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68 lines
2.7 KiB
Ruby
68 lines
2.7 KiB
Ruby
module Fog
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module Storage
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class AWS
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class Real
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# Get headers for an object from S3
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#
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# ==== Parameters
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# * bucket_name<~String> - Name of bucket to read from
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# * object_name<~String> - Name of object to read
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# * options<~Hash>:
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# * 'If-Match'<~String> - Returns object only if its etag matches this value, otherwise returns 412 (Precondition Failed).
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# * 'If-Modified-Since'<~Time> - Returns object only if it has been modified since this time, otherwise returns 304 (Not Modified).
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# * 'If-None-Match'<~String> - Returns object only if its etag differs from this value, otherwise returns 304 (Not Modified)
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# * 'If-Unmodified-Since'<~Time> - Returns object only if it has not been modified since this time, otherwise returns 412 (Precodition Failed).
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# * 'Range'<~String> - Range of object to download
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# * 'versionId'<~String> - specify a particular version to retrieve
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#
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# ==== Returns
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# * response<~Excon::Response>:
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# * body<~String> - Contents of object
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# * headers<~Hash>:
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# * 'Content-Length'<~String> - Size of object contents
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# * 'Content-Type'<~String> - MIME type of object
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# * 'ETag'<~String> - Etag of object
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# * 'Last-Modified'<~String> - Last modified timestamp for object
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#
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# ==== See Also
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# http://docs.amazonwebservices.com/AmazonS3/latest/API/RESTObjectHEAD.html
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def head_object(bucket_name, object_name, options={})
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unless bucket_name
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raise ArgumentError.new('bucket_name is required')
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end
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unless object_name
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raise ArgumentError.new('object_name is required')
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end
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if version_id = options.delete('versionId')
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query = {'versionId' => version_id}
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end
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headers = {}
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headers['If-Modified-Since'] = Fog::Time.at(options['If-Modified-Since'].to_i).to_date_header if options['If-Modified-Since']
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headers['If-Unmodified-Since'] = Fog::Time.at(options['If-Unmodified-Since'].to_i).to_date_header if options['If-Modified-Since']
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headers.merge!(options)
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request({
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:expects => 200,
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:headers => headers,
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:host => "#{bucket_name}.#{@host}",
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:method => 'HEAD',
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:path => CGI.escape(object_name),
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:query => query
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})
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end
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end
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class Mock # :nodoc:all
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def head_object(bucket_name, object_name, options = {})
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response = get_object(bucket_name, object_name, options)
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response.body = nil
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response
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end
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end
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end
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end
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end
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