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48 lines
2 KiB
Ruby
48 lines
2 KiB
Ruby
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module Fog
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module AWS
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class DynamoDB
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class Real
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# Update DynamoDB item
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#
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# ==== Parameters
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# * 'table_name'<~String> - name of table for item
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# * 'key'<~Hash>:
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# * 'HashKeyElement'<~Hash>: info for primary key
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# * 'AttributeName'<~String> - name of attribute
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# * 'AttributeType'<~String> - type of attribute
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# * 'RangeKeyElement'<~Hash>: optional, info for range key
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# * 'AttributeName'<~String> - name of attribute
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# * 'AttributeType'<~String> - type of attribute
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# * 'attribute_updates'<~Hash>:
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# * 'AttributeName'<~String> - Attribute to update
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# * 'Value'<~Hash> - formated as {type => value}
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# * 'Action'<~String> - action to take if expects matches, in %w{ADD DELETE PUT}, defaults to PUT
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# * 'options'<~Hash>:
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# * 'Expected'<~Hash>: data to check against
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# * 'AttributeName'<~String> - name of attribute
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# * 'Value'<~Hash> - a value to check for the value of
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# or
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# * 'Exists'<~Boolean> - set as false to only allow update if attribute doesn't exist
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# * 'ReturnValues'<~String> - data to return in %w{ALL_NEW ALL_OLD NONE UPDATED_NEW UPDATED_OLD}, defaults to NONE
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#
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# ==== Returns
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# * response<~Excon::Response>:
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# * body<~Hash>:
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# varies based on ReturnValues param, see: http://docs.amazonwebservices.com/amazondynamodb/latest/developerguide/API_UpdateItem.html
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def update_item(table_name, key, attribute_updates, options = {})
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body = {
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'AttributeUpdates' => attribute_updates,
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'Key' => key,
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'TableName' => table_name
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}.merge(options)
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request(
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:body => Fog::JSON.encode(body),
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:headers => {'x-amz-target' => 'DynamoDB_20111205.UpdateItem'}
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)
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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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