github.com/cyverse/go-irodsclient@v0.13.2/irods/message/get_descriptor_info_request.go (about)

     1  package message
     2  
     3  import (
     4  	"encoding/base64"
     5  	"encoding/json"
     6  	"encoding/xml"
     7  
     8  	"github.com/cyverse/go-irodsclient/irods/common"
     9  	"golang.org/x/xerrors"
    10  )
    11  
    12  // IRODSMessageGetDescriptorInfoRequest stores data object descriptor info. request
    13  type IRODSMessageGetDescriptorInfoRequest struct {
    14  	FileDescriptor int `json:"fd"`
    15  }
    16  
    17  // NewIRODSMessageGetDescriptorInfoRequest creates a IRODSMessageDescriptorInfoRequest message
    18  func NewIRODSMessageGetDescriptorInfoRequest(desc int) *IRODSMessageGetDescriptorInfoRequest {
    19  	return &IRODSMessageGetDescriptorInfoRequest{
    20  		FileDescriptor: desc,
    21  	}
    22  }
    23  
    24  // GetBytes returns byte array
    25  func (msg *IRODSMessageGetDescriptorInfoRequest) GetBytes() ([]byte, error) {
    26  	jsonBody, err := json.Marshal(msg)
    27  	if err != nil {
    28  		return nil, xerrors.Errorf("failed to marshal irods message to json: %w", err)
    29  	}
    30  
    31  	jsonBodyBin := base64.StdEncoding.EncodeToString(jsonBody)
    32  
    33  	binBytesBuf := IRODSMessageBinBytesBuf{
    34  		Length: len(jsonBody), // use original data's length
    35  		Data:   jsonBodyBin,
    36  	}
    37  
    38  	xmlBytes, err := xml.Marshal(binBytesBuf)
    39  	if err != nil {
    40  		return nil, xerrors.Errorf("failed to marshal irods message to xml: %w", err)
    41  	}
    42  	return xmlBytes, nil
    43  }
    44  
    45  // FromBytes returns struct from bytes
    46  func (msg *IRODSMessageGetDescriptorInfoRequest) FromBytes(bytes []byte) error {
    47  	binBytesBuf := IRODSMessageBinBytesBuf{}
    48  	err := xml.Unmarshal(bytes, &binBytesBuf)
    49  	if err != nil {
    50  		return xerrors.Errorf("failed to marshal irods message to xml: %w", err)
    51  	}
    52  
    53  	jsonBody, err := base64.StdEncoding.DecodeString(binBytesBuf.Data)
    54  	if err != nil {
    55  		return xerrors.Errorf("failed to decode base64 data: %w", err)
    56  	}
    57  
    58  	err = json.Unmarshal(jsonBody, msg)
    59  	if err != nil {
    60  		return xerrors.Errorf("failed to unmarshal json to irods message: %w", err)
    61  	}
    62  	return nil
    63  }
    64  
    65  // GetMessage builds a message
    66  func (msg *IRODSMessageGetDescriptorInfoRequest) GetMessage() (*IRODSMessage, error) {
    67  	bytes, err := msg.GetBytes()
    68  	if err != nil {
    69  		return nil, xerrors.Errorf("failed to get bytes from irods message: %w", err)
    70  	}
    71  
    72  	msgBody := IRODSMessageBody{
    73  		Type:    RODS_MESSAGE_API_REQ_TYPE,
    74  		Message: bytes,
    75  		Error:   nil,
    76  		Bs:      nil,
    77  		IntInfo: int32(common.GET_FILE_DESCRIPTOR_INFO_APN),
    78  	}
    79  
    80  	msgHeader, err := msgBody.BuildHeader()
    81  	if err != nil {
    82  		return nil, xerrors.Errorf("failed to build header from irods message: %w", err)
    83  	}
    84  
    85  	return &IRODSMessage{
    86  		Header: msgHeader,
    87  		Body:   &msgBody,
    88  	}, nil
    89  }