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https://github.com/fog/fog.git
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104 lines
4.3 KiB
Ruby
104 lines
4.3 KiB
Ruby
module Fog
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module AWS
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class Storage
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class Real
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# Get 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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def get_object(bucket_name, object_name, options = {}, &block)
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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'] = options['If-Modified-Since'].utc.strftime("%a, %d %b %Y %H:%M:%S +0000") if options['If-Modified-Since']
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headers['If-Unmodified-Since'] = options['If-Unmodified-Since'].utc.strftime("%a, %d %b %Y %H:%M:%S +0000") 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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:idempotent => true,
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:method => 'GET',
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:path => CGI.escape(object_name),
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:query => query
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}, &block)
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end
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end
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class Mock
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def get_object(bucket_name, object_name, options = {}, &block)
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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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response = Excon::Response.new
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if (bucket = @data[:buckets][bucket_name]) && (object = bucket[:objects][object_name])
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if options['If-Match'] && options['If-Match'] != object['ETag']
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response.status = 412
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elsif options['If-Modified-Since'] && options['If-Modified-Since'] > Time.parse(object['LastModified'])
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response.status = 304
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elsif options['If-None-Match'] && options['If-None-Match'] == object['ETag']
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response.status = 304
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elsif options['If-Unmodified-Since'] && options['If-Unmodified-Since'] < Time.parse(object['LastModified'])
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response.status = 412
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else
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response.status = 200
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response.headers = {
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'Content-Length' => object['Size'],
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'Content-Type' => object['Content-Type'],
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'ETag' => object['ETag'],
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'Last-Modified' => object['LastModified']
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}
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unless block_given?
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response.body = object[:body]
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else
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data = StringIO.new(object[:body])
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remaining = data.length
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while remaining > 0
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chunk = data.read([remaining, Excon::CHUNK_SIZE].min)
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block.call(chunk)
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remaining -= Excon::CHUNK_SIZE
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end
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end
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end
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else
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response.status = 404
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raise(Excon::Errors.status_error({:expects => 200}, response))
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end
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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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