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responses.go
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responses.go
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package main
import (
"fmt"
"reflect"
"strings"
"time"
)
func (d *Descriptor) genNewResponse(sb *strings.Builder) {
fmt.Fprintf(sb,
"func (api *%s) newResponse(resp *http.Response, err error) (%s, error) {\n",
d.APIStructName(), d.ResponseTypeName())
fmt.Fprint(sb, "\tif err != nil {\n")
fmt.Fprint(sb, "\t\treturn nil, err\n")
fmt.Fprint(sb, "\t}\n")
fmt.Fprint(sb, "\tif resp.StatusCode == 401 {\n")
fmt.Fprint(sb, "\t\treturn nil, ErrUnauthorized\n")
fmt.Fprint(sb, "\t}\n")
fmt.Fprint(sb, "\tif resp.StatusCode != 200 {\n")
fmt.Fprint(sb, "\t\treturn nil, newHTTPFailure(resp.StatusCode)\n")
fmt.Fprint(sb, "\t}\n")
fmt.Fprint(sb, "\tdefer resp.Body.Close()\n")
fmt.Fprint(sb, "\treader := io.LimitReader(resp.Body, 4<<20)\n")
fmt.Fprint(sb, "\tdata, err := ioutil.ReadAll(reader)\n")
fmt.Fprint(sb, "\tif err != nil {\n")
fmt.Fprint(sb, "\t\treturn nil, err\n")
fmt.Fprint(sb, "\t}\n")
switch d.ResponseTypeKind() {
case reflect.Map:
fmt.Fprintf(sb, "\tout := %s{}\n", d.ResponseTypeName())
case reflect.Struct:
fmt.Fprintf(sb, "\tout := &%s{}\n", d.ResponseTypeNameAsStruct())
}
switch d.ResponseTypeKind() {
case reflect.Map:
fmt.Fprint(sb, "\tif err := api.jsonCodec().Decode(data, &out); err != nil {\n")
case reflect.Struct:
fmt.Fprint(sb, "\tif err := api.jsonCodec().Decode(data, out); err != nil {\n")
}
fmt.Fprint(sb, "\t\treturn nil, err\n")
fmt.Fprint(sb, "\t}\n")
switch d.ResponseTypeKind() {
case reflect.Map:
// For rationale, see https://play.golang.org/p/m9-MsTaQ5wt and
// https://play.golang.org/p/6h-v-PShMk9.
fmt.Fprint(sb, "\tif out == nil {\n")
fmt.Fprint(sb, "\t\treturn nil, ErrJSONLiteralNull\n")
fmt.Fprint(sb, "\t}\n")
case reflect.Struct:
// nothing
}
fmt.Fprintf(sb, "\treturn out, nil\n")
fmt.Fprintf(sb, "}\n\n")
}
// GenResponsesGo generates responses.go.
func GenResponsesGo(file string) {
var sb strings.Builder
fmt.Fprint(&sb, "// Code generated by go generate; DO NOT EDIT.\n")
fmt.Fprintf(&sb, "// %s\n\n", time.Now())
fmt.Fprint(&sb, "package ooapi\n\n")
fmt.Fprintf(&sb, "//go:generate go run ./internal/generator -file %s\n\n", file)
fmt.Fprint(&sb, "import (\n")
fmt.Fprint(&sb, "\t\"io\"\n")
fmt.Fprint(&sb, "\t\"io/ioutil\"\n")
fmt.Fprint(&sb, "\t\"net/http\"\n")
fmt.Fprint(&sb, "\n")
fmt.Fprint(&sb, "\t\"github.com/ooni/probe-cli/v3/internal/engine/ooapi/apimodel\"\n")
fmt.Fprint(&sb, ")\n\n")
for _, desc := range Descriptors {
desc.genNewResponse(&sb)
}
writefile(file, &sb)
}