我有一个装满了上千份文件的桶。我如何搜索水桶?


当前回答

考虑到你在AWS…我认为你会想要使用他们的CloudSearch工具。把你想要搜索的数据放到他们的服务中…让它指向S3密钥。

http://aws.amazon.com/cloudsearch/

其他回答

看一下这个文档:http://docs.aws.amazon.com/AWSSDKforPHP/latest/index.html#m=amazons3/get_object_list

您可以使用perl兼容正则表达式(PCRE)来筛选名称。

我做了如下的事情来在我的桶中寻找模式

def getListOfPrefixesFromS3(dataPath: String, prefix: String, delimiter: String, batchSize: Integer): List[String] = {
    var s3Client = new AmazonS3Client()
    var listObjectsRequest = new ListObjectsRequest().withBucketName(dataPath).withMaxKeys(batchSize).withPrefix(prefix).withDelimiter(delimiter)
    var objectListing: ObjectListing = null
    var res: List[String] = List()

    do {
      objectListing = s3Client.listObjects(listObjectsRequest)
      res = res ++ objectListing.getCommonPrefixes
      listObjectsRequest.setMarker(objectListing.getNextMarker)
    } while (objectListing.isTruncated)
    res
  }

对于较大的存储桶,这会消耗太多时间,因为所有对象摘要都由Aws返回,而不仅仅是匹配前缀和分隔符的对象。我正在寻找提高性能的方法,到目前为止,我只发现我应该命名键,并将它们正确地组织在桶中。

S3没有原生的“搜索此桶”,因为实际内容是未知的-此外,由于S3是基于键/值的,因此没有原生的方法可以一次访问多个节点,而更传统的数据存储提供了一个(SELECT * FROM…(在SQL模型中)。

您需要做的是执行ListBucket以获得bucket中对象的列表,然后遍历每个项,执行您实现的自定义操作—这就是您的搜索。

2018 - 07年现状: 亚马逊有本地sql像搜索csv和json文件!

https://aws.amazon.com/blogs/developer/introducing-support-for-amazon-s3-select-in-the-aws-sdk-for-javascript/

(至少)有两个不同的用例可以描述为“搜索桶”:

Search for something inside every object stored at the bucket; this assumes a common format for all the objects in that bucket (say, text files), etc etc. For something like this, you're forced to do what Cody Caughlan just answered. The AWS S3 docs has example code showing how to do this with the AWS SDK for Java: Listing Keys Using the AWS SDK for Java (there you'll also find PHP and C# examples). List item Search for something in the object keys contained in that bucket; S3 does have partial support for this, in the form of allowing prefix exact matches + collapsing matches after a delimiter. This is explained in more detail at the AWS S3 Developer Guide. This allows, for example, to implement "folders" through using as object keys something like folder/subfolder/file.txt If you follow this convention, most of the S3 GUIs (such as the AWS Console) will show you a folder view of your bucket.