fix(radixtree_host_uri): correct matched path

Fix apache#5077

Signed-off-by: spacewander <spacewanderlzx@gmail.com>

apisix/http/router/radixtree_host_uri.lua

@@ -80,6 +80,7 @@ local function push_host_router(route, host_routes, only_uri_routes)
             api_ctx.matched_params = nil
             api_ctx.matched_route = route
             api_ctx.curr_req_matched = match_opts.matched
+            api_ctx.real_curr_req_matched_path = match_opts.matched._path
         end
     }
 
@@ -162,6 +163,10 @@ function _M.match(api_ctx)
         local host_uri = api_ctx.var.host
         local ok = host_router:dispatch(host_uri:reverse(), match_opts, api_ctx, match_opts)
         if ok then
+            if api_ctx.real_curr_req_matched_path then
+                api_ctx.curr_req_matched._path = api_ctx.real_curr_req_matched_path
+                api_ctx.real_curr_req_matched_path = nil
+            end
             return true
         end
     end

t/router/radixtree-host-uri3.t

@@ -136,3 +136,111 @@ hello world
 404
 404
 hello world
+
+
+
+=== TEST 2: check matched._path
+--- config
+    location /t {
+        content_by_lua_block {
+            local http = require "resty.http"
+            local uri = "http://127.0.0.1:" .. ngx.var.server_port
+                        .. "/hello"
+            local t = require("lib.test_admin").test
+            local code, body = t('/apisix/admin/routes/1',
+                ngx.HTTP_PUT,
+                [[{
+                    "hosts": ["foo.com"],
+                    "plugins": {
+                        "serverless-post-function": {
+                            "functions" : ["return function(conf, ctx)
+                                        ngx.log(ngx.WARN, 'matched uri: ', ctx.curr_req_matched._path);
+                                        end"]
+                        }
+                    },
+                    "upstream": {
+                        "nodes": {
+                            "127.0.0.1:1980": 1
+                        },
+                        "type": "roundrobin"
+                    },
+                    "uri": "/hello"
+                }]]
+                )
+
+            if code >= 300 then
+                ngx.status = code
+                ngx.say(body)
+                return
+            end
+            ngx.say(body)
+        }
+    }
+--- response_body
+passed
+
+
+
+=== TEST 3: hit, plain path
+--- request
+GET /hello
+--- more_headers
+Host: foo.com
+--- grep_error_log eval
+qr/matched uri: \/\w+/
+--- grep_error_log_out
+matched uri: /hello
+
+
+
+=== TEST 4: check matched._path, wildcard
+--- config
+    location /t {
+        content_by_lua_block {
+            local http = require "resty.http"
+            local uri = "http://127.0.0.1:" .. ngx.var.server_port
+                        .. "/hello"
+            local t = require("lib.test_admin").test
+            local code, body = t('/apisix/admin/routes/1',
+                ngx.HTTP_PUT,
+                [[{
+                    "hosts": ["foo.com"],
+                    "plugins": {
+                        "serverless-post-function": {
+                            "functions" : ["return function(conf, ctx)
+                                        ngx.log(ngx.WARN, 'matched uri: ', ctx.curr_req_matched._path);
+                                        end"]
+                        }
+                    },
+                    "upstream": {
+                        "nodes": {
+                            "127.0.0.1:1980": 1
+                        },
+                        "type": "roundrobin"
+                    },
+                    "uri": "/*"
+                }]]
+                )
+
+            if code >= 300 then
+                ngx.status = code
+                ngx.say(body)
+                return
+            end
+            ngx.say(body)
+        }
+    }
+--- response_body
+passed
+
+
+
+=== TEST 5: hit
+--- request
+GET /hello
+--- more_headers
+Host: foo.com
+--- grep_error_log eval
+qr/matched uri: \/\S+,/
+--- grep_error_log_out
+matched uri: /*,