Class: Awscli::DynamoDB::Items
- Inherits:
-
Object
- Object
- Awscli::DynamoDB::Items
- Defined in:
- lib/awscli/dynamo.rb
Instance Method Summary collapse
- #batch_get(options) ⇒ Object
- #batch_write(options) ⇒ Object
- #delete(options) ⇒ Object
- #get(options) ⇒ Object
-
#initialize(connection) ⇒ Items
constructor
A new instance of Items.
- #put(options) ⇒ Object
- #query(options) ⇒ Object
- #scan(options) ⇒ Object
- #update(options) ⇒ Object
Constructor Details
#initialize(connection) ⇒ Items
Returns a new instance of Items.
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# File 'lib/awscli/dynamo.rb', line 79 def initialize(connection) @conn = connection end |
Instance Method Details
#batch_get(options) ⇒ Object
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# File 'lib/awscli/dynamo.rb', line 252 def batch_get() request_items = {} map = [:requests].zip([:attrs_to_get]) map.each do |request_attrs_mapping| #tbl1_name*,KeySet1(hash_key_type*=hash_key_value*:range_key_type=range_key_value),KeySet2,KeySetN table_name, *keys = request_attrs_mapping.first.split(',') attrs = request_attrs_mapping.last.split(':') unless request_attrs_mapping.last.nil? request_items[table_name] = {} request_items[table_name]['Keys'] = [] keys.each do |key| parsed_key = {} hash_key, range_key = key.split(':') hash_key_type, hash_key_value = hash_key.split('=') parsed_key['HashKeyElement'] = { hash_key_type => hash_key_value } unless range_key.nil? range_key_type, range_key_value = range_key.split('=') parsed_key['RangeKeyElement'] = { range_key_type => range_key_value } end request_items[table_name]['Keys'] << parsed_key end request_items[table_name]['AttributesToGet'] = attrs unless attrs.nil? end puts @conn.batch_get_item(request_items).data[:body]['Responses'].to_yaml rescue Excon::Errors::BadRequest puts "[Error] Failed to get item from table. #{parse_excon_error_response($!)}" end |
#batch_write(options) ⇒ Object
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# File 'lib/awscli/dynamo.rb', line 279 def batch_write() request_items = {} #request_items['RequestItems'] = {} [:put_requests] and [:put_requests].each do |request| #table_name,col_name1:col_type1:col_value1,col_name2:col_type2:col_value2 .. table_name, *cols = request.split(/,(?=(?:[^']|'[^']*')*$)/) request_items[table_name] ||= [] put_request = {} put_request['PutRequest'] = {} put_request['PutRequest']['Item'] = {} cols.each do |col| col_name, col_type, col_value = col.split(':', 3) case col_type when 'N', 'S', 'B' put_request['PutRequest']['Item'][col_name] = { col_type => col_value } when 'NS', 'SS', 'BS' col_value_arry = col_value.split(';') abort 'Invalid attribute value format, attributes should be comma separated values' if col_value_arry.empty? put_request['PutRequest']['Item'][col_name] = { col_type => col_value_arry } else abort "Invalid attribute type: #{col_type}" end end request_items[table_name] << put_request end [:delete_requests] and [:delete_requests].each do |request| #table_name,KeySet1(hash_key_type*=hash_key_value*:range_key_type=range_key_value),KeySet2,KeySetN table_name, *keys = request.split(',') request_items[table_name] ||= [] delete_request = {} delete_request['DeleteRequest'] = {} delete_request['DeleteRequest']['Key'] = {} keys.each do |key_set| hash_key, range_key = key_set.split(':') hash_key_type, hash_key_value = hash_key.split('=') delete_request['DeleteRequest']['Key']['HashKeyElement'] = { hash_key_type => hash_key_value } if range_key range_key_type, range_key_value = range_key.split('=') delete_request['DeleteRequest']['Key']['RangeKeyElement'] = { range_key_type => range_key_value } end end request_items[table_name] << delete_request end @conn.batch_write_item(request_items) rescue Excon::Errors::BadRequest puts "[Error] Failed to batch put/delete item to/from table. #{parse_excon_error_response($!)}" else puts 'Batch Put/Delete Succeeded' end |
#delete(options) ⇒ Object
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# File 'lib/awscli/dynamo.rb', line 381 def delete() key = {} opts = {} #Build and validate key abort 'Invalid --hash-key format' unless [:hash_key] =~ /(N|S|NS|SS|B|BS):(.*)/ hash_key_type, hash_key_name = [:hash_key].split(':') key['HashKeyElement'] = { hash_key_type => hash_key_name } if [:range_key] abort 'Invalid --range-key format' unless [:hash_key] =~ /(N|S|NS|SS|B|BS):(.*)/ range_key_type, range_key_name = [:range_key].split(':') key['RangeKeyElement'] = { range_key_type => range_key_name } end if [:expected_attr] #-e expected_attr_name, expected_attr_type, expected_attr_value = [:expected_attr].split(':') if expected_attr_name and expected_attr_type and expected_attr_value if [:expected_exists] and [:expected_exists] == 'true' #-e Id:S:001 -x true opts['Expected'] = { expected_attr_name => { 'Value' => { expected_attr_type => expected_attr_value }, 'Exists' => [:expected_exists] } } else #-e Id:S:001 opts['Expected'] = { expected_attr_name => { 'Value' => { expected_attr_type => expected_attr_value } } } end elsif expected_attr_name and not expected_attr_type and not expected_attr_value if [:expected_exists] and [:expected_exists] == 'false' #-e Id -x false opts['Expected'] = { expected_attr_name => { 'Exists' => [:expected_exists] } } else abort 'Invalid option combination, see help for usage examples' end else abort 'Invalid option combination, see help for usage examples' end end if [:return_values] abort 'Invalid return type' unless %w(ALL_NEW ALL_OLD NONE UPDATED_NEW UPDATED_OLD).include?([:return_values]) opts['ReturnValues'] = [:return_values] end @conn.delete_item([:table_name], key, opts) rescue Excon::Errors::BadRequest puts "[Error] Failed to delete item. #{parse_excon_error_response($!)}" else puts 'Item delete succeeded.' end |
#get(options) ⇒ Object
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# File 'lib/awscli/dynamo.rb', line 218 def get() #get_item(table_name, key, options = {}) opts = {} key = {} abort 'Invalid --hash-key format' unless [:hash_key] =~ /(N|S|NS|SS|B|BS):(.*)/ hash_key_type, hash_key_name = [:hash_key].split(':') key['HashKeyElement'] = { hash_key_type => hash_key_name } if [:range_key] abort 'Invalid --range-key format' unless [:hash_key] =~ /(N|S|NS|SS|B|BS):(.*)/ range_key_type, range_key_name = [:range_key].split(':') key['RangeKeyElement'] = { range_key_type => range_key_name } end opts['AttributesToGet'] = [:attrs_to_get] if [:attrs_to_get] opts['ConsistentRead'] = true if [:consistent_read] data = @conn.get_item([:table_name], key, opts) rescue Excon::Errors::BadRequest puts "[Error] Failed to get item from table. #{parse_excon_error_response($!)}" else #TODO: Pretty print this if not data.body['Item'].nil? puts 'Retrieved Items:' puts "ColumnName \t Type \t Value" data.body['Item'].each do |attr, pair| print "#{attr} \t" pair.map {|type,value| print "#{type} \t #{value}"} puts end else puts 'No data retrieved' end end |
#put(options) ⇒ Object
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# File 'lib/awscli/dynamo.rb', line 172 def put() items = {} opts = {} [:item].each do |item| abort "invalid item format: #{item}" unless item =~ /(.*):(N|S|NS|SS|B|BS):(.*)/ attr_name, attr_type, attr_value = item.split(':', 3) case attr_type when 'N', 'S', 'B' items[attr_name] = { attr_type => attr_value } when 'NS', 'SS', 'BS' attr_value_arry = attr_value.split(';') abort 'Invalid attribute value format, attributes should be comma separated values' if attr_value_arry.empty? items[attr_name] = { attr_type => attr_value_arry } else abort 'Invalid attribute type' end end if [:expected_attr] #-a expected_attr_name, expected_attr_type, expected_attr_value = [:expected_attr].split(':') if expected_attr_name and expected_attr_type and expected_attr_value if [:expected_exists] and [:expected_exists] == 'true' #-a Id:S:001 -e true opts['Expected'] = { expected_attr_name => { 'Value' => { expected_attr_type => expected_attr_value }, 'Exists' => [:expected_exists] } } else #-a Id:S:001 opts['Expected'] = { expected_attr_name => { 'Value' => { expected_attr_type => expected_attr_value } } } end elsif expected_attr_name and not expected_attr_type and not expected_attr_value if [:expected_exists] and [:expected_exists] == 'false' #-a Id -e false opts['Expected'] = { expected_attr_name => { 'Exists' => [:expected_exists] } } else abort 'Invalid option combination, see help for usage examples' end else abort 'Invalid option combination, see help for usage examples' end end if [:return_values] abort 'Invalid return type' unless %w(ALL_NEW ALL_OLD NONE UPDATED_NEW UPDATED_OLD).include?([:return_values]) opts['ReturnValues'] = [:return_values] end @conn.put_item([:table_name], items, opts) rescue Excon::Errors::BadRequest puts "[Error] Failed to put item into table. #{parse_excon_error_response($!)}" else puts 'Item put succeeded.' end |
#query(options) ⇒ Object
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# File 'lib/awscli/dynamo.rb', line 83 def query() opts = {} hash_key_type, hash_key_value = [:hash_key_value].split(',') hash_key = { hash_key_type => hash_key_value } opts['AttributesToGet'] = [:attrs_to_get] if [:attrs_to_get] opts['Limit'] = [:limit] if [:limit] opts['Count'] = [:count] if [:count] opts['ConsistentRead'] = [:consistent_read] if [:consistent_read] if [:range_key_filter] operator, attr_type, attr_value = [:range_key_filter].split(',') opts['RangeKeyCondition'] = { 'AttributeValueList' => [{ attr_type => attr_value }], 'ComparisonOperator' => operator } end opts['ScanIndexForward'] = [:scan_index_forward] if [:start_key] opts['ExclusiveStartKey'] = {} hash_key_type, hash_key_value = [:start_key].split(',') opts['ExclusiveStartKey']['HashKeyElement'] = { hash_key_type => hash_key_value } if [:start_range_key] range_key_type, range_key_value = [:start_range_key].split(',') opts['ExclusiveStartKey']['RangeKeyElement'] = { range_key_type => range_key_value } end end p opts data = @conn.query([:table_name], hash_key, opts) rescue Excon::Errors::BadRequest puts "[Error] Failed to perform scan on table. #{parse_excon_error_response($!)}" else total_items = data.data[:body]['Count'] items = data.data[:body]['Items'] if not [:count] puts "Retrieved #{total_items} Items" Formatador.display_table(items) else puts "Items Count: #{total_items}" end puts "LastEvaluatedKey: #{data.data[:body]['LastEvaluatedKey']}" if data.data[:body]['LastEvaluatedKey'] end |
#scan(options) ⇒ Object
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# File 'lib/awscli/dynamo.rb', line 124 def scan() opts = {} opts['AttributesToGet'] = [:attrs_to_get] if [:attrs_to_get] opts['Limit'] = [:limit] if [:limit] opts['ConsistentRead'] = [:consistent_read] if [:consistent_read] opts['Count'] = [:count] if [:count] if [:scan_filter] #Operator(BETWEEN BEGINS_WITH EQ LE LT GE GT),Attr_Name,Attr_Type(N|S|B|NS|SS|BS),Attr_Value operator, attr_name, attr_type, attr_value = [:scan_filter].split(',') #case operator # when 'EQ', 'NE', 'LE', 'LT', 'GE', 'GT', 'CONTAINS', 'NOT_CONTAINS', 'BEGINS_WITH' # #can contain only one AttributeValue element # when 'BETWEEN' # #contain two AttributeValue elements # else # #IN - can contain any number of AttributeValue elements #end opts['ScanFilter'] = { attr_name => { 'AttributeValueList' => [{ attr_type => attr_value }], 'ComparisonOperator' => operator } } end if [:start_key] opts['ExclusiveStartKey'] = {} hash_key_type, hash_key_value = [:start_key].split(',') opts['ExclusiveStartKey']['HashKeyElement'] = { hash_key_type => hash_key_value } if [:start_range_key] range_key_type, range_key_value = [:start_range_key].split(',') opts['ExclusiveStartKey']['RangeKeyElement'] = { range_key_type => range_key_value } end end data = @conn.scan([:table_name], opts) rescue Excon::Errors::BadRequest puts "[Error] Failed to perform scan on table. #{parse_excon_error_response($!)}" else total_items = data.data[:body]['Count'] items = data.data[:body]['Items'] if not [:count] puts "Retrieved #{total_items} Items" Formatador.display_table(items) else puts "Items Count: #{total_items}" end puts "LastEvaluatedKey: #{data.data[:body]['LastEvaluatedKey']}" if data.data[:body]['LastEvaluatedKey'] end |
#update(options) ⇒ Object
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# File 'lib/awscli/dynamo.rb', line 329 def update() opts = {} key = {} attribute_updates = {} #Build and validate key abort 'Invalid --hash-key format' unless [:hash_key] =~ /(N|S|NS|SS|B|BS):(.*)/ hash_key_type, hash_key_name = [:hash_key].split(':') key['HashKeyElement'] = { hash_key_type => hash_key_name } if [:range_key] abort 'Invalid --range-key format' unless [:hash_key] =~ /(N|S|NS|SS|B|BS):(.*)/ range_key_type, range_key_name = [:range_key].split(':') key['RangeKeyElement'] = { range_key_type => range_key_name } end #Build and validate attribute_updates [:attr_updates].each do |attr_update| abort "invalid item format: #{attr_update}" unless attr_update =~ /(.*):(N|S|NS|SS|B|BS):(.*)/ attr_name, attr_type, attr_value = attr_update.split(':') attribute_updates[attr_name] = { 'Value' => {attr_type => attr_value}, 'Action' => [:attr_updates_action] } end #Build and validate options if any if [:expected_attr] #-a expected_attr_name, expected_attr_type, expected_attr_value = [:expected_attr].split(':') if expected_attr_name and expected_attr_type and expected_attr_value if [:expected_exists] and [:expected_exists] == 'true' #-a Id:S:001 -e true opts['Expected'] = { expected_attr_name => { 'Value' => { expected_attr_type => expected_attr_value }, 'Exists' => [:expected_exists] } } else #-a Id:S:001 opts['Expected'] = { expected_attr_name => { 'Value' => { expected_attr_type => expected_attr_value } } } end elsif expected_attr_name and not expected_attr_type and not expected_attr_value if [:expected_exists] and [:expected_exists] == 'false' #-a Id -e false opts['Expected'] = { expected_attr_name => { 'Exists' => [:expected_exists] } } else abort 'Invalid option combination, see help for usage examples' end else abort 'Invalid option combination, see help for usage examples' end end if [:return_values] abort 'Invalid return type' unless %w(ALL_NEW ALL_OLD NONE UPDATED_NEW UPDATED_OLD).include?([:return_values]) opts['ReturnValues'] = [:return_values] end @conn.update_item([:table_name], key, attribute_updates, opts) rescue Excon::Errors::BadRequest puts "[Error] Failed to update item. #{parse_excon_error_response($!)}" else puts 'Item update succeeded.' end |