111 lines
2.6 KiB
Go
111 lines
2.6 KiB
Go
package servlet
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import (
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"fmt"
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crp "git.loafle.net/commons/rpc-go/protocol"
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crr "git.loafle.net/commons/rpc-go/registry"
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"git.loafle.net/commons/server-go"
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csw "git.loafle.net/commons/server-go/web"
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cswf "git.loafle.net/commons/server-go/web/fasthttp"
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"github.com/valyala/fasthttp"
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)
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type MethodMapping struct {
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Method string
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ParamKeys []string
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}
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type RESTServlet interface {
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cswf.Servlet
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}
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type RESTServlets struct {
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cswf.Servlets
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ServerCodec crp.ServerCodec
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RPCInvoker crr.RPCInvoker
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MethodMapping map[string]MethodMapping
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}
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func (s *RESTServlets) Handle(servletCtx server.ServletCtx, ctx *fasthttp.RequestCtx) *csw.Error {
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method := string(ctx.Method())
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switch method {
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case "GET":
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return s.HandleGet(servletCtx, ctx)
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case "POST":
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return s.HandlePost(servletCtx, ctx)
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}
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return nil
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}
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func (s *RESTServlets) HandleGet(servletCtx server.ServletCtx, ctx *fasthttp.RequestCtx) *csw.Error {
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path := string(ctx.Path())
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if nil == s.MethodMapping {
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return csw.NewError(fasthttp.StatusNotFound, fmt.Errorf("Not Found for %s", path))
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}
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mapping, ok := s.MethodMapping[path]
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if !ok {
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return csw.NewError(fasthttp.StatusNotFound, fmt.Errorf("Not Found for %s", path))
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}
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method := mapping.Method
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params := make([]string, 0)
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if nil != mapping.ParamKeys && 0 < len(mapping.ParamKeys) {
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qargs := ctx.QueryArgs()
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if nil == qargs {
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return csw.NewError(fasthttp.StatusBadRequest, fmt.Errorf("Parameter is not valied"))
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}
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for _, k := range mapping.ParamKeys {
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buf := qargs.Peek(k)
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if nil == buf {
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return csw.NewError(fasthttp.StatusBadRequest, fmt.Errorf("Parameter for %s is not valied", k))
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}
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params = append(params, string(buf))
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}
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}
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reqCodec, err := s.ServerCodec.NewRequestWithString(method, params, nil)
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if nil != err {
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return csw.NewError(fasthttp.StatusBadRequest, err)
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}
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reply, err := s.RPCInvoker.Invoke(reqCodec, servletCtx, ctx)
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buf, err := reqCodec.NewResponseWithString(reply.(string), err)
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if nil != err {
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return csw.NewError(fasthttp.StatusInternalServerError, err)
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}
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ctx.SetBody(buf)
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return nil
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}
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func (s *RESTServlets) HandlePost(servletCtx server.ServletCtx, ctx *fasthttp.RequestCtx) *csw.Error {
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buf := ctx.PostBody()
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if nil == buf {
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return csw.NewError(fasthttp.StatusBadRequest, fmt.Errorf("Parameter is not valied"))
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}
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reqCodec, err := s.ServerCodec.NewRequest(buf)
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if nil != err {
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return csw.NewError(fasthttp.StatusBadRequest, err)
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}
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reply, err := s.RPCInvoker.Invoke(reqCodec, servletCtx, ctx)
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buf, err = reqCodec.NewResponseWithString(reply.(string), err)
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if nil != err {
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return csw.NewError(fasthttp.StatusInternalServerError, err)
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}
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ctx.SetBody(buf)
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return nil
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}
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