 然后再做比较。查看支持的[运算符列表](#运算符列表)|{{"arg_name", "==", "json"}, {"arg_age", ">", 18}}|
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|filter_func|可选|匹配规则|用户自定义的过滤函数。可以使用它来实现特殊场景的匹配要求实现。该函数默认接受一个名为 vars 的输入参数，可以用它来获取 Nginx 变量。|function(vars) return vars["arg_name"] == "json" end|
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|plugins |可选 |Plugin|详见 [Plugin](architecture-design-cn.md#plugin) ||
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|upstream |可选 |Upstream|启用的 Upstream 配置，详见 [Upstream](architecture-design-cn.md#upstream)||
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|upstream_id|可选 |Upstream|启用的 upstream id，详见 [Upstream](architecture-design-cn.md#upstream)||
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|service_id|可选 |Service|绑定的 Service 配置，详见 [Service](architecture-design-cn.md#service)||
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|service_protocol|可选|上游协议类型|只可以是 "grpc", "http" 二选一。|默认 "http"，使用gRPC proxy 或gRPC transcode 时，必须用"grpc"|
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对于同一类参数比如 `host` 与 `hosts`，`remote_addr` 与 `remote_addrs`，是不能同时存在，二者只能选择其一。如果同时启用，接口会报错。
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示例：
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```shell
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$ curl http://127.0.0.1:9080/apisix/admin/routes/1 -X PUT -i -d '
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{
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"uri": "/index.html",
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"hosts": ["foo.com", "*.bar.com"],
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"remote_addrs": ["127.0.0.0/8"],
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"methods": ["PUT", "GET"],
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"upstream": {
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"type": "roundrobin",
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"nodes": {
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"39.97.63.215:80": 1
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}
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}
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}'
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HTTP/1.1 201 Created
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Date: Sat, 31 Aug 2019 01:17:15 GMT
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...
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```
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> 应答参数
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目前是直接返回与 etcd 交互后的结果。
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### 运算符列表
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|运算符 |描述 |例子|
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|--------|-----------|-------|
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|== |相等 |{"arg_name", "==", "json"}|
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|~= |不等于 |{"arg_name", "~=", "json"}|
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|> |大于 |{"arg_age", ">", 24}|
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|< |小于 |{"arg_age", "<", 24}|
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|~~ |正则匹配 |{"arg_name", "~~", "[a-z]+"}|
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请看下面例子，匹配请求参数 name 等于 json ，age 大于 18 且 address 开头是 China 的请求：
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```shell
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curl http://127.0.0.1:9080/apisix/admin/routes/1 -X PUT -i -d '
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{
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"uri": "/index.html",
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"vars": [
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["arg_name", "==", "json"],
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["arg_age", ">", "18"],
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["arg_address", "~~", "China.*"]
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],
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"upstream": {
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"type": "roundrobin",
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"nodes": {
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"39.97.63.215:80": 1
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}
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}
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}'
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```
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[Back to TOC](#目录)
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