func (protocol *HumanReadableJsonProtocol) parseStruct(fieldsList Array, request interface{}) error {
if object, ok := toJsonCheck(request); ok {
// fmt.Println("ReadStructBegin", object)
for key, value := range object {
// fmt.Println("ReadFieldBegin")
// Get the information of the field (type, name, etc)
fieldInfo := fieldsList.findInJsonArray(nameKey, key)
if fieldInfo == nil {
// Field doesn't exist
return errors.New("Unexpected key " + key)
}
// Get the Thrift Type of the field
fieldType, err := protocol.StringToTypeId(fieldInfo.getStringVal(typeIdKey))
if err != nil {
return err
}
// Add the name, type and key (1:, 2:, 3:, etc) to params
protocol.add(key, fieldType, fieldInfo.getDefaultInt16Val(keyKey, 0))
// fmt.Println(key, fieldType, fieldInfo.GetInt16Val(keyKey))
// Recursively parse the field
err = protocol.parse(fieldInfo, value, typeIdKey, typeKey)
if err != nil {
return err
}
// fmt.Println("ReadFieldEnd")
}
// Finish parsing struct
protocol.add("", thrift.TType(thrift.STOP), int16(-1))
// fmt.Println("ReadStructEnd")
return nil
} else {
return errors.New(fmt.Sprintf("Expected Json Object got %t", request))
}
}
func (protocol *HumanReadableJsonProtocol) StringToTypeId(fieldType string) (thrift.TType, error) {
switch fieldType {
case "bool":
return thrift.TType(thrift.BOOL), nil
case "i8":
return thrift.TType(thrift.BYTE), nil
case "i16":
return thrift.TType(thrift.I16), nil
case "i32":
return thrift.TType(thrift.I32), nil
case "i64":
return thrift.TType(thrift.I64), nil
case "double":
return thrift.TType(thrift.DOUBLE), nil
case "string":
return thrift.TType(thrift.STRING), nil
case "struct", "union", "exception":
return thrift.TType(thrift.STRUCT), nil
case "map":
return thrift.TType(thrift.MAP), nil
case "set":
return thrift.TType(thrift.SET), nil
case "list":
return thrift.TType(thrift.LIST), nil
}
e := fmt.Errorf("Unknown type identifier: %s", fieldType)
return thrift.TType(thrift.STOP), thrift.NewTProtocolExceptionWithType(thrift.INVALID_DATA, e)
}
func (protocol *HumanReadableJsonProtocol) ReadMessageBegin() (string, thrift.TMessageType, int32, error) {
// Read all data and parse out the JSON object
var data []byte
data, err := ioutil.ReadAll(protocol.trans)
if err != nil && err != io.EOF && err.Error() != "EOF" { // Uggh thrift wraps it inside its own error
return "", thrift.INVALID_TMESSAGE_TYPE, 0, thrift.NewTProtocolExceptionWithType(thrift.INVALID_DATA, err)
}
protocol.request, err = NewJson(data)
if err != nil {
return "", thrift.INVALID_TMESSAGE_TYPE, 0, thrift.NewTProtocolExceptionWithType(thrift.INVALID_DATA, err)
}
// Get the method info corresponding to method being called
name := protocol.request.getDefaultStringVal(methodKey, "")
methodInfo, methodInfoErr := protocol.getMethodInfo(protocol.service, name)
// Type Id tells whether it is a request (CALL) or response (REPLY) or error (EXCEPTION)
// Seq Id == 0 for CALL and 1 for REPLY, EXCEPTION always
typeId, seqId := protocol.getMessageTypeAndSeq(methodInfo)
if protocol.request.hasKey(argumentsKey) {
/** CALL */
if methodInfoErr != nil {
// Method not found, STOP processing and send back up,
// Generated code will send an error saying "Unknown function"
protocol.add("", thrift.TType(thrift.STOP), int16(-1))
return name, typeId, seqId, nil
}
// Parse out the arguments struct
// Send it the arguments struct in both the method metadata and the request
protocol.err = protocol.parseStruct(methodInfo.getArrayVal(argumentsKey), protocol.request.getJsonVal(argumentsKey))
} else if protocol.request.hasKey(resultKey) {
/** REPLY */
if methodInfoErr != nil {
// Method not found, STOP processing and send back up,
// Generated code will send an error saying "Unknown function"
protocol.add("", thrift.TType(thrift.STOP), int16(-1))
return name, typeId, seqId, nil
}
result := protocol.request.getJsonVal(resultKey)
// The result will either have "success" or the name of the error that was thrown
if result.hasKey(successKey) {
// Figure out the return type
returnType, err := protocol.StringToTypeId(methodInfo.getStringVal(returnTypeIdKey))
if err != nil {
protocol.err = err
} else {
// Add a field with the returnType
protocol.add("", returnType, int16(0))
// Parse the result
protocol.err = protocol.parse(methodInfo, result[successKey], returnTypeIdKey, returnTypeKey)
// Finish parsing
protocol.add("", thrift.TType(thrift.STOP), int16(-1))
}
} else if len(result) == 0 {
// There was nothing in result. The return type is void
protocol.add("", thrift.TType(thrift.STOP), int16(-1))
} else {
// There was an error, get the error variable name
var errName string
for key, _ := range result {
errName = key
break
}
errInfo := methodInfo.getArrayVal(exceptionsKey).findInJsonArray(nameKey, errName)
if errInfo == nil {
// Error doesn't exist in the Thrift definition
return "", thrift.INVALID_TMESSAGE_TYPE, 0, thrift.NewTProtocolExceptionWithType(thrift.INVALID_DATA, errors.New("Unable to parse result"))
}
// Begin Parsing Error (which is just a struct)
protocol.add(errName, thrift.TType(thrift.STRUCT), errInfo.getDefaultInt16Val(keyKey, 1))
// Parse Error
protocol.err = protocol.parse(errInfo, result.getJsonVal(errName), typeIdKey, typeKey)
// Finish Parsing error
protocol.add("", thrift.TType(thrift.STOP), int16(-1))
}
} else if protocol.request.hasKey(exceptionKey) {
// Error other than one defined in the method signature. It will have a string and an int32
// Add String field
protocol.add("", thrift.TType(thrift.STRING), int16(1))
// Parse string
protocol.add(protocol.request.getJsonVal(exceptionKey).getDefaultStringVal(messageKey, ""))
// Add int32
protocol.add("", thrift.TType(thrift.I32), int16(2))
// Parse int32
protocol.add(protocol.request.getJsonVal(exceptionKey).getDefaultInt32Val(typeKey, thrift.UNKNOWN_APPLICATION_EXCEPTION))
// Finish Parsing
protocol.add("", thrift.TType(thrift.STOP), int16(-1))
} else {
// Don't recognize what kind of message this is
return "", thrift.INVALID_TMESSAGE_TYPE, 0, thrift.NewTProtocolExceptionWithType(thrift.INVALID_MESSAGE_TYPE_EXCEPTION, errors.New("Invalid type"))
}
// fmt.Println(protocol.params)
return name, typeId, seqId, nil
}
