我有一个s3路径=> s3:// [存储桶名称] / [密钥]
s3://bn-complete-dev-test/1234567890/renders/Irradiance_A.png
我需要分别获取bucket_name和密钥:
var s3PathParsed = parseS3Path("s3://bn-complete-dev-test/1234567890/renders/Irradiance_A.png");
s3PathParsed.BucketName == "bn-complete-dev-test"
s3PathParsed.Key == "1234567890/renders/Irradiance_A.png"
如何使用AWS开发工具包以正确的方式解析?
1)我正在手动解析(使用正则表达式),工作正常,但我不舒服:
public class S3Path : IS3Path
{
private const string _s3PathRegex = @"[s|S]3:\/\/(?<bucket>[^\/]*)\/(?<key>.*)";
public S3Path(string s3Path)
{
Path = s3Path;
var rx = new Regex(_s3PathRegex).Match(s3Path);
if (!rx.Success || rx.Groups.Count != 3)
throw new Exception($"the S3 Path '{s3Path}' is wrong.");
BucketName = rx.Groups[1].Value;
Key = rx.Groups[2].Value;
}
public string Path { get; }
public string BucketName { get; }
public string Key { get; }
}
2)我使用了AWWSDK.S3的AmazonS3Uri:
string GetBucketNameFromS3Uri(string s3Uri)
{
return new AmazonS3Uri(s3Uri).Bucket;
}
我调用了该方法:
GetBucketNameFromS3Uri("s3://sunsite-complete-dev-test/1234567890/renders/Irradiance_A.png");
我有以下错误:
System.ArgumentException:'无效的S3 URI-主机名似乎不是有效的S3端点'
3)我也尝试
string GetBucketNameFromS3Uri(string s3Uri)
{
return new AmazonS3Uri(new Uri(s3Uri)).Bucket;
}
,具有相同的错误。
我在AWS论坛中创建了一个新线程,问题如下:https://forums.aws.amazon.com/thread.jspa?threadID=304401
答案 0 :(得分:6)
在Java中,我们可以做类似
的操作AmazonS3URI s3URI = new AmazonS3URI("s3://bucket/folder/object.csv");
S3Object s3Object = s3Client.getObject(s3URI.getBucket(), s3URI.getKey());
答案 1 :(得分:3)
如果您有对象URL(String...
),则可以使用AmazonS3Uri
:
https://bn-complete-dev-test.s3.eu-west-2.amazonaws.com/1234567890/renders/Irradiance_A.pnlet
如果您有S3 URI(// using Amazon.S3.Util
var uri = new AmazonS3Uri(urlString);
var bucketName = uri.Bucket;
var key = uri.Key;
),则涉及的内容会更多:
s3://bn-complete-dev-test/1234567890/renders/Irradiance_A.png
这是F#版本:
using System;
public static class S3
{
public static Tuple<string, string> TryParseS3Uri(string x)
{
try
{
var uri = new Uri(x);
if (uri.Scheme == "s3")
{
var bucket = uri.Host;
var key = uri.LocalPath.Substring(1);
return new Tuple<string, string>(bucket, key);
}
return null;
}
catch (Exception ex)
{
var ex2 = ex as UriFormatException;
if (ex2 == null)
{
throw ex;
}
return null;
}
}
}
答案 2 :(得分:0)
我相信此正则表达式将为您提供您想要的东西:
viewGroup.setClipChildren(false);
viewGroup.setClipToPadding(false);
bucketname是S3路径的第一部分,密钥是第一个正斜杠之后的所有内容。
答案 3 :(得分:0)
AWSSDK.S3没有路径解析器,我们需要手动解析。您可以使用以下运行良好的类:
public class S3Path
{
private const string _s3PathRegex = @"[s|S]3:\/\/(?<bucket>[^\/]+)\/(?<key>.+)";
public S3Path(string s3Path)
{
Path = s3Path;
var rx = new Regex(_s3PathRegex).Match(s3Path);
if (!rx.Success)
throw new Exception($"the S3 Path '{s3Path}' is wrong.");
BucketName = rx.Groups["bucket"].Value;
Key = rx.Groups["key"].Value;
}
public string Path { get; }
public string BucketName { get; }
public string Key { get; }
}
I created a thread in AWS Forum报告缺少的功能。
答案 4 :(得分:0)
这是regex的scala版本和用法。
val regex = "s3a://([^/]*)/(.*)".r
val regex(bucketName, key) = "s3a://my-bucket-name/myrootpath/mychildpath/file.json"
println(bucketName) // my-bucket-name
println(key) // myrootpath/mychildpath/file.json
答案 5 :(得分:0)
对于Javascript版本,您可以使用amazon-s3-uri
const AmazonS3URI = require('amazon-s3-uri')
try {
const uri = 'https://bucket.s3-aws-region.amazonaws.com/key'
const { region, bucket, key } = AmazonS3URI(uri)
} catch((err) => {
console.warn(`${uri} is not a valid S3 uri`) // should not happen because `uri` is valid in that example
})
答案 6 :(得分:0)
AWSSDK.S3 Nuget 库有一个实用方法:
if (!Amazon.S3.Util.AmazonS3Uri.TryParseAmazonS3Uri(s3Url, out AmazonS3Uri amazonS3Uri))
throw new ArgumentOutOfRangeException();
var bucket = amazonS3Uri.Bucket;
var key = amazonS3Uri.Key;
var region = amazonS3Uri.Region;