github.com/minio/minio@v0.0.0-20240328213742-3f72439b8a27/internal/config/lambda/event/arn.go (about)

     1  // Copyright (c) 2015-2023 MinIO, Inc.
     2  //
     3  // This file is part of MinIO Object Storage stack
     4  //
     5  // This program is free software: you can redistribute it and/or modify
     6  // it under the terms of the GNU Affero General Public License as published by
     7  // the Free Software Foundation, either version 3 of the License, or
     8  // (at your option) any later version.
     9  //
    10  // This program is distributed in the hope that it will be useful
    11  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    12  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    13  // GNU Affero General Public License for more details.
    14  //
    15  // You should have received a copy of the GNU Affero General Public License
    16  // along with this program.  If not, see <http://www.gnu.org/licenses/>.
    17  
    18  package event
    19  
    20  import (
    21  	"strings"
    22  )
    23  
    24  // ARN - SQS resource name representation.
    25  type ARN struct {
    26  	TargetID
    27  	region string
    28  }
    29  
    30  // String - returns string representation.
    31  func (arn ARN) String() string {
    32  	if arn.TargetID.ID == "" && arn.TargetID.Name == "" && arn.region == "" {
    33  		return ""
    34  	}
    35  
    36  	return "arn:minio:s3-object-lambda:" + arn.region + ":" + arn.TargetID.String()
    37  }
    38  
    39  // ParseARN - parses string to ARN.
    40  func ParseARN(s string) (*ARN, error) {
    41  	// ARN must be in the format of arn:minio:s3-object-lambda:<REGION>:<ID>:<TYPE>
    42  	if !strings.HasPrefix(s, "arn:minio:s3-object-lambda:") {
    43  		return nil, &ErrInvalidARN{s}
    44  	}
    45  
    46  	tokens := strings.Split(s, ":")
    47  	if len(tokens) != 6 {
    48  		return nil, &ErrInvalidARN{s}
    49  	}
    50  
    51  	if tokens[4] == "" || tokens[5] == "" {
    52  		return nil, &ErrInvalidARN{s}
    53  	}
    54  
    55  	return &ARN{
    56  		region: tokens[3],
    57  		TargetID: TargetID{
    58  			ID:   tokens[4],
    59  			Name: tokens[5],
    60  		},
    61  	}, nil
    62  }