feat: add HTTP migration bridges and extensible API binding

examples/contracts/compatibility.api

@@ -0,0 +1,64 @@
+syntax = "v1"
+
+scalar BusinessID (
+ goImport: "git.yuntuo.hk/k2safe/go-omni/examples/compatibility/ids"
+ goType: ID
+ jsonInput: string | int64
+ jsonOutput: string
+ text: true
+)
+
+type EchoReq {
+ ID BusinessID `json:"id"`
+ Data any `json:"data"`
+ Legacy interface{} `json:"legacy,optional"`
+}
+type EchoResp {
+ ID BusinessID `json:"id"`
+ Data any `json:"data"`
+}
+type ItemReq {
+ ID BusinessID `path:"id"`
+}
+type CustomReq {
+ Value string `json:"value"`
+}
+type CustomResp {
+ Value string `json:"value"`
+}
+
+@server (group: demo)
+service compatibility-api {
+ @body (maxBytes: 2097152)
+ @handler echo
+ post /echo (EchoReq) returns (EchoResp)
+
+ @handler item
+ get /items/:id (ItemReq) returns (EchoResp)
+
+ @binding custom
+ @body (maxBytes: 512)
+ @handler custom
+ post /custom (CustomReq) returns (CustomResp)
+
+ @handlerMode manual
+ @body (mode: multipart
+ maxBytes: 65536)
+ @handler upload
+ post /upload
+
+ @handlerMode manual
+ @body (mode: raw
+ maxBytes: 128)
+ @produces "text/plain"
+ @handler callback
+ post /callback
+}
+
+@server (group: files)
+service compatibility-api {
+ @handlerMode manual
+ @produces "application/octet-stream"
+ @handler download
+ get /download
+}