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get_data_object_request.go
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get_data_object_request.go
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package message
import (
"encoding/xml"
"github.com/cyverse/go-irodsclient/irods/common"
"golang.org/x/xerrors"
)
// IRODSMessageGetDataObjectRequest stores file get request
type IRODSMessageGetDataObjectRequest IRODSMessageDataObjectRequest
// NewIRODSMessageGetDataObjectRequest creates a IRODSMessageGetDataObjectRequest message
func NewIRODSMessageGetDataObjectRequest(path string, resource string, fileLength int64) *IRODSMessageGetDataObjectRequest {
request := &IRODSMessageGetDataObjectRequest{
Path: path,
CreateMode: 0,
OpenFlags: 0,
Offset: 0,
Size: fileLength,
Threads: 0,
OperationType: int(common.OPER_TYPE_GET_DATA_OBJ),
KeyVals: IRODSMessageSSKeyVal{
Length: 0,
},
}
if len(resource) > 0 {
request.KeyVals.Add(string(common.DEST_RESC_NAME_KW), resource)
}
return request
}
// GetBytes returns byte array
func (msg *IRODSMessageGetDataObjectRequest) GetBytes() ([]byte, error) {
xmlBytes, err := xml.Marshal(msg)
if err != nil {
return nil, xerrors.Errorf("failed to marshal irods message to xml: %w", err)
}
return xmlBytes, nil
}
// FromBytes returns struct from bytes
func (msg *IRODSMessageGetDataObjectRequest) FromBytes(bytes []byte) error {
err := xml.Unmarshal(bytes, msg)
if err != nil {
return xerrors.Errorf("failed to unmarshal xml to irods message: %w", err)
}
return nil
}
// GetMessage builds a message
func (msg *IRODSMessageGetDataObjectRequest) GetMessage() (*IRODSMessage, error) {
bytes, err := msg.GetBytes()
if err != nil {
return nil, xerrors.Errorf("failed to get bytes from irods message: %w", err)
}
msgBody := IRODSMessageBody{
Type: RODS_MESSAGE_API_REQ_TYPE,
Message: bytes,
Error: nil,
Bs: nil,
IntInfo: int32(common.DATA_OBJ_GET_AN),
}
msgHeader, err := msgBody.BuildHeader()
if err != nil {
return nil, xerrors.Errorf("failed to build header from irods message: %w", err)
}
return &IRODSMessage{
Header: msgHeader,
Body: &msgBody,
}, nil
}